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Adaptive Duty Cycling MAC Protocols Using Closed-Loop Control for Wireless Sensor Networks
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  • Adaptive Duty Cycling MAC Protocols Using Closed-Loop Control for Wireless Sensor Networks
  • Adaptive Duty Cycling MAC Protocols Using Closed-Loop Control for Wireless Sensor Networks
저자명
Kim. Jae-Hyun,Kim. Seog-Gyu,Lee. Jai-Yong
간행물명
KSII Transactions on internet and information systems : TIIS
권/호정보
2011년|5권 1호|pp.105-122 (18 pages)
발행정보
한국인터넷정보학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The fundamental design goal of wireless sensor MAC protocols is to minimize unnecessary power consumption of the sensor nodes, because of its stringent resource constraints and ultra-power limitation. In existing MAC protocols in wireless sensor networks (WSNs), duty cycling, in which each node periodically cycles between the active and sleep states, has been introduced to reduce unnecessary energy consumption. Existing MAC schemes, however, use a fixed duty cycling regardless of multi-hop communication and traffic fluctuations. On the other hand, there is a tradeoff between energy efficiency and delay caused by duty cycling mechanism in multi-hop communication and existing MAC approaches only tend to improve energy efficiency with sacrificing data delivery delay. In this paper, we propose two different MAC schemes (ADS-MAC and ELA-MAC) using closed-loop control in order to achieve both energy savings and minimal delay in wireless sensor networks. The two proposed MAC schemes, which are synchronous and asynchronous approaches, respectively, utilize an adaptive timer and a successive preload frame with closed-loop control for adaptive duty cycling. As a result, the analysis and the simulation results show that our schemes outperform existing schemes in terms of energy efficiency and delivery delay.