Wireless, ground link-based aircraft data communication system with roaming feature
First Claim
1. A method of facilitating compliance with limitations imposed upon wireless communications by governing jurisdictions comprising:
- transmitting from a fixed wireless router an interrogation beacon on a plurality of preselected radio-frequency (RF) channels containing information representative of communication limitations imposed by a jurisdiction governing the location of the wireless router;
receiving at a mobile RF transceiver unit, upon the mobile RF transceiver unit entering within the transmission range of the wireless router, the interrogation beacon containing the communications limitations information on at least one of said preselected RF channels;
adjusting at the mobile RF transceiver unit transmission parameters applicable to the transmission of data from the mobile RF transceiver unit to the wireless router; and
transmitting data from the mobile RF transceiver unit to the wireless router on a selected channel in accordance with communication limitation imposed by the jurisdiction governing the location of the wireless router.
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Accused Products
Abstract
A flight information communication system has a plurality of RF direct sequence spread spectrum ground data links that link respective aircraft-resident subsystems, in each of which a copy of its flight performance data is stored, with airport-located subsystems. The airport-located subsystems are coupled by way communication paths, such as land line telephone links, to a remote flight operations control center. At the flight operations control center, flight performance data downlinked from plural aircraft parked at different airports is analyzed. In addition, the flight control center may be employed to direct the uploading of in-flight data files, such as audio, video and navigation files from the airport-located subsystems to the aircraft.
72 Citations
31 Claims
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1. A method of facilitating compliance with limitations imposed upon wireless communications by governing jurisdictions comprising:
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transmitting from a fixed wireless router an interrogation beacon on a plurality of preselected radio-frequency (RF) channels containing information representative of communication limitations imposed by a jurisdiction governing the location of the wireless router;
receiving at a mobile RF transceiver unit, upon the mobile RF transceiver unit entering within the transmission range of the wireless router, the interrogation beacon containing the communications limitations information on at least one of said preselected RF channels;
adjusting at the mobile RF transceiver unit transmission parameters applicable to the transmission of data from the mobile RF transceiver unit to the wireless router; and
transmitting data from the mobile RF transceiver unit to the wireless router on a selected channel in accordance with communication limitation imposed by the jurisdiction governing the location of the wireless router. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of facilitating compliance with limitations imposed upon wireless communications by governing jurisdictions comprising:
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transmitting from a fixed wireless router an interrogation beacon on plurality of preselected radio-frequency (RF) channels containing information representative of communication limitations imposed by a jurisdiction governing the location of the wireless router;
receiving at a mobile RF transceiver unit, upon the mobile unit entering within the transmission range of the wireless router, the interrogation beacon containing the communications limitations information on at least one of said preselected RF channels;
transmitting a response message from the mobile RF transceiver unit to the wireless router, on each of the preselected channels on which the mobile RF transceiver unit received an interrogation beacon, indicating a preferred frequency channel;
selecting at the wireless router a frequency channel for further communications with the mobile RF transceiver;
adjusting at the mobile unit transmission parameters applicable to the transmission of data from the mobile unit to the wireless router; and
transmitting data from the mobile unit to the wireless router on the selected channel in accordance with communication limitations imposed by the jurisdiction governing the location of the wireless router. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of facilitating compliance with limitations imposed upon wireless communications by governing jurisdictions comprising:
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transmitting from fixed wireless router an interrogation beacon on a plurality of frequency channels approved for operation in a given location containing information representative of communication limitations imposed by a jurisdiction governing the location of the wireless router;
receiving at a mobile RF transceiver unit, upon the mobile unit entering within the transmission range of the wireless router, the interrogation beacon containing the communications limitations information on at least one of said approved channels;
transmitting a response message from the mobile RF transceiver unit to the wireless router, on each of the approved channels on which the mobile RF transceiver unit received an interrogation beacon, indicating a preferred frequency channel;
selecting at the wireless router a frequency channel for further communications with the mobile RF transceiver;
adjusting at the mobile unit transmission parameters applicable to the transmission of data from the mobile unit to the wireless router; and
transmitting data from the mobile unit to the wireless router on the selected channel in accordance with communication limitations imposed by the jurisdiction governing the location of the wireless router. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of facilitating compliance with limitations imposed upon wireless communications by governing jurisdictions comprising:
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transmitting from a fixed wireless router to a mobile RF transceiver unit an interrogation beacon on a plurality of preselected radio-frequency (RF) channels containing data representative of emitted power levels imposed by a jurisdiction governing the location of the wireless router; and
responding to the interrogation beacon by adjusting at the mobile RF transceiver unit the emitted power to a level that will not exceed the emitted power levels imposed by the governing jurisdiction.
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Specification