基于NS2的Ad-hoc网络路由协议比较与性能评价

Ad-hoc routing comparation and perforrnance evaluation based on NS2

无线Ad-hoc网络的应用越来越广泛.由于其节点的移动性,使得现有的路由协议不能满足需求,为此,有许多的研究着力于无线路由方面,提出了多个无线Ad-hoc路由协议.本文介绍和分析了当前Ad hoc网络中的主要路由算法.使用网络仿真软件NS2评价移动自组网的路由协议DSR、AODV、DSDV,编写了用于仿真实现的脚本程序,对仿真结果进行比较和性能评价.本文的仿真是在5个和30个无线节点的网络拓扑结构中进行,对整个传输过程产生的仿真Trace文档处理、分析,得到DSR、AODV、DSDV路由协议的性能比较,由此得出不同协议的适用范围和协议特性.

Ad-hoc wireless network application is increasingly widely used abroad. The node at mobile environment moves frequenty, so the routing protocol in existence network cant satisfy user＇s demand,wherefore,many research community begin to pay attention wireless routing protocol and algorithm, as well as bring forward multi-wireless Ad-hoc routing solution. This article introduces and analyses major routing protocol algorithms in Ad-hoc network,and uses the network simulation software NS2 to evaluate Ad-hoc routing protocol ,such as DSR, AODV and DSDV protocol. Through writting some script program to actualize simulation,and compaing and evaluating protocol performance, the textual simulation proceed in the network topology with three and thirty wireless nodes are carried out. Through the disposal and analysis of the trace document generatea in wholly simulation process, the performance comparison with DSR,DSDV,AODV routing protocol,is obtained so that we can find out different protocol＇s applicabilityies and protocol characteristics.