Method for controlling radio access resources in a communication network at least of the fifth, 5G, generation having a plurality of subnetworks (305, 305-1, 305-2) in the form of network slices which are logically separated from one another and are each assigned a predefined quality of service class according to at least one quality of service agreement for communication services, having a central quality of service manager which manages the quality of service classes of the subnetworks and provides the quality of service for communication connections from mobile terminals to the subnetworks using the physical resources, also having a radio access network having a plurality of radio access entities for providing radio access for mobile terminals to the subnetworks, wherein each radio access entity has a resource manager which is controlled by the central quality of service manager and, as a scheduler, manages and provides the radio access resources for radio access to at least one of the subnetworks; the method comprising the steps of: transmitting a control parameter to a resource manager of a first radio access entity by means of the central quality of service manager, wherein the control parameter indicates the quality of service class of a first subnetwork as well as the radio access resources which are required in the first radio access entity for a communication connection for complying with the quality of service class of the first subnetwork, wherein the radio access resources define one or more of the following radio access resources: bandwidth, frequency spectrum, time resources, number and/or time of transmission frames, number and/or time of time slots, transmission power, data rate, bit error rate, block error rate and/or latency; transmitting the availability of the required radio access resources in a resource message from the resource manager of the first radio access entity to the central quality of service manager on the basis of the transmitted control parameter, if the resource message indicates the availability of the radio access resource, routing the communication connection from the mobile terminal via the radio access network to the first subnetwork via the first radio access entity; if the resource message indicates that sufficient resources for complying with the required quality of service class for the first subnetwork are not available, transferring the communication connection to a second radio access entity by means of the central quality of service manager and/or the resource manager of the first radio access entity. transmitting a control parameter to a resource manager of a first radio access entity by means of the central quality of service manager, wherein the control parameter indicates the quality of service class of a first subnetwork as well as the radio access resources which are required in the first radio access entity for a communication connection for complying with the quality of service class of the first subnetwork, wherein the radio access resources define one or more of the following radio access resources: bandwidth, frequency spectrum, time resources, number and/or time of transmission frames, number and/or time of time slots, transmission power, data rate, bit error rate, block error rate and/or latency; transmitting the availability of the required radio access resources in a resource message from the resource manager of the first radio access entity to the central quality of service manager on the basis of the transmitted control parameter, if the resource message indicates the availability of the radio access resource, routing the communication connection from the mobile terminal via the radio access network to the first subnetwork via the first radio access entity; if the resource message indicates that sufficient resources for complying with the required quality of service class for the first subnetwork are not available, transferring the communication connection to a second radio access entity by means of the central quality of service manager and/or the resource manager of the first radio access entity.