基于身份与位置分离的嵌套移动网络路由优化机制  

Route Optimization Mechanism Based on Identifier/Locator Split for Nested Mobile Network

作　　者：杨水根[1] 秦雅娟[1] 周华春[1] 张宏科[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《电子学报》2008年第7期1261-1267,共7页Acta Electronica Sinica

基　　金：国家973重点基础研究发展规划(No.2007CB307101;2007CB307106);教育部高等学校科技创新工程重大项目培育资金(No.706005)

摘　　要：基于移动IPv6嵌套移动网络中存在的路由优化问题,本质上是由传统互联网的体系结构造成的.在传统互联网体系结构中,IP地址同时代表了节点的身份标识和位置标识,这种双重功能不利于节点的移动.针对这一问题,本文提出一种身份与位置分离的体系结构,IP地址只作为节点的位置标识,引入端点标识符作为通信双方的身份标识,使得当节点的地址改变时通信双方的连接不中断.在该身份与位置分离体系结构基础上,提出一种嵌套移动网络的路由优化机制,利用封装在IPv6逐跳选项报头中的路由更新选项、路由确认选项和路由删除选项进行路由优化.性能分析结果表明,该机制具有较低的报文开销和路由更新时延.The routing optimization problem existed in nested mobile network based on Mobile IPv6 is introduced by the traditional Internet architecture in essence, where the IP address functions as locator as well as identifier.In this paper, a new Intemet architecture based on identifier/locator split is proposed. In this new architecture, the IP address functions only as locator while endpoint identifier is introduced to function as transport identifier. In addition, a route optimization mechanism for nested mobile network based on the identifier/locator split architecture is proposed. The mechanism introduces route update option, route acknowledgement option, and route delete option, which are encapsulated in IPv6 hop-by-hop extended header, to perform the route optimization. The analytical results show that the new mechanism has lower packet overhead and routing update delay than traditional mechanism.

关 键 词：嵌套移动网络 路由优化 身份与位置分离 IPv6逐跳选项报头 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]