基于FMIPv6的SIP实时移动性研究

A research on SIP based on FMIPv6 for real-time mobility

随着移动IP技术的发展,出现了基于移动IP的快速切换技术FMIPv6,给出了该协议的逻辑结构图和快速切换消息流程图,指出了FMIPv6存在的不足。接着,介绍了支持实时移动性的SIP技术,并重点介绍了SIP在会话过程对实时移动性的支持。然后,引入了一种同时在网络层和应用层提供实时移动性支持的综合性解决方案-基于FMIPv6的SIP实时移动性方案,通过结合了上下文转移技术,大大减少了实时通信过程中的延时,显著提高了实时移动通信的服务质量QoS。

With the development of mobile IP （MIP）, fast handovers for mobile IPv6（FMIPv6） has emerged. This paper first gives its logical structure and flow chart of fast handoff message, with its deficiency followed. Then it introduces Session Initial Protocol （SIP） and discuss the mobility in session with details. At last, a solu- tion, which provide realtime mobility at both Network Layer and Application Layer by integrating SIP based on FMIPv6 with context transfer is introduced. The solution greatly decreased the delay in real - time communication of employing single protocol and realizes real - time mobility.