Introduction to unmanned spacecraft on-board communications: evolution of timeliness needs
Proceeings of the 2nd International Workshop on Worst-Case Traversal Time
Response time analysis for static priority based SpaceWire networks
Proceeings of the 2nd International Workshop on Worst-Case Traversal Time
NoC contention analysis using a branch-and-prune algorithm
ACM Transactions on Embedded Computing Systems (TECS) - Special Issue on Design Challenges for Many-Core Processors, Special Section on ESTIMedia'13 and Regular Papers
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Space Wire is a standard of on-board networks for satellites promoted by the ESA. As the ESA plans to use Space Wire as the sole network for both critical and non-critical traffics, network designers need tools to check that all the critical messages meet their deadlines. We previously proposed two such tools to compute an upper-bound on the worst-case end-to-end delay of a packet traversing a Space Wire network. The main contribution of this paper is the comparison of those two methods on a network configuration provided by Thales Alenia Space that is representative of next generation large satellites. The goal is to identify the key parameters that affect the bounds computed by the methods. We then conduct a sensitivity analysis on simpler network configurations to study the impact of those parameters on the methods and determine which method works better in different situations.