Connection inhibition apparatus and method

Details Connection inhibition apparatus and method Connection inhibition apparatus and method

2011-05-03

2011-05-03

Sharma, Sujatha (Department: 2618)

Telecommunications

Interference signal transmission

C455S426100, C455S562100, C370S527000

Reexamination Certificate

active

07937038

ABSTRACT:
The apparatus transmits in a first zone, for example, an aircraft, a masking signal which masks transmissions from a second zone outside of the first. By doing this a mobile cellular telephone is inhibited from connecting or attempting to connect to base-stations on the ground. A hole in the masking signal spectrum may be provided to enable connection to a base-station within the aircraft. Alternatively, a base-station within the aircraft may be arranged to transmit at a power level greater than the masking signal.

REFERENCES:
patent: 2003/0224719 (2003-12-01), Lucidarme et al.
patent: 2004/0152481 (2004-08-01), Georgeaux et al.
patent: 2005/0085267 (2005-04-01), Lemson et al.
patent: 2005/0206551 (2005-09-01), Komiak et al.
patent: 2008/0089392 (2008-04-01), Anglin, Jr.
patent: 0 546 849 (1993-06-01), None
patent: WO 00/54538 (2000-09-01), None
patent: WO 02/078384 (2002-10-01), None

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