Method for setting configuration of non-IP data delivery (NDID) in wireless communication system and device for same

A Service Capability Exposure Function (SCEF) for setting a Non-IP Data Delivery (NIDD) configuration in a wireless communication system, the SCEF comprising:

• a transmitter configured to transmit a signal;
• a receiver configured to receive a signal;
• and
• a processor configured to control the transmitter and the receiver,
• wherein the processor is further configured to:
• receive, from a network node, a first SCEF connection setup request for a non-IP data transmission of a user equipment (UE), wherein the first SCEF connection setup request comprises an external identifier of the UE and a Services Capability Server (SCS)/Application Server (AS) identifier (ID) of an SCS/AS which provides a service for the UE;
• determine whether the NIDD configuration for the SCS/AS is established;
• when the NIDD configuration is not established:
• transmit a second SCEF connection setup request for establishing the NIDD configuration to the SCS/AS, wherein the second SCEF connection setup request comprises the external identifier of the UE;
• and
• set the NIDD configuration for the SCS/AS and the UE.