基于树的Ad hoc组播路由协议的研究与改进  

Research and Improvement of Tree-besed Ad Hoc Multicast Routing Protocol

作　　者：崔雪菲[1] 张力军[1] 祝铭[1] 

机构地区：[1]北京航空航天大学计算机学院611实验室,北京100191

出　　处：《计算机与数字工程》2009年第1期140-143,184,共5页Computer & Digital Engineering

基　　金：国防科工委研究生创新实践基金项目资助

摘　　要：移动Ad hoc网络以其组网灵活、快捷、不需要预设网络基础设施以及完全分布式等特点,在军用和紧急救援等特殊环境的应用前景非常广阔。在移动Ad hoc网络领域,由于节点的带宽和能源非常有限,组播数据传送的重要性日益突出,组播路由技术的研究逐渐成为Ad hoc网络的核心研究方向。在基于树的组播路由协议MAODV的基础之上,提出一种简化组播树合并,扩展组播结构路由维护过程的改进方案,仿真实验结果表明改进后的协议提高了分组投递率、降低了时延,是一种比MAODV协议适应性更强的可行性方案。Because of the network flexibility, efficiency, without the network infrastructure and fully distributed, Ad hoc network has very broad application prospects in military and emergency relief in special circumstances. In the research of Mobile Ad hoc network, as the bandwidth and energy are very limited. The importance of multicast data transmission has increasingly become prominent, and the research of multicast routing technology of Ad hoc network has gradually become the core research direction. In this paper, based on the tree-based multicast routing protocol MAODV, a new solution for multicasting is presented. It simplify the merger of the multicast trees and improve multicast routing mainte- nance process. Simulation results show that the new protocol raise the package deliver ratio and reduce the time delay, which is a feasibility scheme with better adaptability than MAODV.

关 键 词：Ad HOC网络 组播路由 NS2 MAODV 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]