Cellular fraud prevention using selective roaming
First Claim
Patent Images
1. A method for preventing roaming fraud in a cellular telephone system, comprising the steps of:
- (a) receiving a request to authorize a call attempt by a cellular phone in a foreign service area;
(b) determining whether the call attempt by the cellular phone exceeds a roaming privilege of the cellular phone, the determining step comprising the step of checking a database stored in a data storage device to determine the roaming privilege of the cellular phone, the database comprising a Home Locator Register (HLR) for storing roaming information for subscribers of the home service area;
(c) authenticating the cellular phone using secondary identification data when the call attempt exceeds the roaming privilege for the cellular phone; and
(d) authorizing the call attempt by the cellular phone in the foreign service area when a proper response is provided by the cellular phone at the authenticating step.
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Accused Products
Abstract
A method of preventing roaming fraud in cellular telephone systems using different levels of roaming privileges for individual subscribers. When the subscriber initiates a call in a foreign service area that exceeds their roaming privileges, an authentication method is used to verify the identity of the roaming subscriber.
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Citations
31 Claims
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1. A method for preventing roaming fraud in a cellular telephone system, comprising the steps of:
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(a) receiving a request to authorize a call attempt by a cellular phone in a foreign service area; (b) determining whether the call attempt by the cellular phone exceeds a roaming privilege of the cellular phone, the determining step comprising the step of checking a database stored in a data storage device to determine the roaming privilege of the cellular phone, the database comprising a Home Locator Register (HLR) for storing roaming information for subscribers of the home service area; (c) authenticating the cellular phone using secondary identification data when the call attempt exceeds the roaming privilege for the cellular phone; and (d) authorizing the call attempt by the cellular phone in the foreign service area when a proper response is provided by the cellular phone at the authenticating step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for preventing roaming fraud in a cellular telephone system comprising the steps of:
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(a) receiving a request to authorize a call attempt by a cellular phone in a home service area; (b) determining whether the call attempt by the cellular phone exceeds a roaming privilege of the cellular phone, the determining step comprising the step of checking a database stored in a data storage device to determine the roaming privilege of the cellular phone, the database comprising a Visitor Locator Register (VLR) for storing roaming information for subscribers of a foreign service area that are currently roaming in the home service area; (c) authenticating the cellular phone using secondary identification data when the call attempt exceeds the roaming privilege for the cellular phone; and (d) authorizing the call attempt by the cellular phone in the home service area when a proper response is provided by the cellular phone at the authenticating step. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An apparatus for preventing roaming fraud in a cellular telephone system, comprising:
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(a) means for receiving a request to authorize a call attempt by a cellular phone, comprising means for authorizing the call attempt by the cellular phone in a foreign service area; (b) means for determining whether the call attempt by the cellular phone exceeds a roaming privilege of the cellular phone, comprising means for checking a database stored in a data storage device to determine the roaming privilege of the cellular phone, the database comprising a Home Locator Register (HLR) for storing roaming information for subscribers of the home service area; (c) means for authenticating the cellular phone using secondary identification data when the call attempt exceeds the roaming privilege for the cellular phone; and (d) means for authorizing the call attempt by the cellular phone in the foreign service area when a proper response is provided by the cellular phone. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A program storage device readable by a computer and tangibly embodying a program of instructions executable by the computer to perform method steps for preventing roaming fraud in a cellular telephone system, the method comprising the steps of:
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(a) receiving a request to authorize a call attempt by a cellular phone, comprising the step of authorizing the call attempt by the cellular phone in a foreign service area; (b) determining whether the call attempt by the cellular phone exceeds a roaming privilege of the cellular phone, the determining step comprising the step of checking a database stored in a data storage device to determine the roaming privilege of the cellular phone, the database comprising a Home Locator Register (HLR) for storing roaming information for subscribers of the home service area; (c) authenticating the cellular phone using secondary identification data when the call attempt exceeds the roaming privilege for the cellular phone; and (d) authorizing the call attempt by the cellular phone in the foreign service area when a proper response is provided by the cellular phone at the authenticating step. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification