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Paper Abstract and Keywords
Presentation 2014-10-30 13:00
[Poster Presentation] Channel Assignment Method for Effective Entry of New Secondary Users in Cognitive Radio
Takashi Kosugi, Takeo Fujii (Univ. of Electro-Comm.) SR2014-64
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, wireless communication is facing shortage of spectrum resource. However, spectrum resource is not utilized completely in time and space domain. In order to obtain better conditioned spectrum resource, spectrum sharing using cognitive radio technology has attracted attention. In the spectrum sharing, unlicensed users (secondary users: SUs) exploit white space (WS) which is unused band by licensed users (primary users: PUs). In the related work, the channel assignment method maximizing the SU communication quality while protecting the PU is proposed when multiple SUs exist. In this method, the distance between SUs using the same channel is maximized and mutual interference among SUs is minimized so as to maximize SU communication quality. Therefore, it may cause the spatial fragmentation of spectrum resource and new SUs are difficult to use the same channel. In this paper, a novel channel assignment method based on the perimeter to area ratio of WS is proposed. In the proposed method, WS is formed for easy entry of new SUs when the channels are assigned to new SUs. The central control server with SU information is prepared and it assigns a channel to new SUs successively. Through computer simulations, increment of the number of SUs with an assigned channel and effective utilization of WS by new SUs are shown.
Keyword (in Japanese) (See Japanese page) 
(in English) Cognitive Radio / Channel Assignment / Spectrum Sharing / / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 284, SR2014-64, pp. 31-32, Oct. 2014.
Paper # SR2014-64 
Date of Issue 2014-10-23 (SR) 
ISSN Print edition: ISSN 0913-5685    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 SR2014-64

Conference Information
Committee SR  
Conference Date 2014-10-30 - 2014-10-31 
Place (in Japanese) (See Japanese page) 
Place (in English) I2R, Singapore 
Topics (in Japanese) (See Japanese page) 
Topics (in English) International Workshop (SmartCom 2014) 
Paper Information
Registration To SR 
Conference Code 2014-10-SR 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Channel Assignment Method for Effective Entry of New Secondary Users in Cognitive Radio 
Sub Title (in English)  
Keyword(1) Cognitive Radio  
Keyword(2) Channel Assignment  
Keyword(3) Spectrum Sharing  
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1st Author's Name Takashi Kosugi  
1st Author's Affiliation The University of Electro-Communications (Univ. of Electro-Comm.)
2nd Author's Name Takeo Fujii  
2nd Author's Affiliation The University of Electro-Communications (Univ. of Electro-Comm.)
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Speaker Author-1 
Date Time 2014-10-30 13:00:00 
Presentation Time 120 minutes 
Registration for SR 
Paper # SR2014-64 
Volume (vol) vol.114 
Number (no) no.284 
Page pp.31-32 
#Pages 2 
Date of Issue 2014-10-23 (SR) 

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