典型文献
Help from space:grant-free massive access for satellite-based IoT in the 6G era
文献摘要：
The Sixth-Generation(6G)standard for wireless communications is expected to realize ubiquitous coverage for massive Internet of Things(IoT)networks by 2030.Satellite-based communications are recognized as a highly promising technical enabler to satisfy IoT service requirements in the 6G era.This study analyzes multiple access technologies,which are essential for the effective deployment of satellite-based IoT.First,we thoroughly investigate the existing research related to massive access,including information-theory considerations as well as Non-Orthogonal Multiple Access(NOMA)and Random Access(RA)technologies.Then,we explore the influence of the satellite transmission environment on multiple access technologies.Based on this study,a Non-orthogonal Massive Grant-Free Access(NoMaGFA)scheme,which reaps the joint benefits of RA and NOMA,is proposed for asynchronous transmissions in satellite-based IoT to achieve improved system throughput and enhance the system robustness under varying traffics.Finally,we identify some important and interesting future developments for satellite-based IoT,including waveform design,transceiver design,resource allocation,and artificial intelligence-enhanced design.
文献关键词：
中图分类号：
作者姓名：
Neng Ye;Jihong Yu;Aihua Wang;Rongrong Zhang
作者机构：
School of Information and Electronics,Beijing Institute of Technology,Beijing,100081,China;Information Engineering College,Capital Normal University,Beijing,100048,China
文献出处：
引用格式：
[1]Neng Ye;Jihong Yu;Aihua Wang;Rongrong Zhang-.Help from space:grant-free massive access for satellite-based IoT in the 6G era)[J].数字通信与网络（英文）,2022(02):215-224
A类：
NoMaGFA,reaps,traffics
B类：
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AB值：
0.605154
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