【摘要】 MANET(移动自主网)是由一组带有无线收发装置的移动终端组成的一个多跳的临时性自治系统,网络中的节点互相通信而不依赖于预先架设的固定基础设施,在军用和紧急救援等特殊环境的应用前景非常广阔。多播是有利于成员组通信的方式,高效的多播路由是MANET网络多播路由的主要难题。文章在MAODV的基础上,提出了基于GroupH ello(GRPH)消息机制、路由发现和路由维护的MAODV多播路由协议的改进协议,仿真实验显示改进后的协议减少了开销、降低了时延,在高动态的网络中尤为明显。更多还原

【Abstract】 Mobile ad-hoc network is a multihop provisional autonomy system that is made up of a group of portable terminals with wireless transmitter,in which nodes communicate with each other without any pre-deployed infrastructure.It will be widely used in critical environment such as military or civilian emergency operations.The multicast route technology is propitious to group communication.The efficient multicast route of MANETs is a difficult point of study.In this paper based on MAODV,an MAODV improvement protocol with the Group Hello message mechanism,route discovery and route maintaining is prensented.The simulation shows that the improvement could reduce the routing overhead and delay in high movement network.更多还原