Method to provision a subscription in a constrained device
US12368587B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2021 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Sep 21, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/35
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The disclosure proposes a method for switching from a first subscription of a first telecommunication network operator to a second subscription of a second telecommunication network operator on a plurality of smart cards, the method comprising, for each smart card pre-provisioning the smart card with a batch of secret keys at the level of a personalization factory; thanks to a first input file transmitted by the first telecommunication network operator to the personalization factory, generating at the personalization factory an output file comprising a first secret key selected in the batch, a corresponding first IMSI and a first ciphered operator code; transmitting the output file to the first telecommunication network operator; and transmitting OTA keys and the first IMSI to an OTA server of a service provider managing the smart card in order to attach the smart card to the first telecommunication network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.