Method and apparatus for carrier aggregation in wireless communication system

PURPOSE: A method and apparatus for collecting a carrier in a wireless communication system are provided to efficiently process data regardless of an intra-band or an inter-band when data is transmitted by using carrier collection. CONSTITUTION: A base band part of UE(User Equipment) comprises information bit parts(100,110), coding and modulating parts(103,113), and conversion precoder parts(105,115). The base band part comprises resource element mappings(107,117), an IFFT(Inverse Fourier Transform) part(220), a CP addition part(300), and switches(400,403) The base band part comprises mixers(500,510), low-pass filters(600,610), RF chains(700,710), duplexers(800,810), a diplexer(900), and an antenna(10), etc. A base band structure of the UE supporting an intra-band CA(Carrier Aggregation) supports an inter-band CA.