基于距离和概率的能量相关路由协议

Energy-aware Protocol Based on Distance and Probability

由于传感器节点只携带能量十分有限的电池,如何最大化网络生命周期是传感器应用必须考虑的问题。提出一个新的能量相关路由算法,即基于概率和距离的能量相关协议EPDRP,该协议在选择下一跳时综合考虑节点位置信息和剩余能量这两个方面。使用NS2对GPSR和EPDRP协议进行了实验分析,结果表明EPDRP获得了更短的路径长度和更少的路由负载,可有效延长无线传感器网络的生命周期。

As the sensor nodes have limited battery resources, how to maximize lifetime of the network is the key con- sideration. We presented a new energy-aware geographic routing algorithm based on probability and distance （EPDRP）, which considers both the local position information and remnant energy when choosing next hop. We evaluated the GPSR and EPDRP protocol using NS-2 simulator. Results show that EPDRP obtains lower average hop count than GPSR, reduces the routing protocol overhead and also effectively prolongs the network lifetime.