面向6G的星地融合无线传输技术

徐常志; 靳一; 李立; 张学娇; 谢天娇; 汪晓燕; 李明玉; 曹振新

doi:10.11999/JEIT200363

面向6G的星地融合无线传输技术

doi: 10.11999/JEIT200363

徐常志^{1, 2, ,},
靳一²,
李立²,
张学娇²,
谢天娇²,
汪晓燕²,
李明玉³,
曹振新¹

1.
东南大学毫米波国家重点实验室南京 210096
2.
中国空间技术研究院西安分院西安 710100
3.
重庆大学微电子与通信工程学院重庆 400044

基金项目: 国家自然科学基金(61801377)，国家重点研发计划项目(2019YFB1803102)

详细信息

作者简介:
徐常志：男，1985年生，高级工程师，博士，研究方向为卫星通信与网络

靳一：男，1984年生，高级工程师，博士，研究方向为卫星通信与网络

李立：男，1976年生，研究员，研究方向为卫星通信与网络

张学娇：女，1987年生，工程师，博士，研究方向为激光通信与组网

谢天娇：女，1983年生，研究员，博士，研究方向为卫星网络及信道编译码技术

汪晓燕：女，1971年生，工程师，博士，研究方向为激光通信技术

李明玉：男，1978年生，副教授，博士，研究方向为射频电路与系统

曹振新：男，1976年生，研究员，博士，研究方向为天线理论与设计

通讯作者:
徐常志　sandy_xu@126.com

中图分类号: TN911.3
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出版历程
- 收稿日期: 2020-05-08
- 修回日期: 2020-08-26
- 网络出版日期: 2020-09-02
- 刊出日期: 2021-01-15

Wireless Transmission Technology of Satellite-terrestrial Integration for 6G Mobile Communication

1.
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
2.
China Academy of Space Technology-Xi’an, Xi’an 710100, China
3.
School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, China

Funds: The National Natural Science Foundation of China (61801377), The National Key Research and Development Program (2019YFB1803102)

摘要

摘要: 随着5G移动通信网络走向商业化，围绕新一代移动通信系统(6G)的发展愿景、能力需求与关键技术开展研究正在成为新的热点。首先，该文概括了未来6G可能涉及的星地深度融合、新谱段通信、分布式协作MIMO和智能通信等关键技术方向，重点探讨了基于星地深度融合的天地一体化网络(SGIN)；然后，针对可能存在的两种典型网络拓扑架构，分析了星间高速链路、星地馈电链路和星地用户链路的特点和技术要求，综述了3种不同类型传输链路的高速通信进展情况。最后，对未来6G天地互联网络亟需突破的光学相控阵多用户接入、高效能星地激光通信和光电一体化组网等关键技术进行分析与展望，以期为后续相关研究指明方向。
- 6G /
- 星地深度融合 /
- 星地馈电链路 /
- 光学相控阵 /
- 光电一体化组网
Abstract: With the commercialization of 5G mobile communication networks, researches on the development vision, capability requirements and key technologies of the new generation mobile communication systems (6G) are becoming new hotspots. Firstly, the key technical fields are summarized that may be involved in the future 6G communication, including the deep satellite-terrestrial integration, the new spectrum communication, the distributed cooperative MIMO and intelligent communication. The Space-Ground Integration Network (SGIN) based on the deep satellite-terrestrial integration is discussed further. Secondly, for the two possible network topologies, the characteristics and technical requirements of the interstellar high-speed link, the satellite-terrestrial feeder links and the user links are analyzed. The progress of high-speed communication applied to three different types of transmission links is summarized. In the end, the key technologies which are urgently needed to break through in the SGIN are analyzed and prospected, such as the multiple-access based on optical phased array, the high-efficiency satellite-terrestrial laser communication and the optoelectronic hybrid networking, and the directions are pointed out for the subsequent related researches.
- 6G /
- Deep satellite-terrestrial integration /
- Satellite-terrestrial feeder links /
- Optical phased array /
- Optoelectronic hybrid networking

HTML全文

图 1 “主干网+接入网”的网络架构

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图 2 低轨星座网络的网络架构

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图 3 实践二十号卫星激光终端

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图 4 穿过大气湍流的常规高斯光束和锋芒光束的光强模式比较

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图 5 星载光电混合交换结构

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图 6 6G软件定义网络的架构

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表 1 国内外星间激光链路代表性研究成果

序号	任务名称	链路类型	国家/ 地区	发射时间	通信速率	链路状态	参考文献
1	EDRS/ Copernics/ Airbus A310 AOC	高轨-地、高轨-低轨、高轨-飞机	欧洲	2016～2019	1.8 Gbps@BPSK	在轨	文献[16,17]
2	OCSD	低轨-低轨低轨-地	美国	2017	100 Mbps@OOK (立方星)	运行	文献[18]
3	HICALI/ CubeSOTA	高轨-低轨高轨-地	日本	2021	10 Gbps@DPSK		文献[19]
4	EDRS-D	高轨-高轨	欧洲日本	2025	3.6 Gbps～10 Gbps @BPSK		文献[20]
5	CLICK/ Q4/ TBIRD	低轨-低轨	欧洲美国	2020～2024	100 Mbps～1 Gbps @OOK, BPSK; 200 Gbps(WDM) (立方星)	计划	文献[21-28]
6	Scylight	高轨-高轨、高轨-低轨、高轨-地	欧洲	2025	100 Gbps		文献[29]

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