Method and device for segmenting code block

Abstract

The invention discloses a method and a device for segmenting a code block. The method comprises the following steps: determining a reference information packet length of the code block according to acquired relevant segmentation parameters; determining a maximum information packet length according to the reference information packet length and hardware parameters; and segmenting a transmission block greater than the maximum information packet length into two or more code blocks according to the acquired relevant segmentation parameters, the hardware parameters and the determined maximum information packet length, wherein the information length after the code block is segmented is less than the determined maximum information packet length. According to the method disclosed by the invention, the maximum information packet length for segmenting the code block is determined by the acquired relevant segmentation parameters to segment the code block, thereby shortening the time delay of a system brought by the segmentation of the code block, avoiding the influence of the time delay generated by the segmentation of the code block on the work of the system and improving the performance of the system.

Description

Technical field [0001] The present invention relates to communication coding technology, in particular to a method and device for implementing code block division. Background technique [0002] figure 1 It is a block diagram of the digital communication system in the prior art, such as figure 1 As shown, a digital communication system includes a transmitting end and a receiving end, wherein the transmitting end and the receiving end communicate through a channel. In general, the transmitting end mainly includes a source, a source encoder, a channel encoder, and a modulator, and the receiving end mainly includes a demodulator, a channel decoder, a source decoder, and a sink. Among them, the main function of the channel encoder is to introduce redundant information for the information bits according to certain rules, so that the channel decoder at the receiving end can correct to a certain extent the errors that occur when the information is transmitted on the channel. [0003] Base...

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Problems solved by technology

[0010] Code block segmentation is an indispensable process in the channel coding chain processing flow. However, the code block segmentation does not fully consider the delay in the application process. Also taking the code block segmentation method of 3GPP LTE as an example, after code block segmentation After block division, the length of each code block is generally between 3000 bits and 6120 bits. When the bandwidth is small, each code block will occupy multiple consecutive OFDM symbols in the time domain, and the receiving end must receive these OFDM symbols before processing If a code block is decoded, if the system is sensitive to time delay (such as Internet of Vehicles), decoding the data after code block segmentation often brings unacceptable time delay to the system. Therefore, the existing code block segmentation technology is time-sensitive For systems with higher delay requirements, it will affect the work of the system

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