公开(公告)号：US10784942B2

公开(公告)日：2020-09-22

申请号：US15767113

申请日：2016-11-08

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Gang Xiong ,  Yuan Zhu ,  Huaning Niu ,  Yushu Zhang

IPC: H04B7/06 ,  H04L5/00 ,  H04W74/08 ,  H04W16/28

Abstract: Described is an apparatus of an Evolved Node-B (eNB). The apparatus may comprise a first circuitry, a second circuitry, and a third circuitry. The first circuitry may be operable to associate a first Beam Reference Signal (BRS) for a first Transmit (Tx) beam having a first beamwidth with one or more second BRSes for one or more respectively corresponding second Tx beams having a second beamwidth. The second circuitry may be operable to generate a first BRS transmission carrying the first BRS, and to generate one or more second BRS transmissions carrying the one or more respectively corresponding second BRSes. The third circuitry may be operable to provide information regarding the first BRS and the second BRSes to the second circuitry.

公开(公告)号：US20200287611A1

公开(公告)日：2020-09-10

申请号：US16881212

申请日：2020-05-22

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Huaning Niu ,  Yushu Zhang ,  Jong-Kae Fwu ,  Yuan Zhu ,  Ralf Matthias Bendlin

IPC: H04B7/06 ,  H04J11/00 ,  H04B7/08 ,  H04L5/00 ,  H04L27/26

Abstract: Disclosed herein are apparatuses, systems, and methods for reference signal design for initial acquisition, by receiving a first primary synchronization signal (PSS) and a first secondary synchronization signal (SSS) from a first transmit (Tx) beam, in first contiguous orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe. A UE can receive at least a second PSS and a second SSS from a second Tx beam in contiguous OFDM symbols of the downlink subframe. A UE can then detect beamforming reference signals (BRSs) corresponding to the first Tx beam and the second Tx beam, based on identification of physical cell ID information and timing information processed from the first PSS, the second PSS, the first SSS, and the second SSS. The UE can select the first Tx beam or the second Tx beam that was received with the highest power, based on the BRSs. Other embodiments are described.