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Paper Abstract and Keywords
Presentation 2014-09-12 09:20
In-network Detection of Rare Content Pieces for BitTorrent Swarm
Daishi Kondo, Akihiro Nakao (Univ. of Tokyo) NS2014-91
Abstract (in Japanese) (See Japanese page) 
(in English) BitTorrent constructs an overlay network without considering the structure of the underlay network and the redundant traffic between ASes causes the increase in the peering cost. Although one of the ways to eliminate redundant traffic is to utilize in-network cache in programmable nodes, the challenge is to retain high cache hit ratio. This paper proposes three steps for resolving this issue: (1)infer the pieces of files to be exchanged in near future, (2)caching algorithm, and (3)SDN flow control to increase hit ratio, and especially reports the evaluation in (1). To be concrete, we think it effective to infer rare pieces perceived by peers transparently to peers, since BitTorrent adopts Rarest First Algorithm where rare pieces are to be exchanged first. Thus, inspecting BITFIELD/HAVE messages within network, we evaluate by simulation how effectively our proposed method infers the rare pieces that peers observe.
Keyword (in Japanese) (See Japanese page) 
(in English) BitTorrent / In-network Packet Inspection / BITFIELD/HAVE Message / Rarest First Algorithm / Rare Piece / In-network Cache / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 206, NS2014-91, pp. 73-78, Sept. 2014.
Paper # NS2014-91 
Date of Issue 2014-09-04 (NS) 
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)
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Conference Information
Committee CS NS IN  
Conference Date 2014-09-11 - 2014-09-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. Research Institute of Electrical Communication 2gokan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Post IP networking, Next Generation Network (NGN)/New Generation Network (NWGN), Contingency Plan/BCP, Network Coding/Network Algorithms, Session Management (SIP/IMS), Internetworking/Standardization, Network configuration, etc. 
Paper Information
Registration To NS 
Conference Code 2014-09-CS-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) In-network Detection of Rare Content Pieces for BitTorrent Swarm 
Sub Title (in English)  
Keyword(1) BitTorrent  
Keyword(2) In-network Packet Inspection  
Keyword(3) BITFIELD/HAVE Message  
Keyword(4) Rarest First Algorithm  
Keyword(5) Rare Piece  
Keyword(6) In-network Cache  
1st Author's Name Daishi Kondo  
1st Author's Affiliation The University of Tokyo (Univ. of Tokyo)
2nd Author's Name Akihiro Nakao  
2nd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
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Date Time 2014-09-12 09:20:00 
Presentation Time 25 
Registration for NS 
Paper # IEICE-NS2014-91 
Volume (vol) IEICE-114 
Number (no) no.206 
Page pp.73-78 
#Pages IEICE-6 
Date of Issue IEICE-NS-2014-09-04 

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