Power configuration method and apparatus

Patent metadata

Field	Value
Publication number	US-2023269669-A1
Application number	US-202118043560-A
Country	US
Kind code	A1
Filing date	Aug 5, 2021
Priority date	Aug 31, 2020
Publication date	Aug 24, 2023
Grant date	—

Abstract

This application provides a power configuration method and an apparatus, so that a terminal device is enabled to allocate as much uplink transmit power as possible to a first port, and allocate first transmit power as transmit power of a second port, so that total transmit power of the terminal device reaches calculated transmit power indicated by a network device for sending; or both the first port and the second port are enabled to be used to perform sending by using respective maximum transmit power supported by the first port and the second port, so that receive power of the network device to receive an uplink signal is maximized, thereby improving uplink performance.

First claim

1 - 28 . (canceled)

29 . A power configuration method, comprising:
determining, by a terminal device based on first information, to use a first port to perform uplink sending; when maximum transmit power supported by the first port is greater than calculated transmit power, performing, by the terminal device, uplink sending by using the first port, the calculated transmit power being indicated by a network device; and when the maximum transmit power of the first port is less than the calculated transmit power, dividing uplink sending between the first port and a second port of the terminal device by performing uplink sending through the first port by using the maximum transmit power supported by the first port, and performing a remaining portion of uplink sending through the second port of the terminal device by using first transmit power so that total transmit power of the terminal device is enabled to be the calculated transmit power, or the first transmit power is maximum transmit power supported by the second port, wherein the first information comprises at least one or more of the following: a signal-to-noise ratio (SNR), an uplink path loss, a received signal strength indicator (RSSI), reference signal received power (RSRP), received signal code power (RSCP), precoding and layer quantity information, and sounding reference signal (SRS) resource indicator information.

30 . The method according to claim 29 , wherein a plurality of ports of the terminal device are in a one-to-one correspondence with a plurality of antennas, and the plurality of ports comprise the first port and the second port.

31 . The method according to claim 29 , further comprising:
when the first information comprises the SNR, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a largest SNR as the first port; or when the first information comprises the uplink path loss, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a smallest uplink path loss as the first port; or when the first information comprises the RSSI, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a largest RSSI as the first port; or when the first information comprises the RSRP, selecting, by the terminal device from the plurality of ports of the terminal device, a port with largest RSRP as the first port; or when the first information comprises the RSCP, selecting, by the terminal device from the plurality of ports of the terminal device, a port with largest RSCP as the first port.

32 . The method according to claim 29 , further comprising:
when the first information comprises the SNR and the first port is not a port with a largest SNR in a plurality of uplink ports of the terminal device, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a second largest SNR as the second port; or when the first information comprises the uplink path loss and the first port is not a port with a smallest uplink path loss in a plurality of uplink ports of the terminal device, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a second smallest uplink path loss as the second port; or when the first information comprises the RSSI and the first port is not a port with a largest RSSI in a plurality of uplink ports of the terminal device, selecting, by the terminal device from the plurality of ports of the terminal device, a port with a second largest RSSI as the second port; or when the first information comprises the RSRP and the first port is not a port with largest RSRP in a plurality of uplink ports of the terminal device, selecting, by the terminal device from the plurality of ports of the terminal device, a port with second largest RSRP as the second port; or when the first information comprises the RSCP and the first port is not a port with largest RSCP in a plurality of uplink ports of the terminal device, selecting, by the terminal device from the plurality of ports of the terminal device, a port with second largest RSCP as the second port.

33 . The method according to claim 29 , further comprising:
when determining, based on the first information, to use the first port and the second port to perform uplink sending, performing, by the terminal device, uplink sending through the first port by using third transmit power and performing uplink sending through the second port by using the third transmit power, the total transmit power of the terminal device being the calculated transmit power when uplink sending is performed through the first port and the second port by using the third transmit power; or performing uplink sending through the first port by using the maximum transmit power supported by the first port and performing uplink sending through the second port by using third transmit power; or performing uplink sending through the first port by using third transmit power and performing uplink sending through the second port by using the maximum transmit power supported by the second port; or performing uplink sending through the first port by using the maximum transmit power supported by the first port and performing uplink sending through the second port by using the maximum transmit power supported by the second port.

34 . The method according to claim 29 , the first transmit power being represented by min{P max,j , 10 log({circumflex over (P)} CH −{circumflex over (P)} max,i )}, where
P max,j represents the maximum transmit power of the second port, {circumflex over (P)} CH represents a linear value of the calculated transmit power, the linear value of the calculated transmit power being determined based on the calculated transmit power, {circumflex over (P)} max,i represents a linear value of the maximum transmit power of the first port, the linear value of the maximum transmit power of the first port being determined based on the maximum transmit power of the first port.

35 . The method according to claim 29 , further comprising:
determining, by the terminal device, that the first port and the second port meet a specific condition: when the first information comprises the SNR, the specific condition comprises a difference between an SNR of the first port and an SNR of the second port is greater than a specified value, the SNR of the first port is greater than the SNR of the second port, and the specified value is greater than 0; when the first information comprises the uplink path loss, the specific condition comprises a difference between an uplink path loss of the second port and an uplink path loss of the first port is greater than a specified value, the uplink path loss of the second port is greater than the uplink path loss of the first port, and the specified value is greater than 0; when the first information comprises the RSSI, the specific condition comprises a difference between an RSSI of the first port and an RSSI of the second port is greater than a specified value, and the RSSI of the first port is greater than the RSSI of the second port, and the specified value is greater than 0; when the first information comprises the RSRP, the specific condition comprises a difference between RSRP of the first port and RSRP of the second port is greater than a specified value, the RSRP of the first port is greater than the RSRP of the second port, and the specified value is greater than 0; or when the first information comprises the RSCP, the specific condition comprises a difference between RSCP of the first port and RSCP of the second port is greater than a specified value, the RSCP of the first port is greater than the RSCP of the second port, and the specified

Assignees

• Huawei Tech Co Ltd

Inventors

• Jin Le
• Zhao Zhilin

Classifications

• H04W52/42

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

• H04W52/146 Primary

  Uplink power control · CPC title

• H04W52/24

  using SIR [Signal to Interference Ratio] or other wireless path parameters · CPC title

• H04W52/367

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

• H04W52/241

  taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo · CPC title