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Calibrating a Dependent Failure Model for Computing Reliabilities in Telecommunication Networks

Abstract : In this work, we propose a methodology for calibrating a dependent failure model to compute the reliability in a telecommunication network. We use the Marshall-Olkin (MO) copula model, which captures failures that arise simultaneously in groups of links. In practice, this model is difficult to calibrate because it requires the estimation of a number of parameters that is exponential in the number of links. We formulate an optimization problem for calibrating an MO copula model to attain given marginal failure probabilities for all links and the correlations between them. Using a geographic failure model, we calibrate various MO copula models using our methodology, we simulate them, and we benchmark the reliabilities thus obtained. Our experiments show that considering the simultaneous failures of small and connected subsets of links is the key to obtaining a good approximation of reliability, confirming what is suggested by the telecommunication literature.
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https://hal.inria.fr/hal-01423587
Contributor : Yassine Hadjadj Aoul <>
Submitted on : Friday, December 30, 2016 - 1:27:36 PM
Last modification on : Friday, January 8, 2021 - 3:12:37 AM

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Omar Matus, Javiera Barrera, Eduardo Moreno, Gerardo Rubino. Calibrating a Dependent Failure Model for Computing Reliabilities in Telecommunication Networks. WSC 2016 - Winter Simulation Conference, Dec 2016, Arlington, United States. ⟨10.1109/WSC.2016.7822115⟩. ⟨hal-01423587⟩

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