Time-sensitive network switching architecture based on virtual queue

Abstract

The invention discloses a time-sensitive network switching architecture based on a virtual queue, and relates to the field of industrial automation. The invention comprises a scheduling information module, a scheduling module and a parallel cache module, the scheduling information module maintains data information and state information of the whole exchange architecture; the scheduling module performs input sorting on the information elements and extracts output stream information; and the parallel cache module manages the storage of the data stream. According to the invention, a flexible exchange architecture is constructed, so that a scheduling strategy is not limited by a fixed queue, and various types of scheduling requirements are flexibly met; various data streams of each port can share all storage resources, so that the resource utilization rate and the capability of dealing with burst traffic are improved; the scheduling module is constructed, so that the scheduling module can correctly and quickly sort various data streams according to different scheduling strategies, a multi-layer scheduling architecture does not need to be constructed according to different scheduling strategies, and the scheduling complexity is reduced.

Description

technical field [0001] The invention relates to the field of industrial automation, in particular to a virtual queue-based time-sensitive network switching architecture. Background technique [0002] Real-time and safety-related applications in fields such as industrial automation, aerospace and intelligent driving require deterministic real-time communication. However, standard Ethernet (based on a best-effort policy) cannot support this requirement. In order to achieve deterministic real-time transmission, the IEEE 802.1 Time-Sensitive Networking (TSN, Time-Sensitive Networking) task group has formulated a series of standards, such as IEEE 802.1Qbv, IEEE 802.1Qbu, etc. Currently, there is a series of switches that support typical TSN standards. As the key basis of the communication function of TSN switches, the data exchange architecture needs to be designed for the requirements of multi-port, efficient parallelism and deterministic mechanism forwarding, so as to ensure ...

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Problems solved by technology

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to build a flexible switching architecture, so that the scheduling strategy is not limited by the fixed queue, so as to flexibly meet various types of scheduling requirements; how to build a The data stream storage and management method enables all types of data streams on each port to share all storage resources on the premise of ensuring deterministic storage and forwarding of time-sensitive streams (TS, Time-Sensitive), thereby improving resource utilization and response Ability to burst traffic; how to build a scheduling module so that it can correctly and quickly sort various data flows according to different scheduling strategies, and does not need to build a multi-layer scheduling architecture according to different scheduling strategies to reduce scheduling complexity

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