Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-04-13
2011-11-08
Zewdu, Meless N (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S404200, C455S433000, C455S457000, C455S423000, C455S440000, C379S045000
Reexamination Certificate
active
08055272
ABSTRACT:
The present invention provides a method and system for helping to improve processing duration and successful position determination in a position-determining system. The position-determining system receives a request to determine position of a mobile station, such as a cellular wireless communication device, and the request includes a timer value indicative of the maximum allowed time for responding to the request. The position-determining system then dynamically determines how long to spend attempting a primary location-determination process, based on the indicated timer value and an expected time necessary to employ a fallback, or secondary, location-determination process. If the position-determining system fails to determine the position within the time allocated to the primary process, it resorts to application of the secondary position-determination process. If either the primary or the secondary tier of location determination determines a position, that position is returned to the requesting entity; otherwise, a default or error message is returned.
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Patel Mahendra
Sprint Spectrum L.P.
Zewdu Meless N
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