Time-sensitive network best-effort flow scheduling method

Abstract

The invention belongs to the technical field of network communication, and discloses a best-effort flow scheduling method for a time sensitive network. The method comprises the following steps: acquiring current time sensitive network data; selecting a set of frames from the cache that maximizes the best-effort flow bandwidth utilization; obtaining a best-effort flow scheduling result; and scheduling the best-effort flow. According to the method, the bandwidth utilization rate of the best-effort flow time slot is maximized in each bandwidth period in the Qbv protocol, and the bandwidth resource utilization rate of the best-effort flow is improved. Along with accumulation of bandwidth periods, the utilization rate of bandwidth resources is increased to a great extent in terms of overall service.

Description

technical field [0001] The invention belongs to the technical field of network communication, and in particular relates to a time-sensitive network best-effort flow scheduling method. Background technique [0002] At present: With the continuous development of network communication technology, new information technologies are constantly emerging, such as audio and video technology and other services that require real-time performance are increasing, and standard Ethernet only provides best-effort services, which cannot meet these requirements. Real-time services with high requirements on delay and jitter. Therefore, Time Sensitive Networking (TSN) came into being. Time Sensitive Networking is a set of revisions to IEEE802.1, aiming to introduce real-time functions into Ethernet-based networks. Time Sensitive Networking has high-precision time synchronization, The advantages of bounded delay and zero jitter, coexistence of multiple services, high reliability and compatibilit...

AI Technical Summary

Problems solved by technology

Although this length-aware scheduling mechanism alleviates the waste of bandwidth resources, there is still a serious problem of bandwidth resource waste.

[0005] Through the above analysis, the problems and defects of the existing technology are: the guard band mechanism and the length-aware scheduling mechanism in the existing Qbv protocol have the problem of waste of bandwidth resources, and the guard band of each period will cause a waste of bandwidth resources. The problem of wasting bandwidth resources caused by the accumulation of time cannot be underestimated

When there are many BE frames in the cache, there will be a situation where a large number of BE frames stay in the cache, and in serious cases, the cache will overflow, and then the data will be lost.

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