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1. (WO2018143995) CODEBOOK SELECTION AMONG CODEBOOKS WITH DIFFERENT SPATIAL GRANULARITY FOR WIRELESS NETWORKS

Pub. No.:    WO/2018/143995    International Application No.:    PCT/US2017/016297
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Fri Feb 03 00:59:59 CET 2017
IPC: H04B 7/0456
H04B 7/04
H04B 7/06
Applicants: NOKIA TECHNOLOGIES OY
VISOTSKY, Eugene
Inventors: VISOTSKY, Eugene
MAO, Xiaomao
Title: CODEBOOK SELECTION AMONG CODEBOOKS WITH DIFFERENT SPATIAL GRANULARITY FOR WIRELESS NETWORKS
Abstract:
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.