Energy Aware Fault Of Wireless Sensor Networks

3453 Words14 Pages
Energy Aware Fault Tolerance in Wireless Sensor Networks

Nisha Narayanan
CECS Department
California State University, Long Beach
Long Beach, CA, United States nishas6@gmail.com Disha Gupta
CECS Department
California State University, Long Beach
Long Beach, CA, United States gdisha777@gmail.com Abstract

Technological developments have to such an outbreak in Wireless Sensor Networks (WSNs), they are used in a wide variety of today’s industrial and consumer applications and holds limitless future potentials for any type of ambience surveillance, hence fault tolerance in WSNs which are easily prone to failure, is crucial. WSN’s comprised of tiny sensor devices (sensor nodes) and the wireless network itself. A node consists of
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Keywords component: WSN, network lifetime, fault detection algorithm, node energy consumption, secure routing, communication faults, reliability

1. Introduction The sensor nodes in a Wireless Sensor Network (WSN) are used for surveillance of ambient environment, which can be unpredictable. The sensor nodes are often exposed to harsh surroundings, which could lead to many problems like failure of the sensing unit, radio transceiver, and processors; not just that, also sensor node death occurs due to energy crunch eventually. So it’s understood that faults directly affect the network lifetime of a Wireless Sensor Network. Wireless Sensor Network Lifetime means the time period required for the network to function with the collective effort of sensors even if some of the nodes have failed. When this percentage of failed nodes increases, fault prevention and avoidance strategies are needed to be applied to improve reliability and performance of the network. A reliable WSN yields accurate results. For fault tolerance in WSN, maintenance of a consistent quality of service (QoS) is necessary. Also energy efficiency comes into picture, which is a difficult task to achieve.
There are also some software failures related to the operating system or embedded programs in the sensor. WSN has a tolerance level that defines the capacity it would have to deal with the various faults of the sensors. The degree of tolerance depends on the three
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