US 12,328,633 B2
Method and device for handling link failure in wireless communication system
Seungbo Yoo, Suwon-si (KR); Hyungtaig Lim, Suwon-si (KR); and Hwajin Cha, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jul. 14, 2022, as Appl. No. 17/864,739.
Application 17/864,739 is a continuation of application No. PCT/KR2021/000409, filed on Jan. 12, 2021.
Claims priority of application No. 10-2020-0005058 (KR), filed on Jan. 14, 2020.
Prior Publication US 2022/0353776 A1, Nov. 3, 2022
Int. Cl. H04W 36/30 (2009.01); H04W 36/00 (2009.01)
CPC H04W 36/305 (2018.08) [H04W 36/0058 (2018.08); H04W 36/0022 (2013.01); H04W 36/00698 (2023.05)] 8 Claims
OG exemplary drawing
 
1. A method performed by a first base station in which a Master Cell Group-(MCG) is configured in a wireless communication system, the method comprising:
receiving, from a user equipment (UE), secondary cell group (SCG) failure information associated with a SCG;
transmitting, to a second base station in which athe SCG is configured, a first secondary node modification request message which comprises the SCG failure information including a SCG failure cause;
receiving, from the second base station, a secondary node modification acknowledge message;
transmitting, to the UE, a first radio resource control (RRC) connection reconfiguration message; including configuration information for a measurement of the UE for SCG resume,
receiving, from the UE, a measurement report based on the configuration information for the measurement;
transmitting, to the second base station, a second secondary node modification request message including information on a candidate cell list and a measurement result based on the measurement report;
receiving, from the second base station, a message including information on a target cell associated with the SCG resume with the UE; and
transmitting, to the UE, a second RRC connection reconfiguration message including information on a removal of the measurement.