Adaptive k-Coverage contour evaluation and deployment in wireless sensor networks

Jang Ping Sheu, Shan Hung Wu, Yen Ting Chen, Guey Yun Chang

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The problem of coverage is a fundamental issue in wireless sensor networks. In this article, we consider two subproblems: k-coverage contour evaluation and k-coverage rate deployment. The former aims to evaluate, up to k, the coverage level of any location inside a monitored area, while the latter aims to determine the locations of a given set of sensors to guarantee the maximum increment of k-coverage rate when they are deployed into the area. For the k-coverage contour evaluation problem, a nonuniform-grid-based approach is proposed.We prove that the computation cost of our approach is at most the square root of existing solutions. Based on our k-coverage contour evaluation scheme, a greedy k-coverage rate deployment scheme (k-CRD) is proposed, which is shown to be an order faster than existing studies for k-coverage rate deployment. The k-CRD can incorporate two different heuristics to further reduce its running time. Simulation results show that k-CRD with these heuristics can be significantly more time efficient without causing much degradation in the coverage rate of final deployment.

Original languageEnglish
Article number40
JournalACM Transactions on Sensor Networks
Volume9
Issue number4
DOIs
StatePublished - Jul 2013

Keywords

  • Coverage contour
  • Coverage problem
  • Grid scan
  • Wireless sensor networks

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