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Data transmission method and communication device

A data transmission method and a technology of transmission blocks, which are applied in the field of data transmission methods and communication devices, can solve problems such as affecting system performance, reducing retransmission efficiency, and encoding block decoding errors, so as to improve retransmission efficiency, improve retransmission efficiency and The effect of decoding performance

Active Publication Date: 2020-09-29
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When interference occurs in certain positions or the probability of error is relatively high, for example, symbols at certain positions are punctured or symbols at certain positions perform automatic gain control while carrying service data, the coding blocks mapped to these positions are always Will cause decoding errors, resulting in reduced retransmission efficiency and affecting system performance

Method used

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  • Data transmission method and communication device
  • Data transmission method and communication device

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Embodiment Construction

[0040] In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0041] The technical solutions provided in the embodiments of the present application may be applied to 5G systems, or applied to future communication systems or other similar communication systems. In addition, the technical solutions provided by the embodiments of the present application can be applied to a cellular link, and can also be applied to a link between devices, such as a device to device (D2D) link. D2D link or V2X link may also be called side link, auxiliary link or side link. In the embodiments of the present application, the aforementioned terms all refer to links established between devices of the same type, and have the same meaning. The so-called devices of the same type can be the link between the ter...

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Abstract

The invention discloses a data transmission method and a communication device, which can be applied to scenes such as Internet of Vehicles, unmanned driving, smart power grids, smart cities and the like. The method comprises the following steps: a sending device carries out cascading on all data units included in the transmission block according to the transmission block attribute information of the transmission block to be sent, the sending device sends the transmission block after data unit cascading, the transmission block attribute information comprises the number of times or redundant versions that the transmission block has been sent currently, and the data unit is an encoding block or an encoding block set. Thus, when the number of times that the transmission block is sent or the redundancy version is changed, a cascading sequence among the data units is correspondingly changed, so that diversity effect can be achieved to a certain extent, interference or damage degrees of the same coding block in different transmission processes are different, and retransmission efficiency and decoding performance are effectively improved.

Description

Technical field [0001] This application relates to the field of communication technology, and in particular to a data transmission method and communication device. Background technique [0002] In wireless communication, data transmission is usually carried out in units of transmission blocks. A transmission block includes multiple coding blocks, and each coding block performs independent cyclic redundancy check (CRC) and channel coding. [0003] In the prior art, the initial transmission and retransmission of a transport block (TB) adopt the same processing procedure, and the order of mapping each code block in a transport block to the time domain and the frequency domain remains unchanged. When interference occurs in certain positions or the probability of error is relatively high, for example, symbols in certain positions are punctured or symbols in certain positions carry service data while performing automatic gain control. The coding blocks mapped to these positions are alwa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/16
CPCH04L1/0064H04L1/0061H04L1/0071H04L1/1607H04L1/0057
Inventor 王俊伟
Owner HUAWEI TECH CO LTD
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