无线传感器网络的LEACH算法改进与仿真研究  

Provement and Simulation Research of Wireless Sensor Network LEACH Protocol

作　　者：顾明霞[1] 

机构地区：[1]江苏盐城师范学院信息科学与技术学院,江苏盐城224002

出　　处：《计算机仿真》2010年第9期139-141,185,共4页Computer Simulation

摘　　要：在无线传感器路由算法的研究中,由于无线传感器能量受限,针对LEACH路由算法中簇头选择不合理以及节点能耗不均衡等不足,为了提高能量的有效性,提出了一种改进的LEACH路由算法(E_LEACH)。首先在簇首选择的过程中,充分考虑节点的能量状态,尽可能使剩余能量高的节点当选为簇首;然后在数据传输阶段采用单跳和多跳混合通信方式均衡簇头与基站能量消耗,提高网络能量的利用率,延长网络生存时间。采用OPNET对E_LEACH及LEACH算法进行了仿真实验,结果表明,对比LEACH算法,E_LEACH算法更能均衡节点的能耗,有效地延长了整个网络的生存周期。Wireless Sensor network contains a large number of nodes,whose battery power is very limited,so high-efficient and low-power routing algorithm is the pivotal problem. Because of the problem,in LEACH,the nodes consume their power quickly and the energy efficiency decreases. By the method of changing the competing factor,the improved protocol,BCHSA（balanced cluster head selection algorithm）,balances the consuming of network＇s energy and prolongs the network＇s lifetime.The simulation results indicate that compared with LEACH,the improved LEACH lifetime is longer and the energy efficiency is enhanced.

关 键 词：无线传感器网络 簇头选择 能量有效性 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]