Radio telephone channel selection
US6035201A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1997 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Jan 14, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/542
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A portable handset (7) in a radio cellular telephone system undergoes a channel scan routine to establish the identity of a base station (8a, 8b, 8c) producing the strongest valid signal at the handset. The routine (FIG. 3) involves detecting the signal strengths of all channels, ranking the channels in order of decreasing signal strengths and then checking the validity of each channel in the ranking order. This is likely to be quicker and to require less storage space than the conventional routine which involves saving channel number, signal strengths and validity of all channels, storing these details in a channel table and then selecting a valid channel with the strongest signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.