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Paper Abstract and Keywords
Presentation 2015-02-18 11:10
Radio Propagation Measurement for Multi-Link Communication on Message Storage and Transporting System using UA between Disaster Areas
Shun Koba, Hiroaki Homma, Kosuke Yamazaki, Kanshiro Kashiki, Shingo Watanabe (KDDI R&D) SAT2014-54
Abstract (in Japanese) (See Japanese page) 
(in English) In the Great East Japan Earthquake, safety confirmations were so hard because many areas where disconnection of communication networks occurred (isolated areas). For quick recovery of safety communications in isolated areas, we are developing message storage and transporting system using unmanned aircraft (UA) for disaster areas. In such system, the UA has function to pick up the messages (ex. e-mail) in isolated areas and return them to non-isolated areas. Therefore, this system has the merit to establish the communications quickly without influence of damage on the ground. For such system, it is not easy to ensure stable communications because propagation path status between UA and ground equipment changes drastically. Hence, we consider multi-link communication so as to suppress the quality degradation of safety communication. Herein, we show propagation characteristics for multi-link communication between UA and ground equipment. Specifically, we measured radio propagation for two links used in Wi-Fi system (i.e. 2.4 GHz and 5.6 GHz) at the same time. In the measurements, UA equipped with the receiver just receives the Wi-Fi frames transmitted between Wi-Fi devices deployed on the ground. It is considered from the field test that simultaneous degradation are not observed. Therefore, it is concluded that we will obtain the possibility of performance improvement by means of multi-link scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) UA / Disaster / Wi-Fi / Multi-link communication / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 449, SAT2014-54, pp. 19-24, Feb. 2015.
Paper # SAT2014-54 
Date of Issue 2015-02-11 (SAT) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 SAT2014-54

Conference Information
Committee SANE SAT  
Conference Date 2015-02-18 - 2015-02-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawaken Shichoson Jichikaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite application and general 
Paper Information
Registration To SAT 
Conference Code 2015-02-SANE-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Radio Propagation Measurement for Multi-Link Communication on Message Storage and Transporting System using UA between Disaster Areas 
Sub Title (in English)
Keyword(1) UA  
Keyword(2) Disaster  
Keyword(3) Wi-Fi  
Keyword(4) Multi-link communication  
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1st Author's Name Shun Koba  
1st Author's Affiliation KDDI R&D Laboratories, Inc. (KDDI R&D)
2nd Author's Name Hiroaki Homma  
2nd Author's Affiliation KDDI R&D Laboratories, Inc. (KDDI R&D)
3rd Author's Name Kosuke Yamazaki  
3rd Author's Affiliation KDDI R&D Laboratories, Inc. (KDDI R&D)
4th Author's Name Kanshiro Kashiki  
4th Author's Affiliation KDDI R&D Laboratories, Inc. (KDDI R&D)
5th Author's Name Shingo Watanabe  
5th Author's Affiliation KDDI R&D Laboratories, Inc. (KDDI R&D)
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Speaker Author-1 
Date Time 2015-02-18 11:10:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2014-54 
Volume (vol) vol.114 
Number (no) no.449 
Page pp.19-24 
#Pages
Date of Issue 2015-02-11 (SAT) 


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