Coverage Problems in WSNs: Current Development and Key Technology

Wireless sensor networks are composed of a series of sensors deployed in a certain location, which have been widely used in industrial, environmental, military, and health fields in recent years. The node deployment of sensors provides coverage for the area of interest and ensures the connection and communication of the wireless network. The coverage problem was investigated thoroughly in the literature and several algorithms and techniques were proposed. This paper summarizes the status of the research, different types of coverage, common sensing models and optimization algorithm used in coverage problems.