Granted Patent B2

US 12,474,429 · App. 18/002,210 · Granted Nov 18, 2025

Inventors: Sangrim Lee (Seoul, KR); Hojae Lee (Seoul, KR); Kijun Jeon (Seoul, KR)

Assignee: LG ELECTRONICS INC.

G01S3/043G01S3/48

Abstract

Claims (20)

1 . A method for a received signal angle estimation, the method performed by a first communication device and comprising:

performing a random access procedure with a second communication device for an initial access, wherein the random access procedure comprises transmitting a random access preamble to the second communication device, receiving a random access response from the second communication device, performing a scheduled transmission to the second communication device using an uplink grant in the random access response, and monitoring a contention resolution;

receiving a reference signal from the second communication device through a 1-bit analog-to-digital converter (ADC); and

performing an angle estimation of the reference signal,

wherein the angle estimation is performed based on vertical arrangement estimation and horizontal arrangement estimation based on antennas arranged in two dimensions at the first communication device.

2 . The method of claim 1 , wherein the vertical arrangement estimation and the horizontal arrangement estimation are performed simultaneously based on a divider.

3 . The method of claim 1 , wherein the vertical arrangement estimation and the horizontal arrangement estimation are selectively performed based on a switch.

4 . The method of claim 1 , wherein the angle estimation is an estimation of angle of departure or an estimation angle of arrival.

5 . A first communication device comprising:

at least one transceiver;

at least one memory; and

at least one processor operably connectable to the at least one transceiver and the at least one memory,

wherein the at least one memory stores instructions that, based on being executed by the at least one processor, cause the at least one processor to perform operations comprising:

performing a random access procedure with a second communication device for an initial access, wherein the random access procedure comprises transmitting a random access preamble to the second communication device, receiving a random access response from the second communication device, performing a scheduled transmission to the second communication device using an uplink grant in the random access response, and monitoring a contention resolution;

receiving a reference signal from the second communication device through a 1-bit analog-to-digital converter (ADC); and

performing an angle estimation of the reference signal,

wherein the angle estimation is performed based on vertical arrangement estimation and horizontal arrangement estimation based on antennas arranged in two dimensions at the first communication device.

6 . The first communication device of claim 5 , wherein the vertical arrangement estimation and the horizontal arrangement estimation are performed simultaneously based on a divider.

7 . The first communication device of claim 5 , wherein the vertical arrangement estimation and the horizontal arrangement estimation are selectively performed based on a switch.

8 . The first communication device of claim 5 , wherein the angle estimation is an estimation of angle of departure or an estimation angle of arrival.

Assignments (1)

Continuity (1)

References Cited (14)