Channel access priority class for multi-consecutive slots sidelink transmissions

1 . A method comprising:

determining, by a wireless device, a multi-consecutive slot transmission (MCSt) resource associated with transmission of a plurality of sidelink transport blocks (TBs), wherein:

each of the plurality of sidelink TBs is associated with at least one of a plurality of sidelink logical channels; and

each of the plurality of sidelink logical channels is associated with at least one channel access priority class (CAPC) value of a plurality of CAPC values; and

sending the plurality of sidelink TBs via the MCSt resource and based on at least one listen before talk (LBT) procedure that uses a CAPC value, of the plurality of CAPC values, that is determined based on:

a lowest CAPC value, or a highest CAPC value, among the plurality of CAPC values; and

whether the plurality of sidelink TBs comprises data from a sidelink control channel (SCCH).

2 . The method of claim 1 , wherein the plurality of sidelink TBs comprises data of the SCCH; and wherein the used CAPC value is determined based on:

selecting, based on the plurality of sidelink TBs, a first CAPC value among the plurality of CAPC values, wherein the first CAPC value indicates at least one of:

the lowest value among the plurality of CAPC values; or

a highest priority of channel access priority class to a shared spectrum.

3 . The method of claim 1 , wherein the plurality of sidelink TBs does not comprise data of the SCCH; and the used CAPC value is determined based on:

selecting, based on the plurality of sidelink TBs, a second CAPC value among the plurality of CAPC values, wherein the second CAPC value indicates at least one of:

the highest CAPC value among the plurality of CAPC values; or

a lowest priority of channel access priority class to a shared spectrum.

4 . The method of claim 1 , further comprising:

receiving at least one radio resource control (RRC) message comprising a plurality of sidelink configuration parameters, wherein each sidelink parameter of the plurality of sidelink configuration parameters indicates a sidelink logical channel, of the at least one of the plurality of sidelink logical channels, associated with the used CAPC value.

5 . The method of claim 1 , further comprising:

receiving at least one radio resource control (RRC) message comprising a plurality of sidelink configuration parameters indicating a sidelink resource pool, wherein the plurality of sidelink configuration parameters indicates at least one of:

time resources associated with the MCSt; or

frequency resources associated with the MCSt.

6 . The method of claim 5 , wherein:

the time resources indicate a quantity of symbols in a slot; and

the frequency resources indicate a quantity of resource block or interlaces.

7 . The method of claim 1 , wherein determining the MCSt resource comprises:

receiving downlink control information (DCI) indicating the MCSt resource.

8 . The method of claim 1 , wherein determining the MCSt resource comprises:

selecting the MCSt resource based on:

a MCSt resource selection procedure; or

a M single-slot resource selection procedure, wherein M indicates a quantity of transmission slots.

9 . The method of claim 1 , wherein data of the sidelink logical channel comprises at least one of a sidelink control message or sidelink traffic data; and wherein the method further comprises:

mapping the sidelink control message to a sidelink signaling radio bearer (SRB); and

mapping the sidelink traffic data to a sidelink data radio bearer (DRB).

10 . The method of claim 9 , wherein:

the sidelink SRB is linked to a sidelink control channel (SCCH); and

the sidelink DRB is linked to a sidelink traffic channel (STCH).

11 . A method comprising:

multiplexing, by a wireless device, at least one medium access control (MAC) service data unit (SDU) of a sidelink logical channel in each sidelink transport block (TB) of a plurality of sidelink TBs;

based on the plurality of sidelink TBs comprising data from a sidelink control channel (SCCH), determining at least one channel access priority class (CAPC) value among a plurality of CAPC values; and

sending the plurality of sidelink TBs via a multi-consecutive slot transmission (MCSt) resource and based on at least one listen before talk (LBT) procedure that uses the at least one determined CAPC value.

12 . The method of claim 11 , further comprising:

determining the MCSt resource associated with transmission of a plurality of sidelink TBs comprising data from a plurality of sidelink logical channels, wherein:

each of the plurality of sidelink TBs is associated with at least one of the plurality of sidelink logical channels; and

each of the plurality of sidelink logical channels is associated with the at least-one CAPC value.

13 . The method of claim 12 , wherein each of the plurality of sidelink TBs comprises data associated with at least one sidelink radio bearer; and

the data associated with at least one sidelink radio bearer comprises at least one of:

control data; or

a control message.

14 . The method of claim 11 , wherein the MCSt resource comprises a plurality of consecutive single-slot resources.

15 . A method comprising:

determining whether a plurality of sidelink transport blocks (TBs) of a multi-consecutive slot transmission (MCSt) comprises a sidelink signaling radio bearer (SRB), wherein:

the sidelink SRB is linked to a sidelink control channel (SCCH);

selecting, based on the determining and for the MCSt, at least one channel access priority class (CAPC) value among a plurality of CAPC values; and

sending, via the MCSt and based on at least one listen before talk (LBT) procedure that uses the at least one selected CAPC value, the plurality of sidelink TBs.

16 . The method of claim 15 , wherein each of the plurality of sidelink TBs comprises one or more medium access control-control elements (MAC-CEs).

17 . The method of claim 15 , wherein at least one of the plurality of sidelink TBs comprises one or more medium access control-control elements (MAC-CEs).

18 . The method of claim 15 , wherein selecting the at least one CAPC value comprises:

selecting, based on the plurality of sidelink TBs comprising one or more medium access control-control elements (MAC-CEs), a lowest CAPC value among the plurality of CAPC values.

19 . The method of claim 15 , further comprising:

determining, based on the selected at least one CAPC value, parameters of one or more LBT procedures, wherein the parameters of one or more LBT procedures comprises at least one of:

minimum contention window size;

maximum contention window size;

maximum duration of channel occupancy time (COT); or

a set of allowed contention window.

20 . The method of claim 15 , wherein sending the plurality of sidelink TBs comprises:

mapping a first sidelink TB of the plurality of sidelink TBs to a first slot of a MCSt resource;

mapping a second sidelink TB of the plurality of sidelink TBs to a second slot of the MCSt resource, wherein:

a CAPC value associated with the first sidelink TB is lower than the CAPE a CAPC value associated with the second sidelink TB; and

the first slot of the MCSt resource indicates a higher communication priority than the second slot of the MCSt resource.