Introduction
Access to information is among the most important aspects of contemporary life. The
popularity of portable devices capable of Internet connection has created a strong demand for
network systems that provide fast and reliable data transfer. The following paper is a literature
review on the evolution of network systems from 1G to 4G, focusing on key aspects of each
generation.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
Generation Definition
A generation of network systems refers to a fundamental change in the technology behind the
concept that provides enhancements in performance, reliability, and scalability. Each
generation is incompatible with its predecessors. For this reason, subsequent upgrades of
existing technology are usually clustered under a single generation as its versions. It should
also be understood that this loose definition was introduced relatively late in the course of
evolution and has been applied retrospectively to the first generations.
1G
The first generation of network systems was developed in Japan in the late seventies and
deployed in several European countries several years later. The main goal of the solution was
to ensure the possibility to maintain the connection as the user moved from one location to the
other. This was achieved by transferring calls from one entry point (referred to as a cell) to the
other. The technology became commercially available in 1983, with the deployment of the
Advanced Mobile Phone System (AMPS) in the U.S., Israel, and Australia (Agrawal and Zeng
208). The system contained several major limitations.
First, the analog signal required a broad transmission spectrum in order to operate efficiently.
Consequently, it required a large frequency gap between users to decrease interference. Second,
it supported one user per channel, severely limiting its usage. Third, it was prohibitively
expensive and energy-consuming. Finally, it contained several security flaws – specifically, the
data was not encrypted and could be intercepted relatively easily. Despite these issues, 1G has
introduced several important aspects of network systems. For instance, it relied on base stations
for providing coverage, with different frequencies used by neighboring cells to avoid
interference, and used automated means of coordination to ensure a seamless connection.
2G
The second generation was introduced in the early nineties through two competing
technologies, GSM and CDMA. Two main aspects signified the fundamental change required
for the system to qualify as 2G. First, the analog AMPS system was superseded by its digital
counterpart, D-AMPS. Second, the addition of an out-of-band channel ensured faster phone-
to-network signaling (Penttinen 277).
The switch to a digital format provided several crucial advantages for the technology. First, it
allowed using digital encryption, which significantly improved the safety and security of the
data. Second, it optimized the use of the frequency spectrum, ensuring greater penetration
levels. Third, it broadened the scope of data transferring by introducing text messaging through
short messaging service (SMS). The latter was especially important since it can be argued that
the diversity of data has remained the defining feature of mobile networking in the modern
setting.
Unlike its predecessor, 2G saw several major upgrades. The first one, commonly referred to as
2.5G, was General Packet Radio Service (GPRS). The technology was based on GSM service,
with the respective upgrade of CDMA200 networks in Europe. The main difference of GPRS
was the enhancement of the circuit-switched domain with a packet-switched one. This shift
allowed charging users based on the volume of transferred data instead of time allocated for
network usage. In addition to greater affordability, it allowed for a more efficient network usage
by removing the restrictions on channel usage and permitting multiple users to transfer data via
the same channel (Penttinen 372).
The second improvement, known as 2.75G, was the Enhanced Data rates for GSM Evolution
(EDGE). The technology relied on advanced encryption and transmission mechanisms, known
as 8PSK encoding, which permitted a threefold increase in the volume of data per symbol
(Abdullah and Al-Hindawi 2). Importantly, EDGE was a backward-compatible technology,
which allowed for a seamless implementation in GSM networks and, in some instances, D-
AMPS generation. Due to its technological superiority, EDGE was eventually adopted for 3G
standards. Overall, the switch to 2G contributed to its commercial availability and thus ensured
mainstream adoption.
3G
The rising popularity of portable devices capable of network connectivity created strong
demand for faster data transfer rates and greater scalability. Thus, a new generation of networks
was developed. The packet switching principle was adopted from 2.5G in order to maintain the
high transfer capacity of the carrier wave. Two main competitors were responsible for the
establishment of a 3G standard. The first was Evolution-Data Optimized (EV-DO), which
decreased connection establishment time, enabled several devices to share a slot, and increased
the maximum burst rate to 3.1 Mbit/s (Attar et al. 49).
The second was WCDMA, which relied on a GSM network and used a 5Mz carrier. The latter
enjoyed greater adoption due to its capacity for high-speed, reliable network connection.
Eventually, a number of improvements were developed and deployed under the umbrella term
High-Speed Packet Access (HSPA). The upgraded version of the network system (sometimes
referred to as 3.5G) uses the W-CDMA frequencies of 2100, 1900, 850, and 900 MHz, is
backward-compatible with earlier 3G versions and offers significantly increased data transfer
speed (14.4 Mbit/s in the uplink and 5.76 Mbit/s in the uplink) (Penttinen 884).
The next upgrade of HSPA, known as HSPA+ or 3.75G, increased the rate to 42.2 Mbit/s and
22 Mbit/s., respectively, with up to 168 Mbit/s possible in theory. The technologies responsible
for the improvement include beamforming and multiple-input, multiple-output
communications (MIMO). The former provides a stronger signal by focusing the beam in the
direction of a user, whereas the latter uses several antennas for greater stability. The HSPA
upgrades ensured compliance with consumer expectations and lowered hardware requirements,
allowing for greater reliability and lower power consumption.
4G
The growing popularity of data-demanding services such as video and audio streaming,
coupled with the growing popularity of smartphones, eventually rendered 3G insufficient for
widespread use. In response, several technologies were proposed that offered up to a 10-fold
increase in data transfer rate over 3G. Currently, 4G is in the early stage of implementation,
with several competitors available in different regions.
The first candidate is WiMAX, an IEEE-based standard initially capable of 40 Mbit/s data rate,
with the eventual improvement of up to 1 Gbit/s (Penttinen 897). WiMAX is also notable for
its flexibility, being used either as a replacement or an enhancement of the networks of existing
generations. This aspect of technology greatly enhances its suitability for developing countries.
The second candidate is Long-Term Evolution (LTE), a standard based on GSM technology
and incorporating many of its features, including HSPA.
Importantly, LTE was initially considered incompatible with the definition of 4G due to the use
of legacy technologies but was eventually recognized as such for marketing reasons. Both
technologies are still in the active stage of development and have not been deployed
consistently on a global scale.
Conclusion
As can be seen, each of the generations has contributed to the evolution of the current state of
mobile network technology. The current approach adopted by the researchers prioritizes
increased capacity, reliability, and scalability, with additional focus on efficiency and
accessibility. Considering the progress demonstrated by the pioneering projects in the field, it
is possible to expect further improvements in the technological aspect of the systems and, by
extension, a more even implementation on a global scale.
