Voice signal receiving method using Bluetooth low power in wireless communication system, and apparatus therefor

Patent metadata

Field	Value
Publication number	US-11903056-B2
Application number	US-202017595009-A
Country	US
Kind code	B2
Filing date	May 11, 2020
Priority date	May 10, 2019
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

In the present disclosure, a method comprising: receiving a first advertisement message for measuring a declination angle between devices; measuring each declination angle between a reference point set in the control device and positions of at least one device based on the first advertisement message, wherein the positions of the at least one device are respectively adjusted such that each declination angle satisfies a specific angle for receiving a voice signal, based on the measured respective declination angles; receiving each of a first voice signals based on the respective adjusted positions from the at least one device; and measuring a volume of the received first voice signal, respectively, wherein based on the measured volume, an audio signal output angle of the at least one device is adjusted such that an audio signal received by the control device is incident at right angles to the control device.

First claim

What is claimed is:

1. A method for a control device to receive a voice signal from at least one device in a short-range wireless communication system, the method comprising:
receiving a first advertisement message for measuring a declination angle between devices from the at least one device, respectively;
measuring each declination angle between a reference point set in the control device and positions of the at least one device based on the first advertisement message, wherein the positions of the at least one device are respectively adjusted such that each declination angle satisfies a specific angle for receiving a voice signal, based on the measured respective declination angles;
receiving each of a first voice signals based on the respective adjusted positions from the at least one device; and
measuring a volume of the received first voice signal, respectively,
wherein based on the measured volume, an audio signal output angle of the at least one device is adjusted such that an audio signal received by the control device is incident at right angles to the control device, respectively.

2. The method of claim 1 , further comprising:
receiving a second voice signal, from the at least one device, based on (i) the respectively adjusted positions and (ii) the respectively adjusted voice signal output angle of the at least one device.

3. The method of claim 2 ,
wherein the specific declination is calculated based on the distance between the plurality of antennas, the wavelength of the second advertisement message each broadcast through the plurality of antennas, and a phase difference at a receiving end of the specific device between the second advertisement messages, respectively broadcast through the plurality of antennas.

4. The method of claim 3 ,
wherein the positions of the at least one device are adjusted further based on the declination information each received from the at least one device.

5. The method of claim 1 , further comprising:
receiving, respectively from the at least one device, a second advertisement message for establishing a connection for measuring the volume of the first voice signal;
transmitting a connection request message to the at least one device based on the second advertisement message, respectively; and
receiving, respectively from the at least one device, a connection response message in response to the connection request message.

6. The method of claim 5 ,
wherein the first advertisement message includes a data field for the control device to measure the respective first declination angle, and
wherein the data field is a constant tone extension (CTE) field.

7. The method of claim 6 ,
wherein the CTE field is a sequence of bits in which ‘0’ and ‘1’ are repeated.

8. The method of claim 7 ,
wherein the second advertisement message does not include the CTE field.

9. The method of claim 1 ,
wherein each of the declination angles is calculated based on a distance between a plurality of antennas included in the control device, a wavelength of the first advertisement message transmitted by the at least one device, and a phase difference between the first advertisement messages respectively received at a side of the plurality of antenna.

10. The method of claim 9 , further comprising:
broadcasting, to the at least one device, a second advertisement message for measuring an angle between devices through the plurality of antennas;
receiving a connection request message from the at least one device, respectively;
transmitting, to the at least one device, a connection response message in response to the connection request message, respectively; and
receiving, respectively from the at least one device, each of the declination information, wherein each of the declination information includes information on a specific declination angle between the reference point set in the control device and a location of a specific device among the at least one device, and
wherein the specific declination angle is measured based on the second advertisement message.

11. A control device for receiving a voice signal from at least one device in a short-range wireless communication system, the control device comprising:
a transmitter for transmitting a radio signal;
a receiver for receiving a radio signal; and
a processor operatively connected to the transmitter and the receiver;
wherein the processor is configured to control:
the receiver to receive a first advertisement message for measuring a declination angle between devices from the at least one device, respectively;
to measure each declination angle between a reference point set in the control device and positions of the at least one device based on the first advertisement message,
wherein the positions of the at least one device are respectively adjusted such that each declination angle satisfies a specific angle for receiving a voice signal, based on the measured respective declination angles;
the receiver to receive each of a first voice signals based on the respective adjusted positions from the at least one device; and
to measure a volume of the received first voice signal, respectively,
wherein based on the measured volume, an audio signal output angle of the at least one device is adjusted such that an audio signal received by the control device is incident at right angles to the control device, respectively.

12. The control device of claim 11 ,
wherein the processor is further configured to control:
the receiver to receive a second voice signal, from the at least one device, based on (i) the respectively adjusted positions and (ii) the respectively adjusted voice signal output angle of the at least one device.

13. The control device of claim 11 ,
wherein the processor is further configured to control:
the receiver to receive, respectively from the at least one device, a second advertisement message for establishing a connection for measuring the volume of the first voice signal;
the transmitter to transmit a connection request message to the at least one device based on the second advertisement message, respectively; and
the receiver to receive, respectively from the at least one device, a connection response message in response to the connection request message.

14. The control device of claim 13 ,
wherein the first advertisement message includes a data field for the control device to measure the respective first declination angle, and
wherein the data field is a constant tone extension (CTE) field.

15. The control device of claim 14 ,
wherein the CTE field is a sequence of bits in which ‘0’ and ‘1’ are repeated.

Assignees

• Lg Electronics Inc

Inventors

• Lee Hyeonjae
• Lim Jinkwon
• Song Taeyoung

Classifications

• H04W76/14 Primary

  Direct-mode setup · CPC title

• H04S3/008

  in which the audio signals are in digital form, i.e. employing more than two discrete digital channels (data reduction aspects thereof based on psychoacoustics G10L19/02) · CPC title

• H04S7/30

  Control circuits for electronic adaptation of the sound field · CPC title

• H04S2400/01

  Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved · CPC title

• H04S7/301 Primary

  Automatic calibration of stereophonic sound system, e.g. with test microphone · CPC title