公开(公告)号：US11025326B2

公开(公告)日：2021-06-01

申请号：US16479195

申请日：2018-06-13

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Sameer Pawar ,  Wook Bong Lee ,  Yushu Zhang ,  Victor Sergeev ,  Joonyoung Cho ,  Dmitry Dikarev

IPC: H04B7/06

Abstract: Herein described are apparatuses, systems, and methods for measurement and reporting of channel state information within wireless network systems. In embodiments, an apparatus for a user equipment (UE) may include memory to store a rank indicator (RI), a precoding matrix index (PMI), and a channel quality indicator (CQI) of channel state information (CSI) for the UE. The apparatus may further include circuitry to concatenate the RI, the PMI, and the CQI to produce a concatenated CSI element, generate a CSI report that includes the concatenated CSI element, and cause the CSI report to be transmitted to a base station within a single slot. Other embodiments may be described and/or claimed.

公开(公告)号：US11019522B2

公开(公告)日：2021-05-25

申请号：US15722869

申请日：2017-10-02

Applicant: Apple Inc.

Inventor： Seunghee Han ,  Hong He ,  Jong-Kae Fwu ,  Alexei Davydov ,  Ilya Bolotin

IPC: H04W28/02 ,  H04W4/70 ,  H04W76/30 ,  H04W76/28 ,  H04W36/00 ,  H04W72/04 ,  H04W40/00 ,  H04W40/24 ,  H04W52/02 ,  H04W52/04 ,  H04B17/318 ,  H04W76/12 ,  H04W76/15 ,  H04W76/23 ,  H04W76/27 ,  H04J3/16 ,  H04J11/00 ,  H04L1/18 ,  H04L5/00 ,  H04L5/14 ,  H04L12/24 ,  H04L29/06 ,  H04L29/08 ,  H04W8/08 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W28/08 ,  H04W28/16 ,  H04W36/22 ,  H04W48/16 ,  H04W48/20 ,  H04W52/14 ,  H04W72/02 ,  H04W72/08 ,  H04W72/12 ,  H04W74/00 ,  H04W88/02 ,  H04W76/16 ,  H04L12/26 ,  H04W36/14 ,  H04W88/06 ,  H04W72/00 ,  H04W80/10 ,  H04W84/12 ,  H04W88/08 ,  H04W88/18 ,  H04W84/04 ,  H04W88/12 ,  H04W88/14 ,  H04W88/16

Abstract: Technology for a user equipment (UE) operable to report periodic channel state information (CSI) to an eNodeB is disclosed. The UE can determine a reporting period (Npd) of a serving cell of the UE. The UE can determine a Time-Division Duplex (TDD) uplink-downlink (UL-DL) configuration of a primary cell of the UE. The UE can encode multiple periodic CSI reports for transmission to the eNodeB using a physical uplink control channel (PUCCH) on the primary cell according to the reporting period Npd.

公开(公告)号：US11018743B2

公开(公告)日：2021-05-25

申请号：US16312645

申请日：2017-02-06

Applicant: Apple Inc.

Inventor： Alexei Davydov

IPC: H04W8/08 ,  H04B7/06 ,  H04L5/00 ,  H04W16/28 ,  H04W64/00 ,  H04W72/04

Abstract: Techniques for employing QCL (Quasi Co-Location) signaling for beamforming management are discussed. One example embodiment can comprise an apparatus that can determine whether a first set of RS (Reference Signal) APs (Antenna Ports) are QCL-ed (Quasi Co-Located) with a second set of RS APs with respect to one or more large-scale channel properties, wherein the properties comprise an average angle-of-arrival and an angle of arrival spread, and wherein the first set of RS APs are distinct from the second set of RS APs; and select, based on the determination, beamforming weights for reception via the second set of RS APs. In the same or other embodiments, QCL can be indicated between RS antenna port(s) and antenna port(s) of beam reference signal is used to assist UE beamforming for reception of data or control channel transmitted on DM-RS antenna ports.

公开(公告)号：US10985848B2

公开(公告)日：2021-04-20

申请号：US16483982

申请日：2018-05-15

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Wook Bong Lee ,  Dae Won Lee ,  Seunghee Han ,  Alexei Davydov ,  Guotong Wang ,  Gregory Morozov

IPC: H04B17/327 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/08

Abstract: Provided herein are method and apparatus for perform radio link monitoring (RLM) based on a Reference signal (RS). An embodiment provides a user Equipment (UE) comprising circuitry configured to: decode a Reference Signal (RS) received from an access node; and determine beam quality for one or more beam pair links (BPLs) of the RS between the UE and the access node based on the decoded RS, wherein each of the BPLs comprises a transmit (Tx) beam of the access node and a receive (Rx) beam of the UE. Also provided is a procedure of RLM. At least some embodiments allow for beam recovery request for UE beam refinement, and allow for determining whether radio link failure (RLF) occurs.

公开(公告)号：US10966183B2

公开(公告)日：2021-03-30

申请号：US16245970

申请日：2019-01-11

Applicant: APPLE INC.

