Game Theoretical Mechanism Design for Cognitive Radio Networks With Selfish Users

Dynamic spectrum access with cognitive radios has become a promising approach to improve spectrum efficiency by adaptively coordinating different users' access according to spectrum dynamics. However, selfish users competing with each other for spectrum may exchange false private information or collude with others, in order to get more access to the spectrum and achieve higher profits. In this paper, the authors investigate two game-theoretical mechanism design methods to suppress cheating and collusion behavior of selfish users: a self-enforcing truth-telling mechanism for unlicensed spectrum sharing, and a collusion-resistant multi-stage dynamic spectrum pricing game for licensed spectrum sharing.