Mobile Sensors Deployment Methods: A Review

Usage of wireless sensor networks has become inevitable in the field of international border monitoring and zone surveillance. This application of sensors requires a barrier of sensors along the border to be monitored. The more the number of barriers, the better the monitoring system. Usage of a number of sensor nodes (SNs) in a specific configuration leads to the formation of a specific number of barriers. The challenge here is to develop a deployment algorithm, which provides the maximum number of barriers with the minimum number of SN relocation. Wireless Sensor Networks are used in hazardous environments and are preferred to be aerially deployed. In this paper, various methods of Mobile Sensor deployment methods are discussed along with their pros and cons. A comparative study is done based on many factors such as relocation distance, obstacle avoidance, scalability, etc.