An example technique is provided for determining a synchronization, in case of a failed base station-core network interface, for setting-up a self-controlled radio access network based on an initial communications mode of a base station and a synchronization status of the communications mode, wherein the initial communications mode is at least one of the following: a device-to-device communications mode and a cellular communications mode, determining a resource configuration for setting up the self-controlled radio access network, the self-controlled radio access network including the base station operating with a failed or limited capability base station-core network interface, and indicating the resource configuration to at least one user device.