DefinePK

Abstract

With the advances in technology, there has been an increasing interest in the use of wireless sensor networks (WSNs). WSNs are vulnerable to a wide class of attacks among which sinkhole attack puts severe threats to the security of such networks. The problems of sinkhole detection and mitigation have been studied through various methods, but suffer with the problems of high complex detection and overhead introduced by detection process. The quality of service has been degraded greatly by the impact of sinkhole attack because the malicious node can read much information about the source or the communications; this helps malicious nodes to perform various kinds of attacks. In order to overcome such drawbacks of network security, we propose a novel approach for sinkhole detection to support Quality of Service (QOS) development of wireless sensor networks. The method acts as a distributed one where the sinkhole detection is performed in all the nodes of the network. The node collects the neighbor information about the location and other transmission details. From the collected neighbor information, the node which presents in many nodes neighbor matrix is identified. The problem of multiple identification is resolved by verifying the transmission performed through other neighbors of the malicious node. From the traffic incurred in the neighbor of malicious node is used to verify the location or traffic sent by the malicious node. The method produces efficient results in sinkhole detection and increases the throughput. Also the method reduces the packet drop ratio and reduces the frequency of sinkhole detection.