Patent ID: 7020473

Claim:
A method for finding the position of a subscriber in a radio communications system, comprising: combining transmission signals from subscribers to form a transmission sum signal, which is passed by cables from a base station to at least two antenna devices for transmission; combining received signals which are received from respective subscribers via the at least two antenna devices, the received signals being combined to form a received sum signal, which is passed by cables to the base station; associating each individual antenna device with an individual area for radio communication with subscribers within the area; individually choosing cable lengths, which are used for signal transmission, for each antenna device; measuring a round trip delay time for the transmission signal and the received signal of a sought subscriber using the individually chosen cable lengths; determining which antenna device originated the received signal of the sought subscriber based on the round trip delay time; and determining the position of the sought subscriber to be the area associated with the antenna device which originated the received signal.