Radio communication system for an industrial automation system, having - at least one first communication device, operated as a radio base station, that comprises at least one radio transceiver unit, - multiple second communication devices, operated as radio subscriber stations, that are each wirelessly connectable to the first communication device and comprise at least one radio transceiver unit (221, 231, 241), - wherein the first communication device and the second communication devices are designed and configured to be assigned to a communication device group, - wherein the first communication device and the second communication devices are wirelessly connectable to one another only within the same communication device group, - wherein the first communication device and the second communication devices are designed and configured to interchange data frames (10, 20) with one another that are transmitted by means of radio resources reserved for their associated communication device group, - wherein the first communication device and the second communication devices are designed and configured to determine distances between the first communication device and the respective second communication device within their associated communication device group on the basis of signal strength measured values and/or position data, - wherein the first communication device is designed and configured to allocate radio resources for a radio communication with the respective second communication device within the associated communication device group on the basis of the determined distances, the radio resources comprising carrier frequencies, bandwidth, transmission time windows and/or transmission power, - wherein the first communication device is designed and configured to prescribe or to control a reduction in transmission power, increased quality-of-service requirements and/or changed coding and/or modulation schemes for a radio communication with the respective second communication device if the distance decreases, characterized in that - the first communication device is arranged or movable on a vehicle, - there is provision for multiple communication devices operable as a radio base station, - the communication devices operable as a radio base station are designed and configured so as, if the first communication device fails and further communication devices operable as a radio base station are present within their radio range, to make a selection of the first communication device operated as a radio base station. - at least one first communication device, operated as a radio base station, that comprises at least one radio transceiver unit, - multiple second communication devices, operated as radio subscriber stations, that are each wirelessly connectable to the first communication device and comprise at least one radio transceiver unit (221, 231, 241), - wherein the first communication device and the second communication devices are designed and configured to be assigned to a communication device group, - wherein the first communication device and the second communication devices are wirelessly connectable to one another only within the same communication device group, - wherein the first communication device and the second communication devices are designed and configured to interchange data frames (10, 20) with one another that are transmitted by means of radio resources reserved for their associated communication device group, - wherein the first communication device and the second communication devices are designed and configured to determine distances between the first communication device and the respective second communication device within their associated communication device group on the basis of signal strength measured values and/or position data, - wherein the first communication device is designed and configured to allocate radio resources for a radio communication with the respective second communication device within the associated communication device group on the basis of the determined distances, the radio resources comprising carrier frequencies, bandwidth, transmission time windows and/or transmission power, - wherein the first communication device is designed and configured to prescribe or to control a reduction in transmission power, increased quality-of-service requirements and/or changed coding and/or modulation schemes for a radio communication with the respective second communication device if the distance decreases, - the first communication device is arranged or movable on a vehicle, - there is provision for multiple communication devices operable as a radio base station, - the communication devices operable as a radio base station are designed and configured so as, if the first communication device fails and further communication devices operable as a radio base station are present within their radio range, to make a selection of the first communication device operated as a radio base station.