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Paper Abstract and Keywords
Presentation 2014-03-03 16:40
QZSS Short Message SS-CDMA Communication : Access Control with Reserve Channel
Tomohide Takahashi, Yuji Miyake, Suguru Kameda, Akinori Taira (Tohoku Univ), Fumihiro Yamagata (Kushiro National College of Technology), Hiroshi Oguma (Toyama National College of Technology), Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi (Tohoku Univ) RCS2013-332
Abstract (in Japanese) (See Japanese page) 
(in English) Quasi-Zenith Satellite System (QZSS) is expected to provide a high accurate positioning service and allows two-way communication which includes the terminal location and short messages. We have proposed Flag
method as an access control scheme designed for QZSS short message SS-CDMA communication. By applying Flag method to Frame Slotted ALOHA, the optimal channel efficiency of random access condition can be achieved constantly.
However, it remains low even in optimum condition. In this paper, we propose reservation channel (R-Ch) as an access control scheme which improve an upper limit of channel efficiency. Necessary time of accommodating 3 million mobile terminals when using Flag method only and R-Ch and Flag method are shown. R-Ch and Flag method can reduce the time by half compared with Flag method only.
Keyword (in Japanese) (See Japanese page) 
(in English) Quasi-Zenith Satellite System (QZSS) / satellite communication / Global Positioning System (GPS) / Spread Spectrum Code Division Multiple Access (SS-CDMA) / access control / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 456, RCS2013-332, pp. 157-162, March 2014.
Paper # RCS2013-332 
Date of Issue 2014-02-24 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 RCS SR SRW  
Conference Date 2014-03-03 - 2014-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Waseda Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2014-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) QZSS Short Message SS-CDMA Communication : Access Control with Reserve Channel 
Sub Title (in English)  
Keyword(1) Quasi-Zenith Satellite System (QZSS)  
Keyword(2) satellite communication  
Keyword(3) Global Positioning System (GPS)  
Keyword(4) Spread Spectrum Code Division Multiple Access (SS-CDMA)  
Keyword(5) access control  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Tomohide Takahashi  
1st Author's Affiliation Tohoku University (Tohoku Univ)
2nd Author's Name Yuji Miyake  
2nd Author's Affiliation Tohoku University (Tohoku Univ)
3rd Author's Name Suguru Kameda  
3rd Author's Affiliation Tohoku University (Tohoku Univ)
4th Author's Name Akinori Taira  
4th Author's Affiliation Tohoku University (Tohoku Univ)
5th Author's Name Fumihiro Yamagata  
5th Author's Affiliation Kushiro National College of Technology (Kushiro National College of Technology)
6th Author's Name Hiroshi Oguma  
6th Author's Affiliation Toyama National College of Technology (Toyama National College of Technology)
7th Author's Name Noriharu Suematsu  
7th Author's Affiliation Tohoku University (Tohoku Univ)
8th Author's Name Tadashi Takagi  
8th Author's Affiliation Tohoku University (Tohoku Univ)
9th Author's Name Kazuo Tsubouchi  
9th Author's Affiliation Tohoku University (Tohoku Univ)
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Speaker Author-1 
Date Time 2014-03-03 16:40:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2013-332 
Volume (vol) vol.113 
Number (no) no.456 
Page pp.157-162 
#Pages
Date of Issue 2014-02-24 (RCS) 


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