面向6G卫星物联网的帧内干扰消除随机接入技术研究

doi:10.11959/j.issn.2096-8930.2021040

天地一体化信息网络 ›› 2021, Vol. 2 ›› Issue (4): 27-33.doi: 10.11959/j.issn.2096-8930.2021040

所属专题：专题：面向6G的天地一体化信息网络； 6G

• 专题：面向6G的天地一体化信息网络 • 上一篇下一篇

面向6G卫星物联网的帧内干扰消除随机接入技术研究

徐誉, 郭庆

哈尔滨工业大学电子与信息工程学院，黑龙江哈尔滨 150006

修回日期:2021-11-14 出版日期:2021-12-20 发布日期:2021-12-01
作者简介:徐誉（1995-），男，哈尔滨工业大学电子与信息工程学院博士生，主要研究方向为物联网和多址接入技术
郭庆（1964-），男，哈尔滨工业大学电子与信息工程学院教授，博士生导师，主要研究方向为卫星通信和宽带多媒体通信

Research on Random Access Technology of Inter-Frame Interference Cancellation for 6G Satellite Internet of Things

Yu XU, Qing GUO

School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150006, China

Revised:2021-11-14 Online:2021-12-20 Published:2021-12-01

摘要/Abstract

摘要：

6G网络中一类重要应用场景为超大规模机器类通信，主要面向卫星物联网等海量用户并发接入的应用场景。针对6G卫星通信网络，设计出能够满足机器类通信场景中大规模用户并发接入业务需求的接入机制是一个非常重要的问题。针对这一问题，提出一种基于帧内干扰消除的随机接入协议。在该协议中，每个需要传输数据的接入用户在一帧内发送多个分组副本，接收机通过在帧内采用干扰消除算法，可以将冲突时隙中来自多个用户的分组成功接收。相比于传统的随机接入机制，该机制在多用户并发接入的场景下能够在很大程度上提高吞吐率性能。

关键词: 卫星物联网, 随机接入, 帧内干扰消除, 二分图, 吞吐率

Abstract:

In 6G, one of the important application scenarios is ultra-massive machinetype communications, which is mainly oriented to the application scenarios of concurrent access of massive terminals such as the satellite Internet of Things.How to design an access mechanism that can meet the concurrent access service requirements of large-scale users in machine communication scenarios for the future 6G satellite communication network is an important problem to be solved.A random access protocol based on intra-frame interference cancellation was proposed.In this protocol, each access user who needs to transmit data sends multiple packet copies in one frame, and the receiver can successfully receive packets from multiple users in confl icting time slots by using interference cancellation algorithms in the frame.Compared with the traditional random access mechanism, this mechanism can greatly improve the throughput performance in the scenario of multi-user concurrent access.

Key words: satellite internet of things, random access, inter-frame interference cancellation, bipartite graphs, throughput

中图分类号:

TP393

徐誉, 郭庆. 面向6G卫星物联网的帧内干扰消除随机接入技术研究[J]. 天地一体化信息网络, 2021, 2(4): 27-33.

Yu XU, Qing GUO. Research on Random Access Technology of Inter-Frame Interference Cancellation for 6G Satellite Internet of Things[J]. Space-Integrated-Ground Information Networks, 2021, 2(4): 27-33.

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面向6G卫星物联网的帧内干扰消除随机接入技术研究

Research on Random Access Technology of Inter-Frame Interference Cancellation for 6G Satellite Internet of Things

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