CODEBOOK SELECTION AMONG CODEBOOKS WITH DIFFERENT SPATIAL GRANULARITY FOR WIRELESS NETWORKS

摘要

A technique includes determining, by the user device, a recommended codebook of a plurality of codebooks with different spatial granularities, sending, by the user device to the base station, a first codebook index (CBI) that indicates the recommended codebook for use in precoding, and receiving, by the user device from the base station, information regarding a selected codebook, of the plurality of codebooks with different spatial granularities, that has been selected by the base station for performing precoding for downlink transmissions to the user device.