无线传感器网络LEACH路由协议的节能改进  

An improvement of energy-savingalgorithm based on LEACH routing protocol in wireless sensor network

作　　者：张飞鸽[1] 

机构地区：[1]宝鸡文理学院电子电气工程学院,陕西宝鸡721016

出　　处：《宝鸡文理学院学报（自然科学版）》2015年第2期49-52,共4页Journal of Baoji University of Arts and Sciences(Natural Science Edition)

摘　　要：目的 LEACH是一种经典的WSN自适应分簇分层路由协议,但协议没有考虑节点的剩余能量,随机的产生群首节点,且在分簇过程中没有考虑群首节点的数量,过多的群首造成数据冗余,过少的群首又因数据传输距离过长而消耗较多的能量,缩短了整个网络的生存周期。通过解决LEACH存在的以上缺陷,延长网络生命周期。方法首先在阀值公式中引入节点的能量因素,然后提出一种新的最佳群首数的计算方法。结果通过控制群首数量能够确保网络负载的平衡。结论仿真结果表明:改进后的算法有效降低了能耗,延长了节点和网络的寿命。Objeetive-To extend the network life cycle by solving such defects existing in the LEACH as failing to take in account node＇s residual energy and the number of cluster head nodes in the clustering process, data redundancy caused by excessive cluster heads and the additional energy consumed by too few nodes as a result of the long distance of data transmission, which c：onsequently reduced the lifetime of the whole network, although LEACH is a classical routing protocol for WSN that takes the adaptive clustering hierarchical algo- rithm. Methods--The energy factors of nodes was fir-,-t introduced to the threshold formula and then a new method of computing cluster numbers put forward. Results--The balance of network load can be ensured by controlling the number of cluster heads. Conclusion--Simulation results show that the improved algorithm effectively reduces energy consumption and prolongs the lifetime of nodes and whole network.

关 键 词：无线传感器网络 LEACH路由协议 最佳群首数 能量消耗 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]