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      Active node determination for correlated data gathering in wireless sensor networks

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      Author
      Karasabun, E.
      Korpeoglu, I.
      Aykanat, Cevdet
      Date
      2013-04-07
      Source Title
      Computer networks
      Print ISSN
      1389-1286
      Publisher
      Elsevier BV
      Volume
      57
      Issue
      5
      Pages
      1124 - 1138
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      In wireless sensor network applications where data gathered by different sensor nodes is correlated, not all sensor nodes need to be active for the wireless sensor network to be functional. Given that the sensor nodes that are selected as active form a connected wireless network, the inactive sensor nodes can be turned off. Allowing some sensor nodes to be active and some sensor nodes inactive interchangably during the lifecycle of the application helps the wireless sensor network to have a longer lifetime. The problem of determining a set of active sensor nodes in a correlated data environment for a fully operational wireless sensor network can be formulated as an instance of the connected correlation-dominating set problem. In this work, our contribution is twofold; we propose an effective and runtime-efficient iterative improvement heuristic to solve the active sensor node determination problem, and a benefit function that aims to minimize the number of active sensor nodes while maximizing the residual energy levels of the selected active sensor nodes. Extensive simulations we performed show that the proposed approach achieves a good performance in terms of both network lifetime and runtime efficiency. © 2012 Elsevier B.V. All rights reserved.
      Keywords
      Wireless sensor networks
      Correlated data gathering
      Active sensor node determination
      Permalink
      http://hdl.handle.net/11693/13053
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/j.comnet.2012.11.018
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