一种指针推进的PMIPv6注册优化方案

An Optimized Registration of PMIPv6 Based on the Pointer Forwarding Strategy

在代理移动IPv6协议中,当移动节点发生切换,移动接入网关需代替移动节点向本地移动锚点发送注册消息以更新移动节点的位置信息.而当移动节点在空闲状态下发生切换时,大部分的注册消息对追踪移动节点没有实质作用,会造成网络资源的浪费.本文提出一种基于指针推进的代理移动IPv6优化方案,建议移动节点在空闲状态下切换时,新接入的移动接入网关只需要向前一个移动接入网关发送注册消息,以此来记录移动节点的位置信息.分析结果表明,本优化方案比代理移动IPv6的网络资源消耗更小,性能更优.

In Proxy Mobile IPv6,the Mobile Access Gateway registers the mobile node＇s location information on the Local Mobility Anchor while a handover takes place. However,the registrations won＇t play the substantial role in tracking the mobile node which is in the idle mode. Therefore,a lot of network resources will be wasted. An optimized scenario is proposed in this paper based on the pointer forwarding strategy. The scenario suggests that when the mobile node handovers in the idle mode,the newly attached Mobile Access Gateway registers to the previous attached Mobile Access Gateway instead of the remote Local Mobility Anchor. The previous Mobile Access Gateway maintains the mobile node＇s location information. The analysis result proves the optimized scenario has better performance than Proxy Mobile IPv6 with less network resources being wasted.