Development and challenges of direct-to-handset satellite communication

LI Sidong; LI Xiayu; SUN Jiancheng; KANG Shaoli; LIAO Yunfa; CHEN Junyan

doi:10.11959/j.issn.1000-0801.2024095

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Development and challenges of direct-to-handset satellite communication

direct-to-handset satellite communication | 更新时间：2024-06-05

- Development and challenges of direct-to-handset satellite communication
- Telecommunications Science Vol. 40, Issue 4, Pages: 43-55(2024)
- 作者机构：
  
  1.中国信息通信研究院，北京 100191
  2.中信科移动通信技术股份有限公司，北京 100083
  3.中国信息通信研究院华东分院，上海 201101
- 作者简介：
- 基金信息：
  
  The National Key Research and Development Program of China(2020YFB1808002)
- DOI：10.11959/j.issn.1000-0801.2024095
  CLC： TN927
- Received：15 March 2024，
  
  Revised：15 April 2024，
  
  Published：20 April 2024
- 稿件说明：
移动端阅览
李思栋,李侠宇,孙建成等.手机直连卫星应用发展与挑战[J].电信科学,2024,40(04):43-55.

LI Sidong,LI Xiayu,SUN Jiancheng,et al.Development and challenges of direct-to-handset satellite communication[J].Telecommunications Science,2024,40(04):43-55.
李思栋,李侠宇,孙建成等.手机直连卫星应用发展与挑战[J].电信科学,2024,40(04):43-55. DOI： 10.11959/j.issn.1000-0801.2024095.

LI Sidong,LI Xiayu,SUN Jiancheng,et al.Development and challenges of direct-to-handset satellite communication[J].Telecommunications Science,2024,40(04):43-55. DOI： 10.11959/j.issn.1000-0801.2024095.

摘要

近年来，卫星互联网发展迅速，全球主要国家积极推动卫星星座的建设，星地融合网络成为未来6G的重要演进趋势，手机直连卫星也成为终端厂商的产品卖点。归纳了全球手机直连业务的发展现状，提出3种手机直连技术发展路线，分析手机直连卫星所面临的终端芯片一体化、星地融合、星地频率共享等挑战，总结了手机直连业务所需要攻克的关键技术，如时频同步技术、随机接入技术、HARQ重传技术、移动性管理技术和星上再生网络架构，并对手机直连卫星业务的未来趋势进行研判。

Abstract

In recent years

satellite Internet has developed rapidly

with major countries around the world actively promoting the construction of satellite Internet. The integration of satellite and terrestrial networks has become an important trend in the evolution towards 6G

and direct-to-handset satellite services has also become a selling point for terminal manufacturers. The current state of global direct-to-handset satellite services was summarized

three development routes for direct-to-handset satellite technology were proposed

and the challenges faced by direct-to-handset satellite connections were analyzed

including the integration of terminal chips

integration of satellite and terrestrial networks

and sharing of frequencies between satellite and terrestrial systems. The key technologies that need to be mastered for direct-to-handset satellite services were also outlined

such as time-frequency synchronization technology

random access technology

HARQ retransmission technology

and mobility management technology

and the future trends of direct-to-handset satellite services were assessed.

关键词

Keywords

references

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