Mobility management for SIP sessions in a heterogeneous network environment

摘要: The next generation of communication networks is expected to create a heterogeneous network environment encompassing an ever-increasing number different access and end-user terminals that will enable the introduction provide numerous feature-rich services. It essential end users be able roam from one another if they are enjoy seamless roaming experience, which especially important for multimedia applications such as voice, audio, video. This paper describes how make experience possible in based on Session Initiation Protocol (SIP). also several mobility management solutions compares suitability SIP sessions across General Packet Radio Service (GPRS), Universal Mobile Telecommunications System (UMTS), wireless local area (WLAN) networks. comparison implementation prototype. advantages disadvantages each solution discussed, issues encountered during