Software definable real-time transmission mechanism

Abstract

The invention discloses a software definable real-time transmission mechanism which comprises the steps that (1) a defined network is composed of an application layer, a control layer and a data layer, and the application layer comprises a network state management module, a scheduling module, a slice construction module and a configuration management module; 2) the network state management modulemaintains a network topology, a network state and network node information; and 3) the slice construction module divides the service flow into a time-sensitive network service flow and a common network service flow according to the service quality requirement of the service flow, a network slice is established and the configuration of the network slice comprises priority configuration of a transmission path, a forwarding queue and a switching node; 4) a scheduling module identifies service quality requirements of different flows, and searches bandwidths required by corresponding network slicesto determine whether to accept the flows to schedule the flows of the different flows; and 5) according to a result returned by the network slice structure, the network slice structure is deployed ona corresponding switch through a configuration management module to ensure real-time transmission requirements of different service flows in the industrial internet.

Description

technical field [0001] The invention belongs to the technical field of network communication, in particular to a software-definable real-time transmission mechanism. Background technique [0002] In the future industrial field, there will be tens of billions of devices connected to the Internet. Most of the information transmitted in the industrial Internet is the periodic measurement information from the industrial site, interwoven at the field level and the control level, and the control between peers Information, synchronizing network equipment at all levels and synchronizing clock information for operation, these information themselves have strict time requirements and require particularly high real-time and certainty. Traditional industrial Ethernet cannot bear these huge data transmission volumes, nor can it guarantee the real-time requirements in industrial control networks. Cyber-physical systems (CPS) and the Industrial Internet have put forward new requirements fo...

AI Technical Summary

Problems solved by technology

These transmission schedules are often synthesized offline and remain fixed, thus making it difficult to dynamically add or remove web applications

Moreover, these network technologies were originally designed to provide best-effort communication services, and lack a mechanism to provide real-time guarantees; the commonly used protocols in industrial Ethernet are modified from the Ethernet standard protocol and added with corresponding functions. Although the protocols can meet the deterministic and real-time requirements of industrial systems, they have low interoperability, high cost, and insufficient network bandwidth, so they cannot meet the transmission requirements of current industrial control systems.

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