METHOD AND APPARATUS FOR DATA TRANSMISSION OF TERMINAL IN WIRELESS COMMUNICATION SYSTEM
The present disclosure relates to a communication system and technique that may be applied to intelligent services based on a 5G communication technology and an IoT-related technology. The present disclosure provides a method for data transmission of a terminal in a wireless communication system that includes inputting a packet data convergence protocol packet data unit (PDCP PDU) output from a PDCP entity to a first radio link control (RLC) entity and a second RLC entity. The method also includes inputting a first radio link control packet data unit (RLC PDU) output from the first RLC entity and a second RLC PDU output from the second RLC entity to a medium access control (MAC) entity and transmitting a medium access control packet data unit (MAC PDU) output from the MAC entity through a first physical layer (PHY) entity and a second physical layer entity.
1 . A method for data transmission of a terminal in a wireless communication system, the method comprising:
generating, by a packet data convergence protocol (PDCP) entity, a packet data convergence protocol packet data unit (PDCP PDU) and a duplicated PDCP PDU which is the same as the PDCP PDU;
delivering, from the PDCP entity, the PDCP PDU to a first radio link control (RLC) entity, and the duplicated PDCP PDU to a second RLC entity;
delivering a first radio link control packet data unit (RLC PDU) corresponding to the PDCP PDU from the first RLC entity to a medium access control (MAC) entity, and a second RLC PDU corresponding to the duplicated PDCP PDU from the second RLC entity to the MAC entity; and
transmitting, to a base station, a first packet on a first carrier and a second packet on a second carrier, the first packet being generated based on the first RLC PDU and the second packet being generated based on the second RLC PDU at the MAC entity,
wherein a sequence number of the PDCP PDU is the same as a sequence number of the duplicated PDCP PDU.