Codebook design for csi enhancement to exploit time domain properties

Abstract

Apparatus and methods are provided for codebook configuration including enhancements for channel time domain properties. A user equipment (UE) receives a channel measurement resource (CMR) configuration to support channel state information (CSI) reporting based on channel time domain properties. The CMR configuration corresponds to a burst of N time domain equally spaced CMR. The UE measures, based on the CMR configuration, CSI references signals (CSI-RSs) from one or more transmission and reception point (TRP). The UE determines, based on measurements of the CSI-RSs, multiple time domain equally spaced precoding matrix indicator (PMI) matrices. The UE encodes the multiple time domain equally spaced PMI matrices using N orthogonal discrete Fourier transform (DFT) sequences as time or Doppler domain basis, where each of the N orthogonal DFT sequences includes N entries. The UE reports the multiple time domain equally spaced PMI matrices that are encoded using time or Doppler domain basis.

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