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Uplink data transmission method, user equipment and readable storage medium

A data transmission method and technology of user equipment, applied in the field of uplink data transmission method, user equipment and readable storage medium, capable of solving problems such as poor reliability of data transmission, achieving the effect of facilitating power control and simplifying complexity

Active Publication Date: 2020-04-14
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the Rel-15 protocol only supports broadband TPMI indications, the reliability of uplink data transmission is poor

Method used

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  • Uplink data transmission method, user equipment and readable storage medium
  • Uplink data transmission method, user equipment and readable storage medium
  • Uplink data transmission method, user equipment and readable storage medium

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Embodiment Construction

[0041] Since the Rel-15 protocol only supports wideband TPMI indication, the UE uses the same precoding matrix when transmitting uplink data on each subband, which leads to poor coding accuracy of the UE on each subband. When the base station receives the uplink data transmitted by the UE, the signal-to-noise ratio is low, which ultimately leads to poor reliability of uplink data transmission.

[0042] To this end, an embodiment of the present invention provides an uplink data transmission method. In the method, the uplink scheduling information sent by the base station includes TPMI indication information corresponding to each subband used for uplink data transmission, so that the UE When transmitting uplink data, corresponding TPMIs can be used in different subbands for uplink data transmission, thereby improving the reliability of data transmission.

[0043] In order to make the above objects, features and advantages of the present invention more comprehensible, specific em...

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PUM

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Abstract

The invention discloses an uplink data transmission method, user equipment and a readable storage medium. The method comprises the steps of receiving uplink scheduling information, the uplink scheduling information comprises indication information of TPMIs corresponding to all sub-bands used for uplink data transmission, and the indication information of the TPMIs corresponding to all the sub-bands corresponds to indication information of the same rank; determining a precoding matrix corresponding to each sub-band based on the indication information of the TPMI corresponding to each sub-band;and pre-coding and sending uplink data to be transmitted on each sub-band based on the pre-coding matrix corresponding to each sub-band. By applying the method, the reliability of the uplink data canbe improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an uplink data transmission method, user equipment and a readable storage medium. Background technique [0002] The base station sends uplink scheduling information to user equipment (User Equipment, UE) through a physical downlink control channel (Physical Downlink Control Channel, PDCCH), so as to schedule the UE to send uplink data. [0003] In the Rel-15 protocol, when uplink scheduling is performed based on the codebook, the uplink scheduling information carried by the PDCCH includes a field named "Precoding information and number of layers", which is used for Indicates Rank Indicator (Rank Indicator, RI) information and Transmitted Precoding Matrix Indicator (Transmitted Precoding Matrix Indicator, TPMI) information used by the entire scheduling resource. Wherein, the TPMI adopted by the entire scheduling resource is called broadband TPMI. [0004] Since th...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04B7/0456
CPCH04W72/0453H04B7/0456H04W72/23H04B7/0404H04W72/1268
Inventor 马大为
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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