Research on several key technologies of satellite Internet

Gengxin ZHANG; Yunfeng WANG; Xiaojin DIGN; Tao HONG; Ziwei LIU; Chen ZHANG

doi:10.11959/j.issn.1000-436x.2021156

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Research on several key technologies of satellite Internet

Topics: Satellite Communications Technology | 更新时间：2024-06-05

- Research on several key technologies of satellite Internet
- Journal on Communications Vol. 42, Issue 8, Pages: 1-14(2021)
- 作者机构：
  
  1. 南京邮电大学通信与信息工程学院，江苏南京 210003
  2. 南京邮电大学卫星通信研究所，江苏南京 210003
  3. 南京邮电大学物联网学院，江苏南京 210003
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(91738201)
- DOI：10.11959/j.issn.1000-436x.2021156
  CLC： TN92
- Online First：2021-08，
  
  Published：25 August 2021
- 稿件说明：
移动端阅览
Gengxin ZHANG, Yunfeng WANG, Xiaojin DIGN, et al. Research on several key technologies of satellite Internet[J]. Journal on Communications, 2021, 42(8): 1-14.
DOI：

Gengxin ZHANG, Yunfeng WANG, Xiaojin DIGN, et al. Research on several key technologies of satellite Internet[J]. Journal on Communications, 2021, 42(8): 1-14. DOI： 10.11959/j.issn.1000-436x.2021156.

摘要

卫星互联网具备全球广域无缝覆盖能力，是未来陆海空天一体化网络的重要组成部分。首先，讨论了卫星互联网体系架构，包括系统一般组成、组网方式、工作过程等，研究了卫星互联网场景下的宽带和窄带业务模型建模方法，以提取业务的空时分布不均特征；然后，分析了频谱共享中的星间同频干扰问题，初步分析表明未来非地球同步轨道（NGSO）星座间会存在较严重的同频干扰，探讨了低轨卫星波束成形设计和高轨卫星跳波束设计方案，通过高效挖掘空间域资源，可显著提升系统容量；最后，对卫星互联网领域的几个技术发展方向进行了展望。

Abstract

Satellite Internet has the ability of global seamless coverage

which will be an important part of the future land-sea-air-space integrated network.Firstly

the architecture of satellite Internet was discussed

which included the general composition of the system

networking mode

working process

etc.Secondly

the methods of modeling broadband and narrowband traffic were proposed to extract the uneven space-time distribution characteristics of traffic for satellite Internet.Then

the co-frequency interference of spectrum-sharing was analyzed

showing that there would be more serious co-frequency interference among different non-geostationary satellite orbit (NGSO) constellations in the future.Next

the schemes of both beamforming design for low earth orbit satellite and beam-hopping design for high orbit satellite were explored

which could significantly improve the system capacity through efficient mining of space-domain resources.Finally

the development prospect of several technologies of satellite Internet were given.

关键词

Keywords

references

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