• Jun 20, 2018 News! [CFP] 2018 the annual meeting of IJET Editorial Board, ICEDA 2018, will be held in Nha Trang, Vietnam during October 20-22, 2018.   [Click]
  • Aug 06, 2018 News! Vol.9, No.1- Vol.9, No.4 has been indexed by EI(Inspec)!   [Click]
  • Aug 16, 2018 News!Vol.10, No. 6 has been published with online version.   [Click]
General Information
Editor-in-chief
Prof. T. Hikmet Karakoc
Anadolu University, Faculty of Aeronautics and Astronautics, Turkey

IJET 2016 Vol.8(6): 439-443 ISSN: 1793-8236
DOI: 10.7763/IJET.2016.V8.929

Efficient Utilization of FlexRay Network Using Parameter Optimization Method

Y. X. Wang, Y. H. Xu, and Y. N. Xu
Abstract—FlexRay is a high rate of bus communication standard in-vehicle network system, which takes time division multiple access (TDMA) and flexible time division multiple access (FTDMA) media mechanism to transmit messages flexibly, efficiently and reliably. However, due to protocol constraints and multiple design objectives, it is not an easy task to design a FlexRay schedule. In this paper, to achieve more efficient use of FlexRay network, an algorithm to obtain the optimal length of static messages is proposed, and the messages which are longer than the optimal length are assigned to dynamic segment. Then, according to the important level of dynamic messages, a frame ID allocation scheme by using optimal scheduling algorithm of dynamic programming and multi-stage decision for dynamic messages is proposed. After analyzing the worst delay time of the static and dynamic frames, the dynamic segment length optimization algorithm which aimed at minimizing the worst delay time of messages is put forward. Finally, according to the results which are the application of the algorithms to the FlexRay-based vehicle chassis control system, the static slot utilization rate reached 86.5%, the length of dynamic segment which transmits aperiodic messages is reduced by 43.4 %.

Index Terms—FlexRay, frame ID allocation, network utilization, parameter optimization, worst delay time.

The authors are with the division of electronic and communication engineering of Yanbian University, Yanji, China (e-mail: 2014050258@ybu.edu.cn, xuyh@ybu.edu.cn, ynxu@ybu.edu.cn).

[PDF]

Cite: Y. X. Wang, Y. H. Xu, and Y. N. Xu, "Efficient Utilization of FlexRay Network Using Parameter Optimization Method," International Journal of Engineering and Technology vol. 8, no. 6, pp. 439-443, 2016.

Copyright © 2008-2017. International Journal of Engineering and Technology. All rights reserved. 
E-mail: ijet@vip.163.com