With continued reference to FIG. 1, a number of serving cells 118, 120 are each associated with a corresponding CC 220. The coverage for each serving cell 118, 120 may different due to the CCs 220 on different frequency bands experiencing different pathloss from each other. A Primary CC (PCC) 220P (i.e., DL PCC and UL PCC) serves a Primary serving cell (PSC) 118 configured to handle functionalities of Radio Resource Control (RRC) connection between an eNB 102 and a UE 300, as well as transfer of data 208 (FIG. 2B) between the eNB 102 and the UE 300. The UE 300 may also receive non-access stratum (NAS) information, such as security parameters, on the DLL PCC 220P. The UE 300 may operate in idle mode and listen for system information on the DL PCC 220P and send a physical uplink control channel (PUCCH) to the eNB 102 on the UL PCC 220P. FIG. 1 also shows multiple Secondary CCs (SCCs) 220S, 220Sa-Sn each serving a corresponding Secondary serving cell (SSC) 120, 120a-n for handling the transfer of data 208 (FIG. 2B) between the eNB 102 and the UE 300. The SCCs 220S may be added and removed depending upon current bandwidth needs of the network 100, while the PCC 220P may change at handover.