Resource selection method and apparatus, electronic device and storage medium
View Patent ↗The present application relates on a resource selection method and apparatus, an electronic device and a storage medium, where if the maximum number of DMRS ports corresponding to a PSSCH is at least two, the UE compares an RSRP of a channel with a preset received power threshold, and determines whether to perform resource exclusion in a resource selection window of the UE according to a comparison result, thereby determining an implementation method where comparison with SL-RSRP is performed according to measured RSRP values of two or more DMRS ports when the PSSCH is two-layer transmission, and it is also possible to compare a measured RSRP value of a DMRS port with the SL-RSRP for resource selection when the PSSCH is two-layer transmission, so that the resource selection method can be applied in a variety of scenarios.
1. A resource selection method, the method comprising:
comparing, by a user equipment (UE), a reference signal received power (RSRP) of a channel with a preset received power threshold if a maximum number of demodulation reference signal (DMRS) ports corresponding to a physical sidelink shared channel (PSSCH) is at least two; wherein the channel is a physical sidelink control channel (PSCCH) sensed by the UE or a PSSCH scheduled by the PSCCH sensed by the UE, and the maximum number of DMRS ports is a maximum number of DMRS ports of the PSSCH scheduled by the PSCCH sensed by the UE, or a maximum number of DMRS ports of a PSSCH transmitted in a resource pool used by the UE; and
determining whether to perform resource exclusion in a resource selection window of the UE according to a comparison result;
wherein the maximum number of DMRS ports corresponding to the PSSCH being at least two, comprises:
the resource pool used by the UE is configured as that an RSRP of a PSSCH scheduled by a sensed PSCCH is used to compare with the received power threshold; and
a field corresponding to a number of DMRS ports in sidelink control information (SCI) transmitted in the PSCCH sensed by the UE is a preset value.
2. The resource selection method according to claim 1 , wherein the preset value is 1.
3. The resource selection method according to claim 1 , wherein the comparing, by the UE, the RSRP of the channel with the preset received power threshold comprises:
comparing, by the UE, an RSRP of the PSCCH sensed with the received power threshold.
4. The resource selection method according to claim 1 , wherein the comparing, by the UE, the signal received power RSRP of the channel with the preset received power threshold comprises:
comparing, by the UE, an RSRP of a PSSCH with the received power threshold; wherein the PSSCH is the PSSCH scheduled by the PSCCH sensed by the UE.
5. The resource selection method according to claim 4 , wherein the comparing, by the UE, the RSRP of the PSSCH with the received power threshold comprises:
decreasing, by the UE, the received power threshold according to a preset adjustment value to obtain a decreased received power threshold; and
comparing, by the UE, the RSRP of the PSSCH with the decreased received power threshold.
6. The resource selection method according to claim 4 , wherein the comparing, by the UE, the RSRP of the PSSCH with the received power threshold comprises:
increasing, by the UE, the RSRP of the PSSCH according to a preset adjustment value to obtain an increased RSRP of the PSSCH; and
comparing, by the UE, the increased RSRP of the PSSCH with the received power threshold.
7. The resource selection method according to claim 1 , wherein the comparing, by the UE, the signal received power RSRP of the channel with the preset received power threshold comprises:
comparing, by the UE, an average value of RSRPs of respective DMRS ports of a PSSCH with the received power threshold; wherein the PSSCH is the PSSCH scheduled by the PSCCH sensed by the UE.
8. The resource selection method according to claim 1 , wherein the comparing, by the UE, the RSRP of the channel with the preset received power threshold comprises:
comparing, by the UE, a sum of RSRPs of respective DMRS ports of a PSSCH with the received power threshold; wherein the PSSCH is the PSSCH scheduled by the PSCCH sensed by the UE.
9. The resource selection method according to claim 8 , wherein the comparing, by the UE, the sum of the RSRPs of respective DMRS ports of the PSSCH with the received power threshold comprises:
comparing, by the UE, a sum of PSSCH-RSRP 1000 and PSSCH-RSRP 1001 with the received power threshold; wherein the PSSCH-RSRP 1000 and the PSSCH-RSRP 1001 are two RSRP values measured respectively according to two DMRS ports of the PSSCH.
