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：US10785803B2

公开(公告)日：2020-09-22

申请号：US16163191

申请日：2018-10-17

Applicant: Apple Inc.

Inventor： Huaning Niu ,  Anthony Lee ,  Seau S. Lim ,  Wenting Chang ,  Salvatore Talarico

IPC: H04W4/00 ,  H04W74/08 ,  H04B7/06 ,  H04W72/04 ,  H04W72/14

Abstract: Embodiments of the present disclosure describe simplified RACH procedure and configuration for an eMTC system operating on unlicensed spectrum.

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：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：US12082090B2

公开(公告)日：2024-09-03

申请号：US17264685

申请日：2019-07-31

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Huaning Niu ,  Salvatore Talarico ,  Qiaoyang Ye ,  Rongrong Sun

IPC: H04W4/80 ,  H04L5/00 ,  H04L27/26 ,  H04W72/044 ,  H04W72/0446 ,  H04W72/23

CPC classification number: H04W4/80 ,  H04L5/0012 ,  H04L5/0051 ,  H04L27/2614 ,  H04W72/0446 ,  H04W72/0473 ,  H04W72/23

Abstract: Embodiments of the present disclosure provide for narrowband reference signals transmission. A base station is configured to: generate downlink transmissions for unlicensed Internet of things (U-IoT) communication, the downlink transmissions to include an anchor segment on a first plurality of subframes and a data segment on a second plurality of subframes, wherein the anchor segment includes a narrowband reference signal (NRS) configured to be transmitted at a first transmit power by the base station, to facilitate time or frequency tracking and cause transmission of the downlink frame for the U-IoT communication. And a user equipment is configured to receive the NRSs transmitted by the base station and process transmissions based on reception of the NRSs.

公开(公告)号：US20240080732A1

公开(公告)日：2024-03-07

申请号：US18508419

申请日：2023-11-14

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：US11647506B2

公开(公告)日：2023-05-09

申请号：US17843146

申请日：2022-06-17

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Yuan Zhu ,  Wenting Chang ,  Sungho Moon ,  Bishwarup Mondal

IPC: H04W72/04 ,  H04B17/318 ,  H04B7/06 ,  H04W36/00 ,  H04B7/0417 ,  H04L5/00 ,  H04W72/12 ,  H04B17/24 ,  H04B7/0456

CPC classification number: H04W72/0413 ,  H04B7/0417 ,  H04B7/0695 ,  H04B17/318 ,  H04L5/0051 ,  H04W36/0058 ,  H04W72/1231 ,  H04B7/0456 ,  H04B7/063 ,  H04B7/0626 ,  H04B17/24

Abstract: An apparatus of a user equipment (UE) may include a memory and one or more processors operatively coupled to the memory. The processors may process a scheduling trigger to provide channel state information (CSI) and beam information using extra-large physical uplink shared channel (xPUSCH). The processing device may also generate a reporting message comprising CSI and beam information. The processing device may then encode xPUSCH data to include the reporting message.

公开(公告)号：US11469870B2

公开(公告)日：2022-10-11

申请号：US17365685

申请日：2021-07-01

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：US11469806B2

公开(公告)日：2022-10-11

申请号：US16133208

申请日：2018-09-17

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Huaning Niu ,  Wenting Chang

IPC: H04B1/713 ,  H04B7/06 ,  H04L25/02 ,  H04L5/00 ,  H04W24/10 ,  H04L27/00 ,  H04W16/14 ,  H04W4/70 ,  H04W76/27 ,  H04W74/08

Abstract: Techniques described herein can facilitate Channel-State Information (CSI) measurement and feedback for communication in unlicensed spectrum or Sounding Reference Signal (SRS) transmission and/or channel-state estimation for communication in unlicensed spectrum. In an example, an apparatus is configured to be employed in a User Equipment (UE), and the apparatus comprises a Radio Frequency (RF) circuitry interface and processing circuitry configured to perform CSI measurement for communication in unlicensed spectrum. The apparatus further generates data for feedback according to the CSI measurement, and sends the data for feedback to RF circuitry via the RF circuitry interface. In an example, a frame structure of a data channel begins with a downlink (DL) transmission or soon after an initial signal. In an example, the CSI measurement includes measuring Channel Quality Information (CQI) for one or more sub-bands.

公开(公告)号：US11412450B2

公开(公告)日：2022-08-09

申请号：US16478246

申请日：2018-06-13

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Huaning Niu ,  Anthony Lee ,  Salvatore Talarico ,  Qiaoyang Ye

IPC: H04W52/02 ,  H04L5/00 ,  H04W4/70 ,  H04W72/00 ,  H04W72/04 ,  H04W68/00

Abstract: Machines or networked devices such as internet of things (IoT) devices operate to generate an unlicensed IoT (U-IoT) communication or enhanced Machine Type Communication (eMTC) based on frequency hopping operations on different channels. An anchor channel can be configured to carry system information and paging messages for the U-IoT/eMTC communication on the different channels. The system information and paging messages can include essential system information such as a system information block MulteFire (SIB-MF) message. Physical channels can be configured to enable component carriers anchored to a long term evolution (LTE) licensed band, and entirely comprise unlicensed carrier components that are unanchored to any LTE component carrier in a standalone configuration to enable transmission of the U-IoT communication in standalone communications in an unlicensed band.