基于动态家乡代理的NEMO路由优化  

Route optimization based on dynamic home agent in NEMO

作　　者：石东海[1] 唐朝京[1] 张尔扬[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《浙江大学学报（工学版）》2008年第2期344-348,共5页Journal of Zhejiang University：Engineering Science

基　　金：国防预研资助项目(41329080101);国家自然科学基金资助项目(60372039)

摘　　要：为了实现网络移动性(NEMO)中的路由优化,在MIP/AAA框架的基础上设计了一个动态家乡代理路由优化方案.当移动式网络进入外地网络时,申请一个动态家乡代理为每个移动式网络节点分配一个新的动态家乡地址,并将该地址作为移动式网络节点对外连接的源地址.通过建立移动路由器与动态家乡代理之间的注册协议,实现了移动式网络的基本数据传输模型.对动态家乡代理方案与基于家乡代理注册的返回路由可达(RR)方案中的网络控制消息和数据传输消息进行了比较分析与仿真,并提出了判决函数用于选择动态家乡代理方案.仿真结果表明,提出的动态家乡代理方案较基于家乡代理的RR方案在网络损耗和注册延迟等网络性能方面有很大的改善.A route optimization scheme based on dynamic home agent and the model of mobile IP with authentication, authorization and accounting （MIP/AAA） was presented to realize the route optimization in network mobility （NEMO）. In this scheme, when a mobile network moves into a foreign network, it may apply a dynamic home agent to assign a new dynamic home address for every mobile network＇s node, and these addresses are used as the source addresses in mobile network nodes＇ outbound connection. A data transmission basic model was realized through designing the registration protocol between the mobile router and the dynamic home agent. Comparison and simulation on the network control messages and data transmission messages between the presented scheme and the return routability （RR） scheme based on home agent registration were presented, and a judgment function was also presented for selecting the dynamic home agent. The simulation indicates that the presented scheme can improve the network performance in network cost and registration delay compared with the RR scheme.

关 键 词：网络移动性(NEMO) 路由优化 RR机制 动态家乡代理 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]