MANET网关辅助抑制开销分群路由协议研究

Research on gateway-aided overhead-restricted cluster routing protocol for MANET

针对MANET现有分群路由协议中群首负担过重,群合并时引发全网泛洪甚至连锁反应等问题,提出一种MANET网关辅助抑制开销分群路由协议GORP。在该协议中,网关在路由维护与数据传送中分担群首的部分工作,以降低群首的负担,使得群首不再成为整个网络的瓶颈;当群首移动导致群合并时,让运动群首作为第二个群的普通成员,原来静止的群首担任新群的群首,最大限度保证群的稳定性。仿真结果表明GORP协议在节点移动或节点数少和多的情况下都能获得好的性能,能满足MANET路由需求。群结构的稳定还将有利于MANET基于群的路由安全策略的实施。

As for the current cluster-based routing protocols for MANET, some problems exist such as the overloaded cluster-head, and the flooded entire network even chain reaction while two clusters are merging. To solve these problems, a Gateway-aided Overhead-restricted cluster Routing Protocol（GORP） for MANET was proposed. In GORP, gateways share part of the work of duster-heads for maintaining routing and transmitting data. In this way, the burden of duster-heads was reduced and duster-heads were no longer the bottleneck of the network. When the merging of clusters occurs, which is caused by the moving of a cluster-head to the range of another cluster-head, the moving duster-head should be set as an ordinary node, and the original still cluster-head as the cluster-head of the new cluster. Thus, the stability of duster could be kept to the most extent. Simulation results show that GORP can work well for MANET with different nodal mobility, nodal density and network scale. Cluster-based routing security in MANET can also benefit from the stable structure of duster.