Advances in energy harvesting technologies and ultra low-power computing and communication devices are enabling the realization of environmentally-powered wireless sensor networks (EPWSNs). Because of limited and dynamic energy supply, EPWSNs are duty-cycled to achieve energy-neutrality, a condition where the energy demand does not exceed the energy supply. Duty cycling entails nodes to sleep and wakeup according to a wakeup scheduling scheme. In this paper, we survey the various wakeup scheduling schemes, with focus on their suitability for EPWSNs. A classification scheme is proposed to characterize existing wakeup scheduling schemes, with three main categories, namely, asynchronous, synchronous, and hybrid. Each wakeup scheduling scheme is presented and discussed under the appropriate category. The paper concludes with open research issues.
Energy-harvesting; Wireless sensor network; Duty cycling; Wakeup scheduling
Operations Research, Systems Engineering and Industrial Engineering | Software Engineering
Software and Cyber-Physical Systems
VALERA, Alvin Cerdena; SOH, Wee-Seng; and Hwee-Pink TAN.
Survey on Wakeup Scheduling for Environmentally-Powered Wireless Sensor Networks. (2014). Computer Communications. 52, 21-36. Research Collection School Of Information Systems.
Available at: http://ink.library.smu.edu.sg/sis_research/2965
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