传统的Ad hoc网络路由协议以最少跳数作为路由选择的标准,导致部分节点过早死亡.为此,文中提出了一种新的基于能量高效的按需路由协议.该协议以AODV路由协议为基础,在路由发现阶段考虑了节点剩余能量情况,将瓶颈节点能量和路径剩余能量平均值作为路由选择度量,选择总体能量充足的路径以避开剩余能量较小的瓶颈节点的影响.仿真结果表明,该协议能够保护能量低的节点,延长其服务时间,实现网络中能量的均衡消耗,延长网络生存时间,提高分组平均投递率,具有较强的实用性.

The traditional routing protocols of Ad hoc networks use the minimum hop count as the routing metric,which brings some nodes to premature death.In order to solve this problem,this paper proposes a novel energy-efficient on-demand routing protocol based on the AODV protocol.The protocol takes into consideration the remaining energy of the nodes in the stage of routing discovery,uses the energy of the bottleneck node and the mean remaining energy of the path as the routing metrics,and chooses the path with enough collectivity energy to eliminate the influence of the bottleneck node with lower remaining energy.Simulated results demonstrate that the presented protocol is feasible because it helps to protect the nodes with low energy,prolong the service time and the network lifetime,achieve the equilibrium of energy consumption in the network,and increase the average packet delivery ratio.