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Ferrandiz, Thomas

Last name
Ferrandiz
First name
Thomas
Country
-
  • Maîtrise des latences de communication dans les réseaux bord SpaceWire

    SpaceWire est un standard de réseau embarqué promu par l'Agence Spatiale Européenne qui envisage de l'utiliser comme réseau bord unique dans ses futures satellites. SpaceWire utilise un mécanisme de routage Wormhole pour réduire la consommation mémoire des routeurs et les coûts associés. Cependant, le routage Wormhole peut engendrer des blocages en cascade dans les routeurs et, par conséquent, d'importantes variations des délais de livraison des paquets.Comme le réseau doit être partagé par d...

    Worst-case end-to-end delays evaluation for SpaceWire networks

    SpaceWire is a standard for on-board satellite networks chosen by the ESA as the basis for multiplexing payload and control traffic on future data-handling architectures. However, network designers need tools to ensure that the network is able to deliver critical messages on time. Current research fails to address this needs for SpaceWire networks. On one hand, many papers only seek to determine probabilistic results for end-to-end delays on Wormhole networks like SpaceWire. This does not pro...

    Using Network Calculus to compute end-to-end delays in SpaceWire networks

    The SpaceWire network standard is promoted by the ESA and is scheduled to be used as the sole on-board network for future satellites. This network uses a wormhole routing mechanism that can lead to packet blocking in routers and consequently to variable end-to-end delays. As the network will be shared by real-time and non real- time traffic, network designers require a tool to check that temporal constraints are verified for all the critical messages. Network Calculus can be used for evaluati...

    An enhanced worst-case end-to-end evaluation method for SpaceWire networks

    The SpaceWire network is scheduled to be used as the sole on-board network for future ESA satellites. However, at the moment, network designers do not have tools to ensure that critical temporal deadlines are met when using best-effort wormhole networks like SpaceWire. In a previous paper, we have presented a first method to compute an upper-bound on the worst-case end-to-end delay of flows traversing such networks. However, its scope was limited by restrictive assumptions on the traffic patt...

    Modeling SpaceWire networks with network calculus

    The SpaceWire network standard is promoted by the ESA and is scheduled to be used as the sole on-board network for future satellites. This network uses a wormhole routing mechanism that can lead to packet blocking in routers and consequently to variable end-to-end delays. As the network will be shared by real-time and non real-time traffic, network designers require a tool to check that temporal constraints are verified for all the critical messages. Network Calculus can be used for evaluatin...

    A method of computation for worst-case delay analysis on SpaceWire networks

    SpaceWire is a standard for on-board satellite networks chosen by the ESA as the basis for future data-handling architectures. However, network designers need tools to ensure that the network is able to deliver critical messages on time. Current research only seek to determine probabilistic results for end-to-end delays on Wormhole networks like SpaceWire. This does not provide sufficient guarantee for critical traffic. Thus, in this paper, we propose a method to compute an upper-bound on the...
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