What Is GPRS Internet
GPRS (General Packet Radio Service) is a packet oriented mobile data service which enhances 2G phones to enable them to send and receive data more rapidly. It works on the 2G and the 3G cellular communications. It is basically optimized for data communication services such as wireless Internet or intranet and multimedia services. With a GPRS connection, the data can be transferred immediately, and at higher speeds of typically 32 to 48 kbps. It is also known as GSM – Internet Protocol because it connects users directly to Internet Service Providers (ISP).The billing of GPRS data is per kilobytes of information transferred and received while circuit switched data connections are billed per second. An additional benefit is that data can be transferred at the same time as making a voice call. GPRS is now available on most new phones. A user can connect to the GPRS and browse the internet from a GPRS enabled mobile.
Routers and internet gateways are used for upgrading a GSM network in order to integrate GPRS. The routers and gateways are installed at the base station antennas of the network with the changes made in the software of base station controller. No changes are required to be made in the Mobile Switching Centre Architecture of the Base Stations.
There are a number of services which are offered by GPRS. These are: Internet access, Multimedia messaging i.e. MMS, Instant Messaging, PTT (Push to Talk) service, access to internet applications through the Wireless access protocols (WAP) etc… Hardware devices which supports the GPRS are divide into three classes: Class A (used to support GSM and GPRS at the same time and both services can be simultaneously used), Class B (used to support GSM and GPRS at the same time but only one service will run at a time) and Class C (either support GSM or GPRS and switch manually between each other).
The GPRS tunneling protocol defines the IP protocol of the GPRS core network. It allows the end users of a GSM network to move from one place to the other with continuing to the Internet. This process is done by carrying the subscriber’s data, which is carried out from the serving GPRS support network node, called as SGSN, to the Gateway GPRS support network node, known as GGSN.