USIM management device and industrial communication terminal
US11051148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2020 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Nov 2, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A universal subscriber identity module (USIM) management device includes a communication interface, a storage configured to store an issue date indicating a date on which a USIM is installed into an industrial communication terminal, and an operation processor. The operation processor is configured to execute: (a) receiving the issue date from at least one among the industrial communication terminal and a subscriber management system in a mobile communication network to which the industrial communication terminal is connected, and storing the received issue date in the storage; (b) receiving USIM usage information from the industrial communication terminal through the communication interface; and (c) determining whether to replace the USIM based on the issue date and the USIM usage information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.