A new approach for time-triggered phase in the FTT-CAN protocol: a case study in an automotive system

Important researches have presented different approaches in the real-time embedded communication domain aiming to cover the growing demands of performance, predictability and reliability of emerging applications. Such requirements involve low latency, reduced jitter, time composability, fault-tolerance and finally, support for future extensions. In agreement, the FTT (Flexible Time-Triggered) model is an approach which aiming to provide flexibility on the timetriggered traffic together with timeliness, differently of others approaches. This paper present a new and enhanced FTT model to improve some drawbacks in the time-triggered message traffic and time-triggered task execution. Some experimental results has been performed using a FTT-CAN implementation over an embedded linux with RTAI extension