Delay Aware Efficient Mobile Sink Path with Distributed Fault Detection and Recovery in Wireless Sensor Networks

Abstract

In Wireless Sensor Networks mobile sinks help in balancing the network and reduce energy consumption in addition to solving hotspot issues. These benefits of a mobile sink depend on the path of the mobile sink. Specifically, in critical applications such as fire detection data needs to be collected with minimum delay. In such systems, the number of RPs is minimized to satisfy the shortest path criteria, which in turn burdens the selected RPs and depletes their energy. An efficient mobile sink path with minimum delay is proposed considering node densities. An additional set of RPs is formed by selecting nodes with minimum distance without increasing the path length of the mobile sink. Further, an effective method for the detection and recovery of uncovered nodes due to the failure of RP is proposed. Simulations are performed and the results are compared with existing methods in terms of network lifetime, fault tolerance, etc.