面向空天地海一体化的卫星通信关键技术研究

doi:10.11959/j.issn.1000-0801.2024163

Abstract

Abstract:

Building a space-air-ground-sea integrated network is one of the visions of 6G, and it is also an important means to realize the “intelligent connection of all things”. The key element of the future space-air-ground-sea integrated network is satellite communication, which provides global coverage and wide-area connectivity. The basic architecture and development status of the space-air-ground-sea integrated network were discussed, and the satellite communication technology for the space-air-ground-sea integrated network was introduced. Then, several key technologies of satellite communication in the space-air-ground-sea integration scenario were analyzed, including adaptive air interface, multi-satellite cooperative robust beamforming, multi-dimensional resource on-demand scheduling, networking/network management, and network slicing technology. Finally, the challenges and application prospects of satellite communication were discussed under the development trend of space-air-ground-sea integration in the future.

Key words: satellite communication, space-air-ground-sea integration, system architecture, air interface, resource scheduling

CLC Number:

TN927

Gengxin ZHANG, Leiyao LIAO, Yuanzhi HE. Study on the key technologies of satellite communication for space-air-ground-sea integration[J]. Telecommunications Science, 2024, 40(6): 11-24.

Figures/Tables 5

References 31

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低轨星座名称		星座构型				申报卫星总数/颗	工作频段
低轨星座名称		轨道高度/km	轨道倾角/（°）	轨道数	卫星数/颗	申报卫星总数/颗	工作频段
Starlink	一代	550	53.0	72	22	4 408	Ku，Ka
		570	70.0	36	20
		560	97.6	6	58
		540	53.2	72	22
		560	97.6	4	43
	二代	340	53.0	48	110	26 628	Ku，Ka，V，E
		345	46.0	48	110
		350	38.0	48	110
		360	96.9	30	120
		525	53.0	28	120
		530	43	28	120
		535	33	28	120
		604	148	12	12
		614	115.7	18	18
Kuiper		630	51.9	34	34	3 236	Ku，Ka，V
		610	42	36	36
		590	33	28	28
OneWeb	一代	1 200	87.9	18	40（4颗备用）	720（72颗备用）	Ku，Ka，V
	二代	1 200	87.9	18	58	5 652
		1 200	55	32	72
		1 200	40	32	72
AST		725~745	0	1	18	243	LTE，V
		40	1	150
		55	1	75

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Study on the key technologies of satellite communication for space-air-ground-sea integration

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