Data transmission method and system

Abstract

The embodiment of the invention provides a data transmission method and system and is applied to the technical field of communications. The method comprises the steps of acquiring application data by a first virtual network card, wherein pieces of the application data are multiple pieces of data with different lengths; segmenting or splicing the application data to obtain data to be sent, which is correspondingly matched with a physical channel; and forwarding the data to be sent to a physical layer of a sending end, and sending the data to be sent to a physical layer of a receiving end from the physical layer of the sending end. The data to be sent, which is obtained by segmenting or splicing the application data, is directly sent to the physical layer of the receiving end from the physical layer of the sending end without being subjected to processing similar with scheduling of a MAC (Media Access Control) layer in a conventional data transmission system, so that a data transmission structure is simplified, and thus, data transmission complexity is low.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and system. Background technique [0002] With the development of mobile communication technology, especially the communication technology based on things, such as Internet of Things, Internet of Vehicles, new intelligent terminals, smart cities, etc., such applications have huge requirements for network and data communication. In data communication, since the length of the data packet is generally variable, in order to match the corresponding channel resources, the data packet needs to be processed. The high-level data packets such as the application layer are segmented and spliced ​​into data that can be processed by the physical layer channel. [0003] figure 1 It is a schematic diagram of the process of the prior art data transmission method, referring to figure 1 , to illustrate the process of transmitting high-level data to the p...

AI Technical Summary

Problems solved by technology

After the user PHY layer receives the data, it is scheduled by the MAC layer. After the RLC layer parses and reassembles the received data, and the PDCP layer decrypts and decompresses it, it is delivered to the upper layer. Among them, the PHY layer is layer 1, MAC layer, RLC layer and PDCP layer It is layer 2. In the prior art, although the structure and function of layer 2 are relatively complete, it can be seen from the above introduction that the data after segmentation and splicing at the RLC layer needs to be scheduled by the MAC layer before reaching the PHY layer, complex structure and difficult implementation

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