Apparatus and method for alternative radiotelephone system selection
US5842122A · kind A · utility
49Cited by
23References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1993 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Jul 30, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A dual mode cellular cordless portable radiotelephone preferentially selects the cordless base station over the cellular system when in range of the cordless base station. When the cordless cellular portable is operating in the cellular mode, the radio channel associated with the cordless base station is sampled for a predetermined time. When a signal on the sampled cordless base station channel is detected, the cordless portable moves to the cordless mode and remains in the cordless mode for as long as the signal quality of the signal on the cordless base station channel exceeds a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.