A base station may be associated with a primary cell to communicate with a user equipment (UE) in a licensed frequency band and at least one secondary cell to communicate with the UE in an unlicensed frequency band. The base station may receive a traffic flow associated with an application executing at the UE and assign the traffic flow to either the primary cell or the at least one secondary cell based on a classification associated with the traffic flow. For example, the traffic flow may be assigned to the primary cell based on the classification indicating that the application is executing at the UE in a foreground state or to the at least one secondary cell based on the classification indicating that the application is executing at the UE in a background state.