Practical Concurrent Wireless Charging Scheduling for Sensor Networks

Peng Guo, Xuefeng Liu, Tingfang Tang, Shaojie Tang, Jiannong Cao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)


In complex terrain where mobile chargers hardly move around, a feasible solution to charge wireless sensor networks (WSNs) is using multiple fixed chargers to charge WSNs concurrently with relative long distance. Due to the radio interference in the concurrent charging, it is needed to schedule the chargers so as to facilitate each sensor node to harvest sufficient energy quickly. The challenge lies that each charger's charging utility cannot be calculated (or even defined) independently due to the nonlinear superposition charging effect caused by the radio interference. In this paper, we model the concurrent radio charging, and formulate the concurrent charging scheduling problem (CCSP) whose objective is to design a scheduling algorithm for the chargers so as to minimize the time spent on charging each sensor node with at least energy E. We prove that CCSP is NP-hard, and propose a greedy algorithm based on submodular set cover problem. We also propose a genetic algorithm for CCSP. Simulation results show that the performance of the greedy CCSP algorithm is comparable to that of the genetic algorithm.
Original languageEnglish
Title of host publicationProceedings - 2016 IEEE 36th International Conference on Distributed Computing Systems, ICDCS 2016
Number of pages2
ISBN (Electronic)9781509014828
Publication statusPublished - 8 Aug 2016
Event36th IEEE International Conference on Distributed Computing Systems, ICDCS 2016 - Nara, Japan
Duration: 27 Jun 201630 Jun 2016


Conference36th IEEE International Conference on Distributed Computing Systems, ICDCS 2016


  • nonlinear superposition charging effect
  • scheduling
  • submodular set cover
  • wireless charging
  • Wireless Sensor Network (WSN)

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Software

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