RADIO AND AUDIO LOCALIZATION

• US 20160223640A1
• Filed: 02/03/2015
• Published: 08/04/2016
• Est. Priority Date: 02/03/2015
• Status: Active Grant

• Current Assignee: RPX Corporation
• Original Assignee: Nokia Technologies Oy (Nokia Corporation)
• Inventors: Vilermo, Miikka Tapani, Laaksonen, Lasse Juhani, Lehtiniemi, Arto Juhani, Tammi, Mikko Tapio
• Granted Patent: US 9,903,938 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01S 11/04 using angle measurements
• CPC Class Codes: G01S 11/14 using ultrasonic, sonic, or infrasonic waves
• CPC Class Codes: G01S 3/02 using radio waves
• CPC Class Codes: G01S 5/02585 at least one of the measurements being a non-radio measurement
• CPC Class Codes: G01S 5/0284 Relative positioning

Abstract

In some example embodiments there is provided a method. The method may include receiving, at a user equipment, at least one radio signal and at least one audio signal received via a microphone at the user equipment; and determining, by the user equipment, a distance between the user equipment and at least one other device by at least determining angle of arrival for the at least one radio signal and determining a time difference of arrival for the audio signal received via the microphone. Related systems, methods, and articles of manufacture are also described.

Claims

1. A method comprising:

receiving, at a user equipment, at least one radio signal and at least one audio signal received via a microphone at the user equipment; and

determining, by the user equipment, a distance between the user equipment and at least one other device by at least determining angle of arrival for the at least one radio signal and determining a time difference of arrival for the audio signal received via the microphone.

2. The method of claim 1, wherein the at least one radio signal is received at an antenna array.

3. The method of claim 1 further comprising:

determining, based on the determined angle of arrival information, at least one angle between the user equipment and the at least one other device.

4. The method of claim 1 further comprising:

selecting at least one candidate distance between the user equipment and the at least one other device, wherein the candidate distance represents an estimate determined from the at least one angle between the user equipment and the at least one other device.

5. The method of claim 1 further comprising:

determining at least one audio measured distance between the user equipment and the at least one other device based on at least the determined time difference of arrival for the audio signal received via the microphone.

6. The method of claim 1 further comprising:

normalizing the at least one audio measured distance to enable a comparison to at least one other audio measured distance.

7. The method of claim 7, wherein the normalizing further comprises:

forming a first ratio of the at least one audio measured distance to a corresponding candidate distance and forming a second ratio of the at least one other audio measured distance to another corresponding candidate distance.

8. The method of claim 8 further comprising:

comparing a magnitude of the first ratio to the second ratio to determine a best estimate of the distance.

9. An apparatus comprising:

at least one processor; and

at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following;

receive, at the apparatus, at least one radio signal and at least one audio signal received via a microphone at the apparatus; and

determine, by the apparatus, a distance between the apparatus and at least one other device, wherein the apparatus is configured to determine the distance by at least determine angle of arrival for the at least one radio signal and determine a time difference of arrival for the audio signal received via the microphone.

10. The apparatus of claim 9, wherein the at least one radio signal is received at an antenna array.

11. The apparatus of claim 9, wherein the apparatus is further configured to at least:

determine, based on the determined angle of arrival information, at least one angle between the apparatus and the at least one other device.

12. The apparatus of claim 9, wherein the apparatus is further configured to at least:

select at least one candidate distance between the apparatus and the at least one other device, wherein the candidate distance represents an estimate determined from the at least one angle between the apparatus and the at least one other device.

13. The apparatus of claim 9, wherein the apparatus is further configured to at least:

determine at least one audio measured distance between the apparatus and the at least one other device based on at least the determined time difference of arrival for the audio signal received via the microphone.

14. The apparatus of claim 9, wherein the apparatus is further configured to at least:

normalize the at least one audio measured distance to enable a comparison to at least one other audio measured distance.

15. The apparatus of claim 14, wherein the apparatus is further configured to normalize by at least:

form a first ratio of the at least one audio measured distance to a corresponding candidate distance and form a second ratio of the at least one other audio measured distance to another corresponding candidate distance.

16. The apparatus of claim 15, wherein the apparatus is further configured to at least:

compare a magnitude of the first ratio to the second ratio to determine a best estimate of the distance.

17. The apparatus of claim 9, wherein the apparatus comprises a user equipment.

18. A non-transitory computer-readable storage medium including computer-program code, which when executed by at least one processor causes operations comprising:

receiving, at a user equipment, at least one radio signal and at least one audio signal received via a microphone at the user equipment; and

determining, by the user equipment, a distance between the user equipment and at least one other device by at least determining angle of arrival for the at least one radio signal and determining a time difference of arrival for the audio signal received via the microphone.

19. (canceled)

20. (canceled)

21. (canceled)