A wireless data transmission system and method is disclosed. A given frame comprising a distinct message is transmitted to a designated receiver. Responsive to a failure of the designated receiver to detect the distinct message, one or more first copies of the distinct message are added to at least one first subsequent frame of one or more subsequent frames, subsequent to the given frame, designating the designated receiver. Moreover, one or more second copies of the distinct message are added to at least one second subsequent frame of the subsequent frames, wherein a first number of the first copies is different than a second number of the second copies. The first copies and the second copies are added to meet a Quality of Service (QoS) requirement for a communication link between the wireless data transmission system and the designated receiver and a delay requirement for the communication link.