CDMA/multimode VoLTE device with reduced time to camp
US9763153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2015 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Sep 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/183
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A user equipment (UE) may camp on a network following a SIM bootup. Specifically, the UE may determine that a SIM implementation module of the UE includes a first SIM application (e.g., USIM) associated with a first cellular radio access technology (RAT) (e.g., LTE) and a second SIM application (e.g., CSIM) associated with a second cellular RAT (e.g., CDMA). The UE may then initialize the first SIM application and the second SIM application. The UE may determine whether the network is configured to support both voice and data communications using the first cellular RAT. If so, the UE may initiate camping on the network with the first cellular RAT in response to determining that the first SIM application is ready, but before the second SIM application is ready. If not, the UE may wait until both the first and second SIM applications are ready before initiating camping on the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.