Precoding matrix indicators for distinct frequency full duplex

A network entity comprising:

• a memory storing processor-readable code;
• and
• at least one processor coupled to the memory, the at least one processor configured to execute the processor-readable code to cause the at least one processor to:
• initiate transmission of a channel state information (CSI) subband configuration with respect to distinct frequency full duplex (DFFD) wireless signal communication;
• initiate reception of a precoding matrix indicator (PMI) comprising a compressed representation of coefficients of spatial beams of a precoding matrix configured for communication of the DFFD wireless signal via one or more spatial beams, wherein the compressed representation of the coefficients comprises a frequency domain compression of the coefficients in accordance with a first frequency domain compression basis parameter determined for the precoding matrix based, at least in part, on a first precoding matrix subband parameter, wherein the first precoding matrix subband parameter is based, at least in part, on a correspondence between one or more downlink subbands for the DFFD wireless signal and CSI subbands of the CSI subband configuration;
• and
• determine whether to initiate transmission of the DFFD wireless signal implementing the precoding matrix of the PMI or another precoding matrix configuration.

A method of wireless communication performed by a user equipment (UE), the method comprising:

• determining a first precoding matrix subband parameter for a precoding matrix selected by the UE to be used in communication of a distinct frequency full duplex (DFFD) wireless signal via one or more spatial beams, wherein the first precoding matrix subband parameter is determined based, at least in part, on a correspondence between one or more downlink subbands for the DFFD wireless signal and channel state information (CSI) subbands of a CSI subband configuration for the DFFD wireless signal;
• determining a first frequency domain compression basis parameter for frequency domain compression of coefficients of the spatial beams in the precoding matrix, wherein the first frequency domain compression basis parameter is determined based, at least in part, on the first precoding matrix subband parameter;
• and
• transmitting a compressed representation of the coefficients as a precoding matrix indicator (PMI), wherein the compressed representation of the coefficients comprises a frequency domain compression of the coefficients in accordance with the first frequency domain compression basis parameter.