General packet radio service (GPRS) in GSM networks: Fixed-mobile network integration aspects

Abstract

In the global system for mobile communications (GSM) Phase 2+ development, one of the most attractive aspects is the support of general packet radio service (GPRS). GPRS supports data services to GSM users, sharing on a dynamic and flexible basis between packet data services and other GSM services. The paper describes the different aspects to be considered when integrating the GPRS technology in a GSM network, particularily from the PLMN (public land mobile network) operator point of view. Key concepts of GPRS are explained in terms of network architecture interfaces and protocols. Further, an overall description of different interconnection aspects that the PLMN operator has to consider, dealing with technologies and protocols typical of fixed data networks, from frame relay in the access network to IP in the backbone network is presented.