IP Library › Granted Patent US 12689983
Granted Patent B2
US 12689983 · App. 18/262,142 · Granted Jul 21, 2026

Energy pattern-based dynamic frequency selection for high-band spectrum sharing

Inventors: Siyi Chen (Beijing, CN); Arumugam Chendamarai Kannan (San Diego, CA); Changlong Xu (Beijing, CN); Jing Sun (San Diego, CA); Xiaoxia Zhang (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04W52/0229H04W52/0251H04W52/028H04W74/0808
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Quick Facts
Patent No.
US 12689983
App. No.
18/262,142
Granted
Jul 21, 2026
Kind
B2
Abstract

Methods, systems, and devices for wireless communications are described. A first wireless device may determine an energy pattern corresponding to a characteristic of the first wireless device. The energy pattern may include at least two sub-periods of different energy levels. The first wireless device may transmit the energy pattern on a channel (e.g., an unlicensed channel) prior to transmitting a first message on the channel to indicate the upcoming message to other devices. A second wireless device may monitor the channel during energy detection intervals and may detect the energy pattern. The second wireless device may determine the characteristic of the first wireless device based on detecting the energy pattern and may modify timing for transmission of a second message on the channel based on determining the characteristic. The first wireless device may transmit the first message on the channel based on transmitting the energy pattern.

Claims (60)

1 . A method for wireless communications implemented by a first wireless device, comprising:

monitoring a channel during a plurality of periodic energy detection intervals;

detecting a first energy pattern via the channel based at least in part on the monitoring, wherein the first energy pattern comprises two or more different energy levels;

determining a characteristic corresponding to the first energy pattern and associated with a second wireless device transmitting via the channel based at least in part on the two or more different energy levels of the first energy pattern;

modifying timing for transmission of a message via the channel based at least in part on the determining the characteristic associated with the second wireless device transmitting via the channel; and

periodically transmitting a second energy pattern via the channel based at least in part on a periodicity for energy pattern signaling for the first wireless device, wherein the periodicity is based at least in part on a second characteristic associated with the first wireless device.

2 . The method of claim 1 , wherein the determining the characteristic comprises:

determining the two or more different energy levels of the first energy pattern.

3 . The method of claim 1 , wherein the determining the characteristic comprises:

determining the characteristic corresponding to the first energy pattern based at least in part on a difference between the two or more different energy levels of the first energy pattern, a duration of the first energy pattern, or both.

4 . The method of claim 1 , wherein the characteristic comprises a radio access technology associated with the second wireless device, the method further comprising:

determining that the radio access technology associated with the second wireless device has priority over a second radio access technology associated with the first wireless device, wherein the modifying the timing for the transmission of the message via the channel comprises delaying the timing for the transmission of at least a portion of the message via the channel based at least in part on a non-occupancy period for the channel and the radio access technology associated with the second wireless device having priority over the second radio access technology associated with the first wireless device.

5 . The method of claim 1 , wherein the characteristic comprises a priority level associated with the second wireless device, the method further comprising:

determining that the priority level associated with the second wireless device is greater than a second priority level associated with the first wireless device, wherein the modifying the timing for the transmission of the message via the channel comprises delaying the timing for the transmission of at least a portion of the message via the channel based at least in part on a non-occupancy period for the channel and the priority level associated with the second wireless device being greater than the second priority level associated with the first wireless device.

6 . The method of claim 1 , wherein the monitoring the channel comprises:

monitoring the channel according to a sensing duration corresponding to a second radio access technology, a second priority level, or both associated with the first wireless device.

7 . The method of claim 1 , wherein the monitoring the channel comprises:

performing a beam sweep procedure for a plurality of communication beams, wherein the first energy pattern is detected on at least one communication beam of the plurality of communication beams based at least in part on the beam sweep procedure.

8 . The method of claim 7 , wherein the monitoring the channel comprises:

monitoring the channel using each communication beam of the plurality of communication beams for a beam-specific sensing duration, wherein the beam-specific sensing duration is based at least in part on a duration of the first energy pattern.

9 . The method of claim 1 , wherein the characteristic associated with the second wireless device is configured for the second wireless device or is based at least in part on an amount of traffic on the channel.

10 . The method of claim 1 , wherein the channel corresponds to a shared millimeter wave band.

11 . A first wireless device for wireless communications, comprising:

at least one processor;

at least one memory coupled with the at least one processor; and

instructions stored in the at least one memory and executable by the at least one processor to cause the first wireless device to:

monitor a channel during a plurality of periodic energy detection intervals;

detect a first energy pattern via the channel based at least in part on the monitoring, wherein the first energy pattern comprises two or more different energy levels;

determine a characteristic corresponding to the first energy pattern and associated with a second wireless device transmitting via the channel based at least in part on the two or more different energy levels of the first energy pattern;

modify timing for transmission of a message via the channel based at least in part on determining the characteristic associated with the second wireless device transmitting via the channel; and

periodically transmit a second energy pattern via the channel based at least in part on a periodicity for energy pattern signaling for the first wireless device, wherein the periodicity is based at least in part on a second characteristic associated with the first wireless device.

12 . The first wireless device of claim 11 , wherein the instructions to determine the characteristic are executable by the at least one processor to cause the first wireless device to determine the two or more different energy levels of the first energy pattern.

