Electronic device and method of estimating channel impulse response

Patent metadata

Field	Value
Publication number	US-12348335-B2
Application number	US-202318095750-A
Country	US
Kind code	B2
Filing date	Jan 11, 2023
Priority date	Nov 22, 2021
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

In one embodiment, an electronic device may include a plurality of antennas, at least one wireless communication module configured to transmit and receive wireless signals through the plurality of antennas, and at least one processor operatively connected to the wireless communication module. The at least one wireless communication module or the at least one processor may be configured to, based on one or more ultra-wide band (UWB) signals received from a target device, obtain first pieces of phase information corresponding to first channel impulse response (CIR) indices and second pieces of phase information corresponding to second CIR indices, and determine information on the one or more UWB signals based on a slope between the first pieces of phase information and a slope between the second pieces of phase information.

First claim

What is claimed is:

1. An electronic device comprising:
a plurality of antennas;
at least one wireless communication module configured to transmit and receive wireless signals through the plurality of antennas; and
at least one processor operatively connected to the wireless communication module,
wherein the at least one wireless communication module or the at least one processor is configured to:
based on one or more ultra-wide band (UWB) signals received from a target device, obtain first pieces of phase information corresponding to first channel impulse response (CIR) indices and second pieces of phase information corresponding to second CIR indices, and
determine information on the one or more UWB signals based on a slope between the first pieces of phase information and a slope between the second pieces of phase information, and

wherein the wireless communication module or the at least one processor is further configured to:
obtain first slope values of the first pieces of phase information,
obtain second slope values of the second pieces of phase information,
determine whether a first difference between the first slope values satisfies a first condition,
determine whether a second difference between the second slope values satisfies a second condition, and
determine the information on the one or more UWB signals based on whether the first difference between the first slope values satisfies the first condition and whether the second difference between the second slope values satisfies the second condition.

2. The electronic device of claim 1 , wherein the information on the one or more UWB signals comprises a confidence level for an angle of arrival of the one or more UWB signals and/or a communication environment of the one or more UWB signals.

3. The electronic device of claim 1 , wherein the wireless communication module or the at least one processor is further configured to determine the information on the one or more UWB signals based on a pattern of the slope between the first pieces of phase information and a pattern of the slope between the second pieces of phase information.

4. The electronic device of claim 1 , wherein the first pieces of phase information are obtained on a first CIR of a first UWB signal received through one of the plurality of antennas, and
the second pieces of phase information are obtained on a second CIR of a second UWB signal received through another one of the plurality of antennas.

5. The electronic device of claim 4 , wherein the first CIR indices comprise a first CIR index on the first CIR, a previous CIR index of the first CIR index, and a subsequent CIR index after the first CIR index, and
the second CIR indices comprise a second CIR index on the second CIR, a previous CIR index of the second CIR index, and a subsequent CIR index after the second CIR index.

6. The electronic device of claim 5 , wherein the first CIR index corresponds to a first path in the first CIR, and
the second CIR index corresponds to a first path in the second CIR.

7. The electronic device of claim 1 , wherein the wireless communication module or the at least one processor is further configured to:
determine whether a communication environment of the one or more UWB signals is a line-of-sight (LoS) environment or a non-LoS (NLoS) environment based on whether the first difference between the first slope values satisfies the first condition and whether the second difference between the second slope values satisfies the second condition.

8. The electronic device of claim 1 , wherein an output of direction information of the target device for a service executed by the at least one processor is determined based on the information on the one or more UWB signals.

9. An operating method of an electronic device, the operating method comprising:
based on one or more ultra-wide band (UWB) signals received from a target device, obtaining first pieces of phase information corresponding to first channel impulse response (CIR) indices and second pieces of phase information corresponding to second CIR indices; and
determining information on the one or more UWB signals based on a slope between the first pieces of phase information and a slope between the second pieces of phase information, and
wherein the determining further comprises:
obtaining first slope values of the first pieces of phase information;
obtaining second slope values of the second pieces of phase information,
determining whether a first difference between the first slope values satisfies a first condition;
determining whether a second difference between the second slope values satisfies a second condition; and
determining the information on the one or more UWB signals based on whether the first difference between the first slope values satisfies the first condition and whether the second difference between the second slope values satisfies the second condition.

10. The method of claim 9 , wherein the information on the one or more UWB signals comprises a confidence level for an angle of arrival of the one or more UWB signals and/or a communication environment of the one or more UWB signals.

11. The method of claim 9 , wherein the determining further comprises determining the information on the one or more UWB signals based on a pattern of the slope between the first pieces of phase information and a pattern of the slope between the second pieces of phase information.

12. The method of claim 9 , wherein the first pieces of phase information are obtained on a first CIR of a first UWB signal received through one of a plurality of antennas comprised in the electronic device, and
the second pieces of phase information are obtained on a second CIR of a second UWB signal received through another one of the plurality of antennas.

13. The method of claim 12 , wherein the first CIR indices comprise a first CIR index on the first CIR, a previous CIR index of the first CIR index, and a subsequent CIR index after the first CIR index, and
the second CIR indices comprise a second CIR index on the second CIR, a previous CIR index of the second CIR index, and a subsequent CIR index after the second CIR index.

14. The method of claim 13 , wherein the first CIR index corresponds to a first path in the first CIR, and
the second CIR index corresponds to a first path in the second CIR.

15. The method of claim 9 , wherein the determining further comprises:
determining whether a communication environment of the one or more UWB signals is a line-of-sight (LoS) environment or a non-LoS (NLoS) environment based on whether the first difference between the first slope values satisfies the first condition and whether the second difference between the second slope values satisfies the second condition.

16. The method of claim 9 , wherein an output of direction information of the target device for a service executed by the electronic device is determined based on the information on the one or more UWB signals.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Hong Sukgi
• Kim Hyunchul
• Park Jungsik
• Yang Yi
• Lee Woosup
• Choe Hana

Classifications

• H04L25/0212

  of impulse response · CPC title

• H04B1/71637

  Receiver aspects (H04B1/7183 takes precedence) · CPC title

• H04L25/0204 Primary

  of multiple channels · CPC title