Method for deactivating and possibly reactivating SIM cards
US8306571B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 2009 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Nov 9, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/265
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
When deactivating a subscription and SIM card, the SIM card is connected to the ODA database, an instruction to deactivate the SIM card and cancel the subscription is transferred to the ODA, information in the memory of the SIM card including the IMSI (International Mobile Subscriber Identity) of the SIM card, is transferred to the ODA, which is arranged to be connected to the network, including a HLR/AUC. The ODA retrieves the subscription information, and replaces the IMSI of the SIM card with a temporary IMSI called IMSI-T. The ODA stores the information in the memory of the SIM card together with the IMSI-T in the database. The ODA also stores the information together with the IMSI-T and transfers to the network an instruction to cancel the subscription in the network. The SIM card may be reactivated using the information stored in the ODA database and on the SIM card including the IMSI-T.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.