Multiplexing of PUCCH for beam failure recovery and other signals
Apparatuses, systems, and methods for multiplexing of PUCCH for beam failure recovery and other signals. A UE may determine a transmission dropping rule and a transmission power scaling rule for a PUCCH which is dedicatedly configured for secondary BFR transmission, such as a PUCCH-BFR, when it is multiplexed with BFR multiplexed with at least one other signal. The PUCCH-BFR and the at least one other signal may be multiplexed in a CC or in multiple CCs. The UE may determine a transmission dropping rule, e.g., so that UE can transmit an uplink signal with higher priority and drop the other uplink signal with lower priority to avoid beam collisions. The UE may determine a transmission power scaling rule, e.g., so the UE may scale transmission power within a CC and/or across CCs. The UE may multiplex the PUCCH-BFR with the at least one other signal according to the rules.
1. A method for receiving a physical uplink control channel (PUCCH) configured for secondary beam failure recover (PUCCH-BFR), comprising:
receiving a PUCCH-BFR transmitted with at least one other signal according to a transmission power scaling rule for a plurality of uplink signals including the PUCCH-BFR, wherein the PUCCH-BFR and the at least one other uplink signal are multiplexed in two or more component carriers (CCs); and
wherein the transmission power scaling rule includes a priority order for the plurality of uplink signals, the priority order including:
a physical random access channel (PRACH) on a primary cell having a higher priority than a physical uplink control channel (PUCCH) with hybrid automatic repeat request (HARQ) acknowledgment (ACK), a PUCCH with a scheduling request (SR), or a physical uplink shared channel (PUSCH) with HARQ-ACK;
each of the PUCCH with HARQ-ACK, the PUCCH with the SR, and the PUSCH with HARQ-ACK having a higher priority than a PUCCH with channel state information (CSI) or a PUSCH with CSI;
each of the PUCCH with CSI and the PUSCH with CSI having a higher priority than a PUSCH without HARQ-ACK or CSI; and
the PUSCH without HARQ-ACK or CSI having a higher priority than a sounding reference signal (SRS); and
wherein a priority for PUCCH-BFR is at least one of:
equivalent to the priority of the PUCCH with the SR; or
higher than the priority of the PUCCH with the SR and lower than the priority of the PRACH on the primary cell.
2. The method of claim 1 ,
wherein the plurality of uplink signals include one or more of:
the PRACH on the primary cell;
the PUCCH with HARQ ACK;
the PUCCH with the SR;
the PUCCH with CSI;
an aperiodic SRS;
a semi-persistent SRS;
a periodic SRS;
a PUSCh without HARQ ACK; or
PRACH on non-primary cell.
3. The method of claim 1 ,
wherein the PUCCH with SR is in a primary cell or a special secondary cell.
4. The method of claim 1 ,
wherein a transmission power of the PUCCH-BFR and the at least one other uplink signal are scaled according to priority levels associated with the transmission power scaling rule.
5. The method of claim 1 ,
wherein the PUCCH-BFR is configured as part of a scheduling request resource configuration procedure.
6. The method of claim 5 ,
wherein a scheduling request resource for BFR is indicated via an additional field of an existing parameter or via a SchedulingRequestBFRResourceConfig parameter.
7. The method of claim 1 ,
wherein the PUCCH-BFR is received via one of PUCCH format 0 or PUCCH format 1.
8. A network node, comprising:
a memory;
at least one communication interface; and
one or more processors communicatively coupled to the memory and the at least one communication interface;
wherein the one or more processors are configured to cause the network node to:
receive a PUCCH-BFR transmitted with at least one other signal according to a transmission power scaling rule for a plurality of uplink signals including the PUCCH-BFR, wherein the PUCCH-BFR and the at least one other uplink signal are multiplexed in two or more component carriers (CCs); and
wherein the transmission power scaling rule includes a priority order for the plurality of uplink signals, the priority order including:
a physical random access channel (PRACH) on a primary cell having a higher priority than a physical uplink control channel (PUCCH) with hybrid automatic repeat request (HARQ) acknowledgment (ACK), a PUCCH with a scheduling request (SR), or a physical uplink shared channel (PUSCH) with HARQ-ACK;
each of the PUCCH with HARQ-ACK, the PUCCH with the SR, and the PUSCH with HARQ-ACK having a higher priority than a PUCCH with channel state information (CSI) or a PUSCH with CSI;
each of the PUCCH with CSI and the PUSCH with CSI having a higher priority than a PUSCH without HARQ-ACK or CSI; and
the PUSCH without HARQ-ACK or CSI having a higher priority than a sounding reference signal (SRS); and
wherein a priority for PUCCH-BFR is at least one of:
equivalent to the priority of the PUCCH with the SR; or
higher than the priority of the PUCCH with the SR and lower than the priority of the PRACH on the primary cell.
