Techniques for sounding reference signal carrier switching and uplink transmission switching

A user equipment (UE) for wireless communication, comprising:

• one or more memories;
• and
• one or more processors, coupled to the one or more memories, configured to cause the UE to:
• transmit capability information, wherein the capability information indicates a first capability switching time associated with switching a first number of transmit chains from a second uplink transmission component carrier to a sounding reference signal (SRS) component carrier associated with transmitting an SRS and a second capability switching time associated with switching a transmit chain from a first uplink transmission component carrier to the second uplink transmission component carrier, wherein the SRS component carrier comprises a component carrier that comprises uplink symbols and downlink symbols and is not associated with a physical control channel or a physical shared channel;
• receive an indication to transmit an SRS in the SRS component carrier;
• and
• perform a transmission based on a determination of an SRS switching time associated with an SRS transmission, wherein the SRS switching time is associated with switching a second number of transmit chains to the SRS component carrier, and wherein the determination of the SRS switching time is based at least in part in on one or more of a third number of transmit chains associated with the first uplink transmission component carrier, a fourth number of transmit chains associated with the second uplink transmission component carrier, and the second number of transmit chains to be switched to the SRS component carrier.

A method of wireless communication performed by a network node, comprising:

• transmitting a request for capability information;
• receiving the capability information based at least in part on the request, wherein the capability information indicates a first capability switching time associated with switching a first number of transmit chains from a second uplink transmission component carrier to a sounding reference signal (SRS) component carrier associated with transmitting an SRS and a second capability switching time associated with switching a transmit chain from a first uplink transmission component carrier to the second uplink transmission component carrier, wherein the SRS component carrier comprises a component carrier that comprises uplink symbols and downlink symbols and is not associated with a physical control channel or a physical shared channel;
• transmitting an indication to transmit an SRS in the SRS component carrier based on a determination of an SRS switching time associated with an SRS transmission, wherein the SRS switching time is associated with switching a second number of transmit chains to the SRS component carrier, and wherein the determination of the SRS switching time is based at least in part in on one or more of a third number of transmit chains associated with the first uplink transmission component carrier, a fourth number of transmit chains associated with the second uplink transmission component carrier, and the second number of transmit chains to be switched to the SRS component carrier.