It is inter alia disclosed to identify coverage area position information to obtain identified coverage area position information. The identified coverage area position information comprises at least respective position information for one or more coverage areas associated with a device for which a position estimate is to be determined at least based on at least a part of the identified coverage area position information. The respective position information for the one or more coverage areas is stored in a database. The identifying is at least based on coverage area identification information determined by the device and comprising at least respective identification information for the one or more coverage areas. A validity of respective position information for at least one coverage area is checked. The respective position information for the at least one coverage area is stored in the database, and the checking is at least based on respective position information for at least one of the one or more coverage areas comprised in the identified coverage area position information.