Inventor： Guotong Wang ,  Alexei Davydov ,  Yushu Zhang

IPC: H04W72/04 ,  H04L5/00 ,  H04W68/02 ,  H04W48/10 ,  H04W72/14 ,  H04W48/12 ,  H04B7/06 ,  H04B7/08 ,  H04W56/00 ,  H04W74/08

Abstract: Technology for a user equipment (UE) configured to perform beam failure recovery. The UE can encode a beam failure recovery (BFR) request for transmission on a physical random-access channel (PRACH) or a physical uplink control channel (PUCCH) to a next generation node B (gNB). The UE can monitor a dedicated physical downlink control channel (PDCCH) control resource set (CORESET) for a response from the gNB to the beam failure recovery request. The UE can select a default physical downlink shared channel (PDSCH) beam, wherein it is assumed, at the UE that a same quasi co-location (QCL) assumption for a PDSCH as a QCL assumption for the dedicated PDCCH CORESET; or a PDSCH demodulation reference signal (DMRS) is QCLed with a downlink (DL) reference signal (RS) of an identified candidate beam by the UE. The UE can decode a beam failure recovery request response from the gNB.

公开(公告)号：US10925005B2

公开(公告)日：2021-02-16

申请号：US16079494

申请日：2017-03-23

Applicant: APPLE INC.

Inventor： Alexei Davydov ,  Hyejung Jung ,  Gregory Morozov ,  Victor Sergeev

IPC: H04W52/14 ,  H04W52/42 ,  H04W52/58

Abstract: This disclosure proposes to use multiple power control loops in the uplink. Each power control loop may be associated with a respective antenna beam transmitted from an antenna array of the electronic device (e.g. UE) in the uplink. For example, a beam (or uplink signal) may be associated with 1, 2 or even more MIMO layer. Hence, in this latter case, each power control loop may be associated with a respective set of one or more MIMO layers. This concept is application to open-loop, closed-loop power control or both.

公开(公告)号：US10862645B2

公开(公告)日：2020-12-08

申请号：US16408107

申请日：2019-05-09

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Gregory Morozov ,  Vadim Sergeyev ,  Alexander Maltsev ,  Ilya Bolotin

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/0413 ,  H04B7/024

Abstract: Methods, systems, and storage media for providing multi-cell, multi-point single user (SU) multiple input and multiple output (MIMO) operations are described. In embodiments, an apparatus may receive and process a first set of one or more independent data streams received in a downlink channel from a first transmission point. The apparatus may receive and process a second set of one or more independent data streams received in a downlink channel from a second transmission point. The apparatus may process control information received from the first transmission point or the second transmission point. The control information may include an indication of a quasi co-location assumption to be used for estimating channel characteristics for reception of the first set of one or more independent data streams or the second set of one or more independent data streams. Other embodiments may be described and/or claimed.

公开(公告)号：US10826571B2

公开(公告)日：2020-11-03

申请号：US16475733

申请日：2017-12-15

Applicant: Apple Inc.

Inventor： Dae Won Lee ,  Seunghee Han ,  Ajit Nimbalker ,  Alexei Davydov ,  Paul C. Wei ,  Dmitry Dikarev

IPC: H04L5/00 ,  H04B7/0413 ,  H04L1/00

Abstract: Embodiments of a Generation Node-B (gNB), User Equipment (UE) and methods for communication are generally described herein. The gNB may map data symbols to resource elements (REs) of virtual resource blocks (VRBs). The gNB may interleave the data symbols, on a per-VRB basis, to spatial layers of a multi-layer multiple-input multiple-output (MIMO) transmission. The data symbols may be interleaved based on different interleave patterns of VRB indexes for the spatial layers. The gNB may map the interleaved data symbols of the spatial layers to REs of physical resource blocks (PRBs) for orthogonal frequency division multiplexing (OFDM) transmission.

公开(公告)号：US20200296753A1

公开(公告)日：2020-09-17

申请号：US16886256

申请日：2020-05-28

Applicant: Apple Inc.

Inventor： Ajit Nimbalker ,  Alexei Davydov ,  Gang Xiong ,  Yushu Zhang

IPC: H04W72/12 ,  H04W72/14 ,  H04L5/00 ,  H04L1/18 ,  H04L27/26

Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The UE may receive an information element (IE) that includes: a higher layer parameter that indicates a plurality of modulation and coding scheme (MCS) thresholds; and another higher layer parameter that includes a plurality of resource block (RB) thresholds. The UE may determine a time density of phase tracking reference signal (PT-RS) to be transmitted by the UE based at least partly on a comparison between a MCS and the plurality of MCS thresholds. The UE may determine a frequency density of the PT-RS based at least partly on a comparison between a scheduled bandwidth and the plurality of RB thresholds. The UE may encode the PT-RS for transmission in accordance with the determined time density and the determined frequency density.

公开(公告)号：US20200274660A1

公开(公告)日：2020-08-27

申请号：US16646188

申请日：2018-09-10

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Alexei Davydov ,  Seunghee Han ,  Yushu Zhang ,  Joonyoung Cho

IPC: H04L5/00

Abstract: Methods and apparatuses for channel state information report on physical uplink shared channel in new radio are provided. An apparatus for a user equipment (UE), comprising: a processor, configured to generate a uplink (UL) signal data for a physical uplink shared channel (PUSCH) by using a resource mapping scheme; and a radio frequency (RF) interface, configured to receive the generated UL signal data from the processor, wherein at least a part of the resource mapping scheme is predefined, configured by higher layer signalling, or indicated in downlink control information (DCI).