A central communication unit of a motor vehicle and to a method for controlling the communication between a plurality of applications by way of such a central communication unit are provided. The central communication unit has a communication organization module, which can actively distribute the available external radio connection capacities between the central communication unit and at least one transmitting/receiving device to individual active data connections of the applications in accordance with predetermined criteria. In the central communication unit, the available external radio connection capacities are distributed among the individual data connections of the individual applications in a specific, controlled manner. The criteria for this are the demand for connection capacity and/or the priorities of the different data connections.