Fault Prediction and Relay Node Placement in Wireless Sensor Network - A Survey

A collection of a sensor nodes which co-ordinate with each other in a sensor network. . The WSN have become popular due to their various varieties of real world applications. Failures are occurring in WSN due to many reasons such as communication link failures, battery exhaustion, environmental hazards, hardware failures or malfunctioning, this may reduce the reliability of WSN network to act as monitoring systems for networks. In WSN networks detection of an event by nodes is one of the most important application of wireless sensor network, because of impact of environmental factor or faults. In this paper we concentrate on the prediction models in WSN to be useful for predict the faulty nodes in WSN and repair the faulty nodes by using Relay Node Placement.