卫星物联网：挑战、方案和发展趋势

陈晓明; 徐兆斌; 尚琳

doi:10.1631/FITEE.2200648

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卫星物联网：挑战、方案和发展趋势

常规文章 | Updated：2023-07-24

- 卫星物联网：挑战、方案和发展趋势
  Cover Article Enhanced Publication
- Satellite Internet of Things: challenges, solutions, and development trends
- 信息与电子工程前沿（英文） 2023年24卷第7期页码：935-944
- Affiliations：
  
  1.College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China
  2.Institute of Advanced Technology, Zhejiang University, Hangzhou 310027, China
  3.Innovation Academy for Microsatellites of Chinese Academy of Sciences, Shanghai 201210, China
  4.Shanghai Spacecom Satellite Technology Ltd., Shanghai 201612, China
- Author bio：
  
  ‡Corresponding author
  zjuxzb@zju.edu.cn
  shangl@microsate.com
- Funds：
  
  National Natural Science Foundation of China(U21A20443)
- DOI：10.1631/FITEE.2200648
  中图分类号： TN929.5
- 纸质出版日期：2023-07-0 ，
  
  网络出版日期：2023-06-16，
  
  收稿日期：2022-12-18，
  
  录用日期：2023-02-26
- Accepted：
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陈晓明, 徐兆斌, 尚琳. 卫星物联网：挑战、方案和发展趋势[J]. 信息与电子工程前沿（英文）, 2023,24(7):935-944.

XIAOMING CHEN, ZHAOBIN XU, LIN SHANG. Satellite Internet of Things: challenges, solutions, and development trends. [J]. Frontiers of information technology & electronic engineering, 2023, 24(7): 935-944.
陈晓明, 徐兆斌, 尚琳. 卫星物联网：挑战、方案和发展趋势[J]. 信息与电子工程前沿（英文）, 2023,24(7):935-944. DOI： 10.1631/FITEE.2200648.

XIAOMING CHEN, ZHAOBIN XU, LIN SHANG. Satellite Internet of Things: challenges, solutions, and development trends. [J]. Frontiers of information technology & electronic engineering, 2023, 24(7): 935-944. DOI： 10.1631/FITEE.2200648.

摘要

卫星物联网是一种有潜力的技术，为分布在全球各地的大规模设备提供无缝覆盖，特别是在没有蜂窝网络覆盖的偏远地区，例如森林、海洋、山区和沙漠。一般而言，卫星物联网采用近地轨道卫星作为无线接入点，可以解决广覆盖问题，但也带来许多挑战。本文首先概述了卫星物联网的基本情况，重点介绍物联网的业务特点。然后，详细分析卫星物联网面临的海量连接、广覆盖、高移动、低功耗和小时延等挑战。进而对这些挑战给出可行的解决方案。具体而言，针对卫星物联网的特点和需求，设计了新的大规模接入协议和技术。最后，本文探讨了卫星物联网的发展趋势，以鼓励广大学者对这一领域开展进一步研究。

Abstract

Satellite Internet of Things (IoT) is a promising way to provide seamless coverage to a massive number of devices all over the world

especially in remote areas not covered by cellular networks

e.g.

forests

oceans

mountains

and deserts. In general

satellite IoT networks take low Earth orbit (LEO) satellites as access points

which solves the problem of wide coverage

but leads to many challenging issues. We first give an overview of satellite IoT

with an emphasis on revealing the characteristics of IoT services. Then

the challenging issues of satellite IoT

i.e.

massive connectivity

wide coverage

high mobility

low power

and stringent delay

are analyzed in detail. Furthermore

the possible solutions to these challenges are provided. In particular

new massive access protocols and techniques are designed according to the characteristics and requirements of satellite IoT. Finally

we discuss several development trends of satellite IoT to stimulate and encourage further research in such a broad area.

关键词

物联网卫星通信低轨卫星海量连接随机接入

Keywords

Internet of ThingsSatellite communicationsLow Earth orbit (LEO)Massive connectivityRandom access

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