基于指针策略的PMIPv6优化方案研究

Research on the Optimization Scheme of PMIPv6 based on Pointer Strategy

代理移动IPv6引入指针推进机制,解决了移动节点切换过程频繁向本地移动锚点注册的问题。但相邻移动接入网关之间距离较远时,切换性能没有明显改善。提出一种基于指针策略的PMIPv6优化方案,建立指针链的同时,优先向距离较近的本地移动锚点注册,优化绑定更新的过程。性能分析结果表明,无论何时,优化方案的绑定更新开销总是小于现有方案,证明了该优化方案在减少网络开销方面的优越性。

Proxy mobile IPv6 has introduced the pointer forwarding mechanism,which reduced the registration with local mobile an⁃chor during the frequent handover.However,the handoff performance was not improved when the distance of mobile access gate⁃ways was farther away.A PMIPv6 optimization scheme based on pointer strategy was proposed.The optimization scheme not only established the pointer chain,but also registered with the nearer local mobile anchor,optimizing the binding update process.The results of performance analysis show that the cost of the optimization scheme is always smaller than that of the existing scheme at any time,which proves the superiority of the optimization scheme in reducing the network overhead.