Cellular system selection frequency scan scope for roaming
US10045287B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2017 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | May 11, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Apparatuses, systems, and methods for user equipment (UE) devices to perform more efficient frequency scans for potential base stations. According to techniques described herein, the UE may, in response to detecting that UE does not have cellular service, perform a full band scan to search for a last registered public land mobile network (PLMN) and the full band scan may discover one or more cells not associated with the last registered PLMN. The UE may populate a database with one or more parameters associated with the one or more cells and in response to not finding the last registered PLMN, perform a targeted scan limited to a set of PLMNs found during the full band scan. In some embodiments, each PLMN in the set of PLMNs may be comprised in a roaming PLMN list for an operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.