公开(公告)号：US20210176745A1

公开(公告)日：2021-06-10

申请号：US17181797

申请日：2021-02-22

Applicant: Apple Inc.

Inventor： Ralf Matthias Bendlin ,  Gang Xiong ,  Jong-Kae Fwu ,  Hong He ,  Yushu Zhang ,  Seunghee Han ,  Yuan Zhu

IPC: H04W72/04 ,  H04L5/00 ,  H04B1/7143 ,  H04L27/26

Abstract: Methods and apparatus are described for transmitting uplink control information (UCI) over an OFDMA-based uplink. In some embodiments, UCI symbols are mapped to resource elements (REs) in the time/frequency resource grid to maximize frequency diversity. In some embodiments, UCI is mapped in a manner that takes into account channel estimation performance by mapping UCI symbols to those REs that are closest (in terms of OFDM subcarriers/symbols) to REs that carry reference signals.

公开(公告)号：US11006429B2

公开(公告)日：2021-05-11

申请号：US16098792

申请日：2017-05-04

Applicant: Apple Inc.

Inventor： Alexei Vladimirovich Davydov ,  Gregory Vladimirovich Morozov ,  Victor Sergeev ,  Wook Bong Lee ,  Yuan Zhu

IPC: H04W72/08 ,  H04B7/08 ,  H04B7/06 ,  H04L5/00 ,  H04W72/04 ,  H04B7/0408 ,  H04W72/14

Abstract: Devices and methods of joint antenna panel switching and beam selection are generally described. A user equipment (UE) can be configured to decode configuration information received via a higher layer for a plurality of receive (Rx) beams for the UE, the configuration information identifying a plurality of Rx beam indices for the plurality of Rx beams. The UE is configured to decode a physical layer (PHY) communication indicating an antenna panel index and an Rx beam index of the plurality of Rx beam indices, the antenna panel index identifying an antenna panel of a plurality of available antenna panels of the UE. The UE is configured to decode a downlink (DL) data transmission, wherein the DL data transmission is received using the antenna panel and a selected Rx beam of the plurality of Rx beams corresponding to the indicated Rx beam index.

公开(公告)号：US10992722B2

公开(公告)日：2021-04-27

申请号：US16522272

申请日：2019-07-25

Applicant: APPLE INC.

Inventor： Honggang Li ,  Qinghua Li ,  Jong-Kae Fwu ,  Xiaogang Chen ,  Yuan Zhu

IPC: H04L29/08 ,  H04L29/06 ,  H04L12/24 ,  H04L12/26

Abstract: Techniques for facilitating device-to-device (D2D) communications using a high efficiency distributed channel access scheme are generally described herein. In some examples, a communication zone allocated for wireless D2D communications is divided into resource contention and scheduled transmission portions. The resource contention segment may be used to transmit a request message from a transmitting device to a receiving device (a request-to-send message), and transmit a response to the request message from the receiving device to the transmitting device (a clear-to-send message). The response can indicate a time for the data transmission to occur during the scheduled transmission segment. During the scheduled transmission segment, the scheduled data transmission and other D2D data transmissions among the various devices will be performed. In further examples, contention access techniques may be used during the resource contention segment to manage access to the resource channel.

公开(公告)号：US20210099222A1

公开(公告)日：2021-04-01

申请号：US17120931

申请日：2020-12-14

Applicant: Apple Inc.

Inventor： Yeong-Sun Hwang ,  Yuan Zhu ,  Elmar Wagner

IPC: H04B7/08 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0413

Abstract: A Multiple-Input-Multiple-Output (MIMO) antenna array configuration is described in one example comprising a plurality of Radio Frequency (RF) chains, a plurality of antenna elements, and a plurality of phase shifters, wherein the antenna elements and phase shifters form a plurality of antenna arrays, and coupled to the RF chains, and the number of antenna arrays is larger than the number of RF chains.

