Smart node relocation (SNR) and connectivity restoration mechanism for wireless sensor networks

EURASIP Journal on Wireless Communications and Networking

Safdar Zaman¹  Shahzad Ali²  Muhammad Kashif Saeed³  Muhammad Saqib⁴  Mahmood ul Hassan⁵  Amin Al Awady⁵  Khalid Mahmood⁶ 

[1] Department of Computer Science, Federal Directorate of Education;Department of Computer Science, Jouf University;Department of Computer Science, Tehama Branch, Community College, King Khalid University;Department of Computer Science, Turaif Community College, Northern Borders University;Department of Computer Skills, Deanship of Preparatory Year, Najran University;Department of Information Systems, Tehama Branch, College of Science and Arts, King Khalid University;

关键词: Cut-vertex;    Failure recovery;    Network connectivity;    Node relocation;    Wireless sensor network;    Node failures;   

DOI  :  10.1186/s13638-021-02053-8

来源: DOAJ

【 摘 要 】

Abstract Node failures are inevitable in wireless sensor networks (WSNs) because sensor nodes in WSNs are miniature and equipped with small and often irreplaceable batteries. Due to battery drainage, sensor nodes can fail at any instance. Moreover, WSNs operate in hostile environments and environmental factors may also contribute to nodes failure. Failure of nodes leads to disruption of inter-node connectivity and might also lead to network partitioning. Failure to communicate with each other and with the base station can compromise the basic operation of the sensor network. For restoration of connectivity, a robust recovery mechanism is required. The existing connectivity restoration mechanisms suffer from shortcomings because they do not focus on energy-efficient operation and coverage-aware mechanisms while performing connectivity restoration. As a result, most of these mechanisms lead to the excessive mobility of nodes, which itself causes the utilization of excessive battery. In this work, we propose a novel technique called smart node relocation (SNR). SNR is capable of detecting and restoring the connectivity caused by either single or multiple node failures. For achieving energy efficiency, SNR relies on transmitting a lesser number of control packets. For achieving the goal of being coverage-aware, it tries to relocate only essential nodes while trying to restore connectivity. By performing extensive simulations, we prove that SNR outperforms the existing approaches concerning multiple performance metrics including but not limited to the total number of packets transmitted, total distance moved for connectivity restoration, the percentage reduction in field coverage.

【 授权许可】

Unknown