A Survey on Wireless Sensor Networks Coverage Problems

Abstract

All types of applications in Wireless Sensor Network (WSN) generally faces problem of coverage as per the study. Full coverage method, being simple and easy is widely adopted theoretically. To reduce the overuse of sensor, full coverage network is composed of partial ones. Full coverage network is not best for real-world problems because of a large number of restrictions. In this survey, the characteristics of partial or probabilistic coverage problems are analyzed, and compared with full coverage problems. This survey will help to overview unsettled coverage problems. Relevant models, such as detection model, network model, and deployment model based on partial and probabilistic coverage problem are also summarized. This paper discusses three main objectives; how to maximize coverage quality, how to maximize network lifetime, and how to minimize the number of sensors for coverage problems with uncertain properties by deploying, scheduling or selecting, and regulation of sensors. Future challenges are also discussed.