公开(公告)号：US20230126659A1

公开(公告)日：2023-04-27

申请号：US17507217

申请日：2021-10-21

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Dmitry Petrov ,  Lars Dalsgaard

IPC: H04W72/12 ,  H04W72/04 ,  H04W56/00

Abstract: Methods, apparatuses, and computer program products for uplink (UL) timing advance (TA) adjustment at beam switch are provided. A method may include, when it is determined that beam change or transmission configuration indication (TCI) state switch should occur for beam(s) originating from non-collocated source nodes, enabling assistance information relating to time difference for a UE. The method may include preparing timing adjustment prediction model(s) configured to predict a timing advance adjustment (TAA) or actual TA that should be applied by the UE at the beam change, using the at least one prepared timing adjustment prediction model to determine the TAA or the actual TA that should be applied by the UE at the beam change. The method may include signaling or assigning the TAA or the actual TA to the UE, or using the TAA to adjust for a UE autonomously adjusted TA value at the beam change.

公开(公告)号：US20240349348A1

公开(公告)日：2024-10-17

申请号：US18294399

申请日：2021-08-06

Applicant: Nokia Technologies Oy

Inventor： Lars DALSGAARD ,  Dmitry Petrov ,  Alessio MARCONE ,  Mohamad SAYED HASSAN

IPC: H04W74/0833 ,  H04B7/06

CPC classification number: H04W74/0833 ,  H04B7/0695

Abstract: Disclosed is a method comprising receiving, from a first transmission and reception point of a wireless communication network, an indication for transmitting a random-access preamble to a second transmission and reception point of the wireless communication network after a beam switch from a source beam of the first transmission and reception point to a target beam of the second transmission and reception point; and transmitting the random-access preamble to the second transmission and reception point after the beam switch.