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A scheduling algorithm for reducing FlexRay message response time using empty minislots in dynamic segment

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3 Author(s)
Kiejin Park ; Div. of Ind. & Inf. Syst. Eng., Ajou Univ., Suwon, South Korea ; Minkoo Kang ; Bongjun Kim

FlexRay communication protocol that is suggested to guarantee exact operation of in-vehicle subsystem such as x-by-wire application has emerged as de-facto standard. However, there are only a few researches about response time analysis and timing performance verification for FlexRay. In this paper, to reduce message response time of FlexRay, a scheduling algorithm that long static message is assigned to dynamic segment is presented. SAE benchmark data is used for performance evaluation of proposed algorithm. Through the evaluation, we show that network utilization in all transmission speed is reduced, and also in lower transmission speed, it is reduced much more. And also, the worst-case response time of message frames that are reassigned from static segment into dynamic segment is reduced.

Published in:

Consumer Electronics (ICCE), 2010 Digest of Technical Papers International Conference on

Date of Conference:

9-13 Jan. 2010