公开(公告)号：US11843426B2

公开(公告)日：2023-12-12

申请号：US18103597

申请日：2023-01-31

Applicant: Nokia Solutions and Networks Oy

Inventor： Richa Gupta ,  Suresh Kalyanasundaram ,  Deepak Kumar Nayak ,  Rakshak Agrawal ,  Shalini Gulati

IPC: H04L1/02 ,  H04B17/345 ,  H04B7/0452

CPC classification number: H04B17/345 ,  H04B7/0452

Abstract: An apparatus including: a MIMO antenna for transmitting beamformed signals on a plurality of beams using a common frequency- and time-limited physical channel resource; circuitry for computing a beamforming gain of each beam in each sub-sector in a coverage area of said plurality of beams; circuitry for determining a beam dominance region of each beam within the coverage area of said plurality of beams; circuitry for determining, within the dominance region of each beam, an average of the beamforming gain of each of the other beams at least partially co-locating within said beam dominance region; circuitry for determining inter-beam interference estimations as an average interference of each beam from each of said other beams; and circuitry for scheduling transmissions of the beams by said MIMO antenna on said common frequency- and time-limited physical channel resource based on said inter-beam interference estimations.

公开(公告)号：US12250039B1

公开(公告)日：2025-03-11

申请号：US18802443

申请日：2024-08-13

Applicant: Nokia Solutions and Networks Oy

Inventor： Bala Venkata Ramulu Gorantla ,  Suresh Kalyanasundaram ,  Shalini Gulati

IPC: H04B7/06 ,  H04L5/00 ,  H04W24/10

Abstract: An apparatus for a communication system, the apparatus comprising at least one processor, and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to: determine a first measurement of first reference signals associated with a first analog beam used to receive the first reference signals, determine a second measurement of second reference signals associated with a second analog beam used to receive the second reference signals, determine first information characterizing a digital beamformer based on the first measurement and the second measurement.

公开(公告)号：US20240250735A1

公开(公告)日：2024-07-25

申请号：US18416195

申请日：2024-01-18

Applicant: Nokia Solutions and Networks Oy

Inventor： Suresh Kalyanasundaram ,  Shalini Gulati ,  Lorenzo Maggi

IPC: H04B7/06

CPC classification number: H04B7/0686 ,  H04B7/0628

Abstract: A method includes obtaining elevation angle information for a plurality of user devices, wherein the elevation angle information includes, for each of the plurality of user devices, a best or preferred beam elevation angle used or applied by a network node for communication with the user device; estimating an elevation angle distribution for the plurality of user devices based on the collected elevation angle information; determining, based on the elevation angle distribution, a set of analog beamforming weights to be used for hybrid beamforming, wherein each analog beamforming weight of the set of analog beamforming weights is associated with an analog elevation angle; and adjusting the set of analog beamforming weights based on at least one of a set of pre-tilt angle beamforming weights or an estimated (or an estimate of) mechanical downtilt angle.

公开(公告)号：US11838876B2

公开(公告)日：2023-12-05

申请号：US18108285

申请日：2023-02-10

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Suresh Kalyanasundaram ,  Saikat Saha ,  Shalini Gulati

IPC: H04W52/36 ,  H04L1/00 ,  H04L47/62

CPC classification number: H04W52/365 ,  H04L1/0003 ,  H04L1/0009 ,  H04L47/6225

Abstract: According to an aspect, there is provided an apparatus for performing the following. The apparatus is configured to, first, allocate one or more of a plurality of available physical resource blocks to a plurality of terminal devices, wherein the allocating is performed so that a power spectral density for the plurality of terminal devices matches or exceeds a pre-defined limit or a plurality of respective pre-defined limits for power spectral density. In response to one or more physical resource blocks being still available following said allocating, the apparatus is configured to further allocate at least one of the one or more physical resource blocks still available to at least one of the plurality of terminal devices, wherein the further allocating is performed so that at least a pre-defined value for a modulation and coding scheme index is sustainable for said at least one of the plurality of terminal devices.

公开(公告)号：US12301495B2

公开(公告)日：2025-05-13

申请号：US17798753

申请日：2020-02-12

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Shalini Gulati ,  Rajeev Agrawal ,  Suresh Kalyanasundaram ,  Richa Gupta ,  Jinesh P Nair

IPC: H04L5/00 ,  H04W24/08

Abstract: An apparatus, method and computer program is described above: determining a coupling gain for a user device within a cell of a mobile communication system; comparing the determined coupling gain with a coupling gain threshold; setting the user device to operate in a device-specific CSI-RS mode of operation in the event that the determined coupling gain is less than the coupling gain threshold, wherein, in the device-specific CSI-RS mode of operation, the user device is configured to use device-specific reference signal transmissions for the determination of channel state information; and setting the user device to operate in a cell-specific CSI-RS mode of operation in the event that the determined coupling gain is not less than the coupling gain threshold, wherein, in the cell-specific CSI-RS mode of operation, the user device is configured to use cell-specific reference signal transmissions for the determination of channel state information.

