Uplink full power transmission method and device

A transmission method and full power technology, which is applied in the field of uplink full power transmission method and equipment, can solve problems such as the inability to ensure UE uplink full power transmission, and achieve the effects of full power transmission, enhanced uplink coverage, and uplink transmission power improvement

CN111800850BActive Publication Date: 2021-12-21VIVO MOBILE COMM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-12-21

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Abstract

The embodiment of the present invention discloses a method and device for uplink full power transmission to solve the problem in the prior art that UE uplink full power transmission cannot be ensured. The method is applied to terminal equipment, including: scaling with the power scaling factor The uplink transmission power is used for uplink transmission; the power scaling factor is determined by a power control factor; wherein, the power control factor includes at least one of the following: the uplink full power transmission capability of the terminal device, the supported power reported by the terminal device The transmission precoding matrix indicates TPMI, the TPMI issued by the network device, the working mode reported by the terminal device, and the number of antenna ports of each SRS resource in the sounding reference signal SRS resource set configured by the network device according to the working mode . The technical solution improves uplink transmission power, enhances uplink coverage, and realizes uplink full-power transmission of terminal equipment.
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Description

technical field

[0001] The present invention relates to the technical field of wireless communication, in particular to an uplink full power transmission method and equipment. Background technique

[0002] In NR (New Radio, new air interface) Rel-15, PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) supports codebook-based and non-codebook-based transmission, which puts higher requirements on the implementation of PUSCH power control. Codebook-based transmission means that the UE (User Equipment, user end) selects a precoding codebook according to the instructions of the network side; non-codebook-based transmission means that the UE can dynamically determine the precoding code according to CSI (Channel State Information, channel state information) Book.

[0003] For codebook-based PUSCH transmission, when the number of antenna ports configured by the network side for SRS (Sounding Reference Signal, sounding reference signal) based on codebook transmiss...

Examples

Embodiment 1

[0043] Assume that the uplink power before scaling calculated by the uplink power control is P, the power scaling factor for uplink transmission is α, and the number of non-zero (or non-zero) antenna ports for uplink transmission is β. Wherein, the non-zero (or non-zero) uplink transmission antenna port means that all row values ​​in the precoding codebook corresponding to the antenna port are non-zero.

[0044] When the terminal device supports the first UE capability (for example, each radio frequency branch of the terminal device supports full power transmission), the power scaling factor may be determined to be 1, that is, α=1.

[0045] After determining the power scaling factor = 1, the terminal device first scales the uplink power P according to the power scaling factor α, and then equally divides it among the non-zero uplink transmission antenna ports to obtain the uplink transmission power of each uplink transmission antenna port (that is, the actual transmission power ...

Embodiment 2

[0048] Assume that the uplink power before scaling calculated by the uplink power control is P, the power scaling factor for uplink transmission is α, and the number of non-zero (or non-zero) antenna ports for uplink transmission is β. Wherein, the non-zero (or non-zero) uplink transmission antenna port means that the row values ​​in the precoding codebook corresponding to the antenna port are all non-zero, which may be referred to as the number of non-zero antenna ports hereinafter.

[0049] When the terminal device supports the second UE capability (for example, each radio frequency branch of the terminal device does not support full power transmission), the value of the power scaling factor α is different according to the working mode supported by the UE.

[0050] Specifically, when the UE supports working mode one (for example, the terminal device reports the working mode one, and the number of antenna ports of each SRS resource in the SRS resource set configured by the net...

Embodiment 3

[0055] Assume that the uplink power before scaling calculated by the uplink power control is P, the power scaling factor for uplink transmission is α, and the number of non-zero (or non-zero) antenna ports for uplink transmission is β. Wherein, the non-zero (or non-zero) uplink transmission antenna port means that the row values ​​in the precoding codebook corresponding to the antenna port are all non-zero, which may be referred to as the number of non-zero antenna ports hereinafter.

[0056] When the terminal device supports the third UE capability (for example, some radio frequency branches of the terminal device support full power transmission), the value of the power scaling factor α is different according to the working mode supported by the UE.

[0057] Specifically, when the UE supports working mode one (for example, the terminal device reports the working mode one, and the number of antenna ports of each SRS resource in the SRS resource set configured by the network dev...