WCRT Analysis of CAN Messages in Gateway-Integrated In-Vehicle Networks

In modern automobiles, gateways are commonly used to connect several subsystems of controller area networks (CANs) to achieve integrated architecture and distributed cross-bus functionalities. To analyze the real-time property of such in-vehicle networks, worst-case response time (WCRT) analysis for...

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Bibliographic Details
Published inIEEE transactions on vehicular technology Vol. 66; no. 11; pp. 9623 - 9637
Main Authors Guoqi Xie, Gang Zeng, Kurachi, Ryo, Takada, Hiroaki, Zhetao Li, Renfa Li, Keqin Li
Format Journal Article
LanguageEnglish
Published New York IEEE 01.11.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Automobiles
Automotive engineering
Calculus
Computer architecture
Computer networks
Computer science
Controller area network (CAN)
gateway
Gateways
In vehicle
in-vehicle networks
integrated architecture
Logic gates
Messages
Response time
State of the art
Subsystems
Time factors
Upper bound
worst case response time (WCRT)
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Summary:In modern automobiles, gateways are commonly used to connect several subsystems of controller area networks (CANs) to achieve integrated architecture and distributed cross-bus functionalities. To analyze the real-time property of such in-vehicle networks, worst-case response time (WCRT) analysis for gateway-integrated CAN messages has been studied recently. However, the WCRTs obtained are quite pessimistic. In this study, we examine in detail the various actual arriving orders of gateway messages and then propose an explorative WCRT computation method. It is proved that the obtained WCRT results are safe WCRT bounds. Experimental results for real message set demonstrate as much as 24% reduction of WCRT compared with those obtained using the state-of-the-art methods.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2017.2737035