Node Coverage Optimization Strategy Based on Ions Motion Optimization

This paper proposes a novel coverage strategy approach based on Ions Motion Optimization (IMO) for optimal coverage problem in the wireless sensor networks (WSN). In specific arear, how to reasonably arrange the sensor nodes to achieve the best coverage is the key to improving whole network performance. The node-coverage of the monitored area is modeled for objective function by the probability of each node to pixel and the joint coverage of each pixel point into the region for a whole network coverage optimization. Simulations of the coverage strategy are implemented in different scenario densities for optimal coverage. The results compared with the other approaches in the literature shows that the proposed approach can provide the effectively improving convergence speed and coverage rate of nodes, so leading to whole network coverage effect and prolonging network lifetime.