An Evaluation Method for the Effects of Countermeasures against Cascading Failures
| Project/Area Number |
25330117
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Information network
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| Research Institution | Tokyo City University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | 通信ネットワーク / 信頼性 / 品質 / アルゴリズム / グラフ理論 / 確率と統計 / カスケード故障 / 波及 / 通信量残存率 / カスケード故障発生率 / 通信量 / カスケード故障対策 / 数値実験 / 大規模ネットワーク / 通信ネットワーク構成 / 故障率 / 故障頻度 / 被災規模 / トラヒック |
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| Outline of Final Research Achievements |
I developped a new methodology to evaluate the effects of countermeasures for cascading failures on telecommunications networks. Numerical experiments show the results which are helpful to clarify the best-mix of countermeasures. The key idea of my methodoogy is to prepare a new evaluation mesure to express the total or partial traffic volumes after the occrrences of cascading failures. This is quite different from the existing measure expressing size of surviving block after cascading failures. I also clarify anther new mesure considering the frequency of occurrences of cascading failures. We tested verious types of countermeasures and found some interesting and useful facts. For example, Increasing capacities of equipments do not always reach the best countermeasure to reduce the damages of cascading failures. Ather results show that the policy to allocate equipments causes different frequency and magnetude of damages caused by cascading failures.
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Report
(5 results)
Research Products
(15 results)
