Algorithm and Scheme for D2D Communication in 4G /5G Networks

Device-to-Device (D2D) communication is one of the technology components proposed under Long Term Evolution - Advanced (LTE-A) which reuses the cellular spectrum to increase the spectral efficiency of the network. In this paper, we investigated existing interference management schemes and analyzed the D2D communication in the cellular network. We simulated and developed an algorithm for D2D pairs to efficiently use the unlicensed and licensed spectrum based on the distance between D2D links. We focused on investigating the D2D communication underlaying cellular networks, developed and proposed a novel radio resource allocation algorithm for minimizing the interference and establishing the D2D links using Hungarian minimization/maximization bipartite matching algorithm. We aimed at fair multi-user assignments and restricted multi-user assignments, which allow one cellular user to reuse its resources with two D2D pairs. Then, we further continued our research and proposed a novel radio resource allocation algorithm for interference management for D2D communication in the cellular network using fractional frequency reuse and Hungarian minimization/maximization bipartite matching algorithm. The results of the proposed algorithm shows an outperform the existing algorithm, including our previous proposed algorithm.