NDLI: On the quantification of sustainability and extensibility of FlexRay schedules

Content Provider	IEEE Xplore Digital Library
Author	Schneider, R. Goswami, D. Chakraborty, S. Bordoloi, U. Eles, P. Zebo Peng
Copyright Year	2011
Description	Author affiliation: Linkoeping University, Sweden (Bordoloi, U.; Eles, P.; Zebo Peng) \|\| TU Munich, Germany (Schneider, R.; Goswami, D.; Chakraborty, S.)
Abstract	FlexRay has emerged as the de-facto next generation in-vehicle communication protocol. Messages are scheduled incrementally on FlexRay according to the automotive design paradigm where new applications are added iteratively. On this account, the schedules must be (i) sustainable, i.e., when messages are added in later iterations, they must preserve deadline guarantees of existing messages and (ii) extensible, i.e., they must accommodate future messages without changes to existing schedules. Unfortunately, traditionally used metrics of sustainability and extensibility for timing and schedulability analysis are generic and can not be trivially adapted to FlexRay schedules. This is because of platform-specific properties of FlexRay like being a hybrid paradigm, where both time-triggered and event-triggered segments are used for communication. In this paper, we first introduce new notions of sustainability and extensibility for FlexRay that capture protocol-specific properties and then present novel metrics to quantify sustainable and extensible schedules. We demonstrate the applicability of our results with industrial-size case studies and show that our proposed metrics may be visually represented allowing easy interpretation by system designers in the automotive industry.
Starting Page	375
Ending Page	380
File Size	758780
Page Count	6
File Format	PDF
ISBN	9781450306362
ISSN	85644924
e-ISBN	9781450306362
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Association for Computing Machinery, Inc. (ACM)
Subject Keyword	Schedules Silicon Measurement Protocols Bismuth Real time systems Payloads Real-time systems Automotive FlexRay Scheduling
Content Type	Text
Resource Type	Article

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