US 12,218,727 B2
CSI feedback with low overhead
Nuan Song, Shanghai (CN)
Assigned to NOKIA TECHNOLOGIES OY, Espoo (FI)
Appl. No. 17/919,428
Filed by NOKIA TECHNOLOGIES OY, Espoo (FI)
PCT Filed Apr. 21, 2020, PCT No. PCT/CN2020/085940
§ 371(c)(1), (2) Date Oct. 17, 2022,
PCT Pub. No. WO2021/212327, PCT Pub. Date Oct. 28, 2021.
Prior Publication US 2023/0163824 A1, May 25, 2023
Int. Cl. H04B 7/06 (2006.01); H04L 5/00 (2006.01)
CPC H04B 7/0626 (2013.01) [H04L 5/0048 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A first device, comprising:
at least one processor; and
at least one memory including computer program code;
wherein the at least one memory and the computer program codes are configured to, with the at least one processor, cause the first device at least to:
in response to receiving, from a second device, a reference signal on a channel between the first device and the second device, obtain a first component and a second component from the reference signal, the first component and the second component being orthogonal to each other;
determine a first transformed component and a second transformed component for characterizing the channel by performing a transformation on the first component and the second component;
generate a set of parameters associated with characteristics of the channel by quantizing the first transformed component and the second transformed component;
transmit the set of parameters to the second device, and
receive, from the second device, a trigger for initiating the quantizing and transmitting the set of parameters, the trigger at least indicating a predetermined quantizing scheme for the reference signal.