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Optimizations of an Application-Level Protocol for Enhanced Dependability in FlexRay
Wenchao Li

Citation
Wenchao Li. "Optimizations of an Application-Level Protocol for Enhanced Dependability in FlexRay". Talk or presentation, 31, March, 2009.

Abstract
FlexRay is an automotive standard for high-speed and reliable communication that is being widely deployed for next generation cars. The protocol has powerful errordetection mechanisms, but its error-management scheme forces a corrupted frame to be dropped without any notification to the transmitter. In this paper, we analyze the feasibility of and propose an optimization approach for an application-level acknowledgement and retransmission scheme for which transmission time is allocated on top of an existing schedule. We formulate the problem as a Mixed Integer Linear Program. The optimization is comprised of two stages. The first stage optimizes a fault tolerance metric; the second improves scheduling by minimizing the latencies of the acknowledgment and retransmission messages. We demonstrate the effectiveness of our approach on a case study based on an experimental vehicle designed at General Motors.

Electronic downloads

Citation formats  
  • HTML
    Wenchao Li. <a
    href="http://chess.eecs.berkeley.edu/pubs/581.html"
    ><i>Optimizations of an Application-Level Protocol
    for Enhanced Dependability in FlexRay</i></a>,
    Talk or presentation,  31, March, 2009.
  • Plain text
    Wenchao Li. "Optimizations of an Application-Level
    Protocol for Enhanced Dependability in FlexRay". Talk
    or presentation,  31, March, 2009.
  • BibTeX
    @presentation{Li09_OptimizationsOfApplicationLevelProtocolForEnhancedDependability,
        author = {Wenchao Li},
        title = {Optimizations of an Application-Level Protocol for
                  Enhanced Dependability in FlexRay},
        day = {31},
        month = {March},
        year = {2009},
        abstract = {FlexRay is an automotive standard for high-speed
                  and reliable communication that is being widely
                  deployed for next generation cars. The protocol
                  has powerful errordetection mechanisms, but its
                  error-management scheme forces a corrupted frame
                  to be dropped without any notification to the
                  transmitter. In this paper, we analyze the
                  feasibility of and propose an optimization
                  approach for an application-level acknowledgement
                  and retransmission scheme for which transmission
                  time is allocated on top of an existing schedule.
                  We formulate the problem as a Mixed Integer Linear
                  Program. The optimization is comprised of two
                  stages. The first stage optimizes a fault
                  tolerance metric; the second improves scheduling
                  by minimizing the latencies of the acknowledgment
                  and retransmission messages. We demonstrate the
                  effectiveness of our approach on a case study
                  based on an experimental vehicle designed at
                  General Motors. },
        URL = {http://chess.eecs.berkeley.edu/pubs/581.html}
    }
    

Posted by Hiren Patel on 27 Apr 2009.
Groups: chess
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