An effective multiple-level fault-tolerant framework for FlexRay network systems

In this paper, we propose an effective multiple-level fault-tolerant framework for safety-critical FlexRay network systems. The proposed framework demonstrates how to employ the backup nodes, mirrored tasks and task migration to sustain the operation of system when ECUs fail. Furthermore, we propose the reliability models for the analysis of fault-tolerant FlexRay network systems in early design phase. Thus the design iteration due to insufficient system reliability can be reduced.