Method and system for restricting mobility using unique encrypted chargers
First Claim
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1. A method for enabling a mobile apparatus for call processing, the method comprising:
- encrypting a random number at the mobile apparatus;
sending the random number from the mobile apparatus to a charging apparatus;
encrypting the random number at the charging apparatus;
receiving at the mobile apparatus the encrypted random number from the charging apparatus; and
restricting mobility of the mobile apparatus by enabling the mobile apparatus based on a comparison of the encrypted random number at the mobile apparatus with the encrypted random number received from the charging apparatus.
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Abstract
A method and system for disabling a mobile unit to handle a call processing function, after being away from its charging unit longer than a predetermined time period, allows a service provider to limit the mobility of the mobile unit with respect to its companion charging unit. Consequently, the service provider may limit the mobility of the mobile unit in a limited area, such as in a wireless local loop.
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Citations
13 Claims
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1. A method for enabling a mobile apparatus for call processing, the method comprising:
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encrypting a random number at the mobile apparatus;
sending the random number from the mobile apparatus to a charging apparatus;
encrypting the random number at the charging apparatus;
receiving at the mobile apparatus the encrypted random number from the charging apparatus; and
restricting mobility of the mobile apparatus by enabling the mobile apparatus based on a comparison of the encrypted random number at the mobile apparatus with the encrypted random number received from the charging apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mobile apparatus comprising:
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means for generating a random number;
means for encrypting the random number;
means for sending the random number to a charging apparatus;
means for receiving an encrypted version of the random number from the charging apparatus; and
means for restricting mobility of the mobile apparatus by comparing the encrypted random number at the mobile apparatus with the encrypted version of the random number received from the charging apparatus.
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10. A mobile apparatus comprising:
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a processor configured to generate a random number, the processor also configured to encrypt the random number;
a transmitter configured to send the random number to a charging unit; and
a receiver configured to receive an encrypted version of the random number from the charging unit, wherein the processor is also configured to restrict mobility of the mobile apparatus by enabling the mobile apparatus based on the encrypted random number in the mobile unit and the encrypted random number received from the charging unit.
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11. A charging apparatus comprising:
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means for receiving a random number from a mobile apparatus;
means for generating a second random number based on the received random number;
means for encrypting the second random number; and
means for sending the encrpyted second random number to the mobile unit.
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12. A charging apparatus comprising:
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a receiver configured to receive a random number from a mobile apparatus;
a processor configured to encrypt a second random number, wherein the second random number is generated based on the received random number; and
a transmitter configured to send the encrypted second random number to the mobile apparatus.
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13. A computer readable medium embodying a method for enabling a mobile apparatus for call processing, the method comprising:
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encrypting a random number at the mobile apparatus;
sending the random number from the mobile apparatus to a charging apparatus;
encrypting the random number at the charging apparatus;
receiving at the mobile apparatus the encrypted random number from the charging apparatus; and
restricting mobility of the mobile apparatus by enabling the mobile apparatus based on a comparison of the encrypted random number at the mobile apparatus with the encrypted random number received from the charging apparatus.
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Specification