Hole Detection and Healing in Wireless Sensor Network

A wireless sensor network (WSN) is one of the fundamental services provided by the monitoring of a specific Region of Interest (RoI). WSNs due to holes in RoI exposure is unavoidable considering the fact that the inner nature, environmental factors, random Uses, and external attacks, is to ensure that revenue is covered completely and consistently Key. This paper seeks to issue mobile WSNs hole detection and healing. We are discussing the main drawbacks We ensure the security of mobile WSNs effective solutions will be critical for the identification of four main components: 1) determining the boundary of the Region of Interest, 2) detecting coverage holes and estimating their characteristics, 3) determining the best locations to relocate mobile nodes to repair holes, and 4) dispatching mobile nodes to the best target locations while minimizing the moving and messaging cost. We present two novel distributed algorithms for hole detection in a wireless sensor network (WSN) based on the fault on the region. The first which we refer to as the Distributed Hole Detection (DHD), this method relies on the Delaunay triangulation of the underlying communication graph of the WSN. The second one treats the hole healing with novel concept called the backpressure routing algorithm is a centralized method for directing traffic around a queuing network that achieves maximum network throughput.