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.