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Open AccessArticle

Optimized Charging Scheduling with Single Mobile Charger for Wireless Rechargeable Sensor Networks

1
School of Medical Information Engineering, Jining Medical University, Rizhao 276826, China
2
College of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
*
Author to whom correspondence should be addressed.
Symmetry 2017, 9(11), 285; https://doi.org/10.3390/sym9110285
Received: 7 October 2017 / Revised: 15 November 2017 / Accepted: 16 November 2017 / Published: 21 November 2017
Due to the rapid development of wireless charging technology, the recharging issue in wireless rechargeable sensor network (WRSN) has been a popular research problem in the past few years. The weakness of previous work is that charging route planning is not reasonable. In this work, a dynamic optimal scheduling scheme aiming to maximize the vacation time ratio of a single mobile changer for WRSN is proposed. In the proposed scheme, the wireless sensor network is divided into several sub-networks according to the initial topology of deployed sensor networks. After comprehensive analysis of energy states, working state and constraints for different sensor nodes in WRSN, we transform the optimized charging path problem of the whole network into the local optimization problem of the sub networks. The optimized charging path with respect to dynamic network topology in each sub-network is obtained by solving an optimization problem, and the lifetime of the deployed wireless sensor network can be prolonged. Simulation results show that the proposed scheme has good and reliable performance for a small wireless rechargeable sensor network. View Full-Text
Keywords: wireless rechargeable sensor network; mobile charger; recharging; energy consumption wireless rechargeable sensor network; mobile charger; recharging; energy consumption
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Wang, Q.; Kong, F.; Wang, M.; Wang, H. Optimized Charging Scheduling with Single Mobile Charger for Wireless Rechargeable Sensor Networks. Symmetry 2017, 9, 285.

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