Telecommunications – Transmitter and receiver at separate stations – With control signal
Reexamination Certificate
2011-08-02
2011-08-02
Addy, Anthony S (Department: 2617)
Telecommunications
Transmitter and receiver at separate stations
With control signal
C455S456100, C455S404200, C455S067160, C455S441000, C342S357780, C342S357200, C342S357230, C342S357340, C342S357350
Reexamination Certificate
active
07991362
ABSTRACT:
A wireless terminal determines the position of a moving base station and determines timing and/or frequency corrections. A wireless terminal determines its relative position with respect to the base station and determines a timing adjustment correction. The wireless terminal applies the determined timing correction to control uplink signaling timing and achieve synchronization at the base station's receiver. The wireless terminal determines its relative velocity with respect to the moving base station and determines a Doppler shift adjustment which it adds to the uplink carrier frequency or to its baseband signal. Base station position is determined from the current time and stored information correlating the base station position with time, e.g., for a geo-synchronous satellite. Base station position information, e.g., a GPS derived base station position fix, is determined from downlink airlink broadcast information, e.g., for an aircraft base station. Wireless terminals may be mobile and include a GPS receiver for wireless terminal position determination.
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Lane Frank A.
Laroia Rajiv
Li Junyi
Addy Anthony S
Qualcomm Incorporated
Talpalatsky Semion
LandOfFree
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