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Abstract: As flexRay communication protocol is extensively used in distributed real-time applications on vehicles, signal scheduling in flexRay network becomes a critical issue to ensure the safe and efficient operation of time-critical applications. In this study, we propose a rectangle bin packing optimization approach to schedule communication signals with timing constraints into the flexRay static segment at minimum bandwidth cost. The proposed approach, which is based on integer linear programming (ILP), supports both the slot assignment mechanisms provided by the latest version of the flexRay specification, namely, the single sender slot multiplexing, and multiple sender slot multiplexing mechanisms. Extensive experiments on a synthetic and an automotive X-by-wire system case study demonstrate that the proposed approach has a well optimized performance.

The paper addresses the scheduling of FlexRay Static Segment, and it presents an ILP based scheduling approach that considers multiple sender slot multiplexing in that segment. I have seen several proposals regarding FlexRay Static Segment, and many of them are based on some optimization technique, since ST scheduling is a combinatorial problem. But I believe that this proposal is an interesting one, since most of recent publications consider only single sender slot multiplexing.

一种解决FlexRay总线静态段信号调度问题的矩形装箱优化方法

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