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Response time analysis for static priority based SpaceWire networks

Publication Type:

Conference/Workshop Paper


2nd International Workshop on Worst-Case Traversal Time (WCTT12)




The SpaceWire network standard is used in spacecraft communications and has been selected for future ESA satellites. In order to guarantee the safety and reliability of onboard systems, the designers have to make sure that all critical timing constraints are satisfied. The SpaceWire network is a wormhole based network which makes its timing analysis significantly complex. Some methods for computing upper-bounds of end-to-end delays of certain wormhole network models have been developed. However, those models require some explicit assumptions and dedicated real-time mechanisms which cannot be supported by the current SpaceWire networks. Moreover, some work has proposed analysis approaches for SpaceWire networks assuming the Round-Robin arbitration scheme only. In this paper, we focus on the priority based arbitration scheme instead and we propose a worst-case response time analysis to evaluate the end-to-end delays of traffic transmissions in SpaceWire networks. The corresponding proofs to our analysis are presented along with a case study.


author = {Meng Liu and Moris Behnam and Thomas Nolte and Luis Almeida},
title = {Response time analysis for static priority based SpaceWire networks},
month = {December},
year = {2012},
booktitle = {2nd International Workshop on Worst-Case Traversal Time (WCTT12)},
publisher = {ACM},
url = {}