基于距离权重的LEACH协议的改进协议

Improved Protocol of LEACH Protocol Based on Distance Weight

针对LEACH协议存在的簇头随机选择,未考虑节点与基站距离不同导致节点能量消耗不均衡的问题,提出了一种基于距离权重的改进协议LEACH-D。改进协议在节点当选簇头的概率阀值中加入距离权重,使距离基站越近的节点当选簇头的概率越高。仿真表明,改进后的协议有效延长了网络生存时间,提高了能量有效性。

Aiming at the problem that the cluster head is randomly selected in the LEACH protocol, and the node energy consumption is not balanced due to the different distance between the node and the base station, an improved protocol LEACH-D based on distance weight is proposed. The improved protocol adds the distance weight to the probability threshold of cluster head selection, which makes the probability of being chosen as the cluster head is higher if the node is nearer to the base station. Simulation results show that the improved protocol effectively prolongs the network lifetime and improves the energy efficiency.