Efficient Resource Allocation and Power Control for D2D Communication with RAN Sharing

Device-to-device (D2D) communication improves the performance and flexibility of mobile networks. It enables direct communication between two user equipments (UEs) without the relay via a base station (BS). D2D pairs can share the spectrum resources given to cellular UEs, but doing so causes interference. Thus, how to manage resources and transmitted power for UEs is important. This paper proposes a D2D resource allocation and power control with RAN sharing (DACS) framework, where some service providers (SPs) each possess a part of the BS’s resources. Each SP allots its resources to UEs and decides power to satisfy UEs’ SINR demands while reducing interference. SPs can borrow resources from each other for serving more UEs. Then, DACS amplifies the power of senders adaptively to better signal quality. Simulation results reveal that DACS can achieve a high service rate, increase energy efficiency, and keep fairness among SPs.