Method and apparatus for establishing bearer in mobile communication systems

A method of transmitting and receiving a signal from the Packet Data Network Gateway (PDN GateWay, PGW) in a mobile communication system according to an embodiment of the present disclosure includes the steps of: receiving a proxy binding update to the terminal from the enhanced Packet Data Gateway (Evolved Packet Data Gateway, ePDG); Transmitting a message for requesting subscription information of the terminal to the subscriber information server; Receiving a QoS (Quality of Service) information of the UE from the subscription information server; And transmitting the QoS request to the billing information and the policy server, based on the received QoS information. In a wireless communication system using the PMIP, according to the present invention, it is possible to produce a connection PDN according to the default QoS.