IP Library › Granted Patent US 12690063

Granted Patent B2

US 12690063 · App. 17/969,548 · Granted Jul 21, 2026

Techniques for sidelink channel sensing with mini-slots

Inventors: Jung Ho Ryu (Fort Lee, NJ); Sony Akkarakaran (Poway, CA)

Assignee: QUALCOMM Incorporated

H04W74/0808

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Quick Facts

Patent No.: US 12690063
App. No.: 17/969,548
Granted: Jul 21, 2026
Kind: B2

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Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of a first slot-related channel sensing procedure to perform during channel sensing. The first slot-related channel sensing procedure may be one of multiple available slot-related channel sensing procedures. The first slot-related channel sensing procedure may indicate time interval increments in which to perform the channel sensing. The UE may perform the first slot-related channel sensing procedure based on the indication. The UE may perform the first slot-related channel sensing procedure in the time interval increments of a sidelink resource pool to identify a first time-frequency resource of the sidelink resource pool that is available for transmission of a sidelink message.

Claims (65)

1 . A method for wireless communications at a user equipment (UE), comprising:

receiving an indication of a first slot-related channel sensing procedure of a plurality of available slot-related channel sensing procedures to perform during channel sensing within a sidelink resource pool, the first slot-related channel sensing procedure indicating time interval increments in which to perform the channel sensing within the sidelink resource pool, wherein the plurality of available slot-related channel sensing procedures comprises a mini-slot-based channel sensing procedure associated with performing the channel sensing according to a first time interval increment having a mini-slot length within the sidelink resource pool and a slot-based channel sensing procedure associated with performing the channel sensing according to a second time interval increment having a slot length within the sidelink resource pool;

monitoring, during the first slot-related channel sensing procedure and based at least in part on the indication, time and frequency resources of the sidelink resource pool in accordance with the time interval increments indicated by the first slot-related channel sensing procedure to identify a first time-frequency resource of the sidelink resource pool that is available for transmission of a sidelink message; and

transmitting the sidelink message via the first time-frequency resource.

2 . The method of claim 1 , wherein monitoring the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure comprises:

receiving, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a sub-slot of the sidelink resource pool, wherein the sidelink message is transmitted using the first time-frequency resource that does not overlap with the sub-slot reserved by the sidelink control information based at least in part on a received power of the sidelink control information satisfying a threshold.

3 . The method of claim 2 , further comprising:

receiving an indication of a first priority associated with the sidelink message, wherein the threshold is based at least in part on the first priority associated with the sidelink message and a second priority associated with the sub-slot reserved by the sidelink control information.

4 . The method of claim 1 , wherein monitoring the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure comprises:

receiving, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a sub-slot of the sidelink resource pool, wherein the sidelink message is transmitted via the first time-frequency resource that does not overlap with a slot having a set of contiguous frequency resources that includes the sub-slot reserved by the sidelink control information.

5 . The method of claim 1 , wherein monitoring the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure comprises:

receiving, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a slot of the sidelink resource pool, wherein the sidelink message is transmitted via the first time-frequency resource that does not overlap with a sub-slot having a set of contiguous frequency resources that includes the slot reserved by the sidelink control information.

6 . The method of claim 1 , wherein monitoring the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure comprises:

receiving, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a first sub-slot of the sidelink resource pool, wherein the sidelink message is transmitted via the first time-frequency resource that does not overlap with a second sub-slot having a set of contiguous frequency resources that includes the first sub-slot reserved by the sidelink control information.

7 . The method of claim 1 , further comprising:

receiving an indication of one or more parameters associated with the first slot-related channel sensing procedure, wherein the first slot-related channel sensing procedure is performed in response to receiving the indication of the one or more parameters.

8 . The method of claim 7 , wherein the one or more parameters include one or more of the sidelink resource pool that is available for transmission of the sidelink message, a priority associated with the sidelink message, a packet delay budget associated with the sidelink message, or a quantity of contiguous frequency resources to be used for transmission of the sidelink message.

