高铁场景下5G-R大尺度衰落特性研究
PDF下载 (155)宋宗莹,袁张付,苏 璇,王兴中,王国英,王 凯,苏昭阳,刘 留.高铁场景下5G-R大尺度衰落特性研究[J].宁波大学学报(理工版),2025,38(4):40-48.DOI:10.20098/j.cnki.1001-5132.2024.1207
SONG Zongying,YUAN Zhangfu,SU Xuan,WANG Xingzhong,WANG Guoying,Wang Kai,Su Zhaoyang,Liu Liu.Research on large scale fading characteristics of 5G-R in high-speed rail scenarios[J].Journal of Ningbo University(Natural Science & Engineering Edition),2025,38(4):40-48.DOI:10.20098/j.cnki.1001-5132.2024.1207
| Title: | Research on large scale fading characteristics of 5G-R in high-speed rail scenarios |
| 作者: | 宋宗莹, 袁张付, 苏 璇, 王兴中, 王国英, 王 凯, 苏昭阳, 刘 留 |
| Author(s): | SONG Zongying, YUAN Zhangfu, SU Xuan, WANG Xingzhong, WANG Guoying, Wang Kai, Su Zhaoyang, Liu Liu |
| 关键词: | 高速铁路; 无线信道; 信道建模; 大尺度衰落; 路径损耗 |
| Keywords: | 5G-R; high-speed rail; wireless channel; channel modeling; large scale fading; path loss |
| 分类号: | TN929.5 |
| DOI: | 10.20098/j.cnki.1001-5132.2024.1207 |
| 文献标识码: | A |
| 摘要: | 当前我国铁路通信系统正在从传统GSM-R迈向5G-R网络制式，高铁环境下的无线信道特性研究是高铁通信系统设计的基础，尤其是大尺度衰落的预测对轨旁基站的部署起着至关重要的作用。首先分析了高铁环境下的通信特点，总结了3种常见的高铁运行场景，即高架桥、路堑、隧道。在此基础上，进一步分析了目前已有的轨道交通制式及其相应的工作频段。随后分析了目前基于实测以及多种标准下的大尺度衰落模型，并研究了典型高铁场景（高架桥以及路堑）下GSM-R与5G-R频段下的大尺度衰落特性。仿真结果表明，5G-R频段下路径损耗更高，这对于优化5G-R基站部署有着重要意义。 |
| Abstract: | Currently, the railway communication system in China is transitioning from traditional GSM-R to 5G-R network standards. The study of wireless channel characteristics in high-speed rail environments lays the foundation for high-speed rail communication system design, especially for the prediction of large-scale fading, which plays a crucial role in the deployment of trackside base stations. This paper first analyzes the characteristics of communication in high-speed rail environments and summarizes three common high-speed rail operation scenarios, namely viaduct, cutting, and tunnel. On this basis, further analysis is conducted on the existing railway communication systems and their corresponding operating frequency bands. Subsequently, the current large-scale fading models are analyzed, including those based on actual measurements and those with various standards. Based on these, the research on large-scale fading characteristics of GSM-R and 5G-R frequency bands in typical high-speed rail scenarios (viaduct and cutting) are eventually conducted. The simulation results show that there exists higher path loss in the 5G-R frequency band, which is of great significance for optimizing the deployment of 5G-R base stations. |
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| 备注/Memo: | 收稿日期：2024−12−17 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ 基金项目：中国神华能源公司科研项目（GJNY-22-7/2300-K1220053） 第一作者：宋宗莹，正高级工程师，主要研究方向为智慧铁路。E-mail: 10000322@ceic.com *通信作者：王国英，高级工程师，主要研究方向为铁路信号。E-mail: wangguoying@crscd.com.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
