A method comprising: - determining (801, 903, 1003, 1005, 1101, 1201, 1303, 1305, 1307), at a terminal, whether at least one terminal position of said terminal, said terminal position associated with a coverage area of a communication node, shall be discarded or reported to a unit that is different from said terminal to allow at least one of said coverage area and said communication node to be characterized at least partially based on said at least one reported terminal position, wherein said determining (801, 903, 1003, 1005, 1101, 1201, 1303, 1305, 1307) whether said at least one terminal position shall be discarded or reported is at least partially based on at least one of: - at least one of a model (22, 23) for said coverage area of said communication node and a modified model for said coverage area of said communication node that is obtained by modifying said at least one model (22, 23) for said coverage area of said communication node, - at least one of information on terminal positions that have been reported by said terminal before and a state of a process for characterizing said coverage area of said communication node at least partially based on one or more terminal positions reported by one or more terminals, - information on a quality of an estimate of a position of said communication node, wherein, if said determining is at least partially based on said information on said quality of an estimate of a position of said communication node, it is determined whether said at least one terminal position and information on a distance between said at least one terminal position and said communication node shall be discarded or reported. - determining (801, 903, 1003, 1005, 1101, 1201, 1303, 1305, 1307), at a terminal, whether at least one terminal position of said terminal, said terminal position associated with a coverage area of a communication node, shall be discarded or reported to a unit that is different from said terminal to allow at least one of said coverage area and said communication node to be characterized at least partially based on said at least one reported terminal position, wherein said determining (801, 903, 1003, 1005, 1101, 1201, 1303, 1305, 1307) whether said at least one terminal position shall be discarded or reported is at least partially based on at least one of: - at least one of a model (22, 23) for said coverage area of said communication node and a modified model for said coverage area of said communication node that is obtained by modifying said at least one model (22, 23) for said coverage area of said communication node, - at least one of information on terminal positions that have been reported by said terminal before and a state of a process for characterizing said coverage area of said communication node at least partially based on one or more terminal positions reported by one or more terminals, - information on a quality of an estimate of a position of said communication node, wherein, if said determining is at least partially based on said information on said quality of an estimate of a position of said communication node, it is determined whether said at least one terminal position and information on a distance between said at least one terminal position and said communication node shall be discarded or reported. - at least one of a model (22, 23) for said coverage area of said communication node and a modified model for said coverage area of said communication node that is obtained by modifying said at least one model (22, 23) for said coverage area of said communication node, - at least one of information on terminal positions that have been reported by said terminal before and a state of a process for characterizing said coverage area of said communication node at least partially based on one or more terminal positions reported by one or more terminals, - information on a quality of an estimate of a position of said communication node, wherein, if said determining is at least partially based on said information on said quality of an estimate of a position of said communication node, it is determined whether said at least one terminal position and information on a distance between said at least one terminal position and said communication node shall be discarded or reported.