THE DESIGN AND EVALUATION OF SIP-BASED SEAMLESS HANDOFF MECHANISM FOR WIRELESS NETWORKS

摘要

Seamless mobility will be an important issue for uninterrupted services in ubiquitous network environments as a result of the evolution of wireless networks and the development of mobile devices. In this paper, we propose a zero packet loss handoff mechanism for real-time on-demand streaming services. The said mechanism is based on SIP cooperating with the handoff agent, and multicast and buffering techniques to overcome the impact of handoff delay in SIP-based wireless networks. The handoff mechanism is realized and evaluated by applying MP3 -music streaming on the system. The experimental and measurement results demonstrate that the proposed scheme has great performance in packet loss during the handoff period.