Method and device for data transmission

A data transmission and data transmission block technology, applied in the field of data transmission, can solve problems such as high complexity and affect data demodulation performance, and achieve the effects of low complexity, improved diversity gain, and simplified computational complexity

Active Publication Date: 2019-03-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current existing methods for interleaving modulated symbols have high complexity, which affects the performance of data demodulation

Method used

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  • Method and device for data transmission
  • Method and device for data transmission

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Embodiment Construction

[0120] The technical solution in this application will be described below with reference to the accompanying drawings.

[0121]The technical solution of the embodiment of the present application can be applied to various communication systems, for example: global system of mobile communication (globalsystem of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long termevolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS) or global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system or future 5G system or new radio (new ra...

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Abstract

The present application provides a method and device for data transmission. The method comprises: a transmitting device acquires a modulation symbol sequence to be transmitted in a plurality of time-frequency resource unit groups, wherein the size of the time-frequency resource unit groups is agreed upon by a protocol, or the size of time-frequency resource unit groups is determined according to the transmission parameters; the transmitting device performs interleaving processing on the modulation symbol sequence according to the time-frequency resource unit groups to obtain the order in whichthe modulation symbol sequence is mapped into the time-frequency resource unit groups, wherein a plurality of consecutive sets of modulation symbols in the sequence of modulation symbols are mapped on at least two of the plurality of time-frequency resource unit groups; the transmitting device transmits the modulation symbol sequence in the order of the modulation symbol sequence mapping in the plurality of time-frequency resource unit groups. The embodiments of the present application can simplify the computational complexity in chip processing, and solve the problem of high complexity caused by interleaving in CB units in the prior art.

Description

technical field [0001] The present application relates to the communication field, in particular to a data transmission method and device. Background technique [0002] In long term evolution (LTE), information bits are transmitted in a certain transmission time interval (transmission time interval, TTI) TTI in units of transport blocks (transport block, TB) at the physical layer, and information bits of one TB After cyclic redundancy check (cyclic redundancy check, CRC) bit addition, code block segmentation (code block segmentation), channel coding (channel coding), rate matching (rate matching), symbol modulation (modulation) and other steps, the modulated The subsequent symbols are mapped to the scheduled time-frequency resources. [0003] In order to improve the performance of the system and combat frequency-domain selectivity or time-domain selectivity, interleaving the modulated symbols is considered to be a feasible method. However, currently existing methods for in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/0043H04L1/0071H04L1/0009H04L1/0075H04W76/27H04L5/0051H04L27/0008H04W72/0446H04W72/0453H04W80/02H04W72/23
Inventor 施弘哲葛士斌毕晓艳张闽
Owner HUAWEI TECH CO LTD
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