A Review on Fault Detection and Tolerance in Wireless Sensor Networks
نویسندگان
چکیده
A Wireless Sensor Network (WSN) is a special case of wireless ad hoc network consisting of a large no of Sensor Nodes(SNs) where each SN consists of a microcontroller, memory, battery unit together with a communication interface. WSNs are having a variety of applications in industrial, medical and military areas. Sensing is performed by the SNs and sensed data is processed and shared via a radio communication unit to a sink or base station. Sensor networks are more prone to error failures due to their unique characteristics. A fault represents the incorrect state of hardware or software as a consequence of a failure of a component. Since WSNs are more prone to failures due to battery depletions, hardware failures, communication link failures, fault detection and to get the desired level of functionality in the presence of fault is necessary. In this paper self healing and some of the fault tolerant mechanisms for Wireless Sensor Networks are
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