Abstract: A cellular radio communication system having base stations constructed in the form of a daisy chain and a method of controlling data transmission using the system whereby data communications with a plurality of base stations as well as data communications among the respective base stations can be performed using a single base station controller and shared transmission lines in a specified area wherein expressways or railroads are constructed. The system includes a base station controller provided in a specified region of a determined service area, and a plurality of base stations linked in series to the base station controller through trunk lines.