基于天基极简核心网的星地协同组网架构、技术及试验

doi:10.11959/j.issn.1000-0801.2024169

Abstract

Abstract:

Facing the future vision of ubiquitous network coverage, the deep integration and cooperative networking between satellite and terrestrial mobile communication network is a necessary technical path to build a space-air-ground integrated network, which can support access at anytime and anywhere. Firstly, current situation and development trend of space-air-ground integrated network were introduced. Then, the network architecture of satellite-terrestrial network and the design of space-based simplified core network were discussed, as well as the key technologies of satellite-terrestrial network. Finally, the proposed network architecture was verified by relevant experiments. and the follow-up research plan and outlook for future directions were discussed.

Key words: space-air-ground integrated network, satellite-terrestrial network, simplified core network, space-based core network

CLC Number:

TN929.5

Xiaohan PAN, Lu LU, Pingke DENG, Jiacheng WANG, Nanxiang SHI, Shaowen ZHENG. Architecture, technologies and experiment of satellite-terrestrial network based on space-based simplified core network[J]. Telecommunications Science, 2024, 40(6): 49-59.

Figures/Tables 10

References 13

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星座名称用户服务	早期低轨卫星星座		当前正在部署的宽带低轨卫星星座			规划中手机直连卫星专门星座
	铱星	全球星	OneWeb	Starlink （中继）	TeleSat	AST	LYNK	Starlink （直连）
	电话、传真、数据、寻呼	电话、传真、数据、寻呼	全球宽带服务	全球宽带服务	全球宽带服务	消息、语音、宽带通信服务	面向应急的间歇式窄带通信服务	消息、语音、宽带通信服务
规划卫星数量/颗	66	48	648	4.2万	198	336	1 000	2 016
轨道高度/km	780	1 414	1 200	328~580	1 000	725~740	500	328~580
单星质量/kg	680	450	150	295	700	1 500	1 000	1 250
单星容量	128 kbit/s	1.2 Mbit/s	6 Gbit/s	17 Gbit/s	50 Gbit/s	1 Gbit/s	1 Gbit/s	1 Gbit/s
工作频段	L	L	Ku	Ka	Ka	700/1 800/3 500 MHz	600~ 900 MHz	1 900 MHz

[1]	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.
[2]	Guoyu PENG, Shuo WANG, Guizhen LI, Yuhan WEN, Tao HUANG. Research on space-air-ground integrated deterministic networking [J]. Telecommunications Science, 2023, 39(11): 13-26.
[3]	Pingke DENG, Tongxu ZHANG, Nanxiang SHI, Tong ZHANG, Tianzhu SHAO, Shaowen ZHENG. Computing satellite networks—the novel development of computing-empowered space-air-ground integrated networks [J]. Telecommunications Science, 2022, 38(6): 71-81.

Architecture, technologies and experiment of satellite-terrestrial network based on space-based simplified core network

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