Abstract
In this paper, we focus on the dynamic collaborative charging scheduling problem with multiple Mobile Chargers (MCs) in the Wireless Rechargeable Sensor Networks (WRSNs) with obstacles. Firstly, we use the Fresnel Diffraction Model (FDM) to describe the influences of obstacles on the charging process. Secondly, we propose a new charging group division algorithm, which can select the sets of the sensor nodes that can be charged simultaneously and determine the selection ranges of the charging spots. Thirdly, we propose a charging spots selection algorithm based on the FDM, which can not only reduce the number of sensor failures, but also guarantee the high-level charging utility. Fourthly, we propose a dynamic zonal collaborative charging scheduling scheme. It divides the charging zones to achieve balanced distribution of the charging loads. When a zone is not schedulable, our scheme will redistribute its high energy-cost charging tasks to the zone with less load for dynamic adjustment. When some charging tasks can not be adjusted, our scheme will discard the ones with less contribution, minimizing the losses of the network. Finally, we conduct a large number of simulations to verify the performances of our work. The simulation results show that our scheme has obviously better performances compared with the other arts.
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The datasets analysed during the current study are not publicly available but are available from the corresponding author on reasonable request.
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Funding
National Natural Science Foundation of China (62002145); Scientific Research Funding Projects of Liaoning Provincial Department of Education (No. JYT2020LQ01); Basic scientific Research Projects of Liaoning Provincial Department of Education (No. LJKZ1083).
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Gang Zeng’s contributions are to realize the proposed algorithm and conduct the simulations; Kun Wang’s contributions are to design the proposed algorithms and write this paper.
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Zeng, G., Wang, K. CCSO: a dynamic collaborative scheduling scheme for wireless rechargeable sensor networks with obstacles. Wireless Netw (2023). https://doi.org/10.1007/s11276-023-03402-9
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DOI: https://doi.org/10.1007/s11276-023-03402-9