US 12,004,263 B2
Methods and apparatuses for transmitting and receiving data in wireless communication system
Donggun Kim, Suwon-si (KR); Soenghun Kim, Suwon-si (KR); and Suyoung Park, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jul. 4, 2022, as Appl. No. 17/810,623.
Application 17/810,623 is a continuation of application No. 16/789,323, filed on Feb. 12, 2020, granted, now 11,382,169.
Claims priority of application No. 10-2019-0016360 (KR), filed on Feb. 12, 2019.
Prior Publication US 2023/0013201 A1, Jan. 19, 2023
Int. Cl. H04W 56/00 (2009.01); H04W 28/06 (2009.01); H04W 76/27 (2018.01); H04W 80/02 (2009.01); H04W 80/08 (2009.01)
CPC H04W 80/08 (2013.01) [H04W 28/06 (2013.01); H04W 76/27 (2018.02); H04W 80/02 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) in a wireless communication for performing handover between different radio access technologies, the method comprising:
receiving a radio resource control (RRC) message;
identifying whether a full configuration indicator is included in the RRC message;
in case that the full configuration indicator is not included in the RRC message, maintaining configuration information of a packet data convergence protocol (PDCP) layer or a service data adaptation protocol (SDAP) layer configured in a source base station (BS); and
based on the identification that the full configuration indicator is not included in the RRC message, using, for a target BS, the maintained configuration information of the PDCP layer or the SDAP layer configured in the source BS.