A Review on Coverage-Hole Boundary Detection Algorithms in Wireless Sensor Networks

Abstract

Wireless sensor nodes are extremely useful in different security and surveillance related applications which may be compromised with the existence of coverage-holes. Coverage-hole is the area in a wireless sensor network (WSN) where sensing or transmitting of data is not achievable and therefore, detecting such region is a prominent research topic in WSN. Subsequent to hole-detection, another significant task is to detect the boundary nodesoutlining the coverage-holes. In this paper, we have gone through different research articles describing the various boundary-detection techniques those have been recommended to facilitate hole-detection inside the sensor network. On the basis of the literature review, we have done categorization of the boundary-detection methods, their characteristics, pros & cons and their effect on sensor network’s performance for better understanding and future reference.