基于GNSS邻域相似性的5G基站纳秒级时间同步技术研究

刘文学; 陈诗军; 葛建; 袁洪; 龚翠玲

doi:10.11959/j.issn.1000-436x.2020024

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基于GNSS邻域相似性的5G基站纳秒级时间同步技术研究

学术通信 | 更新时间：2024-06-05

- 基于GNSS邻域相似性的5G基站纳秒级时间同步技术研究
- Research on nanosecond time synchronization technology for 5G base station based on GNSS neighborhood similarity
- 通信学报 2020年41卷第1期页码：180-190
- 作者机构：
  
  1. 中国科学院光电研究院，北京 100094
  2. 中国科学院大学电子电气与通信工程学院，北京 100049
  3. 中兴通讯股份有限公司，广东深圳 518055
- 作者简介：
  
  [ "刘文学（1985- ），男，陕西渭南人，中国科学院大学博士生，主要研究方向为卫星导航信号与信息处理、GNSS高精度授时与时间频率同步等" ]
  [ "陈诗军（1972- ），男，山东威海人，中兴通讯股份有限公司教授级高级工程师，主要研究方向为高精度定位网技术、高精度信号测量技术、CoMP技术、MIMO技术、无线信道模拟技术、定位技术标准化等" ]
  [ "葛建（1971- ），男，北京人，博士，中国科学院高级工程师，主要研究方向为卫星导航接收机、卫星导航信号体制和高精度时间频率同步" ]
  [ "袁洪（1968- ），男，陕西西安人，博士，中国科学院研究员、博士生导师，主要研究方向为电离层电波传播、GPS、北斗卫星导航系统建设、载人航天应用系统、电离层物理和电离层探测等" ]
  [ "龚翠玲（1981- ），女，广东广州人，中兴通讯股份有限公司硬件工程师，主要研究方向为基站时钟同步技术、高精度时钟同步技术等" ]
- 基金信息：
  
  北京市科委新一代信息通信技术专项基金资助项目(Z181100003218009);中国科学院光电研究院创新基金资助项目(Y70B12A1BY);国家高技术研究发展计划（“863”计划）基金资助项目(2015AA124101);国家重大科技专项基金资助项目(2016ZX03001023)
- DOI：10.11959/j.issn.1000-436x.2020024
  中图分类号： TN915.1
- 网络出版日期：2020-01，
  
  纸质出版日期：2020-01-25
- 稿件说明：
移动端阅览
刘文学, 陈诗军, 葛建, 等. 基于GNSS邻域相似性的5G基站纳秒级时间同步技术研究[J]. 通信学报, 2020,41(1):180-190.

Wenxue LIU, Shijun CHEN, Jian GE, et al. Research on nanosecond time synchronization technology for 5G base station based on GNSS neighborhood similarity[J]. Journal on communications, 2020, 41(1): 180-190.
刘文学, 陈诗军, 葛建, 等. 基于GNSS邻域相似性的5G基站纳秒级时间同步技术研究[J]. 通信学报, 2020,41(1):180-190. DOI： 10.11959/j.issn.1000-436x.2020024.

Wenxue LIU, Shijun CHEN, Jian GE, et al. Research on nanosecond time synchronization technology for 5G base station based on GNSS neighborhood similarity[J]. Journal on communications, 2020, 41(1): 180-190. DOI： 10.11959/j.issn.1000-436x.2020024.

摘要

针对3GPP制定的LTE-A/5G业务中的高精度定位需求，突破现有全球卫星导航系统（GNSS）接收机百纳秒定时精度，研究基于GNSS的5G基站纳秒级高精度时间同步技术。分析GNSS误差邻域相似性特点，结合5G基站时间同步需求特点，提出基于GNSS邻域相似性的5G基站纳秒级精度时间同步理论与接收机相关算法，并研究该时间同步方法在区域和广域条件下的具体特征。仿真和实测结果表明，与现有百纳秒级基站时间同步精度相比，该技术方法可以实现任意区域基站3 ns以内的超高精度时间同步，支持5G基站米级高精度定位等高级增量业务开展。

Abstract

For precision positioning requirements in the LTE-A/5G service developed by the 3GPP

the nanosecond precision time synchronization technology based on global navigation satellite system (GNSS) for 5G base station was studied which broke through the current GNSS receiver’s hundred nanosecond timing accuracy.By analyzing the characteristics of neighborhood similarity of GNSS errors and combining the characteristics of time synchronization requirements of 5G base stations

a nanosecond precision time synchronization theory and related receiver algorithms for 5G base stations was proposed which based on the principle of neighborhood similarity of GNSS signals.The specific characteristics of the time synchronization technology under regional and wide-area conditions were studied.The simulation and experimental results show that compared with the current time synchronization accuracy within hundred nanosecond rang of base stations

the proposed method can achieve precision time synchronization within 3 ns between the regional base stations

and support 5G base station meter-level precision location based service(LBS) and other advanced incremental services.

关键词

Keywords

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