基于负载量预测的卫星物联网随机接入研究

茆习文; 王海涛; 张更新

doi:10.11959/j.issn.2096-8930.2023040

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基于负载量预测的卫星物联网随机接入研究

研究 | 更新时间：2024-06-03

- 基于负载量预测的卫星物联网随机接入研究
- Research on Random Access of Satellite Internet of Things Based on Load Prediction
- 天地一体化信息网络 2023年4卷第4期页码：27-37
- 作者机构：
- 作者简介：
  
  [ "茆习文(1998- )，男，南京邮电大学通信与信息工程学院硕士生，主要研究方向为卫星物联网" ]
  [ "王海涛（1980- ），男，南京邮电大学通信与信息工程学院副研究员，主要研究方向为卫星通信和频谱共享" ]
  [ "张更新（1967- ），男，博士，南京邮电大学教授、博士生导师，卫星通信研究所所长，主要从事卫星通信、空间信息网络方面的教学和科研工作" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(62171234);国家自然科学基金资助项目;The National Natural Science Foundation of China(U21A20450)
- DOI：10.11959/j.issn.2096-8930.2023040
  中图分类号： TN927
- 网络出版日期：2023-12，
  
  纸质出版日期：2023-12-20
- 稿件说明：
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茆习文, 王海涛, 张更新. 基于负载量预测的卫星物联网随机接入研究[J]. 天地一体化信息网络, 2023,4(4):27-37.

Xiwen MAO, Haitao WANG, Gengxin ZHANG. Research on Random Access of Satellite Internet of Things Based on Load Prediction[J]. Space-integrated-ground information networks, 2023, 4(4): 27-37.
茆习文, 王海涛, 张更新. 基于负载量预测的卫星物联网随机接入研究[J]. 天地一体化信息网络, 2023,4(4):27-37. DOI： 10.11959/j.issn.2096-8930.2023040.

Xiwen MAO, Haitao WANG, Gengxin ZHANG. Research on Random Access of Satellite Internet of Things Based on Load Prediction[J]. Space-integrated-ground information networks, 2023, 4(4): 27-37. DOI： 10.11959/j.issn.2096-8930.2023040.

摘要

在卫星物联网蓬勃发展的过程中，随机接入协议因其信令开销较小、传输效率高、灵活性高、实现容易的特点被视为最适宜的通信协议，但由于负载变化剧烈，常规随机接入方式只在特定负载范围内具有优势，动态分配随机接入资源需要获取准确的时隙接入申请量。针对以上问题，提出一种随机接入自适应方案，可以根据未来负载量大小自适应选取恰当的随机接入方式，从而提高系统吞吐量，其中，负载量大小可以通过提出的负载量估计及预测方案得到。在传输环境存在窄带干扰时，引入扩频通信手段，使得随机接入自适应方案能够成功运行，并且提出的扩频随机接入自适应方案提升了系统吞吐量。

Abstract

In the process of the vigorous development of satellite internet of things

random access protocol is regarded as the most suitable communication protocol due to its characteristics of low signaling overhead

high transmission efficiency

high flexibility and easy implementation.However

due to drastic load changes

conventional random access mode only has advantages in the specific load range.Dynamic allocation of random access resources requires the accurate number of time slot access applications.In view of the above problems

a random access adaptive scheme was proposed

which could adaptively selected the appropriate random access mode according to the future load size

so as to improved the system throughput.The load size could be obtained through the proposed load estimation and prediction scheme.When narrowband interference exists in the transmission environment

the spread-spectrum communication means was introduced to made the adaptive scheme of random access run successfully.Moreover

the proposed adaptive scheme also improved the system throughput.

关键词

Keywords

references

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