The present invention is directed to a method for notifying the terminal selected CN operator in a network having a shared radio access network (RAN) (NS) system shared by a plurality of CN operators to RAN. After the initial direct transfer (IDT) transmitting the request message for requesting a signaling connection, the terminal acquires a CN operator ID selected among CN operator ID list broadcasted from a cell, set the radio resource control (RRC) connection, wherein by including a CN operator identifier obtained in the IDT message and transmits a RAN. RAN will store the CN operator identifier included in a context for the terminal, the IDT message. Since RAN selects a CN operator for the terminal using the CN operator ID. Network Sharing, Initial Direct Transfer, SRNC relocation, chosen PLMN