Coverage hole elimination based on sensor intelligent redeployment in WSN

Coverage hole will bring about event detection lost or detection error and seriously damage the quality of monitoring in WSN. This paper propose an intelligent strategy called the improved hybrid particle swarm algorithm (IHPSA) to repair coverage hole. In hybrid sensor network, this scheme considers the displacement of mobile sensors, energy consumption and energy balancing together, effectively schedules the redundant mobile sensors to repair coverage holes by moving to appropriate locations, then improves the event detection rate. Simulation result shows that this moving algorithm brings better coverage function and higher capacity of event detection.