Uplink reference signal spatial relation identification techniques

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

• establishing a connection with a base station via one or more transmission beams;
• receiving, from the base station, a medium-access-control control element that indicates a sounding reference signal is to be transmitted to the base station and spatial relation information for the transmission of the sounding reference signal, wherein the spatial relation information indicates one or more uplink transmission parameters for transmission of the sounding reference signal via the one or more transmission beams;
• and
• transmitting the sounding reference signal to the base station using the one or more uplink transmission parameters indicated in the medium-access-control control element.

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

• configuring a user equipment (UE) with a set of available spatial relations for transmitting a sounding reference signal to the base station, each spatial relation of the set of available spatial relations indicating one or more uplink transmission parameters for transmission of the sounding reference signal;
• transmitting, to the UE, a medium-access-control control element that indicates the sounding reference signal is to be transmitted by the UE and a first spatial relation of the set of available spatial relations to be used for the sounding reference signal;
• and
• receiving the sounding reference signal from the UE based at least in part on the one or more uplink transmission parameters indicated in the first spatial relation.

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

• establishing a connection with a user equipment (UE) via one or more transmission beams;
• transmitting, to the UE, a medium-access-control control element that indicates a sounding reference signal is to be transmitted by the UE and spatial relation information for the transmission of the sounding reference signal, wherein the spatial relation information indicates one or more uplink transmission parameters for transmission of the sounding reference signal via the one or more transmission beams;
• and
• receiving the sounding reference signal from the UE based at least in part on the one or more uplink transmission parameters indicated in the medium-access-control control element.