It is provided a method comprising monitoring if a reservation request is received from a controller, wherein the reservation request requests to reserve resources for a data session having a first quality of service; translating the reservation request into a request for providing a data session of a wireless network having a requested quality of service corresponding to the first quality of service if the reservation request is received; forwarding the request for providing the data session to the wireless network; translating an indication of a provided quality of service of the data session comprised in a response to the request for providing the data session received from the wireless network into an indication of a reserved quality of service corresponding to the provided quality of service; responding to the reservation request by a reservation response; wherein the reservation response comprises the indication of the reserved quality of service.