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针对传统LEACH协议的不足,提出一种改进的多跳均匀分簇路由(EMR:Equal-cluster-based Multi-hop Routing)算法。EMR算法从剩余节点中随机选择候选簇头,通过候选簇头的竞选半径和节点剩余能量来确定分布相对均匀的簇头,从而完成整个无线传感器网络的簇头确定,簇头之间采用以簇头节点剩余能量和链路传输代价的权值为依据的多跳路由协议。实验仿真结果表明,EMR算法相对LEACH协议、LEACH-E协议和MTE协议更有效地节省了节点的能耗,能显著地延长网络的存活时间。
Aiming at the deficiency of traditional LEACH protocol, an improved EMR (Equal-cluster-based Multi-hop Routing) algorithm is proposed. EMR algorithm randomly selects the candidate cluster heads from the remaining nodes, and determines the cluster heads with relatively uniform distribution through the election of the candidate cluster heads and the residual energy of the nodes, so as to complete the determination of the cluster heads of the whole wireless sensor network. The remaining energy of the head node and the weight of the link transmission cost as the multi-hop routing protocol. Experimental results show that the EMR algorithm can save node energy more effectively than LEACH protocol, LEACH-E protocol and MTE protocol, and can significantly prolong network lifetime.