MANET中基于能量的改进型AODV协议

针对移动Ad Hoc网络(MANET)中数据传输的稳定性问题,提出一种基于能量的改进型按需距离矢量(AODV)路由协议(AODV-E).在源节点广播的请求路由报文(RREQ)和回复报文(RREP)中增加了节点能量信息,使源节点能够掌握路径中各中间节点的能量,选择一条综合考虑路径长度和能量均衡的最优路径来传输数据,避免节点由于能量消耗过大导致链路断裂,从而影响数据传输的稳定性和时延.通过仿真实验,在不同节点数量和不同节点移动速度场景下,通过投递率(PRD)和整体时延来评估AODV-E和传统AODV协议的性能

Improved AODV Protocol Based on Energy in MANET

For the issue that the stability of data transmission in mobile Ad-Hoc network(MANET), an improved Ad-Hoc on-demand distance vector routing(AODV)routing protocol based on energy(AODV-E)is proposed. This protocol adds the node energy information into the request routing packets(RREQ)and reply messages(RREP)which broadcasted by source node, therefore the source node can get the energy information of intermediate nodes in path. Finally, the source node can select a optimal path which comprehensive consideration of path length and energy balance to transmit data. It can avoid link broken caused by excessive energy consumption of nodes, furthermore to affect the stability of data transfer and delay. The simulation experiments with different number of nodes and different speeds are built, and the delivery rate(PRD)and overall delay is use to evaluate the performance of AODV-E and traditional AODV protocol. Experimental results illustrate that the performance of AODV-E is better than AODV protocol, and effectively improves the stability of data transmission.