移动IPv6快速切换在无线局域网中的实现

基本的移动IPv6切换延迟太大，不能满足实时业务的要求．因此IETF提出了基于隧道的移动IPv6快速切换协议．对移动IPv6的切换性能进行了分析，在无线局域网环境下提出了一种实现基于隧道的移动IPv6快速切换的方法．这种方法通过结合使用链路连接触发器和快速路由器公告，实现了将无线接入点链路地址快速映射成其连接的接入路由器信息，并且使用接入路由器信息缓存机制来优化切换过程．实验结果表明，该方法实现了移动IPv6快速切换，达到了很好的切换性能．

Implementation of Fast Handovers for Mobile IPv6 in Walans

The basic mobile IPv6 handover delay is so long that it can't meet the requirement of real time services. This paper analyzed the performance of handovers for the mobile IPv6, and proposed a method to implement tunnel based fast handovers in WLANs. In the method, the wireless access point's link layer address was mapped to access router's information through the combination of using link up trigger and fast router advertisement. A mechanism called access router's information cache was also applied to optimize the handover. Experiment results proves that the method can implement fast handovers for mobile IPv6 and achieves perfect performance.