公开(公告)号：US20250056342A1

公开(公告)日：2025-02-13

申请号：US18798742

申请日：2024-08-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： You Sun HWANG ,  Sung Min OH

IPC: H04W36/00 ,  H04W36/30 ,  H04W72/21

Abstract: A method of a terminal for a RACH-less handover may comprise: receiving, from a source cell, information on a UL grant for UL transmission in a target cell, the information on the UL grant including a start time and an expiration time of the UL grant and/or a maximum number of transmissions according to the UL grant; performing transmission of an RRC reconfiguration complete message using resources indicated by the UL grant from the start time, until the expiration time or until the transmission is completed up to the maximum number of transmissions from the start time; and in response to the transmission of the RRC reconfiguration complete message not being successful until the expiration time or until the transmission is completed up to the maximum number of transmissions, performing a fallback procedure for the RACH-less handover.

公开(公告)号：US20240163759A1

公开(公告)日：2024-05-16

申请号：US18507344

申请日：2023-11-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyung Deug BAE ,  Sook Yang KANG ,  Jae Wook SHIN ,  Sung Min OH ,  Soon Yong LIM ,  Sung Gu CHOI ,  You Sun HWANG

IPC: H04W36/08 ,  H04W36/00

CPC classification number: H04W36/087 ,  H04W36/0072 ,  H04W36/0009

Abstract: A method of an integrated access and backhaul (IAB) node may include: receiving, from a target base station, one or more user equipment (UE) context setup request messages including terminal radio resource reconfiguration information; sharing context information including the terminal radio resource reconfiguration information with a source IAB-distributed unit 1 (IAB-DU1); configuring terminal reconfiguration information using the shared context information; and transmitting one or more UE context setup response messages including the terminal reconfiguration information to the target base station in response to the one or more UE context setup request messages.