Performance Evaluation of 5G NR Traffic Offloading onto WiFi Direct

With the fifth-generation (5G) of mobile network, users can enjoy wide coverage, multiple connections, and low-latency network access. However, the path loss and penetration loss of high frequency signal are serious in free space, especially in indoor scenario, resulting in communication blind districts. In this paper, to improve the transmission performance of the edge nodes, a multi-hop transmission scheme combining 5G and WiFi Direct is proposed. In addition, a 5G+ WiFi device- to-device (D2D) system-level simulation platform is built to test the performance of the scheme. Based on the current networking algorithm, the simulation results show that the scheme can effectively improve the throughput and reduce the packet loss rate of edge nodes. In addition, the number of routing hops and new radio (NR) signal threshold will affect the transmission performance of the node.