Research on nanosecond time synchronization technology for 5G base station based on GNSS neighborhood similarity

Wenxue LIU; Shijun CHEN; Jian GE; Hong YUAN; Cuiling GONG

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

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Research on nanosecond time synchronization technology for 5G base station based on GNSS neighborhood similarity

Correspondences | 更新时间：2024-06-05

- Research on nanosecond time synchronization technology for 5G base station based on GNSS neighborhood similarity
- Journal on Communications Vol. 41, Issue 1, Pages: 180-190(2020)
- 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：
- 基金信息：
  
  Beijing Municipal Science ＆ Technology Commission 5G Special Project(Z181100003218009);Innovation Project of Institute of Optics,Chinese Academy of Sciences(Y70B12A1BY);The National High Technology Research and Development Program of China (863 Program)(2015AA124101);The National Science and Technology Major Project of China(2016ZX03001023)
- DOI：10.11959/j.issn.1000-436x.2020024
  CLC： TN915.1
- Online First：2020-01，
  
  Published：25 January 2020
- 稿件说明：
移动端阅览
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：

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

references

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