An energy-efficient real-time scheduling scheme on dual-channel networks

  • Authors:
  • Mikyung Kang;Dong-In Kang;Jinwoo Suh;Junghoon Lee

  • Affiliations:
  • University of Southern California - Information Sciences Institute East, 3811 N. Fairfax Drive, Suite 200, Arlington, VA 22203, United States;University of Southern California - Information Sciences Institute East, 3811 N. Fairfax Drive, Suite 200, Arlington, VA 22203, United States;University of Southern California - Information Sciences Institute East, 3811 N. Fairfax Drive, Suite 200, Arlington, VA 22203, United States;Department of Computer Science and Statistics, Cheju National University, Jeju, Republic of Korea

  • Venue:
  • Information Sciences: an International Journal
  • Year:
  • 2008

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Abstract

The recent evolution of wireless sensor networks have yielded a demand to improve energy-efficient scheduling algorithms and energy-efficient medium access protocols. This paper proposes an energy-efficient real-time scheduling scheme that reduces power consumption and network errors on dual channel networks. The proposed scheme is based on a dynamic modulation scaling scheme which can scale the number of bits per symbol and a switching scheme which can swap the polling schedule between channels. Built on top of EDF scheduling policy, the proposed scheme enhances the power performance without violating the constraints of real-time streams. The simulation results show that the proposed scheme enhances fault-tolerance and reduces power consumption.