Selfish MAC layer misbehavior detection model for the IEEE 802.11-based wireless mesh networks

Abstract

CSMA/CA, the contention mechanism of the IEEE 802.11 DCF medium access protocol, has recently been found vulnerable to selfish attacks. Such attacks can greatly increase a selfish station's bandwidth share at the expense of honest stations. Based on the in-depth research of the attack model of selfish behavior in WMN, the attack strategy of smart selfish nodes was focused, analyzed and according to its characteristics, a double-mode detection mechanism was proposed. The one mode is selfish attack detection to sequential data; the other is attack detection to non-sequential data transmission ground on statistics. Subsequently the selfish behavior detection model was proposed with the double-mode detection mechanism, which was finally simulated in ns-2. The simulation results indicated that the new selfish behavior detection model which used the double-mode detection mechanism is preferably adapt to the selfish attack behavior and can commendably solve the problem of smart selfish nodes in WMN. © Springer-Verlag Berlin Heidelberg 2007.