针对AODV协议只选择具有最少跳数路由，而不考虑节点能量即将耗尽或节点即将离开邻节点传送范围，造成路由频繁中断的问题，提出新的改进方案，在路由发现阶段，选择能量较高和信号强度较强的节点作为路由节点，在路由维护阶段，对能量即将耗尽或即将离开邻节点有效传送范围的节点进行路由备份。仿真实验结果表明改进后的协议能够有效增加数据包投递率和减少平均端到端延时，并能有效减缓能耗速度，提高整个网络的生存期。%AODV routing protocol only selects the route with least number of hops, without considering the node energy depletion or being about to leave the transmission range of it’s neighbor node, it often results in routing fracture frequently. In order to solve this problem, a new scheme is improved. In the route discovery phase, the node which has greater energy and greater signal strength is selected. In the routing maintenance phase, routing backup is done when the node energy being about to run out or leaving the effective transmission range. Simulation results show that the improved routing protocol can increase the packet delivery ratio, reduce the average end to end delay and energy consumption rate, enhance survival time of the entire network.
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