US 12,349,015 B2
Self-optimization method and device
Xiaoning Ma, Beijing (CN); Lixiang Xu, Beijing (CN); Hong Wang, Beijing (CN); and Weiwei Wang, Beijing (CN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 17/759,280
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
PCT Filed Jan. 20, 2021, PCT No. PCT/KR2021/000789
§ 371(c)(1), (2) Date Jul. 21, 2022,
PCT Pub. No. WO2021/150014, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 202010076371.3 (CN), filed on Jan. 23, 2020; and application No. 202011133694.3 (CN), filed on Oct. 21, 2020.
Prior Publication US 2023/0109338 A1, Apr. 6, 2023
Int. Cl. H04W 36/00 (2009.01); H04W 24/02 (2009.01)
CPC H04W 36/0079 (2018.08) [H04W 24/02 (2013.01); H04W 36/0069 (2018.08)] 10 Claims
OG exemplary drawing
 
1. A method of a master node (MN) in a wireless communication system, the method comprising:
receiving, from a first secondary node (SN), a first message to trigger a change of the first SN, the first message including a list of information on primary secondary cell (PSCell) for a user equipment (UE);
transmitting, to a second SN, a second message to request an addition of the second SN based on the first message;
transmitting, to the second SN, a third message to request a release of the second SN; and
receiving, from the second SN, an acknowledge message for the third message, the acknowledge message including list of information on PSCell and a duration of time the UE stayed in the PSCell.