Modeling the SL-LET Paradigm in AUTOSAR Adaptive

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Davide Bellassai, Gerlando Sciangula, Claudio Scordino, Daniel Casini, Alessandro Biondi

Published: 01 Jan 2025, Last Modified: 23 Oct 2025DATE 2025EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: The AUTOSAR consortium proposed the AUTOSAR Adaptive standard to tackle the challenges introduced by the design of modern automotive systems. It consists of a service-oriented architecture (SoA) implemented in C++ and built on top of POSIX operating systems. However, unlike the previous AUTOSAR Classic specifications, this novel standard does not address non-functional requirements, including determinism, which is of key importance to guarantee the system's functional safety. This paper proposes a modeling extension to the AUTOSAR Adaptive standard aiming at guaranteeing a deterministic execution by leveraging the System-Level Logical Execution Time (SL-LET) paradigm, already used in the context of AUTOSAR Classic. A prototype implementation is also proposed, which is used to experimentally corroborate the feasibility of the proposed model extension with an evaluation based on a realistic automotive application built on the official AUTOSAR Adaptive Platform Demonstrator (APD).