A Diversity-Based Approach for Communication Integrity in Critical Embedded Systems

Amira Zammali (1) , Agnan de Bonneval (1) , Yves Crouzet (1)

1 LAAS-TSF - Équipe Tolérance aux fautes et Sûreté de Fonctionnement informatique

We present, in this paper, a fault-tolerant approach to cope with accidental communication data corruption in critical embedded systems. One of the classical integrity approaches is the redundancy-based approach that consists particularly in replicating the message and sending all copies via the same communication channel consecutively or sending them via repli-cated communication channels. Yet, such approach is vulnerable to some cases of Common-Mode Failure. So, we propose to diversify the copies to be sent by diversifying either the error detection function (which generate the check bits) or the data payload. This paper focus on the first proposal by presenting experiments and results to validate its effectiveness. Besides, it describes basic theoretical concepts of the second proposal. Our case study is the Flight Control System (FCS). Yet, our approach could be deployed in other systems for which we describe the key properties.

Mots clés: fault tolerance; diversity; communication integrity; critical embedded systems; flight control system

Domaines: Systèmes embarqués; Réseaux et télécommunications [cs.NI]; Performance et fiabilité [cs.PF]; Systèmes et contrôle [cs.SY]

Amira Zammali, Agnan de Bonneval, Yves Crouzet. A Diversity-Based Approach for Communication Integrity in Critical Embedded Systems. 2015 IEEE 16th International Symposium on High Assurance Systems Engineering (HASE), Jan 2015, Daytona Beach Shores, United States. pp.215-222, ⟨10.1109/HASE.2015.39⟩. ⟨hal-01780202⟩