Electronic device for performing ranging and method thereof

Patent metadata

Field	Value
Publication number	US-11435462-B2
Application number	US-202016915363-A
Country	US
Kind code	B2
Filing date	Jun 29, 2020
Priority date	Jul 1, 2019
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

A method and an electronic device for ranging are provided. An ultra-wideband (UWB) signal is received from an external device through a first antenna. A communication state between the external device and the electronic device is identified using information about communication quality included in the UWB signal. A signal received through a second antenna is identified by decoding the received signal based on the identified communication state. A distance between the electronic device and the external device is determined based on whether the received signal is a low frequency (LF) signal.

First claim

What is claimed is:

1. An electronic device comprising:
a first antenna;
a second antenna;
a communication module configured to transmit and receive ultra-wideband (UWB) signals using the first antenna;
a power transceiver module configured to transmit and receive signals related to charging of the electronic device and low frequency (LF) signals, using the second antenna;
a processor operatively connected to the communication module, the power transceiver module, the first antenna, and the second antenna,
wherein the communication module is configured to:
receive an UWB signal from an external device;
identify a communication state between the external device and the electronic device using information about communication quality included in the UWB signal;
identify a signal received by the power transceiver module by decoding the received signal based on the identified communication state; and
determine a distance between the electronic device and the external device based on whether the received signal is an LF signal.

2. The electronic device of claim 1 , wherein the communication module is further configured to identify that the electronic device is located within a specified distance from the external device, based on the received signal being the LF signal when the information about the communication quality is less than a specified first threshold value, and, when the information about the communication quality is less than a specified second threshold value and the identified communication state is a non-line of sight (NLOS) environment.

3. The electronic device of claim 2 , further comprising:
a memory operatively connected to the processor,
wherein the memory stores instructions that, when executed, cause the processor to:
provide the communication module with a result of identifying whether the power transceiver module receives the LF signal from the external device.

4. The electronic device of claim 1 , wherein the communication module is further configured to:
determine the distance between the external device and the electronic device by using the UWB signal based on the information about the communication quality being greater than or equal to a specified second threshold value.

5. The electronic device of claim 1 , wherein:
the power transceiver module comprises a decoder, and the power transceiver module is configured to:
decode the signal received through the second antenna by the power transceiver module, using the decoder, and determine whether the received signal is the LF signal or a signal related to charging the electronic device; and

the communication module is configured to:
receive a result of identifying the LF signal by the power transceiver module, and identify that the power transceiver module receives the LF signal from the external device.

6. The electronic device of claim 1 , wherein the second antenna comprises a coil antenna for charging the electronic device.

7. The electronic device of claim 6 , wherein the power transceiver module is configured to:
decode the signal received through the second antenna to determine whether the signal is the LF signal or a signal related to charging the electronic device.

8. The electronic device of claim 1 , wherein the communication module is further configured to:
identify that the electronic device is located inside the external device based on the reception of the LF signal.

9. The electronic device of claim 1 , wherein the communication module is further configured to:
determine the distance between the external device and the electronic device using the UWB signal based on the information about the communication quality being greater than or equal to a specified first threshold value and less than a specified second threshold value.

10. A ranging method of an electronic device, the ranging method comprising:
receiving a ultra-wideband (UWB) signal from an external device through a first antenna;
identifying a communication state between the external device and the electronic device using information about communication quality included in the UWB signal;
identifying a signal received through a second antenna by decoding the received signal based on the identified communication state; and
determining a distance between the electronic device and the external device based on whether the received signal is a low frequency (LF) signal.

11. The ranging method of claim 10 , wherein identifying the communication state comprises:
identifying that the electronic device is located within a specified distance from the external device, based on the received signal being the LF signal when the information about the communication quality is less than a specified first threshold value, and, when the information about the communication quality is less than a specified second threshold value and the identified communication state is a non-line of sight (NLOS) environment.

12. The ranging method of claim 11 , further comprising:
determining the distance between the external device and the electronic device by using the UWB signal based on the information about the communication quality being greater than or equal to a specified second threshold value.

13. The ranging method of claim 11 , further comprising:
receiving, from a processor of the electronic device, a result of determining whether the LF signal is received from an LF antenna of the external device.

14. The ranging method of claim 11 , wherein determining the electronic device is within a specified distance from the external device comprises:
identifying that the electronic device is located inside the external device.

15. The ranging method of claim 10 , further comprising:
determining the distance between the external device and the electronic device using the UWB signal, based on the information about the communication quality being greater than or equal to a specified first threshold value.

16. An electronic device comprising:
a first antenna;
a second antenna;
a communication module configured to transmit and receive ultra-wideband (UWB) signals using the first antenna;
a power transceiver module configured to transmit and receive signals related to charging of the electronic device and low frequency (LF) signals using the second antenna; and
a processor operatively connected to the communication module, the power transceiver module, the first antenna, and the second antenna,
wherein the communication module is configured to:
receive an UWB signal from an external device through the first antenna;
identify a communication state between the external device and the electronic device using information about communication quality included in the UWB signal;
identify that the power transceiver module receives an LF signal from the external device by decoding a signal received at the power transceiver module through the second antenna, when the communication state is a non-line of sight (NLOS) environment and the information about the communication quality is less than a specified first threshold value,
determine a distance between the external device and the electronic device by using the UWB signal, when the information about the communication quality is greater than or equal to a specified second threshold value, and
identify that the electronic device is located inside the external device when the LF signal is identified.

17. The electronic device of claim 16 , wherein the communication module is further configured to determine the distance between the external device and the electronic

Assignees

• Samsung Electronics Co Ltd

Inventors

• Hong Sukgi
• Choi Sehwan
• Kang Moonseok
• Kim Hyunchul
• Park Jungsik
• Yang Yi
• Yoon Sejong
• LEE Jonghyo
• Jang Jonghoon
• Jeong Seongah

Classifications

• H04B1/7163 Primary

  using impulse radio · CPC title

• G01S5/011 Primary

  Identifying the radio environment · CPC title

• G01S5/0218

  Multipath in signal reception · CPC title

• G01S11/023 Primary

  using impedance elements varying with distance · CPC title

• G01S2205/01

  specially adapted for specific applications · CPC title