research unit 1

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Type of publication:Inproceedings
Entered by:chita
TitleEfficient energy management in wireless rechargeable sensor networks
Bibtex cite IDRACTI-RU1-2012-15
Booktitle 15th ACM International Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems (IEEE MSWiM) 2012
Year published 2012
Pages 309-316
Organization 15th ACM International Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems (IEEE MSWiM) 2012
Location Paphos, Cyprus
Keywords Sensor Networks,Energy Eciency,Mobility,Distributed Algorithms,Wireless Recharging
Through recent technology advances in the eld of wireless energy transmission, Wireless Rechargeable Sensor Networks (WRSN) have emerged. In this new paradigm for WSNs a mobile entity called Mobile Charger (MC) traverses the network and replenishes the dissipated energy of sensors. In this work we rst provide a formal de nition of the charging dispatch decision problem and prove its computational hardness. We then investigate how to optimize the tradeo s of several critical aspects of the charging process such as a) the trajectory of the charger, b) the di erent charging policies and c) the impact of the ratio of the energy the MC may deliver to the sensors over the total available energy in the network. In the light of these optimizations, we then study the impact of the charging process to the network lifetime for three characteristic underlying routing protocols; a greedy protocol, a clustering protocol and an energy balancing protocol. Finally, we propose a Mobile Charging Protocol that locally adapts the circular trajectory of the MC to the energy dissipation rate of each sub-region of the network. We compare this protocol against several MC trajectories for all three routing families by a detailed experimental evaluation. The derived ndings demonstrate signi cant performance gains, both with respect to the no charger case as well as the di erent charging alternatives; in particular, the performance improvements include the network lifetime, as well as connectivity, coverage and energy balance properties.
Angelopoulos, Constantinos Marios
Nikoletseas, Sotiris
Raptis, Theofanis
Raptopoulos, Christoforos
Vasilakis, Filippos
mswim050-angelopoulos.pdf (main file)
Publication ID963