Full-duplex user equipment operation

1 . A user equipment (“UE”) for wireless communication, comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the UE to:

receive a joint configuration that defines a paired uplink (“UL”) reference signal (“RS”) resource and a paired downlink (“DL”) RS resource for self-interference measurement in a full-duplex operation, wherein the paired UL RS resource is associated with a UL transmit (“Tx”) beam and the paired DL RS resource is associated with a DL receive (“Rx”) beam that is different from the UL transmit beam;

perform a self-interference measurement using the paired UL RS resource and the paired DL RS resource that are configured within a same symbol and that occupy overlapping or non-overlapping frequency resources within the symbol;

report an indication identifying the UL Tx beam and the DL Rx beam as a beam pair based on the self-interference measurement; and

receive at least one downlink control information (“DCI”) that schedules simultaneous UL transmission and DL reception in the full-duplex operation based on the beam pair.

2 . The UE of claim 1 , wherein the joint configuration comprises at least one pair of quasi co-located (QCL) type-D assumptions associated with a pair of beams, a pair of TRPs, or a pair of panels, or a combination thereof.

3 . The UE of claim 1 , wherein, for the beam pair, the UL Tx beam is associated with a first TRP, the DL Rx beam is different than the UL Tx beam and associated with the first TRP, the DL Rx beam is associated with a second TRP, or a combination thereof.

4 . The UE of claim 1 , wherein the at least two beams of at least one TRP comprises two different beams of one TRP, two beams from two TRPs, or a combination thereof.

5 . The UE of claim 1 , wherein the UL Tx beam of the UL Tx beam and DL Rx beam pair is configured for UL non-zero power (“NZP”) RS transmission and the DL Rx beam of the UL Tx beam and DL Rx beam pair is configured for the self-interference measurement on DL zero power (“ZP”) RS.

6 . The UE of claim 1 , wherein the joint configuration for self-interference measurement for the full-duplex operation comprises an indication of a reduced-power measurement state, a maximum transmit power level, a set of UL and DL resources for the self-interference measurement, or a combination thereof.

7 . The UE of claim 1 , wherein the DL Rx beam of the UL Tx beam and DL Rx beam pair is configured for the self-interference measurement on DL zero power (“ZP”) RS and the UL Tx beam of the UL Tx beam and DL Rx beam pair is configured for UL non-zero power (“NZP”) RS.

8 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to report at least one resource index to indicate the UL Tx beam and DL Rx beam pair, wherein the UL Tx beam is associated with a first TRP and the DL Rx beam is associated with a second TRP.

9 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive a single DCI to schedule a simultaneous UL transmission to a first TRP and DL reception from a second TRP for the full-duplex operation.

10 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive multiple DCIs to schedule a simultaneous UL transmission to a first TRP and a DL receptions from a second TRP for the full-duplex operation.

11 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to configure the UE with a first demodulation RS (“DM-RS”) port for UL transmission and a second DM-RS port for DL reception, wherein the first DM-RS port and the second DM-RS port are not quasi co-located (“QCL'd”) and correspond to different code division multiplexing (“CDM”) groups.

12 . A method performed by a user equipment (“UE”), the method comprising:

receiving a joint configuration that defines a paired uplink (“UL”) reference signal (“RS”) resource and a paired downlink (“DL”) RS resource for self-interference measurement in a full-duplex operation, wherein the paired UL RS resource is associated with a UL transmit (“Tx”) beam and the paired DL RS resource is associated with a DL receive (“Rx”) beam that is different from the UL transmit beam;

performing a self-interference measurement using the paired UL RS resource and the paired DL RS resource that are configured within a same symbol and that occupy overlapping or non-overlapping frequency resources within the symbol;

reporting an indication identifying the UL Tx beam and the DL Rx beam as a beam pair based on the self-interference measurement; and

receiving at least one downlink control information (“DCI”) that schedules simultaneous UL transmission and DL reception in the full-duplex operation based on the beam pair.

13 . The method of claim 12 , wherein the joint configuration comprises at least one pair of quasi co-located (QCL) type-D assumptions associated with a pair of beams, a pair of TRPs, or a pair of panels, or a combination thereof.

14 . The method of claim 12 , wherein:

at least two beams of at least one TRP comprises two different beams of one TRP, two beams from two TRPs, or a combination thereof;

for the beam pair, the UL Tx beam is associated with a first TRP, the DL Rx beam is different than the UL Tx beam and associated with the first TRP, the DL Rx beam is associated with a second TRP, or a combination thereof; or

a combination thereof.

15 . The method of claim 12 , wherein the joint configuration for self-interference measurement for the full-duplex operation comprises an indication of a reduced-power measurement state, a maximum transmit power level, a set of UL and DL resources for the self-interference measurement, or a combination thereof.

16 . The method of claim 12 , wherein (of the UL Tx beam and DL Rx beam pair is configured for the self-interference measurement on DL zero power (“ZP”) RS and the UL Tx beam of the UL Tx beam and DL Rx beam pair is configured for UL non-zero power (“NZP”) RS.

17 . The method of claim 12 , wherein the at least two beams of at least one TRP comprises two different beams of one TRP, two beams from two TRPs, or a combination thereof.

18 . The method of claim 12 , wherein the UL Tx beam of the UL Tx beam and DL Rx beam pair is configured for UL non-zero power (“NZP”) RS transmission and the DL Rx beam of the UL Tx beam and DL Rx beam pair is configured for the self-interference measurement on DL zero power (“ZP”) RS.

19 . A network equipment for wireless communication, comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the network equipment to:

transmit a joint configuration that defines a paired uplink (“UL”) reference signal (“RS”) resource and a paired downlink (“DL”) resource for self-interference measurement for full-duplex operation, wherein the paired UL RS resource is associated with a UL transmit (“Tx”) beam and the paired DL RS resource is associated with a DL receive (“Rx”) beam that is different from the UL Tx beam, and wherein the paired UL RS resource and the paired DL RS resource are configured within a same symbol and occupy overlapping or non-overlapping frequency resources within the symbol;

receive an indication identifying the UL Tx beam and DL Rx beam as a beam pair based on a self-interference measurement performed by a user equipment (UE) using the paired UL and DL reference signal resources; and

transmit at least one downlink control information (“DCI”) that schedules simultaneous UL transmission and DL reception in the full-duplex operation based on the beam pair.

20 . A method performed by a network equipment, comprising:

transmitting a joint configuration that defines a paired uplink (“UL”) reference signal (“RS”) resource and a paired downlink (“DL”) RS resource for self-interference measurement for full-duplex operation, wherein the paired UL RS resource is associated with a UL transmit (“Tx”) beam and the paired DL RS resource is associated with a DL receive (“Rx”) beam that is different from the UL Tx beam, and wherein the paired UL RS resource and the paired DL RS resource are configured within a same symbol and occupy overlapping or non-overlapping frequency resources within the symbol;

receiving an indication identifying the UL Tx beam and DL Rx beam as a beam pair based on a self-interference measurement performed by a user equipment (UE) using the paired UL and DL reference signal resources; and

transmitting at least one downlink control information (“DCI”) that schedules simultaneous UL transmission and DL reception in the full-duplex operation based on the beam pair.