Method and apparatus for transmitting control signal using service based interface in a wireless communication system

A user equipment in a wireless communication system, the user equipment comprising:

• at least one transceiver;
• and
• a controller coupled with the at least one transceiver,
• wherein the controller is configured to:
• generate a first non-access stratum (NAS) message including address information of the user equipment, address information of a network function (NF) entity, and name information of a service requested by the user equipment from the NF entity,
• transmit the first NAS message to the NF entity via a base station, and
• receive a second NAS message in response to the first NAS message, from the NF entity via the base station,
• wherein the address information of the user equipment and the address information of the NF entity are configured by a radio resource control (RRC) message received from the base station.

A method performed by a network function (NF) entity in a wireless communication system, the method comprising:

• receiving from a user equipment via base station, a first non-access stratum (NAS) message including address information of the user equipment, address information of the NF entity, and name information of a service requested by the user equipment from the NF entity;
• generating a second NAS message in response to the first NAS message;
• and
• transmitting the second NAS message to the user equipment via the base station,
• wherein the address information of the user equipment and the address information of the NF entity are configured by a radio resource control (RRC) message received at the user equipment from the base station.

A network function (NF) entity in a wireless communication system, the NF entity comprising:

• at least one transceiver;
• and
• a controller coupled with the at least one transceiver,
• wherein the controller is configured to:
• receive from a user equipment via base station, a first non-access stratum (NAS) message including address information of the user equipment, address information of the NF entity, and name information of a service requested by the user equipment from the NF entity,
• generate a second NAS message in response to the first NAS message, and
• transmit the second NAS message to the user equipment via the base station,
• wherein the address information of the user equipment and the address information of the NF entity are configured by a radio resource control (RRC) message received at the user equipment from the base station.