Patent ID: 7013144

Claim:
A radio communication system, comprising: a single or a plurality of mobile station equipments which can be located in any of a plurality of wireless zones; a plurality of BTSs individually forming the plurality of wireless zones; and a base station controller being cooperative with said plurality of BTSs, for performing channel control of a call occurring in said single or plurality of mobile station equipments, the channel control including soft hand-off, and wherein said single or plurality of mobile station equipments each includes: a position measuring section for measuring a position of a mobile station; and a notifying section being given an allowable maximum number n of radio channels used in parallel for the soft hand-off of the mobile station and base-station positions indicating positions of all or a part of said single or plurality of BTSs, and when identifying a state in which the mobile station is feasible of the soft hand-off, for notifying the state to the BTSs individually forming n or less wireless zones which are specified according to relative distances in ascending order of the relative distances between the measured position of the mobile station and the corresponding base-station positions; and said base station controller includes: a transmission-quality measuring section for measuring transmission qualities of reception waves arriving in the notified state from said single or plurality of mobile station equipments; and a channel allotting section being given a maximum number N of radio channels through which the plurality of BTSs can transmit in parallel, for allotting N or less radio channels to mobile stations in descending order of the measured transmission qualities via a BTS as radio channels to be used for the soft hand-off, the mobile stations being transmitting ends of the reception waves with their transmission qualities measured.