基于信息素的无线传感器网络LEACH-M协议改进

An improved LEACH-M protocol in wireless sensor network based on pheromone

针对移动无线传感器网络LEACH-M协议随机选举簇首,导致节点能耗不均匀、网络生命周期短等问题,提出了一种选举最佳簇首的ECHS(enhanced cluster head selection for LEACH-M)路由协议,将节点剩余能量与网络平均能量比较,筛选候选簇首节点,并定义信息素来衡量各候选簇首节点担任簇首的能力,保证簇首的选举兼顾节点的能量和移动性。仿真实验结果表明,该协议与LEACH-M协议相比,可有效均衡整个网络的能量消耗,延长网络寿命。

Focusing on the random cluster head election issues in LEACH-M clustering routing protocol which leads to energy im-balance and shorten network’s life cycle ,an enhanced protocol-ECHS （Enhanced Cluster Head Selection for LEACH-M ） is pro-posed by taking the node’s residual energy and mobility factor into account .In the protocol ,the nodes remaining energy with the average energy is compared to select the candidate cluster head nodes ,and the pheromones is defined to measure the ability of each candidate cluster head nodes as a cluster head ,to ensure that the selection of cluster head takes the nodes energy and mobili-ty into consideration .Simulation results show that this improved routing protocol is better than LEACH-M protocol on the clus-ter-head nodes selection ,and it can extend the survival time of the network ,and makes the energy consumption more balanced .