Structure of MAC sub-header for supporting next generation mobile communication system and method and apparatus using the same

A terminal for delivering data in a wireless communication system, the terminal comprising:

• a transceiver;
• and
• at least one processor configured to:
• obtain a medium access control (MAC) service data unit (SDU) from an upper layer,
• generate a MAC protocol data unit (PDU) including the MAC SDU and a MAC control element (CE), wherein a first MAC subheader for the MAC SDU is placed immediately in front of the MAC SDU and a second MAC subheader for the MAC CE is placed immediately in front of the MAC CE, and
• deliver the MAC PDU to a lower layer,
• wherein the MAC CE with the second MAC subheader is placed after at least one MAC SDU in the MAC PDU.

A method for receiving data by a base station in a wireless communication system, the method comprising:

• receiving a medium access control (MAC) protocol data unit (PDU) from a lower layer;
• and
• identifying a MAC service data unit (SDU) and a MAC control element (CE) from the MAC PDU, the MAC PDU including a first MAC subheader for the MAC SDU which is placed immediately in front of the MAC SDU and a second MAC subheader for the MAC CE which is placed immediately in front of the MAC CE,
• wherein the MAC CE with the second MAC subheader is placed after at least one MAC SDU in the MAC PDU.

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

• a transceiver;
• and
• at least one processor configured to:
• receive a medium access control (MAC) protocol data unit (PDU) from a lower layer, and
• identify a MAC service data unit (SDU) and a MAC control element (CE) from the MAC PDU, the MAC PDU including a first MAC subheader for the MAC SDU which is placed immediately in front of the MAC SDU and a second MAC subheader for the MAC CE which is placed immediately in front of the MAC CE,
• wherein the MAC CE with the second MAC subheader is placed after at least one MAC SDU in the MAC PDU.