公开(公告)号：US12224828B2

公开(公告)日：2025-02-11

申请号：US17430642

申请日：2020-02-06

Applicant: Apple Inc.

Inventor： Victor Sergeev ,  Alexei Davydov ,  Bishwarup Mondal ,  Dmitry Dikarev

IPC: H04B7/06

Abstract: Some embodiments of this disclosure include apparatuses and methods for reporting channel state information (CSI) for multiple spatial layers. The apparatuses and methods can include at least: determining, by a user equipment (UE), a precoding matrix indicator (PMI) for a set of precoding matrixes, wherein the PMI is determined based on a combination of digital Fourier transformation (DFT) spatial domain (SD) vectors, or based on DFT-based frequency domain (FD) compression; and transmitting, by the UE, the PMI to a next-generation NodeB (gNB).

公开(公告)号：US11903093B2

公开(公告)日：2024-02-13

申请号：US17949957

申请日：2022-09-21

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Gregory V. Morozov ,  Victor Sergeev ,  Ajit Nimbalker ,  Grigory Ermolaev ,  Dmitry Dikarev

IPC: H04W4/00 ,  H04W88/06 ,  H03M13/13 ,  H04B7/0413 ,  H04B7/06 ,  H04L5/00 ,  H04W4/06 ,  H04W72/1273

CPC classification number: H04W88/06 ,  H03M13/13 ,  H04B7/0413 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0639 ,  H04L5/0035 ,  H04L5/0044 ,  H04W4/06 ,  H04W72/1273

Abstract: Described is an apparatus of a User Equipment (UE) operable to communicate with a fifth generation Evolved Node-B (gNB) on a wireless network. The apparatus includes a first circuitry and a second circuitry. The first circuitry may be operable to determine a first parameter set and a second parameter set for establishing Physical Downlink Shared Channel (PDSCH) resources. The second circuitry may be operable to process a first part of a PDSCH transmission from a first set of Multiple Input Multiple Output (MIMO) layers corresponding with a first Multimedia. Broadcast Single Frequency Network (MBSFN) configuration based on the first parameter set. The second circuitry may also be operable to process a second part of the PDSCH transmission from a second set of MIMO layers corresponding with a second MBSFN configuration based on the second parameter set.

公开(公告)号：US11812390B2

公开(公告)日：2023-11-07

申请号：US17248900

申请日：2021-02-12

Applicant: Apple Inc.

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

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

CPC classification number: H04W52/146 ,  H04W52/42 ,  H04W52/58

Abstract: This disclosure proposes a mobile communication system 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 of the communication system. Each power control loop may also be associated with a respective set of one or more MIMO layers. This concept is applicable to open-loop, closed-loop power control or both.

公开(公告)号：US11101953B2

公开(公告)日：2021-08-24

申请号：US16473579

申请日：2018-02-05

Applicant: Apple Inc.

Inventor： Wook Bong Lee ,  Alexei Davydov ,  Yushu Zhang ,  Victor Sergeev

IPC: H04W4/00 ,  H04L5/00 ,  H04B7/0456 ,  H04W24/08 ,  H04W72/04

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 generate control information, the control information including a configured number of ports; receive a plurality of sounding reference signals (SRS) via the RF interface from a user equipment (UE) device, wherein each of the plurality of SRS is associated with one of the one or more precoders; and generate a ranking of a the one or more precoders based on the received plurality of SRS, wherein the plurality of SRS are associated with the one or more precoders.

公开(公告)号：US11088751B2

公开(公告)日：2021-08-10

申请号：US16305986

申请日：2017-06-05

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Victor Sergeev ,  Gregory V. Morozov

IPC: H04B7/06 ,  H04B17/318 ,  H04B17/345 ,  H04B7/08

Abstract: Techniques for interference-based beam selection are discussed. One example embodiment employable in a UE (User Equipment) can comprise a processor configured to: determine one or more parameters based on configuration signaling, wherein each of the one or more parameters is associated with at least one of channel measurements, interference measurements, or a beam information report; perform the interference measurements for each of one or more distinct UE beams; calculate a measurement metric for each beam pair of one or more beam pairs based on the interference measurements, wherein each beam pair comprises one of the one or more distinct UE beams and an associated NW (Network) beam; and generate the beam information report comprising the measurement metric for at least one beam pair of the one or more beam pairs.

