METHOD AND APPARATUS FOR PROCESSING A SATELLITE POSITIONING SYSTEM SIGNAL USING A CELLULAR ACQUISITION SIGNAL
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United States of America Patent
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app pub date -
Dec 15, 2009
filing date -
Nov 6, 2001
priority date (Note) -
Abandoned
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Abstract
Method and apparatus for processing satellite positioning system signals is described. In one example, assistance data is received at a mobile receiver from a first wireless network using a wireless transceiver. The first wireless network may be a non-synchronized cellular network. A time synchronization signal is obtained from a second wireless network at the mobile receiver using a wireless receiver. A time offset is then determined in response to the time synchronization signal. Satellite signals are processed at the mobile receiver using the assistance data and the time offset. The second wireless network may be a synchronized cellular network or may be a non-synchronized cellular network that is externally synchronized to GPS time.
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