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| Presentation | 2009-05-21 16:00 A failure rate estimation considering the change in the number of equipment Hiroyuki Funakoshi, Tatsuya Matsukawa (NTT)  NS2009-17 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The authors have been insisted on the importance of reliability management for IP networks constructed of commercial equipments, and studied the management technique using the actual failure data. Failure rate, unavailability, and maintainability are the typical measures for the reliability management of telecommunication networks. The authors have established the unavailability estimation method considering the failure scale and social influence. Moreover, the authors have clarified that the service outage times have the mixed log-normal distribution and that the actions for repairs is related tothe number of mixtures. The average failure rate calculated from a month of failure data is often used. However, the accurate failure rate is not always obtained. It is because the number of users and equipments in telecommunication networks changes. In this paper, the authors propose the method for estimating the instantaneous failure rate by using the number of equipments and cumulative failures. And the strength of our proposal is shown over the analysis using actual field data. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | reliability / failure rate / number of equipments / cumulative failures / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 36, NS2009-17, pp. 1-6, May 2009. | |
| Paper # | NS2009-17 | |
| Date of Issue | 2009-05-14 (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 | NS2009-17 |
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| Conference Information | |
| Committee | NS |
| Conference Date | 2009-05-21 - 2009-05-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hiroshima City University (Hiroshima) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Advanced Protocol and Network Control (Application level routing, QoS and Path Control, P2P, P4P, SIP), Network System Architecture (Interface, Hardware, Software) |
| Paper Information | |
| Registration To | NS |
| Conference Code | 2009-05-NS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A failure rate estimation considering the change in the number of equipment |
| Sub Title (in English) | |
| Keyword(1) | reliability |
| Keyword(2) | failure rate |
| Keyword(3) | number of equipments |
| Keyword(4) | cumulative failures |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Hiroyuki Funakoshi |
| 1st Author's Affiliation | Nippon Telegraph and Telephon Corporation (NTT) |
| 2nd Author's Name | Tatsuya Matsukawa |
| 2nd Author's Affiliation | Nippon Telegraph and Telephon Corporation (NTT) |
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| Speaker | Author-1 |
| Date Time | 2009-05-21 16:00:00 |
| Presentation Time | 25 minutes |
| Registration for | NS |
| Paper # | NS2009-17 |
| Volume (vol) | vol.109 |
| Number (no) | no.36 |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2009-05-14 (NS) |
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