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Energy-Efficient Deadline-Aware Data-Gathering Scheme Using Multiple Mobile Data Collectors.

Rumpa Dasgupta1, Seokhoon Yoon2

  • 1Department of Electrical and Computer Engineering, University of Ulsan, Ulsan 680-749, Korea. rumpa.dasgupta3949@gmail.com.

Sensors (Basel, Switzerland)
|April 4, 2017
PubMed
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Mobile data collectors (MDCs) offer an energy-efficient solution for wireless sensor networks, addressing multi-hop forwarding issues. This study optimizes MDC paths to minimize energy use and meet delay constraints, improving data collection.

Area of Science:

  • Computer Science
  • Electrical Engineering
  • Network Engineering

Background:

  • Wireless sensor networks (WSNs) often use multi-hop forwarding for data collection, which can be energy-inefficient and suffer from connectivity issues in large areas.
  • The energy hole problem and high communication overhead are significant challenges in traditional WSN data forwarding.
  • Mobile Data Collectors (MDCs) present a promising alternative for data gathering and sensor recharging.

Purpose of the Study:

  • To address the limitations of multi-hop forwarding in WSNs by proposing a data collection scheme using MDCs.
  • To optimize the traveling paths of MDCs to minimize energy consumption while satisfying packet-delay constraints.
  • To introduce and solve the delay-constrained energy minimization (DCEM) problem for efficient MDC path planning.
Keywords:
data-gatheringdelay constraintenergy constraintmultiple mobile data collectorswireless power transfer

Related Experiment Videos

Main Methods:

  • Defined the delay-constrained energy minimization (DCEM) problem.
  • Formulated an integer linear programming (ILP) model for the optimal solution of the DCEM problem.
  • Developed a two-phase path-selection algorithm for efficient DCEM problem-solving.

Main Results:

  • The proposed algorithms were compared against heuristic algorithms for the vehicle routing problem through simulations.
  • Simulation results demonstrated that the proposed algorithms outperform existing methods in energy efficiency.
  • The study confirmed the effectiveness of the proposed algorithms in meeting packet-delay constraints.

Conclusions:

  • MDC-based data collection schemes can overcome the limitations of multi-hop forwarding in WSNs.
  • Optimized MDC path planning is crucial for balancing energy efficiency and delay constraints.
  • The proposed DCEM problem formulation and algorithms provide an effective solution for efficient data collection in WSNs.