Balanced-energy sleep scheduling scheme for high-density cluster-based sensor networks

Jing Deng, Yunghsiang S. Han, Wendi B. Heinzelman, Pramod K. Varshney

Research output: Contribution to journalArticle

87 Scopus citations

Abstract

In order to conserve battery power in very dense sensor networks, some sensor nodes may be put into the sleep state while other sensor nodes remain active for the sensing and communication tasks. However, determining which of the sensor nodes should be put into the sleep state is non-trivial. As the goal of allowing nodes to sleep is to extend network lifetime, we propose and analyze a Balanced-energy Scheduling (BS) scheme in the context of cluster-based sensor networks. The BS scheme aims to evenly distribute the energy load of the sensing and communication tasks among all the nodes in the cluster, thereby extending the time until the cluster can no longer provide adequate sensing coverage. Two related sleep scheduling schemes, the Distance-based Scheduling (DS) scheme and the Randomized Scheduling (RS) scheme are also studied in terms of the coefficient of variation of their energy consumption. Analytical and simulation results are presented to evaluate the proposed BS scheme. It is shown that the BS scheme extends the cluster's overall network lifetime significantly while maintaining a similar sensing coverage compared with the DS and the RS schemes for sensor clusters.

Original languageEnglish (US)
Pages (from-to)1631-1642
Number of pages12
JournalComputer Communications
Volume28
Issue number14 SPEC. ISS.
DOIs
StatePublished - Sep 1 2005

Keywords

  • Balanced-energy scheduling
  • Cluster-based
  • Energy efficiency
  • Sensor networks

ASJC Scopus subject areas

  • Computer Networks and Communications

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