CPC H04W 80/08 (2013.01) [H04W 28/06 (2013.01); H04W 76/27 (2018.02); H04W 80/02 (2013.01)] | 18 Claims |
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.
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