公开(公告)号：US11152994B1

公开(公告)日：2021-10-19

申请号：US16884762

申请日：2020-05-27

Applicant: Apple Inc.

Inventor： Weidong Yang ,  Chunhai Yao ,  Chunxuan Ye ,  Dawei Zhang ,  Haitong Sun ,  Hong He ,  Ismael Gutierrez Gonzalez ,  Wei Zeng ,  Wei Zhang ,  Yuchul Kim ,  Yushu Zhang

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0413

Abstract: The systems, methods, and apparatuses can receive one or more communication signals traversing through a communication channel. The systems, methods, and apparatuses can estimate one or more known parameters, characteristics, and/or attributes of the communication channel, for example, scattering, fading, and/or power decay over distance, through a process referred to as channel estimation. The systems, methods, and apparatuses can develop various channel coefficients, for example, amplitudes and/or phases, describing the channel response of the communication channel at discrete intervals of time, also referred to as taps. The systems, methods, and apparatuses can assign taps to various priorities and, thereafter, utilize these priorities to selectively include their corresponding channel coefficients in a CSI report or exclude their corresponding channel coefficients from the CSI report.

公开(公告)号：US11146435B2

公开(公告)日：2021-10-12

申请号：US16408063

申请日：2019-05-09

Applicant: APPLE INC.

Inventor： Gang Xiong ,  Alexei Davydov ,  Alexey Khoryaev ,  Mikhail S. Shilov ,  Seung Hee Han ,  Yushu Zhang ,  Joonyoung Cho

IPC: H04L27/26 ,  H04W52/14 ,  H04L5/00 ,  H04W72/04

Abstract: Technology for a user equipment (UE) configured for communication of sounding reference signal (SRS) resources is disclosed. The UE can decode a radio resource control (RRC) signal indicating an SRS to transmit with a physical uplink control channel (PUCCH), wherein the PUCCH and the SRS are quasi co located (QCLed) based on a spatial received parameter. The UE can encode an SRS for transmission using the spatial received parameter. The UE can encode uplink control information (UCI) for transmission in the PUCCH using the spatial received parameter. The UE can have a memory interface configured to send to a memory the spatial received parameter.

公开(公告)号：US11121743B2

公开(公告)日：2021-09-14

申请号：US16500937

申请日：2018-05-04

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Alexei Davydov ,  Wook Bong Lee ,  Gang Xiong ,  Xinyue Zheng

IPC: H04K1/10 ,  H04L27/28 ,  H04B7/02 ,  H04B10/61 ,  H04L5/00 ,  H02J7/00

Abstract: An apparatus is configured to be employed within a base station. The apparatus comprises baseband circuitry which includes a radio frequency (RF) interface and one or more processors. The one or more processors are configured to arrange phase tracking reference signal (PT-RS) resource elements (REs) and data REs as an arrangement for a transmission based on one or more diversity factors. The one or more diversity factors include a time domain and a frequency domain. The one or more processors are also configured to provide the transmission having the PT-RS REs to the RF interface for transmission to a user equipment (UE) device.

公开(公告)号：US20210251015A1

公开(公告)日：2021-08-12

申请号：US17174315

申请日：2021-02-11

Applicant: Apple Inc.

Inventor： Chunhai Yao ,  Haitong Sun ,  Chunxuan Ye ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Hong He ,  Jie Cui ,  Oghenekome Oteri ,  Weidong Yang ,  Wei Zeng ,  Yang Tang ,  Yuchul Kim ,  Yuqin Chen ,  Yushu Zhang

IPC: H04W74/08 ,  H04W72/04 ,  H04W76/27

Abstract: The implementations disclosed provide apparatus, systems, and methods for channel structure construction for a two-step random access channel (RACH) using a new radio (NR) user equipment (UE) wireless device. The wireless device includes one or more computer processors configured to generate a physical RACH (PRACH) preamble mapped to a physical uplink shared channel (PUSCH) resource unit. The PRACH preamble is associated with a preamble group indicating a configuration of the PUSCH. The preamble group has a size indicated by radio resource control (RRC) signaling performed by the wireless device. A message is encoded including the PRACH preamble and a payload carried by the PUSCH. The configuration of the PUSCH includes parameters for decoding the message. The wireless device couples communicatively to a base station using the PUSCH. The message is transmitted to the base station. The base station decodes the message based on the parameters of the PUSCH configuration.

公开(公告)号：US11088749B2

公开(公告)日：2021-08-10

申请号：US16079034

申请日：2016-06-27

Applicant: Apple Inc.

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

IPC: H04B7/00 ,  H04B7/06 ,  H04L5/00 ,  H04L27/26 ,  H04B7/08 ,  H04W36/00 ,  H04W72/04 ,  H04B17/309 ,  H04B7/0413

Abstract: Devices for and methods of beam refinement using a beam refinement reference signal (BRRS) are generally described. A UE receives BRRS information indicating a BRRS position of at least one OFDM symbol in a first or last symbol pair in a subframe. The BRRS replaces the xPDCCH, the last two symbols of data (an xPDSCH or xPUSCH), or is TDMed with a GP. The data and BRRS are allocated to the UE or to different UEs. The BRRS information is provided via an indicator in the DCI or higher layer signaling. The UE refines either the current Rx beam or directly refines a candidate Rx beam and uses one or multiple symbols, as indicated by a BRRS format.

