Sharma, Pradeep Kumar (2013) Localization Against Wormhole Attacks in Wireless Sensor Networks. MTech thesis.
In the last decade, wireless sensor networks deployed at an accelerated pace in military, industrial, healthcare etc. ﬁelds but that were originally developed in the late 1960s and 1970s. Navigation or localization is an intuitive important because it can help in reducing the complexity of energy eﬃcient algorithm, target tracking, routing protocol and data collection/aggregation algorithm in wireless sensor networks (WSNs). Localization has an important role in both network application domains and services; for example geographical routing. Due to self conﬁguring nature of WSNs, it mainly deployed in a hostile environment, and hence it can be easily threatened by internal or external attack. Therefore, localization and security are essential issues in WSNs. We know that ’Wormhole Attack’ is a severe security threat where two malicious colluding sensor nodes create a virtual tunnel to WSNs. Detection and prevention of wormhole attacks in WSNs are a considerably challenging task because of its independence of MAC protocols and immunity to cryptology techniques. Around all the existing defenses have required some additional hardware requirements on the network or strong assumptions; that’s may not have perfect applicability in real environment. Our main objectives are to ﬁnd the location of wormhole attackers as well as the location of sensor nodes in a wireless network system. In our schemes, we consider the three types of nodes : locators, attackers and sensors in the network and makes a conﬂicting set matrix on the basis of abnormal behavior of message exchanging among neighboring locators, which helps in diﬀerentiation between valid locators and dubious locators. We evaluate location estimation results through simulations in our last section.
|Item Type:||Thesis (MTech)|
|Uncontrolled Keywords:||Wireless Sensor Networks; Wormhole Attacks; Localization; Conﬂicting set; Maximum likelihood estimation (MLE)|
|Subjects:||Engineering and Technology > Computer and Information Science > Networks|
|Divisions:||Engineering and Technology > Department of Computer Science|
|Deposited By:||Hemanta Biswal|
|Deposited On:||13 Dec 2013 10:33|
|Last Modified:||13 Dec 2013 10:33|
|Supervisor(s):||Sahoo, M N|
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