US 12,238,593 B2
Method and apparatus for secondary base station change in mobile wireless communication system
Soenghun Kim, Gyeonggi-do (KR)
Assigned to BLACKPIN INC., Seoul (KR)
Filed by BLACKPIN INC., Seoul (KR)
Filed on Oct. 19, 2023, as Appl. No. 18/381,641.
Application 18/381,641 is a continuation of application No. 17/592,517, filed on Feb. 4, 2022, granted, now 11,832,135.
Claims priority of application No. 10-2021-0103260 (KR), filed on Aug. 5, 2021.
Prior Publication US 2024/0049064 A1, Feb. 8, 2024
Int. Cl. H04W 36/00 (2009.01); H04W 36/08 (2009.01)
CPC H04W 36/0058 (2018.08) [H04W 36/00698 (2023.05); H04W 36/08 (2013.01); H04W 36/00837 (2018.08)] 5 Claims
OG exemplary drawing
 
1. A method performed by a terminal, the method comprising:
transmitting to a Master Node (MN) a first Uplink (UL) message, wherein the first UL message comprises terminal capability information on a Primary Secondary Cell Group Cell (PSCell) conditional reconfiguration;
receiving from the MN a first Downlink (DL) message, wherein the first DL message comprises a first identifier and a Conditional Reconfiguration Information Element (IE), and wherein the Conditional Reconfiguration IE comprises information relating to execution condition and a second DL message, and wherein the second DL message comprises a second identifier, a configuration of a first cell, a configuration of a radio bearer, and security key information;
transmitting to the MN a second UL message in response to reception of the first DL message, wherein the second UL message comprises the first identifier;
performing conditional reconfiguration evaluation based on a measurement configuration associated with a Secondary Cell Group (SCG) in case that a first information indicating that a measurement identifier refers to the measurement configuration associated with the SCG is comprised in the Conditional Reconfiguration IE;
determining the first cell to be a triggered cell in case that execution condition is fulfilled;
performing conditional reconfiguration execution based on the configuration of the first cell, the configuration of the radio bearer, and the security key information; and
transmitting to the MN a third UL message, wherein the third UL message comprises an identifier corresponding to the triggered cell and a fourth UL message, wherein the fourth UL message comprises the second identifier of the second DL message.