A Hole-Tolerant Redundancy Scheme for Wireless Sensor Networks
A Hole-Tolerant Redundancy Scheme for Wireless Sensor Networks
复制标题
无线传感器网络的容洞冗余方案
DOI：
10.1155/2012/320108
复制
发表时间：
2012-01-01
影响因子：
2.3
通讯作者：
Xiong, Zhang
中科院分区：
文献类型：
--
作者：
Pu, Juhua;Gu, Yu;Xiong, Zhang
在不牺牲网络覆盖和连通性的前提下最大化网络生存时间是近年来无线传感器网络研究的热点。一种常见的方法是节点调度，它动态地调度一些冗余节点关闭，并保持一些必要的节点活着，以保持网络性能。以前的研究集中在保证覆盖和连接或牺牲覆盖和连接以节省能源。在本文中，我们介绍了一种新的容错冗余方案（HRS），可以延长网络的生命周期，同时保持覆盖和连接性能。该HRS方案在确定冗余资格时可以容忍一些覆盖漏洞，因此当漏洞容忍度较高时，它会关闭更多的节点。我们的工作考虑到homoradius无线传感器网络和heteroradius无线传感器网络。仿真结果表明：（1）平均覆盖率变化不大，但网络生存时间随着空洞容限的增加而延长;（2）HRS优于现有的几种生存时间最大化方案。
Maximizing network lifetime while not sacrificing coverage and connectivity in wireless sensor networks (WSNs) has attracted many researches during the past few years. One common approach is node scheduling which dynamically schedules some redundant nodes to shut down and keeps alive some necessary nodes to preserve network performance. Previous researches focus either on guaranteeing coverage and connectivity or sacrificing coverage and connectivity to conserve energy. In this paper, we introduce a new hole-tolerant redundancy scheme (HRS) which can prolong network lifetime while maintaining coverage and connectivity performance. This HRS scheme can tolerate some coverage holes when determining redundancy eligibility, so it shuts down more nodes when hole tolerance is higher. Our work takes into account both homoradius WSNs and heteroradius WSNs. The simulation results show that (1) the average coverage percentage varies mildly but network lifetime is prolonged as hole tolerance increases; (2) HRS outperforms several existing lifetime maximization schemes.