MSR : Minimum-Stop Recharging Scheme for Wireless Rechargeable Sensor Networks
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Date
2014-07-02
Journal Title
Journal ISSN
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Publisher
CERIST
Abstract
This paper deals with simultaneous energy transfer to multiple
nodes for scalable wireless recharging in wireless sensor networks. All
existing recharging schemes rely on the use of a mobile charger that roves
the network and drops by some locations for nodes recharging. However,
they focus on the efficiency of energy transfer and neglect the energy engendered
by the charger movement. This is tackled in this paper, where
the wireless charging is modeled as a path optimization problem for the
mobile charger, with objective function to minimizing the number of
stop locations in the path. Due to the NP-harness of the problem, we
propose a simple but efficient heuristic. It is based on clique partitioning
to find the minimum number of locations allowing the mobile charger
to replenish all the node’s batteries in the network. Evaluation results
demonstrate that the proposed approach significantly reduces the total
energy consumption of the mobile charger, while using a low-complexity
techniques that permit scalability to a higher number of nodes.
Description
Keywords
wireless sensor networks, Wireless recharging,, multi-node energy transfer, tour planing, magnetic resonance coupling