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1. (WO2018160646) SPLIT BEAMFORMING REFINEMENT PHASE (BRP) BASED SECTOR LEVEL SWEEP (SLS) FOR MULTI-ANTENNA ARRAY DEVICES

Pub. No.:    WO/2018/160646    International Application No.:    PCT/US2018/020138
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Thu Mar 01 00:59:59 CET 2018
IPC: H04B 7/06
H04B 7/04
H04W 72/04
Applicants: QUALCOMM INCORPORATED
Inventors: KASHER, Assaf Yaakov
SANDEROVICH, Amichai
TRAININ, Solomon
EITAN, Alecsander Petru
Title: SPLIT BEAMFORMING REFINEMENT PHASE (BRP) BASED SECTOR LEVEL SWEEP (SLS) FOR MULTI-ANTENNA ARRAY DEVICES
Abstract:
Certain aspects of the present disclosure provide methods and apparatus for enhancing a beamforming training procedure between wireless nodes comprising multiple transmit and receive antenna arrays (multi-antenna array devices). For example, an apparatus can include a processing system that generates a plurality of transmit beamforming refinement frames for a transmit sector sweep that each include a preamble, a data field, at least one beamforming training field, identification of a transmit antenna array to be used for transmitting the at least one beamforming training field, and a status indication of whether the transmit beamforming refinement frame is a last transmit beamforming refinement frame in the transmit sector sweep for one or more receive antenna arrays of a wireless node. The apparatus also includes a first interface that outputs the transmit beamforming refinement frames using a first transmit beamforming sector for the preambles and data fields, and one or more second transmit beamforming sectors for subfields of the beamforming training fields. Said apparatus can be used in a split beamforming refinement phase based sector level sweep (split BRP-based SLS).