TCP移动性应用层支持方案的研究

Research on application layer-based scheme to support mobility of TCP

如何在无线通信系统中提供高效的移动连接,让移动节点能够随时、随地保持业务的连续性是当前研究的热点。IETF提出的SIP协议以其灵活、容易部署等特性较好地解决了移动节点的全局移动性问题。然而,在利用SIP实现移动TCP应用过程中,频繁的切换过程将会导致TCP连接中断的发生,从而使得各种会话过程和预定业务不能正常进行。就此问题提出了一种基于SIP EYEagent与SIPINFOmethod实现TCP应用移动性的解决方案。

Providing effective support of mobility which moves nodes at anytim and keeps continuous service is a hot current research issue in the wireless comunication. The Session Initiation Protocol (SIP) introduced by IETF has flexible and easy deployment features to solve the MN's global mobility problem. However, the TCP connection will be broken off during the handoff process in the SIP environment. This paper proposes an approach based on SIPEYE and SIP INFO method to realize the mobility of TCP application.