US 11,929,800 B2
Method and apparatus for multi-stage UL 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 Jun. 16, 2022, as Appl. No. 17/807,366.
Claims priority of provisional application 63/218,144, filed on Jul. 2, 2021.
Prior Publication US 2023/0017254 A1, Jan. 19, 2023
Int. Cl. H04B 7/0456 (2017.01)
CPC H04B 7/0456 (2013.01) 20 Claims
OG exemplary drawing
 
15. A method for operating a user equipment (UE), the method comprising:
receiving configuration information associated with resource allocation for an uplink (UL) transmission, the configuration information indicating:
allocated resources for the UL transmission, and
UL precoding information for the UL transmission on the allocated resources, wherein the UL precoding information indicates:
an update precoding matrix V, and
basis vectors and coefficients for the update precoding matrix V;
determining an UL precoding matrix for the UL transmission based on the update precoding matrix V and a previous UL precoding matrix;
performing the UL transmission on the allocated resources using the UL precoding matrix;
indicating the coefficients for the basis vectors using a phase codebook and an amplitude codebook; and
determining a first granularity of the amplitude codebook by a scaling factor β and a second granularity of a second amplitude codebook.