Key technologies and evolution of 5G non-terrestrial network

Deshan MIAO; Li CHAI; Jiancheng SUN; Ting KE; Yuzhen LIU; Xiaodong XU; Nan HU; Shanzhi CHEN

doi:10.11959/j.issn.1000-0801.2022056

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Key technologies and evolution of 5G non-terrestrial network

Topic: 5G-Advanced | 更新时间：2024-06-05

- Key technologies and evolution of 5G non-terrestrial network
- Telecommunications Science Vol. 38, Issue 3, Pages: 10-21(2022)
- 作者机构：
  
  1. 中信科移动通信技术股份有限公司，北京 100083
  2. 无线移动通信国家重点实验室（电信科学技术研究院有限公司），北京 100191
  3. 中国移动通信有限公司研究院，北京 100053
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2022056
  CLC： TP393
- Published Online：2022-03，
  
  Published：20 March 2022
- 稿件说明：
移动端阅览
Deshan MIAO, Li CHAI, Jiancheng SUN, et al. Key technologies and evolution of 5G non-terrestrial network[J]. Telecommunications science, 2022, 38(3): 10-21.
DOI：

Deshan MIAO, Li CHAI, Jiancheng SUN, et al. Key technologies and evolution of 5G non-terrestrial network[J]. Telecommunications science, 2022, 38(3): 10-21. DOI： 10.11959/j.issn.1000-0801.2022056.

摘要

5G非地面网络（non-terrestrial network，NTN）技术是5G通信系统面向卫星通信和低空通信等新应用场景的重要技术，标志着5G技术应用从陆地通信走向了空间通信。首先分析了5G NTN和地面5G的差异点，包括网络架构、时频同步、HARQ和移动性管理等。进而介绍了3GPP Release 17的5G NTN标准进展及关键技术点与3GPP Release 18 的5G NTN增强技术。最后展望了未来空、天、地一体化的技术演进。通过对5G NTN技术研究和标准分析，明确了5G和卫星通信融合的技术路线，并为后续6G空、天、地融合系统研究和设计提供基础。

Abstract

Non-terrestrial network (NTN) in 5G system is expected to provide communication services via near-earth space access and satellite access

which means 5G network has expanded its service area from land to space.Standardization status and key technolgies of 5G 3GPP Release 17 NTN were presented

including key differences compared 5G TN

especially in network architecture

time and frequency synchronization

HARQ

and mobility management etc.Moreover

the main candidate techniques in 3GPP Release 18 NTN and beyond were explored

aiming to outline a vision for NTN evolution.Based on the analysis of 5G NTN and its evolution

it was observed that the integration of TN and NTN would be an obvious technique trend

which paved a way to a unified system applied for space

land and sea.

关键词

Keywords

references

陈山枝 . 关于低轨卫星通信的分析及我国的发展建议 [J ] . 电信科学 , 2020 , 36 ( 6 ): 1 - 13 .

CHEN SZ . Analysis of LEO satellite communication and suggestions for its development strategy in China [J ] . Telecommunications Science , 2020 , 36 ( 6 ): 1 - 13 .

3GPP . Study on new radio (NR) to support non-terrestrial networks:TR 38.811 v15.0.0 [R ] . 2018 .

3GPP . Solutions for NR to support non-terrestrial networks (NTN):TR 38.821 v16.0.0 [R ] . 2019 .

CATT . UL time and frequency compensation for NTN:R1-2007855 [R ] . 2020 .

THALES . Considerations on UL timing and frequency synchronization:R1-2009298 [R ] . 2020 .

MediaTek , Eutelsat . UL time and frequency synchronisation for NR-NTN:R1-2008809 [R ] . 2020 .

Ericsson . On basic assumptions and timing relationship enhancements for NTN:R1-2006464 [R ] . 2020 .

CMCC . Enhancements on HARQ for NTN:R1-2008012 [R ] . 2020 .

CMCC . Discussion on service continuity between NTN and TN:R2-2103702 [R ] . 2021 .

CMCC . Report of[AT115-e][112][NTN]SMTC and gaps:R2-2109135 [R ] . 2021 .

CATT . Views on the Objectives of 3GPP Rel-18 NR NTN WID:RP-213302 [R ] . 2021 .

Qualcomm . Views on NTN evolution:RP-211943 [R ] . 2021 .

RAN vice-chair (AT＆T),Thales . New WI:NR NTN (non-terrestrial networks) enhancements:RP-213690 [R ] . 2021 .

CHEN S Z , LIANG Y C , SUN S H , et al . Vision,requirements,and technology trend of 6G:how to tackle the challenges of system coverage,capacity,user data-rate and movement speed [J ] . IEEE Wireless Communications , 2020 , 27 ( 2 ): 218 - 228 .

CHEN S Z , SUN S H , KANG S L . System integration of terrestrial mobile communication and satellite communication—the trends,challenges and key technologies in B5G and 6G [J ] . China Communications , 2020 , 17 ( 12 ): 156 - 171 .

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