METHOD FOR SIMPLEX COMMUNICATION FROM MOBILE USER TO USER OF WIRE-LINE TELEPHONE NETWORK Russian patent published in 1999 - IPC

FIELD: mobile communication equipment. SUBSTANCE: stationary equipment includes simplex radio station which operates at frequency F1, and control receiver, which operates at frequency F2. Telephone line is connected to simplex radio station through differential system. Mobile user uses radio station, which operates in two-frequency pulse mode. Information exchange between users is achieved using frequency F1. Mobile radio station is switched into transmission mode, so that it transmits short control command using frequency F2, and then switches into transmission mode using frequency F1. Control receiver receives said command and switches base simplex radio station into reception mode. Reverse switching is achieved using known method, for example, after ceasing of carrier frequency of mobile radio station. EFFECT: increased efficiency of frequency allocation, possibility to use simplex base stations. 1 dwg