公开(公告)号：US11063652B2

公开(公告)日：2021-07-13

申请号：US16487155

申请日：2018-03-05

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Yushu Zhang ,  Alexei Davydov ,  Wook Bong Lee ,  Dae Won Lee ,  Guotong Wang

IPC: H04B7/06 ,  H04B1/7143 ,  H04B7/0413 ,  H04B7/08 ,  H04J13/00 ,  H04L5/00 ,  H04W48/16 ,  H04W72/04 ,  H04W72/08 ,  H04B1/715

Abstract: Techniques discussed herein can facilitate maintenance and/or recovery of BPL(s) (Beam Pair Link(s)). Various embodiments can employ aspects discussed herein can one or more of enable interference randomization for beam/link recovery signal(s) or reduce the overhead of UL (Uplink) beam management RS (Reference Signal(s)). Various embodiments can comprise UE(s) (User Equipment(s)) that can receive configuration signaling configuring the UE(s) to one or more of apply interference randomization to a beam/link recovery signal and/or generate a SR (Scheduling Request) channel for beam maintenance having reduced overhead and can transmit the beam/link recovery signal and/or SR channel. Additional embodiments can comprise gNB(s) (next Generation NodeB(s)) that can configure UE(s) for beam maintenance and/or recovery techniques discussed herein.

公开(公告)号：US20210212082A1

公开(公告)日：2021-07-08

申请号：US17269307

申请日：2019-09-24

Applicant: Apple Inc.

Inventor： Guotong Wang ,  Yushu Zhang ,  Gang Xiong ,  Alexei Davydov

IPC: H04W72/12 ,  H04B7/06 ,  H04W76/18 ,  H04W76/15

Abstract: Techniques discussed herein can facilitate determination of spatial (and/or beam) assumption(s) for PDSCH (Physical Downlink Shared Channel) transmitted after a BFR (Beam Failure Recovery) request but before TCI (Transmission Configuration Information) reconfiguration. One example embodiment can be an apparatus configured to: generate a BFR request that indicates a new candidate beam; process a CORESET (Control Resource Set)-BFR of a set of configured CORESETs, wherein the CORESET-BFR comprises a response to the BFR request; determine a spatial assumption for a first PDSCH based on the BFR request, wherein the first PDSCH is scheduled by a first CORESET of the set of configured CORESETs, wherein the first CORESET is different than the CORESET-BFR, wherein the first PDSCH is scheduled before a TCI state is one of reconfigured, reactivated, or re-indicated; and process the first PDSCH based on the determined spatial assumption for the first PDSCH.

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：US20210168011A1

公开(公告)日：2021-06-03

申请号：US16645360

申请日：2018-09-06

Applicant: Apple Inc.

Inventor： Alexei Vladimirovich Davydov ,  Guotong Wang ,  Gang Xiong ,  Yushu Zhang

IPC: H04L27/26 ,  H04L1/18 ,  H04L5/00 ,  H04L1/00 ,  H04W72/04

Abstract: A user equipment (UE) can include processing circuitry configured to decode downlink control information (DCI) from a base station, the DCI including a modulation coding scheme (MCS) index and physical uplink shared channel (PUSCH) allocation. A demodulation reference signal (DM-RS) is encoded for transmission to the base station within a plurality of DM-RS symbols based on the PUSCH allocation. A phase tracking reference signal (PT-RS) time domain density is determined based on the MCS index and a number count of the DM-RS symbols for the DM-RS transmission. The PT-RS is encoded for transmission using a plurality of PT-RS symbols based on the determined time domain density. The plurality of symbols includes one or both of front-loaded DM-RS symbols and additional DM-RS symbols.

公开(公告)号：US11012197B2

公开(公告)日：2021-05-18

申请号：US16245552

申请日：2019-01-11

Applicant: Apple Inc.

Inventor： Hong He ,  Gang Xiong ,  Debdeep Chatterjee ,  Joonyoung Cho ,  Yushu Zhang

IPC: H04L1/18 ,  H04W24/08 ,  H04W68/02 ,  H04L5/00 ,  H04W76/11 ,  H04W72/04 ,  H04L29/06 ,  H04L1/00 ,  H04W84/04

Abstract: An apparatus is configured to be employed within a user equipment (UE) device. The apparatus comprises baseband circuitry which includes a radio frequency (RF) interface and one or more processors. The one or more processors are configured to identify a plurality of monitoring occasions for a set of flexible control resource sets (CORESET); determine bit ordering for the plurality of monitoring occasions; generate hybrid automatic repeat request (HARQ) feedback based on the received downlink transmission; and incorporate the ordered plurality of monitoring occasions into the HARQ feedback.