面向智能汽车的Ethernet AVB网络设计与优化

doi:10.3901/JME.2019.06.166

机械工程学报 ›› 2019, Vol. 55 ›› Issue (6): 166-177.doi: 10.3901/JME.2019.06.166

面向智能汽车的Ethernet AVB网络设计与优化

王跃飞^1,2, 黄斌¹, 吴源¹, 郭中飞¹

1. 合肥工业大学机械工程学院合肥 230009;
2. 安全关键工业测控技术教育部工程研究中心合肥 230009

收稿日期:2018-02-05 修回日期:2018-11-13 出版日期:2019-03-20 发布日期:2019-03-20
通讯作者: 王跃飞(通信作者),男,1977年出生,博士,副教授,硕士研究生导师。主要研究方向为实时系统控制与优化、智能汽车与车联网技术、汽车电子控制系统与装备技术。E-mail:yuefeiw@hfut.edu.cn
作者简介:黄斌,男,1993年出生,硕士研究生。主要研究方向为车载网络与车联网技术。E-mail:472150250@qq.com
基金资助:
国家自然科学基金（61202096）和安徽省自然科学基金（1708085MF157）资助项目。

Design and Optimization of Ethernet AVB Network for Intelligent Vehicle

WANG Yuefei^1,2, HUANG Bin¹, WU Yuan¹, GUO Zhongfei¹

1. School of Mechanical Engineering, Hefei University of Technology, Hefei 230009;
2. Engineering Research Center of Safety Critical Industrial Measurement and Control Technology of Ministry of Education, Hefei 230009

Received:2018-02-05 Revised:2018-11-13 Online:2019-03-20 Published:2019-03-20

摘要/Abstract

摘要： 为确保车载Ethernet AVB网络的传输实时性，在分析智能汽车网络拓扑结构和消息特性基础上，引入预定流量类型，给出面向音视频流和实时控制类消息流混合传输的时间感知整形调度机制；推导出该机制下流预留（SR）类消息的最坏响应时间计算式；给出IEEE标准预留带宽参数配置方法导致网络不可调度的证明，并以超预留带宽最小为目标，以IEEE标准规定的最大预留带宽和SR类消息响应时间为约束，提出Ethernet AVB网络超预留带宽优化设计模型，给出求解该模型的OAPO和OBPO算法。在Vector CANoe中的试验结果表明：与IEEE标准中配置方法相比，所提出的方法不仅可以确保Ethernet AVB网络中各类消息传输的实时性，而且还能使网络预留带宽达到最优，进而更好地满足智能汽车网络高速实时的通信要求。

关键词: Ethernet AVB网络, 超预留带宽, 时间感知整形, 预定流量类型, 智能汽车

Abstract: To guarantee the real-time transmission of Ethernet AVB network, the scheduled traffic stream is introduced based on the analysis of the topology and message characteristics of intelligent vehicle network, and a time-aware shaper(TAS) for mixed transmission of audio/video and control message stream is presented. The calculation formula of worst response time is deduced for the stream reservation message under the TAS. The non-schedulable cases resulting from the reserved bandwidth configuration method in the IEEE standard are analyzed. Then, the reserved bandwidth configuration is formulated as a generalized optimization problem which strives to minimize the over-reservation bandwidth under the constraints on maximum reservation bandwidth specified in IEEE standard and response time of SR message. To solve the model, the algorithms called as OAPO and OBPO are also proposed. The final experimental results in Vector CANoe show that compared with IEEE configuration method, for the Ethernet AVB network, the proposed method can not only ensure the real-time of all messages, but also achieve the optimal reserved bandwidth. Therefore, it can meet the high-speed and real-time communication requirements of intelligent vehicles better.

Key words: Ethernet AVB network, intelligent vehicle, over-reserved bandwidth, scheduled traffic stream, time-aware shaper

中图分类号:

TN915

王跃飞, 黄斌, 吴源, 郭中飞. 面向智能汽车的Ethernet AVB网络设计与优化[J]. 机械工程学报, 2019, 55(6): 166-177.

WANG Yuefei, HUANG Bin, WU Yuan, GUO Zhongfei. Design and Optimization of Ethernet AVB Network for Intelligent Vehicle[J]. Journal of Mechanical Engineering, 2019, 55(6): 166-177.

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面向智能汽车的Ethernet AVB网络设计与优化

Design and Optimization of Ethernet AVB Network for Intelligent Vehicle

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