计算机应用 ›› 2012, Vol. 32 ›› Issue (06): 1516-1518.DOI: 10.3724/SP.J.1087.2012.01516

• 网络与通信 • 上一篇    下一篇

无线传感网中基于唤醒机制的覆盖洞修复方法

胥楚贵1,邓晓衡2   

  1. 1. 三明学院 数学与信息工程学院,福建 三明 365004
    2. 中南大学 信息科学与工程学院, 长沙 410083
  • 收稿日期:2011-11-08 修回日期:2012-01-14 发布日期:2012-06-04 出版日期:2012-06-01
  • 通讯作者: 胥楚贵
  • 作者简介:胥楚贵(1982-),男,湖南衡阳人,硕士,主要研究方向:无线传感器网络;〓邓晓衡(1974-),男,湖南衡阳人,教授,博士,主要研究方向:可信网络、网络优化、网络计算。
  • 基金资助:
    国家自然科学基金资助项目;福建省教育厅A类科技项目;三明学院自然科学研究基金项目

Method to repair coverage holes based on wake-up mechanism in wireless sensor networks

XU Chu-gui1,DENG Xiao-heng2   

  1. 1. Institute of Mathematics and Information Engineering, Sanming University, Sanming Fujian 365004,China
    2. College of Information Science and Engineering, Central South University, Changsha Hunan 410083,China
  • Received:2011-11-08 Revised:2012-01-14 Online:2012-06-04 Published:2012-06-01
  • Contact: XU Chu-gui

摘要: 针对无线传感器网络中节点因能量耗尽或环境破坏而失效导致产生覆盖空洞现象,提出了一种基于唤醒机制的定向最远非活跃邻节点优先覆盖洞修复策略(DFNFP)。该方法通过覆盖洞边界节点从其邻接表中选择距离其中心最远的非活跃节点替换失败节点,并激活替换节点达到修复覆盖洞目的。仿真结果表明,该方法能保证较好的网络覆盖质量,充分利用了能量资源,延长了网络的生存周期,且在修复空洞的所需平均时间和能耗方面,DFNFP优于最佳匹配节点策略(BFNP)。

关键词: 无线传感器网络, 覆盖洞, 覆盖质量, 生存时间

Abstract: The failed nodes lead to the phenomenon of coverage holes in wireless sensor networks, which is due to the exhausted energy and destroyed environment. In this paper, the Directed Furthest Node First Policy (DFNFP) is proposed to solve this problem. The method will repair coverage holes by the principle that the boundary nodes of coverage holes select from its neighbor table the non-active node farthest from the center to replace the failed node and activate the replacement node.The simulation results show DFNFP can maintain better quality of coverage, and make full use of energy resources, and extend lifetime of networks, moreover, DFNFP is superior to Best Fit Node Policy (BFNP) in average time and energy consumption for repairing the coverage holes.

Key words: wireless sensor networks, coverage holes, quality of coverage, lifetime

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