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基于5G NR的智能铁路定位技术研究

李辉, 方荣一, 于哲, 任斌, 孙韶辉

李辉, 方荣一, 于哲, 任斌, 孙韶辉. 基于5G NR的智能铁路定位技术研究[J]. 铁路计算机应用, 2022, 31(8): 27-33. DOI: 10.3969/j.issn.1005-8451.2022.08.06
引用本文: 李辉, 方荣一, 于哲, 任斌, 孙韶辉. 基于5G NR的智能铁路定位技术研究[J]. 铁路计算机应用, 2022, 31(8): 27-33. DOI: 10.3969/j.issn.1005-8451.2022.08.06
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LI Hui, FANG Rongyi, YU Zhe, REN Bin, SUN Shaohui. 5G NR based positioning system for intelligent railway[J]. Railway Computer Application, 2022, 31(8): 27-33. DOI: 10.3969/j.issn.1005-8451.2022.08.06
Citation: LI Hui, FANG Rongyi, YU Zhe, REN Bin, SUN Shaohui. 5G NR based positioning system for intelligent railway[J]. Railway Computer Application, 2022, 31(8): 27-33. DOI: 10.3969/j.issn.1005-8451.2022.08.06
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基于5G NR的智能铁路定位技术研究

  • 1.

    中信科移动通信技术股份有限公司　创新中心，北京　100083

  • 2.

    电信科学技术研究院有限公司　无线移动通信国家重点实验室，北京　100083

  • 3.

    电信科学技术研究院有限公司　新一代移动通信无线网络与芯片技术国家工程实验室，北京　100083

详细信息
    作者简介:

    李　辉，副研究员

    方荣一，工程师

  • 中图分类号: U285.2 : TP39

5G NR based positioning system for intelligent railway

  • 1.

    Innovation Center, CICT Mobile Communications Technology Co. LTD., Beijing　100083, China

  • 2.

    State Key Laboratory of Wireless Mobile Communications, China Academy of Telecommunications Technology (CATT) Co. Ltd., Beijing　100083, China

  • 3.

    National Engineering Laboratory for New Generation Mobile Communication Network and Chip Technology, China Academy of Telecommunications Technology (CATT) Co. Ltd., Beijing　100083, China

摘要

    摘要
  • 摘要: 为提高列车和人员的定位精度，针对智能铁路高速和低速场景下的定位需求，结合基于正交频分复用技术的全新空口设计的全球性第5代移动通信技术标准（简称：5G 新空口）（5G NR）定位技术，提出基于5G NR的上行和下行定位解决方案。基于到达时间差的定位技术原理，通过选用下行到达时间差（DL-TDOA，Downlink Time Difference of Arrival）定位法和上行到达时间差（UL-TDOA，Uplink Time Difference of Arrival）定位法，设计了上下行定位参考信号、时间测量值反馈及定位流程，保证了智能铁路低速场景下满足第3代合作伙伴计划技术报告（3GPP TR）所定义的米级定位精度，并提出了高速场景及隧道场景下的潜在定位增强技术，为智能铁路多场景定位提供技术参考。
    Abstract: In order to improve the positioning accuracy of railway trains and personnel, aiming at the positioning requirements of intelligent railways in high-speed and low-speed scenarios, and combining with the positioning technology of the 5G NR, this paper proposed the uplink and downlink positioning solutions based on 5G NR. Based on the positioning technology principle of time difference of arrival, the paper selected the downlink arrival time difference positioning method (DL-TDOA) and uplink arrival time difference positioning method (UL-TDOA) to design the uplink and downlink positioning reference signal, time measurement feedback and positioning process, ensured that the intelligent railway meets the meter level positioning accuracy defined in the technical report of the third generation partnership project (3GPP TR) under the low-speed scenario, and proposed the potential positioning enhancement technology under the high-speed scenario and the tunnel scenario. It can provide technical reference for the multi scene positioning of the intelligent railway.
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  • 图  1   高速铁路定位部署场景

    下载: 全尺寸图片 幻灯片

    图  2   二维情形中的TDOA定位原理

    下载: 全尺寸图片 幻灯片

    图  3   符号个数为6、梳齿取值为6的PRS图样

    下载: 全尺寸图片 幻灯片

    图  4   智能铁路场景下的下行定位流程

    下载: 全尺寸图片 幻灯片

    图  5   符号个数为12、梳齿取值为8的SRS-Pos图样

    下载: 全尺寸图片 幻灯片

    图  6   智能铁路场景下的上行定位流程

    下载: 全尺寸图片 幻灯片

    图  7   基于5G信号的载波相位定位流程

    下载: 全尺寸图片 幻灯片

    表  1   高速铁路场景定位精度要求

    列车速度/km·h-1纵向定位精度/m横向定位精度/m
    0～40≤11～3
    40～120≤341～3
    120～160≤451～3
    160～320≤891～3
    320～500≤2001～3
    下载: 导出CSV
    • 参考文献(13)
  • [1] 佟 哲. 5G通信技术在货运站场自动驾驶中的应用 [J]. 铁路通信信号工程技术,2021,18(12):67-71. DOI: 10.3969/j.issn.1673-4440.2021.12.013
    [2] 马 龙. 全自动运行系统试车线共享车辆段室内信号设备方案 [J]. 铁路通信信号工程技术,2021,18(12):95-102. DOI: 10.3969/j.issn.1673-4440.2021.12.018
    [3] 谢和欢. 基于5G技术的新一代列控通信系统研究 [J]. 铁路通信信号工程技术,2021,18(12):38-45. DOI: 10.3969/j.issn.1673-4440.2021.12.008
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    Intel Corporation, CATT. Revised WID on NR Positioning Enhancements [R]. 3GPP TSG RAN Meeting #91e, RP-210903, 2021.
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    Association of Radio Industries and Businesses (ARIB). Study on Future Railway Mobile Communication System 3GPP Technical Report 22.889 V17.4. 0[S]. Tokyo, Japan: Association of Radio Industries and Businesses (ARIB), 2021.
    [8]

    Association of Radio Industries and Businesses (ARIB). Study on Scenarios and Requirements for Next Generation Access Technologies 3GPP Technical Report 38.913, 2021, V17.4. 0[S]. Tokyo, Japan: Association of Radio Industries and Businesses (ARIB), 2021.
    [9]

    Xu W, Huang M, Zhu C, et al. Maximum likelihood TOA and OTDOA estimation with first arriving path detection for 3GPP LTE system [J]. Transactions on Emerging Telecommunications Technologies, 2016, 27(3): 339-356. DOI: 10.1002/ett.2871
    [10]

    Association of Radio Industries and Businesses (ARIB). Physical layer measurements (Release 16) 3GPP Technical Specification 38.215 V16.4. 0 [S].Tokyo, Japan:Association of Radio Industries and Businesses(ARIB), 2020.
    [11]

    Association of Radio Industries and Businesses (ARIB). Stage 2 functional specification of User Equipment (UE) positioning in NG-RAN (Release 16) 3GPP Technical Specification 38.305 V16.3. 0[S].Tokyo, Japan: Association of Radio Industries and Businesses (ARIB), 2020.
    [12] 秦 永,邬 赟,魏朝平,等. 基于时差和多普勒频率的双发单收目标定位系统性能分析 [J]. 南昌工程学院学报,2021,40(3):6.
    [13]

    Intel Corporation, CATT, Ericsson. Revised SID on Study on expanded and improved NR positioning [R]. 3GPP TSG RAN Meeting #94e, RP-213588, 2021.
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出版历程
  • 收稿日期:  2022-01-28
  • 刊出日期:  2022-08-24

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