The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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An Adaptive MAC Protocol considering Real Time in Wireless Sensor Networks

  • 온정석 (연세대학교 전기전자공학과 유비넷 연구실) ;
  • 김재현 (연세대학교 전기전자공학과 유비넷 연구실) ;
  • 오영열 (연세대학교 전기전자공학과 유비넷 연구실) ;
  • 이재용 (연세대학교 전기전자공학과 유비넷 연구실)
  • Published : 2007.12.31
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Abstract

Leading MAC protocols developed for duty-cycled WSNs such as B-MAC employ a long preamble and channel sampling. The long preamble introduces excess latency at each hop and suffers from excess energy consumption at non-target receivers. In this paper we propose AS-MAC (Asynchronous Sensor MAC), a low power MAC protocol for wireless sensor networks (WSNs). AS-MAC solves these problems by employing a series of preload approach that retains the advantages of low power listening and independent sleep schedule. Moreover AS-MAC offers an additional advantage such as flexible duty cycle as data rate varies. We demonstrate that AS-MAC is better performance than B-MAC through analysis and evaluation.

Keywords

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