10. The resource selection method according to claim 8 , wherein the determining whether to perform resource exclusion in the resource selection window of the UE according to the comparison result comprises:
performing resource exclusion in the resource selection window of the UE if the comparison result is that the sum of the RSRPs of respective DMRS ports of the PSSCH is greater than the received power threshold.
11. The resource selection method according to claim 1 , wherein the comparing, by the UE, the RSRP of the channel with the preset received power threshold comprises:
comparing, by the UE, an RSRP of at least one DMRS port of a PSSCH with the received power threshold; wherein the PSSCH is the PSSCH scheduled by the PSCCH sensed by the UE.
12. The resource selection method according to claim 1 , wherein the performing resource exclusion in the resource selection window of the UE comprises:
excluding a target resource in the resource selection window, wherein the target resource is a resource reserved by sidelink control information (SCI) in the PSCCH sensed by the UE.
13. An electronic device, comprising:
a processor, a memory, and a transceiver, the processor, the memory, and the transceiver communicating with each other through an internal connection path, wherein:
the memory stores program code; and
the processor calls the program code stored in the memory to cooperate with the transceiver to:
compare a reference signal received power (RSRP) of a channel with a preset received power threshold if a maximum number of demodulation reference signal (DMRS) ports corresponding to a physical sidelink shared channel (PSSCH) is at least two; wherein the channel is a physical sidelink control channel (PSCCH) sensed by a user equipment (UE) or a PSSCH scheduled by the PSCCH sensed by the UE, and the maximum number of DMRS ports is a maximum number of DMRS ports of the PSSCH scheduled by the PSCCH sensed by the UE, or a maximum number of DMRS ports of a PSSCH transmitted in a resource pool used by the UE; and
determine whether to perform resource exclusion in a resource selection window of the UE according to a comparison result;
wherein the maximum number of DMRS ports corresponding to the PSSCH being at least two, comprises:
the resource pool used by the UE is configured as that an RSRP of a PSSCH scheduled by a sensed PSCCH is used to compare with the received power threshold; and
a field corresponding to a number of DMRS ports in sidelink control information (SCI) transmitted in the PSCCH sensed by the UE is a preset value.
14. The electronic device according to claim 13 , wherein the preset value is 1.
15. The electronic device according to claim 13 , wherein the processor calls the program code stored in the memory to cooperate with the transceiver further to compare a sum of RSRPs of respective DMRS ports of a PSSCH with the received power threshold; wherein the PSSCH is the PSSCH scheduled by the PSCCH sensed by the UE.
16. The electronic device according to claim 15 , wherein the processor calls the program code stored in the memory to cooperate with the transceiver further to compare a sum of PSSCH-RSRP 1000 and PSSCH-RSRP 1001 with the received power threshold; wherein the PSSCH-RSRP 1000 and the PSSCH-RSRP 1001 are two RSRP values measured respectively according to two DMRS ports of the PSSCH.
17. The electronic device according to claim 15 , wherein the processor calls the program code stored in the memory to cooperate with the transceiver further to perform resource exclusion in the resource selection window of the UE if the comparison result is that the sum of the RSRPs of respective DMRS ports of the PSSCH is greater than the received power threshold.
18. A computer-readable storage medium with a computer program stored thereon, wherein the computer program, when executed by a processor, causes the processor to execute the following:
comparing a reference signal received power (RSRP) of a channel with a preset received power threshold if a maximum number of demodulation reference signal (DMRS) ports corresponding to a physical sidelink shared channel (PSSCH) is at least two; wherein the channel is a physical sidelink control channel (PSCCH) sensed by a user equipment (UE) or a PSSCH scheduled by the PSCCH sensed by the UE, and the maximum number of DMRS ports is a maximum number of DMRS ports of the PSSCH scheduled by the PSCCH sensed by the UE or a maximum number of DMRS ports of a PSSCH transmitted in a resource pool used by the UE; and
determining whether to perform resource exclusion in a resource selection window of the UE according to a comparison result;
wherein the maximum number of DMRS ports corresponding to the PSSCH being at least two, comprises:
the resource pool used by the UE is configured as that an RSRP of a PSSCH scheduled by a sensed PSCCH is used to compare with the received power threshold; and
a field corresponding to a number of DMRS ports in sidelink control information (SCI) transmitted in the PSCCH sensed by the UE is a preset value.