Title: Reliability factor-based mathematical model for isolating selfish nodes in MANETs

Authors: J. Sengathir; R. Manoharan

Addresses: Department of Computer Science and Engineering, Pondicherry Engineering College, EC Road, Pillaichavady, Pondicherry – 605014, India ' Department of Computer Science and Engineering, Pondicherry Engineering College, EC Road, Pillaichavady, Pondicherry – 605014, India

Abstract: In MANETs, the performance mainly depends on the cooperation among all the active mobile nodes in the network. Compromising a node to cooperate with all other nodes in the network is a difficult task due to the scarce availability of resources. Hence, mobile nodes could deny the transmission of packets of its neighbour nodes but still forward its own packets. This intentional behaviour of a node is known as selfishness. Our proposed work targets on detecting and isolating the selfishness based on the second hand reputation computed exponentially with the aid of packet deficiency factor (PDEF). The performance of this mathematical model is analysed using ns-2 simulator based on the evaluation parameters determined by varying the number of selfish nodes present in the environment. The results obtained predicts that the proposed model suits better when compared to the existing models available for isolating selfish nodes in an ad hoc environment.

Keywords: reliability factor; packet deficiency factor; PDEF; second hand reputation; AODV; node selfishness; RFBMM; threshold value; mathematical modelling; selfish nodes; MANETs; mobile ad hoc networks; mobile networks.

DOI: 10.1504/IJICT.2014.063223

International Journal of Information and Communication Technology, 2014 Vol.6 No.3/4, pp.403 - 421

Received: 07 Mar 2013
Accepted: 19 Jul 2013
Published online: 26 Jul 2014 *

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