Mobile communication system, user equipment control program and method of determining the establishment of synchronization in a mobile communication system

A computer (20) user for use in a mobile communication system using W-CDMA, comprendiendodicho equipment (20) user: means (22, 23) for measuring the reception quality measuring reception quality of unasenal including reception quality of a dedicated channel; means (24, 26) for measuring the phase difference, which measure the phase difference between signals pilototransmitidas diversity from a base station (10) in their respective systems diversity estimating means TPC-BER estimating error rates in bits, the control bits lapotencia transmission in said dedicated channel, based on reception quality of said canaldedicado measured by said means (22, 23) for measuring reception quality; and means for determining the synchronization establishment performing delestablecimiento determination synchronization in said equipment (20) user, based on an error rate in bitsestimada by said estimating means TPC-BER, the measured phase difference mediantedichos means (24; 26) for measuring the phase difference, and the measurement quality mediantedichos means receiving (22, 23) for measuring the reception quality, wherein the computer (20) user further comprises means for communicating with a base station (10) having a predetermined communicable area, when the computer (20) user is located in dichaarea communicable, means for communicating with said base station (10) through a channel commonly comunutilizado multiple equipment (20) user and a dedicated establecidoindividualmente for each computer (20) user, means for estimating the bit error rate, the bitsde Control channel transmission power transmitted from said base (10) to the computer (20) deusuario through said dedicated channel station, and means to perform the determination of establecimientode synchronization based on the estimated error rate in bits.