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Paper Abstract and Keywords
Presentation 2014-03-07 09:50
Server Access Traffic Control by Link Metric Update
Takahiro Munechika, Akira Noguchi, Hiroyoshi Miwa (Kwansei Gakuin Univ.) NS2013-228
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, with the spread of broadband Internet access and video contents provide services, large contents in the Internet have increased loads of contents servers and networks. This is at risk of degrading the quality of service. To overcome this problem, some mirror servers providing the same contents are located on a network and a request is navigated to one of the mirror servers. When mirror servers are located in a network and the shortest path routing are used, it is necessary to determine the metrics of links appropriately, because many paths may pass a link with small metric and there is high possibility that it causes the congestion of the link and servers. It is important to determine the link metrics so as to limit the total amount of demand in a link and in a server. In this paper, we define this link metric decision problem to control server access traffic. First, we prove that it is NP-complete. Next, when we restricted this problem to determine the metric of only a link, we show that it can be solved in polynomial time. In addition, we present a heuristic algorithm for the problem when the metrics of all links can be changed. We evaluate these algorithms by using some actual network topologies, and the results showed that server load balance can be realized by the heuristic algorithm.
Keyword (in Japanese) (See Japanese page) 
(in English) Link Metric / Mirror Server / Traffic Control / NP-complete / Polynomial-time Algorithm / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 472, NS2013-228, pp. 301-306, March 2014.
Paper # NS2013-228 
Date of Issue 2014-02-27 (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)
Download PDF NS2013-228

Conference Information
Committee NS IN  
Conference Date 2014-03-06 - 2014-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Miyazaki Seagia 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To NS 
Conference Code 2014-03-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Server Access Traffic Control by Link Metric Update 
Sub Title (in English)  
Keyword(1) Link Metric  
Keyword(2) Mirror Server  
Keyword(3) Traffic Control  
Keyword(4) NP-complete  
Keyword(5) Polynomial-time Algorithm  
1st Author's Name Takahiro Munechika  
1st Author's Affiliation Kwansei Gakuin University (Kwansei Gakuin Univ.)
2nd Author's Name Akira Noguchi  
2nd Author's Affiliation Kwansei Gakuin University (Kwansei Gakuin Univ.)
3rd Author's Name Hiroyoshi Miwa  
3rd Author's Affiliation Kwansei Gakuin University (Kwansei Gakuin Univ.)
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Date Time 2014-03-07 09:50:00 
Presentation Time 20 
Registration for NS 
Paper # IEICE-NS2013-228 
Volume (vol) IEICE-113 
Number (no) no.472 
Page pp.301-306 
#Pages IEICE-6 
Date of Issue IEICE-NS-2014-02-27 

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