三种Ad Hoc网络组播协议的性能分析与比较

近年来，Ad hoc网络的组播路由协议研究受到广泛关注，但已经提出的各种组播协议中还没有一种在MANET定义的各种性能指标方面都处于领先，因此对不同协议的分析和比较能帮助人们在不同的应用环境下选择和设计更适合的组播协议。本文首先分别介绍了3种典型的组播路由协议：ODMRP、ADMR、DRMR，然后对其控制开销进行了计算分析，最后利用NS2仿真软件对3种协议进行仿真，分析与比较了它们在各种网络环境下的性能。

Performance Analysis and Comparison of Tree Multicast Routing Protocols for Ad Hoc Network

Recently, the research of multicast routing protocol for Ad hoc networks is paid attention to abroad. However, none of those multicast routing protocols that have been proposed for Ad hoc networks keep ahead in all performance evaluation criteria of routing protocol defined by MANET. Thus, analyzing and comparing the performance of the multicast routing protocol in different application environments will help people to choose and design proper protocol. Firstly the paper introduces three multicast routing protocols for Ad hoc networks, namely ODMRP, ADMR and DRMR, and then gives the method concerning computation of control overhead. Finally, according to the simulation results with NS2, the paper analyzes and compares the performances of them in different network environments particularly.