Wireless resource selection
Wireless resources may be determined for communications between wireless devices. A wireless device may select resources based on measuring one or more channels (e.g., associated with sidelink transmission, feedback transmission, etc.). Resource selection may comprise exclusion of certain resources being used for other communications and/or exclusion or selection of resources based on one or more priorities.
1. A method comprising:
receiving, by a first wireless device via a first resource occurring in a sensing time period, control information indicating assignment of a second resource, occurring in a selection time period, for wireless communication by a second wireless device;
determining a received power of one or more feedback channel resources, in the sensing time period, associated with the first resource;
determining a third resource that occurs in the selection time period, wherein the third resource excludes the second resource based on the received power of the one or more feedback channel resources satisfying a threshold; and
transmitting, by the first wireless device via the third resource, a message to a third wireless device.
2. The method of claim 1 , wherein the determining the third resource comprises:
selecting the third resource from among a candidate resource set such that one or more reserved resources are excluded from selection as the third resource.
3. The method of claim 1 , further comprising receiving, by the first wireless device, at least one configuration parameter indicating at least one of:
the sensing time period; or
the selection time period.
4. The method of claim 1 , wherein the determining the received power of the one or more feedback channel resources associated with the first resource comprises:
measuring a received power of one or more physical sidelink feedback channel (PSFCH) resources associated with the first resource.
5. The method of claim 1 , wherein the control information indicates one or more resource reservations of a candidate resource set, and wherein determining the third resource comprises excluding each resource, of the one or more resource reservations of the candidate resource set, that is associated with a feedback channel resource comprising a transmission with a received power that is greater than the threshold.
6. The method of claim 1 , wherein the determining the third resource is further based on at least one of:
a reference signal received power (RSRP), of the received control information, being greater than a second threshold; or
the received power of the one or more feedback channel resources being greater than the threshold.
7. The method of claim 1 , further comprising:
receiving an indication of a priority associated with the second resource, wherein the determining the third resource is further based on at least one of:
the priority associated with the second resource; or
a priority associated with the message.
8. A method comprising:
receiving, by a first wireless device, at least one configuration parameter for selection of one or more resources to communicate with a second wireless device, wherein the at least one configuration parameter indicates a sensing time period and a selection time period;
receiving, via a first resource occurring in the sensing time period, control information indicating assignment of a second resource, occurring in the selection time period, for wireless communication by a third wireless device;
determining a third resource that occurs in the selection time period, wherein the third resource excludes the second resource based on a received power of one or more feedback channel resources, in the sensing time period and associated with the first resource, satisfying a threshold; and
transmitting, by the first wireless device via the third resource, a message to the second wireless device.
9. The method of claim 8 , further comprising:
determining the received power of the one or more feedback channel resources associated with the first resource.
10. The method of claim 9 , wherein the determining the received power of the one or more feedback channel resources associated with the first resource comprises:
measuring a received power of one or more physical sidelink feedback channel (PSFCH) resources associated with the first resource.
11. The method of claim 8 , wherein the determining the third resource comprises:
selecting the third resource from among a candidate resource set such that one or more reserved resources of the candidate resource set are excluded from selection as the third resource.
12. The method of claim 8 , wherein the control information indicates one or more resource reservations of a candidate resource set, and wherein determining the third resource comprises excluding each resource, of the one or more resource reservations of the candidate resource set, that is associated with a feedback channel resource comprising a transmission with a received power that is greater than the threshold.
13. The method of claim 8 , wherein the determining the third resource is further based on at least one of:
a reference signal received power (RSRP), of the received control information, being greater than a second threshold; or
the received power of the one or more feedback channel resources being greater than the threshold.
14. The method of claim 8 , further comprising:
receiving an indication of a priority associated with the second resource, wherein the determining the third resource is further based on at least one of:
the priority associated with the second resource; or
a priority associated with the message.
15. A method comprising:
receiving, by a first wireless device, at least one configuration parameter for selection of one or more resources to communicate with a second wireless device, wherein the at least one configuration parameter indicates a sensing time period for sensing transmission from a third wireless device;
determining a first resource from a candidate resource set in a selection time period, wherein determining the first resource comprises:
receiving control information via a second resource occurring in the sensing time period, wherein the control information indicates one or more resource reservations of the candidate resource set; and
based on a measurement of one or more feedback channel resources, in the sensing time period and associated with the second resource, excluding resources associated with the one or more resource reservations; and
transmitting, by the first wireless device via the first resource, a message to the second wireless device.
16. The method of claim 15 , further comprising determining the measurement of the one or more feedback channel resources associated with the second resource by measuring a received power of one or more physical sidelink feedback channel (PSFCH) resources associated with the second resource.
17. The method of claim 15 , wherein the determining the first resource comprises selecting the first resource from the candidate resource set such that one or more reserved resources of the candidate resource set are excluded from selection as the first resource.
18. The method of claim 15 , wherein the determining the first resource comprises excluding each resource, of the candidate resource set, that is associated with a feedback channel resource comprising a transmission with a received power that is greater than a threshold.
19. The method of claim 15 , wherein the determining the first resource is further based on at least one of:
a reference signal received power (RSRP), of the received control information, being greater than a first threshold; or
a received power of the one or more feedback channel resources being greater than a second threshold.
20. The method of claim 15 , further comprising:
receiving an indication of a priority associated with the second resource, wherein the determining the first resource is further based on at least one of:
the priority associated with the second resource; or
a priority associated with the message.