A Study on Extreme Wideband 6G Radio Access Technologies for Achieving 100Gbps Data Rate in Higher Frequency Bands

Satoshi SUYAMA  Tatsuki OKUYAMA  Yoshihisa KISHIYAMA  Satoshi NAGATA  Takahiro ASAI  

Publication
IEICE TRANSACTIONS on Communications   Vol.E104-B   No.9   pp.992-999
Publication Date: 2021/09/01
Publicized: 2021/04/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2020FGI0002
Type of Manuscript: INVITED PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G Evolution and Beyond)
Category: 
Keyword: 
sixth generation mobile communication system,  radio access technology,  millimeter wave,  terahertz wave,  extreme high data rate,  

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Summary: 
In sixth-generation (6G) mobile communication system, it is expected that extreme high data rate communication with a peak data rate over 100Gbps should be provided by exploiting higher frequency bands in addition to millimeter-wave bands such as 28GHz. The higher frequency bands are assumed to be millimeter wave and terahertz wave where the extreme wider bandwidth is available compared with 5G, and hence 6G needs to promote research and development to exploit so-called terahertz wave targeting the frequency from 100GHz to 300GHz. In the terahertz wave, there are fundamental issues that rectilinearity and pathloss are higher than those in the 28GHz band. In order to solve these issues, it is very important to clarify channel characteristics of the terahertz wave and establish a channel model, to advance 6G radio access technologies suitable for the terahertz wave based on the channel model, and to develop radio-frequency device technologies for such higher frequency bands. This paper introduces a direction of studies on 6G radio access technologies to explore the higher frequency bands and technical issues on the device technologies, and then basic computer simulations in 100Gbps transmission using 100GHz band clarify a potential of extreme high data rate over 100Gbps.