Mobile radio communications system

A mobile radio communication system comprising:

• a plurality of base stations;
• and
• a mobile communications exchanger accommodating said plurality of base stations,
• wherein said plurality of base stations are coupled to said mobile communications exchanger through signal lines,
• wherein said plurality of base stations are installed along a road along which a mobile station moves,
• wherein each base station allocates a same frequency of one of a plurality of radio transmission channels to one of a plurality of mobile stations as a frequency allocated by an adjacent base station which previously dominates said one mobile station, and a same time slot on said one radio transmission channel as a time slot of said one radio transmission channel allocated by said adjacent-base station which previously dominates said one mobile station after a lapse of a fixed time period calculated from a previously assumed moving speed of said one mobile station, when said one mobile station moves at the previously assumed moving speed, and
• wherein each base station autonomously allocates to one of said mobile stations a different frequency of one of said radio transmission channels from a frequency allocated by an adjacent base station which previously dominates said one mobile station and a different time slot from a time slot on said one radio transmission channel allocated by said adjacent base station which previously dominates said one mobile station, when said one mobile station moves at a moving speed less than a previously assumed moving speed of said one mobile station.