The controller 1410 is capable of controls the operations of the ENB, related to the measurement report and the radio resource control, according to the second embodiment of the present disclosure, i.e., operations of the ENB described above referring to FIGS. 11 and 12.
Third Embodiment
The embodiment relates to an apparatus and method of activating secondary carriers with PUCCH in UE aggregated with multi-subcarriers.
FIG. 15 is a diagram that describes improved carrier aggregation in UE according to a third embodiment of the present disclosure.
Referring to FIG. 15, one ENB broadcasts/receives multi-carriers over a number of frequency bands. For example, when an ENB 1505 broadcasts uplink carriers for four cells, conventional art enables one UE device to transmit/receive data by using one of a number of carriers. However, UE 1530 capable of performing carrier aggregation is capable of simultaneously transmitting/receiving data using a number of carriers. In that case, ENB 1505 allocates more carriers to UE 1530 capable of performing carrier aggregation according to the conditions, so that the UE 1530 can increase the data transmission rate.
