Abstract
Wireless Rechargeable Sensor Networks (WRSNs) have become more and more popular thanks to the advances in wireless power transfer and battery material. The strategy followed by the charger to decide which sensor to be recharged next, is considered effective if only few sensing holes exist at any time, and their duration is short-lived. Ideally, the strategy will allow the system to be immortal; that is, all sensors are operational at all times. A recharging strategy is said to be flexible if it is effective for a wide range of parameters (i.e., for different applications).
In this paper, we analyze a simple decentralized recharging strategy which is based on local learning, operates without any a-priori knowledge of the network, has small memory requirements, and uses only local communication. We study the effectiveness and the flexibility of such a technique under a variety of ranges of the network parameters, showing its applicability to various contexts. We focus on three classes of applications that differ in network size (number of sensors), level of sensitivity of collected data, transmission rate, battery capacity, and type of mobile charger used to replenish energy. Our experiments show that in all these different settings, this simple local learning strategy is highly effective, achieving total immortality or near immortality in all cases.
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Acknowledgment
I would like to thank Prof. Nicola Santoro and Prof. Paola Flocchini for their helpful guidance and discussions.
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Aloqaily, O.I. (2021). Flexibility of Decentralized Energy Restoration in WSNs. In: Foschini, L., El Kamili, M. (eds) Ad Hoc Networks. ADHOCNETS 2020. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 345. Springer, Cham. https://doi.org/10.1007/978-3-030-67369-7_8
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DOI: https://doi.org/10.1007/978-3-030-67369-7_8
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