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Paper Abstract and Keywords
Presentation 2022-03-03 10:20
Radio Protection Area Estimation for Sub-6GHz-Band Spectrum Sharing System Assisted by VHF-Band Radio Sensing Information
Shingo Tomida, Keiichi Mizutani, Hiroshi Harada (Kyoto Univ.) SRW2021-73
Abstract (in Japanese) (See Japanese page) 
(in English) 5G system service was launched in 2020. In Japan, apart from the nationwide public service of 5G systems by telecommunication carriers, a private 5G system in sub-6 GHz band called local 5G system is actively used. When multiple local 5G systems are operated at the same frequency in nearby areas, it is important that they can be operated without interference with each other. To avoid interference between systems with high efficiency, it is necessary to calculate the radio protection area of each system based on the radio wave propagation model. However, it is necessary to add an appropriate margin to the calculated radio protection area for reliable operation. In this report, we propose a method using VHF band sensing information to estimate the margin of the radio protection area for the sub-6 GHz band spectrum sharing system. In the proposed method, a VHF reference signal generator is installed at the same location as the sub-6 GHz base station to be protected, and the VHF propagation from the reference signal generator is observed in real-time. The proposed method adds a minimum margin by combining the observed VHF band reception area and the radio protection area estimated by the conventional method. The proposed method is evaluated using the results of radio propagation experiments in the VHF and sub-6 GHz bands conducted on the campus of Kyoto University, and its effectiveness is demonstrated.
Keyword (in Japanese) (See Japanese page) 
(in English) Spectrum sharing system / Radio propagation model / Radio protection area / 5G / Local 5G / Sub-6 GHz band / VHF band / Radio sensing system  
Reference Info. IEICE Tech. Rep., vol. 121, no. 393, SRW2021-73, pp. 21-26, March 2022.
Paper # SRW2021-73 
Date of Issue 2022-02-23 (SRW) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SRW2021-73

Conference Information
Committee RCS SR SRW  
Conference Date 2022-03-02 - 2022-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To SRW 
Conference Code 2022-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Radio Protection Area Estimation for Sub-6GHz-Band Spectrum Sharing System Assisted by VHF-Band Radio Sensing Information 
Sub Title (in English)  
Keyword(1) Spectrum sharing system  
Keyword(2) Radio propagation model  
Keyword(3) Radio protection area  
Keyword(4) 5G  
Keyword(5) Local 5G  
Keyword(6) Sub-6 GHz band  
Keyword(7) VHF band  
Keyword(8) Radio sensing system  
1st Author's Name Shingo Tomida  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Keiichi Mizutani  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Hiroshi Harada  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2022-03-03 10:20:00 
Presentation Time 25 minutes 
Registration for SRW 
Paper # SRW2021-73 
Volume (vol) vol.121 
Number (no) no.393 
Page pp.21-26 
#Pages 6 
Date of Issue 2022-02-23 (SRW) 

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