A method for real-time data transmission in a communication network for transmitting useful data from a transmitter to a plurality of receivers, wherein the receivers are synchronized in terms of time via a synchronization method, at least one time for transmitting a respective useful data message to the receivers is stipulated during real-time data transmission, each of the receivers is assigned its own receiver useful data area within the useful data message, which area is assigned to the receiver, and the transmitter transmitting a useful data message. In accordance with the invention, a first of the receivers receiving this useful data message, stores the useful data contained in the receiver useful data area assigned to it for further processing, and forwards the useful data message to a second of the receivers at the transmission time.