A method for supporting wireless connectivity of a mobile station to a cellular network, wherein the mobile station is located within the coverage area of a femtocell base station of which it is a non-CSG mobile station, and wherein the mobile station experiences interference which it indicates to the femtocell base station, is characterized in that the femtocell base station, upon receiving the experienced interference indication from the non-CSG mobile station, triggers the non-CSG mobile station to report interference related information, wherein, based on the interference related information, the femtocell base station performs a first check whether it is originator of the interference experienced by the non-CSG mobile station. Furthermore, a corresponding femtocell base station for supporting wireless connectivity of a mobile station to a cellular network is disclosed.