Interface-based rate analysis of embedded systems

Samarjit Chakraborty, Yanhong Liu, Nikolay Stoimenov, Lothar Thiele, Ernesto Wandeler

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

21 Scopus citations


Interface-based design is now considered to be one of the keys to tackling the increasing complexity of modern embedded systems. The central idea is that different components comprising such systems can be developed independently and a system designer can connect them together only if their interfaces match, without knowing the details of their internals. We use the concept of rate interfaces for compositional (correct-by-construction) design of embedded systems whose components communicate through data streams. Using the associated rate interface algebra, two components can be connected together if the output rate of one component is "compatible" with the input rate of the other component. We formalize this notion of compatibility and show that such an algebra is non-trivial because it has to accurately model the burstiness in the arrival rates of such data streams and the variability in their processing requirements. We discuss how rate interfaces simplify compositional design and at the same time help in functional and performance verification which would be difficult to address otherwise. Finally, we illustrate these advantages through a realistic case study involving a component-based design of a multiprocessor architecture running a picture-in-picture application.

Original languageEnglish
Title of host publicationProceedings of 27th IEEE International Real-Time Systems Symposium, RTSS 2006
Number of pages10
StatePublished - 2006
Externally publishedYes
Event27th IEEE International Real-Time Systems Symposium, RTSS 2006 - Rio de Janeiro, Brazil
Duration: 5 Dec 20068 Dec 2006

Publication series

NameProceedings - Real-Time Systems Symposium
ISSN (Print)1052-8725


Conference27th IEEE International Real-Time Systems Symposium, RTSS 2006
CityRio de Janeiro


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