Data transmission method and device

Abstract

The invention provides a data transmission method and device, and belongs to the technical field of communication. The method comprises the following steps: acquiring a multi-channel coding block stream, distributing coding blocks in the multi-channel coding block stream according to a time slot based on a preset multiplexing sequence to form a channel of coding block stream, and carrying out segmented packaging processing on the channel of coding block stream to generate at least one frame. According to the invention, the time delay of data transmission can be reduced.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a method and device for transmitting data. Background technique [0002] In the current Ethernet scene, there are high-speed Ethernet ports and low-speed Ethernet ports, which can be collectively referred to as Ethernet ports. They all use Ethernet for data transmission. Ethernet is the most commonly used communication protocol standard in LANs. Logically, It can be divided into multiple layers, from top to bottom are link control layer, media access control (Media Access Control, MAC) layer and physical layer, and the physical layer can be divided into physical coding sublayer (Physical Coding Sublayer) from top to bottom -layer, PCS), physical medium attachment layer (Physical Medium Attachment, PMA) and physical media association layer (Physical Media Dependent, PMD), PCS also includes codec layer and scrambling layer, etc. [0003] When data is transmitt...

AI Technical Summary

Problems solved by technology

[0005] At present, the first service data flow is sent first through the arbitration of the MAC layer of the Ethernet output port. During the process of transmitting the first service data flow, the second service data flow is received through the MAC layer. The priority of the second service data flow must be The priority is higher than the first service data flow, but there is no extra transmission bandwidth for transmitting the second service data flow at this time, so the second service data flow can only be transmitted after the first service data flow is transmitted

In this way, if the data volume of the first service data flow is very large, it will cause the second service data flow to wait for a long time for transmission, which in turn will cause a relatively long data transmission delay, which cannot meet the requirements of relatively high data transmission delay in industrial Ethernet. Business needs of the business

Images