Concept of generating experience messages for updating a reference database
First Claim
1. An apparatus for updating a reference database comprising reference measurement packets associated with geographical reference positions, which comprise reference transmitter identifications of radio transmitters receivable at the reference position at the reference times, determined at the respective geographical reference positions at reference times, comprising:
- a determiner for determining a current measurement packet at a current geographical position at a current time, wherein the current measurement packet comprises transmitter identifications of radio transmitters receivable at the current geographical position at the current time;
a selector for selecting an amount of reference measurement packets exceeding a predetermined measure of correspondence to the current measurement packet, wherein the amount of selected reference measurement packets comprises a reference measurement packet or a plurality of reference measurement packets;
a storer for storing that is implemented to store transmitter identifications received prior to the current time and after a last update of the reference database in an amount of previously received radio transmitters;
a determiner for determining a transmitter identification comprised in the amount of selected reference measurement packets and not comprised in the current measurement packet; and
a generator for generating an experience message with respect to the determined transmitter identification, wherein the generator for generating the experience message is adapted to store the determined transmitter identification in an amount of transmitter identifications to be potentially removed, when the determined transmitter identification is not stored in the amount of previously received radio transmitters stored by the storer.
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Accused Products
Abstract
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.
25 Citations
12 Claims
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1. An apparatus for updating a reference database comprising reference measurement packets associated with geographical reference positions, which comprise reference transmitter identifications of radio transmitters receivable at the reference position at the reference times, determined at the respective geographical reference positions at reference times, comprising:
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a determiner for determining a current measurement packet at a current geographical position at a current time, wherein the current measurement packet comprises transmitter identifications of radio transmitters receivable at the current geographical position at the current time; a selector for selecting an amount of reference measurement packets exceeding a predetermined measure of correspondence to the current measurement packet, wherein the amount of selected reference measurement packets comprises a reference measurement packet or a plurality of reference measurement packets; a storer for storing that is implemented to store transmitter identifications received prior to the current time and after a last update of the reference database in an amount of previously received radio transmitters; a determiner for determining a transmitter identification comprised in the amount of selected reference measurement packets and not comprised in the current measurement packet; and a generator for generating an experience message with respect to the determined transmitter identification, wherein the generator for generating the experience message is adapted to store the determined transmitter identification in an amount of transmitter identifications to be potentially removed, when the determined transmitter identification is not stored in the amount of previously received radio transmitters stored by the storer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for updating a reference database comprising reference measurement packets associated with geographical reference positions, which comprise reference transmitter identifications of radio transmitters receivable at the reference position at the reference times, determined at the respective geographical reference positions at reference times, comprising:
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determining a current measurement packet at a current geographical position at a current time, wherein the current measurement packet comprises transmitter identifications of radio transmitters receivable at the current geographical position at the current time; selecting an amount of reference measurement packets exceeding a predetermined measure of correspondence to the current measurement packet, wherein the amount of selected reference measurement packets comprises a reference measurement packet or a plurality of reference measurement packets; storing transmitter identifications received prior to the current time and after a last update of the reference database in an amount of previously received radio transmitters; determining a transmitter identification comprised in the amount of the selected reference measurement packets and not comprised in the current measurement packet; and generating an experience message with respect to the determined transmitter identification, wherein the determined transmitter identification is stored in an amount of transmitter identifications to be potentially removed, when the determined transmitter identification is not stored in the amount of previously received radio transmitters.
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12. A computer program stored in a computer readable medium for performing the method for updating a reference database comprising reference measurement packets associated with geographical reference positions, which comprise reference transmitter identifications of radio transmitters receivable at the reference position at the reference times, determined at the respective geographical reference positions at reference times, the method comprising:
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determining a current measurement packet at a current geographical position at a current time, wherein the current measurement packet comprises transmitter identifications of radio transmitters receivable at the current geographical position at the current time; selecting an amount of reference measurement packets exceeding a predetermined measure of correspondence to the current measurement packet, wherein the amount of selected reference measurement packets comprises a reference measurement packet or a plurality of reference measurement packets; storing transmitter identifications received prior to the current time and after a last update of the reference database in an amount of previously received radio transmitters; determining a transmitter identification comprised in the amount of the selected reference measurement packets and not comprised in the current measurement packet; and generating an experience message with respect to the determined transmitter identification, wherein the determined transmitter identification is stored in an amount of transmitter identifications to be potentially removed, when the determined transmitter identification is not stored in the amount of previously received radio transmitters, when the computer program runs on a computer or microcontroller.
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Specification