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Paper Abstract and Keywords
Presentation 2011-12-15 14:05
Dynamic Spectrum Access with Variable Bandwidth Demand of Secondary Users for Cognitive Radio Networks
Yasuharu Konishi, Hiroyuki Masuyama, Shoji Kasahara, Yutaka Takahashi (Kyoto Univ.) NS2011-128 RCS2011-241
Abstract (in Japanese) (See Japanese page) 
(in English) In cognitive-radio (CR) networks, available sub-channels are dynamically assigned to the secondary users (SUs). However, when a primary user accesses a primary channel consisting of multiple sub-channels, data transmissions of the SUs already using the sub-channels may be terminated. In this paper, we analyze the performance of dynamic spectrum allocation with channel bonding, in which the number of sub-channels used by SUs are variable. We model the system with a continuous-time Markov chain, deriving the blocking probability, forced termination probability, and throughput for SUs. In terms of the way of forced termination, we consider two policies; one is that SUs using the largest number of sub-channels are forced to terminate their transmissions, and the other is that SUs using the smallest number of sub-channels are chosen for termination. Numerical examples show that in both forced-termination policies, the throughput of SUs that are forced to terminate their transmissions degrades as the offered load to the system increases.
Keyword (in Japanese) (See Japanese page) 
(in English) Cognitive-radio networks / Spectrum handoff / Channel bonding / Forced-termination policy / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 344, NS2011-128, pp. 55-60, Dec. 2011.
Paper # NS2011-128 
Date of Issue 2011-12-08 (NS, RCS) 
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)
Download PDF NS2011-128 RCS2011-241

Conference Information
Committee NS RCS  
Conference Date 2011-12-15 - 2011-12-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Yamaguchi University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Ad-hoc Network, Ubiquitous Network, Wireless Communication, security, Multi-Access Network 
Paper Information
Registration To NS 
Conference Code 2011-12-NS-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Dynamic Spectrum Access with Variable Bandwidth Demand of Secondary Users for Cognitive Radio Networks 
Sub Title (in English)  
Keyword(1) Cognitive-radio networks  
Keyword(2) Spectrum handoff  
Keyword(3) Channel bonding  
Keyword(4) Forced-termination policy  
1st Author's Name Yasuharu Konishi  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Hiroyuki Masuyama  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Shoji Kasahara  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
4th Author's Name Yutaka Takahashi  
4th Author's Affiliation Kyoto University (Kyoto Univ.)
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Date Time 2011-12-15 14:05:00 
Presentation Time 25 
Registration for NS 
Paper # IEICE-NS2011-128,IEICE-RCS2011-241 
Volume (vol) IEICE-111 
Number (no) no.344(NS), no.345(RCS) 
Page pp.55-60(NS), pp.51-56(RCS) 
#Pages IEICE-6 
Date of Issue IEICE-NS-2011-12-08,IEICE-RCS-2011-12-08 

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