Telecommunications – Radiotelephone system – Security or fraud prevention
Patent
1996-06-27
1999-04-06
Urban, Edward F.
Telecommunications
Radiotelephone system
Security or fraud prevention
455411, 455 672, H04Q 720
Patent
active
058930310
ABSTRACT:
A system and method for collecting fingerprint reference wave forms under controlled conditions includes a radio frequency (RF) enclosure designed to receive a cellular telephone. A control system, including a transmitter and receiver provides RF communications with a cellular phone placed in the enclosure. A processor controls operation of the transmitter and receiver. The processor sends commands to the cellular phone in the enclosure using the transmitter. The transmitted commands are selected to elicit a RF transmission from the cellular phone in response to the command. The receiver detects the response from the cellular telephone and generates a reference wave form indicative of the transmission characteristics of the transmitter of the cellular phone in the enclosure. The processor captures one or more reference waveforms that can be used to generate a fingerprint indicative of a transmission characteristic of the transmitter of the cellular telephone. In addition, the system can include an external power supply and temperature control system to vary the voltage level of power supplied to the cellular telephone in the enclosure and to vary the temperature in the enclosure. By varying the operating voltage and temperature, the processor can collect reference waveforms under a variety of operating conditions. In addition, the processor can select the carrier frequency for the cellular telephone and for the transmitter and receiver of the control system. Furthermore, the processor can vary the transmit power of the system transmitter and the transmit power of the transmitter within the cellular telephone itself. The system is sized to be readily moved from one location to another to permit the simple collection of reference waveforms under a variety of controlled conditions.
REFERENCES:
patent: 3120641 (1964-02-01), Buckley
patent: 3273150 (1966-09-01), Emerson
patent: 3308463 (1967-03-01), Emerson
patent: 3365667 (1968-01-01), Deutsch et al.
patent: 3662389 (1972-05-01), Coffin et al.
patent: 3913013 (1975-10-01), Barley et al.
patent: 4232319 (1980-11-01), Fusinski
patent: 4249257 (1981-02-01), Campbell
patent: 4305153 (1981-12-01), King
patent: 4797931 (1989-01-01), Furukawa et al.
patent: 4800387 (1989-01-01), Joy
patent: 4816767 (1989-03-01), Cannon et al.
patent: 4843562 (1989-06-01), Kenyon et al.
patent: 4864315 (1989-09-01), Mohuchy
patent: 4950999 (1990-08-01), Agnello et al.
patent: 4955049 (1990-09-01), Ghisler
patent: 4968983 (1990-11-01), Maeda
patent: 5005210 (1991-04-01), Ferrell
patent: 5091942 (1992-02-01), Dent
patent: 5134405 (1992-07-01), Ishihara et al.
patent: 5222140 (1993-06-01), Beller et al.
patent: 5237612 (1993-08-01), Raith
patent: 5239294 (1993-08-01), Flanders et al.
patent: 5241598 (1993-08-01), Raith
patent: 5282250 (1994-01-01), Dent et al.
patent: 5299263 (1994-03-01), Beller et al.
patent: 5302960 (1994-04-01), Boers
patent: 5303285 (1994-04-01), Kerihuel et al.
patent: 5309501 (1994-05-01), Kozik et al.
patent: 5315636 (1994-05-01), Patel
patent: 5319699 (1994-06-01), Kerihuel et al.
patent: 5329591 (1994-07-01), Magrill
patent: 5335265 (1994-08-01), Cooper et al.
patent: 5335278 (1994-08-01), Matchett et al.
patent: 5345595 (1994-09-01), Johnson et al.
patent: 5390245 (1995-02-01), Dent et al.
patent: 5392355 (1995-02-01), Khurana et al.
patent: 5392356 (1995-02-01), Konno et al.
patent: 5420908 (1995-05-01), Hodges et al.
patent: 5420910 (1995-05-01), Rudokas et al.
patent: 5448760 (1995-09-01), Frederick
patent: 5455863 (1995-10-01), Brown et al.
patent: 5465387 (1995-11-01), Mukherjee
patent: 5467382 (1995-11-01), Schorman
patent: 5488649 (1996-01-01), Schellinger
patent: 5509075 (1996-04-01), Grube et al.
patent: 5517554 (1996-05-01), Mitchell et al.
patent: 5517555 (1996-05-01), Amadon et al.
patent: 5517568 (1996-05-01), Grube et al.
patent: 5535431 (1996-07-01), Grube et al.
patent: 5537474 (1996-07-01), Brown et al.
patent: 5541977 (1996-07-01), Hodges et al.
patent: 5548636 (1996-08-01), Bannister et al.
patent: 5551073 (1996-08-01), Sammarco
patent: 5555192 (1996-09-01), Grube et al.
patent: 5555551 (1996-09-01), Rudokas et al.
patent: 5625869 (1997-04-01), Nagamatsu et al.
patent: 5633914 (1997-05-01), Rosa
patent: 5655004 (1997-08-01), Holbrook
patent: 5715518 (1998-02-01), Barrere et al.
patent: 5748722 (1998-05-01), Lee
patent: 5770846 (1998-06-01), Mos et al.
Bergmann et al., "Protocol Conformance Testing of a GSM Mobile Station," MRC Mobile Radio Conference, Nice, France, 13-15 Nov. 1991, pp. 17-24.
Kall, J., "The GSM System Simulator," Conference Proceedings on Area Communication, Stockholm, Sweden, Jun. 13-17, 1988, pp. 478-481.
Ehrlich et al., "Automotive Environments and Testing for Cellular Mobile Telephones," 35.sup.th IEEE Vehicular Technology Conference, Boulder, Colorado, May 21-23, 1985, pp. 165-169.
Komata et al., "Automatic Measurement for Mobile Radio Unit," Review of the Electrical Communication Laboratories, vol. 30,(2):380-391, 1982.
Hoogerwerf David N.
Stanhope David M.
Cellular Technical Services Company, Inc.
Raju Seid
Urban Edward F.
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