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Paper Abstract and Keywords
Presentation 2013-03-14 14:25
Channel switching-aware TCP for cognitive radio mobile ad hoc networks
Shun Koba, Kazuya Tsukamoto, Masato Tsuru, Yuji Oie (Kyushu Inst. of Tech.) SITE2012-54 IA2012-92
Abstract (in Japanese) (See Japanese page) 
(in English) With the proliferation of new wireless service, a scarcity of wireless resources will arise and become a critical issue. For this reason, cognitive radio mobile ad hoc networks (CogMANET) are being developed as a promising solution to this problem. However, in CogMANET, channel switching is inherently necessary whenever a primary user with a license appears on the channel. Allowing secondary users to choose an available channel from among a wide range of the spectrum thus enables reliable communication in this context. In such cases, the communication characteristics also change in terms of bottleneck bandwidth and RTT. In response to this change, TCP has to adaptively update its congestion window size (cwnd) to make an efficient use of the available wireless resources. For this purpose, TCP CRAHN was proposed for CogMANET. TCP CRAHN dynamically changes its cwnd, but it can excessively increase its cwnd compared with available buffer space of relay node when the bandwidth increases drastically. Hence, we propose the new TCP, TCP CoBA, which updates the cwnd based upon the available buffer space in the relay node as well as the bandwidth-delay product (BDP). Through simulations, it is shown that compared with TCP CRAHN, TCP CoBA improves the throughput performance by up to 200%.
Keyword (in Japanese) (See Japanese page) 
(in English) Transport Protocol / Cognitive Radio / Mobile Ad-hoc Network / Multi-hop communication / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 489, IA2012-92, pp. 79-84, March 2013.
Paper # IA2012-92 
Date of Issue 2013-03-07 (SITE, IA) 
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)
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Conference Information
Committee IA SITE IPSJ-IOT  
Conference Date 2013-03-14 - 2013-03-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Todaiji Total Cultural Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Internet and Information Ethics Education, etc. 
Paper Information
Registration To IA 
Conference Code 2013-03-IA-SITE-IOT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Channel switching-aware TCP for cognitive radio mobile ad hoc networks 
Sub Title (in English)  
Keyword(1) Transport Protocol  
Keyword(2) Cognitive Radio  
Keyword(3) Mobile Ad-hoc Network  
Keyword(4) Multi-hop communication  
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1st Author's Name Shun Koba  
1st Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
2nd Author's Name Kazuya Tsukamoto  
2nd Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
3rd Author's Name Masato Tsuru  
3rd Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
4th Author's Name Yuji Oie  
4th Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
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Speaker Author-1 
Date Time 2013-03-14 14:25:00 
Presentation Time 25 minutes 
Registration for IA 
Paper # SITE2012-54, IA2012-92 
Volume (vol) vol.112 
Number (no) no.488(SITE), no.489(IA) 
Page pp.79-84 
#Pages 6 
Date of Issue 2013-03-07 (SITE, IA) 

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