无线传感器网络的LEACH协议的改进与实现

Improvement and Implementation of LEACH Protocol for Wireless Sensor Networks

针对LEACH协议簇头分布不均匀和网络能量不均衡而导致网络生命周期短的问题,提出一种改进方法。该方法在簇头选举阶段,引入能量因子和位置因子来平均网络中节点的剩余能量;在数据传输阶段,引入新的数据融合机制来降低网络中的传输能耗。通过NS2仿真实验证明,与原协议相比,改进后的协议在单位时间内网络的平均能耗低于原来的50%,网络的生命周期延长114%。

Aims at the problem of LEACH protocol which exists the uneven distribution of clusterheads and imbalance in energy leading to the short network lifetime. Puts forward an improved method, introduces the energy factor and location factor to average the residual energy of each node during the selection of clusterheads. And introduces a new data fusion mechanism to reduce the energy consumption for transmission during the data transmission. Comparing with the original LEACH by NS2 simulation, it shows that the average energy consumption in u- nit time of the improved one is lower than 50%, the lifetime is extended 114%.