移动Ad Hoc网络AODV路由协议的研究与优化

无线移动自组网是仅由移动节点所组成的网络，具有分布式控制、自组织、多跳等特点，由于该网络具有抗毁性能高、易铺设等性质，越来越受到业界的广泛关注。原始的路由协议已经满足不了现有网络不可预测、频繁变化的拓扑结构的需要，因此，在之前研究的基础上，对现有Ad Hoc网络AODV路由协议进行了研究，并设计出一种基于AODV协议的改进路由协议——基于认知的AODV协议(Cognitive-based AODV,CAODV)。通过NS2进行试验仿真，结果表明，CAODV协议具有比AODV协议更加优良的性质，可以有效降低重启路由发现频率，增加断裂链路的修复成功率，降低协议的控制负载，对现有网络的动态变化具有很强的适应能力。

Research and optimization of AODV routing protocols in mobile Ad Hoc network

Wireless mobile Ad Hoc network composed by a group of mobile nodes is an emerging network with features of distributed control ,self-organizing and multi-hop. Because of its excellent properties such as high survivability and easy laying,wireless mobile Ad Hoc network gets a lot of attention from researchers in recent years. The original routing protocols cannot meet the requirements of unpredictable existing networks and frequent change of topological,so on basis of previous study,a lot of new AODV routing protocol researches on Ad Hoc network are conducted and this paper gives a proposal of an improved AODV routing protocol based on the adaptive scheme which is called CAODV(cognitive-based AODV). NS2 experimental simulation shows that the CAODV has more excellent properties than AODV,such as less reboot frequency of routing and less controlled load of protocols and higher success rate of repair of broken links,which prove the better adaptive property of CAODV for the dynamically changing wireless Ad Hoc network.