公开(公告)号：US12057908B2

公开(公告)日：2024-08-06

申请号：US18515666

申请日：2023-11-21

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Muhammad Ayyaz Qureshi ,  Tilman Felgentreff ,  Martin Steiert ,  Suresh Kalyanasundaram ,  Shalini Gulati

IPC: H04W4/00 ,  H04B7/0408 ,  H04B7/06 ,  H04B7/08

CPC classification number: H04B7/0617 ,  H04B7/0408 ,  H04B7/0877

Abstract: A method and apparatus determine a transmission beam for downlink transmissions, and provides first beamforming instructions for forming the transmission beam to a transmission path. The method and apparatus also determine at least one receiving beam that is a first receiving beam, and at least one receiving beam that is a second receiving beam. A first antenna sub-array is configured to provide a first plurality of concurrent receiving beams and a second antenna sub-array is configured to provide a second plurality of concurrent receiving beams, providing second beamforming instructions, for forming at least the first receiving beam and at least the second receiving beams, to a first receiving path and a second receiving path, respectively.

公开(公告)号：US20230254074A1

公开(公告)日：2023-08-10

申请号：US18106598

申请日：2023-02-07

Applicant: Nokia Solutions and Networks Oy

Inventor： Suresh Kalyanasundaram ,  Shalini Gulati

IPC: H04L1/20 ,  H04L1/00 ,  H04B17/336 ,  H04W24/08

CPC classification number: H04L1/203 ,  H04L1/0026 ,  H04B17/336 ,  H04W24/08

Abstract: Various example embodiments may relate to link adaptation. An apparatus may determine a first signal quality estimate for a signal. The apparatus may further determine a BLER estimate based on acknowledgements or decoding results for data blocks of the signal. The apparatus may further determine a second signal quality estimate for the signal based on the BLER estimate. The apparatus may further determine a signal quality offset based on a difference between the first signal quality estimate and the second signal quality estimate. The apparatus may further determine transmission parameter(s) for at least one subsequent data block based on the first signal quality estimate and the signal quality offset.

公开(公告)号：US11956766B2

公开(公告)日：2024-04-09

申请号：US18118373

申请日：2023-03-07

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Muhammad Ayyaz Qureshi ,  Martin Steiert ,  Tilman Felgentreff ,  Suresh Kalyanasundaram ,  Jinesh P. Nair ,  Shalini Gulati

IPC: H04W72/044 ,  H04W16/28 ,  H04W72/52

CPC classification number: H04W72/046 ,  H04W72/52 ,  H04W16/28

Abstract: A method comprises selecting a beam to be scheduled for a slot that is upcoming, and selecting a terminal device to be scheduled in the selected beam. Selection of the terminal device is based on the terminal device considering the selected beam as its best beam. Physical resource blocks are allocated to the terminal device, and a beam configuration to be used for the selected beam is chosen based in part on user traffic and load distribution. A switching event is triggered. The switching event comprises producing the chosen beam configuration by providing a beamforming command and using a control line controlling a switch network comprised in phase shifters to steer the beam. The phase shifters are comprised in a radio frequency front-end unit comprising a plurality of antenna columns. The phase shifters are placed in front of selected antenna sub-arrays comprised in the plurality of antenna columns.

公开(公告)号：US11902034B2

公开(公告)日：2024-02-13

申请号：US18106598

申请日：2023-02-07

Applicant: Nokia Solutions and Networks Oy

Inventor： Suresh Kalyanasundaram ,  Shalini Gulati

IPC: H04L1/20 ,  H04B17/336 ,  H04L1/00 ,  H04W24/08

CPC classification number: H04L1/203 ,  H04B17/336 ,  H04L1/0026 ,  H04W24/08

Abstract: Various example embodiments may relate to link adaptation. An apparatus may determine a first signal quality estimate for a signal. The apparatus may further determine a BLER estimate based on acknowledgements or decoding results for data blocks of the signal. The apparatus may further determine a second signal quality estimate for the signal based on the BLER estimate. The apparatus may further determine a signal quality offset based on a difference between the first signal quality estimate and the second signal quality estimate. The apparatus may further determine transmission parameter(s) for at least one subsequent data block based on the first signal quality estimate and the signal quality offset.

公开(公告)号：US20230254056A1

公开(公告)日：2023-08-10

申请号：US18103597

申请日：2023-01-31

Applicant: Nokia Solutions and Networks Oy

Inventor： Richa Gupta ,  Suresh Kalyanasundaram ,  Deepak Kumar Nayak ,  Rakshak Agrawal ,  Shalini Gulati

IPC: H04B17/345 ,  H04B7/0452

CPC classification number: H04B17/345 ,  H04B7/0452

Abstract: An apparatus comprising: a MIMO antenna for transmitting beamformed signals on a plurality of beams using a common frequency- and time-limited physical channel resource; means for computing a beamforming gain of each beam in each sub-sector in a coverage area of said plurality of beams; means for determining a beam dominance region of each beam within the coverage area of said plurality of beams; means for determining, within the dominance region of each beam, an average of the beamforming gain of each of the other beams at least partially co-locating within said beam dominance region; means for determining inter-beam interference estimations as an average interference of each beam from each of said other beams; and means for scheduling transmissions of the beams by said MIMO antenna on said common frequency- and time-limited physical channel resource based on said inter-beam interference estimations.