Communication method using a carrier aggregation and apparatus therefore

PURPOSE: A communication method using a carrier aggregation and an apparatus thereof are provided to efficiently transmit an uplink signal by using plural component carriers. CONSTITUTION: A UE(User Equipment) receives a parameter for determining UL(UpLink) physical channel allocation from a base station(S110). The UE performs the determination procedure of the UL physical channel allocation(S1120). If a physical channel is transmitted through a non-available portion of a UL CC(Component Carrier), the terminal does not transfer the UL physical channel(S1130). Or the terminal transfers the UL physical channel through a different manner.