Method and apparatus for transmitting and receiving duplicate data in a multicarrier wireless communication system

A method for receiving duplication data in a receiver which supports carrier aggregation performing communication using N (where n≧2) component carriers, the method comprising:

• receiving N duplication data on the N carrier components from a transmitter through each of N Hybrid Automatic Repeat and reQuest (HARQ) entities;
• combining the N duplication data and decoding the combined N duplication data;
• and
• transmitting HARQ feedback based on the decoded result through one or more of the N HARQ entities.

A user equipment device which supports carrier aggregation performing communication using N (where n≧2) component carriers and transmits duplication data, comprising:

• a Radio Link Control (RLC) layer module for generating transmission data as RLC Protocol Data Units (PDUs) and transmitting the RLC PDUs to a Media Access Control (MAC) layer;
• a MAC layer module including a multiplexing entity for generating a MAC PDU by multiplexing the RLC PDUs transmitted by the RLC layer module, a duplication entity for receiving the MAC PDU generated from the multiplexing entity and delicately generating N same MAC PDUs, and N Hybrid Automatic Repeat and reQuest (HARQ) entities corresponding to the N component carriers;
• and
• a physical layer module for mapping transport channels received from the N HARQ entities to uplink physical channels, transmitting the mapped channels to a base station, and receiving downlink control channels from the base station,
• wherein, if control information about duplication data transmission is received from the base station, the MAC layer module generates N duplication data using the RLC PDUs through the multiplexing entity and the duplication entity and transfers the N duplication data to the physical layer module through the N HARQ entities, and
• the physical layer module maps the transport channels received from the N HARQ entity to uplink physical channels and simultaneously transmits the mapped channels to the base station.

A user equipment device which supports carrier aggregation performing communication using N (where n≧2) component carriers and receives duplication data, comprising:

• a Media Access Control (MAC) layer module including N Hybrid Automatic Repeat and reQuest (HARQ) entities corresponding to the N component carriers, a duplication entity for combining and decoding MAC Protocol Data Units (PDUs) transferred from the N HARQ entities, and a demultiplexing entity for demultiplexing the MAC PDUs transferred from the duplication entity;
• and
• a physical layer module for transmitting downlink physical channels received on the N component carriers to the N HARQ entities through transport channels and receiving downlink control channels from a base station,
• wherein, if control information about duplication data reception is received from the base station, the MAC layer module transfers N duplication data on the N component carriers to the duplication entity through the N HARQ entities, combines and decodes the N duplication data through the duplication entity, and transmits HARQ feedback based on the decoded result to the base station through one or more of the N HARQ entities.