Interference Minimization for Uplink Channel Reusing in Device-to-Device Communication Underlaying Cellular Networks

Device-to-Device (D2D) communication as an underlay to cellular networks is a promising paradigm to help complement the Next Generation Networks (NGNs). D2D communication leverages the physical proximity of users by allowing direct communication between these proximate users, with improved system throughput, higher power efficiency and increased traffic offload in the core network. Despite the lofty benefits aligned with D2D communications, interference management is one of the major concerns. Hence, this paper studies the challenges of interference in cellular networks underlaid by D2D users. We propose a heuristic channel allocation algorithm that ensures fairness to cellular users when D2D pairs are sharing their channels, as well as minimizing interference and improving the number of permitted D2D pairs. Performance of the heuristic algorithm is compared with a proposed optimal algorithm. The simulation results show that the proposed heuristic method has a close performance to the optimal algorithm.