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      • Department of Computer Engineering
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      Coordinated movement of multiple mobile sinks in a wireless sensor network for improved lifetime

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      Author(s)
      Koç, M.
      Korpeoglu, I.
      Date
      2015
      Source Title
      Eurasip Journal on Wireless Communications and Networking
      Print ISSN
      1687-1499
      Publisher
      SpringerOpen
      Volume
      245 (2015)
      Pages
      1 - 16
      Language
      English
      Type
      Article
      Item Usage Stats
      172
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      119
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      Abstract
      Sink mobility is one of the most effective solutions for improving lifetime and has been widely investigated for the last decade. Algorithms for single-sink mobility are not directly applied to the multiple-sink case due to the latter’s specific challenges. Most of the approaches proposed in the literature use mathematical programming techniques to solve the multiple-sink mobility problem. However, doing so leads to higher complexities when traffic flow information for any possible sink-site combinations is included in the model. In this paper, we propose two algorithms that do not consider all possible sink-site combinations to determine migration points. We first present a centralized movement algorithm that uses an energy-cost matrix for a user-defined threshold number of combinations to coordinate multiple-sink movement. We also give a distributed algorithm that does not use any prior network information and has a low message exchange overhead. Our simulations show that the centralized algorithm gives better network lifetime performance compared to previously proposed MinDiff-RE, random movement, and static-sink algorithms. Our distributed algorithm has a lower network lifetime than centralized algorithms; sinks travel significantly less than in all the other schemes.
      Keywords
      Energy-efficiency
      Multiple-sink mobility
      Network lifetime improvement
      Wireless sensor network
      Algorithms
      Energy efficiency
      Mathematical programming
      Centralized algorithms
      Coordinated movement
      Effective solution
      Multiple mobile sinks
      Multiple sinks
      Network information
      Network lifetime
      Traffic flow information
      Permalink
      http://hdl.handle.net/11693/26319
      Published Version (Please cite this version)
      http://dx.doi.org/10.1186/s13638-015-0472-5
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      • Department of Computer Engineering 1510
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