Method and system employing wideband signals for RF wakeup
US8787840B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2006 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Mar 3, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of reducing an energy consumption of a wireless network, the method including periodically entering a sleep mode by a receiver node, broadcasting a signal simultaneously across a wide band frequency range, upon waking up from the sleep mode, listening by the receiver node to only a first narrow part of the wide band frequency range, the receiver node subsequently either returning to sleep if a signal strength of the broadcasted signal is less than a predefined signal strength threshold, or staying awake for an additional period of time if the signal strength of the broadcasted signal is greater than the predefined signal strength threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.