Method for transmitting uplink signal in wireless communication system, and apparatus therefor

Patent metadata

Field	Value
Publication number	US-2022174609-A1
Application number	US-202017593908-A
Country	US
Kind code	A1
Filing date	Mar 26, 2020
Priority date	Mar 28, 2019
Publication date	Jun 2, 2022
Grant date	—

Abstract

Disclosed is a method for transmitting an uplink signal in a wireless communication system according to an embodiment of the present disclosure performed by a User Equipment (UE) includes receiving configuration information in relation to transmission power of an uplink signal, determining the transmission power based on the configuration information, and transmitting the uplink signal based on the determined transmission power.

First claim

1 . A method for transmitting an uplink signal in a wireless communication system, the method performed by a User Equipment (UE) comprising:
receiving configuration information in relation to transmission power of an uplink signal; determining the transmission power based on the configuration information; and transmitting the uplink signal based on the determined transmission power, wherein the transmission power is determined for each panel of a plurality of panels of the UE, wherein the uplink signal is transmitted based on at least one panel of the plurality of panels of the UE, wherein the transmission power is determined to be a smaller value between a first transmission power and a second transmission power, and wherein the first transmission power is based on a maximum value of a summation of transmission power of each of the plurality of panels, and the second transmission power is a precalculated transmission power based on an index of each of the panels.

2 . The method of claim 1 , wherein the first transmission power is based on the maximum value and a predetermined coefficient for each of the panels.

3 . The method of claim 2 , wherein the predetermined coefficient is 1 or an inverse value of a number of activated panels of the plurality of panels.

4 . The method of claim 2 , wherein the predetermined coefficient is configured based on information configured by a base station.

5 . The method of claim 1 , further comprising transmitting UE capability information,
wherein the UE capability information includes information representing maximum transmission power of each of the panels or information related to a coefficient to be applied to each of the panels.

6 . The method of claim 5 , wherein the predetermined coefficient is a value determined based on the maximum transmission power of each of the panels.

7 . The method of claim 5 , wherein the configuration information includes the predetermined coefficient, and the predetermined coefficient is a value determined based on the maximum transmission power of each of the panels.

8 . The method of claim 1 , wherein the precalculated transmission power is determined based on a type of the uplink signal.

9 . The method of claim 8 , wherein the uplink signal is based on one of Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Sounding Reference Signal (SRS), or Physical Random Access Channel (PRACH).

10 . The method of claim 8 , wherein, based on a condition that a summation of the precalculated transmission powers of the activated panels of the plurality of panels is greater than the maximum value, the second transmission power is based on a specific value.

11 . The method of claim 10 , wherein the specific value is based on the precalculated transmission power and a scaling coefficient.

12 . The method of claim 11 , wherein the scaling coefficient is a value of the maximum value divided by the summation of the precalculated transmission powers.

13 . The method of claim 8 , wherein, based on a condition that a summation of the precalculated transmission powers of the activated panels of the plurality of panels is greater than the maximum value, the second transmission power for specific panels of the plurality of panels is based on a specific value.

14 . The method of claim 13 , wherein the specific value is based on a greater value between panel minimum transmission power and the precalculated transmission power decreased by a predetermined value.

15 . The method of claim 14 , wherein the predetermined value is a value set to each panel of the specific panels, and wherein a summation of the predetermined values for the specific panels is equal to or smaller than the summation of the precalculated transmission powers minus the maximum value.

16 . The method of claim 1 , wherein the configuration information includes parameters related to the determination of the transmission power.

17 . The method of claim 16 , wherein, based on a change of the panel for transmitting the uplink signal, a value of the parameters is maintained as a same value before the change of the panel or changed to a value set to default.

18 . A user equipment (UE) for transmitting an uplink signal in a wireless communication system, comprising:
one or more transceivers; one or more processors; and one or more memories operably accessible to the one or more processors, and configured to store instructions for operations when transmission of the uplink signal is performed by the one or more processors, wherein the operations include: receiving configuration information in relation to transmission power of an uplink signal; determining the transmission power based on the configuration information; and transmitting the uplink signal based on the determined transmission power, wherein the transmission power is determined for each panel of a plurality of panels of the UE, wherein the uplink signal is transmitted based on at least one panel of the plurality of panels of the UE, wherein the transmission power is determined to be a smaller value between a first transmission power and a second transmission power, and wherein the first transmission power is based on a maximum value of a summation of transmission power of each of the plurality of panels, and the second transmission power is a precalculated transmission power based on an index of each of the panels.

19 . (canceled)

20 . One or more non-transitory computer readable medium for storing one or more commands,
wherein the one or more commands executable by one or more processors are configured for a User Equipment (UE) to perform: receiving configuration information in relation to transmission power of an uplink signal; determining the transmission power based on the configuration information; and transmitting the uplink signal based on the determined transmission power, wherein the transmission power is determined for each panel of a plurality of panels of the UE, wherein the uplink signal is transmitted based on at least one panel of the plurality of panels of the UE, wherein the transmission power is determined to be a smaller value between a first transmission power and a second transmission power, and wherein the first transmission power is based on a maximum value of a summation of transmission power of each of the plurality of panels, and the second transmission power is a precalculated transmission power based on an index of each of the panels.

Assignees

• Lg Electronics Inc

Inventors

• Kang Jiwon
• Park Jonghyun
• Park Haewook

Classifications

• H04W52/367 Primary

  Power values between minimum and maximum limits, e.g. dynamic range · CPC title

• H04W52/146 Primary

  Uplink power control · CPC title

• H04W52/42

  in systems with time, space, frequency or polarisation diversity · CPC title