Channel estimation for full-duplex and half-duplex slots

An apparatus for wireless communications at a network entity, comprising:

• at least one processor;
• at least one memory coupled with the at least one processor;
• and
• instructions stored in the at least one memory and executable by the at least one processor to cause the apparatus to:
• transmit a control message that indicates a first resource for a first reference signal and a second resource for a second reference signal, the first resource associated with first channel state information for half-duplex operations and the second resource associated with second channel state information for full-duplex operations, wherein the second resource and the first resource are overlayed, such that a plurality of resource elements of the second resource comprise a subset of a plurality of resource elements of the first resource;
• transmit, via at least the subset of the plurality of resource elements of the first resource, at least one of the first reference signal or the second reference signal in accordance with the control message;
• and
• receive at least one measurement report that includes the first channel state information for the half-duplex operations and the second channel state information for the full-duplex operations based at least in part on transmitting at least one of the first reference signal or the second reference signal.

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

• receiving a control message that indicates a first resource for a first reference signal and a second resource for a second reference signal, the first resource associated with first channel state information for half-duplex operations and the second resource associated with second channel state information for full-duplex operations, wherein the second resource and the first resource are overlayed, such that a plurality of resource elements of the second resource comprise a subset of a plurality of resource elements of the first resource;
• receiving, via at least the subset of the plurality of resource elements of the first resource, at least one of the first reference signal or the second reference signal in accordance with the control message;
• measuring at least one of the first reference signal or the second reference signal to obtain the first channel state information for the half-duplex operations and the second channel state information for the full-duplex operations;
• and
• transmitting at least one measurement report that includes the first channel state information and the second channel state information based at least in part on the measuring.

A method for wireless communications at a network entity, comprising:

• transmitting a control message that indicates a first resource for a first reference signal and a second resource for a second reference signal, the first resource associated with first channel state information for half-duplex operations and the second resource associated with second channel state information for full-duplex operations, wherein the second resource and the first resource are overlayed, such that a plurality of resource elements of the second resource comprise a subset of a plurality of resource elements of the first resource;
• transmitting, via at least the subset of the plurality of resource elements of the first resource, at least one of the first reference signal or the second reference signal in accordance with the control message;
• and
• receiving at least one measurement report that includes the first channel state information for the half-duplex operations and the second channel state information for the full-duplex operations based at least in part on transmitting at least one of the first reference signal or the second reference signal.