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Paper Abstract and Keywords
Presentation 2010-03-05 09:50
Design Method of Smallest Robust Networks against Performance Deterioration during Failures
Nozomu Katayama, Takeshi Fujimura, Hiroyoshi Miwa (Kwansei Gakuin Univ.), Noriaki Kamiyama, Haruhisa Hasegawa, Hideaki Yoshino (NTT) NS2009-228
Abstract (in Japanese) (See Japanese page) 
(in English) A telecommunication network should be reliable, since it is important as social infrastructure. But it is known that, in many real networks, there exists the risk that the quality of service drastically deteriorates when the length of paths increases by a link failure. To get rid of this risk, it is necessary to design a network that the maximum increasing rate of the length of all paths in a link failure is small. We proposed an approximation algorithm for a network design problem that constructs such a network by adding some links to a network in our previous paper. On the other hand, when we construct a network from scratch, we must consider not only the quality of the failure time but also that of the normal time. In this paper, we formalize this network design problem as the optimization problem that determines a graph with a constrained degree and diameter so that the maximum increasing rate of the lengths of all paths in an edge deletion is not more than a threshold. First, we prove that this problem is NP-complete. Next, we propose an approximation algorithm for this problem and evaluate its performance by applying the algorithm to some real ISP networks. As a result, the proposed algorithm shows the good performance.
Keyword (in Japanese) (See Japanese page) 
(in English) quality of service / path length / optimization problem / NP-complete / approximation algorithm / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 448, NS2009-228, pp. 369-374, March 2010.
Paper # NS2009-228 
Date of Issue 2010-02-25 (NS) 
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)
Download PDF NS2009-228

Conference Information
Committee NS IN  
Conference Date 2010-03-04 - 2010-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Miyazaki Phoenix Seagaia Resort (Miyazaki) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General, NS+IN workshop (March 4-5) 
Paper Information
Registration To NS 
Conference Code 2010-03-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design Method of Smallest Robust Networks against Performance Deterioration during Failures 
Sub Title (in English)  
Keyword(1) quality of service  
Keyword(2) path length  
Keyword(3) optimization problem  
Keyword(4) NP-complete  
Keyword(5) approximation algorithm  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Nozomu Katayama  
1st Author's Affiliation Kwansei Gakuin University (Kwansei Gakuin Univ.)
2nd Author's Name Takeshi Fujimura  
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.)
4th Author's Name Noriaki Kamiyama  
4th Author's Affiliation NTT Service Integration Laboratories (NTT)
5th Author's Name Haruhisa Hasegawa  
5th Author's Affiliation NTT Service Integration Laboratories (NTT)
6th Author's Name Hideaki Yoshino  
6th Author's Affiliation NTT Service Integration Laboratories (NTT)
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Speaker Author-1 
Date Time 2010-03-05 09:50:00 
Presentation Time 20 minutes 
Registration for NS 
Paper # NS2009-228 
Volume (vol) vol.109 
Number (no) no.448 
Page pp.369-374 
#Pages 6 
Date of Issue 2010-02-25 (NS) 

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