Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-07-05
2011-07-05
Appiah, Charles N (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S422100, C455S440000, C455S456100, C455S456500
Reexamination Certificate
active
07974642
ABSTRACT:
Systems and methods for estimating a cell center location in a wireless communication system having all interface to a satellite positioning system (“SPS”) such as for example, a Geosynchronous Positioning System (“GPS”). The wireless communication system provides service to mobile stations within a cell, each mobile station includes a SPS receiver. Examples of the systems and methods for estimating a cell center location analyze the mobile station locations in a cell as a uniform distribution of mobile station locations and calculate a statistical measure characterizing the mobile station locations as a function of the mobile station locations. In one example, the statistical measure is a maximum likelihood mobile station location. In another example, the statistical measure is the mean mobile station location in the cell. The estimated cell center location may be used to approximate the location of the mobile station during a warm or cold restart of the SPS receiver part of the mobile station.
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Chambarkar Mangesh
Garin Lionel
Lin Xiangdong
Wan Marlene
Appiah Charles N
RatnerPrestia
Rideout William F
SiRF Technology Inc.
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