无线传感器网络LEACH算法改进及其仿真

摘要

To prolong effectivly the lifetime of the network, this paper proposes an improved low energy adaptive clustering hierarchy algorithm by introducing the node's remaining energy and centralized degree. There are mainly two differences from traditional LEACH: 1) LEACH -EC will consider the node's remaining energy at advertisement phase that has maximum of energy as the clustering head node.2) LEACH-EC will consider the node's geographic perimeter at advertisement phase that has maximum of centralized degree as the clustering head node.The simulation results show that LEACH-EC can balance the energy consumption and prolong the network lifetime more effictively than traditional LEACH.%为最大限度延长网络寿命，本文在选取簇头节点时引入节点的剩余能量和节点的集中度，对无线传感器网络LEACH算法进行改进，提出一种新的无线传感器路由算法LEACH-EC.该算法与现有LEACH算法主要有两点不同：1）根据节点的剩余能量选取簇头节点；2）选取周围区域分布密集的节点作为簇头节点。仿真实验结果表明，LEACH-EC算法能有效均衡网络节点能量消耗和延长网络生命周期。