Some embodiments of the invention provide a method for operating a first base station of a radio access network (RAN). At the first base station, the method receives a set of allow and block policies for allocating carrier resources to carrier beams utilized by the first base station for mobile devices within a first region serviced by the first base station, said first region located near a second region serviced by a second base station. At the first base station, the method identifies a first mobile device operating in the first region. At the first base station, the method uses the set of allow and block policies to allocate carrier resources to a carrier beam used to communicate with the first mobile device in the first region.