Method of constructing codebook with multiple resolution and user equipment

Abstract

A method of constructing a codebook with multiple resolution in a wireless communication system includes constructing, with a user equipment (UE), a high resolution codebook using a low resolution codebook; and transmitting, from the UE to a base station (BS), Channel State Information (CSI) feedback in accordance with a feedback scheme corresponding to the high resolution codebook or the low resolution codebook. The high resolution codebook defines the feedback scheme corresponding to the high resolution codebook. The method further comprises selecting, with the UE, multiple first beams from multiple second beams used for downlink transmission from the BS. The constructing constructs the high resolution codebook based on the multiple first beams, and the low resolution codebook is constructed based on a single beam selection scheme that selects a single beam.

Dependencies are inferred from the claim text.