The invention relates to an interface-control protocol method for a radio system,
which has at least one frequency band provided for the two-way alternate utilization
of a first and a second radio interface standard. The radio system comprises a
number of stations, which each function in accordance with a first radio interface
standard and/or in accordance with a second radio interface standard, in which
a control station is provided that controls the two-way alternate utilization of
the frequency band.