Research of D2D Communications Mode for 5G Vehicular Networks

Aiming at the poor operational reliability and high latency in the communication links of vehicular networks, this paper proposes a resource allocation algorithm, which gives priority to quality of service and is suitable for wireless transmission of short distance traffic information. By the proposed algorithm, 5G device-to-device (D2D) communications adopt a small antenna mounted in the car for sending the base station signal to the place that needs signal coverage, to effectively reduce and eliminate signal blind spots, after that suppress the interference of the same frequency signal to guarantee the network quality. The simulation results show that the proposed algorithm can effectively improve the throughput of the system, outperform the stochastic resource allocation algorithm. It implements the mode switch and gets a better experience for D2D users.