A system and method for traffic management in a radio system monitors at least one cell load parameter of non-real-time users in a radio cell. The method comprises: providing a first and a second conductor; providing a conductive layer; forming a part of the conductive layer into a data storage layer by a plasma oxidation process, wherein the data storage layer is positioned between the first and the second conductor. Therefore, the developer can be returned from the second carrying path to the first carrying path through a second communicating path and the one or more cuts.