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IP SUPPORT IN 3G SYSTEMS

INTRODUCTION With the convergence of Telecommunication Networks and Computer Networks along with the development of mobile systems, we are in to witness a revolution in the near future. Looking into the future, two main drivers for the mobile telecommunications market can be identified: third-generation mobile systems (e.g., UMTS) and the Internet (e.g., the introduction of IP technologies like voice/multimedia over IP in mobile (networks). UMTS is seen as the enabler of wireless multimedia applications and portability of a personalized service set across network/terminal boundaries, as defined within the virtual home environment (VHE) system concept. In light of these recent evolutions, this project investigates the impact of the evolution toward an all-IP UMTS network architecture on the UMTS service architecture, which is based on the VHE concept. The project discusses three main scenarios for supporting IP services in the UMTS service architecture and analyzes their applicability in an all-IP-based UMTS network. The first is based on the traditional centralized VHE concept. The second is the issue of management of mobility issues in such a network. The third id the investigation into the Satellite UMTS, which will widely be used for multicasting applications and the effect of TCP and UDP on satellites. European Telecommunications Standards Institute (ETSI)-started discussions to cooperate for the production of standards for a third-generation mobile system with a core network based on evolutions of the Global System for Mobile Communications (GSM) and an access network based on all the radio access technologies (i.e., both frequency-and time-division duplex modes) supported by the different partners. This project was called the Third Generation (3G) Partnership Project (3GPP). The American National Standards Institute (ANSI) decided to establish 3GPP2, a 3G partnership project for evolved ANSI/Telecommunications Industry Association (TIA)/Electronics Industry Association (EIA)-41 networks. There is also a strategic group called International Mobile Telecomnications-2000 (IMT-2000) within the International Telecommunication Union (ITU), which focuses its work on defining interfaces between 3G networks evolved from GSM on one hand and ANSI-41 on the other, in order to enable seamless roaming between 3GPP and 3GPP2 networks. 3GPP started referring to 3G mobile systems as the Universal Mobile Telecommunication System (UMTS). In 3GPP, the UMTS specification work was divided into two phases. For the first phase of UMTS, Release 1999 or R99, standardization work was finished around the end of 1999 and the beginning of 2000. As a result, the first phase of UMTS is available in the …