一种基于树均匀分簇的WSNs节能路由协议

摘要

针对无线传感器网络(WSNs)典型分簇LEACH算法簇首分布不均和簇首与基站一跳通信能耗大的问题,提出一种基于树均匀分簇的节能路由协议(EUCR).基于节点接收信号强度与自身剩余能量的乘积及网络连通度选取簇首,计算簇首间的合理距离,使网络均匀分簇;基于跳数与簇首当前剩余能量构造簇间优化路由树.在OMNeT++中对EUCR进行仿真对比分析.仿真结果表明:与LEACH相比,EUCR协议簇首分布更均匀,提高了簇的负载平衡程度,节省了节点能量,延长了网络生命周期.%LEACH, as a traditional routing protocol in wireless sensor networks, has some disadvantages,including uneven distribution of cluster heads and great energy consumption to communicate with base station in one hop.According to these disadvantages,an energy-efficient uniform tree-clustering routing(EUCR) protocol is proposed.In EUCR,a cluster head is selected, based on the product of received signal strength by node and its remained energy and network connectivity. Calculation of suitable distance between cluster heads made even cluster distribution in network. Optimizing routing tree of cluster heads is established based on hop numbers and its remained energy. EUCR is simulated in OMNeT + +. The results show that compared with LEACH,EUCR makes cluster distribution moro even, enhances the degree of load balancing, saves energy and prolongs the lifetime of network.