基于AOMDV路由协议的改进方法

Improved method based on AOMDV routing protocol

针对移动自组网拓扑高动态变化和节点的繁忙程度导致数据包传输时延和丢包率增加的问题,本文提出了一种改进的AOMDV协议,基于分散路由的思想,减少了主路径切换到备份路径导致的时延抖动以及路由重传导致的丢包,同时加入延时算法,避免了主路径选到繁忙节点导致路径断裂的情况,通过设置不同的节点移动速率进行仿真,对比了AOMDV协议与改进协议的平均时延和丢包率,仿真结果表明改进的路由协议在端到端时延和丢包率指标上都优于AOMDV协议,尤其在节点移动速度超过30 m/s时,明显提高了网络传输的性能。

In view of the high dynamic topology of ad hoc network and the busy degree of nodes, which leads to the increase of packet transmission delay and packet loss rate, the paper presents a protocol which is based on the idea of dispersed routing to avoid the delay and packet loss of trigger and retransmission, and adds delay algorithm to avoid the busy node being selected as the nodes of main path.Through simulation, different node rates are set, and the average delay and packet loss rate of AOMDV protocol and the improved protocol are compared. It shows that the improved routing protocol is better than the AOMDV protocol in terms of end-to-end delay and packet loss rate. Especially when the node moves faster than 30 m/s, the performance of network transmission is significantly improved.