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A method and device for uplink transmission

A transmission method and technology of transmission methods, applied in the field of uplink transmission methods and equipment, can solve the problems affecting uplink transmission performance, lack of antennas, and terminal transmission power cannot reach the maximum transmission power, etc., to achieve effective uplink scheduling information and improve performance.

Active Publication Date: 2022-06-21
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 3) Non-coherent: no antenna can transmit coherently
[0023] In the existing 3GPP NR system, for UEs with partial coherent transmission capability and UEs with non-coherent transmission capability, when the codebook-based uplink transmission scheme with multiple antenna ports is configured for low-rank transmission, the transmit power of the terminal cannot reach the maximum transmit power
3GPP R15 UE cannot reach the maximum uplink transmit power when the number of non-codebook uplink multi-antenna ranks (rank) is less than the number of configured antenna ports when multiple antenna ports are configured.
However, if the UE decides whether to send the uplink signal through CDD, the base station (such as gNB) does not know whether the UE uses CDD to send the uplink channel, which will cause the gNB to be unable to better determine the uplink scheduling information of the uplink signal, thereby affecting the performance of uplink transmission

Method used

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  • A method and device for uplink transmission
  • A method and device for uplink transmission
  • A method and device for uplink transmission

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Embodiment Construction

[0199] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thoroughly understood, and will fully convey the scope of the invention to those skilled in the art.

[0200] The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described...

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Abstract

The present invention embodies an uplink transmission method and equipment, which can indicate the uplink transmission mode between the base station and the terminal, so that the base station and the terminal can guarantee the performance of uplink transmission based on the same understanding of the uplink transmission mode. In addition, the embodiments of the present invention can also solve the problem that at least some terminals cannot reach the maximum transmission power during uplink low-rank transmission. At the same time, the uplink scheduling information of the uplink signal can be calculated more effectively, and the performance of uplink transmission can be improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to an uplink transmission method and device. Background technique [0002] The codebook-based uplink transmission scheme is a multi-antenna transmission technology that determines an uplink transmission precoding matrix based on a fixed codebook. In the fifth-generation New Radio Access Technology (5G NR) system, the codebook-based uplink transmission scheme is similar to the basic principle of the uplink spatial multiplexing technology in the Long Term Evolution (LTE) system, but The adopted codebook and precoding indication methods are different. like figure 1 As shown, in the NR system, the process of the codebook-based uplink transmission scheme includes: [0003] 1) A user equipment (UE) sends an uplink sounding reference signal (Sounding Reference Signal, SRS) to the base station for acquiring the channel state information (Channel State ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/23
Inventor 黄秋萍陈润华高秋彬
Owner DATANG MOBILE COMM EQUIP CO LTD