关键词: 移动IP 乒乓式移动 服务质量 信令 切换

Abstract:

This paper studies the ping-pong movement of mobile nodes under the architecture of hierarchical mobile IPv6. It presents a fast seamless handover sch eme adapting to the hierarchical architecture By setting the reserved resource active flag and the offline count down timer, the scheme effectively redu ces the QoS signaling cost and handover delay, thus reduces the network transmission burden and service interruption probability. Mobile nodes are allow ed to find out a proper offline count down timer size according to its mobility characteristics to acquire better cost performance of resource reservati on alon  several neighhoring domains.

Key words: mobile IP ping-pong movement QoS signaling handover