Diagnostic décentralisé de systèmes à événements discrets : application aux réseaux de télécommunications

Yannick Pencolé 1
1 DREAM - Diagnosing, Recommending Actions and Modelling
Inria Rennes – Bretagne Atlantique , IRISA-D7 - GESTION DES DONNÉES ET DE LA CONNAISSANCE
Abstract : In this thesis, we present an approach for the monitoring and the
diagnosis of complex dynamic systems such as telecommunication networks. These systems are composed of a set of interconnected equipments. With the help of sensors, a supervisor is able to receive alarms from the system. The objective of the supervisor is to deal with these alarms in order to guess the possible states and the possible failures of the system.

The purpose of the presented approach is to provide a help for interpreting alarms and giving the possible failures that could have occurred on the system. The developped approach uses model-based diagnosis techniques. Given a behavioural model of the set of supervised components, this approach consists in efficently using this model in order to analyse the alarm stream on-line. We propose to represent diagnoses as compacted transition systems based on failure events (reduced transducers).

Because of the complexity and the distributed nature of supervised systems, our approach is based on the "divide and conquer" paradigm. Firstly, we compute a set of local diagnoses based on local behaviours. Secondly, the computation of the global diagnosis is based on a local diagnoses merging operation. A strategy for applying this merging operation was developped in order to be efficient.

This work has been done in the context of a French scientific project called MAGDA. Finally, a platform for the decentralised diagnosis of dynamic systems has been developped and has been used to validate our approach on telecommunication network examples: Transpac network and a SDH network.
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https://tel.archives-ouvertes.fr/tel-00003581
Contributor : Yannick Pencolé <>
Submitted on : Thursday, October 16, 2003 - 8:43:51 AM
Last modification on : Tuesday, June 18, 2019 - 3:14:07 PM
Long-term archiving on : Friday, April 2, 2010 - 7:40:18 PM

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  • HAL Id : tel-00003581, version 1

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Yannick Pencolé. Diagnostic décentralisé de systèmes à événements discrets : application aux réseaux de télécommunications. Interface homme-machine [cs.HC]. Université Rennes 1, 2002. Français. ⟨tel-00003581⟩

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