IP Library › Granted Patent US 12665683
Granted Patent B2
US 12665683 · App. 18/581,443 · Granted Jun 23, 2026

Method of channel sounding antenna calibration

Inventors: Aaron Adler (Rochester Hills, MI); Leo Lanctot (South Lyon, MI); Yohay Buchbut (Pardes Hanna, IL); John Sergakis (Bloomfield Hills, MI)
Assignee: GM Global Technology Operations LLC
H04B17/11H04B17/221
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Quick Facts
Patent No.
US 12665683
App. No.
18/581,443
Granted
Jun 23, 2026
Kind
B2
Abstract

A computer-implemented method that, when executed by data processing hardware, causes the data processing hardware to perform operations comprising detecting channel sounding between a first low energy communication device and a second low energy communication device, determining a number of antenna paths between two or more antennas coupled to each of the first low energy communication device and the second low energy communication device, configuring a link layer configuration and an interface protocol of the first low energy communication device and the second low energy communication device such that at least one mode-0 step is assigned to each antenna path if the number of antenna paths is greater than three, and executing antenna calibration for a channel sounding procedure at the first low energy communication device and second low energy communication device according to the link layer configuration and the interface protocol.

Claims (38)

1 . A computer-implemented method that, when executed by data processing hardware, causes the data processing hardware to perform operations comprising:

detecting channel sounding between a first low energy communication device and a second low energy communication device;

determining a number of antenna paths between two or more antennas coupled to each of the first low energy communication device and the second low energy communication device;

configuring a link layer configuration and an interface protocol of the first low energy communication device and the second low energy communication device such that at least one mode-0 step is assigned to each antenna path if the number of antenna paths is greater than three; and

executing antenna calibration for a channel sounding procedure at the first low energy communication device and second low energy communication device according to the link layer configuration and the interface protocol.

2 . The method of claim 1 , wherein the at least one mode-0 step further comprises adjusting frequency and timing of each of the antenna paths to improve reliability and accuracy of communication between the first and second low energy communication devices.

3 . The method of claim 1 , wherein executing antenna calibration further comprises calibrating transmit and receive chains of the first low energy communication device and the second low energy communication device.

4 . The method of claim 3 , wherein executing antenna calibration for the channel sounding procedure further comprises calibrating frequency of each antenna path.

5 . The method of claim 3 , wherein executing antenna calibration for the channel sounding procedure further comprises calibrating round trip timing for each antenna path.

6 . The method of claim 3 , wherein executing antenna calibration for the channel sounding procedure further comprises calibrating a first amplifier of the first low energy communication device and a second amplifier of the second low energy communication device automatically.

7 . The method of claim 6 , wherein calibrating the first and second amplifiers of the first and second low energy communication devices further comprises adjusting an automatic gain control of the first and second amplifiers.

8 . A system, comprising:

a vehicle comprising a first low energy communication device comprising data processing hardware and memory hardware in communication with a transceiver coupled to two or more antennas;

a mobile device comprising a second low energy communication device comprising data processing hardware and memory hardware in communication with a transceiver coupled to two or more antennas;

the memory hardware of the first and second low energy communication devices storing instructions that, when executed on the data processing hardware, cause the data processing hardware to perform operations comprising:

detecting channel sounding between the first low energy communication device and the second low energy communication device;

determining a number of antenna paths between two or more antennas coupled to each of the first low energy communication device and the second low energy communication device;

configuring a link layer configuration and an interface protocol of the first low energy communication device and the second low energy communication device such that at least one mode-0 step is assigned to each antenna path if the number of antenna paths is greater than three; and

executing antenna calibration for a channel sounding procedure at the first low energy communication device and second low energy communication device according to the link layer configuration and the interface protocol.

9 . The system of claim 8 , wherein the at least one mode-0 step further comprises adjusting frequency and timing of each of the antenna paths to improve reliability and accuracy of communication between the first and second low energy communication devices.

10 . The system of claim 8 , wherein executing antenna calibration further comprises calibrating transmit and receive chains of the first low energy communication device and the second low energy communication device.

11 . The system of claim 10 , wherein executing antenna calibration for the channel sounding procedure further comprises calibrating frequency of each antenna path.

12 . The system of claim 10 , wherein executing antenna calibration for the channel sounding procedure further comprises calibrating round trip timing for each antenna path.

13 . The system of claim 10 , wherein executing antenna calibration for the channel sounding procedure further comprises calibrating a first amplifier of the first low energy communication device and a second amplifier of the second low energy communication device.

14 . The system of claim 13 , wherein calibrating the first and second amplifiers of the first and second low energy communication devices further comprises adjusting an automatic gain control of the first and second amplifiers.

15 . A communication system, comprising:

a first low energy communication device comprising a first amplifier, data processing hardware, and memory hardware in communication with a transceiver coupled to two or more antennas;

a second low energy communication device comprising data processing hardware and memory hardware in communication with a transceiver coupled to two or more antennas;

the memory hardware of the first and second low energy communication devices storing instructions that, when executed on the data processing hardware, cause the data processing hardware to perform operations comprising:

detecting channel sounding between the first low energy communication device and the second low energy communication device;

determining a number of radio frequency antenna paths between two or more antennas coupled to each of the first low energy communication device and the second low energy communication device;

configuring a link layer configuration and an interface protocol of the first low energy communication device and the second low energy communication device such that at least one mode-0 step is assigned to each antenna path if the number of antenna paths is greater than three; and

executing radio frequency antenna calibration for a channel sounding procedure at the first low energy communication device and second low energy communication device according to the link layer configuration and the interface protocol.

16 . The system of claim 15 , wherein the at least one mode-0 step further comprises adjusting frequency and timing of each of the antenna paths to improve reliability and accuracy of communication between the first and second low energy communication devices.

17 . The system of claim 15 , wherein executing radio frequency antenna calibration further comprises calibrating transmit and receive chains of the first low energy communication device and the second low energy communication device.

18 . The system of claim 17 , wherein executing radio frequency antenna calibration for the channel sounding procedure further comprises calibrating frequency of each antenna path.

19 . The system of claim 15 , wherein executing radio frequency antenna calibration for the channel sounding procedure further comprises calibrating the first amplifier and the second amplifier.

20 . The system of claim 19 , wherein calibrating the first and second amplifiers of the first and second low energy communication devices further comprises adjusting an automatic gain control of the first and second amplifiers.