In a radio communication system having narrow-band up- and down-link radio channels and a wide-band down-link radio channel, when a radio terminal is to receive data through the wide-band down-link radio channel, the narrow-band up- and down-link radio channels are assigned to the radio terminal in advance....http://www.google.de/patents/US7130287?utm_source=gb-gplus-sharePatent US7130287 - Radio communication system
