INVALIDATING VULNERABLE BROADCASTER NODES USING MAXIMUM LIKELIHOOD EXPECTATION

Jeril Kuriakose, Amruth V, Swathy Nandhini N, Iyer Snehal Gopalakrishnan, Cyril Kuriakose

Abstract: Discovering the cheating or vulnerable anchor node (or broadcaster node) is an essential problem in wireless sensor networks (WSNs). In wireless sensor networks, anchor nodes are the nodes that know its current location. Neighboring nodes or non-anchor nodes calculate its location (or its location reference) with the help of anchor nodes. Ingenuous localization is not possible in the presence of a cheating anchor node or a cheating node. Nowadays, it’s a challenging task to identify the cheating anchor node or cheating node in a network. Even after finding out the location of the cheating anchor node, there is no assurance, that the identified node is legitimate or not. This paper aims to localize the cheating anchor nodes using trilateration algorithm and later associate it with maximum likelihood expectation technique (MLE) to obtain maximum accuracy in localization. We were able to attain a considerable reduction in the error achieved during localization. For implementation purpose we simulated our scheme using ns-3 network simulator

Keywords: Maximum likelihood expectation; trilateration; anchor node; security; distance-based localization; wireless sensor networks;

DOI: https://doi.org/10.15623/ijret.2014.0319025