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DPS-MAC: An Asynchronous MAC Protocol for Wireless Sensor Networks

  • Heping Wang
  • Xiaobo Zhang
  • Farid Naït-Abdesselam
  • Ashfaq Khokhar
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4873)

Abstract

Asynchronous power efficient communication protocols are crucial to the success of wireless sensor networks (WSNs) as a distributed computing paradigm. This paper presents an improved asynchronous duty-cycled MAC protocol for WSN. It adopts a novel dual preamble sampling (DPS) approach by combining low power listening (LPL) with short strobed preambles to significantly reduce idle listening in existing protocols. In our ns-2 based experiments, the performance of the proposed solution is compared with B-MAC and X-MAC, two most recent and popular asynchronous MAC protocols for WSNs. Depending on the traffic load and preamble length, the proposed DPS-MAC improves energy consumption significantly compared to X-MAC without degrading other network performances such as delivery ratio and latency. For example for the traffic rate of 0.1 packets/s and preamble length of 0.1s, the average improvement in energy consumption compared to X-MAC is about 154%.

Keywords

Energy efficiency MAC protocol Wireless sensor network Duty cycle Low-power listening Short strobed preamble Dual preamble sampling 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Heping Wang
    • 1
  • Xiaobo Zhang
    • 1
  • Farid Naït-Abdesselam
    • 2
  • Ashfaq Khokhar
    • 1
  1. 1.University of Illinois at ChicagoUSA
  2. 2.University of Lille – INRIAFrance

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