Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Inventio Ag

Frank Mueller

Juergen Hupp

Steffen Meyer

Thorsten Vaupel

Stephan Haimerl

Karin Loidl

Renata Kitti Zahonyi

Eric Birrer

Heiko Essinger

At a current position, a measurement packet is determined by a mobile terminal device at a measurement time. The measurement packet includes transmitter identifications of radio transmitters receivable at the current position of the mobile terminal device at the measurement time. By means of reference measurement packets provided to the mobile terminal device, the mobile terminal device itself can determine its current position. Additionally, a deviation of the determined transmitter identifications of the measurement packet from reference transmitter identifications of the reference measurement packets is determined. If a deviation of the reference transmitter identifications from the transmitter identifications determined at the current position is detected, experience messages can be generated that can again result in an update measure as, for example, updating the reference database by adding new transmitter identifications to the reference database and/or removing obsolete reference transmitter identifications from the reference database.

Concept of generating experience messages for updating a reference database

An apparatus for determining a coincidence of a position with a reference position, wherein radio signals from fixedly positioned radio transmitters can be received at the position, having a provider for providing properties of the radio signals of the fixedly positioned radio transmitters at the position, wherein the provided properties of the radio signals include transmitter identifications identifying the radio transmitters, a separator for separating the radio transmitters into a first number of radio transmitters previously recorded transmitter identifications of which at the reference position are identical with transmitter identifications provided at the position, and into a second number of radio transmitters previously recorded transmitter identifications of which at the reference position and transmitter identifications provided at the position are different, and a determiner for determining a measure of matching for the position on the basis of the provided properties of the radio signals, wherein both properties of the first number of radio transmitters and properties of the second number of radio transmitters are taken into account in the determination of a measure of matching, and wherein the properties of the first number of radio transmitters and the properties of the second number of radio transmitters enter the measure of matching differently.

Apparatus and method for determining a coincidence of a position with a reference position

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Nurernberg, Germany

Frank Mueller