Cellular verification and validation system
US5237612A · kind A · utility
208Cited by
15References
70Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1991 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Mar 29, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/72
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for the validation and verification of base stations and mobile stations within a cellular radio communications network. The system includes a fixed key and a changeable key which are applied as inputs to an authentication algorithm. The algorithm generates key-dependent responses, at least one of which is independent of the changeable key. The responses generated by a particular mobile station are compared to the responses generated by the network and the presence of fraudulent users may be detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.