一种异构传感器网络下的节能分簇路由算法  

Energy-efficient clustering algorithm for heterogeneous sensor networks

作　　者：张兴强[1] 杨科华[1] 罗娟[1] 

机构地区：[1]湖南大学计算机与通信学院,长沙410082

出　　处：《计算机工程与应用》2011年第11期81-83,90,共4页Computer Engineering and Applications

基　　金：湖南省科技计划重点项目(No.2007GK2015);博士点基金(No.200805321056)

摘　　要：无线传感器网络存在着严重的能量约束,传统同构的传感网络路由协议和算法不适合异构网络,因此,设计异构传感网络下的节能路由算法具有现实意义。研究两种不同类型传感器节点构成的,具有不同的初始能量和不同感知数据能力的异构网络中基于簇头预测的节能分簇路由算法ECAH。根据簇内节点的剩余能量、能量消耗速率和跟上一轮簇头的距离预测出下一轮簇头,有效地减少了控制报文数量,降低了系统开销,节约了能量。仿真结果显示,在异构的网络中采用ECAH路由算法比LEACH算法网络生存时间大约提高了23%。Due to the limited energy of sensor nodes in wireless sensor networks and the traditional routing protocols in homogenous sensor networks maybe are unadapted to heterogeneous sensor networks.Therefore,designing an energy-efficient routing algorithm for heterogeneous sensor networks is very important in real-life.This paper investigates the two different sensor nodes with different energy and conscious of data in heterogeneous sensor networks,an energy-efficient clustering algorithm is proposed which based on forecast cluster head depend on current energy,energy consumption speed,and the distance with the last cluster head（ECAH） to apply to the heterogeneous sensor networks.It reduces the consumption of energy of sensor nodes and prolongs network lifetime.Simulation results show ECAH algorithm outperforms LEACH about 23% in network lifetime.

关 键 词：异构 簇头预测 分簇路由 延时 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]