层次型移动IPv6优化方案

移动且不需要改变IP地址是移动IPv6的关键所在,而移动IPv6的关键技术就在移动过程中的切换。如何降低切换延时是衡量移动IPv6切换性能的标准。为此,针对移动主机在外地网络内的频繁切换已提出层次移动IPv6,用以降低时延,针对二层网络触发的切换预期已提出移动IPv6快速切换。本文提出一种以层次型移动IPv6快速切换协议(FHMIPv6)为基础的改进方案,首先针对快速切换的链路层时延引入缓存机制,然后主要针对域间切换MAP无法减少注册时延的问题,引入功能路由概念,提出最优功能路由算法,以减少切换时延和丢包率。实验分析表明,相比层次型移动IPv6快速切换方法,该方法有很大程度的改进。

A Hierarchical Mobile IPv6 Optimization Scheme

Mobility without changing the IP address is the key to the mobile IPv6.The key technology for mobile IPv6 is the mobile switching process.How to reduce the switching delay is the standard to measure the function of the mobile IPv6 switch.For this reason,as for the mobile host’s frequent switching in the field network we propose the  Hierarchical Mobile IPv6 to reduce the delay,and expect the  switch of the second layer’s trigger has made rapid switching for mobile IPv6.In this paper,we propose an improved program based on the  fast hierarchical mobile IPv6.First of all,for the delay of fast switching,it introduces the caching mechanism,and then because MAP can not reduce the registration delay when inter domain switching happens,it introduces the concept of functional router.We propose the optimal function of the routing algorithm to reduce the handoff delay and the packet loss rate.The experimental analysis shows that the new method has a high degree of improvement.