移动WSNs中一种覆盖空洞的修复算法  

A repair algorithm for coverage hole in mobile WSNs

作　　者：曹琰[1] 王自力[1] CAO Yan;WANG Zili(Department of Information Engineering,Zhumadian Career Technical College,Zhumadian Henan 463000,China)

机构地区：[1]驻马店职业技术学院信息工程系,河南驻马店463000

出　　处：《太赫兹科学与电子信息学报》2021年第1期145-149,共5页Journal of Terahertz Science and Electronic Information Technology

基　　金：河南省科技计划资助项目(182102210599);校级教改资助项目(2019YBJG01)。

摘　　要：基于无线传感网络的应用依赖于节点对监测区域的可靠覆盖。由于能耗殆尽或故障,节点感测能力可能失效,形成覆盖空洞区域。为此,提出基于模糊推理系统(FIS)的修复节点选取(FISS)算法。FISS算法采用自适应感测半径调整策略,利用节点的移动修复覆盖空洞。将节点的剩余能量和覆盖重叠率作为FIS的输入,并由FIS估计节点成为修复节点的权值;选择具有权值最高的节点作为修复节点,同时依据修复节点的网络条件,估算修复节点的移动方向和移动距离,最终实现对覆盖空洞区域的修复。仿真结果表明,提出的FISS算法有效提高了覆盖率,并控制了能耗。The work of Wireless Sensor Networks(WSNs)depends on reliable coverage of the area to be monitored.The problem of coverage holes arises when one or more nodes fail due to energy depletion or harsh physical environments.Therefore,Fuzzy Inference Systems(FIS)-repair node Selected(FISS)algorithm is proposed in this paper.FISS algorithm adaptively adjusts the sensing radius of node,and covers hole by moving nodes.The residual energy and coverage overlap rate of the nodes are taken as the input of FIS,and the output of FIS is to be the weight of the repair node.The node with the maximum weight is selected as the repair node.At the same time,according to the network conditions of the repair nodes,the movement direction and distance of the repair nodes are estimated.Finally,the repair of the covered void area is finally realized.Simulation results show that the proposed approach outperforms others in terms of coverage and energy consumption.

关 键 词：移动无线传感网络 覆盖空洞 空洞修复 感测半径 模糊推理系统 

分 类 号：TN711.1[电子电信—电路与系统] TP393[自动化与计算机技术—计算机应用技术]