doi:10.16708/j.cnki.1000.758X.2021.0042

Chinese Space Science and Technology ›› 2021, Vol. 41 ›› Issue (3): 89-96.doi: 10.16708/j.cnki.1000.758X.2021.0042

HOU Junyi¹，ZHAO Liye ^2,*，SHEN Jingshi¹，FENG Fei²，WANG Shaobo²

1 Shandong Institute of Space Electronic Technology，Yantai 264670，China
2 DFH Satellite Co., Ltd.，Beijing 100094，China

Received:2020-09-05 Revised:2020-11-27 Accepted:2020-12-14 Published:2021-06-25 Online:2021-06-25
Contact: 赵黎晔：miety@sohu.com E-mail:miety@sohu.com
About author:侯筠仪（1996-），女，硕士研究生，研究方向为空间信息网络结构技术，hjy_0410@163.com。赵黎晔（1981-），男，高级工程师，研究方向为卫星设计，miety@sohu.com。
Supported by:
高分辨率对地观测系统重大项目基金（GFZX0406120203）

Abstract

Abstract: In the context of satellite network communication services with complex requirements and poor service compatibility of on-board equipment, a software-defined network (SDN) architecture for low-orbit satellite network was proposed. A virtualized data plane based on inter-satellite links and a distributed control plane with multiple controllers were designed in this architecture, which was highly flexible and programmable. Through the network function virtualization (NFV) technology, the data plane virtualization and the functional division of the clustered controller were realized, and the key technical solutions for the realization of the architecture were given to enable the efficient and dynamic allocation of data transmission. The simulation verifies that the SDN satellite network architecture is more stable than the traditional satellite network in the reverse seam scenario in terms of fast route reconfiguration. In the simulation results, the average reconstruction delay is shortened by 82.4%, and the scientific choice of the number of controllers is verified. The simulation results reflect the advanced nature of the SDN satellite network architecture.

Key words: LEO, satellite communication, SDN, NFV, controller integration

CLC Number:

HOU Junyi, ZHAO Liye , SHEN Jingshi, FENG Fei, WANG Shaobo. [J]. Chinese Space Science and Technology, 2021, 41(3): 89-96.

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