关键词: 移动IPv6, 层次移动IPv6, 移动锚点, 路由优化, 绑定更新流程

Abstract: In Hierarchical Mobile IPv6(HMIPv6), even though there is a shorter route between Correspondent Node(CN) and Mobile Node(MN),all the packets between them are still be forword by Mobility Anchor Point(MAP),it brings needless system's consumption and delay on packet transmission,and its binding update process of inter-region handover which conduct orderly has a certain delay on binding update.Therefore,an enhanced HMIPv6 is proposed,in which route optimized communication technology is applied when the number ratio of packet transmission to binding update reach a given threshold;Simultaneously, the binding update process of inter-domain handover is improved.A mathematical performance analysis proved that this enhanced HMIPv6 has advantages in reducing system’s consumption, delay on packet transmission and binding update in contrast to HMIPv6.

Key words: mobile IPv6, hierarchical mobile IPv6, Mobility Anchor Point (MAP), route optimization, Binding update process