Failure and Coverage Factors Based Markoff Models: A New Approach for Improving the Dependability Estimation in Complex Fault Tolerant Systems Exposed to SEUs

Ferreyra, P.; Viganotti, G.; Marques, Carlos Alberto; Velazco, Raoul; Ferreyra, R.T.

doi:10.1109/tns.2007.895548

Cited by 8 publications

(1 citation statement)

References 13 publications

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“…Both the error detection and system recovery mechanism are presented as part of the MTTR interval. Accurately determining both MTTF and MTTR for a real spacecraft component was investigated in [63]. By means of the MTTF, MTTR, and the fault model, a fault injection system was designed to study the resulting traffic flow of a DTN based on CGR algorithm under failure conditions.…”

Section: Fault Modelmentioning

confidence: 99%

Assessing Contact Graph Routing Performance and Reliability in Distributed Satellite Constellations

Fraire

Madoery

Burleigh

et al. 2017

Journal of Computer Networks and Communications

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Existing Internet protocols assume persistent end-to-end connectivity, which cannot be guaranteed in disruptive and high-latency space environments. To operate over these challenging networks, a store-carry-and-forward communication architecture called Delay/Disruption Tolerant Networking (DTN) has been proposed. This work provides the first examination of the performance and robustness of Contact Graph Routing (CGR) algorithm, the state-of-the-art routing scheme for space-based DTNs. To this end, after a thorough description of CGR, two appealing satellite constellations are proposed and evaluated by means of simulations. Indeed, the DtnSim simulator is introduced as another relevant contribution of this work. Results enabled the authors to identify existing CGR weaknesses and enhancement opportunities.

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Section: Fault Modelmentioning

confidence: 99%