时间敏感网络中基于抢占式通道模型的资源调度算法研究  

Research on Resource Scheduling Algorithm Based on Preemptive Channel Model in Time-Sensitive Networks

作　　者：吴昭祥 李文凯 袁亚洲[1] 刘志新[1] WU Zhaoxiang;LI Wenkai;YUAN Yazhou;LIU Zhixin(School of Electrical Engineering,Yanshan University,Qinhuangdao 066004,China)

机构地区：[1]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《移动通信》2023年第8期67-73,97,共8页Mobile Communications

基　　金：国家重点研发计划“工业现场无线控制系统架构和设计方法”(2020YFB1708700);国家自然科学基金项目“分布式工业网络中适配业务传输需求的多域资源协同优化研究”(62273295);中央引导地方项目“业务需求驱动的多层级工业网络可靠接入与信息传输协同优化研究”(226Z0304G)。

摘　　要：时间敏感网络作为一种新型工业通信技术,能够为工业控制业务提供高可靠及确定性时延保障。针对工业场景中时间敏感网络为保障确定性时延而提供的循环排队转发机制,提出了一种满足同步流类型时间敏感流量零抖动需求的抢占式通道模型,通过调整循环排队机制中不同类型时间敏感流量的优先级,为同步流量提供抢占式通道,同时引入对周期流类型时间敏感流量的整流排序机制,来降低抢占式通道对于周期流的影响。对引入机制前后的时延变化进行了对比分析,并通过OMNET++实时仿真验证了所提出的抢占式通道模型的有效性。As a novel industrial communication technology,time-sensitive networks can offer high reliability and deterministic delay guarantee for industrial control services.For the cyclic queuing and forwarding mechanism to ensure the deterministic delay of TSNs in industrial scenarios,a preemptive channel model is proposed to meet the zero-jitter requirement of time-sensitive traffic of synchronous flow types.By adjusting the priorities of different types of time-sensitive traffic in the cyclic queuing mechanism,a preemptive channel is provided for synchronous traffic.Meanwhile,a rectification-sequencing mechanism is introduced for the time-sensitive traffic of periodic flow type to reduce the impact of preemptive channels on periodic flows.Via comparing and analyzing the delay changes after the introduction of the mechanism,the effectiveness of the proposed preemptive channel model is verified through OMNET++real-time simulation.

关 键 词：时间敏感网络 循环排队转发机制 抢占式通道模型 整流排序 

分 类 号：TN929.5[电子电信—通信与信息系统]