| Presentation | 2009-05-21 A failure rate estimation considering the change in the number of equipments Hiroyuki FUNAKOSHI, Tatsuya MATSUKAWA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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 to the 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. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | reliability / failure rate / number of equipments / cumulative failures |
| Paper # | NS2009-17 |
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| Conference Information | |
| Committee | NS |
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| Conference Date | 2009/5/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Network Systems(NS) |
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| Language | JPN |
| 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 equipments |
| Sub Title (in English) | |
| Keyword(1) | reliability |
| Keyword(2) | failure rate |
| Keyword(3) | number of equipments |
| Keyword(4) | cumulative failures |
| 1st Author's Name | Hiroyuki FUNAKOSHI |
| 1st Author's Affiliation | NTT Service Integration Laboratories() |
| 2nd Author's Name | Tatsuya MATSUKAWA |
| 2nd Author's Affiliation | NTT Service Integration Laboratories |
| Date | 2009-05-21 |
| Paper # | NS2009-17 |
| Volume (vol) | vol.109 |
| Number (no) | 36 |
| Page | pp.pp.- |
| #Pages | 6 |
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