A data stream transmission method and device for a time-sensitive network

Abstract

Embodiments of the present application provide a data stream transmission method and device for a time-sensitive network. The scheme is as follows: obtain the mapping information and GCL corresponding to multiple data streams to be transmitted; the mapping information and GCL are determined according to the transmission delay function of each data stream to be transmitted and minimize the transmission delay under preset constraints; When at least one data flow to be transmitted is received, at least one data flow to be transmitted is stored in multiple virtual queues; based on the mapping relationship between the virtual queue and the physical queue included in the mapping information, the data flow to be transmitted in the multiple virtual queues The mapping is stored in the physical queue; for the transmission gate on each physical queue, after the transmission gate is opened based on the GCL, the data stream to be transmitted stored in the physical queue is transmitted. Applying the technical solutions provided by the embodiments of the present application avoids mutual interference between data streams, ensures the delay requirement of data stream transmission, and increases the number of data streams that can be scheduled by the TSN.

Description

technical field [0001] The present application relates to the technical field of the Internet of Things, and in particular, to a data stream transmission method and device for a time-sensitive network. Background technique [0002] In Time Sensitive Networking (TSN), in order to enable network nodes to transmit data streams accurately, so as to provide delay guarantee for deterministic service traffic (that is, scheduled traffic, also known as Scheduled Traffic, ST), Traffic scheduling in TSN is realized by using Time Aware Scheduling (TAS) mode. [0003] The TAS method is mainly composed of a gate control mechanism and a scheduling algorithm. Among them, the gating mechanism is a hardware mechanism, which controls the data flow transmission by setting the gate state of the transmission gate on the physical queue. In the process of traffic scheduling, the scheduling algorithm is run, and the gate control list (GCL) is obtained by calculation. The gate status and time inter...

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Problems solved by technology

[0004] However, when using the TAS method for traffic scheduling, limited by the physical resources of the physical queue, multiple data streams are inevitably transmitted in the same physical queue, especially in the case of a large number of data streams

At this time, the mutual interference between the various data streams leads to the randomness of the transmission delay, which makes it difficult to meet the delay requirements of data stream transmission, thus limiting the number of data streams that can be scheduled by TSN

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