In a mobile communication system of the WACS type, frame formats are unified for DSL, HDSL, and DS1 channels. In addition, each novel base station (25) comprises a radio frame number processor for adding, to upward encrypted information data directed from mobile stations (27) towards...http://www.google.fr/patents/US5717762?utm_source=gb-gplus-shareBrevet US5717762 - WACS-type mobile communication with a unified frame format
WACS-type mobile communication with a unified frame format
