Method and device for hybrid beamformer for supporting multiple numerologies in wireless communication system

Patent metadata

Field	Value
Publication number	US-2026074751-A1
Application number	US-202519387103-A
Country	US
Kind code	A1
Filing date	Nov 12, 2025
Priority date	May 12, 2023
Publication date	Mar 12, 2026
Grant date	—

Abstract

The disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting higher data transmission rates than a 4th generation (4G) communication system such as long term evolution (LTE). A method performed by a base station in a wireless communication system is provided. The method includes acquiring, by the base station, channel information from one or more terminals using one or more numerologies, based on the channel information, generating, by the base station, a first precoding matrix for the one or more terminals, based on the first precoding matrix, calculating, by the base station, a first transmission rate, based on the first precoding matrix, calculating, by the base station, first power corresponding to input power of a radio frequency (RF) stage, based on the first power and the channel information, generating, by the base station, a second precoding matrix, based on the second precoding matrix, calculating, by the base station, a second transmission rate, in case that the first transmission rate is greater than or equal to the second transmission rate, generating, by the base station based on the first precoding matrix, a first signal corresponding to signals to be transmitted through multiple antennas of the base station, and transmitting, by the base station, the first signal through the multiple antennas.

First claim

What is claimed is:

1 . A method performed by a base station in a wireless communication system, the method comprising:
acquiring, by the base station, channel information from one or more terminals using one or more numerologies; based on the channel information, generating, by the base station, a first precoding matrix for the one or more terminals; based on the first precoding matrix, calculating, by the base station, a first transmission rate; based on the first precoding matrix, calculating, by the base station, first power corresponding to input power of a radio frequency (RF) stage; based on the first power and the channel information, generating, by the base station, a second precoding matrix; based on the second precoding matrix, calculating, by the base station, a second transmission rate; in case that the first transmission rate is greater than or equal to the second transmission rate, generating, by the base station based on the first precoding matrix, a first signal corresponding to signals to be transmitted through multiple antennas of the base station; and transmitting, by the base station, the first signal through the multiple antennas.

2 . The method of claim 1 , further comprising:
in case that the first transmission rate is smaller than the second transmission rate, calculating, by the base station based on the second precoding matrix, second power corresponding to the input power of the RF stage; based on the second power, generating, by the base station, a third precoding matrix; based on the third precoding matrix, calculating, by the base station, a third transmission rate; in case that the second transmission rate is greater than or equal to the third transmission rate, generating, by the base station based on the second precoding matrix, a second signal corresponding to signals to be transmitted through the multiple antennas of the base station; and transmitting, by the base station, the second signal through the multiple antennas.

3 . The method of claim 1 ,
wherein the channel information includes information on channels between the multiple antennas and multiple reception antennas of the one or more terminals, and wherein each of the multiple reception antennas uses any one of the one or more numerologies.

4 . The method of claim 1 , wherein the first precoding matrix is based on a first RF beamformer and a first baseband beamformer.

5 . The method of claim 4 ,
wherein the first RF beamformer is determined based on f (p) included in Equation a expressed below:

f

(
p
)

=

1

M
t

⁢

e

(

1
⁢
j
⁢

∠
⁡
(

A

(

n

R
⁢
F

)

f

(

p
-
1

)

)

)

,

Equation
⁢

a

wherein, in Equation a, M t indicates a total number of antennas of the base station, function <(a) indicates a function for extracting phases of elements of vector a, n RF indicates a base station RF chain index, and f (p) indicates a beamforming vector for a p th repetition process,
wherein, in Equation a above, A (n RF ) is expressed as in Equation b below:

A

(

n

R
⁢
F

)

=
Δ

{

(

I
-

f

R
⁢
F

,

n

R

Assignees

• Samsung Electronics Co Ltd
• Korea Advanced Inst Sci & Tech

Inventors

• Park Joosung
• Park Hyuncheol
• Son Hyunsoo

Classifications

• H04B7/0617

  for beam forming · CPC title

• H04B7/0456 Primary

  Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting · CPC title

• H04L27/26

  Systems using multi-frequency codes (H04L27/32 takes precedence) · CPC title

• H04B7/0426

  Power distribution · CPC title

• H04B7/06

  at the transmitting station · CPC title