基于延长WSN生命周期的LEACH算法的改进措施研究  

Study on improvement of LEACH algorithm based on extending WSN life cycle

作　　者：王亮云 陈建 马宇豪 管星宇 Wang Liangyun;Chen Jian;Ma Yuhao;Guan Xingyu(School of Physics and Information Engineering,Shanxi Normal University,Linfen 041004,China)

机构地区：[1]山西师范大学物理与信息工程学院,山西临汾041004

出　　处：《无线互联科技》2021年第19期112-114,125,共4页Wireless Internet Technology

摘　　要：无线传感器网络的节点总能量有限,如何有效利用节点能量,延长网络节点存活时间,是网络设计的重要内容。文章在LEACH算法的基础上提出一种改进算法——RLEACH算法。该算法通过在阈值计算公式中引入当前节点剩余能量与网络中存活节点平均能量的比值,并且将β作调节因子,提高了剩余能量高于平均值的节点当选簇头的概率,从而实现了对每一个节点能量的优化利用。经过试验仿真,结果表明,RLEACH算法与LEACH算法相比,网络生命周期延长约28.9%,传输数据量增长约196.9%。Total wireless sensor network node energy is limited,how to effectively use the node energy,prolong survival time of network nodes is an important content of network design.On the basis of the LEACH algorithm,this paper puts forward an improved algorithm RLEACH algorithm into threshold calculation the ratio of average residual energy with the rest of the node energy,introduced into the normalized factorβratio measures,so as to improve the above average residual energy of nodes was elected the probability of cluster heads,optimizing the use of the energy of each node Matlab simulation test results show that compared with LEACH algorithm,the network life cycle of RLEACH algorithm is extended by 29.4%,and the amount of transmitted data is increased by 320.4%.

关 键 词：LEACH算法 无线传感网络 簇头选取 网络平均能量 

分 类 号：TN929.5[电子电信—通信与信息系统] TP212.9[电子电信—信息与通信工程]