基于NS2的移动Ad Hoc网络路由协议的仿真与改进

Simulation and Improvement of Ad Hoc Routing Protocols Base on NS2

本文介绍移动Ad Hoc网络的发展、特征与关键技术和应用领域,对移动Ad Hoc网络的表驱动路由协议DSDV和源发性按需式路由协议DSR、AODV进行深入的分析和比较,并基于Network Simulator(NS2)平台对以上三种路由协议进行仿真分析,对路由协议的网络性能指标(数据包成功接收率、端到端平均时延和路由负荷)进行了实验分析。本文通过修改AODV相应参数,得到改进协议AODV_Improvement。在实验设定的场景中,AODV_Im-provement的数据包成功接收率、端到端平均时延和路由负荷等网络性能指标比AODV有了较大的改善,从而具有更强的适应性。

The developments, characteristics, pivotal techniques and application domain of Ad Hoc networks are reviewed in this thesis. Afterwards, the analysis and comparison of table - driven routing protocol （DSDV） and On -demand routing protocol （such as DSR, AODV） of Ad Hoc networks are studied deeply. In the end, experimental analysis of DSDV, DSR and AODV based on Network Simulator （NS2） are relevant to educed. The networking performances （ such as Packet Delivery Fraction, Average End - to - End Delay and Routing Load） of the three protocols are comparedand analyzed. In tbis thesis, An .improved protocol AODV_ Improvement is brought forth when proper parameters of AODV are modified. In the experiment simulation scene, the networking performance of AODV_ Improvement is better than AODV. Thus, the adaptability of AODV Improvement is more satisfying.