Resource allocation method in time-sensitive network

Abstract

The invention relates to a resource allocation method in a time-sensitive network, which comprises the following steps of: 1, modeling a network topology into a directed graph G (V, E); 2, eliminatingunmatched routes; 3, detecting the traffic forwarding rate of each node of each path; 4, formulating an objective function and an output function, wherein the objective function is the minimized jitter of AVB traffic, and the output function is the traffic quantity allocated to each path; 5, formulating constraint conditions according to the target function in the step 4; 6, searching for a pathwith the largest hop count, and removing the path in a feasible solution, and remaining p-1 paths at the moment; and 7, recording a solution generated by each round of calculation in the dynamic change as a sample space. On the premise of ensuring TT traffic delay, the jitter of AVB traffic is minimized, the audio and video transmission effect is ensured, the AVB traffic delay is reduced to a certain extent, and the multi-path dynamic allocation problem of mixed traffic at a source node is solved.

Description

technical field [0001] The invention relates to a resource allocation method in a time-sensitive network, and belongs to the technical field of time-sensitive network technology of the Industrial Internet of Things. Background technique [0002] The emergence of network collaboration technology has opened up new manufacturing scenarios that integrate modern technologies to increase production efficiency, improve product quality, and reduce resource consumption. The Industrial Internet of Things is a specific implementation of network collaboration technology. It uses various high-precision sensors to monitor equipment status and on-site conditions in real time, and finally realizes intelligentization of traditional industries. In this context, with the increasing requirements for transmission of time-sensitive traffic (TT traffic) and audio-video traffic (AVB traffic) in industrial sites, the IEEE802.1 Time-Sensitive Networking (TSN) task group has developed a time-sensitive...

AI Technical Summary

Problems solved by technology

AVB traffic that is also important in industrial sites, such as key data for image recognition, cannot be guaranteed in real time

Moreover, the method of single-path traffic transmission makes too much traffic aggregated on one path, which will lead to a decrease in network stability and difficulty in guaranteeing network service quality, thus reflecting the importance of dynamic allocation of multi-path resources

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