公开(公告)号：US20200314706A1

公开(公告)日：2020-10-01

申请号：US16652834

申请日：2017-10-20

Applicant: Nokia Solutions and Networks Oy

Inventor： Liang XING ,  Richa GUPTA ,  Suresh KALYANASUNDARAM

IPC: H04W36/00 ,  H04B7/024 ,  H04W36/30

Abstract: Methods and apparatus for realizing dynamic point selection improve the cell-edge throughput and geometric mean of release 8/9 UEs. The method comprises a step of receiving estimated channel quality reported by all the TPs in the CoMP set, a step of switching the serving TP for the UEs based on the estimated channel quality and/or cell load, a step of forwarding the scheduled data from the primary TP to the serving TP, a step of separately transmitting PDCCH to the UEs by the primary TP and transmitting PDSCH to the UEs by the serving TP. the implementation of the method and apparatus improves the cell-edge throughput and geometric mean of UE throughput by serving UEs instantaneously from the cell that provides better throughput accounting for fast time-scale channel fluctuations and/or load. It helps in reducing interference due to data getting drained faster when users are served from cells with better channel conditions.

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：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：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.

公开(公告)号：US20200053735A1

公开(公告)日：2020-02-13

申请号：US16342687

申请日：2017-04-12

Applicant: Nokia Solutions and Networks Oy

Inventor： Richa GUPTA ,  Suresh KALYANASUNDARAM

IPC: H04W72/04 ,  H04L5/00 ,  H04W88/14

Abstract: Methods and Systems are disclosed for allocating a time-frequency resource of a large cell base station either to a selected first user equipment associated with the base station, or to a selected self-backhaul link associated with a small cell within the coverage area of the large cell base station. In embodiments, data is provided representing target allocation proportions of the time-frequency resource, for each of the first user equipment(s) and the one or more backhaul link(s). Allocations are made, for each of a series of time units or intervals, either to a selected first user equipment or backhaul link based on the target data.

公开(公告)号：US20160105834A1

公开(公告)日：2016-04-14

申请号：US14881251

申请日：2015-10-13

Applicant: Nokia Solutions and Networks Oy

Inventor： Richa GUPTA ,  Balamurali NATARAJAN ,  Suresh KALYANASUNDARAM

IPC: H04W36/24 ,  H04W36/38 ,  H04W36/10

CPC classification number: H04W36/0083 ,  H04L5/00

Abstract: Apparatuses, methods, computer programs, computer program products and computer-readable media regarding connection establishment robustness optimization are disclosed. Some example versions include calculating, at a base station, a switching metric for a user equipment served by the base station, the switching metric indicating whether the user equipment is to switch from a source cell to one of multiple target cells. The switching metric is calculated for a combination of the user equipment with a source cell and one of the multiple target cells. The base station determines whether to switch the user equipment from the source cell to one of the multiple target cells based on the switching metric, which includes spectral efficiencies of the user equipment for both the source cell and one of the multiple target cells, current cell load values for both the source cell and one of the multiple target cells and a correction factor.

Abstract translation: 公开了关于连接建立鲁棒性优化的装置，方法，计算机程序，计算机程序产品和计算机可读介质。 一些示例版本包括在基站处计算由基站服务的用户设备的交换度量，该交换度量指示用户设备是否要从源小区切换到多个目标小区之一。 针对用户设备与源小区和多个目标小区之一的组合计算交换度量。 基站基于切换度量来确定是否将用户设备从源小区切换到多个目标小区中，该切换度量包括源小区和多个目标小区之一的用户设备的频谱效率，当前小区 源单元和多个目标单元之一的负载值以及修正因子。