Analyse de Flux de Trames AFDX en Réception et Méthode d’Optimisation Mémoire

Abstract : The rise of AFDX networks as a communication infrastructure between on-board equipment of civil aircraft motivates many research projects to reduce communication delays while guaranteeing a high level of determination and quality of service. This thesis deals with the effect of the back-ot-back frame reception on the reception End System, in particular, on the internal buffer, in order to guarantee a non-loss of frames and optimal memory dimensioning. A worst-case modeling of the frame flow is carried out according to a first pessimistic method, based on a periodic frame flow. Then a more optimistic method is presented based on the reception intervals and an iterative frame placement. A probabilistic study implements Gaussian distributions to evaluate the occurrence probabilities of the worst back-to-back frames and provides an illumination that opens a discussion on the relevance of not considering the worst-case modeling to size the reception buffer. Additional memory gain can be achieved by implementing LZW lossless compression.
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Yohan Baga. Analyse de Flux de Trames AFDX en Réception et Méthode d’Optimisation Mémoire. Traitement du signal et de l'image [eess.SP]. Université de Cergy Pontoise, 2018. Français. ⟨NNT : 2018CERG0957⟩. ⟨tel-02283983⟩

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