Anti-inbound traffic redirection system
First Claim
1. A method for countering an inbound traffic redirection (ITR) attempt for an inbound roaming mobile station, wherein the ITR attempt is initiated by a first Visiting Public Mobile Network (VPMN), the method comprising:
- detecting, at a second VPMN, the ITR attempt by observing receipt of one or more registration response messages at the second VPMN from an HPMN of the inbound roaming mobile station during an ongoing location update transaction of the inbound roaming mobile station between the second VPMN and the HPMN; and
thwarting, via the second VPMN, the detected ITR attempt.
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Accused Products
Abstract
A system for countering an inbound traffic redirection (ITR) attempt for an inbound roaming mobile station is provided. The ITR attempt is initiated by a first Visiting Public Mobile Network (VPMN). The system includes a TR probe for detecting an ITR attempt by observing receipt of one or more registration response messages at a second VPMN from the HPMN during an ongoing location update transaction of the inbound roaming mobile station between the second VPMN and the HPMN. The system further includes a countering unit for thwarting the ITR attempt by sending one or more location update (LU) messages from the second VPMN in response to at least one registration response messages message received from a switch.
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Citations
33 Claims
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1. A method for countering an inbound traffic redirection (ITR) attempt for an inbound roaming mobile station, wherein the ITR attempt is initiated by a first Visiting Public Mobile Network (VPMN), the method comprising:
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detecting, at a second VPMN, the ITR attempt by observing receipt of one or more registration response messages at the second VPMN from an HPMN of the inbound roaming mobile station during an ongoing location update transaction of the inbound roaming mobile station between the second VPMN and the HPMN; and thwarting, via the second VPMN, the detected ITR attempt. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. A method for countering an inbound traffic redirection (ITR) attempt for an inbound roaming mobile station, wherein the ITR attempt is initiated by a first Visiting Public Mobile Network (VPMN), the method comprising:
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tracking the receipt of one or more registration response messages at a second VPMN from an HPMN of the inbound roaming mobile station, during an ongoing location update transaction of the inbound roaming mobile station between the second VPMN and the HPMN; identifying the ITR attempt by comparing a known registration response message with the received one or more registration response messages, wherein the known registration response message may be used by the HPMN for traffic redirection; and thwarting the identified ITR attempt. - View Dependent Claims (13, 14, 15)
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16. A system for countering an inbound traffic redirection (ITR) attempt for an inbound roaming mobile station, wherein the ITR attempt is initiated by a first Visiting Public Mobile Network (VPMN), the system comprising:
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a TR probe for detecting, at a second VPMN, the ITR attempt by observing receipt of one or more registration response messages at second VPMN from an HPMN of the inbound roaming mobile station during an ongoing location update transaction of the inbound roaming mobile station between the second VPMN and the HPMN; and countering unit for thwarting, via the second VPMN, the ITR attempt by sending one or more location update (LU) messages from the second VPMN in response to at least one registration response message received from a switch. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A computer program product comprising a computer useable medium including a computer usable program code for countering an inbound traffic redirection (ITR) attempt for an inbound roaming mobile station, wherein the ITR attempt is initiated by a first Visiting Public Mobile Network (VPMN), the computer program product comprising:
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computer usable program code for detecting, at a second VPMN, the ITR attempt by observing receipt of one or more registration response messages at the second VPMN from an HPMN of the inbound roaming mobile station during an ongoing location update transaction of the inbound roaming mobile station between the second VPMN and the HPMN; and computer usable program code for thwarting, via the second VPMN, the detected ITR attempt. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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Specification