公开(公告)号：US10965351B2

公开(公告)日：2021-03-30

申请号：US16399731

申请日：2019-04-30

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Yuan Zhu ,  Gregory V. Morozov

IPC: H04B7/0456 ,  H04L25/02 ,  H04L5/00 ,  H04B7/06

Abstract: A method comprises configuring a transmission mode for a user equipment (UE) based on user equipment specific reference signals (UE-RS) and configuring one or more precoding resource groups; and providing a dynamic indication to indicate which precoding resource group is valid for a physical downlink shared channel.

公开(公告)号：US10797771B2

公开(公告)日：2020-10-06

申请号：US15752764

申请日：2016-04-01

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Yushu Zhang ,  Yuan Zhu ,  Huaning Niu ,  Jong-Kae Fwu

IPC: H04W72/04 ,  H04B7/06 ,  H04L5/00

Abstract: User Equipment (UE) and base station (eNB) apparatus and methodology for adjusting receive beamforming. A beam refinement reference signal (BRRS) is transmitted with the same transmit beam direction on which data is to be transmitted. While receiving the BRRS, the receiver varies its receive beam direction and measures a signal characteristic of reception of the BRRS to determine a refined receive beam direction. The refined receive beam direction is used to receive the data.

公开(公告)号：US20200274595A1

公开(公告)日：2020-08-27

申请号：US16807013

申请日：2020-03-02

Applicant: Apple Inc.

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

IPC: H04B7/06 ,  H04B7/0413

Abstract: Machine-readable media, methods, apparatus and system for beam acquisition in a wireless system are disclosed. In some embodiments, a base station may comprise a transceiver to transmit, to a user equipment (UE), a plurality of beam reference signals (BRSs) via a plurality of transmission beams; and to receive, from the UE, a report to report receiving information associated with at least one of the BRSs on at least one of the transmission beams, wherein the report comprises an antenna identifier to identify a directional antenna panel or an antenna port associated with the directional antenna panel of the UE which receives the at least one of the BRSs on the at least one of the transmission beam.

公开(公告)号：US10687269B2

公开(公告)日：2020-06-16

申请号：US15765540

申请日：2015-10-09

Applicant: Apple Inc.

Inventor： Huaning Niu ,  Hyejung Jung ,  Qian Li ,  Yuan Zhu

IPC: H04W4/00 ,  H04W48/12 ,  H04W76/14 ,  H04W74/08 ,  H04L5/00 ,  H04B7/06 ,  H04W88/08

Abstract: An architecture for wireless network access is described. In one example, a network entity comprises processing circuitry to define a downlink control channel comprising a synchronization signal, a physical broadcast channel (PBCH), and at least one slot for contention resolution or device-to-device (D2D) discovery and link setup, and broadcast a synchronization signal comprising the control channel from a plurality of remote radio heads (RRH). Other examples are also disclosed and claimed.

公开(公告)号：US20200177250A1

公开(公告)日：2020-06-04

申请号：US16780477

申请日：2020-02-03

Applicant: Apple Inc.

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

IPC: H04B7/06 ,  H04B7/08

Abstract: Devices for and methods of synchronous beam refinement using a beam refinement reference signal (BRRS) are generally described. In one example embodiment, a UE receives BRRS information indicating switching of a Tx beam. The UE then uses this information to switch an associated Rx beam. In some embodiments, timing information is used to match the switching times. In some embodiments. DCI and CSI-RS operations are used to determine switching for the synchronous beam refinement.

公开(公告)号：US10666334B2

公开(公告)日：2020-05-26

申请号：US15746983

申请日：2015-12-11

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Yushu Zhang ,  Yuan Zhu ,  Ralf Bendlin ,  Jong-Kae Fwu ,  Seunghee Han

IPC: H04B7/06 ,  H04L5/00 ,  H04W76/27 ,  H04L1/18 ,  H04L27/26 ,  H04W72/04 ,  H04W88/10

Abstract: In one example, an apparatus of an e-NodeB (eNB) capable to establish a communication connection with a user equipment (UE) in a communication network, the eNB comprising processing circuitry to transmit a downlink (DL) beamforming training reference signal (BF-TRS) to a user equipment (UE) using transmit beamforming weights that are the same. Other examples are also disclosed and claimed.