Examples provide an access node controller, an apparatus for an access node, an access node for a mobile communication system, a mobile communication system, method and computer program for an access node. The access node controller is configured to determine one or more transmission parameters for a first access node of a mobile communication system. The mobile communication system further comprises a second access node. The access node controller comprises one or more interfaces configured to obtain priority area information of the second access node. The second access node has priority access in the priority area compared to the first access node. The access node controller comprises a control module configured to control the one or more interfaces and configured to determine the one or more transmission parameters for the first access node based on the priority area information of the second access node and based on an access condition at a priority area boundary.