无线传感器网络LEACH协议的研究改进

摘要

Wireless sensor network(WSN)data transmission cannot be separated from routing protocols. Routing pro-tocols are the basis of networking. Because WSN is a resource constrained network,especially the energy is blocked, routing protocols must maintain smaller routing information and minimize energy consumption. Aiming at the shortcom-ings of LEACH clustering routing protocol and considering the residual energy of nodes,the cluster head position distri-bution and the direct transmission of data between cluster head nodes and sink nodes, an improved protocol LEACH-LOMUC is proposed to improve the protocol. In the first election,the residual energy of the node and the distance from the node to the base station are considered. When the cluster is formed,the cluster head size,energy and the distance between the cluster head and the base station are considered. At the same time,the communication distance between cluster heads is too large transmission. MATALB simulation results show that LEACH-LOMUC pro-tocol effectively saves cluster head energy and prolongs network lifetime.%无线传感器网络(WSN)数据传输离不开路由协议,路由协议是其组网的基础.由于WSN是一种资源受限网络,尤其是能量的受阻,因此路由协议必须维持较小的路由信息并尽可能的减少能耗.对于LEACH算法没有考虑节点的剩余能量、簇头位置分布、簇头与汇聚节点间直接传输数据等缺点,提出了一种改进协议LEACH-LOMUC.改进协议主要思想是在候选簇头选举时考虑节点剩余能量、节点到基站距离,簇在形成时考虑了簇头规模、能量以及簇头与基站的间距.同时在簇头之间通信距离过大时引入中继节点协助数据传输.MATALB仿真结果表明,LEACH-LOMUC协议有效节约能量,延长网络生存周期.