Methods and apparatuses for uplink transmission management

1. A method performed by a User Equipment (UE) for Uplink (UL) transmission management in a wireless communication system, the method comprising:

determining a default spatial domain transmission filter for an UL resource according to at least one Quasi Co-Location (QCL) parameter selected from a Control Resource Set (CORESET) having one of a lowest CORESET-ID and a highest CORESET-ID in an active Downlink (DL) Bandwidth Part (BWP), after determining that the UL resource is not configured with a spatial domain transmission filter and a pathloss reference Reference Signal (RS) resource; and

transmitting the UL resource by applying the default spatial domain transmission filter, the UL resource being a Sounding Reference Signal (SRS) resource included in an SRS resource set that is not configured with the pathloss reference RS resource.

2. The method of claim 1 , further comprising:

receiving a configuration via Radio Resource Control (RRC) signaling;

determining that the SRS resource set is used for a non-codebook-based Physical Uplink Shared Channel (PUSCH) transmission according to the configuration; and

determining that the UL resource is not associated with a Channel State Information Reference Signal (CSI-RS) resource according to the configuration.

3. The method of claim 1 , wherein the UL resource and the CORESET are associated with a same Component Carrier (CC).

4. The method of claim 1 , further comprising:

determining a default pathloss reference RS resource for the UL resource by selecting an RS resource with a QCL-type D from a plurality of RS resources indicated by the at least one QCL hydreparameter of the CORESET.

5. A User Equipment (UE) for Uplink (UL) transmission management in a wireless communication system, the UE comprising:

a memory; and

at least one processor coupled to the memory, the at least one processor being configured to:

determine a default spatial domain transmission filter for an UL resource according to at least one Quasi Co-Location (QCL) parameter selected from a Control Resource Set (CORESET) having one of a lowest CORESET-ID and a highest CORESET-ID in an active Downlink (DL) Bandwidth (BWP), after determining that the UL resource is not configured with a spatial domain transmission filter and a pathloss reference Reference Signal (RS) resource; and

transmit the UL resource by applying the default spatial domain transmission filter, the UL resource being a Sounding Reference Signal (SRS) resource included in an SRS resource set that is not configured with the pathloss reference RS resource.

6. The UE of claim 5 , wherein the at least one processor is further configured to:

receive a configuration via Radio Resource Control (RRC) signaling;

determine that the SRS resource set is used for a non-codebook-based Physical Uplink Shared Channel (PUSCH) transmission according to the configuration; and

determine that the UL resource is not associated with a Channel State Information Reference Signal (CSI-RS) resource according to the configuration.

7. The UE of claim 5 , wherein the UL resource and the CORESET are associated with a same Component Carrier (CC).

8. The UE of claim 5 , wherein the at least one processor is further configured to:

determine a default pathloss reference RS resource for the UL resource by selecting an RS resource with a QCL-type D from a plurality of RS resources indicated by the at least one QCL parameter of the CORESET.