公开(公告)号：US11575554B2

公开(公告)日：2023-02-07

申请号：US16055964

申请日：2018-08-06

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Gang Xiong ,  Debdeep Chatterjee ,  Hong He ,  Gregory Morozov ,  Sameer Pawar ,  Yushu Zhang ,  Victor Sergeev ,  Dmitry Dikarev ,  Daewon Lee

IPC: H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  H04B7/06 ,  H04W76/11 ,  H04W76/27 ,  H04L1/00 ,  H04W88/06

Abstract: A scrambling sequence generation method is disclosed for reference signals, data, and downlink and uplink control channels. The scrambling sequence generation method determines an initial seed value used to calculate the scrambling sequence. The initial seed value is based on different parameters relating to the to be transmitted signals, and some of these parameters are explicitly defined for New Radio.

公开(公告)号：US11515917B2

公开(公告)日：2022-11-29

申请号：US17417302

申请日：2020-01-18

Applicant: Apple Inc.

Inventor： Victor Sergeev ,  Alexei Davydov ,  Bishwarup Mondal ,  Gregory Morozov ,  Dmitry Dikarev

IPC: H04B7/06 ,  H04B7/0456

Abstract: An approach is described that includes receiving a CSI report, where the CSI report includes a channel quality indicator (CQI), a rank indicator (RI), and a precoding matrix indicator (PMI). The approach further includes constructing a precoding matrix based on a linear combination of a plurality of mutually orthogonal digital Fourier transformation (DFT) spatial beams, and determining a number of bits for the PMI of the precoding matrix. The approach also includes determining a space frequency matrix based, at least in part, on the number of bits for the PMI and the precoding matrix, and compressing the space frequency matrix. Finally, the approach includes determining a compressed PMI based, at least in part, on the space frequency matrix.

公开(公告)号：US10951290B2

公开(公告)日：2021-03-16

申请号：US16172602

申请日：2018-10-26

Applicant: Apple Inc.

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

IPC: H04L27/26 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0408 ,  H04L1/18 ,  H04W72/04 ,  H04W76/27 ,  H04L1/00 ,  H04L1/16

Abstract: Described is an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node-B (eNB) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to process a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signal (PT-RSes). The second circuitry may be operable to generate an Uplink (UL) transmission carrying a Layer Indicator (LI) based at least on a number of PT-RS Antenna Ports (APs) associated with the PT-RSes.

公开(公告)号：US10939423B2

公开(公告)日：2021-03-02

申请号：US15765778

申请日：2016-06-23

Applicant: APPLE INC

Inventor： Alexei Davydov ,  Seunghee Han ,  Victor Sergeev ,  Hong He ,  Christian Ibars Casas

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04M13/00 ,  H04W76/27 ,  H04L27/26 ,  H03M13/09 ,  H03M13/11 ,  H03M13/41 ,  H03M13/29 ,  H03M13/23 ,  H03M13/00

Abstract: Techniques for detecting puncturing of a first PDSCH (physical downlink shared channel) associated with a UE (user equipment) by a second PDSCH with a shorter TTI (transmission time interval) are discussed. A base station (e.g., Evolved NodeB or eNB) can configure the UE for potential puncturing and/or parameter(s) of the second PDSCH. The UE can detect puncturing of the first PDSCH based on the configuration, and can discard punctured symbols to mitigate interference from the second PDSCH.

公开(公告)号：US11936454B2

公开(公告)日：2024-03-19

申请号：US17440942

申请日：2020-03-19

Applicant: Apple Inc.

Inventor： Victor Sergeev ,  Alexei Davydov ,  Dmitry Dikarev

IPC: H04B7/02 ,  H04B7/0456 ,  H04B7/06 ,  H04L1/00

CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04L1/0026

Abstract: Systems, devices, and techniques associated with coefficients for channel state information (CSI) reports are described. A described technique includes receiving, at a user equipment (UE), a CSI configuration and a codebook configuration, the codebook configuration specifying a codebook; determining a precoding matrix indicator (PMI) that specifies a precoding matrix associated with the codebook, wherein the precoding matrix is based on spatial-domain (SD) vectors and linear combining coefficients; and transmitting a CSI report containing the PMI in accordance with the CSI configuration.