Bipartite Matching Mechanism for Fractional Frequency Reuse-Based D2D Multicast Communications

With the rise of new radio technologies, resource sharing mechanism has become a promising technique to achieve better system performance. Recently, the Fractional frequency reuse (FFR) method has gained more popularity to mitigate intra-cell interference generated by device-to-device (D2D) multicast communications into the traditional cellular networks. In this paper, we propose a weighted bipartite matching mechanism to accommodate the user's satisfaction. Then, we formulate an optimization problem to maximize system throughput and satisfaction rate while guaranteeing the quality of service (QoS) of both cellular users and D2D multicast users. Simulation results show that the optimal system throughput is obtained by the proposed scheme and D2D multicast communication shows its effectiveness in maximizing overall system throughput, resource allocation satisfaction rate and spectrum efficiency.