Prevention of alteration of location information for mobile-based location calculation
First Claim
1. A mobile terminal for minimizing fraudulent calculations of the location of said mobile terminal within a cellular network, comprising:
- a positioning measurement module for obtaining positioning information associated with the location of said mobile terminal; and
a smart card having a location calculation module and topological information stored therein, said positioning measurement module not being within said smart card, said location calculation module being operatively connected to said positioning measurement module for calculation of location information for said mobile terminal within said cellular network using said positioning information provided by said positioning measurement module and said topological information.
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Accused Products
Abstract
A telecommunications system and method is disclosed for minimizing the chances of a mobile subscriber altering the calculated location of an associated mobile terminal when the positioning measurements and location calculation are performed by the mobile terminal. In order to prevent tampering with the location information, the Positioning Measurement Module (PMM) can be separated from the Location Calculation Module (LCM) by including both the LCM and topological information used for calculation of the location of the mobile terminal on a smart integrated circuit (IC) card within the mobile terminal. When the PMM obtains positioning measurement information, this positioning information is encrypted and sent to the LCM within the smart card, which then deciphers the encrypted information and uses the positioning information and stored topological information to calculate the location of the mobile terminal.
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Citations
37 Claims
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1. A mobile terminal for minimizing fraudulent calculations of the location of said mobile terminal within a cellular network, comprising:
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a positioning measurement module for obtaining positioning information associated with the location of said mobile terminal; and
a smart card having a location calculation module and topological information stored therein, said positioning measurement module not being within said smart card, said location calculation module being operatively connected to said positioning measurement module for calculation of location information for said mobile terminal within said cellular network using said positioning information provided by said positioning measurement module and said topological information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A telecommunications system for minimizing fraudulent calculations by mobile terminals of the location of said mobile terminals within a cellular network, said telecommunications system comprising:
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at least one base station within said cellular network; and
a given one of said mobile terminals in wireless communication with said base station, said given mobile terminal having;
a positioning measurement module for obtaining positioning information associated with the location of said given mobile terminal, and a smart card having a location calculation module and topological information stored therein, said positioning measurement module not being within said smart card, said location calculation module being operatively connected to said positioning measurement module for calculation of location information for said mobile terminal within said cellular network using said positioning information provided by said positioning measurement module and said topological information. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for minimizing fraudulent calculations by a mobile terminal of the location of said mobile terminal within a cellular network, said method comprising the steps of:
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storing topological information within a smart card within said mobile terminal;
obtaining positioning information associated with the location of said mobile terminal using a positioning measurement module within said mobile terminal;
sending said positioning information to a location calculation module within said smart card, said positioning measurement module not being within said smart card; and
calculating location information for said mobile terminal within said cellular network using said positioning information and said topological information by said location calculation module. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
encrypting, by said positioning measurement module, said positioning information before said step of sending said encrypted positioning information to said location calculation module.
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31. The method of claim 29, further comprising the step of:
deciphering, by said location calculation module, said positioning information.
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32. The method of claim 29, wherein said step of storing further comprises the step of storing said topological information within a memory in said smart card, said memory being connected to said location calculation module.
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33. The method of claim 29, further comprising the step of:
receiving network information from said cellular network using a transceiver unit, said step of obtaining further comprising the step of obtaining said positioning information using said network information and an algorithm stored within said positioning measurement module.
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34. The method of claim 33, further comprising the step of:
transmitting, by said transceiver unit, said location information to a location application within said cellular network via said cellular network.
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35. The method of claim 34, further comprising the steps of:
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encrypting, by said location calculation module, said location information using a ciphering algorithm; and
sending said encrypted location information to said transceiver unit.
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36. The method of claim 35, further comprising the step of:
calculating, by said ciphering algorithm, a time-differentiating deciphering key recognizable by said cellular network, said step of transmitting further comprising the steps of;
deciphering, by said cellular network, said encrypted location information using said time-differentiating deciphering key, and sending said deciphered location information from said cellular network to said location application within said cellular network.
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37. The method of claim 29, further comprising the step of:
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encrypting, by said location calculation module, said location information; and
sending said encrypted location information to an internal location application within said smart card.
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Specification