Type-ii-coherent joint transmission channel state information reporting with frequency domain compensation at a finer than subband size level

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

• determining a plurality of CSI parameters from measurement of one or more channel conditions of CSI-reference signals (CSI-RS) received from a set of NTRP transmission-reception points (TRPs), wherein NTRP corresponds to a number of TRPs within the set of NTRP TRPs;
• identifying a reference TRP of the set of NTRP TRPs;
• calculating a frequency domain compensation quantity for each frequency domain compensation unit, wherein the frequency domain compensation quantity for each frequency compensation unit compensates a precoder within the CSI parameters applicable to each non-reference TRP of the set of NTRP TRPs and corresponds to a delay difference between the each non-reference TRP and the reference TRP;
• and
• transmitting a CSI report including the CSI parameters with the precoder compensated by the frequency domain compensation quantity for each frequency compensation unit, wherein the CSI report includes the precoder applicable to one or more reported TRPs, and wherein the one or more reported TRPs includes fewer than NTRP−1 TRPs of the set of NTRP TRPs.

A user equipment (UE) configured with coherent joint transmission (CJT) multi-transmission-reception point (mTRP) channel state information (CSI) reporting, comprising:

• means for determining a plurality of CSI parameters from measurement of one or more channel conditions of CSI-reference signals (CSI-RS) received from a set of NTRP transmission-reception points (TRPs), wherein NTRP corresponds to a number of TRPs within the set of NTRP TRPs;
• means for identifying a reference TRP of the set of NTRP TRPs;
• means for calculating a frequency domain compensation quantity for each frequency domain compensation unit, wherein the frequency domain compensation quantity for each frequency compensation unit compensates a precoder within the CSI parameters applicable to each non-reference TRP of the set of NTRP TRPs and corresponds to a delay difference between the each non-reference TRP and the reference TRP;
• and
• means for transmitting a CSI report including the CSI parameters with the precoder compensated by the frequency domain compensation quantity for each frequency compensation unit, wherein the CSI report includes the precoder applicable to one or more reported TRPs, and wherein the one or more reported TRPs includes fewer than NTRP−1 TRPs of the set of NTRP TRPs.