Apparatus and method for determining a current position of a mobile device
First Claim
1. An apparatus for determining the current position of a mobile device in an environment in which at least one transmitter is disposed, comprising:
- a provider for providing a cartographic map of the environment, the cartographic map including field strength reference values at reference points;
a determinator for determining a field strength value;
an identifier for deriving reference points within reach that can be reached starting from a previous position of the mobile device by movement of the mobile device in the environment within a predetermined time interval, from the cartographic map of the environment; and
a comparator for comparing the field strength value with the field strength reference values at the reference points within reach,wherein the reference point the field strength reference value of which most likely corresponds to the field strength value is established as current position.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for determining a current position of a mobile device in an environment in which at least one transmitter is disposed includes a means for providing a cartographic map of the environment, the cartographic map including field strength reference values at reference points, a means for determining a field strength value, a means for deriving a reference point within reach that can be reached starting from a previous position of the mobile device by movement of the mobile device in the environment within a predetermined time interval, from the cartographic map of the environment, and a comparator for comparing the field strength value with a field strength reference value at the reference point within reach in order to determine the current position. By including the cartographic map of the environment, the position determination is simplified.
-
Citations
13 Claims
-
1. An apparatus for determining the current position of a mobile device in an environment in which at least one transmitter is disposed, comprising:
-
a provider for providing a cartographic map of the environment, the cartographic map including field strength reference values at reference points; a determinator for determining a field strength value; an identifier for deriving reference points within reach that can be reached starting from a previous position of the mobile device by movement of the mobile device in the environment within a predetermined time interval, from the cartographic map of the environment; and a comparator for comparing the field strength value with the field strength reference values at the reference points within reach, wherein the reference point the field strength reference value of which most likely corresponds to the field strength value is established as current position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method for determining a current position of a mobile device within an environment in which at least one transmitter is disposed, comprising:
-
providing a cartographic map of the environment, the cartographic map of the environment including field strength reference values at reference points; determining a field strength value at the current position; deriving reference points within reach that can be reached starting from a previous position of the mobile terminal by movement of the mobile terminal in the environment within a predetermined time interval, from the cartographic map of the environment; and comparing the field strength value to the field strength reference values at the reference points within reach, characterized by the step of establishing the reference point the field strength reference value of which most likely corresponds to the field strength value as current position, wherein the method is performed in a hardware apparatus.
-
-
13. A computer readable medium with a program code for performing, when the program is executed on a computer, a method for determining a current position of a mobile device within an environment in which at least one transmitter is disposed, comprising:
-
providing a cartographic map of the environment, the cartographic map of the environment including field strength reference values at reference points; determining a field strength value at the current position; deriving reference points within reach that can be reached starting from a previous position of the mobile terminal by movement of the mobile terminal in the environment within a predetermined time interval, from the cartographic map of the environment; and comparing the field strength value to the field strength reference values at the reference points within reach, characterized by the step of establishing the reference point the field strength reference value of which most likely corresponds to the field strength value as current position.
-
Specification