Method and apparatus for configuring PDCP device and SDAP device in next-generation mobile communication system

A terminal in a wireless communication system, the terminal comprising:

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to:
• receive, from a base station via the transceiver, a radio resource control (RRC) message configuring a data radio bearer (DRB), the RRC message configuring the DRB including service data association protocol (SDAP) configuration information for the DRB and a DRB identity for the DRB, and packet data convergence protocol (PDCP) configuration information for the DRB, and
• configure an SDAP entity associated with at least one PDCP entity based on the received RRC message configuring the DRB,
• wherein the SDAP configuration information for the DRB included in the RRC message configuring the DRB includes an indicator indicating whether an SDAP header is present or absent for the DRB.

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

• generating a radio resource control (RRC) message configuring a data radio bearer (DRB), the RRC message configuring the DRB including service data association protocol (SDAP) configuration information for the DRB, a DRB identity for the DRB, and packet data convergence protocol (PDCP) configuration information for the DRB;
• and
• transmitting, to a terminal, the RRC message configuring the DRB,
• wherein the SDAP configuration information for the DRB included in the RRC message configuring the DRB includes an indicator indicating whether an SDAP header is present or absent for the DRB.

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

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to:
• generate a radio resource control (RRC) message configuring a data radio bearer (DRB), the RRC message configuring the DRB including service data association protocol (SDAP) configuration information for the DRB, a DRB identity for the DRB, and packet data convergence protocol (PDCP) configuration information for the DRB, and
• transmit, to a terminal via the transceiver, the RRC message configuring the DRB,
• wherein the SDAP configuration information for the DRB included in the RRC message configuring the DRB includes an indicator indicating whether an SDAP header is present or absent for the DRB.