IWF verkkomuuntimen toteutus kerrokselliseen arkkitehtuuriin pohjautuvassa CDMA2000 runkoverkossa
Mikkola, Lauri Henrik · Aaltodoc (Aalto University) · 2005
CDMA2000 (Code Division Multiple Access 2000) is the North American equivalent to the European third generation mobile telecommunication network UMTS (Universal Mobile Telecommunications System). The core network evolution of CDMA2000 is moving towards layered architecture and the use of Internet Protocol (IP) for all traffic in the network. Circuit-switched data and Fax calls are legacy service that needs to be supported in the Legacy Mobile Station Domain (LMSD) of the CDMA2000 core network. The Interworking Function provides protocol conversion and interworking required to support these legacy data services, acting as a gateway between the CDMA2000 network and the Public Switched Telephone Network. This thesis concentrates on the CDMA2000 core network and the data services it provides. This thesis presents also four different proposals for realizing the interworking functionality in the layered architecture based LMSD of the CDMA2000 core network. The proposals are analysed based on defined criteria and one proposal is chosen for recommendation. This thesis presents only architectural level solutions for realizing the interworking functionality.