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14 th Euromicro Conference on Real-Time Systems (ECRTS'02)
Weakly Hard Real-time Constraints on Controller Area Network
Vienna, Austria
June 19-June 21
ISBN: 0-7695-1665-3
ASCII Text
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Ian Broster, Guillem Bernat, Alan Burns, "Weakly Hard Real-time Constraints on Controller Area Network," Real-Time Systems, Euromicro Conference on, pp. 134, 14 th Euromicro Conference on Real-Time Systems (ECRTS'02), 2002.
 
 
BibTex
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@article{ 10.1109/EMRTS.2002.1019193,
author = {Ian Broster and Guillem Bernat and Alan Burns},
title = {Weakly Hard Real-time Constraints on Controller Area Network},
journal ={Real-Time Systems, Euromicro Conference on},
volume = {0},
year = {2002},
issn = {1068-3070},
pages = {134},
doi = {http://doi.ieeecomputersociety.org/10.1109/EMRTS.2002.1019193},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - CONF
JO - Real-Time Systems, Euromicro Conference on
TI - Weakly Hard Real-time Constraints on Controller Area Network
SN - 1068-3070
SP
EP
A1 - Ian Broster,
A1 - Guillem Bernat,
A1 - Alan Burns,
PY - 2002
KW - null
VL - 0
JA - Real-Time Systems, Euromicro Conference on
ER -
 
Ian Broster, University of York
Guillem Bernat, University of York
Alan Burns, University of York
For priority based buses such as CAN, worst case response time analysis is able to determine whether messages always meet their deadlines. This can include system models with bounded network faults. However, the worst-case scenario (the critical instant) used by the analysis is extremely pessimistic compared to the rest of the invocations in the hyperperiod. We use weakly hard constraints to provide upper bounds on the maximum number of missed deadlines under fault conditions. By allowing some deadlines to be missed (around the critical instant) the weakly-hard schedulability of the system can be guaranteed at much higher levels of faults. This paper presents a response time based formulation that provides a guarantee on the weakly-hard schedulability of messages. Simulation results based on CAN and the Latest Send Time-CAN protocol show that because of the pessimism of the approach, in fact almost all messages meet their deadlines.
Citation:
Ian Broster, Guillem Bernat, Alan Burns, "Weakly Hard Real-time Constraints on Controller Area Network," ecrts, pp.134, 14 th Euromicro Conference on Real-Time Systems (ECRTS'02), 2002
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