IP Library Granted Patent US 12,477,581
Granted Patent B2
US 12,477,581 · App. 18/762,361 · Granted Nov 18, 2025

Systems and methods for performing coexistence operations in wireless spectrums

Inventors: Carlos Horacio Aldana (Mountain View, CA); Sam Padinjaremannil Alex (Dublin, CA); Abhishek Kumar Agrawal (Bellevue, WA); Claudio Da Silva (Portland, OR)
Assignee: Meta Platforms Technologies, LLC
H04W74/0816H04W72/1263H04W74/0866
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Quick Facts
Patent No.
US 12,477,581
App. No.
18/762,361
Granted
Nov 18, 2025
Kind
B2
Abstract

Systems and methods for performing listen-before-talk (LBT) operations include a first wireless communication device which schedules a data burst comprising a plurality of chirps for transmitting on a channel to a second device. The wireless communication device may perform an LBT operation on the channel between the first device and the second device to determine that the channel is available, prior to transmitting a first chirp of the plurality of chirps. The wireless communication device may transmit the first chirp on the channel responsive to performing the LBT operation.

Claims (30)

1 . A method, comprising:

performing, by a first wireless communication device, according to a duty cycle, a listen-before-talk (LBT) operation on a channel between the first wireless communication device and a second device to determine that the channel is available, prior to transmitting a first signal comprising a first chirp of a plurality of chirps of a data burst; and

transmitting, by the first wireless communication device, the first signal on the channel responsive to performing the LBT operation.

2 . The method of claim 1 , further comprising scheduling, by the first communication device, a plurality of signals for transmitting on the channel, the plurality of signals corresponding to a data burst.

3 . The method of claim 2 , further comprising determining the duty cycle for the plurality of signals.

4 . The method of claim 1 , further comprising:

performing, by the first wireless communication device, a second LBT operation on the channel following the transmitting of the first signal and prior to transmitting a second signal; and

transmitting, by the first wireless communication device, the second signal responsive to performing the second LBT function.

5 . The method of claim 1 , wherein the first signal is one of a plurality of signals, wherein the method further comprises further comprising performing, by the first wireless communication device, a respective LBT operation on the channel prior to transmitting each of the plurality of chirps of the data burst.

6 . The method of claim 1 , wherein performing the LBT function prior to transmitting the first signal comprises performing up to a predefined number of LBT operations on the channel to determine that the channel is available, prior to transmitting the first signal.

7 . The method of claim 1 , further comprising comparing, by the first wireless communication device, the duty cycle to a threshold, wherein the LBT function is initiated responsive to the duty cycle being greater than or equal to the threshold.

8 . The method of claim 1 , wherein transmitting the first signal comprises transmitting, by the first wireless communication device, the first signal on the channel responsive to determining that the channel is clear of interference within a threshold criterion.

9 . The method of claim 1 , wherein performing the LBT function on the channel between the first wireless communication device and the second device is based on a beam width for the first wireless communication device satisfying a threshold criterion.

10 . A first device comprising:

a wireless communication device configured to communicate data with a second device located in an environment of the first device; and

one or more processors configured to:

perform, via the wireless communication device, according to a duty cycle, a listen-before-talk (LBT) operation on a channel between the first device and the second device to determine that the channel is available, prior to transmitting a first signal comprising a first chirp of a plurality of chirps of a data burst; and

transmit, via the wireless communication device, the first signal on the channel responsive to performing the LBT operation.

11 . The first device of claim 10 , wherein the one or more processors are configured to schedule a plurality of signals for transmitting on the channel, the plurality of signals corresponding to a data burst.

12 . The first device of claim 11 , wherein the one or more processors are configured to determine the duty cycle for the plurality of signals.

13 . The first device of claim 10 , wherein the one or more processors are configured to:

perform, via the wireless communication device, a second LBT operation on the channel following the transmitting of the first signal and prior to transmitting a second signal; and

transmitting, via the wireless communication device, the second signal responsive to performing the second LBT function.

14 . The first device of claim 10 , wherein the first signal is one of a plurality of signals, wherein the one or more processors are configured to perform a respective LBT operation on the channel prior to transmitting each of the plurality of chirps of the data burst.

15 . The first device of claim 10 , wherein performing the LBT function prior to transmitting the first signal comprises performing up to a predefined number of LBT operations on the channel to determine that the channel is available, prior to transmitting the first signal.

16 . The first device of claim 10 , wherein the one or more processors are configured to compare the duty cycle to a threshold, wherein the LBT function is initiated responsive to the duty cycle being greater than or equal to the threshold.

17 . The first device of claim 10 , wherein performing the LBT function on the channel is based on a beam width satisfying a threshold criterion.

18 . A non-transitory computer readable medium storing instructions that, when executed by one or more processors of a wireless communication device, cause the one or more processors to:

perform, according to a duty cycle, a listen-before-talk (LBT) operation on a channel between the first device and the second device to determine that the channel is available, prior to transmitting a first signal comprising a first chirp of a plurality of chirps of a data burst; and

transmit, via a transmitter of the wireless communication device, the first signal on the channel responsive to performing the LBT operation.

Assignments (2)
CHANGE OF NAME Recorded Oct 20, 2025
From: FACEBOOK TECHNOLOGIES, LLC
To: META PLATFORMS TECHNOLOGIES, LLC
Reel/Frame 073164/0799 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 14, 2024
From: ALDANA, CARLOS HORACIO; ALEX, SAM PADINJAREMANNIL; AGRAWAL, ABHISHEK KUMAR; DA SILVA, CLAUDIO
To: FACEBOOK TECHNOLOGIES, LLC
Reel/Frame 068277/0332 →
Continuity (3)
Continuation 17679917 · Feb 24, 2022
Provisional Application 63165289 · Mar 24, 2021
Related Publication 20240357655A1 · Oct 24, 2024
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