智能高铁铁路枢纽场景5G-R信道与传播特性分析

Analysis of 5G-R channel and propagation characteristics for smart high-speed railway hub scenario

为构建现代综合交通运输体系,支撑我国高速铁路向智能化方向发展,基于第五代移动通信技术(5G)的铁路5G专用移动通信(5G-R)系统将成为铁路智能联接的首选。2.1 GHz频段有望承载5G-R系统,支持铁路产业不断涌现的新业务。高速铁路枢纽场景是列车行车指挥和客货调度的中枢,具有业务量大、业务类型复杂等特点,对铁路通信系统提出了更高的要求。本文以厦门北站铁路枢纽为研究场景,基于电子地图建立三维场景模型,采用射线跟踪方法,仿真并分析场景的信道与传播特性,并提出了通信系统设计的相关建议。本文的研究结果将有助于为铁路枢纽场景5G-R系统设计与优化提供参考,提高铁路枢纽场景无线覆盖质量。

In order to build the modern integrated transport system and support the development of China's high-speed railways towards intelligence,based on the fifth-generation mobile communication technology(5G),the 5G for railways(5G-R)system will become the preferred choice for intelligent rail connectivity.The 2.1 GHz band is expected to host the 5G-R system to support new services that are emerging in the railway industry.The high-speed railway hub scenario with a large volume of complex types of services is the center for train operation command and the dispatching of passengers and the cargo.Thus,it places higher demands on the railway communication system.In this paper,the railway hub of Xiamen North Station is taken as the research scenario.A 3D model is built based on the electronic map.The Ray-Tracing(RT)method is adopted to simulate and analyze the channel and propagation characteristics of the scenario.Relevant suggestions are proposed for the design of the communication system.The results of this paper will help to provide a reference for the design and optimization of 5G-R systems for railway hub scenarios,and improve the quality of wireless coverage in railway hub scenarios.