公开(公告)号：US20240405830A1

公开(公告)日：2024-12-05

申请号：US18699432

申请日：2021-10-25

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Nuan SONG ,  Stefan WESEMANN ,  Olli Juhani PIIRAINEN ,  Rana Ahmed SALEM ,  Tao YANG ,  Yan ZHAO

IPC: H04B7/06

Abstract: Embodiments of the present disclosure relate to a beamforming solution for MIMO communication. The method implemented at a first device comprises: obtaining: a signature vector corresponding to a beam which is in a first direction from the first device to a second device, and a first channel covariance matrix associated with a transmission from the first device to the second device. The method further comprises generating, based on the signature vector and the first channel covariance matrix, a beamforming matrix to be used for the transmission from the first device to the second device. In this way, the accuracy of the beamforming matrix is improved and the calculation amount for the beamforming matrix is reduced.

公开(公告)号：US20240163053A1

公开(公告)日：2024-05-16

申请号：US18280709

申请日：2021-03-11

Applicant: NOKIA SHANGHAI BELL CO.,LTD. ,  NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Hao LIU ,  Baocai LI ,  Dan SHI ,  Tao YANG ,  Nuan SONG ,  Yan ZHAO

IPC: H04L5/00 ,  H04L25/02 ,  H04W28/06

CPC classification number: H04L5/0051 ,  H04L25/0226 ,  H04W28/06

Abstract: Embodiments of the present disclosure relate to methods, apparatuses and computer readable storage media for SRS data transmission. In example embodiments, a method is provided. According to the method, an apparatus forwards, during a first period, first SRS data received from a terminal device to a further apparatus. The further apparatus determines, based on the first SRS data, compression information for compressing SRS data, and transmits the compression information to the apparatus. Thereby, the apparatus compresses, during a second period, second SRS data received from the terminal device based on the compression information, and transmits, during the second period, the compressed second SRS data to the further apparatus. In this way, the SRS data can be effectively compressed, thus reducing the latency of the SRS data transmission.

公开(公告)号：US20250007594A1

公开(公告)日：2025-01-02

申请号：US18712460

申请日：2021-11-25

Applicant: Nokia Solutions and Networks Oy

Inventor： Yan ZHAO ,  Hao LIU ,  Stefan WESEMANN ,  Nuan SONG ,  Rana AHMED SALEM ,  Tao YANG

IPC: H04B7/06 ,  H04W72/044

Abstract: Various example embodiments relate to devices and methods supporting beam selection adaptive to user equipment distribution. A network device may be configured to sweep a first set of beams predefined for a cell, determine one or more supplement beams for one or more user equipments in the cell, and sweep at least a portion of the one or more supplement beams. The one or more supplement beams are selected from a second set of beams different from the first set of beams.

公开(公告)号：US20240195474A1

公开(公告)日：2024-06-13

申请号：US18555400

申请日：2021-04-21

Applicant: Nokia Solutions and Networks Oy

Inventor： Nuan SONG ,  Rana AHMED SALEM ,  Tao YANG ,  Yan ZHAO ,  Hao LIU

IPC: H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0617 ,  H04B7/0634 ,  H04L5/0051

Abstract: Embodiments of the present disclosure relate to a beamforming solution for FDD MIMO communication. A first device receives a reference signal from a second device in a first channel, and determines a covariance matrix associated with the first channel. The first device determines a set of beamforming vectors from the covariance matrix based on the number of dominant angles of arrival associated with the reference signal and the number of beams associated with the set of beamforming vectors, and performs a transmission to the second device based on the set of beamforming vectors in a second channel. In this way, beamforming vectors can be calculated from the transformed channel covariance matrix with the angular spread and imperfect reciprocity considered.