System search for full service while on a cell with limited service
US9398520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2007 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Dec 25, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W68/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques for performing system searches to find a suitable cell to receive full service while camped on a cell with limited service are described. Initially, a user equipment (UE) may camp on a first cell and receive limited service. The UE may perform a system search in background to find a suitable cell to receive full service. By performing the system search in background, the UE can receive paging messages and perform cell reselection and/or other tasks while the system search is pending and may also be able to obtain limited service with little or no delay when requested by a user. The UE may suspend the system search prior to each paging occasion, receive paging messages applicable for the UE, and then resume the system search. The UE may receive a request for limited service (e.g., emergency call), suspend or abort the system search, and obtain the requested limited service.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.