An ultra low power medium access control protocol with the divided preamble sampling

  • Authors:

  • Sangsoon Lim;Youngmin Ji;Jaejoon Cho;Sunshin An

  • Affiliations:

  • Dept. of Electronics & computer Eng, Korea University, Seoul, Korea;Dept. of Electronics & computer Eng, Korea University, Seoul, Korea;Dept. of Electronics & computer Eng, Korea University, Seoul, Korea;Dept. of Electronics & computer Eng, Korea University, Seoul, Korea

  • Venue:
  • UCS'06 Proceedings of the Third international conference on Ubiquitous Computing Systems
  • Year:
  • 2006

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Abstract

This paper proposes DPS-MAC (Divided Preamble Sampling-MAC), a carrier sense Medium Access Control (MAC) protocol with ultra low power operations for wireless sensor networks. Due to battery-operated computing and sensing devices in wireless sensor networks, the development of MAC protocols that efficiently reduce power consumption is an important issue. DPS-MAC is a novel energy efficient protocol based on sampling preamble segments that have preamble offsets and next hop addresses. By using these parameters, DPS-MAC can overcome the drawbacks of long fixed preambles and overhearing in B-MAC. The divided preamble sampling technique provides not only very low power consumption when the channel is idle, but also a chance to avoid overhearing without additional overheads compared to B-MAC. This technique makes it possible to extend the lifetime of the wireless sensor networks that contain a large number of nodes. The experiment results show that DPS-MAC protocol reduces much energy consumed by receiving compared to B-MAC and can support various features of wireless sensor networks efficiently.