Schedulability Analysis of CAN with Non-abortable Transmission Requests
Identifieur interne : 002190 ( Main/Merge ); précédent : 002189; suivant : 002191Schedulability Analysis of CAN with Non-abortable Transmission Requests
Auteurs : Dawood Khan [France] ; Robert Davis [Royaume-Uni] ; Nicolas Navet [France]Source :
English descriptors
Abstract
The analysis of the real-time properties of an embedded communication system relies on finding upper bounds on the Worst-Case Response Time (WCRT) of the messages that are exchanged among the nodes on the network. The classical WCRT analysis of Controller Area Network (CAN) implicitly assumes that at any given time, each node is able to enter its highest priority ready message into arbitration. However, in reality, CAN controllers may have some characteristics, such as non-abortable transmit buffers, which may break this assumption. This paper provides analysis for networks that contain nodes with non-abortable transmit buffers, as well as nodes that meet the requirements of the classical analysis. The impact on message WCRTs due to a limited number of transmission buffers with non-abortable behaviour is examined via two case-studies.
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<desc><address><addrLine>24-30 rue Lionnois, BP 60120, 54 003 NANCY cedex, France</addrLine>
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</address>
</desc>
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<date type="end">2011-12-31</date>
<desc><address><addrLine>91 avenue de la Libération, BP 454, 54001 Nancy cedex</addrLine>
<country key="FR"></country>
</address>
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</tutelle>
<tutelle active="#struct-300293" type="indirect"><org type="institution" xml:id="struct-300293" status="OLD"><orgName>Institut National Polytechnique de Lorraine</orgName>
<orgName type="acronym">INPL</orgName>
<date type="end">2011-12-31</date>
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</address>
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<tutelle active="#struct-2496" type="direct"><org type="laboratory" xml:id="struct-2496" status="OLD"><orgName>INRIA Lorraine</orgName>
<desc><address><addrLine>615 rue du Jardin Botanique 54600 Villers-lès-Nancy</addrLine>
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</address>
<ref type="url">http://www.inria.fr/centre-de-recherche-inria/nancy-grand-est</ref>
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<country>France</country>
<placeName><settlement type="city">Nancy</settlement>
<region type="region" nuts="2">Grand Est</region>
<region type="old region" nuts="2">Lorraine (région)</region>
</placeName>
<orgName type="university">Université Nancy 2</orgName>
<orgName type="institution" wicri:auto="newGroup">Université de Lorraine</orgName>
<placeName><settlement type="city">Nancy</settlement>
<region type="region" nuts="2">Grand Est</region>
<region type="old region" nuts="2">Lorraine (région)</region>
</placeName>
<orgName type="university">Institut national polytechnique de Lorraine</orgName>
<orgName type="institution" wicri:auto="newGroup">Université de Lorraine</orgName>
</affiliation>
</author>
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<profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>Controller area network</term>
<term>Schedulability</term>
<term>response time analysis</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">The analysis of the real-time properties of an embedded communication system relies on finding upper bounds on the Worst-Case Response Time (WCRT) of the messages that are exchanged among the nodes on the network. The classical WCRT analysis of Controller Area Network (CAN) implicitly assumes that at any given time, each node is able to enter its highest priority ready message into arbitration. However, in reality, CAN controllers may have some characteristics, such as non-abortable transmit buffers, which may break this assumption. This paper provides analysis for networks that contain nodes with non-abortable transmit buffers, as well as nodes that meet the requirements of the classical analysis. The impact on message WCRTs due to a limited number of transmission buffers with non-abortable behaviour is examined via two case-studies.</div>
</front>
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