Method and device for segmenting code block

A code block segmentation and code block technology, which is applied in the field of code block segmentation, can solve problems affecting system work, adequate consideration, and occupancy

Active Publication Date: 2016-11-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 ...

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  • Method and device for segmenting code block
  • Method and device for segmenting code block
  • Method and device for segmenting code block

Examples

Experimental program
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Effect test

Embodiment 1

[0324] In a communication system based on 3GPP LTE and its evolution technology, the first transmission node sends a transmission block with a length of B bits to the second transmission node. According to the obtained segmentation related parameters, each code block is allowed to occupy in the time domain. Maximum number of OFDM symbols N cb , The number of frequency domain subcarriers occupied by the transmission signal N subcarrier Calculate the maximum number of resource elements allowed to be occupied by each code block N RE =N cb ×N subcarrier ;

[0325] According to the maximum number of resource elements allowed to be occupied by each code block N RE, Transmission signal modulation method M, transmission code rate R of the transmission block, and the number of layers of space occupied by the transmission signal N layer , Determine the first information packet length K of the coding block R =N RE ×M×R×N layer ;

[0326] According to the maximum information packet le...

Embodiment 2

[0338] In a communication system based on 3GPP LTE and its evolution technology, the first transmission node sends a transmission block with a length of B bits to the second transmission node, according to the size of the transmission block B and the code block CRC in the obtained segmentation related parameters. Length L, the number of time-domain OFDM symbols occupied by the transmission block N tb , The maximum number of OFDM symbols allowed to be occupied by each coding block in the time domain N cb , Determine the second information packet length K of the coding block R for:

[0339] K R = B · N cb N tb + L

[0340] According to the maximum information packet length K supported by the encoder encoder , The set of information packet length supported by the encoder {K} interleaver , Determine the maximum information packet length K max ; Among them, the maximum information packet length K encoder Is the set of information packet lengths su...

Embodiment 3

[0361] The difference between this embodiment and embodiment 1 or embodiment 2 is: the maximum number of OFDM symbols allowed to be occupied by all coded blocks in the time domain N cb It is indicated by the transmission mode indication.

[0362] For example, the system defines new transmission modes A, B, and C respectively indicating three transmission modes for scenarios with different delay requirements. The use of transmission mode A has the highest delay requirements, and the number of OFDM symbols occupied by a single code block cannot be More than 1; transmission mode B has the second requirement for delay, and the number of OFDM symbols occupied by a single code block cannot exceed 3; transmission mode C requires the lowest delay, and the number of OFDM symbols occupied by a single code block cannot exceed 14;

[0363] The base station semi-statically configures the transmission mode A or B or C through high-level signaling, and the transmission mode indication implicitly...

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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...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L27/26
CPCH04L1/0042H04L1/0083H04L1/009H04L5/0044H04L1/0007H04L1/0057H04L5/0007H04L27/2601H04L5/0046
Inventor 许进徐俊李立广
Owner ZTE CORP
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