面向手机直连的低轨卫星通信：关键技术、发展现状与未来展望

doi:10.11959/j.issn.1000-0801.2023031

电信科学 ›› 2023, Vol. 39 ›› Issue (2): 25-36.doi: 10.11959/j.issn.1000-0801.2023031

• 专题：6G空间互联网 • 上一篇下一篇

面向手机直连的低轨卫星通信：关键技术、发展现状与未来展望

孙耀华, 彭木根

北京邮电大学网络与交换技术国家重点实验室，北京 100876

修回日期:2023-02-11 出版日期:2023-02-20 发布日期:2023-02-01
作者简介:孙耀华（1992- ），男，博士，北京邮电大学副教授，主要研究方向为低轨卫星通信和无线接入网络智能化
彭木根（1978− ），男，博士，北京邮电大学信息与通信工程学院院长、教授、博士生导师，网络与交换技术国家重点实验室副主任，IEEE Fellow，中国电子学会会士，中国通信学会会士。主要研究方向为智简无线网络、空天地海一体化网络、通信感知计算融合等。担任《电信科学》副主编，IEEE IoT期刊指导委员会委员，IEEE Network、IEEE TVT、IEEE TNSE等期刊的编委等
基金资助:
国家重点研发计划项目(2022YFB2902600);北京市新一代信息通信技术创新项目(Z211100004421017);中国通信学会青年人才托举项目(2021QNRC001)

Low earth orbit satellite communication supporting direct connection with mobile phones: key technologies, recent progress and future directions

Yaohua SUN, Mugen PENG

State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

Revised:2023-02-11 Online:2023-02-20 Published:2023-02-01
Supported by:
The National Key Research and Development Program of China(2022YFB2902600);The Beijing Municipal Science and Technology Project(Z211100004421017);The Young Elite Scientists Sponsorship Program by China Institute of Communications(2021QNRC001)

摘要/Abstract

摘要：

为满足全时、全域通信需求，低轨卫星通信将成为6G的重要组成部分。通过对地面移动通信协议体制进行适应性改进，低轨卫星可为地面移动手机终端提供直连服务。介绍了面向手机直连的低轨卫星通信关键技术和商业项目发展现状，探讨了未来需解决的关键问题和潜在技术途径。

关键词: 低轨卫星通信, 手机直连卫星, 星地融合网络

Abstract:

In order to realize anytime and anywhere communication, low earth orbit (LEO) satellite communication becomes a key component in 6G.Through the adaptive enhancement of terrestrial mobile communication protocol, LEO satellites can provide direct connection services for mobile phones.The related key technologies and the recent progress of various commercial programs were introduced, and future issues were also identified together with potential technical solutions.

Key words: low earth orbit satellite communication, direct connection between satellites and mobile phones, integrated satellite-terrestrial network

中图分类号:

TP393

孙耀华, 彭木根. 面向手机直连的低轨卫星通信：关键技术、发展现状与未来展望[J]. 电信科学, 2023, 39(2): 25-36.

Yaohua SUN, Mugen PENG. Low earth orbit satellite communication supporting direct connection with mobile phones: key technologies, recent progress and future directions[J]. Telecommunications Science, 2023, 39(2): 25-36.

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项目名称	Starlink V2	AST SpaceMobile	Lynk Global	Omnispace
上行频段	1 910～1 915 MHz	830～835 MHz	1 GHz以下	2 GHz
		845～849 MHz
下行频段	1 900～1 995 MHz	890～894 MHz	1 GHz以下	2 GHz
在轨（实验）卫星数/颗	0	2	6	2
预计星座规模/颗	＞2 000	243	＞1 000	＞100
星座类型	LEO	LEO	LEO	LEO+MEO
协议类型	地面移动通信协议增强	地面移动通信协议增强	地面移动通信协议增强	地面移动通信协议增强
预期速率	2～4 Mbit/s	＞35 Mbit/s	—	—
应用状态	预备进行测试	完成大型相控阵天线波	完成手机和卫星间的接	—
		束控制测试	入信令交互
技术/业务特性	短消息和语音通话	支持高速上网/透明转	支持短消息业务/星上	—
		发架构	处理架构

面向手机直连的低轨卫星通信：关键技术、发展现状与未来展望

Low earth orbit satellite communication supporting direct connection with mobile phones: key technologies, recent progress and future directions

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