Modern Operating Systems
Proceedings of the 7th ACM Conference on Embedded Networked Sensor Systems
Proceedings of the 13th ACM international conference on Modeling, analysis, and simulation of wireless and mobile systems
Prolonging Sensor Network Lifetime Through Wireless Charging
RTSS '10 Proceedings of the 2010 31st IEEE Real-Time Systems Symposium
Efficient energy management in wireless rechargeable sensor networks
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
Multi-vehicle Coordination for Wireless Energy Replenishment in Sensor Networks
IPDPS '13 Proceedings of the 2013 IEEE 27th International Symposium on Parallel and Distributed Processing
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We investigate the problem of efficient wireless energy recharging in Wireless Rechargeable Sensor Networks (WRSNs). In such networks special mobile entities (called the Mobile Chargers) traverse the network and wirelessly replenish the energy of sensor nodes. In contrast to most current approaches, we envision methods that are distributed and use limited network information. We propose four new protocols for efficient recharging, addressing key issues which we identify, most notably (i) what are good coordination procedures for the Mobile Chargers and (ii) what are good trajectories for the Mobile Chargers. Two of our protocols (DC, DCLK) perform distributed, limited network knowledge coordination and charging, while two others (CC, CCGK) perform centralized, global network knowledge coordination and charging. As detailed simulations demonstrate, one of our distributed protocols outperforms a known state of the art method, while its performance gets quite close to the performance of the powerful centralized global knowledge method.