计算机与现代化

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 无线传感器网络分簇和节点休眠综合性策略研究

  

  1. 中南大学软件学院,湖南长沙410075
  • 收稿日期:2014-09-18 出版日期:2015-04-27 发布日期:2015-04-29
  • 作者简介: 陈龙(1990-),男,湖南湘潭人,中南大学软件学院硕士研究生,研究方向:无线传感器网络; 刘莉平(1971-),女,博士研究生,副教授,研究方向:无线传感器网络; 赵明(1975-),男,博 士研究生,副教授,研究方向:无线传感器网络。
  • 基金资助:
    国家自然科学基金资助项目(61073186); 湖南省自然科学基金资助项目(13JJ3007)

 Comprehensive Strategy Research for Network Clustering and Node Sleeping

  1. School of Software, Central South University, Changsha 410075, China
  • Received:2014-09-18 Online:2015-04-27 Published:2015-04-29

摘要:

能量有限性是制约传感器网络寿命的瓶颈。在传感器网络中通常采用相似数据收集策略或者节点休眠策略来减少能耗延长网络寿命。但是以往的研究往往局限在其中一种机制:在基于相似
数据收集的分簇策略中,基本上所有的传感器节点都是处于活动状态,而在节点休眠机制中,往往也没有使用相似数据收集的思想进行网络的分簇。本文提出一种综合传感器网络分簇和节点休眠机制的
协议,将传感器网络的生命划分成若干个时间周期,在每一个时间周期中,确定每个节点的θ相似节点集并选出代表节点(Rnode)来发送感知的数据,并且休眠部分冗余的节点。仿真实验结果表明,在
保证网络覆盖的情况下,该协议能让传感器网络有更长的网络寿命。

关键词:  , 分簇; 能量消耗; 网络寿命; 节点休眠; 代表节点

Abstract:

To conserve energy, we can use method for approximate data collection. Sensor nodes with the same readings can be clustered such that only the representative
nodes report their readings. Also, we can use sensor activity scheduling mechanism that consists on turning off redundant sensors while maintaining coverage by the remaining
active nodes to prolong the life time of WSN. However, the two techniques seem independent and few works consider both of them. In this paper, we propose an efficient protocol
synthesizing network clustering and sensor activity scheduling. The proposed protocol determine θ-similar_sets of node and only the Rnode need to report their readings. Also,
the protocol divides the network lifetime into activity rounds. In each round a number of active nodes (Rnode and members) is selected to ensure coverage while others are sleep.
Compared with some existing protocols, simulation results show that our protocol can have a longer lifetime with a high network coverage.

Key words:  clustering, energy consumption, network lifetime, node sleeping, representative node