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Paper Abstract and Keywords
Presentation 2021-01-18 13:15
[Short Paper] Introducing our initiatives for social implementation of Relay-by-Smartphone -- Kochi City's countermeasure against Tsunami and Cooperation with QZSS --
Yoshiyuki Senoo, Masuto Nishiura, Natsuko Ohuchi, Takashi Hamada (KKE) SRW2020-46
Abstract (in Japanese) (See Japanese page) 
(in English) Ten years are about to pass since the Great East Japan Earthquake. In order to solve the problem of communication blackout due to electricity outage and telecommunication infrastructure troubles, we started joint research of “off-grid” smartphone ad-hoc networking with Tohoku University in 2012, and finally produced "Relay-by-Smartphone®" technology. Then we promoted the social implementation of that technology with Kochi City anticipating enormous damages by the Nankai megathrust earthquakes, and in April 2019, "Kochi City Tsunami SOS App" service was started. In this paper, instead of describing the technical aspects of Relay-by-Smartphone, we describe the importance of universal design for general public use of Relay-by-Smartphone. We also introduce a demonstration experiment in “Enhancement of National Resilience against Natural Disasters” in the second term of the Cabinet Office's Cross-ministerial Strategic Innovation Promotion Program (SIP). In that program, we succeeded in cooperating of the Quasi-Zenith Satellite System Safety Confirmation Service(Q-ANPI) and Relay-by-Smartphone in order to quick grasp the safety information under communication blackout spread in wide area.
Keyword (in Japanese) (See Japanese page) 
(in English) Communication Blackout / D2D Communication / Relay-by-Smartphone / Kochi City Tsunami SOS App / Universal Design / QZSS / Quasi-Zenith Satellite / Q-ANPI  
Reference Info. IEICE Tech. Rep., vol. 120, no. 312, SRW2020-46, pp. 21-21, Jan. 2021.
Paper # SRW2020-46 
Date of Issue 2021-01-11 (SRW) 
ISSN Print edition: ISSN 0913-5685  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 SRW  
Conference Date 2021-01-18 - 2021-01-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) WLAN, WPAN, Ad-hoc, mmWave, etc. 
Paper Information
Registration To SRW 
Conference Code 2021-01-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Introducing our initiatives for social implementation of Relay-by-Smartphone 
Sub Title (in English) Kochi City's countermeasure against Tsunami and Cooperation with QZSS 
Keyword(1) Communication Blackout  
Keyword(2) D2D Communication  
Keyword(3) Relay-by-Smartphone  
Keyword(4) Kochi City Tsunami SOS App  
Keyword(5) Universal Design  
Keyword(6) QZSS  
Keyword(7) Quasi-Zenith Satellite  
Keyword(8) Q-ANPI  
1st Author's Name Yoshiyuki Senoo  
1st Author's Affiliation KOZO KEIKAKU ENGINEERING Inc. (KKE)
2nd Author's Name Masuto Nishiura  
2nd Author's Affiliation KOZO KEIKAKU ENGINEERING Inc. (KKE)
3rd Author's Name Natsuko Ohuchi  
3rd Author's Affiliation KOZO KEIKAKU ENGINEERING Inc. (KKE)
4th Author's Name Takashi Hamada  
4th Author's Affiliation KOZO KEIKAKU ENGINEERING Inc. (KKE)
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Date Time 2021-01-18 13:15:00 
Presentation Time 15 
Registration for SRW 
Paper # IEICE-SRW2020-46 
Volume (vol) IEICE-120 
Number (no) no.312 
Page p.21 
#Pages IEICE-1 
Date of Issue IEICE-SRW-2021-01-11 

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