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Quantitative Comparison of the Error-Containment Capabilities of a Bus and a Star Topology in CAN Networks

Title
Quantitative Comparison of the Error-Containment Capabilities of a Bus and a Star Topology in CAN Networks
Type
Article in International Scientific Journal
Year
2011
Authors
Manuel Barranco
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
Julian Proenza
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
Journal
Vol. 58 No. 3
Pages: 802-813
ISSN: 0278-0046
Publisher: IEEE
Indexing
Scientific classification
FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering
CORDIS: Technological sciences > Engineering > Computer engineering
Other information
Authenticus ID: P-002-TTV
Abstract (EN): There has been an increasing interest in using star topologies in field-bus communications, e. g., in Time Triggered Protocol for SAE class C applications (TTP/C), FlexRay, or controller area network (CAN), due to increased fault resilience and potential error-containment advantages. In this context, an innovative CAN-compliant star topology, CANcentrate, has been developed, whose hub includes enhanced fault-treatment mechanisms. However, despite this interest toward stars, it is still necessary to quantify their real dependability benefits. For this purpose and for the particular case of CAN, this paper presents models for the dependability features of CAN and CANcentrate using Stochastic Activity Networks (SANs). It quantitatively compares their reliability and error-containment capabilities under permanent hardware faults. These models rely on assumptions that ensure that results are not biased toward CANcentrate, which, in some cases, is too detrimental for it. Thus, despite not reflecting the full CANcentrate potential, results quantitatively confirm the improvement of error-containment it achieves over CAN. Additionally, the way in which the nodes' ability to contain their own errors affects the relevance of using a star topology has been quantified. Although this paper refers to the case of CAN, conclusions regarding the justification of using a star topology depending on this ability can be extrapolated to other field-bus technologies.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 12
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