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CLC number: TP393

On-line Access: 2016-04-05

Received: 2015-07-21

Revision Accepted: 2015-12-14

Crosschecked: 2016-02-26

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Citations:  Bibtex RefMan EndNote GB/T7714


Rui Zhao


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Frontiers of Information Technology & Electronic Engineering  2016 Vol.17 No.4 P.375-388


A rectangle bin packing optimization approach to the signal scheduling problem in the FlexRay static segment

Author(s):  Rui Zhao, Gui-he Qin, Jia-qiao Liu

Affiliation(s):  Department of Computer Science and Technology, Jilin University, Changchun 130000, China; more

Corresponding email(s):   zhaor1022@163.com, qingh@jlu.edu.cn, jiaqiao.liu@faw-vw.com

Key Words:  FlexRay, Real-time applications, Rectangle bin packing, Schedule optimization, Slot multiplexing

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Rui Zhao, Gui-he Qin, Jia-qiao Liu. A rectangle bin packing optimization approach to the signal scheduling problem in the FlexRay static segment[J]. Frontiers of Information Technology & Electronic Engineering, 2016, 17(4): 375-388.

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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.




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