公开(公告)号：US20220200146A1

公开(公告)日：2022-06-23

申请号：US17603716

申请日：2019-04-16

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Jinfeng DU ,  Marcin RYBAKOWSKI ,  Kamil BECHTA

IPC: H01Q3/36 ,  H01Q21/29 ,  H04B7/08

Abstract: A method, apparatus and computer program product are provided to select a plurality of antenna elements of an antenna array, such as to match the angular spread of the antenna array to a deployment scenario, thereby increasing the effective beamforming gain. In the context of a method, a plurality of antenna elements of an active antenna array are selected by separately selecting first, second and third pluralities of antenna elements and obtaining measures of first, second and third signals based upon transmission or reception of signals by the first, second and third pluralities of antenna elements, respectively The method additionally includes processing the measures of the first, second and third signals and determining a sub-army of antenna elements of the active antenna array to be utilized based on the processing of the measures of the first, second and third signals.

公开(公告)号：US20220239380A1

公开(公告)日：2022-07-28

申请号：US17584864

申请日：2022-01-26

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Jinfeng DU ,  Qi ZHOU ,  Di CHE

IPC: H04B10/58

Abstract: A radio apparatus and system may include a means for modulating and/or demodulating an optical signal for respective transmission and/or reception of the optical signal using an optical channel connected to a remote radio unit. There may also be provided a means for performing, based on one or more pre-trained computational models, one or more operations on a digital signal corresponding to the optical signal for mitigating one or more non-linearities introduced by the optical modulating and/or demodulating means and the optical channel. The one or more pre-trained computational models may be pre-trained based on feedback data indicative of said one or more non-linearities.

公开(公告)号：US20230396306A1

公开(公告)日：2023-12-07

申请号：US18203690

申请日：2023-05-31

Applicant: Nokia Solutions and Networks Oy

Inventor： Silvio Mandelli ,  Jinfeng DU

IPC: H04B7/06 ,  H04W16/28

CPC classification number: H04B7/06958 ,  H04W16/28

Abstract: An apparatus, including at least one processor, and at least one memory storing instructions, the at least one memory and the instructions configured to, with the at least one processor, cause a network device to determine excess resources available for uplink transmissions to the network device and to use at least a portion of the excess resources for a beam refinement process associated with at least one radio beam usable for an information exchange with at least one terminal device.

公开(公告)号：US20250038866A1

公开(公告)日：2025-01-30

申请号：US18772560

申请日：2024-07-15

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Mainak CHOWDHURY ,  Jinfeng DU

IPC: H04B17/309 ,  H04B7/0413

Abstract: Systems, methods, apparatuses, and computer program products for identifying optimal beamforming directions from a UE by using a beamspace image. One method may include detecting radio frequency energy in a beamspace of one or more lenses; digitizing, with parallel processing of a two-dimensional array, the detected radio frequency energy in the beamspace of the one or more lenses; and generating one or more images based upon the digitized radio frequency energy in the beamspace of the one or more lenses.

公开(公告)号：US20230328541A1

公开(公告)日：2023-10-12

申请号：US18125313

申请日：2023-03-23

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Jinfeng DU ,  Silvio MANDELLI

IPC: H04W16/28 ,  H04B7/06

CPC classification number: H04W16/28 ,  H04B7/0617

Abstract: An apparatus, comprising at least one processor, and at least one memory storing instructions, the at least one memory and the instructions configured to, with the at least one processor, cause the apparatus to: determine a power angular spectrum characterizing a power distribution associated with an antenna array in a two-dimensional angular range, determine a beam aiming direction estimation and an associated confidence, determine estimates for an azimuthal angular spread, ASD, and an elevation angular spread, ZSD, determine a best beam shape and best beam aiming direction according to a predetermined criterion based on at least one of a) the power angular spectrum, b) the beam aiming direction estimation and the associated confidence, c) the estimate for the azimuthal angular spread, d) the estimate for the elevation angular spread.

公开(公告)号：US20250062801A1

公开(公告)日：2025-02-20

申请号：US18787746

申请日：2024-07-29

Applicant: Nokia Solutions and Networks Oy

Inventor： Foad SOHRABI ,  Jinfeng DU

IPC: H04B7/0456 ,  H04B17/10

Abstract: A network node may generate an initial precoder for a plurality of antennas, determine antenna radiated power for each of the plurality of antennas based on the initial precoder, select a subset of antennas from the plurality of antennas based on the determined antenna radiated power, generate at least one transmission precoder for at least one selected antenna of the selected subset of antennas, and perform communication with at least one user equipment device using the at least one transmission precoder and the at least one selected antenna of the selected subset of antennas.

公开(公告)号：US20250007575A1

公开(公告)日：2025-01-02

申请号：US18745536

申请日：2024-06-17

Applicant: Nokia Solutions and Networks Oy

Inventor： Foad SOHRABI ,  Jinfeng DU

IPC: H04B7/0456

Abstract: Systems, methods, apparatuses, and computer program products for energy-efficient precoding with controllable power distribution. A method may include generating a digital precoder with controllable flatness based on at least one of a plurality of control parameters. The method may also include controlling flatness of a power distribution across a set of antennas, panels, or access points. The method may further include balancing, based on the control of the flatness of the power distribution, spectral efficiency and energy efficiency according to respective predefined values of spectral efficiency and energy efficiency. The balancing may include adjusting the at least one of the plurality of control parameters.

公开(公告)号：US20230251294A1

公开(公告)日：2023-08-10

申请号：US18103769

申请日：2023-01-31

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Silvio MANDELLI ,  Jinfeng DU

IPC: G01R29/08

CPC classification number: G01R29/0892

Abstract: An apparatus, comprising at least one processor, and at least one memory storing instructions, the at least one memory and the instructions configured to, with the at least one processor, cause the apparatus to sample an angular response of a uniform antenna array uniformly in a normalized angular frequency range to obtain a set of angular samples, and to reconstruct an angular response of the uniform antenna array based on the set of angular samples and at least one Dirichlet kernel.