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Paper Abstract and Keywords
Presentation 2012-03-09 10:30
High-Speed Calculation Method for Large Scale Multi-Layer Network Design Problem
Taiju Mikoshi, Toyofumi Takenaka (Nihon Univ.), Ryuta Sugiyama, Akeo Masuda, Kohei Shiomoto, Atsushi Hiramatsu (NTT) NS2011-221
Abstract (in Japanese) (See Japanese page) 
(in English) Multi-layer network optimization has been studied for efficient use of network resources by solving linear programming problem. Here, the multi-layer network consists of lambda-layer network and IP-layer network,
However, when applying this LP problem for a large-scale network with a few hundred nodes, huge amount of variables are used and cannot be handled by middle size computers.
In order to cope with this problem, some heuristic methods have been proposed and evaluated from a viewpoint of accuracy for their computation results.
These heuristic methods reduce variables at lambda layer and also decompose the original LP problem into smaller sub-problems and induce an approximate solution by solving these smaller LP problems.
However, these heuristic methods cannot obtain enough accurate results in many cases.
In this paper, we propose a novel variable reduction method at both lambda and IP-layer by excluding long hops routs. We evaluate our proposed method and the conventional methods and show the availability of our method.
Keyword (in Japanese) (See Japanese page) 
(in English) Linear Programming / Multi-Layer Network Design / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 468, NS2011-221, pp. 237-242, March 2012.
Paper # NS2011-221 
Date of Issue 2012-03-01 (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 NS IN  
Conference Date 2012-03-08 - 2012-03-09 
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 2012-03-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) High-Speed Calculation Method for Large Scale Multi-Layer Network Design Problem 
Sub Title (in English)  
Keyword(1) Linear Programming  
Keyword(2) Multi-Layer Network Design  
1st Author's Name Taiju Mikoshi  
1st Author's Affiliation Nihon University (Nihon Univ.)
2nd Author's Name Toyofumi Takenaka  
2nd Author's Affiliation Nihon University (Nihon Univ.)
3rd Author's Name Ryuta Sugiyama  
3rd Author's Affiliation NTT (NTT)
4th Author's Name Akeo Masuda  
4th Author's Affiliation NTT (NTT)
5th Author's Name Kohei Shiomoto  
5th Author's Affiliation NTT (NTT)
6th Author's Name Atsushi Hiramatsu  
6th Author's Affiliation NTT (NTT)
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Date Time 2012-03-09 10:30:00 
Presentation Time 20 
Registration for NS 
Paper # NS2011-221 
Volume (vol) 111 
Number (no) no.468 
Page pp.237-242 
Date of Issue 2012-03-01 (NS) 

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