Frequency allocation for subscribers of multiple telephone systems having frequency sharing
US5901357A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1993 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Sep 20, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A portable radiotelephone (101) cooperatively operates with a cordless base station (115) over the local coverage area using cellular frequency channels. Both the portable radiotelephone (101) and the cordless base station (115) scan the available channels to generate separate priority lists. The portable radiotelephone (101) and the cordless base station (115) categorize the available channels in its own priority list from best to worst. The priority list from both the portable radiotelephone (101) and the cordless base station (115) are combined to form a master priority list. The cordless telephone system then assigns the clearest available channel from the master priority list for use in the cordless telephone system. Thus, interference to and from the cellular system and other users of the cellular frequencies is minimized and the need for frequency planning is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.