公开(公告)号：US20240178902A1

公开(公告)日：2024-05-30

申请号：US18500475

申请日：2023-11-02

Applicant: Nokia Solutions and Networks Oy

Inventor： Andrea BEDIN ,  Paolo BARACCA ,  Karthik UPADHYA ,  Mikko Aleksi UUSITALO ,  Martti Johannes MOISIO

IPC: H04B7/06 ,  H04B7/185

CPC classification number: H04B7/06958 ,  H04B7/1855

Abstract: According to an aspect, there is provided an apparatus for performing the following. The apparatus obtains predicted Doppler spectrum information for a propagation channel between a first terminal device and one of an access node or a second terminal device calculated using a radio-aware digital twin. The predicted Doppler spectrum information includes information on one or more Doppler frequencies of a predicted Doppler spectrum resulting from reflections from one or more terminal devices capable of movement under control of the digital twin. The apparatus causes performing of measurements of one or more reference signals by a device associated with the propagation channel to a form a channel estimate. The apparatus calculates a measured Doppler spectrum based on the channel estimate and filters out the one or more Doppler frequencies from it. The apparatus adjusts a beam refinement interval of the device based on the filtered measured Doppler spectrum.