Position location using integrated services digital broadcasting—terrestrial (ISDB-T) broadcast television signals
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United States of America Patent
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Oct 4, 2005
Grant Date -
Aug 21, 2003
app pub date -
Nov 8, 2002
filing date -
Aug 17, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method, apparatus, and computer-readable media for determining the position of a user terminal comprises receiving at the user terminal a digital television (DTV) broadcast signal from a DTV transmitter, wherein the DTV signal comprises an Integrated Services Digital Broadcasting-Terrestrial (ISDB-T) signal; determining a pseudo-range between the user terminal and the DTV transmitter based on a known component in the broadcast DTV signal; and determining a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
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