Base station with time-aligned mobile transmitting moments according to distance to base station

A base station for a digital time division multiple access (TDMA) radio network, the base station comprising:

• a radio transceiver,
• means for measuring a time difference between the transmissions of the transceiver and a mobile radio station due to a distance between the base station and the mobile radio station,
• means for controlling the mobile radio station to adjust its transmission relative to the transmission of the transceiver by a predetermined timing advance compensating for said time difference, said timing advance having a maximum value determining a maximum radius r.sub.MAX for an effective service area of the base station transceiver,
• means for providing a timing offset between the reception and the transmission of the transceiver in a manner that the maximum radius of the service area of the transceiver is r.sub.1 +r.sub.MAX, and the service area has a central area which has a radius r.sub.1 and within which the transceiver is not capable of providing services to mobile radio stations, where r.sub.1 is directly proportional to said timing offset, and
• a second radio transceiver where the timing between reception and transmission is normal and the outer radius of the service area of which is at a distance r.sub.MAX from the base station, said offset between transmission and reception being selected so that the service areas of the first-mentioned transceiver and the second transceiver overlap.