Controlling a power state of a cellular packet data subsystem in a portable electronic device
US9451551B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2013 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Oct 24, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system are described for use in a portable electronic device that includes a wireless local area network (WLAN) subsystem, a cellular packet data subsystem for communicating packet data, a cellular voice subsystem for communicating cellular voice information, and a processing subsystem. In the described embodiments, the WLAN subsystem establishes a connection to a WLAN and the WLAN subsystem then determines the signal strength of the connection to the WLAN. Then, on condition that the signal strength exceeds a threshold, the processing subsystem selects the WLAN subsystem for the communication of packet data to and from the portable electronic device, and puts the cellular packet data subsystem into a reduced power state that reduces the power consumption of the cellular packet data subsystem. Packet data is then communicated to and from the portable electronic device using the WLAN subsystem while the cellular data subsystem is in the reduced power state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.