Arrangement and method for selectable time/frequency division multiplex communication
US6269086A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1998 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Feb 27, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A cordless telephone provides extended operating range and battery life. In one embodiment, a time division duplex communications protocol is used when the measured signal strength or the signal quality between the handset and a corresponding base unit does not satisfy a known criteria, such as a predetermined threshold. The telephone is also configured to operate using a frequency division duplex communications protocol when the signal strength or signal quality between the handset and the base unit satisfies the known criteria. Other aspects of the invention are directed to measuring the received signal strength of the communications channel after initial communications is established, and selecting the communications protocol that is most advantageous in light of the measured signal strength and/or signal conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.