Method and apparatus for operating a radiotelephone in an extended stand-by mode of operation for conserving battery power
US5471655A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1993 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Dec 3, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention provides a method, and apparatus for performing the method, for reducing the power consumption of a radiotelephone. The method includes the steps of (a) receiving with a receiver of a radiotelephone at least a Word Synchronization pattern from a frame that is transmitted over a control channel; (b) receiving a first repeat of a control message that follows the Word Synchronization pattern within the frame; and (c) determining if the first repeat was correctly received. If the first repeat was correctly received, the method includes a further step of (d) determining if at least one reception-related criteria is met. If the reception-related criteria is determined to be met, the method includes a further step of (e) selectively removing operating power from one or more portions of the radiotelephone receiver for a predetermined time period during a remainder of the frame. The at least one reception-related criteria is a Message Error Rate (MER) that indicates a number of correctly received frames out of a total number of n last received frames. The reception-related criteria may also include a difference between a minimum Received Signal Strength Indicator (RSSI) value…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.