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Journal Articles ACM SIGBED Review Year : 2011

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

Abstract

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 evaluating worst- case end-to-end delays. However, we first have to model SpaceWire components through the definition of service curves. In this paper, we propose a new Network Calculus element that we call the Wormhole Section. This element allows us to better model a wormhole network than the usual multiplexer and demultiplexer elements used in the context of usual Store-and-Forward networks.
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Dates and versions

hal-04312206 , version 1 (28-11-2023)

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Thomas Ferrandiz, Fabrice Frances, Christian Fraboul. Using Network Calculus to compute end-to-end delays in SpaceWire networks. ACM SIGBED Review, 2011, 8 (3), pp.44-47. ⟨10.1145/2038617.2038627⟩. ⟨hal-04312206⟩
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