A signalling method is disclosed for use in an advanced wireless communication network that supports FDD-TDD carrier aggregation (CA). The signalling method comprises configuring the UE (by establishing radio resource control (RRC) connection with the network through the first access node) for data transmission between the UE and the network through the first access node on the first duplex mode carrier as a primary component carrier (PCell), configuring the UE (via dedicated RRC signalling on the PCell) for data transmission between the UE and the network through the second access node on the second duplex mode carrier as a secondary component carrier (SCell), and performing scheduling for data transmission on the aggregated SCell using either self-scheduling or cross-carrier scheduling.