公开(公告)号：US20220006498A1

公开(公告)日：2022-01-06

申请号：US17480049

申请日：2021-09-20

Applicant: Apple Inc.

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

IPC: H04B7/06 ,  H04B7/0408 ,  H04B7/0456 ,  H04L5/00

Abstract: Apparatus, systems, and methods to implement receive beamforming in communication systems are described. In one example, apparatus of an evolved Node B (eNB) comprising processing circuitry to receive, from a user equipment (UE), a beamforming reference signal received power (BRS-RP) measurement and in response to the BRS-RP measurement, configure a downlink (DL) transmit (Tx) beamforming and a receiving (Rx) beamforming process on the UE. Other examples are also disclosed and claimed.

公开(公告)号：US20210314041A1

公开(公告)日：2021-10-07

申请号：US17350527

申请日：2021-06-17

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：US11122580B2

公开(公告)日：2021-09-14

申请号：US16407143

申请日：2019-05-08

Applicant: Apple Inc.

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

IPC: H04W72/08 ,  H04B7/26 ,  H04W72/04 ,  H04L5/14 ,  H04L1/18 ,  H04L5/00

Abstract: Embodiments of an Evolved Node-B (eNB), User Equipment (UE), and methods for flexible duplex communication are generally described herein. The eNB may transmit a downlink control information (DCI) block to the UE during a group of time-division duplex (TDD) sub-frames. The eNB may further receive an uplink control information (UCI) block from the UE during the group of TDD sub-frames. A first candidate flexible duplex format for the TDD sub-frames may include a downlink control portion and an uplink control portion. A second candidate flexible duplex format for the TDD sub-frames may include a downlink control portion and may exclude uplink control portions.

公开(公告)号：US11057179B2

公开(公告)日：2021-07-06

申请号：US16446860

申请日：2019-06-20

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Yuan Zhu ,  Yushu Zhang ,  Gang Xiong ,  Seunghee Han

IPC: H04W4/00 ,  H04L5/00 ,  H04L1/00 ,  H04W28/02 ,  H04W72/04 ,  H04W72/12

Abstract: Embodiments of a User Equipment (UE), an Evolved Node-B (eNB), and methods for communication of uplink messages are generally described herein. The UE may receive, from an eNB, one or more downlink control messages that may indicate an allocation of PUCCH channel resources. The UE may transmit an uplink control message in at least a portion of the allocated PUCCH channel resources. When the PUCCH channel resources are allocated according to an edge configuration, the PUCCH channel resources may be restricted to a lower edge portion and an upper edge portion of the network channel resources. When the PUCCH channel resources are allocated according to a distributed configuration, the PUCCH channel resources may include one or more middle portions of the network channel resources. The middle portions may be exclusive to the lower edge and upper edge portions.

公开(公告)号：US20210006995A1

公开(公告)日：2021-01-07

申请号：US16604982

申请日：2018-05-11

Applicant: Apple Inc.

Inventor： Jie Cui ,  Yang Tang ,  Rui Huang ,  Yuan Zhu ,  Shuang Tian

IPC: H04W24/10 ,  H04L27/26

Abstract: An invention to perform a method of cell measurement in a wireless network, wherein the wireless network comprises a plurality of frequency layers, the invention configured to: determine a Measurement Gap Length, MGL, for each one of the plurality of frequency layers operational in the wireless network; determine a gap bitmap to indicate a measurement gap availability in a time sequence for each one of the plurality of frequency layers of the wireless network; and transmit gap assistance information for each one of the plurality of frequency layers of the wireless network to a User Equipment, wherein the gap assistance information comprises at least the determined Measurement Gap Length and the determined gap bitmap.

公开(公告)号：US20240179593A1

公开(公告)日：2024-05-30

申请号：US18503610

申请日：2023-11-07

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Shirish Nagaraj ,  Bishwarup Mondal ,  Yuan Zhu ,  Yushu Zhang

IPC: H04W36/08 ,  H04W36/00 ,  H04W72/23

CPC classification number: H04W36/085 ,  H04W36/0064 ,  H04W72/23

Abstract: The first circuitry may be operable to establish a first UE Receive (Rx) beam as being for reception of data from a first eNB. The second circuitry may be operable to process a transmission including Downlink Control Information (DCI), wherein the DCI carries an eNB cell-switching indicator. The first circuitry may also be operable to establish a second UE Rx beam as being for reception of data from a second eNB based on the eNB cell-switching indicator.

