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1. (WO2018182954) EFFICIENT BEAM SEARCH METHODS FOR THREE-DIMENSIONAL BEAMFORMING WITH NON-PRECODED REFERENCE SIGNALS

Pub. No.:    WO/2018/182954    International Application No.:    PCT/US2018/021912
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Tue Mar 13 00:59:59 CET 2018
IPC: H04B 7/06
Applicants: INTEL IP CORPORATION
Inventors: HWANG, Yeong-Sun
EDER, Franz
JU, Ziyang
Title: EFFICIENT BEAM SEARCH METHODS FOR THREE-DIMENSIONAL BEAMFORMING WITH NON-PRECODED REFERENCE SIGNALS
Abstract:
A method and apparatus for three-dimensional beamforming, which include an estimation of a channel spatial coherence for a beam space of a device based on a plurality of non-precoded reference signals such that the beam space comprises a plurality of beam subspaces based on the estimated channel spatial coherence and each of the plurality of beam subspaces include a beam direction representative of a respective beam subspace of the plurality of beam subspaces. Furthermore, a selection a beam subspace of the plurality of beam subspaces based on a channel quality metric of the beam direction that is representative of the beam subspace is included.