US 12,231,965 B2
Method and device for changing secondary base station in wireless mobile communication system
Soenghun Kim, Hanam-si (KR)
Assigned to Blackpin Inc., Seoul (KR); and Soenghun Kim, Hanam-si (KR)
Filed by BLACKPIN Inc., Seoul (KR); and Soenghun Kim, Hanam-si (KR)
Filed on Jan. 5, 2024, as Appl. No. 18/404,902.
Application 18/404,902 is a continuation of application No. 18/238,542, filed on Aug. 28, 2023, granted, now 11,910,246.
Application 18/238,542 is a continuation of application No. PCT/KR2022/011128, filed on Jul. 28, 2022.
Claims priority of application No. 10-2021-0103273 (KR), filed on Aug. 5, 2021.
Prior Publication US 2024/0155438 A1, May 9, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/00 (2009.01); H04W 36/36 (2009.01)
CPC H04W 36/0016 (2013.01) [H04W 36/00835 (2018.08); H04W 36/362 (2023.05)] 20 Claims
OG exemplary drawing
 
1. A method by a master node (MN), the method comprising:
transmitting to a first Secondary Node (SN) a first base station control message, wherein the first base station control message includes a first information indicating that a first reconfiguration procedure is requested;
receiving from the first SN a second base station control message, wherein the second base station control message includes a second information in response that the first information was included in the first base station control message, wherein the second information includes a cell global identifier of a specific cell for the first reconfiguration procedure;
transmitting to a terminal a first Long Term Evolution (LTE) downlink (DL) message, wherein the first LTE DL message includes a first identifier and a one or more CondReconfigToAddMod, wherein each of the one or more CondReconfigToAddMod includes execution condition and a second identifier and a New Radio (NR) DL message;
receiving from the terminal a first LTE uplink (UL) message, wherein the first LTE UL message includes the first identifier, wherein the first identifier corresponds to the first LTE DL message;
receiving from the terminal a second LTE UL message, wherein the second LTE UL message includes a second identifier, the second identifier corresponds to the NR DL message;
transmitting to a second SN a third base station control message, wherein the third base station control message includes tunnel information for data forwarding; and
transmitting to the first SN a fourth base station control message, wherein the fourth base station message includes a NR UL message received from the terminal.