Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2001-09-18
2008-11-25
Lee, John J (Department: 2618)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S517000, C455S456100, C455S067160
Reexamination Certificate
active
07457630
ABSTRACT:
The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location on a subscriber unit in a terrestrial wireless telephone system using a set of satellites each transmitting a signal, the terrestrial wireless telephone system having base stations, including the steps of transmitting an aiding message from the base station to the subscriber unit, said aiding message containing information regarding a data boundary for each signal from the set of satellites, applying correlation codes to each signal yielding corresponding correlation data and accumulating said correlation data over an first interval preceding a corresponding data boundary yielding a first accumulation result, and a second interval following said corresponding data boundary yielding a second accumulation result.
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Kang Inyup
Sih Gilbert C.
Zou Qiuzhen
Greenhaus Bruce W.
Gunderson Linda G.
Lee John J
QUALCOMM Incorporated
Rouse Thomas R.
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