Design of UAV video and control signal real-time transmission system based on 5G network

In order to ensure the long-distance, low-delay and high-rate reliable transmission of civil UAV video signals and control signals, and solve practical application problems, this paper studies and designs a real-time transmission system for UAV video signals and control signals based on 5G network. The onboard computer uses Nvidia Jetson Nano, and the 5G module uses Huawei MH5000 module. In addition, the H.265 encoding method is improved for the characteristics of UAV video, and the MAVLink protocol is used as the control signal transmission protocol. The system has the characteristics of wide application range, high reliability and low delay. At the same time, a physical platform was set up to conduct experiments. After a large number of repeated experiments, the end-to-end transmission delay of the video signal was measured to be 1.2s, the transmission rate was 97Mb/s, and the control signal response delay was 30ms. This performance fully meets the application requirements of civilian UAVs.