Key solutions and standardization progress for transmission enhancement in Rel-19 NR NTN

SUN Yi; LIANG Mengwei; TONG Jianfei; ZHANG Yueyue; YAN Hong; WANG Wenjin

doi:10.11959/j.issn.1000-0801.2025175

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Key solutions and standardization progress for transmission enhancement in Rel-19 NR NTN

Communication Standard | 更新时间：2025-11-16

- Key solutions and standardization progress for transmission enhancement in Rel-19 NR NTN
- Telecommunications Science Vol. 41, Issue 9, Pages: 177-186(2025)
- 作者机构：
  
  1.上海卫星互联网研究院有限公司，上海 200120
  2.上海市卫星互联网重点实验室，上海 200120
  3.卫星互联网全国重点实验室，上海 200120
  4.东南大学移动通信国家重点实验室，江苏南京 210018
- 作者简介：
- 基金信息：
  
  Shanghai 2024 Science and Technology Innovation Action Plan: Rising-Star Program (Sailing Special Project)(24YF2743100)
- DOI：10.11959/j.issn.1000-0801.2025175
  CLC： TP393
- Received：28 February 2025，
  
  Revised：2025-07-14，
  
  Accepted：06 August 2025，
  
  Published：20 September 2025
- 稿件说明：
移动端阅览
孙羿,梁梦薇,童建飞等.Rel-19 NR NTN传输增强技术方案与标准化进展[J].电信科学,2025,41(09):177-186.

SUN Yi,LIANG Mengwei,TONG Jianfei,et al.Key solutions and standardization progress for transmission enhancement in Rel-19 NR NTN[J].Telecommunications Science,2025,41(09):177-186.
孙羿,梁梦薇,童建飞等.Rel-19 NR NTN传输增强技术方案与标准化进展[J].电信科学,2025,41(09):177-186. DOI： 10.11959/j.issn.1000-0801.2025175.

SUN Yi,LIANG Mengwei,TONG Jianfei,et al.Key solutions and standardization progress for transmission enhancement in Rel-19 NR NTN[J].Telecommunications Science,2025,41(09):177-186. DOI： 10.11959/j.issn.1000-0801.2025175.

摘要

第三代合作伙伴计划（3rd Generation Partnership Project，3GPP）非地面网络（non-terrestrial network，NTN）通过对5G新空口（new radio，NR）协议进行增强设计以适应卫星通信场景，可深度融合地面网络与非地面网络优势，并具备持续演进能力，是实现天地互联的关键技术方向。为应对星地传输功率与频谱资源的限制以及对广覆盖与高容量的双重需求，Rel-19 NR NTN工作组针对下行覆盖增强与上行容量/吞吐量增强两大子议题开展了标准化研究。基于此，首先概述了NTN传输的技术挑战，继而系统分析了上述议题的技术方案及标准化进展，最后展望了Rel-20 NR NTN潜在的传输增强技术演进方向。

Abstract

By adaptively enhancing the terrestrial 5G new radio (NR) protocol for satellite communication scenarios

3GPP non-terrestrial network (NTN) fully integrates the advantages of terrestrial and non-terrestrial networks with continuous evolution capability

which is therefore regarded as an essential enabler for space-ground integration. To address the constraints of limited satellite-ground transmission power and spectral resources

alongside the demand for wide coverage and high capacity

two key sub-topics were prioritized in the Rel-19 NR NTN standardization: downlink coverage enhancement and uplink capacity/throughput enhancement. Based on this

the technical challenges of NTN transmission were firstly outlined. Then

the technical solutions and standardization progress involved in these sub-topics were comprehensively introduced and analyzed. Finally

the potential transmission enhancement technologies for Rel-20 NR NTN were prospected.

关键词

Keywords

references

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