Reporting Of Changes In Navigation Map Data For Navigation System
First Claim
1. A method for updating navigation map data, comprising receiving navigation map update data from a navigation unit using mobile communications, the navigation map update data being obtained bydetecting a position of a vehicle;
- calculating a route for the vehicle to a destination using the navigation map data;
detecting when the calculated route to the destination is left, and if so, starting storing of position data until;
the vehicle is back on the calculated route,the vehicle is on a recalculated route to the destination from an actual position, orthe vehicle has reached the destination, and evaluating the stored position data to obtain navigation map update data.
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Abstract
A method, navigation unit and map update server for updating navigation map data are disclosed. Navigation map update data is received from a navigation unit using mobile communications. The navigation map update data is obtained by detecting the position of a vehicle, calculating a route for the vehicle to a destination using the navigation map data and detecting when the calculated route to the destination is left. If so, the method begins storing position data until the vehicle is back on the calculated route, on a recalculated route to the destination from an actual position, or when it has reached the destination. Furthermore, the method comprises evaluating the stored position data to obtain navigation map update data. Navigation map update data is kept local for a geographically limited area corresponding to an area serviced by a network node in the cellular communication network.
40 Citations
15 Claims
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1. A method for updating navigation map data, comprising receiving navigation map update data from a navigation unit using mobile communications, the navigation map update data being obtained by
detecting a position of a vehicle; -
calculating a route for the vehicle to a destination using the navigation map data; detecting when the calculated route to the destination is left, and if so, starting storing of position data until; the vehicle is back on the calculated route, the vehicle is on a recalculated route to the destination from an actual position, or the vehicle has reached the destination, and evaluating the stored position data to obtain navigation map update data.
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2. A navigation unit arranged to communicate with a cellular communication network, the navigation unit comprising:
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a processor connected to a navigation device, a mobile communication unit and to a memory unit, the navigation device being arranged to detect an actual location of the navigation unit, the memory unit being arranged to store navigation map data, and the processor being arranged to; calculate a route to a destination using the navigation map data; detect when the calculated route to the destination is left, and if so, initialize a transmission of the detected position data to a navigation map server via the mobile communication unit. - View Dependent Claims (3, 4, 5, 6)
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7. A method for updating navigation map data, comprising:
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detecting an actual position; calculating a route for a vehicle to a destination using navigation map data; detecting when the calculated route to the destination is left, and if so, transmitting the detected position data to a navigation map server. - View Dependent Claims (8, 9)
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10. A navigation map server in communication with a network node associated with a group of cells of a cellular communication network, the navigation map server comprising:
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a memory unit for storing navigation map data, a map update service module being arranged to receive position data from a navigation unit via the cellular communication network, the position data comprising deviations from a calculated route, and an evaluation module in communication with the map update service module, the evaluation module being arranged to evaluate the position data to obtain navigation map update data for a geographically limited area associated with the group of cells. - View Dependent Claims (11, 12, 13, 14)
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15. A method for updating navigation map data, comprising:
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receiving via a network node associated with a group of cells of a cellular communication network position data from a navigation unit, storing the received position data, the stored position data comprising deviations from a calculated route, and evaluating the stored position data to obtain navigation map update data for a geographically limited area associated with the group of cells.
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Specification