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An Energy-Efficient Charging Scheme in Wireless Sensor Networks
  • Cheng Hu
  • Yun Wang
  • Ling Zhou
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8351)

Abstract

Energy problem is a long-lasting and fundamental problem faced by many applications of wireless sensor networks (WSNs). In this paper, a mobile charger is employed in a WSN to recharge the sensor nodes, such that the WSN can be operational continuously. The objective is to minimize the total energy consumption of the mobile charger. In order to achieve the goal, a novel charging scheme, named COST, has been proposed. It is the first work that considers redeploying a service station to the hot spot of energy consumption of a WSN for energy saving. In addition, its charging schedule of the mobile charger not only ensures continuous liveness of a WSN, but also presents some periodicity. The major inspiration of the COST lies in the extremely imbalanced energy consumption of the sensor nodes in a WSN. Simulation results validate the energy efficiency of the COST.

Keywords

Rechargeable sensor networks mobile charger energy problem service station redeployment charging schedule 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Cheng Hu
    • 1
  • Yun Wang
    • 1
  • Ling Zhou
    • 1
  1. 1.School of Computer Science and EngineeringSoutheast UniversityNanjingChina

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