Thursday, August 20, 2009

GPRS, General Packet Radio Services

GPRS, General Packet Radio Services, is a standard for packet switched data in GSM. The gross bit-rate is 33-270 kbps, depending on the number of time slots used. The standardization is ongoing under the management of ETSI, with the Point-to-Point service standard fixed in spring of 1998. The biggest news is that you don't establish a connection, but only use the channels when data is transmitted. It's possible to use more than one time slot to increase the users bit-rate. The great advantage with GPRS compared to circuit switched computer communication is that the data communication will be cheaper for the user, and at the same time more profitable for the network operator. Today the GSM computer communication is debited for the time the connection is established. If several users share the channel, a lower price could be given to each user, based on the amount of data transmitted. The network operator can earn more money from the packet switched channel than from a circuit switched computer communication.

The intention of the GPRS was that it should support all the possible network protocols like IP, X.25, etc. In phase one of the standardization only X.25 and IP are supported. For the support of GPRS, two new switching nodes are introduced: a "Serving Node", called SGSN, and a "Gateway Node", called GGSN. The terms SGSN and GGSN have already been explained in the lesson "GSM and GPRS". Even though the GPRS standardization procedure is not complete, Ericsson has started work on the implementation of these nodes.

No comments:

Post a Comment

Hi thank you for comment in Assignment Lanka " Book Mark on me' To future references.


Assignment Lanka Tag Cloud
Computer Networks The History of Local Area Networks, LAN, The Topologies of a Networks, LANs describe different types of transmission Medias, Local Area Networks Access Methods, Carrier Sense Multiple Access with Collision Detect, Development of LAN Technologies. LAN -Token Ring, LAN Ethernet Digital, LAN - Ethernet Sun microsystems, LAN - Ethernet Mixed Environment, LAN - Token Ring was introduced by IBM LAN - IBM implementation of Token Ring, Token Ring Novell, LAN Token Ring - in a mixed environment, LAN - Fiber Distributed Data Interface, LAN - ATM, LAN Components, LAN Switching Methods, Virtual Local Area Network, Port based VLAN, Mac based VLAN, Protocol based VLAN, User Base VLAN, PC networks Components, PC networks Shared resources, PC Network operating systems, PC networks Novell Netware, PC networks Windows NT, PC networks IBM LAN Server Computer Programming Languages HTML Language, The Generations of Programming Languages, Different types of High Level Languages, Different types of High Level Languages Disadvantages
Computer Networks - IBM LAN Server, Windows NT Networks, Novell Netware, Network operating systems, Networks Shared, Networks Components, User Base, Protocol based, Mac based, Port based, VLAN, LAN Switching, LAN Components, ATM, Fiber Data, Token Ring, Token Ring Novell, IBM implementation, Ethernet, Sun microsystems, Ethernet Digital, Token passing, LAN Technologies, CSMA/CD, Access Methods, Transmission, Networks, The History of Local Area Networks, LAN