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Paper Abstract and Keywords
Presentation 2007-06-14 16:40
The Distributed Data Access Schemes in λ Grid Networks
Ryota Usui, Hiroyuki Miyagi, Yutaka Arakawa, Satoru Okamoto, Naoaki Yamanaka (Keio Univ.) PN2007-4
Abstract (in Japanese) (See Japanese page) 
(in English) Since the development of optical network technology, a lambda grid system sharing computing resouce by wide area optical network has been proposed as grid systems. In the grid system, data stored as the file format. To reduce the influence of file damage and to distribute the load, replica files are stored many servers. Parallel downloading is promising to decrease downloading time, improve transfer rate, and distribute load to many servers. However, parallel downloading triggers many bottleneck links in the network, since many links are used in simultaneity. Therefore the blocking probability of new lightpath set up becomes high. In this paper, we propose a server selection method for parallel downloading in WDM network which considers the wavelength availabilities of each links to decrease bottoleneck links and to enhance the network efficiency. The proposed scheme can optimaly select servers and reduce the blocking probability by considering both wavelength availability for each link and original costs.
Keyword (in Japanese) (See Japanese page) 
(in English) lambda Grid / Parallel Downloading / WDM / Photonic Network / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 90, PN2007-4, pp. 19-24, June 2007.
Paper # PN2007-4 
Date of Issue 2007-06-07 (PN) 
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 OCS PN CS  
Conference Date 2007-06-14 - 2007-06-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Chitose Inst. of Science and Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Photonic network, network control, optical switching, wavelength conversion, optical quantum communications, GMPLS, etc. 
Paper Information
Registration To PN 
Conference Code 2007-06-OCS-PN-CS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) The Distributed Data Access Schemes in λ Grid Networks 
Sub Title (in English)  
Keyword(1) lambda Grid  
Keyword(2) Parallel Downloading  
Keyword(3) WDM  
Keyword(4) Photonic Network  
1st Author's Name Ryota Usui  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Hiroyuki Miyagi  
2nd Author's Affiliation Keio University (Keio Univ.)
3rd Author's Name Yutaka Arakawa  
3rd Author's Affiliation Keio University (Keio Univ.)
4th Author's Name Satoru Okamoto  
4th Author's Affiliation Keio University (Keio Univ.)
5th Author's Name Naoaki Yamanaka  
5th Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2007-06-14 16:40:00 
Presentation Time 25 minutes 
Registration for PN 
Paper # PN2007-4 
Volume (vol) vol.107 
Number (no) no.90 
Page pp.19-24 
Date of Issue 2007-06-07 (PN) 

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