9 . The method of claim 1 , wherein the first slot-related channel sensing procedure indicates, to the UE, to perform one of slot-based channel sensing associated with the first time interval increment having the slot length or sub-slot-based channel sensing associated with the first time interval increment having the mini-slot length.

10 . An apparatus for wireless communications at a user equipment (UE), comprising:

a processor;

memory coupled with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

receive an indication of a first slot-related channel sensing procedure of a plurality of available slot-related channel sensing procedures to perform during channel sensing within a sidelink resource pool, the first slot-related channel sensing procedure indicating time interval increments in which to perform the channel sensing within the sidelink resource pool, wherein the plurality of available slot-related channel sensing procedures comprises a mini-slot-based channel sensing procedure associated with performing the channel sensing according to a first time interval increment having a mini-slot length within the sidelink resource pool and a slot-based channel sensing procedure associated with performing the channel sensing according to a second time interval increment having a slot length within the sidelink resource pool;

monitor, during the first slot-related channel sensing procedure and based at least in part on the indication, time and frequency resources of the sidelink resource pool in accordance with the time interval increments indicated by the first slot-related channel sensing procedure to identify a first time-frequency resource of the sidelink resource pool that is available for transmission of a sidelink message; and

transmit the sidelink message via the first time-frequency resource.

11 . The apparatus of claim 10 , wherein the instructions to monitor the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure are executable by the processor to cause the apparatus to:

receive, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a sub-slot of the sidelink resource pool, wherein the sidelink message is transmitted using the first time-frequency resource that does not overlap with the sub-slot reserved by the sidelink control information based at least in part on a received power of the sidelink control information satisfying a threshold.

12 . The apparatus of claim 11 , wherein the instructions are further executable by the processor to cause the apparatus to:

receive an indication of a first priority associated with the sidelink message, wherein the threshold is based at least in part on the first priority associated with the sidelink message and a second priority associated with the sub-slot reserved by the sidelink control information.

13 . The apparatus of claim 10 , wherein the instructions to monitor the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure are executable by the processor to cause the apparatus to:

receive, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a sub-slot of the sidelink resource pool, wherein the sidelink message is transmitted via the first time-frequency resource that does not overlap with a slot having a set of contiguous frequency resources that includes the sub-slot reserved by the sidelink control information.

14 . The apparatus of claim 10 , wherein the instructions to monitor the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure are executable by the processor to cause the apparatus to:

receive, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a slot of the sidelink resource pool, wherein the sidelink message is transmitted via the first time-frequency resource that does not overlap with a sub-slot having a set of contiguous frequency resources that includes the slot reserved by the sidelink control information.

15 . The apparatus of claim 10 , wherein the instructions to monitor the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure are executable by the processor to cause the apparatus to:

receive, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a first sub-slot of the sidelink resource pool, wherein the sidelink message is transmitted via the first time-frequency resource that does not overlap with a second sub-slot having a set of contiguous frequency resources that includes the first sub-slot reserved by the sidelink control information.

16 . The apparatus of claim 10 , wherein the instructions are further executable by the processor to cause the apparatus to:

receive an indication of one or more parameters associated with the first slot-related channel sensing procedure, wherein the first slot-related channel sensing procedure is performed in response to receiving the indication of the one or more parameters.

17 . The apparatus of claim 16 , wherein the one or more parameters include one or more of the sidelink resource pool that is available for transmission of the sidelink message, a priority associated with the sidelink message, a packet delay budget associated with the sidelink message, or a quantity of contiguous frequency resources to be used for transmission of the sidelink message.

18 . The apparatus of claim 10 , wherein the first slot-related channel sensing procedure indicates, to the UE, to perform one of slot-based channel sensing associated with the first time interval increment having the slot length or sub-slot-based channel sensing associated with the first time interval increment having the mini-slot length.

