Predictive Scheme for Mixed Transmission in Time-Sensitive Networking  

作　　者：LI Zonghui YANG Siqi YU Jinghai HE Fei SHI Qingjiang 

机构地区：[1]School of Computer and Information Technology,Beijing Jiaotong University,Beijing 100044,China [2]ZTE Corporation,Shenzhen 518057,China [3]School of Software,Tsinghua University,Beijing 100084,China [4]School of Software Engineering,Tongji University,Shanghai 201804,China [5]Shenzhen Research Institute of Big Data,Shenzhen 518172,China

出　　处：《ZTE Communications》2022年第4期78-88,共11页中兴通讯技术（英文版）

基　　金：sponsored in part by the National Key Research and Development Project under Grants Nos. 2018YFB1308601 and 2017YFE0119300;the National Natural Science Foundation of China under Grant No. 62002013;the Project funded by China Postdoctoral Science Foundation Grants Nos. 2019M660439 and 2020T130049;the Industry-University-Research Cooperation Fund of ZTE Corporation.

摘　　要：Time-sensitive networking(TSN)is an important research area for updating the infrastructure of industrial Internet of Things.As a product of the integration of the operation technology(OT)and the information technology(IT),it meets the real-time and deterministic nature of industrial control and is compatible with Ethernet to support the mixed transmission of industrial control data and Ethernet data.This paper systematically summarizes and analyzes the shortcomings of the current mixed transmission technologies of the bursty flows and the periodic flows.To conquer these shortages,we propose a predictive mixed-transmission scheme of the bursty flows and the periodic flows.The core idea is to use the predictability of timetriggered transmission of TSN to further reduce bandwidth loss of the previous mixed-transmission methods.This paper formalizes the probabilistic model of the predictive mixed transmission mechanism and proves that the proposed mecha⁃nism can effectively reduce the loss of bandwidth.Finally,based on the formalized probabilistic model,we simulate the bandwidth loss of the proposed mechanism.The results demonstrate that compared with the previous mixed-transmission method,the bandwidth loss of the pro⁃posed mechanism achieves a 79.48%reduction on average.

关 键 词：time-sensitive networking 802.1Qbv 802.1Qbu guard band strategy preemption strategy 

分 类 号：TP393.11[自动化与计算机技术—计算机应用技术]