Reflection on the Development of Satellite Communications and the Integration with Terrestrial Mobile Communications

• 作者: XU Xiaofan WANG Niwei WANG Chunting
• 来源期刊: 中国航天（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: RESEARCH
• 页码范围: 59-66
• 页数: 8页
• 语种: 英文
• DOI: 10.3969/j.issn.1671-0940.2021.01.007

摘要

With the further reduction in cost and the increase in bandwidth, as well as the increase in internet ap-plications, satellite communications are gradually shifting from a complementary role to becoming a fully integrated component of terrestrial communications networks. This paper firstly introduces the development of satellite commu-nications, mobile communications and the global space-terrestrial integrated network. We then propose the functional architecture and network architecture for the integration of satellite communications and terrestrial mobile commu-nications based on 5G core networks. Finally, in order to support the network of the future, four key technologies are presented, a space-terrestrial integrated air interface design, a multi-band space-terrestrial integrated transmission waveform design, space-terrestrial integrated switching and routing technology, along with spectrum sharing and inter-ference coordination technology, all necessary for the development of space-terrestrial integrated networks.