19 . An apparatus for wireless communications at a user equipment (UE), comprising:

means for receiving an indication of a first slot-related channel sensing procedure of a plurality of available slot-related channel sensing procedures to perform during channel sensing within a sidelink resource pool, the first slot-related channel sensing procedure indicating time interval increments in which to perform the channel sensing within the sidelink resource pool, wherein the plurality of available slot-related channel sensing procedures comprises a mini-slot-based channel sensing procedure associated with performing the channel sensing according to a first time interval increment having a mini-slot length within the sidelink resource pool and a slot-based channel sensing procedure associated with performing the channel sensing according to a second time interval increment having a slot length within the sidelink resource pool;

means for monitoring, during the first slot-related channel sensing procedure and based at least in part on the indication, time and frequency resources of the sidelink resource pool in accordance with the time interval increments indicated by the first slot-related channel sensing procedure to identify a first time-frequency resource of the sidelink resource pool that is available for transmission of a sidelink message; and

means for transmitting the sidelink message via the first time-frequency resource.

20 . The apparatus of claim 19 , wherein the means for monitoring the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure comprise:

means for receiving, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a sub-slot of the sidelink resource pool, wherein the sidelink message is transmitted using the first time-frequency resource that does not overlap with the sub-slot reserved by the sidelink control information based at least in part on a received power of the sidelink control information satisfying a threshold.

21 . The apparatus of claim 20 , further comprising:

means for receiving an indication of a first priority associated with the sidelink message, wherein the threshold is based at least in part on the first priority associated with the sidelink message and a second priority associated with the sub-slot reserved by the sidelink control information.

22 . The apparatus of claim 19 , wherein the means for monitoring the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure comprise:

means for receiving, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a sub-slot of the sidelink resource pool, wherein the sidelink message is transmitted via the first time-frequency resource that does not overlap with a slot having a set of contiguous frequency resources that includes the sub-slot reserved by the sidelink control information.

23 . The apparatus of claim 19 , wherein the means for monitoring the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure comprise:

means for receiving, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a slot of the sidelink resource pool, wherein the sidelink message is transmitted via the first time-frequency resource that does not overlap with a sub-slot having a set of contiguous frequency resources that includes the slot reserved by the sidelink control information.

24 . The apparatus of claim 19 , wherein the means for monitoring the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure comprise:

means for receiving, from a second UE during a sensing window monitored by the first slot-related channel sensing procedure, sidelink control information that reserves a first sub-slot of the sidelink resource pool, wherein the sidelink message is transmitted via the first time-frequency resource that does not overlap with a second sub-slot having a set of contiguous frequency resources that includes the first sub-slot reserved by the sidelink control information.

25 . The apparatus of claim 19 , further comprising:

means for receiving an indication of one or more parameters associated with the first slot-related channel sensing procedure, wherein the first slot-related channel sensing procedure is performed in response to receiving the indication of the one or more parameters.

26 . The apparatus of claim 25 , wherein the one or more parameters include one or more of the sidelink resource pool that is available for transmission of the sidelink message, a priority associated with the sidelink message, a packet delay budget associated with the sidelink message, or a quantity of contiguous frequency resources to be used for transmission of the sidelink message.

27 . The apparatus of claim 19 , wherein the first slot-related channel sensing procedure indicates, to the UE, to perform one of slot-based channel sensing associated with the first time interval increment having the slot length or sub-slot-based channel sensing associated with the first time interval increment having the mini-slot length.

28 . A non-transitory computer-readable medium storing code for wireless communications at a user equipment (UE), the code comprising instructions executable by a processor to:

monitor, based at least in part on the indication, time and frequency resources of the sidelink resource pool in accordance with the time interval increments indicated by the first slot-related channel sensing procedure to identify a first time-frequency resource of the sidelink resource pool that is available for transmission of a sidelink message; and

transmit the sidelink message via the first time-frequency resource.

29 . The non-transitory computer-readable medium of claim 28 , wherein the instructions to monitor the time and frequency resources of the sidelink resource pool during the first slot-related channel sensing procedure are executable by the processor to:

30 . The non-transitory computer-readable medium of claim 29 , wherein the instructions are further executable by the processor to: