Method and apparatus for preventing radio communication system access by an unauthorized modem
US7325250B1 · kind B1 · utility
13Cited by
10References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2001 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Sep 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for preventing radio communication system access by an unauthorized modem. The apparatus comprises a signal detector that determines if an authorization signal has been received from the base station within a specified period of time. The authorization signal authorizes the apparatus to communicate with the base station. A transmitter transmits information to the base station, and a controller disables the transmitter of the apparatus providing that the authorization signal has not been received within the specified period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.