基于NPN公专网互通的智慧交通专网方案和关键技术

NPN Public-Private Network Interworking-Based Intelligent Transportation Private Network Solution and Key Technologies

将5G网络部署到交通工具内部可以解决穿透损耗、频移、频繁切换等问题,但又面临着如何与地面5G网络设备传输数据的难题。基于3GPP R16 NPN公专网互通机制,将交通工具内部的独立专网、地面公众网络和交通工具沿线的网络分别映射为SNPN、PLMN、DN,从而提出一种用5G网络回传5G的方案和关键技术,为解决交通工具厢体的信号穿透损耗以及高速移动所带来的传输问题提供了一个新的途径,并对后期向6G演进的可行性进行了初步的说明。研究表明,所提出的方案和技术能够有效解决5G网络回传问题,降低交通工具厢体对信号的衰减,提升5G网络质量,从而有效节省投资。

Deploying 5G networks inside the vehicles can solve the problem caused by high-speed movement and closed compartment, but still faces the challenge of how to transmit data to ground 5G network equipment. Based on the NPN public-private network interworking mechanism in 3 GPP R16, the independent private network inside vehicles, the public ground network and the network along the vehicles can be mapped to SNPN, PLMN and DN, respectively. Therefore, a scheme and its key technologies are proposed to adopt 5G network to backhaul 5G, which provides a new way to solve the signal loss of the vehicle compartment and the transmission issue, and a preliminary description of the feasibility of the later evolution to 6 G is also provided. The research shows that the proposed solutions and technologies can effectively solve the problem of 5G network backhaul, reduce the signal attenuation of the vehicle compartment, improve the 5G network quality, thereby effectively saving investment.