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Data transmission method, reception method and device

A sending method and data technology, applied in the direction of transmission data organization to avoid errors, digital transmission system, forward error control, etc., can solve the problems of high CRC overhead and resource waste

Active Publication Date: 2020-09-18
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present application provides a data sending method, a receiving method and a device, which are used to solve the problem that in the above coding method, each LDPC coding block needs to add a 24-bit CRC. Extra overhead, a serious waste of resources

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  • Data transmission method, reception method and device
  • Data transmission method, reception method and device
  • Data transmission method, reception method and device

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Embodiment Construction

[0154] In order to solve the low-density parity check (Low-Density Parity-check, LDPC) encoding method in the background technology, each coded block must add a 24-bit cyclic redundancy check (Cyclic Redundancy Check, CRC), Bringing extra overhead and waste of resources, reducing transmission efficiency and other issues, this application proposes a data sending method and receiving method, a new LDPC code encoding method is used in the sending device, and a transmission block is divided into multiple coded blocks, select at least one coded block, and insert one bit of odd parity bit or even parity bit into each coded block in the selected at least one coded block, for the sake of simplicity, the transmission The operation of inserting parity bits after the block is divided into multiple coded blocks is abbreviated as "inserting one bit of odd parity bit or even parity bit into at least one coded block", the same below. Of course, a parity bit of one bit may also be added to ea...

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Abstract

The application provides a data sending method, receiving method and device. The method comprises the following step: sending equipment divides a to-be-sent transmission block into at least two codingblocks, a bit of odd-even check bit is added in at least one coding block in at least two coding blocks, the LDPC coding is performed on each coding block after adding the odd-even check bit to obtain a data bit sequence after LDPC coding, and the data bit sequence is sent to receiving equipment; the receiving equipment receives multiple data bit sequences, decodes the same and extracts odd-evencheck bit from the coding block added with the odd-even check bit, the coding block is checked according to the odd-even check bit, and a bit of odd-even check bit is only added on the coding block, thereby effectively reducing the decoding expenditure at a receiving end and saving the decoding and transmission resource.

Description

technical field [0001] The present application relates to communication technologies, and in particular to a data sending method, receiving method and device. Background technique [0002] With the development of network technology and the popularization of mobile terminal equipment, users use mobile terminal equipment to send or receive data in a wider range of scenarios. The commonly used data encoding method is Low-Density Parity-check (LDPC) encoding. It is a type of linear block code with a sparse check matrix, that is, only a small number of elements in the check matrix are "1", and most of them are "0". LDPC makes use of the sparseness of the matrix, so that the decoding complexity is only linearly related to the code length, and it can still be effectively decoded when the code length is long, and has a simpler decoding algorithm. The research shows that LDPC has a coding performance approaching Shannon's limit. The 3rd Generation Partnership Project (3rd Generatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/16
CPCH04L1/004H04L1/0061H04L1/0078H04L1/1607
Inventor 余荣道
Owner HUAWEI TECH CO LTD
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