Research on Key Communication Technologies of Intelligent HSR Based on LEO Satellite Networks

被引：0

作者：

Zhang, Jiachi ^{[1
]}

Liu, Liu ^{[2
]}

Zhou, Tao ^{[2
]}

Lin, Wei ^{[3
]}

Liang, Yiqun ^{[3
]}

机构：

[1] Department of Police Information, Shandong Police College, Jinan

[2] School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing

[3] Signal & Communication Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing

来源：

Tiedao Xuebao/Journal of the China Railway Society | 2024年 / 46卷 / 08期

关键词：

beam switching; Doppler frequency offset; intelligent high-speed railway; low-earth-orbit (LEO) satellite network; low-latency transmission; wireless access;

D O I：

10.3969/j.issn.1001-8360.2024.08.008

中图分类号：

学科分类号：

摘要：

The intelligent high-speed railway (HSR) is a pivotal part in the construction of a modern comprehensive transportation system. Establishing communication links with high-speed supportability, high-data-rate, high-reliability, and high-real-time is the cornerstone of safe train operations. In light of the typical challenges of large spatial span, high cost of trackside communication equipment, and frequent handovers for HSRs, this paper explored the feasibility and key technologies of train-ground communication based on the low-earth-orbit (LEO) satellite Internet system. Specifically, an analysis was given on the requirements of communication services for intelligent HSRs and the use of private or public networks to transfer the corresponding services. The paper further studied the public LEO satellite network-based HSR wireless access architecture. On this basis, 3 key technologies including satellite access and low-latency transmission, Doppler frequency offset of satellite-ground link, and intra-satellite/inter-satellite beam switching were further investigated, which aims to achieve low-latency and highly reliable satellite-to-ground communication links. © 2024 Science Press. All rights reserved.

引用

页码：69 / 77

页数：8

共 25 条

[1]

WANG Tongjun, Connotation, Architecture and Implementation Path of China Intelligent Highspeed Railway 2.0, Railway Computer Application, 31, 7, pp. 1-9, (2022)

[2]

ZHENG Tuo, Research on Development of China's Highspeed Railway and Economy, Journal of the China Railway Society, 42, 7, pp. 34-41, (2020)

[3]

AI Bo, MA Guoyu, ZHONG Zhangdui, 5G Technologies and Applications in High-speed Railway, 25, 6, pp. 42-47, (2019)

[4]

Notice of China National Railway Group on Issuing the Outline of Railway Advance Planning for a Strong Transportation Country in the New Era

[5]

LI Xinping, The Construction of the Changjiu High-speed Railway Has Been Steadily Promoted, People's Daily, 18

[6]

CHEN Shanzhi, Analysis of LEO Satellite Communication and Suggestions for Its Development Strategy in China, Telecommunications Science, 36, 6, pp. 1-13, (2020)

[7]

The Story of Eutelsat OneWeb [EB/OL]

[8]

Live Starlink Satellite and Coverage Map [EB/OL]

[9]

CELIKBILEK K, SALEEM Z, MORALES FERRE R, Et al., Survey on Optimization Methods for LEO-satellite-based Networks with Applications in Future Autonomous Transportation, Sensors, 22, 4, pp. 1421-1472, (2022)

[10]

DARWISH T, KURT G K, YANIKOMEROGLU H, Et al., LEO Satellites in 5G and Beyond Networks: a Review from a Standardization Perspective, IEEE Access, 10, pp. 35040-35060, (2022)

← 1 2 3 →