摘要
分级移动IP网络同时采用移动IP协议及其扩展协议来分别管理移动主机的宏移动和微移动。这种分级的管理方式缩短了绑定更新的时延,提高了移动主机的切换效率,但也存在明显的不足。表现在:移动主机的宏移动绑定更新需要顺次完成与移动锚点和归属代理的两次绑定更新,延迟较大,影响了数据传输效率。本文讲述的新型绑定更新方式能够同时进行上述两种绑定操作,从而缩短了绑定时延,改善了网络传输性能。对移动锚点引入"记忆性绑定更新"策略,进一步优化了绑定更新过程,消除了归属代理、移动锚点和移动主机三者之间的"三角路由"问题,改善了网络的性能。
Hierarchical mobile IPv6 network adopts the mobile IPv6 protocol and its extension to manage the macro and micro mobility of mobile hosts. This management shortens the delay of binding update, and improves the handoff efficiency of mobile hosts, but some faults still exist. For instance, the macro mobility needs to orderly accomplish two binding updates with the mobility anchor point and the home agent , resulting in a long delay, affecting the efficiency of data transmission. New binding update can finish the two bindings simultaneously, and shorten the delay, improving the capability of network transmission. The mobility anchor point with memorized functions optimizes the binding update more, and eliminates the ＂triangle router＂ among the home agent, the mobility anchor point and the mobile host, improving the efficiency of the mobile IPv6 network.
出处
《计算机工程与科学》
CSCD
2008年第2期21-23,27,共4页
Computer Engineering & Science
基金
国家自然科学基金资助项目(60403028)
陕西省自然科学基金资助项目(2006F23)
