Detecting backoff misbehaviour in IEEE 802.11 EDCA

In this paper, we suggest the use of the chi-square test for detecting backoff misbehaviour in IEEE 802.11 EDCA networks. A performance evaluation is performed to compare the chi-square test with two other methods, known in the literature. To perform a suitable comparison, these two methods are extended to support EDCA and the BEB mechanism. We assume a misbehaviour model, which can be easily executed by a selfish user. We show that the chi-square test outperforms the other methods in terms of the probability of misbehaviour detection and time required to positively identify a misbehaving node. Copyright © 2010 John Wiley & Sons, Ltd. *Correspondence S. Szott, Department of Telecommunications, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland. E-mail: [email protected] Received 14 July 2009; Revised 8 July 2010; Accepted 5 October 2010