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Time-sensitive network traffic hierarchical scheduling method for industrial site

A time-sensitive, network traffic technology, applied in constraints-based CAD, electrical components, transmission systems, etc., can solve problems such as traffic scheduling disorder, and achieve the effect of improving throughput

Pending Publication Date: 2022-04-08
YANSHAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects of the existing technology, the present invention provides a time-sensitive network traffic hierarchical scheduling method for industrial sites, which solves the problem of low-priority traffic waiting for high-priority traffic to be queued due to packet loss; The problem of scheduling disorder

Method used

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  • Time-sensitive network traffic hierarchical scheduling method for industrial site
  • Time-sensitive network traffic hierarchical scheduling method for industrial site
  • Time-sensitive network traffic hierarchical scheduling method for industrial site

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Embodiment Construction

[0031] Below in conjunction with embodiment the present invention is described in further detail:

[0032] A time-sensitive network traffic hierarchical scheduling method for industrial sites, comprising the following steps:

[0033] S1, define the characteristic parameters of each flow in the network topology; define the physical symbols of the network topology and each flow, each physical symbol is: ε, S i ,v,r i ,T i , d i ,q a,b , δ, L i , f i,q,(a,b) , φ i,q,(a,b) ,λ i,a,b , t i , l i ,HP,d i，re ,t'i , L nw , n i，re ,w, t u ; Each physical symbol and its physical meaning are shown in the following table:

[0034]

[0035]

[0036] S2, establish the objective function; establish the objective function to maximize the throughput: in, Indicates the sum of the sizes of all successfully scheduled traffic; t u Indicates the end-to-end total delay of all traffic; and through the shadow queue method designed in S4 combined with the constraint optimiza...

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Abstract

The invention relates to the technical field of industrial Internet of Things time-sensitive networks, in particular to an industrial site-oriented time-sensitive network traffic hierarchical scheduling method, which comprises the following steps of: S1, defining each traffic characteristic parameter in a network topology; s2, establishing a target function; s3, designing a gate control list (GCL) by using a time-aware shaper (TAS), and specifying a traffic transmission rule through each constraint condition in a transmission process; s4, performing cache scheduling on the flow by using the shadow queue designed in the invention in the transmission process; s5, solving by using a Z3 solver to obtain a final optimization result; according to the shadow queue designed by the invention, the queuing delay of packet loss of high-priority TT flow is reduced; a priority inversion method is designed, so that the TSN can more flexibly deal with the transmission of emergency traffic; and the throughput of the whole system is improved.

Description

technical field [0001] The invention relates to the technical field of time-sensitive network of the industrial internet of things, in particular to a time-sensitive network traffic hierarchical scheduling method for industrial sites. 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 isolated industrial equipment to realize informatization and intelligentization of production. In order to meet the strict high-deterministic and low-latency transmission requirements of industrial field applications, the IEEE 802.1 working group proposed a series of standards and specifications for link layer enhancement mechanisms and traffic policies, mainly including clock synchronization, traffic scheduling, reliable transmission and centralized Network configuration, which extends standard Ethernet to Time Sensitive Networking (TSN), provi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L47/56H04L47/6275G06F30/20G06F111/04
Inventor 袁亚洲苏永于明帅刘志新马锴关新平
Owner YANSHAN UNIV
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