公开(公告)号：US11870716B2

公开(公告)日：2024-01-09

申请号：US17958529

申请日：2022-10-03

Applicant: Apple Inc.

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

IPC: H04L5/00 ,  H04W72/21 ,  H04B1/7143 ,  H04L27/26 ,  H04W72/044 ,  H04L1/00

CPC classification number: H04L5/0044 ,  H04B1/7143 ,  H04L5/0007 ,  H04L5/0051 ,  H04L5/0055 ,  H04L27/2613 ,  H04W72/044 ,  H04W72/21 ,  H04L1/0026

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：US20230291446A1

公开(公告)日：2023-09-14

申请号：US18090853

申请日：2022-12-29

Applicant: Apple Inc.

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

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/0417 ,  H04L5/00 ,  H04B7/0452

CPC classification number: H04B7/046 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/063 ,  H04B7/0639 ,  H04L5/0014 ,  H04L5/0026 ,  H04B7/0647 ,  H04B7/065 ,  H04W84/042

Abstract: Various embodiments include an apparatus to be employed by an enhanced Node B (eNB), the apparatus comprising communication circuitry to receive, from a user equipment (UE), feedback information and control circuitry, coupled with the communication circuitry, to identify a codeword from a three-dimensional codebook based on the feedback information received from the UE, wherein the communication circuitry is further to precode data to be transmitted to the UE based on the codeword. An apparatus to be employed by a UE and additional methods are described.

公开(公告)号：US20230113485A1

公开(公告)日：2023-04-13

申请号：US18078438

申请日：2022-12-09

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Seunghee Han ,  Yuan Zhu ,  Xiaogang Chen ,  Alexander Maltsev ,  Gregory Morozov

IPC: H04W36/14 ,  H04L1/00 ,  H04L61/5007 ,  H04W12/02 ,  H04W72/21 ,  H04W72/23 ,  H04W72/30 ,  H04W76/14 ,  H04W76/11 ,  H04W76/10 ,  H04B7/024 ,  H04B7/0456 ,  H04B7/06 ,  H04J11/00 ,  H04L5/00 ,  H04L12/46 ,  H04L9/40 ,  H04W24/10 ,  H04W28/02 ,  H04W36/00 ,  H04W36/22 ,  H04W48/08 ,  H04W48/16 ,  H04W52/02 ,  H04W56/00 ,  H04W68/00 ,  H04W88/08

Abstract: Various embodiments are generally directed to improved channel quality information feedback techniques. In one embodiment, for example, an apparatus for a base station is provided that includes a radio interface and a processor coupled to the radio interface. The processor is configured to receive a channel quality indicator (CQI) index, wherein the CQI index is based on a channel state information (CSI) reference resource, further wherein a first three orthogonal frequency-division multiplexing (OFDM) symbols of the CSI reference resource are occupied by control signals, select a modulation and coding scheme (MCS) for a physical downlink shared channel (PDSCH) based on the CQI index, and cause transmission of the PDSCH based on the selected MCS via the radio interface. Other embodiments are described and claimed.

公开(公告)号：US11463141B2

公开(公告)日：2022-10-04

申请号：US16895143

申请日：2020-06-08

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Yuan Zhu ,  Hong He

IPC: H04B7/06 ,  H04B7/0456

Abstract: Codebook designs are disclosed for full-dimensional multiple-input-multiple output (FD-MIMO) wireless cellular systems. The FD-MIMO cookbooks employ channel state information reference signals (CSI-RS). The codebook designs are used in beamforming CSI-RSs by the enhanced nodeB (eNB), where the CSI-RS is sent to the user equipment (UE), enabling the UE to perform channel estimation. The codebooks support beam selection, co-phasing between polarizations, and beam combining.