摘要
基于自适应移动多跳AdHoc网络,针对其DSR协议的路由缓存机制,分析不足之处,探索对现有的路由缓存机制的优化方法。提出了缓存路由有效期的概念,为网络中节点的路由表添加一个用于反馈的"缓存路由跳数"参数,节点选择此参数值最小者的路由信息。仿真实验表明,经过改进的缓存机制有效地避免了响应冲突问题,实现了路由的最短优化,在平均传输延迟、分组投递率、吞吐量性能方面都有提高。
Based on the adaptive mobile multi-hop Ad Hoc network,we analyses its inadequacies and explore a new optimized method of the existing route cache mechanism of the DSR protocol.In this article,we propose the concept of validity period of caching route,add a ＇cache routing hop＇ parameter to routing of every node in order to feedback.Nodes select routing information of the smallest one.Simulation results show that the improved caching mechanism avoid response conflict efficiently,realize the opti- mization of shortest route.Performance of the averaze delay.packet delivery ratio and routin~ overhead have been imuroved.
出处
《微型机与应用》
2013年第16期48-50,53,共4页
Microcomputer & Its Applications
基金
国家自然科学基金资助项目(60902044)
关键词
DSR
路由缓存
缓存路由有效期
跳数
NS2
DSR
routing cache
validity period of caching route
the number of hops
NS2
