Paired sounding reference signal transmissions in multi-transmission/reception point operation

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

• a processor, memory in electronic communication with the processor;
• and instructions stored in the memory and executable by the processor to cause the apparatus to:
• transmit a first sounding reference signal to a first transmission reception point;
• receive, from the first transmission reception point, a downlink transmission that is based at least in part on the first sounding reference signal;
• and
• transmit, to a second transmission reception point, a second sounding reference signal that is precoded to indicate at least one dimension of a received signal space corresponding to the downlink transmission, wherein the received signal space comprises one or more dimensions of an available signal space of the UE that are spanned by a signal comprising the downlink transmission.

An apparatus for wireless communication at a first transmission reception point comprising, comprising:

• a processor, memory in electronic communication with the processor;
• and instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive, from a first user equipment (UE), a first sounding reference signal that is precoded to indicate at least one dimension of a received signal space corresponding to a first downlink transmission from a second transmission reception point to the first UE, wherein the received signal space comprises one or more dimensions of an available signal space of the UE that are spanned by a signal comprising the first downlink transmission;
• and
• transmit a second downlink transmission based at least in part on the first sounding reference signal.