Position determination using received broadcast signals

Details Position determination using received broadcast signals Position determination using received broadcast signals

2010-10-15

2011-12-13

Phuong, Dai A (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S404200, C455S440000, C455S456200, C455S456300, C455S457000, C370S331000, C370S332000

Reexamination Certificate

active

08078194

ABSTRACT:
A radio device that is capable of positioning itself within a broadcast radio system includes a receiver operable to receive a plurality of broadcast radio signals, each broadcast from a respective one of a plurality of broadcast radio signal sources. The radio device further includes processing circuitry operable to determine respective call station identification information for each of the broadcast radio signal sources from the broadcast radio signals, measure respective signal quality characteristics for each of the received broadcast radio signals, identify station position data associated with each of the broadcast radio signal sources from the respective call station identification information, and calculate a location of the radio device using the signal quality characteristics and station position data associated with at least three broadcast radio signal sources.

REFERENCES:
patent: 2004/0064251 (2004-04-01), Miller et al.
patent: 2005/0227703 (2005-10-01), Cheng
patent: 2008/0039114 (2008-02-01), Phatak et al.
patent: 2010/0120422 (2010-05-01), Cheung et al.
patent: 2010/0156706 (2010-06-01), Farmer et al.

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