SIM information based SIM validation
US8825009B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Feb 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/183
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for operating a RF communication device, a RF communication device (400), a method for operating an authentication server of a network entity and to corresponding computer programs. All aspects of the present invention take into account that a continuous operation of a RF communication device, in particular of a metering application, needs to be ensured, even if the function of a component SIM or initial SIM (410) has to be replaced or supplemented by an external new SIM (420). It is suggested to ascertain the validity of the external SIM by using information stored in the component/initial SIM. The validity of the external SIM can be ascertaining either solely on the side of the RF communication device or by sending a corresponding validity check request signal to a remote network entity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.