Resource allocation in D2D communication - A game theoretic approach

D2D communication has been proposed as a transmission approach to improve the resource efficiency and lighten the heavy load of the base station(BS) in LTE-Advanced system. In D2D communication, resource efficiency is seriously influenced by the resource allocation scheme. Additionally, the selfish behaviors of user equipment(UE), such as Unknown Channel Quality(UCQ) Problem potentially harm the system efficiency. For instance, we observed that UEs may report their experienced D2D quality untruthfully in order to gain unfair advantages in resource allocation. The so-called UCQ issue imposes a negative impact on the resource utilization efficiency. In this paper, we propose to use Game Theory to analyze this issue. First, we studied the resource allocating scheme concerning the benefit of the BS, and then analyze the system efficiency and the equilibrium. Second, we discussed the UCQ problem in D2D communication. We proposed a contract-based mechanism to resolve the UCQ problem by eliminating the incentive of UEs to report untruthfully with designed service contracts. The simulation results represents the feasibility and the effectiveness of our approach.