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| Presentation | 2013-03-08 13:00 Method for Finding Links Protected against Increase of Path Length during Failures Kohei Nishida, Hiroyoshi Miwa (Kwansei Gakuin Univ.)  NS2012-265 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A telecommunication network should be reliable, since it is important as social infrastructure. However, in many actual networks, there exists the risk that the quality of service drastically degrades when the length of paths increases by a link failure. To get rid of this risk, it is necessary to design a network so that the maximum increase rate of the length of all paths is small even if a link fails. Therefore, the critical links whose failures significantly degrade the performance must be protected by rapid recovery so that the failures cannot be detected over the IP layer. The number of protected links should be small to restrict the investment cost for facilities and operational cost for Internet service providers. In this paper, we formulate this link protection problem and prove that the problem is NP-hard even if $k=3$. In addition, we propose a polynomial-time algorithm to solve the problem that the number of simultaneous link failures is restricted to one. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | network / quality of service / link failure / increase of path length / optimization / NP-hard / polynomial-time algorithm / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 463, NS2012-265, pp. 583-588, March 2013. | |
| Paper # | NS2012-265 | |
| Date of Issue | 2013-02-28 (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 | NS2012-265 |
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| Conference Information | |
| Committee | NS IN |
| Conference Date | 2013-03-07 - 2013-03-08 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okinawa Zanpamisaki Royal Hotel |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Paper Information | |
| Registration To | NS |
| Conference Code | 2013-03-NS-IN |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Method for Finding Links Protected against Increase of Path Length during Failures |
| Sub Title (in English) | |
| Keyword(1) | network |
| Keyword(2) | quality of service |
| Keyword(3) | link failure |
| Keyword(4) | increase of path length |
| Keyword(5) | optimization |
| Keyword(6) | NP-hard |
| Keyword(7) | polynomial-time algorithm |
| Keyword(8) | |
| 1st Author's Name | Kohei Nishida |
| 1st Author's Affiliation | Kwansei Gakuin University (Kwansei Gakuin Univ.) |
| 2nd Author's Name | Hiroyoshi Miwa |
| 2nd Author's Affiliation | Kwansei Gakuin University (Kwansei Gakuin Univ.) |
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| Speaker | Author-1 |
| Date Time | 2013-03-08 13:00:00 |
| Presentation Time | 20 minutes |
| Registration for | NS |
| Paper # | NS2012-265 |
| Volume (vol) | vol.112 |
| Number (no) | no.463 |
| Page | pp.583-588 |
| #Pages | 6 |
| Date of Issue | 2013-02-28 (NS) |
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