簇首选择改进的 LEACH 无线传感器路由协议

摘要

针对 LEACH（Low Energy Adaptive Clustering Hierarchy）协议能耗大、网络生命周期短等不足，提出一种簇首选择改进的LEACH 无线传感器路由协议（M-LEACH）。首先在综合考虑节点剩余能量、网络平均剩余能量、上一轮节点消耗的能量基础上，引入加权因子选择簇首。然后根据接收信息、簇首以及传输 ADV 的能耗确定簇首的数量，使簇首在网络中分布均匀。最后采用仿真实验进行性能测试。结果表明，相对于 LEACH 协议以及其他改进的 LEACH 协议，M-LEACH 降低了传感器网络的能耗，使整个网络能量更加均衡，延长了无线传感器网络的生命周期。%Aiming at the defects of LEACH protocol in high energy consumption and short networks lifecycle,we propose a LEACH routing protocol (M-LEACH)for wireless sensor which is based on improved cluster heads selection.First,it introduces the weighting factor to select the cluster heads based on comprehensively considering the residual energy of nodes,average residual energy of networks and the energy consumed by nodes in last round;and then it determines the number of the cluster heads according to receiving the information,the cluster heads and the energy consumption of ADV transmission,enables the cluster heads evenly distributed in networks;finally the simulation experiment is carried out to test the performance.Results show that compared with LEACH protocol and other improved LEACH protocol,the M-LEACH reduces the energy consumption of sensor network,makes the whole networks more equilibrium in energy and prolongs the lifecycle of wireless sensor networks as well.