FIELD: information technology.
SUBSTANCE: temporary radio base station (RBS, 140) is positioned in or adjacent to the targeted RBS (120), and transmits at a frequency in the candidate list of the targeted RBS (120). The transmissions are at such a power level that the traffic of the targeted RBS (120) is transferred to the temporary RBS (140). The temporary RBS transmits the identification signal the RBS whose frequency the temporary RBS transmits at, and transmits a list of candidate frequencies such that user terminals whose traffic has been transferred to the temporary RBS cannot find signals with sufficient strength on any of the candidate frequencies.
EFFECT: preventing cellular telephones from functioning within a certain geographical area.
17 cl, 5 dwg
