无线传感器网络能量有效成簇算法研究_尚凤军.pdfVIP

2009 5 5 Journal of Chinese Com puter System s Vol1 30 No. 5 2009 尚凤军, 雷 阳 (, 4000 5) E-m ail: shangfj@ cqupt. edu. cn : 分析当网络覆盖范围变大时LEACH 协议存在的问题, 针对传感网络中簇头采用单跳通 时距离基站较远的簇头能量 消耗太大而过早死亡, 采用多跳通 时距离基站较近的节点过多参与数据会转发而过快死亡, 提出一种综合考虑节点位置节 点能量状况的多跳改进算法 LEACH-L, 同时, LEACH-L 还通过限制簇头的最短转发距离, 避免网络过多的进行数据转发使网 络开销增大. 仿真结果显示, 当网络范围变大时, LEACH-L能有效的减少网络中节点和基站通 时的能量消耗, 均衡传感网络 节点负载, 较大幅度的延长传感器网络的生命周期. : ; LEACH; ; : TP39314 : A : 1000-1220( 2009) 05-0839-04 Energy E fficient ClusteringA lgorithm forW ireless Sensor Networks SHANG Feng-jun, LEI Yang (College o f Com puter Science and Techno logy, Chongqing University of Po sts and Telecommunica tions,Chongqing 4000 5, China ) Abstract: This paper analyses the problem in LEACH w hen the netw ork is in a large scope, considering on the clustersw h ich is far w ith the B S deed earlier for the big d ispatch of energy in once comm un ication in one hop routing and the clustersw h ich is closer the BS deed earlier for transferring m ore date packets in m ultip le hop routing. A new Routing Protoco ls nam ed LEACH-L is proposed, EACH-L restrict am inmi um distance form u ltiple hop routing w hich can avo id increase the energy d ispatch in am ultip le hop comm u- n ication. The result of expermi en t show s that LEACH-L can balance the energy d ispatch of the sensors in different area and m ake a longer life span of sen sor netw ork w hen the scope of netw ork goes in to larger. K ey words:w ireless sensor netw ork; routing; LEACH; m u ltiple-hop 1 . [ ] , , , , , . . , , 2 . [ 1] LEACH , , , TDM A , , . , , ,