Detecting Hole Boundary Nodes in WSN under Distributed Environment

WSN have several inherent limitations. In several applications of WSNs each point in the field is required to be sensed by some sensors. A network of this type is called a sensing covered network. In random deployment, avoidance of holes (a region with no point within sensing range of nodes) is very difficult. We develop an efficient distributed technique to detect boundary nodes of a hole. We also propose an efficient distributed technique to detect a hole, if it exists at all, in the region.