FlexRay is a high-speed communication protocol with high flexibility and reliability.To identify message optimization of FlexRay static segment, we employed a message optimization scheme based on scheduling model consisting of three steps.First, in order to improve the efficiency of message transmission, a signal packing scheme based on grouping and arrangement method is proposed.Then, to minimize the number of Frame ID (FID) in a FlexRay system, a message scheduling policy with a static slot can be reused by multiple frames.Finally, on the basis of previous steps, scheduling model of static messages frames is described.At the end of this paper, a vehicle chassis system based on FlexRay network is designed.This indicates that the scheduling model can reduce the FID number by 44%, cut down the busload of static by 0.3%, and increase the bandwidth utilization by 12%.
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