A method is disclosed which is intended for use in multiple-input multiple-output wireless communication systems which have a plurality of adjacent cells, each containing one or more base stations which co-operatively transmit signals to, and receive signals transmitted from, a user equipment. The storage disk has a plurality of tracks each having an inner diameter edge and an outer diameter edge. The container includes an end face which surrounds the opening and on which the closure element bears. The first metallic ring has an internal peripheral wall that frames the semiconductor chip and is separated from the external peripheral wall by a gap.