13 . The first wireless device of claim 11 , wherein the instructions to determine the characteristic are executable by the at least one processor to cause the first wireless device to determine the characteristic corresponding to the first energy pattern based at least in part on a difference between the two or more different energy levels of the first energy pattern, a duration of the first energy pattern, or both.

14 . The first wireless device of claim 11 , wherein the characteristic comprises a radio access technology associated with the second wireless device, and the instructions are further executable by the at least one processor to cause the first wireless device to determine that the radio access technology associated with the second wireless device has priority over a second radio access technology associated with the first wireless device, wherein the instructions to modify the timing for the transmission of the message via the channel are executable by the at least one processor to cause the first wireless device to delay the timing for the transmission of at least a portion of the message via the channel based at least in part on a non-occupancy period for the channel and the radio access technology associated with the second wireless device having priority over the second radio access technology associated with the first wireless device.

15 . The first wireless device of claim 11 , wherein the characteristic comprises a priority level associated with the second wireless device, and the instructions are further executable by the at least one processor to cause the first wireless device to determine that the priority level associated with the second wireless device is greater than a second priority level associated with the first wireless device, wherein the modifying the timing for the transmission of the message via the channel comprises delaying the timing for the transmission of at least a portion of the message via the channel based at least in part on a non-occupancy period for the channel and the priority level associated with the second wireless device being greater than the second priority level associated with the first wireless device.

16 . The first wireless device of claim 11 , wherein the instructions to monitor the channel are executable by the at least one processor to cause the first wireless device to monitor the channel according to a sensing duration corresponding to a second radio access technology, a second priority level, or both associated with the first wireless device.

17 . The first wireless device of claim 11 , wherein the instructions to monitor the channel are executable by the at least one processor to cause the first wireless device to perform a beam sweep procedure for a plurality of communication beams, wherein the first energy pattern is detected on at least one communication beam of the plurality of communication beams based at least in part on the beam sweep procedure.

18 . The first wireless device of claim 17 , wherein the instructions to monitor the channel are executable by the at least one processor to cause the first wireless device to monitor the channel using each communication beam of the plurality of communication beams for a beam-specific sensing duration, wherein the beam-specific sensing duration is based at least in part on a duration of the first energy pattern.

19 . The first wireless device of claim 11 , wherein the characteristic associated with the second wireless device is configured for the second wireless device or is based at least in part on an amount of traffic on the channel.

20 . The first wireless device of claim 11 , wherein the channel corresponds to a shared millimeter wave band.

21 . A first wireless device for wireless communications, comprising:

means for monitoring a channel during a plurality of periodic energy detection intervals;

means for detecting a first energy pattern via the channel based at least in part on the monitoring, wherein the first energy pattern comprises two or more different energy levels;

means for determining a characteristic corresponding to the first energy pattern and associated with a second wireless device transmitting via the channel based at least in part on the two or more different energy levels of the first energy pattern;

means for modifying timing for transmission of a message via the channel based at least in part on the determining the characteristic associated with the second wireless device transmitting via the channel; and

means for periodically transmitting a second energy pattern via the channel based at least in part on a periodicity for energy pattern signaling for the first wireless device, wherein the periodicity is based at least in part on a second characteristic associated with the first wireless device.

22 . A non-transitory computer-readable medium storing code for wireless communications at a first wireless device, the code comprising instructions executable by one or more processors to:

monitor a channel during a plurality of periodic energy detection intervals;

detect a first energy pattern via the channel based at least in part on the monitoring, wherein the first energy pattern comprises two or more different energy levels;

determine a characteristic corresponding to the first energy pattern and associated with a second wireless device transmitting via the channel based at least in part on the two or more different energy levels of the first energy pattern;

modify timing for transmission of a message via the channel based at least in part on determining the characteristic associated with the second wireless device transmitting via the channel; and

periodically transmit a second energy pattern via the channel based at least in part on a periodicity for energy pattern signaling for the first wireless device, wherein the periodicity is based at least in part on a second characteristic associated with the first wireless device.

23 . The non-transitory computer-readable medium of claim 22 , wherein the instructions to determine the characteristic are executable by the one or more processors to:

determine the two or more different energy levels of the first energy pattern.

24 . The non-transitory computer-readable medium of claim 22 , wherein the instructions to determine the characteristic are executable by the one or more processors to:

determine the characteristic corresponding to the first energy pattern based at least in part on a difference between the two or more different energy levels of the first energy pattern, a duration of the first energy pattern, or both.

25 . The non-transitory computer-readable medium of claim 22 , wherein the characteristic comprises a radio access technology associated with the second wireless device, and the instructions are further executable by the one or more processors to:

determine that the radio access technology associated with the second wireless device has priority over a second radio access technology associated with the first wireless device, wherein the modifying the timing for the transmission of the message via the channel comprises delaying the timing for transmission of at least a portion of the message via the channel based at least in part on a non-occupancy period for the channel and the radio access technology associated with the second wireless device having priority over the second radio access technology associated with the first wireless device.

26 . The non-transitory computer-readable medium of claim 22 , wherein the characteristic comprises a priority level associated with the second wireless device, and the instructions are further executable by the one or more processors to:

determine that the priority level associated with the second wireless device is greater than a second priority level associated with the first wireless device, wherein the modifying the timing for the transmission of the message via the channel comprises delaying the timing for the transmission of at least a portion of the message via the channel based at least in part on a non-occupancy period for the channel and the priority level associated with the second wireless device being greater than the second priority level associated with the first wireless device.