System and method for locating a cellular service
US7184788B1 · kind B1 · utility
5Cited by
13References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2000 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Apr 14, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W48/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for determining whether a particular service is provided by a cellular service provider comprising: listening for a page which includes a particular number plan area code (“NPA”) in a first frequency block; if the page is not heard in the first frequency block within a specified time period, listening for a page in a second frequency block which includes the particular NPA; and determining that the service is provided in the frequency block in which the page is sensed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.