US 11,743,244 B2
Signaling in dual connectivity mobile communication networks
Himke Van Der Velde, Zwolle (NL); Gert Jan Van Lieshout, Apeldoorn (NL); and Soenghun Kim, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 18, 2021, as Appl. No. 17/323,404.
Application 17/323,404 is a continuation of application No. 15/501,344, granted, now 11,038,859, previously published as PCT/KR2015/008071, filed on Jul. 31, 2015.
Claims priority of application No. 1413798 (GB), filed on Aug. 4, 2014.
Prior Publication US 2021/0281552 A1, Sep. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/04 (2023.01); H04L 9/40 (2022.01); H04W 76/15 (2018.01); H04W 36/00 (2009.01); H04W 12/041 (2021.01); H04W 12/043 (2021.01); H04L 41/0816 (2022.01); H04W 76/22 (2018.01); H04W 88/10 (2009.01); H04W 88/06 (2009.01); H04W 88/08 (2009.01)
CPC H04L 63/06 (2013.01) [H04L 41/0816 (2013.01); H04W 12/041 (2021.01); H04W 12/043 (2021.01); H04W 36/0055 (2013.01); H04W 36/0069 (2018.08); H04W 36/0079 (2018.08); H04W 76/15 (2018.02); H04W 76/22 (2018.02); H04W 88/06 (2013.01); H04W 88/08 (2013.01); H04W 88/10 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method performed by a master base station in a wireless communication system supporting dual connectivity, the method comprising:
transmitting, to a target secondary base station, an addition request message for secondary base station change, the addition request message including a current secondary cell group (SCG) configuration associated with a terminal;
receiving, from the target secondary base station, an acknowledge message as a response to the addition request message for the secondary base station change, wherein the acknowledge message includes a new SCG configuration associated with the terminal and information indicating that the terminal releases the current SCG configuration and applies the new SCG configuration;
transmitting, to the terminal, a radio resource control (RRC) reconfiguration message including the new SCG configuration associated with the terminal;
receiving, from the terminal, an RRC reconfiguration complete message as a response to the RRC reconfiguration message; and
transmitting, to the target secondary base station, a secondary base station reconfiguration complete message as a response to the RRC reconfiguration complete message.