Methods and systems of updating a zone profile comprising obtaining a plurality of radio signal parameter measurements and, if the plurality of radio signal parameter measurements contains at least one measurement corresponding to a dominant element of the zone profile and if the plurality of radio signal parameter measurements contains at least one measurement corresponding to a candidate element (e.g., statistically unlikely element) of the zone profile, updating the profile by either adjusting an existing parameter value or by adding a new element to the zone profile corresponding to the candidate element.