Abstract: To solve the problems of handover delay and packet loss rate existed in FMIPv6 and F-HMIPv6，an improved FMIPv6 handover scheme introducing information learning and proxy binding is designed.The scheme completes the configuration of the NCoA，DAD and the establishment of the tunnels in advance，manages the tunnel between the access routers using tunnel timer and introduces the proxy mechanism to perform the binding before the L2 handover.The NS-2 simulation results show that the improved scheme is better than FMIPv6 and F-HMIPv6 in terms of handover delay and packet loss rate.

Key words: information learning, tunnel timer, binding proxy, handover delay, packet lost rate

摘要： 针对FMIPv6和F-HMIPv6存在的切换延迟长和丢包率高的问题，提出了一种引入信息学习和绑定代理的FMIPv6改进方案。该方案通过引入信息学习机制，将新转交地址配置、重复地址检测DAD和隧道建立等工作提前完成;并使用隧道定时器，按需设定路由器之间的隧道生存时间;结合代理机制，使得绑定注册过程在二层切换前由路由器代理执行。NS-2仿真结果表明，改进方案在切换延迟和丢包率方面的性能优于FMIPv6和F-HMIPv6。

关键词: 信息学习, 隧道定时器, 绑定代理, 切换延迟, 丢包率