US 12,309,709 B2
Uplink full-power transmission method and device
Xiaodong Sun, Chang'an Dongguan (CN); Rakesh Tamrakar, Chang'an Dongguan (CN); and Peng Sun, Chang'an Dongguan (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed on Jan. 27, 2022, as Appl. No. 17/586,318.
Application 17/586,318 is a continuation of application No. PCT/CN2020/103592, filed on Jul. 22, 2020.
Claims priority of application No. 201910727566.7 (CN), filed on Aug. 7, 2019.
Prior Publication US 2022/0150841 A1, May 12, 2022
Int. Cl. H04W 52/14 (2009.01); H04L 5/00 (2006.01); H04W 52/36 (2009.01)
CPC H04W 52/146 (2013.01) [H04L 5/0048 (2013.01); H04W 52/367 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An uplink full-power transmission method, applied to a terminal device and comprising:
performing uplink transmission based on an uplink transmit power obtained through scaling by a power scaling coefficient, wherein the power scaling coefficient is determined based on a power control factor; wherein
the power control factor comprises at least one of the following: an uplink full-power transmission capability of the terminal device, a supported transmission precoding matrix indicator (TPMI) reported by the terminal device, a TPMI delivered by a network device, a working mode reported by the terminal device, or the number of antenna ports for each SRS resource in a sounding reference signal (SRS) resource set that is configured by the network device based on the working mode;
wherein the power scaling coefficient is determined in the following manner:
if the power control factor satisfies the following condition, determining the power scaling coefficient to be 1:
part of radio frequency branches of the terminal device supports full-power transmission, the number of antenna ports for each SRS resource in the SRS resource set is different, and the TPMI delivered by the network device falls within the TPMI reported by the terminal device; wherein
the full-power transmission is transmission based on a maximum transmit power of the terminal device.