Research Of Probabilistic Barrier Construction Based On Target Circle In DSN

Barrier coverage problem is a hot topic in directional sensor networks.There are few barrier coverage enhancing scheme based on probability perception.we study energy-efficient probabilistic barrier forming algorithm to extend network lifetime.The main contributions are followed:According to probability perception model,we propose a distributed barrier construction algorithm based on the target similar circle,which selects the optimal target location and target perception direction through the target similar circle,and chooses the best relay nodes based on the energy efficiency ratio in distributed manner.The simulation results show that the algorithm can effectively improve the barrier coverage efficiency and reduce energy consumption.A probabilistic barrier construction algorithm based on probabilistic target circle is proposed based on joint probability perception model,which creates a probabilistic target circle,finds the target location and sensing direction of the next node.Finally,according to the energy efficiency ratio of the nodes,we choose the best relay nodes to build barrier.Simulation results show that the algorithm can effectively improve the barrier coverage efficiency and prolong the network lifetime.An adjusting probabilistic sensing region is proposed.Combining the adjustable characteristics of the sensor radius and probability target circle,we energy-efficiently build barrier.Simulation results show that the algorithm can effectively improve the barrier coverage efficiency,reduce the number of nodes and prolong the network lifetime.