无线传感器网络LEACH协议的改进与仿真

An improvements and simulation to LEACH protocol of wireless sensor networks

LEACH路由协议是无线传感器网络拓扑控制中最具代表性和重要性的算法之一.针对LEACH路由协议簇头分布不均匀,节点死亡率高,易产生路由空洞等问题,提出LEACH-EED改进算法并进行仿真.首先剔除低能量节点入选簇头的权利,改进簇头选举机制,然后利用待选簇头身份标识编号增加二次簇头选举.仿真结果表明,改进的分簇算法能有效地降低节点死亡率,提高数据融合度,延长网络生存时间.

LEACH is an algorithm of the most representative and important one of wireless sensor networks in topology control. In order to solve LEACH uneven distribution of the routing protocol suite, node high mortality rates, easy to pro-duce routing holes, the paper proposes an improved algorithms and simulation. First, it deprives the right of low - energy cluster head node to be selected, improves the cluster head election mechanism, and then uses selected cluster ID num-bers to increase the secondary cluster head election. Simulation results show that the improved node clustering algorithm is effective in reducing mortality, improving the integration of the data and extending the network lifetime.