System and method of detecting and preventing fraudulent telephone calls in a radio telecommunications network
First Claim
1. A method of detecting a fraudulent call origination in a radio telecommunications network having a subscriber'"'"'s home Home Location Register (HLR) for storing an activity status indication for the subscriber'"'"'s mobile station, and a serving Mobile Switching Center (MSC) in which said call origination is initiated, said method comprising the steps of:
- sending a reporting message from said serving MSC to said home HLR when a call is originated from said mobile station in said serving MSC;
determining whether said stored activity status indication is busy; and
determining that said call origination is fraudulent upon determining that said stored activity status indication is busy.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method for detecting a fraudulent call origination in a radio telecommunications network having a subscriber'"'"'s home Home Location Register (HLR) for storing a stored location for a mobile station, a serving Mobile Switching Center (MSC) in which the call origination is initiated, and a MSC-Location (MSC-L) covering the location for the mobile station stored in the home HLR. The serving MSC sends a reporting message to the home HLR when a call is originated from the mobile station in the serving MSC. The reporting message indicates a reported location for the mobile station. The home HLR then sends paging request messages to the serving MSC and the MSC-L requesting the serving MSC to page the mobile station in the reported location and requesting the MSC-L to page the mobile station in the stored location. Each MSC pages the mobile station and sends a paging result to the home HLR. The home HLR compares the stored location to the reported location, and analyzes the locations and the paging results to determine whether the call origination is fraudulent. If the call origination is determined to be fraudulent, the call is disconnected, and the mobile station is barred from originating calls until a proper personal identification number (PIN) code is entered.
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Citations
30 Claims
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1. A method of detecting a fraudulent call origination in a radio telecommunications network having a subscriber'"'"'s home Home Location Register (HLR) for storing an activity status indication for the subscriber'"'"'s mobile station, and a serving Mobile Switching Center (MSC) in which said call origination is initiated, said method comprising the steps of:
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sending a reporting message from said serving MSC to said home HLR when a call is originated from said mobile station in said serving MSC; determining whether said stored activity status indication is busy; and determining that said call origination is fraudulent upon determining that said stored activity status indication is busy. - View Dependent Claims (2, 3)
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4. A method of detecting a fraudulent call origination in a radio telecommunications network having a subscriber'"'"'s home Home Location Register (HLR) for storing a stored location for a mobile station, and a plurality of Mobile Switching Centers (MSCs) including a serving (MSC) in which said call origination is initiated, and a MSC-Location (MSC-L) covering the location for the mobile station stored in said subscriber'"'"'s home HLR, said method comprising the steps of:
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sending a reporting message from said serving MSC to said home HLR when a call is originated from said mobile station in said serving MSC, said reporting message indicating a reported location for said mobile station and including a called telephone number; comparing said stored location to said reported location; sending a paging request message from said home HLR to said MSC-L requesting said MSC-L to page said mobile station in said stored location when said stored location is different from said reported location; paging said mobile station in said stored location; sending a paging result from said MSC-L to said home HLR; sending a paging request message from said home HLR to said serving MSC requesting said serving MSC to page said mobile station in said reported location; paging said mobile station in said reported location; sending a paging result from said serving MSC to said home HLR; and analyzing said stored location and said reported location, and said paging results from said serving MSC and said MSC-L to determine whether said call origination is fraudulent. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. A method of detecting a fraudulent call origination in a radio telecommunications network having a subscriber'"'"'s home Home Location Register (HLR) for storing a stored location for a mobile station, and a serving Mobile Switching Center (MSC) in which said call origination is initiated, said method comprising the steps of:
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sending a reporting message from said serving MSC to said home HLR when a call is originated from said mobile station in said serving MSC, said reporting message indicating a reported location for said mobile station and including a called telephone number; comparing said stored location to said reported location; sending a paging request message from said home HLR to said serving MSC requesting said serving MSC to page said mobile station in said stored location when said stored location is identical to said reported location; paging said mobile station in said stored location; sending a paging result from said serving MSC to said home HLR; and analyzing said stored location and said reported location, and said paging result from said serving MSC to determine whether said call origination is fraudulent. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A system for detecting a fraudulent call origination in a radio telecommunications network having a subscriber'"'"'s home Home Location Register (HLR) for storing an activity status indication for the subscriber'"'"'s mobile station, and a serving Mobile Switching Center (MSC) in which said call origination is initiated, said system comprising:
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a reporting means for sending a reporting message from said serving MSC to said home HLR when a call is originated from said mobile station in said serving MSC; means within said home HLR for determining whether said stored activity status indication is busy; and means within said home HLR for determining that said call origination is fraudulent upon determining that said stored activity status indication is busy. - View Dependent Claims (20, 21)
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22. A system for detecting a fraudulent call origination from a mobile station in a radio telecommunications network having a plurality of Mobile Switching Centers (MSCs) and a subscriber'"'"'s home Home Location Register (HLR) which stores a stored location for said mobile station, said system comprising:
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a serving Mobile Switching Center (MSC) in which said call origination is initiated, said serving MSC including; means for sending a reporting message from said serving MSC to said home HLR when a call is originated from said mobile station in said serving MSC, said reporting message indicating a reported location for said mobile station; and means for sending a paging result from said serving MSC to said home HLR; means within said home HLR for comparing said stored location to said reported location; a MSC-Location (MSC-L) providing radio coverage for the location for the mobile station stored in said home HLR, said MSC-L including; means for paging said mobile station in said stored location; and means for sending a paging result from said MSC-L to said home HLR; means within said home HLR for sending a paging request message to said MSC-L to page said mobile station in said stored location; means within said home HLR for sending a paging request message to said serving MSC to page said mobile station in said reported location; and means within said home HLR for analyzing said stored location and said reported location, and said paging results from said MSC-L and said serving MSC to determine whether said call origination is fraudulent. - View Dependent Claims (23, 24, 25, 26)
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27. A system for detecting a fraudulent call origination from a mobile station in a radio telecommunications network having a plurality of Mobile Switching Centers (MSCs) and a subscriber'"'"'s home Home Location Register (HLR) which stores a stored location for said mobile station, said system comprising:
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a serving Mobile Switching Center (MSC) in which said call origination is initiated, said serving MSC including; means for sending a reporting message from said serving MSC to said home HLR when a call is originated from said mobile station in said serving MSC, said reporting message indicating a reported location for said mobile station; and means for sending a paging result from said serving MSC to said home HLR; means within said home HLR for comparing said stored location to said reported location; means within said home HLR for sending a paging request message to said serving MSC to page said mobile station in said reported location when said stored location is identical to said reported location; and means within said home HLR for analyzing said stored location and said reported location, and said paging result from said serving MSC to determine whether said call origination is fraudulent. - View Dependent Claims (28, 29, 30)
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Specification