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...http://www.google.de/patents/US6985745?utm_source=gb-gplus-sharePatent US6985745 - Method and radio signature position determining entity (RS-PDE) for maintaining location database reliability