METHODS AND APPARATUSES FOR RESUMING A SUSPENDED RRC CONNECTION

According to some embodiments, a method for use in a user equipment (UE) of resuming a radio bearer in a wireless communication network comprises: establishing a radio resource control (RRC) connection of a first radio access technology with a first network node; receiving a connection suspend message from the first network node; storing a configuration of a radio bearer associated with the RRC connection; suspending the radio bearer associated with the RRC connection; receiving a connection resume message; determining whether the connection resume message includes configuration information for a packet data convergence protocol (PDCP) of a second radio access technology for the suspended radio bearer; upon determining the connection resume message includes configuration information for the PDCP of the second radio access technology, configuring the suspended radio bearer with the configuration information; and resuming the suspended radio bearer.