中文摘要：

针对移动WiMAX网络中,基于FMIPv6和DAD（duplicate address detection）机制的快速切换存在着开销大和检测时延长的问题,提出了一种跨层快速切换的策略。新策略在FMIPv6基础上,使用了mSCTP协议和ODAD（optimistic DAD）机制,成功地消除了FMIPv6协议中建立隧道的开销和减少了DAD地址检测的时延。仿真结果显示,新的切换策略将切换时延和分组丢失分别降低了65%和60%。

英文摘要：

To improve heavy overhead and long detection latency while implanting FMIPv6 and DAD mechanism for fast handover in mobile WiMAX networks,this paper proposed a cross-layer fast handover scheme.In proposed scheme,used FMIPv6 and mSCTP,and considered ODAD mechanism also.It not only eliminated the overhead of establishing tunnel,but also reduced the overhead of address detection.Evaluating performance of proposed scheme with NS2,simulation results show the packet loss and the handover latency are significantly improved,up to 65% and 60% respectively.