Measuring and testing – Navigation – Take-off and landing monitors
Reexamination Certificate
2005-11-29
2005-11-29
Oen, William (Department: 2855)
Measuring and testing
Navigation
Take-off and landing monitors
Reexamination Certificate
active
06968737
ABSTRACT:
The present invention is a system and method for automated position location using RF signposting. The present invention comprises a plurality of transmitting units placed throughout a service area. Each transmitting unit repeatedly transmits a signal including position information related to a position associated with the transmitting unit. The position information may be an absolute position or an encoded position based on the structure of a building in which the transmitting unit is located. A receiving unit receives the signal transmitted from a transmitting unit and determines the position of the receiving unit, based on the received indication. The transmitting units are placed to provide uniform coverage of the service area, thus providing position location indoors and in urban areas where GPS does not function properly.
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Chen Kuo-Wei Herman
Driessen Peter Frank
Gitlin Richard Dennis
Sabnani Krishan Kumar
Sizer II Theodore
Lucent Technologies - Inc.
Oen William
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