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A Hybrid Traffic Scheduling Method for Time-Sensitive Networks

A technology of network mixing and traffic scheduling, applied in transmission systems, electrical components, etc., can solve problems such as best-effort transmission traffic interference and mixed traffic transmission effects that cannot meet the expected standards, so as to improve scheduling performance, reduce traffic delay, and reduce Bandwidth Wasted Effects

Active Publication Date: 2022-03-11
YANSHAN UNIV
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Problems solved by technology

[0003] At present, TSN-related research work focuses on time-sensitive traffic (TT traffic), which sacrifices the delay of non-TT traffic too much, and audio and video traffic (AVB traffic) that also has relatively strict delay requirements cannot arrive within the deadline, and There is some interference in the best-effort transmission traffic (BE traffic) in the network, so that the transmission effect of the mixed traffic cannot meet the expected standard

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  • A Hybrid Traffic Scheduling Method for Time-Sensitive Networks
  • A Hybrid Traffic Scheduling Method for Time-Sensitive Networks
  • A Hybrid Traffic Scheduling Method for Time-Sensitive Networks

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Embodiment Construction

[0033] Below in conjunction with embodiment the present invention is described in further detail:

[0034] figure 1 It is a flow chart of the mixed traffic joint routing and scheduling method in the present invention, which can be applied to the on-site topology model, and the mixed traffic transmission process follows figure 2 The channel transmission mode, the scheduling method satisfies image 3 Hybrid traffic scheduling mechanism. The steps included in the method are described in detail below.

[0035] Step 1. Define the characteristic parameters of each data frame in the network topology. The traffic in the traffic set is represented by a six-tuple , which respectively represent the source node, target node, transmission cycle, and deadline , transmission queue ID, data frame length. Wherein, each flow satisfies p≤d.

[0036] Step 2, according to the IEEE802.1Qbv standard, use the time-aware shaper (TAS) to design the gate control list (GCL) to distinguish and proce...

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Abstract

The invention discloses a time-sensitive network mixed traffic scheduling method, which belongs to the technical field of time-sensitive network of the industrial Internet of Things. First, the characteristic parameters of each data frame of the network topology are defined, and then a gate control list (GCL) is designed by using a time-aware shaper (TAS) Differentiate and process TT traffic and non-TT traffic, determine the priority of each queue traffic and reorder the queue traffic during the transmission process. On the basis of the gate control list, the AVB and BE traffic adopts the fuzzy control-based limit preemption scheduling method. The present invention guarantees that the TT traffic with the highest priority on site is transmitted in real time, reduces the delay of AVB traffic, ensures the quality of audio and video transmission, and reduces the bandwidth waste caused by AVB preemption to a certain extent, improves scheduling performance, and solves mixed traffic Scheduling problem for common transmissions.

Description

technical field [0001] The invention relates to the technical field of time-sensitive networks of the Industrial Internet of Things, in particular to a time-sensitive network mixed flow scheduling method. Background technique [0002] In recent years, the Industrial Internet of Things (IIoT) has gradually changed the traditional on-site production and manufacturing methods, allowing data exchange between industrial equipment, real-time monitoring of the on-site environment through high-precision sensors, and realizing informatization and intelligence of production. In order to meet the strict requirements of real-time transmission in industrial field applications, the IEEE 802.1 working group developed a general real-time Ethernet standard, namely IEEE 802.1 Time-Sensitive Networking (TSN) standard, based on clock synchronization, traffic shaping, data frame preemption, centralized Network configuration that seeks to provide deterministic Ethernet functionality. [0003] At...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L47/2416H04L47/2483H04L47/6275
CPCH04L47/2416H04L47/245H04L47/2483H04L47/6275
Inventor 袁亚洲曹旭陈彩莲杨博关新平
Owner YANSHAN UNIV
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