Joint Admission Control and Resource Allocation for D2D Communications with QoS Constraints

The use of Device-to-Device (D2D) communications underlaying a cellular network is an efficient way to improve cell capacity and resource utilization. When the D2D links are allowed to share the same physical resources with traditional cellular links, efficient admission control (AC) and radio resource allocation (RRA) strategies play a key-role to control the co-channel interference and to provide QoS support. In this paper, we propose a novel joint AC and RRA strategy that provides QoS support in the long-term to cellular and D2D communications. The AC algorithm derives the best set of cellular and D2D links in order to maximize the total revenue under QoS and resource constraints. Then, given the set of admitted links, the low-complexity short-term RRA maximizes the average weighted sum-rate under QoS constraints. Numerical results show that the proposed strategy increases the number of satisfied communication links up to 50 %, compared to other state-of-the- art frameworks.

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