Fault Tolerance in Wireless Sensor Network

Abstract: Wireless sensors which are used for sensing any event can be made intelligent by adding cognitive sensors. Cognitive agents are capable of making proactive choices according to the current situation based on the requirement needed in a WSN, to achieve the end to end goals of the network deployed even during the complex situation and with constraints scenario. The cognitive layer can be added to any network deployed in any application environment and it can be made intelligent. The cognitive sensor is a recent technology, and this literature survey reviews how cognitive layer has been implemented in various applications. Energy loss is one of the major impediments in all WSNs. This literature survey shows how energy efficiency can be minimized.

Keywords: Cognitive Sensor, Energy Efficient, Reliable, Cost - effective