中文摘要：

针对现有移动网络中乒乓切换问题导致的高切换延迟的情况，提出一种在FHMIPv6网络基础上的快速的切换方案。该方案提出了切换的门限阈值以及隧道状态，门限阈值决定切换发生的起点，隧道间的状态则根据需要快速激活或终止通信链路。方案优点是当移动节点在边界区域来回切换时，提供快速切换机制，减少了切换时延，合理地处理新旧AR通信隧道激活，睡眠以及终止，合理地利用带宽资源，在降低时延上保证了一定的服务质量（QoS）。通过实验仿真验证了该切换方案对减少时延的有效性。

英文摘要：

For the case that the high-latency in ping-pong Handover for mobile IPv6 network, a fast scheme in this network is proposed. This scheme proposed threshold and tunnel state when switching occurs. Threshold decide the beginning of the switc- hing, the state of the tunnel quickly activate or terminate the communication link as needed. This scheme provide fast handover and reliable service quality assurance when the mobile node switch back and forth in the border region, reduce the handoff delay. Handling activation, sleep, and termination of new and old communications tunnel reasonably, use bandwidth resources reasona- bly. The delay is roduced to ensure a certain quality of service （QoS）. Finally, the experimental simulation verifies the effective- ness of the handoff scheme to reduce the delay.