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Predictive Scheme for Mixed Transmission in time-sensitive networking

ZTE Communications 2022年第4期20卷 78-88页

作者： LI Zonghui YANG Siqi YU Jinghai HE Fei SHI Qingjiang School of Computer and Information Technology Beijing Jiaotong UniversityBeijing 100044China ZTE Corporation Shenzhen 518057China School of Software Tsinghua UniversityBeijing 100084China School of Software Engineering Tongji UniversityShanghai 201804China Shenzhen Research Institute of Big Data Shenzhen 518172China

time-sensitive networking(TSN)is an important research area for updating the infrastructure of industrial Internet of *** 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 *** paper systematically summarizes and analyzes the shortcomings of the current mixed transmission technologies of the bursty flows and the periodic *** conquer these shortages,we propose a predictive mixed-transmission scheme of the bursty flows and the periodic *** core idea is to use the predictability of timetriggered transmission of TSN to further reduce bandwidth loss of the previous mixed-transmission *** paper formalizes the probabilistic model of the predictive mixed transmission mechanism and proves that the proposed mecha⁃nism can effectively reduce the loss of ***,based on the formalized probabilistic model,we simulate the bandwidth loss of the proposed *** 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

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Routing and scheduling co-design for holistic software-defined deterministic network

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Fundamental Research 2024年第1期4卷 25-34页

作者： Jinglong Zhang Fengyuan Zhu Zeming Yang Cailian Chen Xiaohua Tian Xinping Guan School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

As a result of the growing complexity of industrial Internet applications,traditional hardware-based network designs are encountering challenges in terms of programmability and dynamic adaptability as they struggle to meet the real-time,high-reliability transmission requirements for the vast quantities of data generated in industrial *** paper proposes a holistic software-defined deterministic network(HSDDN)design *** solution uses a centralized controller to implement a comprehensive software definition,ranging from the network layer down to the physical *** the wireless access domain,we decouple the standard radio-frequency modules from baseband processing to realize a software-defined physical layer,which then allows us to adjust the data transmission cycles and tag the trigger rates to meet demand for low-power,high-concurrency *** the wired network domain,we integrate software-defined networking with time-sensitive networking and propose a coordinated design strategy to address routing and the deterministic scheduling *** define a set of constraints to ensure collaborative transmission of the periodic and aperiodic data *** guarantee load balancing across all paths and timeslots,we introduce the Jain’s fairness index as the optimization objective and then construct a nondeterministic polynomial-time(NP)-hard joint optimization ***,an algorithm called Tabu search for routing and scheduling with dual-stages(TSRS-DS)is *** experiments demonstrate the effectiveness of the proposed HSDDN architecture.

关键词： Deterministic networking Software-defined networking Software-defined physical layer time-sensitive networking Backscatter communication Routing and scheduling co-design

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