MANET中一种新的路由发现机制  

New route discovery mechanism in MANET

作　　者：邓宁波[1] 葛君伟[1] 陈宁[1] 

机构地区：[1]重庆邮电学院,重庆400065

出　　处：《计算机工程与设计》2005年第12期3241-3243,3273,共4页Computer Engineering and Design

基　　金：重庆市教委科学技术研究基金项目(040511)

摘　　要：为了避免无线广播风暴,DSR和AODV的洪泛路由发现机制中引入了一种方法RRD(RandomRebroadcastDelay)。然而RRD方法产生了下一跳路由竞争(Next-hopracing)现象,提出了一种基于下一跳节点的位置属性来确定延迟时间(PositionalAttributebasedNexthopDeterminationDelay)的方法来解决问题。PANDD方法将根据位置的属性例如相对距离,计算出链路生存期(linklifetime),传输能量消耗,然后一个中间节点将会计算出自己是否适合作为下一跳节点,然后决定相应的重播延迟。相比较RRD方法,采用PANDD方法,使得路由协议在路由优化,端到端传输延迟,能量消耗方面都有显著的提高。The route discovery mechanism in DSR and AODV was introduced the Random Rebroadcast Delay approach in order to avoid the problem of wireless broadcast storm. But RRD approach arose Next-hop racing phenomena. So the paper propose a new Positional Attribute based Next hop Determination Delay （PANDD） approach to address this problem. PANDD base on positional attributes such as the relative distance, estimated link lifetime, transmission power consumption, an intermediate node will identify itself as good or bad candidate for the next-hop node and use different rebroadcast delay accordingly. Compared with RRD approach, using PANDD approach, improve path outimalitv, and end-to-end delay, reduce transmission Dower consumption.

关 键 词：移动ADHOC网络 洪泛 RRD PANDD 下一跳路由竞争 链路生存期 重播延迟 传输能重消耗 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]