5G and TSN Joint Scheduling Method Based on Wireless Channel Information

Abstract

This application provides a 5G and TSN joint scheduling method based on wireless channel information. The present invention adjusts by setting the retransmission factor under different channel conditions, and eliminates the time jitter caused by the transmission of data packets in the 5G system, thereby providing deterministic end-to-end delay guarantee for time-triggered service flows. In the 5G and TSN joint time scheduling strategy proposed in the present invention, the queue management in the TSN domain will no longer be carried out according to the TSN first-come-first-served mechanism, but will be allocated according to the The quality of the 5G air interface resource channel conditions defines its queuing priority. For the transmission time of service flows with the same service priority in the TSN domain, the delay of the TSN domain for service flows corresponding to poor 5G air interface resource channel conditions will be lower.

Description

【Technical field】 [0001] This application relates to the technical field of collaborative integration of 5G and the industrial Internet, and specifically relates to a 5G and TSN joint scheduling method based on wireless channel information. 【Background technique】 [0002] The collaboration and integration of 5G and the Industrial Internet has become a hotspot in current academic research. 5G has low-latency, high-reliability connection capabilities, and 5G-enabled industrial applications have become a common demand in the communications and industrial circles. However, industrial services have extremely strict requirements on the performance of the bearer network. The factory bearer network not only needs to have low latency, low jitter, and high reliability capabilities, but also has deterministic features. For industrial control systems, deterministic delay guarantees It is the basis of its system security and controllability. Therefore, how to realize the coordinated tr...

AI Technical Summary

Problems solved by technology

[0003] At present, the research on 5G and TSN collaborative transmission has just started, focusing more on network architecture, functional entity and network interface definition, etc. Research on 5G and TSN joint scheduling algorithm and cooperative transmission mechanism is relatively lacking

The biggest challenge facing 5G-TSN collaboration lies in the uncontrollable impact of the time-varying characteristics of the 5G air interface on deterministic data transmission

[0006] However, if That is, the data packet failed to be sent to DS-TT within the required time. Since the state of the DS-TT egress queue gate control list has changed, the queue corresponding to the service flow has been "closed", resulting in the data packet cannot be sent to the DS-TT Transmission within the specified period affects the stability of the control business flow

[0007] Therefore, the transmission time budget of the 5G system plays a very important role in eliminating the uncertainty of the 5G system and ensuring the deterministic transmission performance of 5G-TSN end-to-end data. There is no relevant research, and the joint scheduling of 5G and TSN network conditions cannot be considered at the same time

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