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Issue No. 06 - June (2013 vol. 12)
ISSN: 1536-1233
pp: 1214-1224
Heejung Byun , Suwon University, Hwaseong-si
Junglok Yu , Korea Institute of Science and Technology Information, Daejeon
This paper proposes a control-based approach to the duty cycle adaptation for wireless sensor networks. The proposed method controls the duty cycle through the queue management to achieve high-performance under variable traffic rates. To have energy efficiency while minimizing the delay, we design a feedback controller, which adapts the sleep time to the traffic change dynamically by constraining the queue length at a predetermined value. In addition, we propose an efficient synchronization scheme using an active pattern, which represents the active time slot schedule for synchronization among sensor nodes, without affecting neighboring schedules. Based on the control theory, we analyze the adaptation behavior of the proposed controller and demonstrate system stability. The simulation results show that the proposed method outperforms existing schemes by achieving more power savings while minimizing the delay.
Delay, Synchronization, Switching circuits, Wireless sensor networks, Schedules, Protocols, Stability analysis, control, Wireless sensor networks, energy efficiency, delay, queue management

J. Yu and H. Byun, "Adaptive Duty Cycle Control with Queue Management in Wireless Sensor Networks," in IEEE Transactions on Mobile Computing, vol. 12, no. , pp. 1214-1224, 2013.
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