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Paper Abstract and Keywords
Presentation 2019-12-06 13:25
A Basic Study of Spectrum Sharing between HAPS and Terrestrial Mobile Communication Systems
Mitsukuni Konishi, Takuya Nishimaki, Sho Nabatame, Atsushi Nagate (HAPSMobile) SR2019-105
Abstract (in Japanese) (See Japanese page) 
(in English) High-Altitude Platform Station (HAPS) is a new mobile communications platform which can provide mobile communications services from stratosphere to terrestrial LTE (Long Term Evolution) or 5G NR (New Radio) UEs (User Equipment) directly by utilizing aerial vehicles such as balloon, airplane or airship with radio equipment at the altitude of 20km. The service area of the HAPS overlaps that of terrestrial mobile communications systems due to its ultra-wide coverage. In this case, spectrum sharing between HAPS and the terrestrial systems effectively utilizes spectrum resources. However, conventional studies on the spectrum sharing between HAPS and terrestrial systems have not been investigated so far. In this paper, we propose a downlink spectrum sharing system between HAPS and the terrestrial networks. In addition to this, we evaluate the communications quality of the downlink spectrum sharing in the actual environments based on outdoor propagation measurement and clarify the feasibility of the proposed system.
Keyword (in Japanese) (See Japanese page) 
(in English) HAPS / Spectrum sharing / Outdoor propagation measurement / / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 325, SR2019-105, pp. 95-102, Dec. 2019.
Paper # SR2019-105 
Date of Issue 2019-11-28 (SR) 
ISSN Online edition: ISSN 2432-6380
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)
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Conference Information
Committee SR  
Conference Date 2019-12-05 - 2019-12-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Ishigaki City Hall (Ishigaki Island) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) cognitive radio, machine learning application, heterogeneous network, SDN, IoT etc. 
Paper Information
Registration To SR 
Conference Code 2019-12-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Basic Study of Spectrum Sharing between HAPS and Terrestrial Mobile Communication Systems 
Sub Title (in English)  
Keyword(1) HAPS  
Keyword(2) Spectrum sharing  
Keyword(3) Outdoor propagation measurement  
1st Author's Name Mitsukuni Konishi  
1st Author's Affiliation HAPSMobile Inc. (HAPSMobile)
2nd Author's Name Takuya Nishimaki  
2nd Author's Affiliation HAPSMobile Inc. (HAPSMobile)
3rd Author's Name Sho Nabatame  
3rd Author's Affiliation HAPSMobile Inc. (HAPSMobile)
4th Author's Name Atsushi Nagate  
4th Author's Affiliation HAPSMobile Inc. (HAPSMobile)
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Speaker Author-1 
Date Time 2019-12-06 13:25:00 
Presentation Time 25 minutes 
Registration for SR 
Paper # SR2019-105 
Volume (vol) vol.119 
Number (no) no.325 
Page pp.95-102 
Date of Issue 2019-11-28 (SR) 

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