Design of Avionics Network Architecture Under a Reliability Constraint

• Published in: IEEE transactions on aerospace and electronic systems Vol. 58; no. 3; pp. 2327 - 2338
• Main Authors: Khamvilai, Thanakorn, Mains, John B., Sutter, Louis, Syed, Aqib, Baufreton, Philippe, Neumann, Francois, Feron, Eric
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Aerospace electronics; Aircraft; Avionics; Computer architecture; Ethernet; Integrated modular avionics (IMA); Network reliability; networked system; Optimization; Redundancy; Redundant components; Reliability; Reliability aspects; Safety critical; signomial; Topology
• ISSN: 0018-9251; 1557-9603
• DOI: 10.1109/TAES.2021.3134750

Reliability is an important aspect of operating safety-critical applications of networked systems, such as in avionics. In order to ensure sufficient reliability, one approach is to apply redundancy. However, redundancy may be costly if the degree of redundancy is too high. This article proposes an optimization-based framework for guaranteeing the desired reliability of any graph-based networked system. It focuses on integrated modular avionics architecture, based on the use of minimally redundant components. This framework consists of two steps. The first is to compute the minimum number of components within the architecture, using a geometric program. The second is to determine the topology with the minimal number of connections between these components, using a signomial program. Finally, the method is illustrated on a small example network and a larger network of the A350 avionics architecture.