软件定义的星地融合智能无线网络

doi:10.11959/j.issn.1000-0801.2021123

Abstract

Abstract:

With the superiorities of providing network services for all scenarios of three-dimensional space, air, ground, and ocean, and satisfying the future network differential requirements on all services, the satellite-terrestrial integrated network (STIN) has become a hot spot in the development of 6G.Firstly, the current research development of the low-orbit satellite constellation and STIN were reviewed, and the challenges faced by the integrated satellite-terrestrial networking were discussed.Then, the software defined intelligent system architecture of the integrated satellite-terrestrial wireless network based on distributed SDN controllers was proposed to address the characteristics of STIN such as the complex architecture, high dynamic of network topology, the heterogeneity of network devices and protocols, which facilitated efficient satellite-terrestrial collaborative network management and control.In the end, the key techniques of the satellite-terrestrial flexible and reconfigurable collaborative networking were outlined, and the future development were presented.

Key words: satellite-terrestrial integrated network, software defined network, artificial intelligence, flexible and reconfigurable networking

CLC Number:

TP393

Shuo YUAN, Yijing REN, Zeyu WANG, Yaohua SUN, Mugen PENG. Software defined intelligent satellite-terrestrial integrated wireless network[J]. Telecommunications Science, 2021, 37(6): 66-77.

Figures/Tables 7

References 18

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对比项	通信实体	海拔/km	移动性	双向时延/ms	优势	局限
卫星通信网络	GEO	35 786	与地面相对静止	250~280	广覆盖、广播/多播	较长的传输时延、有限的带宽、成本高昂
	MEO	3 000~20 000	中等速度移动	110~130
	LEO	200~3 000	快速移动	20~25
地面移动通信网络	基站		静止	极低	资源密集、高吞吐量	有限的覆盖范围、灾害抵抗力差

Software defined intelligent satellite-terrestrial integrated wireless network

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