US 12,328,781 B2
Master node, a secondary node, a user equipment and methods therein for handling of a secondary cell group (SCG)
Osman Nuri Can Yilmaz, Espoo (FI); Lian Araujo, Solna (SE); Patrik Rugeland, Stockholm (SE); and Oumer Teyeb, Solna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/430,780
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Feb. 13, 2019, PCT No. PCT/SE2019/050122
§ 371(c)(1), (2) Date Aug. 13, 2021,
PCT Pub. No. WO2020/167170, PCT Pub. Date Aug. 20, 2020.
Prior Publication US 2022/0141904 A1, May 5, 2022
Int. Cl. H04W 76/16 (2018.01); H04W 76/19 (2018.01); H04W 76/20 (2018.01); H04W 76/27 (2018.01)
CPC H04W 76/16 (2018.02) [H04W 76/19 (2018.02); H04W 76/20 (2018.02); H04W 76/27 (2018.02)] 7 Claims
OG exemplary drawing
 
1. A method performed in a Master Node (MN) for handling of a Secondary Cell Group (SCG) for a User Equipment (UE) operable in a dual connectivity mode with the MN and a Secondary Node (SN) operating in a wireless communication network, a Master Cell Group (MCG) associated with the MN and the SCG associated with the SN, and the method comprising:
transmitting, to the SN, an SN addition request to initiate dual connectivity, the initiation of dual connectivity occurring prior to a connection being established with the SN;
receiving, from the SN, the SCG;
deciding to perform a first operation relating to a suspension or a resumption of the SCG independently from a second operation relating to a suspension or a resumption of the MCG;
transmitting, to the UE, an indication indicating the first operation relating to the suspension or the resumption of the SCG and indicating the second operation relating to the suspension or the resumption of the MCG;
transmitting, to the SN, an indication indicating the first operation relating to the suspension or the resumption of the SCG; and
the indication transmitted to the UE indicating, to the UE, to, during the initiation of the dual connectivity, set up the SCG and to keep the SCG suspended.