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Towards a mixed NoC/AFDX architecture for avionics applications

Abdallah, Laure and Ermont, Jérôme and Scharbarg, Jean-Luc and Fraboul, Christian Towards a mixed NoC/AFDX architecture for avionics applications. (2018) In: 13th International Workshop on Factory Communication Systems (WFCS 2017), 31 May 2017 - 2 June 2017 (Trondheim, Norway).

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Official URL: https://doi.org/10.1109/WFCS.2017.7991950


An heterogeneous network, where a switched-Ethernet backbone, as AFDX, interconnects several End Systems based on Network-On-Chip (NoC), is a promising candidate to build new avionics architecture. However, current avionics End System includes many functions, as performing a traffic shaping for each Virtual Link (VL) and scheduling the output frames in such a way the jitter on each VL is bounded. This paper describes how the NoC implements these functions in order to compute the worst-case traversal time (WCTT) of avionics frames on a NoC to reach the AFDX network. Besides, we illustrate the problem of guaranteeing a bounded jitter at the output of a NoC. We show that the existing mapping strategies present some limitations to reduce the congestion on the outgoing I/O flows (i.e. going from the NoC to the AFDX network) and so do not reduce the jitter on a given VL. We propose an extended mapping approach which considers the outgoing I/O flows. Experimental results on realistic avionics case studies show significant improvements of the jitter value.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to the IEEE (Institute of Electrical and Electronics Engineers). This paper is available at : https://ieeexplore.ieee.org/document/7991950 © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
HAL Id:hal-02001631
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
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Deposited On:14 Jan 2019 15:47

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