Sidelink coordination information transmissions/receptions
A wireless device receives a message configuring one or more time intervals for transmitting coordination information to a second wireless device, where the coordination information indicates a set of resources for one or more sidelink transmissions by the second wireless device. The wireless device selects, from the one or more time intervals, a time interval based on at least a priority level of the one or more sidelink transmissions. The wireless device transmits, to the second wireless device, first coordination information indicating a first set of resources for the one or more sidelink transmissions. The wireless device transmits, to the second wireless device and based on the time interval, second coordination information indicating a second set of resources for the one or more sidelink transmissions.
1 . A method comprising:
receiving, by a first wireless device, a message configuring one or more time intervals for transmitting coordination information to a second wireless device, wherein the coordination information indicates a set of resources for one or more sidelink transmissions by the second wireless device;
selecting, from the one or more time intervals, a time interval based on at least a priority level of the one or more sidelink transmissions;
transmitting, to the second wireless device, first coordination information indicating a first set of resources for the one or more sidelink transmissions; and
transmitting, to the second wireless device and based on the time interval, second coordination information indicating a second set of resources for the one or more sidelink transmissions.
2 . The method of claim 1 , further comprising transmitting, to the second wireless device, a second message indicating the time interval.
3 . The method of claim 2 , wherein a first-stage sidelink control information of the second message indicates the time interval.
4 . The method of claim 2 , wherein:
a second-stage sidelink control information of the second message indicates the time interval; or
a medium access control control element (MAC CE) of the second message indicates the time interval.
5 . The method of claim 1 , further comprising selecting the first set of resources based on a first resource selection procedure.
6 . The method of claim 1 , wherein the selecting further comprises selecting the time interval based on comparison of the priority level of the one or more sidelink transmissions and a priority threshold associated with the time interval, the message configuring one or more priority thresholds comprising the priority threshold.
7 . The method of claim 1 , wherein the first message further configures at least one of:
one or more reservation intervals of a sidelink resource pool associated with the one or more time intervals;
one or more channel busy ratio (CBR) thresholds associated with the one or more time intervals;
one or more counter thresholds associated with the one or more time intervals; or
one or more thresholds of negative acknowledgements (NACKs) associated with the one or more time intervals.
8 . The method of claim 7 , wherein the selecting further comprises selecting the time interval based on at least one of:
the reservation interval of the one or more sidelink transmissions and the one or more reservation intervals of the sidelink resource pool associated with the one or more time intervals;
a CBR measurement of a sidelink resource pool and the one or more CBR thresholds associated with the one or more time intervals;
a counter value and the one or more counter thresholds associated with the one or more time intervals; or
a number of NACKs and the one or more thresholds of NACKs associated with the one or more time intervals.
9 . The method of claim 1 , wherein the first set of resources are different than the second set of resources comprising at least one of:
a preferred resource of the second wireless device for the one or more sidelink transmissions; or
a non-preferred resource of the second wireless device for the one or more sidelink transmissions.
10 . The method of claim 1 , further comprising selecting the second set of resources based on a second resource selection procedure, wherein the second set of resources comprise at least one of:
a preferred resource of the second wireless device for the one or more sidelink transmissions; or
a non-preferred resource of the second wireless device for the one or more sidelink transmissions.
11 . A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive a message configuring one or more time intervals for transmitting coordination information to a second wireless device, wherein the coordination information indicates a set of resources for one or more sidelink transmissions by the second wireless device;
select, from the one or more time intervals, a time interval based on at least a priority level of the one or more sidelink transmissions;
transmit, to the second wireless device, first coordination information indicating a first set of resources for the one or more sidelink transmissions; and
transmit, to the second wireless device and based on the time interval, second coordination information indicating a second set of resources for the one or more sidelink transmissions.
12 . The wireless device of claim 11 , further comprising instructions that, when executed by the one or more processors, cause the wireless device to transmit, to the second wireless device, a second message indicating the time interval.
13 . The wireless device of claim 12 , wherein a first-stage sidelink control information of the second message indicates the time interval.
14 . The wireless device of claim 12 , wherein:
a second-stage sidelink control information of the second message indicates the time interval; or
a medium access control control element (MAC CE) of the second message indicates the time interval.
15 . The wireless device of claim 11 , further comprising instructions that, when executed by the one or more processors, cause the wireless device to select the first set of resources based on a first resource selection procedure.
16 . The wireless device of claim 11 , wherein selecting the time interval further comprises selecting the time interval based on comparison of the priority level of the one or more sidelink transmissions and a priority threshold associated with the time interval, the message configuring one or more priority thresholds comprising the priority threshold.
17 . The wireless device of claim 11 , wherein the first message further configures at least one of:
one or more reservation intervals of a sidelink resource pool associated with the one or more time intervals;
one or more channel busy ratio (CBR) thresholds associated with the one or more time intervals;
one or more counter thresholds associated with the one or more time intervals; or
one or more thresholds of negative acknowledgements (NACKs) associated with the one or more time intervals.
18 . The wireless device of claim 17 , wherein selecting the time interval further comprises selecting the time interval based on at least one of:
the reservation interval of the one or more sidelink transmissions and the one or more reservation intervals of the sidelink resource pool associated with the one or more time intervals;
a CBR measurement of a sidelink resource pool and the one or more CBR thresholds associated with the one or more time intervals;
a counter value and the one or more counter thresholds associated with the one or more time intervals; or
a number of NACKs and the one or more thresholds of NACKs associated with the one or more time intervals.
19 . The wireless device of claim 11 , wherein the first set of resources are different than the second set of resources comprising at least one of:
a preferred resource of the second wireless device for the one or more sidelink transmissions; or
a non-preferred resource of the second wireless device for the one or more sidelink transmissions.
20 . A system comprising:
a first wireless device comprising one or more first processors and memory storing instructions that, when executed by the one or more first processors, cause the first wireless device to:
transmit a message configuring one or more time intervals; and
a second wireless device comprising one or more second processors and memory storing instructions that, when executed by the one or more second processors, cause the second wireless device to:
receive, from the first wireless device, the message configuring the one or more time intervals for transmitting coordination information to the first wireless device, wherein the coordination information indicates a set of resources for one or more sidelink transmissions by the first wireless device;
select, from the one or more time intervals, a time interval based on at least a priority level of the one or more sidelink transmissions;
transmit, to the first wireless device, first coordination information indicating a first set of resources for the one or more sidelink transmissions; and
transmit, to the first wireless device and based on the time interval, second coordination information indicating a second set of resources for the one or more sidelink transmissions.