A pseudo-random asynchronous duty cycle MAC protocol in wireless sensor networks

Authors:
Hanjin Lee;Jaeyoung Hong;Suho Yang;Ingook Jang;Hyunsoo Yoon
Affiliations:
Department of Computer Science, KAIST, Republic of Korea;Department of Computer Science, KAIST, Republic of Korea;Department of Computer Science, KAIST, Republic of Korea;Department of Computer Science, KAIST, Republic of Korea;Department of Computer Science, KAIST, Republic of Korea
Venue:
IEEE Communications Letters
Year:
2010

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Abstract

We propose a pseudo-random asynchronous duty cycle MAC protocol in wireless sensor networks. The proposed protocol adopts a hash function to determine the next wakeup times. As the next wake-up times are known in advance, the sensor nodes do not need to remain active until their intended receivers wake up. Given an end-to-end delay requirement, the proposed protocol significantly decreases energy consumption by reducing the idle listening time.