基于DSR协议的缓存路由选择与分组抢修算法  

A cached routes preferential selecting algorithm and a novel packet salvage technique for DSR protocol

作　　者：叶飞[1] 刘玉梅[1] 马伟华[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2008年第4期61-64,共4页Applied Science and Technology

摘　　要：提出了一种在缓存路径信息时增加优先级属性值的方法,对一次路由发现过程中得到的多条路由的可靠性进行区分,并把这种方法扩展到整个DSR协议的路由存储机制中,使节点可以在发送数据分组和对路由请求进行回复时按照优先级选择最可靠的路由,从而提高了包传输率,减小了端到端时延.并在分组抢修过程中使用了一种新的分组抢修方法,提高了分组抢修的成功率.A method is proposed to distinguish the reliability of several routes obtained in a route discovery process through adding a priority attribute to the path information structure. This method can be extended to the entire DSR route caching mechanism, in which the nodes will search the most reliable route according to the priority attribute when they send data packets or reply route request. Hence the transmitting rate of packets is improved and the end-to-end time-delaying is reduced. Also, a new packet salvage method is proposed, which greatly improves the performance of packet salvage.

关 键 词：DSR 优先级 路径信息 跳数 分组抢修 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]