A method of timeslot-wise detection of at least one radio signal in a cellular radio network. A radio signal is received via at least one first radio antenna and at least one second radio antenna. The radio signal received by the respective radio antennas is forwarded to at least one first radio receiver assigned to the first radio antenna and to at least one second radio receiver assigned to the second radio antenna. The radio signal forwarded is evaluated. The radio receivers are synchronized with a preconfigured frame structure. At least one identical time slot is selected out of the frame structure Timing information of the selected time slot is provided from the first radio receiver to the second radio receiver, from the second radio receiver to the first radio receiver and/or from the respective radio receiver to a central unit for calculating a time difference of arrival. Further, a device for timeslot-wise detection is described.