Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-01-10
2006-01-10
Corsaro, Nick (Department: 2682)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456100, C455S456300, C455S456400, C455S456500, C455S456600
Reexamination Certificate
active
06985745
ABSTRACT:
A method and a Radio Signature Positioning Determining Entity (RS-PDE) are provided for maintaining the reliability of a location database of the RS-PDE. A Data Transfer Scheduler (DTS) of the RS-PDE receives new location data comprising signal strength measurements records, and the new location data is correlated by a Data Correlation Device (DCD) with existing location data of the location database. The correlated location data is uploaded by a Data Uploader (DU) into the location database. A Data Performance Monitor (DPM) detects if the RS-PDE provides better positioning results using that correlated data, and if so, the RS-PDE then uses the correlated data for mobile station positioning. The location data update cycle may be triggered by a configurable timer defining an update periodicity, or by a detection of insufficient positioning accuracy of the RS-PDE using the existing location data.
REFERENCES:
patent: 6263208 (2001-07-01), Chang et al.
patent: 6362783 (2002-03-01), Sugiura et al.
patent: 6725051 (2004-04-01), Fidler
patent: 6757545 (2004-06-01), Nowak et al.
patent: 00/50918 (2000-12-01), None
Corsaro Nick
Ericsson Canada Inc.
Pan Yuwen
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