US 12,446,048 B2
Method and apparatus for multi-stage DCI for uplink precoding
Gilwon Lee, McKinney, TX (US); Md. Saifur Rahman, Plano, TX (US); and Eko Onggosanusi, Coppell, TX (US)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Sep. 22, 2022, as Appl. No. 17/934,520.
Claims priority of provisional application 63/278,786, filed on Nov. 12, 2021.
Claims priority of provisional application 63/253,648, filed on Oct. 8, 2021.
Prior Publication US 2023/0128411 A1, Apr. 27, 2023
Int. Cl. H04W 72/23 (2023.01); H04B 7/0456 (2017.01)
CPC H04W 72/23 (2023.01) [H04B 7/0456 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A user equipment (UE) comprising:
a transceiver configured to receive, via a two-stage downlink control information (DCI) framework, configuration information for transmission of an uplink (UL) signal, the configuration information including allocated resources for transmission of the UL signal and UL precoding information; and
a processor operably coupled to the transceiver, the processor configured to, based on the UL precoding information, apply UL precoding for the transmission of the UL signal, wherein:
a two-stage DCI framework includes a first-stage DCI X1 and a second-stage DCI X2,
the first-stage DCI X1 includes at least one of first information associated with the second-stage DCI and a first part of the configuration information,
the second-stage DCI X2 includes at least one of second information based on the first information and a second part of the configuration information,
X1 includes a first indicator to indicate a subset of a transmit precoding matrix index (TPMI) codebook,
X2 includes a TPMI selected from the subset of TPMI codebook for each sub-band (SB), and
the transceiver is further configured to transmit a precoded UL signal on the allocated resources according to the configuration information.