空天地网络确定性服务架构、挑战及关键技术

doi:10.19665/j.issn1001-2400.2023.03.001

Abstract

Abstract:

It is one of the important development directions of future 6G communication to meet the extreme communication needs of users in the global vertical industry,cooperate with the terrestrial mobile communication network and the rapidly developing non-terrestrial network (NTN),and break the traditional rigid service mode of "doing your best" to provide users with global deterministic services.First,this paper summarizes the future space-air-ground integrated network architecture and the deterministic service connotation and scenario requirements under this architecture.In addition,it proposes a global network-oriented deterministic service management and a control technology framework.Then,it analyzes the three major challenges faced in the process of global deterministic service,including the difficulty in ensuring the business awareness of users in the global whole scene,orchestrating the end-to-end slicing network space-air-ground integration,and quickly coordinating and scheduling the global multidimensional resources in the slicing subnet.In response to the above challenges,three solutions are introduced respectively,namely,intelligent cloud-based full-domain,full-scene service sensing technology,satellite earth end-to-end intelligent slicing orchestration based on network topology prediction,and data and model-driven satellite earth resource intelligent allocation technology,which provide a reference for the development of space-air-ground integrated network extreme service technology.

Key words: space-air-ground integration, deterministic service, intelligent perception, network slicing, intelligent resource scheduling

CLC Number:

TN927.23

CAO Huan,CHEN Yan,ZHOU Yiqing,SU Yongtao,LIU Zifan,CHEN Daojin,DING Yashuai. Deterministic service of space-air-ground integrated networks: architecture,challenges and key technologies[J].Journal of Xidian University, 2023, 50(3): 1-18.

Figures/Tables 12

References 65

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行业	案例	效果
智慧港口	宁波港	控制信号平均时延降低约64%
智能电网	深圳5G智能电网	巡视效率提升11倍,停电0.02 s自动隔离
智能制造	海尔互联工厂	设备停机故障降低约25%,生产效率提升约40%,投资成本节省约30%

名称	轨道高度范围/km	轨道	对地面覆盖范围/km
GEO卫星	35 786	相对于地球上固定点静止	200~3 500
MEO卫星	7 000~25 000	环绕地球	100~1 000
LEO卫星	300~1 500		100~1 000
HAPS/UAV低空平台	8~50	临近空间静止	5~200

Deterministic service of space-air-ground integrated networks: architecture,challenges and key technologies

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