航空电子AFDX与AVB传输实时性抗干扰对比

doi:10.13700/j.bh.1001-5965.2016.0908

北京航空航天大学学报 ›› 2017, Vol. 43 ›› Issue (12): 2359-2369.doi: 10.13700/j.bh.1001-5965.2016.0908

航空电子AFDX与AVB传输实时性抗干扰对比

赵琳, 何锋, 熊华钢

北京航空航天大学电子信息工程学院, 北京 100083

收稿日期:2016-12-01 修回日期:2017-02-24 出版日期:2017-12-20 发布日期:2017-05-10
通讯作者: 何锋 E-mail:robinleo@buaa.edu.cn
作者简介:赵琳,女,博士研究生。主要研究方向:实时网络;何锋,男,博士,讲师。主要研究方向:航空电子综合、实时调度、实时网络;熊华钢,男,博士,教授,博士生导师。主要研究方向:航空电子综合、机载网络。
基金资助:
国家自然科学基金（61301086）；中央高校基本科研业务费专项资金（YWF-15-GJSYS-055）

Comparison of real-time anti-jamming transmission for avionics AFDX and AVB

ZHAO Lin, HE Feng, XIONG Huagang

School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

Received:2016-12-01 Revised:2017-02-24 Online:2017-12-20 Published:2017-05-10
Supported by:
National Natural Science Foundation of China (61301086); the Fundamental Research Funds for the Central Universities (YWF-15 -GJSYS-055)

摘要/Abstract

摘要： 为满足未来航电系统音视频信息传输的需求，考虑车载嵌入式系统的候选实时多媒体网络AVB在航电环境中的应用，并对AVB与AFDX的传输进行了对比研究。首先构建AVB与AFDX标准对比；其次提出基于网络演算的AVB和AFDX端到端延迟计算方法；然后通过定义不同的消息传输场景，采用理论方法分析消息传输实时性的干扰要素；最后利用仿真方法予以验证。在典型1 000条虚拟链路的组网规模下，结果显示：AFDX高优先级流量的端到端延迟优于AVB，对于低优先级流量端到端延迟，则AVB和AFDX各有优劣；但受突发的流量影响，在增加50条各0.22 Mbit/s带宽的低优先级流量干扰情况下，高优先级流量平均端到端延迟的变化率在AVB中为0.25%，在AFDX中为0.38%；在增加50条各0.22 Mbit/s带宽的高优先级流量干扰情况下，低优先级流量平均端到端延迟的变化率在AVB中为5.17%，在AFDX中为10.25%。结果表明：时间敏感消息在AVB网络中传输实时性的抗干扰能力优于AFDX。

关键词: 航空电子网络, 音视频桥接(AVB)网络, 航空电子全双工交换以太网(AFDX), 实时性, 抗干扰

Abstract: AVB is considered to meet the demands of audio video transmission in future avionics system, which is a real-time multimedia network and has become a candidate for in-vehicle embedded systems. Comparative study on AFDX and AVB is implemented. First, standards of AVB and AFDX are compared. Second, the method for end-to-end delay in AVB and AFDX is discussed by network calculus. Then the elements interfering real-time transmission are analyzed depending on different transmission scenarios. Conclusions are verified by simulation. In typical networking with 1 000 virtual links, the results show that the end-to-end delay of high priority traffic in AFDX is smaller than that in AVB; the advantage and disadvantage of end-to-end delay for low priority traffic exist in both AVB and AFDX. But influenced by the burst 50 low priority streams (each with 0.22 Mbit/s bandwidth), the variation rate of average end-to-end delay for high priority traffic is 0.25% in AVB and 0.38% in AFDX; influenced by the burst 50 high priority streams (each with 0.22 Mbit/s bandwidth), the variation rate of low priority traffic is 5.17% in AVB and 10.25% in AFDX. Real-time anti-jamming transmission of time-sensitive information in AVB is superior to AFDX.

Key words: avionics network, audio/video bridging (AVB) network, avionics full-duplex switched Ethernet (AFDX), real-time, anti-jamming

中图分类号:

V247
TP393

赵琳, 何锋, 熊华钢. 航空电子AFDX与AVB传输实时性抗干扰对比[J]. 北京航空航天大学学报, 2017, 43(12): 2359-2369.

ZHAO Lin, HE Feng, XIONG Huagang. Comparison of real-time anti-jamming transmission for avionics AFDX and AVB[J]. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2017, 43(12): 2359-2369.

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航空电子AFDX与AVB传输实时性抗干扰对比

Comparison of real-time anti-jamming transmission for avionics AFDX and AVB

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