A Method for Realizing Precise Time Delay Transmission Control in Switched Ethernet Link Layer

Abstract

The invention relates to a method for realizing precise time-delay transmission control at a switched Ethernet link layer, which is suitable for a business data transmission system based on switched Ethernet technology networking and has a high demand for real-time data transmission, including A source device, a number of Ethernet switching devices, and a sink device are characterized in that when the Ethernet data frame message sent from the source device passes through the intermediate layer network transmission carrier devices at all levels, the network transmission carrier device uses the Ethernet data frame message The application layer reserves bytes to store link delays and store-and-forward delays at all levels, and the sink-end device obtains the accurate delay from the source to the sink by obtaining this information, so as to realize the switched Ethernet working in the link layer communication mode precise time delay control. The invention has the advantages of realizing the data transmission system of switching Ethernet equipment networking working in the link layer communication mode, and achieving professional network transmission equipment performance indicators in terms of precise time delay control.

Description

technical field [0001] The invention relates to a method for realizing precise time delay transmission control of a switched Ethernet link layer, which can realize precise time delay control of a switched Ethernet working in a link layer communication mode, and belongs to the technical field of communication. Background technique [0002] Due to its significant advantages such as low cost, good openness, and convenient interface, Ethernet communication technology has developed rapidly in the field of network communication, and more and more data transmission services are carried by Ethernet communication technology. Ethernet-based communication networks generally use Ethernet switches as network layer transmission equipment. The switching principle mainly adopts store-and-forward mode, and the communication mode generally adopts Ethernet OSI four-layer protocol (transmission control layer) TCP / UDP mode. For most common The data transmission service can meet the transmission ...

AI Technical Summary

Problems solved by technology

However, since ordinary Ethernet switches are based on the switching principle of store and forward, it is difficult to accurately control the transmission delay in theoretical analysis.

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