多径路由协议AOMDV的改进与性能分析

移动无线自组网是一种移动多跳无线网络，有效的路由算法是关键。由于移动自组网的移动性，会使得无线自组网按需多径距离矢量路由（AOMDV）协议的活动路由不再是最短路径。针对此不足，提出了改进方法：构建两跳路由，然后利用两跳路由信息对活动路由进行动态优化，使路径更短。NS一2仿真结果表明，改进的AOMDV协议在路由发起频率、端到端平均时延、归一化路由开销和数据分组投递率等方面的性能均比AOMDV效果好。

Improvement and performance analysis of multipath AOMDV routingprotocol.

Mobile Ad hoc Network （MANET） is a mobile, multihop wireless network in which effective routing algorithm is critical. Because of the mobility ofAd hoc network, the active route ofAd hoc On-demand Multipath Distance Vector Routing（AOMDV） is no longer the shortest routing. An improved approach to the mentioned deficiencies is proposed： two-hop route is constructed and then the two-hop route information is used to optimize the active route dynamically, making the route distance more shorter. NS-2 simulation resuits indicate that the improved AOMDV can obtain lower route discovery frequency, lower end-to-end average delay, smaller normalized routing load and more packet delivery ratio than those of the AOMDV.