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An energy efficient simultaneous-node repositioning algorithm for mobile sensor networks.

Muhammad Amir Khan1, Halabi Hasbullah2, Babar Nazir3

  • 1Department of Computer and Information Sciences, Universiti Teknologi Petronas, 31750 Tronoh, Perak, Malaysia ; Department of Electrical Engineering, COMSATS Institute of Information Technology, University Road, Tobe Campus, Abbottabad 22060, Pakistan.

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Summary
This summary is machine-generated.

This study introduces a novel algorithm for wireless sensor networks (WSNs) that restores connectivity after node failure while maintaining area coverage. The method involves neighbors temporarily repositioning to fill gaps, ensuring network integrity.

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Area of Science:

  • Computer Science
  • Network Engineering
  • Robotics

Background:

  • Wireless Sensor Networks (WSNs) are increasingly used in critical applications like search and rescue and battlefield reconnaissance.
  • Maintaining network connectivity is crucial for WSN effectiveness, especially with mobile nodes.
  • Sudden node failures can lead to network partitioning and communication disruptions.

Purpose of the Study:

  • To address the dual challenges of connectivity restoration and coverage preservation in WSNs after node failure.
  • To propose a novel algorithm that integrates both connectivity and coverage maintenance.
  • To overcome limitations of existing methods that often neglect coverage loss during connectivity repair.

Main Methods:

  • A novel simultaneous-node repositioning algorithm is introduced.
  • Neighboring nodes of a failed node temporarily move to occupy its position.
  • Nodes return to their original locations after a specified duration, ensuring dynamic coverage.

Main Results:

  • The proposed algorithm effectively restores network connectivity following node failure.
  • It simultaneously ensures that the coverage of the area of interest is maintained.
  • Simulation results verify the algorithm's effectiveness in integrated connectivity and coverage management.

Conclusions:

  • The developed algorithm offers an integrated solution for WSNs facing node failures.
  • It successfully balances the need for continuous connectivity with the requirement for complete area coverage.
  • This approach enhances the robustness and reliability of WSNs in dynamic environments.