Resilient Tit-For-Tat (RTFT) A game solution for wireless misbehaviour

The vulnerability of wireless networks to selfish and misbehaving nodes is a well known problem. The Tit-For-Tat (TFT) strategy has been proposed as a game theoretic solution to the problem, however the TFT suffers from a deadlock vulnerability. We present a modified TFT algorithm, the Resilient Tit-For-Tat (RTFT) algorithm in which we introduce the concept of alternative strategies to complement the default strategy. This combination enables us to model a non-cooperative game in which nodes are able change their strategies in order to maximize their utilities in selfish and misbehaviour scenarios. We demonstrate the viability of our proposal with simulation results.