Review on target coverage and network connectivity in Mobile Sensor Networks

Target Coverage and network connectivity are two main challenging and practically important issues of Mobile Sensor Networks (MSNs). Target coverage covers a set of specified points of interest in the deployment region of a WSN. Target coverage guarantees that every location in the sensing field is covered by at least one sensor and Network Connectivity guarantees that there are sufficient routing paths between sensors. Connectivity is necessary for sensors to collect data and report data to the sink node. Target Coverage and Network Connectivity may also affect the quality of network. Many studies have been introduced to improve the quality of coverage and network connectivity. In this paper, the study of different approaches which improves quality of both Target coverage and Network connectivity, are presented with their features and drawbacks. Improving both Target coverage and Network Connectivity by minimizing the number of sensors used and sensor´s movement distance is the important issue in mobile sensor network.