Efficient power conservation mechanism in spline function defined WSN terrain

Fan Hsun Tseng, Hsin Hung Cho, Li Der Chou, Han Chieh Chao

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Coverage is a vital issue that ensures that basic functions are available in wireless sensor networks (WSNs). These functions provide communications during emergency rescue or in war environments. Sensor nodes must be dispersed and survive in place for a long time in order to accurately monitor all events. However, sensor nodes rely on limited battery energy restricted to the lifetime of the entire network. When few sensor nodes are awake during an epoch, the entire network lifetime becomes longer. This implies that the coverage problem must be solved based on the energy efficiency issue. In order to strengthen the coverage ratio with a limited number of sensor nodes, practical coverage algorithms were proposed in the existing researches but investigated in a 2-D plane, which is not suitable for a realistic environment. Few researchers have investigated the WSN coverage problem for a 3-D space. The actual terrain is rugged and bumpy that prevents deploying sensor nodes in three-dimension space. In this paper, we consider the field of interest as a complex surface but also use the spline function to obtain factual information about a complex surface. Furthermore, dynamic programming is utilized to optimize the sensing radius for reducing the power consumption.

Original languageEnglish
Article number6657718
Pages (from-to)853-864
Number of pages12
JournalIEEE Sensors Journal
Volume14
Issue number3
DOIs
StatePublished - Mar 2014

Keywords

  • Spline function
  • Wireless sensor network
  • coverage problem
  • dynamic programming
  • power consumption

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