An apparatus and method that map physical control channels onto radio resource elements are described. The method may include mapping physical control channels of a first mobile radio technology onto a first set of radio resource element groups, mapping physical control channels of the second mobile radio technology onto a second set of radio resource element groups, generating mapping information specifying the mapping of physical control channels of the first mobile radio technology onto the first set of radio resource element groups, and generating mapping information specifying the mapping of physical control channels of the second mobile radio technology onto the second set of radio resource element groups.