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- Holtmann, Jörg, 1979, et al.
(författare)
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Early timing analysis based on scenario requirements and platform models
- 2022
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Ingår i: Software and Systems Modeling. - : Springer Science and Business Media LLC. - 1619-1366 .- 1619-1374. ; 21, s. 2171-2211
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Tidskriftsartikel (refereegranskat)abstract
- Distributed, software-intensive systems (e.g., in the automotive sector) must fulfill communication requirements under hard real-time constraints. The requirements have to be documented and validated carefully using a systematic requirements engineering (RE) approach, for example, by applying scenario-based requirements notations. The resources of the execution platforms and their properties (e.g., CPU frequency or bus throughput) induce effects on the timing behavior, which may lead to violations of the real-time requirements. Nowadays, the platform properties and their induced timing effects are verified against the real-time requirements by means of timing analysis techniques mostly implemented in commercial-off-the-shelf tools. However, such timing analyses are conducted in late development phases since they rely on artifacts produced during these phases (e.g., the platform-specific code). In order to enable early timing analyses already during RE, we extend a scenario-based requirements notation with allocation means to platform models and define operational semantics for the purpose of simulation-based, platform-aware timing analyses. We illustrate and evaluate the approach with an automotive software-intensive system.
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| 2. |
- Peraldi-Frati, M.-A., et al.
(författare)
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A timing model for specifying multi clock automotive systems: The timing augmented description language V2
- 2012
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Ingår i: Proceedings - 2012 IEEE 17th International Conference on Engineering of Complex Computer Systems, ICECCS 2012, Paris;18 July 2012 through20 July 2012. ; :Article number 06299218, s. 230-239
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Konferensbidrag (refereegranskat)abstract
- Precise timing constraint modeling and analysis is a key point for the correct development of automotive electronics. EAST-ADL and AUTOSAR has been adopted as standards in automotive industry. These standards have recently adopted TADL (Time Augmented Description Language), a timing model for expressing timing constraints. Its current use highlighted different issues, mainly concerning the integration of parameterized multi rate and multi-clock systems. This paper presents new extensions, aligned on AUTOSAR and EAST-ADL, to solve these issues: a support for symbolic timing expression including multi time base description and complex timing constraints. These extensions are applicable at different abstraction levels during design and enable precise modeling of the multi clock characteristics of distributed systems together with parameterized timing expressions. This work has been conducted in the ITEA TIMMO-2-USE project.
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