Research on Architecture of LEO Satellite Internet of Things and Key Technologies

Xiaojin DING; Tao HONG; Rui LIU; Wentao PENG; Gengxin ZHANG

doi:10.11959/j.issn.2096-8930.2021038

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Research on Architecture of LEO Satellite Internet of Things and Key Technologies

Special Issue: 6G-Oriented Space-Integrated-Ground Information Network | 更新时间：2024-06-05

- Research on Architecture of LEO Satellite Internet of Things and Key Technologies
- Space-Integrated-Ground Information Networks Vol. 2, Issue 4, Pages: 10-18(2021)
- 作者机构：
  
  1. 南京邮电大学物联网学院，江苏南京 210003
  2. 南京邮电大学通信与信息工程学院，江苏南京 210003
  3. 南京邮电大学卫星通信研究所，江苏南京 210003
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.2096-8930.2021038
  CLC： TP927
- Published Online：2021-12，
  
  Published：20 December 2021
- 稿件说明：
移动端阅览
Xiaojin DING, Tao HONG, Rui LIU, et al. Research on Architecture of LEO Satellite Internet of Things and Key Technologies[J]. Space-integrated-ground information networks, 2021, 2(4): 10-18.
DOI：

Xiaojin DING, Tao HONG, Rui LIU, et al. Research on Architecture of LEO Satellite Internet of Things and Key Technologies[J]. Space-integrated-ground information networks, 2021, 2(4): 10-18. DOI： 10.11959/j.issn.2096-8930.2021038.

摘要

首先分析低轨卫星物联网的系统组成和需求特征，并设计低轨卫星物联网的体系架构；其次，研究电磁和传播环境感知方法，通过构建神经网络模型智能提取电磁环境和信道特征；再次，探究活跃终端身份辨识方法，以检测异步接入活跃终端身份；最后，考虑多输入多输出技术作为地面移动通信系统提升容量的主要手段，探索两种卫星空间域资源挖掘算法，以实现低轨卫星物联网终端碰撞减缓和容量提升。仿真结果表明，所设计的空间域资源挖掘方法可有效减缓终端间信号碰撞，显著提升低轨卫星物联网终端并发接入容量。

Abstract

First

we analyzed the composition and demand characteristics of LEO satellite IoTs

and designed an architecture of LEO satellite IoTs.Second

to extracted characteristics of electromagnetic environment and channel

we studied electromagnetic environment and channel sensing methods through constructing neural network model.Then

we investigated an active terminal-identifi cation method for detecting active terminals.Finally

considered multiple-input multiple-output as the main approach to improved the capacity of terrestrial mobile communication systems

we explored a pair of algorithms of mining satellite spatial resources for realizing the collision mitigation and capacity improvement of LEO IoT terminals.Simulation results showed that the designed method sofmining spatial-domain resources could mitigated eff ectively signal collisions among IoT terminals

and improved signifi cantly the concurrent accessing number of LEO satellite IoT terminals.

关键词

Keywords

references

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