实际无线环境下DSR协议改进策略

Strategy for Improving Performance of DSR Protocol under Real Wireless Environment

无线自组织网络(Ad Hoc Network)作为一种对等无线网络,在军事、传感器网络等众多场合有着极其重要的应用。动态源路由(DSR)协议是Ad Hoc网络最经典的协议之一,当前大多数对DSR协议的改进措施都是基于仿真环境得出,而在实际环境下往往没有起到预期的效果。在实际的无线环境下,用基于嵌入式终端组成Ad Hoc网络,首先对实际测试中的问题进行分析研究,然后提出了本地回复机制的改进措施,同时针对无线环境的多样性,对于DSR路由协议各参数依赖关系给出了一些论述,最后通过实际测试对比说明这些措施是行之有效的。

Ad Hoc network,as a peer-to-peer wireless network,plays a very important role in military and sensor networks.DSR is a classical routing protocol in Ad Hoc,on which most improvements are always based on simulation.However in real wireless environment,the expected results are usually not achieved.Thus the arm embedded platform is employed to organize Ad Hoc network under real wireless environment.First,the problems in application are analyzed,then a method for improving the local reply mechanism is proposed.Also aiming at the diversity of real wireless environment,this paper tells of the relationships between the parameters of DSR.Finally,the actual tests indicate that the modifications of DSR protocol could achieve much better results.