Quasi co-location relationship reporting

A method for wireless communications at a base station, comprising:

• transmitting to a user equipment (UE) according to a first receive configuration based at least in part on a first quasi co-location (QCL) relationship;
• receiving, from the UE, an indication of a second QCL relationship;
• receiving an uplink signal according to a second receive configuration based at least in part on the received indication of the second QCL relationship;
• and
• decoding the received uplink signal based at least in part on the second QCL relationship.

An apparatus for wireless communications at a user equipment (UE), comprising:

• a processor,
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• transmit a first uplink signal to a base station using a first antenna subarray configuration for a first antenna subarray of the UE, the first antenna subarray configuration associated with a first quasi co-location (QCL) relationship;
• determine to switch from using the first antenna subarray configuration to using a second antenna subarray configuration for the first antenna subarray, the second antenna subarray configuration associated with a second QCL relationship;
• transmit, to the base station, an indication of the second QCL relationship based at least in part on the determining to switch;
• and
• transmit a second uplink signal using a second antenna subarray according to the indicated second antenna subarray configuration.

An apparatus for wireless communications at a base station, comprising:

• a processor,
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• transmit to a user equipment (UE) according to a first receive configuration based at least in part on a first quasi co-location (QCL) relationship;
• receive, from the UE, an indication of a second QCL relationship;
• receive an uplink signal according to a second receive configuration based at least in part on the received indication of the second QCL relationship;
• and
• decode the received uplink signal based at least in part on the second QCL relationship.