基于权重的NPCHS-Leach协议簇头选取策略优化研究 |
| |
引用本文: | 王灵矫,彭志强,李哲涛,郭华,钟益群. 基于权重的NPCHS-Leach协议簇头选取策略优化研究[J]. 传感技术学报, 2015, 28(12): 1846-1852. DOI: 10.3969/j.issn.1004-1699.2015.12.020 |
| |
作者姓名: | 王灵矫 彭志强 李哲涛 郭华 钟益群 |
| |
作者单位: | 湘潭大学信息工程学院,湖南湘潭411105; 湖南省湘潭大学智能计算与信息处理教育部重点实验室,湖南湘潭411105 |
| |
基金项目: | 湘潭大学项目,国家自然科学基金面上项目 |
| |
摘 要: | Leach协议的提出很大程度上延长了网络的生命周期,但簇头的选取并未考虑当前节点剩余能量和节点分布情况,导致网络能量消耗不平衡。改进的簇头选择协议NCHS-Leach(Novel Cluster Head Selecting Leach)存在没有考虑节点当选簇头次数以及节点距离基站的距离等问题。据此,该文提出了改进协议—基于权值的簇头选取NPCHS-Leach(Novel Power Clus?ter Head Selecting Leach)协议,在选取簇头节点时综合考虑节点的剩余能量、距离、节点成为簇头的次数以及侦听密度,优化簇头节点选取策略延长网络生命周期。通过MATLAB工具软件随机建立的网络拓扑模拟NPCHS-Leach协议、Leach协议以及NCHS-Leach协议的运行,其仿真结果表明该协议比NCHS-Leach协议延长网络生命周期40~50%。
|
关 键 词: | 无线传感器网络 低能耗 权重 分簇 Leach协议 |
An Optimal Clustering Selection Strategy Study on the Weighted NCHS-Leach Protocol |
| |
Abstract: | The Leach protocol has been proposed to much extend the life cycle of the network,but the selection of cluster heads has not considered the present residual energy of nodes and nodes distribution,which leads to unbal?anced energy consumption of the network. Its improved NCHS-Leach protocol has exist several problems,such as it does not consider the number of a node being elected cluster head node and the distance from the base station to clus?ter head node. Accordingly,this paper proposes an improved protocol,the NPCHS-Leach protocol,which comprehen?sively considers nodes’residual energy,the distance from the base station to the cluster head node,the number of a node being a cluster head and listen density to optimize the selection strategy of cluster head node to extend the net?work life cycle while selecting the cluster head nodes. Through a network topology established randomly by MATLAB simulates the operation of NPCHS-Leach protocol,Leach protocol and NCHS-Leach protocol,the simulation results show that NPCHS-Leach protocol can extend 40-50%of the network life cycle more than NCHS-Leach protocol. |
| |
Keywords: | wireless sensor networks low energy consumption weights clustering leach protocol |
本文献已被 万方数据 等数据库收录! |
| 点击此处可从《传感技术学报》浏览原始摘要信息 |
|
点击此处可从《传感技术学报》下载全文 |