Detection of spoofed call information
US11095664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2017 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Jun 5, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mobile device receives an invitation to commence a media session. The invitation may be from a legitimate caller or from a spoofing caller. The mobile device checks parameters using templates to evaluate a consistency of the invitation with respect to a database in the mobile device. The templates include session protocol, network topology, routing, and social templates. Specific template data includes standardized protocol parameters, values from a database of the mobile device and phonebook entries of the mobile device. Examples of the parameters include capabilities, preconditions, vendor equipment identifiers, a hop counter value and originating network information. The originating network information may be obtained from the database by first querying an on-line database to determine a network identifier associated with caller identification information in the invitation. Then, the obtained carrier identifier is used as an index into a database to obtain template data characteristic of the identified originating network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.