Sequential Bargaining Game for Reuse of Radio Resources in D2D Communication in Dedicated Mode

Device-to-device communication (D2D) is expected to accommodate high data rates and to increase the spectral efficiency of mobile networks. We focus on the dedicated mode where D2D pairs exploit channels that are different from the channels allocated to conventional cellular users. Such mode is suitable for scenarios of crowded areas with many D2D pairs where interference management between cellular and D2D users would be very complicated. We propose a novel solution that enables the reuse of multiple channels by multiple D2D pairs in order to increase the throughput of D2D users. The proposed channel reuse is facilitated via grouping D2D pairs into coalitions. The D2D pairs within the same coalition then mutually reuse the channels of each other. The coalitions are defined via sequential bargaining games played among the D2D pairs. The coalitions are created if individual D2D pairs involved in the game benefit from participation in the coalition. The proposed algorithm based on sequential bargaining reaches a throughput gain of 28-64% comparing to the best performing existing algorithm.