公开(公告)号：US20250062807A1

公开(公告)日：2025-02-20

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：US20240098728A1

公开(公告)日：2024-03-21

申请号：US18367222

申请日：2023-09-12

Applicant: Nokia Solutions and Networks Oy

Inventor： Rakshak AGRAWAL ,  Suresh KALYANASUNDARAM

IPC: H04W72/12 ,  H04W72/0446

CPC classification number: H04W72/12 ,  H04W72/0446

Abstract: An apparatus includes circuitry configured for determining which one or more user equipment of a plurality of user equipment are to be scheduled in a scheduling round. This is based on an associated quality of service and on a time domain metric associated with a respective user equipment of the plurality of user equipment.

公开(公告)号：US20230275638A1

公开(公告)日：2023-08-31

申请号：US18114329

申请日：2023-02-27

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Suresh KALYANASUNDARAM ,  Lorenzo MAGGI ,  Deepak Kumar NAYAK

IPC: H04B7/06 ,  H04B7/0426

CPC classification number: H04B7/0632 ,  H04B7/043

Abstract: Beam and antenna array split configuration optimization is disclosed. A network node device generates a beam dictionary defining a set of beams. The network node device estimates a traffic density distribution for a radio channel based on obtained channel quality information. The network node device determines, for each of at least two array split configurations associated with a transceiver antenna array of the network node device, a set of optimal beams from the beam dictionary that optimizes a utility function, based on the estimated traffic density distribution. The network node device selects an array split configuration that maximizes the utility function across a coverage area of a radio cell associated with the network node device. The network node device applies the selected array split configuration to the transceiver antenna array in response to evaluating that the selected array split configuration improves downlink performance.

公开(公告)号：US20220217645A1

公开(公告)日：2022-07-07

申请号：US17605398

申请日：2020-05-15

Applicant: Nokia Solutions and Networks Oy

Inventor： Richa GUPTA ,  Suresh KALYANASUNDARAM

IPC: H04W52/14 ,  H04W52/24 ,  H04W52/28

Abstract: According to an aspect, there is provided a computing device for controlling terminal device uplink transmission power. Each terminal device is configured to determine uplink transmission power based on two power control parameters: a target received power for full pathloss compensation and a pathloss compensation coefficient. The computing device comprises means for performing the following. Information on data traffic in a plurality of cells is maintained in a database. The computing device initializes a deep Q-learning network in which a state is defined as cell-specific pairs of the power control parameters, an action is defined as a selection of valid values of power control parameters for a cell and a reward is calculated based on the information on data traffic. The computing device trains the deep Q-learning network to approximate a Q value function, determines optimal power control parameters based on thereon and causes transmitting them to access nodes.

公开(公告)号：US20200288349A1

公开(公告)日：2020-09-10

申请号：US16762875

申请日：2017-11-16

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Sheshachalam B S ,  Rajeev AGRAWAL ,  Suresh KALYANASUNDARAM

IPC: H04W28/08

Abstract: This document discloses a solution for selecting a transmission direction in a cell. A method comprises: determining, by a controller associated with a cell of a cellular communication system, a traffic asymmetry metric for the cell, the traffic asymmetry metric representing asymmetry between uplink and downlink traffic in the cell; comparing, by the controller, the traffic asymmetry metric with a threshold; upon determining, by the controller on the basis of the comparison, that the traffic asymmetry metric is one of greater and lower than the threshold, selecting a first transmission direction for a time interval; upon determining, by the controller on the basis of the comparison, that the traffic asymmetry metric is the other one of greater and lower than the threshold, selecting for the time interval a second transmission direction different from the first transmission direction, wherein the second transmission direction is a nominal transmission direction determined as common to a cell cluster comprising the cell and a set of neighboring cells, and wherein the controller determines the nominal transmission direction on the basis of traffic condition metrics acquired for the cell and for the set of neighboring cells; and causing data communication to the selected transmission direction in the cell during the time interval.

公开(公告)号：US20240097943A1

公开(公告)日：2024-03-21

申请号：US18238132

申请日：2023-08-25

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Richa GUPTA ,  Suresh KALYANASUNDARAM

IPC: H04L25/02 ,  H04B7/0456

CPC classification number: H04L25/021 ,  H04B7/0456

Abstract: A method includes estimating an uplink channel for a terminal device, based on an amount of antennas used by an access node for transmitting signals to the terminal device, antennas used for receiving the transmitted signals at the terminal device, and sub-bands used for transmitting the signals. Based on the estimation, a channel covariance matrix is determined for a precoder comprised in a transmitter of the access node by determining a limited number of elements of a full dimensional channel covariance matrix, which is different than the channel covariance matrix. The limited number of elements are elements corresponding to i-th row and j-th column of the channel covariance. Correlation computation is performed for the limited number of elements. Elements of the full-dimensional channel covariance matrix that are excluded from the limited number of elements are determined and set to be zero. Precoding is performed using the determined channel covariance matrix.

公开(公告)号：US20230284199A1

公开(公告)日：2023-09-07

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 ,  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：US20230262613A1

公开(公告)日：2023-08-17

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 ,  H04L47/62 ,  H04L1/00

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

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：US20230080729A1

公开(公告)日：2023-03-16

申请号：US17793698

申请日：2020-01-22

Applicant: Nokia Solutions and Networks Oy

Inventor： Chandrashekhar THEJASWI ,  Suresh KALYANASUNDARAM ,  Karthik KUNTIKANA SHRIKRISHNA ,  Francis DOMINIQUE ,  Lele SHEN

IPC: H04L25/03

Abstract: Embodiments of the present disclosure relate to a method, an apparatus and a computer readable storage medium for generating soft-decision information for a receiver. In example embodiments, a method is provided. The method includes receiving, at a first device, a signal from a second device, the signal corresponding to a group of symbols transmitted from the second device; determining, by performing Lattice Reduction linear detection on the signal, a first group of estimated symbols for the group of symbols; determining, by performing iterative interference cancellation on the first group of estimated symbols, a second group of estimated symbols for the group of symbols; and generating, based on the second group of estimated symbols, soft-decision information about the group of symbols for use by a decoder at the first device. Embodiments of the present disclosure can improve the receiver performance with reduced complexity.

公开(公告)号：US20230067024A1

公开(公告)日：2023-03-02

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.