一种Hash散列地址过滤的车载AVB虚拟通信方法  

Vehicle mounted AVB virtual communication method with Hash address filtering

作　　者：徐晓林 秦宗光 赵毅栋 XU Xiaolin;QIN Zongguang;ZHAO Yidong(Zhengzhou University of Science and Technology,Zhengzhou 450064,China;Yutong Bus Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]郑州科技学院,郑州450064 [2]宇通客车股份有限公司,郑州450000

出　　处：《光通信技术》2022年第6期86-91,共6页Optical Communication Technology

基　　金：河南省高等学校重点科研项目计划(项目编号:23B510009)资助。

摘　　要：以太网音视频桥接(AVB)通信过程中涉及大量数据,每包AVB数据多达几千个字节,当无人驾驶车辆以域进行划分时,各域间系统通信由于AVB数据量巨大和传输速度快导致传递给决策层的数据庞大且处理效率极低,而实际上决策层仅需处理AVB中有效载荷数据。为确保决策层所需有效数据仅是每包AVB有效数据,采用Hash散列地址过滤算法和改进的滑动窗口算法来提取有效载荷数据,并通过一种虚拟通信和实体通信方法将剥离后的有效数据发送至决策层。该方法有效减少了决策层无效数据处理量,提高了有效数据处理效率并满足实时性要求。Audio video bridging(AVB) communication process involves a large amount of data,and each packet of AVB data can reach thousands of bytes.When unmanned vehicles are divided by the concept of domain,the communication between domain systems will cause the huge amount of datas transferred to the decision-making layer and the extremely low processing efficiency due to the huge amount of datas transmitted by AVB and the fast transmission speed,the actual decision-making layer only needs to process the payload datas in the AVB.In order to ensure that the effective datas required for decision-making layer are only the effective datas of each packet of AVB,design a Hash address filtering algorithms and improved sliding window algorithms to extract the payload datas,and use a virtual communication and physical communication method to strip the proposed effective the data is sent to the decision-making layer.This method reduce the amount of datas processing at the decision-making layer effectively,improved its datas processing efficiency,and meet its datas real-time processing requirements.

关 键 词：车载以太网音视频桥接 Hash散列地址过滤 改进滑动窗口 虚拟通信和实体通信 

分 类 号：TN91[电子电信—通信与信息系统] TP3[电子电信—信息与通信工程]