Cheat-Proof Traffic-Aware Dynamic Spectrum Access

Traffic-aware dynamic spectrum access (TDSA), in which demand-driven spectrum allocation is employed with the aid of cognitive radios, can improve the performance of the wireless network with increasing and dynamic user demands. However, selfish behaviors of participants, such as cheating and deviation for more spectrum, can decrease the efficiency of TDSA a lot. In this paper, with the help of game theory, we settle cheating problem in FLEX with two cheat-proof approaches in repeated game. The new TDSA solution can make the selfish but not malicious participants in FLEX self-enforced to cooperate incentively and honestly. Moreover, this method can also be applied to demand-driven spectrum allocation rules other than FLEX. Simulations show that our scheme can prevent cheating in FLEX well, and greatly improve the spectrum efficiency.