Development from 2G to 3G
The 2G Network
Initially, 2G networks were created mainly for slow transmission and voice data. Because of the quick changes in the expectations of users, these no longer meet the requirements today in terms of wireless connection. The movement and evolution from 2G to 3G technology can be divided into several phases, namely GPRS, EDGE and pure 3G.
On GPRS
The first big step in the move to 3G happened through the launching and launching of General Packet Radio Service or GPRS. The cellular services, mixed with GPRS resulted to 2.5G. GPRS was capable of giving data rates ranging from 56 kbit/s up to a maximum of 114 kbit/s. This can be used for services like WAP or Wireless Application Protocol access, MMS or Multimedia Messaging Service, SMS or Short Message Service and internet communication services like World Wide Web access and email.
The data transfer of GPRS is usually charged for each megabyte of traffic being transferred, while the data communication via the usual circuit switching is charged by the minute of connection period, regardless of whether the consumer actually used the capability or is just in idle mode.
GPRS is a top-effort packet switched service, compared to circuit switching, where there is a given QoS or Quality of Service is certified during the connection for non-mobile users. It gives medium speed data transfer, via the use of idle Time division multiple access or TDMA channels. Before, there used to be some believe to stretch GPRS to take over other standards. Instead, the networks are usually changed to use the standard of GSM, making GSM the new release. The original standard was conducted by the ETSI or European Telecommunications Standards Institute, but is now the 3GPP or 3rd Generation Partnership Project.
The EDGE
The GPRS networks have changed significantly to EDGE networks, through the presentation of 8PSK encoding. Enhanced information rates for EDGE or GSM Evolution, IMT Single Carrier or IMT-SC and Enhanced GPRS is a reverse-compatible digital mobile phone technology, allowing improved data transmission rates, as an extension over the standard GSM. EDGE can be counted as a 3G radio technology, involved in ITU's 3G description, but is usually frequently referred to as 2.75G. EDGE was launched on GSM networks, starting in 2003, by Cingular now at the start in the United States.
Standardization
3GPP standardized EDGE as it belonged in the GSM group. It is considered as an upgrade that gives a potential 3-fold boost in the capacity of GPRS and GSM networks. The specification gets bigger data rates by altering to very sophisticated processes of coding, particularly 8PSK, inside the GSM timeslots. EDGE can be applied in various packet switched applications, like the internet, other multimedia and video.
Pure 3G is the introduction of UMTS technology and networks from EDGE networks. As of the present, more work on the development of the 4G is still underway.
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