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Data transmission method and device

A data transmission method and data technology, applied in digital transmission system, transmission system, adjustment of transmission rate, etc., can solve the problems of scrambling, user equipment cannot accurately determine MCS, and the method is no longer applicable.

Active Publication Date: 2020-10-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if the newly introduced physical layer identifier is used to scramble the DCI, the original method of determining the MCS based on the DCI will no longer be applicable, and the user equipment cannot accurately determine the MCS, resulting in failure to receive data

Method used

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  • Data transmission method and device

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Embodiment Construction

[0102] In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings. The specific operation methods in the method embodiments can also be applied to the device embodiments or system embodiments.

[0103] The terms involved in this application are explained below:

[0104] At least one means one, or more than one, including one, two, three and more.

[0105] A plurality refers to two, or more than two, including two, three or more.

[0106] Carrying may mean that a certain message is used to carry certain information or data, or it may mean that a certain message is composed of certain information.

[0107] Coupling refers to an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.

[0108] ...

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Abstract

The application provides a data transmission method and device. According to the method, a terminal device is capable of receiving first information, and determining a modulation and coding scheme (MCS) table used by data according to a scrambling identifier of the first information and target information, wherein the first information is used for scheduling the data, and the scrambling identifier of the first information comprises MCS-C-RNTI or High-Priority-C-RNTI; and the data are received or sent, the MCS used by the data is determined according to the first information and the MCS table.By adopting the method, the terminal device can determine the MCS table used by the data according to the scrambling identifier of the first information and the target information, and can determinethe MCS used by the data according to the table and the first information, thereby realizing the determination of the MCS.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a data transmission method and device. Background technique [0002] During the mobile communication process, a network device (such as a base station) sends downlink control information (DCI) to a user equipment (UE) (such as a terminal), and the DCI can be carried on a physical downlink control channel (PDCCH) ), the DCI may be used to indicate information of a data channel, where the data channel is, for example, a physical uplink shared channel (physical downlink shared channel, PUSCH) used to carry uplink data, or a physical downlink shared channel (physical downlink shared channel) used to carry downlink data downlink shared channel, PDSCH). The DCI can also be used to indicate the modulation and coding scheme (modulation and coding scheme, MCS) adopted by the data channel, so that the user equipment can determine the MCS according to the DCI to ...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L5/00
CPCH04L1/0003H04L1/0023H04L5/0053H04L1/00H04L5/00H04W72/12
Inventor 马蕊香官磊
Owner HUAWEI TECH CO LTD