Signaling for partial port sounding procedures

A method for wireless communications by a user equipment (UE), comprising:

• transmitting a capability message indicating that the UE is capable of performing a partial port sounding procedure via a first quantity of antenna ports that is less than a second quantity of antenna ports for a full port sounding procedure associated with a total set of antenna ports of the UE;
• receiving a control signal instructing the UE to perform the partial port sounding procedure using a first subset of antenna ports of the UE, wherein the control signal identifies the first subset of antenna ports from the total set of antenna ports according to the first quantity of antenna ports;
• and
• performing the partial port sounding procedure using the first subset of antenna ports in response to the control signal.

A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to:

• transmit a capability message indicating that a user equipment (UE) is capable of performing a partial port sounding procedure via a first quantity of antenna ports that is less than a second quantity of antenna ports for a full port sounding procedure associated with a total set of antenna ports of the UE;
• receive a control signal instructing the UE to perform the partial port sounding procedure using a first subset of antenna ports of the UE, wherein the control signal identifies the first subset of antenna ports from the total set of antenna ports according to the first quantity of antenna ports;
• and
• perform the partial port sounding procedure using the first subset of antenna ports in response to the control signal.