Channel card for extending coverage area of base station
US6647266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | May 17, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W16/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
There is provided a channel card for extending the coverage area of a base station, which controls GPS reference signals provided to base station modems to extend the coverage area by up to four times a general base station coverage area. The channel card includes: a controller for generating control signals for extending the coverage area of the base station; a system clock distributor for dividing a GPS reference signal applied from a GPS clock receiver to generate a plurality of system clocks; a coverage area extending clock generator for converting the GPS reference signal supplied from the GPS clock receiver into a plurality of signals under the control of the controller, to generate clocks for extending the coverage area; a coverage area extending clock controller for selectively providing the plurality of coverage area extending clocks generated by the coverage area extending clock generator to first to fourth base station modems under the control of the controller; and the first to fourth base station modems which operate according to the coverage area controlling clocks provided by the extension clock controller and the system clocks generated by the system clock distribut…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.