Paper Info
Title
Probabilistic scheduling of the FlexRay dynamic segment
Abstract
FlexRay is a communication system for automotive applications with high determinism, bandwidth, synchronization and reliability requirements, being a de facto standard for intra-vehicular communications in high-end vehicles. FlexRay media access control is based on a fixed-size communication cycle structured as a sequence of four segments: a Static Segment, a Dynamic Segment and two control segments. While the Static Segment is mainly used for transmissions related to time-triggered applications with hard real-time constraints, the Dynamic Segment is designed to accommodate transmissions from event-triggered applications with hard or soft real-time constraints, or from applications without real-time constraints. Some research works do consider a system model where message streams are sporadic with hard real-time constraints. To the best of our knowledge, there isn't in the literature research works addressing specifically the problems related to the transmission of messages from aperiodic streams in DN. In this work, we are proposing an arbitration mechanism to schedule aperiodic message streams on DN that avoids the indefinite postponement of low-priority streams. The proposed mechanism uses a probabilistic approach that takes advantage of the flexibility of aperiodic message streams regarding real-time constraints.
Year
DOI
Venue
2014
10.1109/INDIN.2014.6945508
Industrial Informatics
Keywords
Field
DocType
access protocols,automobiles,on-board communications,probability,scheduling,synchronisation,telecommunication control,DN,FlexRay dynamic segment,FlexRay media access control,aperiodic message streams,arbitration mechanism,automotive applications,communication cycle,communication system,control segments,high-end vehicles,intravehicular communications,probabilistic scheduling,static segment,system model
FlexRay,De facto standard,Media access control,Synchronization,Computer network,Communications system,Real-time computing,Engineering,Probabilistic logic,Aperiodic graph,System model
Conference
ISSN
Citations 
PageRank 
1935-4576
0
0.34
References 
Authors
10
2
Name
Order
Citations
PageRank
Rodrigo Lange1142.69
Romulo Silva de Oliveira2194.00