New Multiple Access Technologies for Satellite Internet of Things System

Wei BAI; Yujie ZHANG; Shaoli KANG; Deshan MIAO; Shaohui SUN; Shanzhi CHEN

doi:10.11959/j.issn.2096-8930.2023028

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New Multiple Access Technologies for Satellite Internet of Things System

Special Issue: Integrated Terrestrial and Satellite Communication toward 6G | 更新时间：2024-06-03

- New Multiple Access Technologies for Satellite Internet of Things System
- Space-Integrated-Ground Information Networks Vol. 4, Issue 3, Pages: 31-39(2023)
- 作者机构：
  
  1. 中信科移动通信技术股份有限公司，北京 100083
  2. 中国信息通信科技集团有限公司无线移动通信全国重点实验室，北京 100083
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.2096-8930.2023028
  CLC： TP393
- Online First：2023-09，
  
  Published：20 September 2023
- 稿件说明：
移动端阅览
Wei BAI, Yujie ZHANG, Shaoli KANG, et al. New Multiple Access Technologies for Satellite Internet of Things System[J]. Space-Integrated-Ground Information Networks, 2023, 4(3): 31-39.
DOI：

Wei BAI, Yujie ZHANG, Shaoli KANG, et al. New Multiple Access Technologies for Satellite Internet of Things System[J]. Space-Integrated-Ground Information Networks, 2023, 4(3): 31-39. DOI： 10.11959/j.issn.2096-8930.2023028.

摘要

面向传播时延大、需要服务更大规模用户数的卫星物联网场景，首先分析IoT NTN在技术方案方面的不足，进而提出非协调的随机接入和非正交多址传输（Uncoordinated Random Access and NOMA Transmission

URAT）新型多址接入解决方案。非协调指终端从随机接入到多址传输的过程中不需要专门的网络协调信令；非正交多址传输指所有终端在接入和传输过程中共享基站的时频资源实现非正交多址传输；URAT还实现了多址接入和NOMA传输的融合。理论分析和数值仿真结果表明，所提方案能够降低多址接入时延，提高系统效率，增加可以服务的终端数量，将是面向6G卫星物联网场景的潜在解决方案。

Abstract

For satellite internet of things (IoT) scenarios with high propagation delay and the need to serve a larger number of users

firstly the shortcomings of IoT NTN in terms of technical solutions were analyzed

and then a new type of multi access solution called uncoordinated random access and NOMA transmission (URAT) was proposed.“Uncoordinated” refers to the process where a terminal does not require specialized network coordination signaling; “NOMA transmission” refers to the sharing of base station time-frequency resources by all terminals; URAT also achieves the integration of multiple access and NOMA transmission.Theoretical analysis and numerical simulation results indicated that the proposed scheme could reduce multi access latency

improve system efficiency

and increase the number of devices that could be served.It will be a potential solution for the 6G satellite IoT scenarios.

关键词

Keywords

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