Method and device for operating wireless-core converged control plane in wireless communication system

A method performed by a user equipment (UE) in a wireless communication system, the method comprising:

• generating a first control message comprising a control message delivery (CMD) layer header that is a base for a communication device of a base station to determine a destination of the first control message among a central unit (CU) of the base station and network functions (NFs);
• and
• transmitting the first control message to the communication device,
• wherein the CMD layer header is processed by a CMD layer of the communication device and the CMD layer is arranged under a radio resource control (RRC) laver.

A communication device of a base station in a wireless communication system, the communication device comprising:

• a transceiver configured to transmit and receive a signal;
• and
• a processor connected to the transceiver,
• wherein the processor is configured to:
• receive a first control message comprising a control message delivery (CMD) layer header from a user equipment (UE);
• determine a destination of the first control message among a central unit of the base station and network functions (NFs), based on the CMD layer header;
• and
• transmit a second control message related to the first control message to the destination,
• wherein the communication device comprises a CMD layer arranged under a radio resource control (RRC) layer and configured to process the CMD layer header.

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

• a transceiver configured to transmit and receive a signal;
• and
• a processor connected to the transceiver,
• wherein the processor is configured to:
• generate a first control message comprising a control message delivery (CMD) layer header that is a base for a communication device of a base station to determine a destination of the first control message among a central unit (CU) of the base station and network functions (NFs);
• and
• transmit the first control message to the communication device,
• wherein the CMD layer header is processed by a CMD layer of the communication device and the CMD layer is arranged under a radio resource control (RRC) layer.