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PRDC
2008
IEEE

VTV - A Voting Strategy for Real-Time Systems

14 years 6 months ago
VTV - A Voting Strategy for Real-Time Systems
Real-time applications typically have to satisfy high dependability requirements and require fault tolerance in both value and time domains. A widely used approach to ensure fault tolerance in dependable systems is the N-modular redundancy (NMR) which typically uses a majority voting mechanism. However, NMR primarily focuses on producing the correct value, without taking into account the time dimension. In this paper, we propose a new approach, Voting on Time and Value (VTV), applicable to real-time systems, which extends the modular redundancy approach by explicitly considering both value and timing failures, such that correct value is produced at a correct time, under specified assumptions. We illustrate our voting approach by instantiating it in the context of the well-known triple modular redundancy (TMR) approach. Further, we present a generalized version targeting NMR that enables a high degree of customization from the user perspective.
Hüseyin Aysan, Sasikumar Punnekkat, Radu Dobr
Added 01 Jun 2010
Updated 01 Jun 2010
Type Conference
Year 2008
Where PRDC
Authors Hüseyin Aysan, Sasikumar Punnekkat, Radu Dobrin
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