A radio station for use in a radio communication network, the radio station comprising: a first part; and a second part that is physically separated from the first part and is connected to the first part via a transmission line so as to be able to communicate with the first part, wherein the first part comprises first scheduling means and first digital signal processing means and wherein the second part comprises second digital signal processing means, said radio station being characterized in that: the first part additionally comprises a controller adapted to perform, for each of a plurality of bearers established between an upper network and the radio station for a plurality of mobile stations connected to the second part, a selection between said first and second digital signal processing means for that bearer, said selection being based on a security level required by the bearer, wherein the first scheduling means is adapted to perform dynamic scheduling to allocate a plurality of radio resources to the plurality of mobile stations, wherein the first digital signal processing means is adapted to perform baseband processing only for the bearers for which said first digital signal processing means is selected, wherein the second digital signal processing means is adapted to perform baseband processing only for the bearers for which said second digital signal processing means is selected, and wherein the second part additionally comprises analog signal processing means coupled to said first and second digital signal processing means for performing analog signal processing including at least one of frequency conversion and power amplification to transmit and receive user data for said bearers including downlink user data and uplink user data to and from said plurality of mobile stations via an air interface. a first part; and a second part that is physically separated from the first part and is connected to the first part via a transmission line so as to be able to communicate with the first part, wherein the first part comprises first scheduling means and first digital signal processing means and wherein the second part comprises second digital signal processing means, said radio station being characterized in that: the first part additionally comprises a controller adapted to perform, for each of a plurality of bearers established between an upper network and the radio station for a plurality of mobile stations connected to the second part, a selection between said first and second digital signal processing means for that bearer, said selection being based on a security level required by the bearer, wherein the first scheduling means is adapted to perform dynamic scheduling to allocate a plurality of radio resources to the plurality of mobile stations, wherein the first digital signal processing means is adapted to perform baseband processing only for the bearers for which said first digital signal processing means is selected, wherein the second digital signal processing means is adapted to perform baseband processing only for the bearers for which said second digital signal processing means is selected, and wherein the second part additionally comprises analog signal processing means coupled to said first and second digital signal processing means for performing analog signal processing including at least one of frequency conversion and power amplification to transmit and receive user data for said bearers including downlink user data and uplink user data to and from said plurality of mobile stations via an air interface. the first part additionally comprises a controller adapted to perform, for each of a plurality of bearers established between an upper network and the radio station for a plurality of mobile stations connected to the second part, a selection between said first and second digital signal processing means for that bearer, said selection being based on a security level required by the bearer, wherein the first scheduling means is adapted to perform dynamic scheduling to allocate a plurality of radio resources to the plurality of mobile stations, wherein the first digital signal processing means is adapted to perform baseband processing only for the bearers for which said first digital signal processing means is selected, wherein the second digital signal processing means is adapted to perform baseband processing only for the bearers for which said second digital signal processing means is selected, and wherein the second part additionally comprises analog signal processing means coupled to said first and second digital signal processing means for performing analog signal processing including at least one of frequency conversion and power amplification to transmit and receive user data for said bearers including downlink user data and uplink user data to and from said plurality of mobile stations via an air interface.