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A Survey of Boundary Nodes and Coverage Holes Detection Methods in Wireless Sensor Networks (WSNs)

T. Rajkumar

Abstract


Wireless Sensor Network (WSN) coverage unity is a significant Quality of Service (QoS) assess. It is generally supposed with the purpose of events happening in the sensor field will constantly be detected. However it becomes very difficult task since of coverage holes might exist in WSNs appropriate to existence of obstacles or null sensor nodes in the sensing area. Usually, the holes construct the data routing failure while the nodes broadcast their information reverse to the sink.  In this review paper focuses on the detection of boundary nodes and coverage holes, which is significantly essential in the direction of checking the improvement of coverage holes and make sure about the transmission of data. This paper discuss about the details of various distributed methods to detect the boundary nodes neighbouring the holes of the sensing area in WSNs not including by means of any location data. It also discusses about the details of various categories of holes and importance of hole discovery in WSNs. Various types of coverage hole identification schemes with their strengths and weakness are discussed. Moreover, identification schemes are able to give enhanced performance and importance of several scope research directions.

 


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References


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