9. The network node of claim 8 ,
wherein the plurality of uplink signals include one or more of:
the PRACH on the primary cell;
the PUCCH with HARQ ACK;
the PUCCH with the SR;
the PUCCH with CSI;
an aperiodic SRS;
a semi-persistent SRS;
a periodic SRS;
a PUSCh without HARQ ACK; or
PRACH on non-primary cell.
10. The network node of claim 8 ,
wherein the PUCCH with SR is in a primary cell or a special secondary cell.
11. The network node of claim 8 ,
wherein a transmission power of the PUCCH-BFR and the at least one other uplink signal are scaled according to priority levels associated with the transmission power scaling rule.
12. The network node of claim 8 ,
wherein the PUCCH-BFR is configured as part of a scheduling request resource configuration procedure.
13. The network node of claim 12 ,
wherein a scheduling request resource for BFR is indicated via an additional field of an existing parameter or via a SchedulingRequestBFRResourceConfig parameter.
14. The network node of claim 8 ,
wherein the PUCCH-BFR is received via one of PUCCH format 0 or PUCCH format 1.
15. An apparatus, comprising:
a memory; and
at least one processor in communication with the memory, wherein the at least one processor is configured to:
receive a PUCCH-BFR transmitted with at least one other signal according to a transmission power scaling rule for a plurality of uplink signals including the PUCCH-BFR, wherein the PUCCH-BFR and the at least one other uplink signal are multiplexed in two or more component carriers (CCs); and
wherein the transmission power scaling rule includes a priority order for the plurality of uplink signals, the priority order including:
a physical random access channel (PRACH) on a primary cell having a higher priority than a physical uplink control channel (PUCCH) with hybrid automatic repeat request (HARQ) acknowledgment (ACK), a PUCCH with a scheduling request (SR), or a physical uplink shared channel (PUSCH) with HARQ-ACK;
each of the PUCCH with HARQ-ACK, the PUCCH with the SR, and the PUSCH with HARQ-ACK having a higher priority than a PUCCH with channel state information (CSI) or a PUSCH with CSI;
each of the PUCCH with CSI and the PUSCH with CSI having a higher priority than a PUSCH without HARQ-ACK or CSI; and
the PUSCH without HARQ-ACK or CSI having a higher priority than a sounding reference signal (SRS); and
wherein a priority for PUCCH-BFR is at least one of:
equivalent to the priority of the PUCCH with the SR; or
higher than the priority of the PUCCH with the SR and lower than the priority of the PRACH on the primary cell.
16. The apparatus of claim 15 ,
wherein the plurality of uplink signals include one or more of:
the PRACH on the primary cell;
the PUCCH with HARQ ACK;
the PUCCH with the SR;
the PUCCH with CSI;
an aperiodic SRS;
a semi-persistent SRS;
a periodic SRS;
a PUSCh without HARQ ACK; or
PRACH on non-primary cell.
17. The apparatus of claim 15 ,
wherein the PUCCH with SR is in a primary cell or a special secondary cell.
18. The apparatus of claim 15 ,
wherein a transmission power of the PUCCH-BFR and the at least one other uplink signal are scaled according to priority levels associated with the transmission power scaling rule.
19. The apparatus of claim 15 ,
wherein the PUCCH-BFR is configured as part of a scheduling request resource configuration procedure; and
wherein a scheduling request resource for BFR is indicated via an additional field of an existing parameter or via a SchedulingRequestBFRResourceConfig parameter.
20. The apparatus of claim 15 ,
wherein the PUCCH-BFR is received via one of PUCCH format 0 or PUCCH format 1.