Intelligent roaming database (IRDB) updating
US6564055B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Sep 28, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W48/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A unique method and apparatus to dynamically maintain different Intelligent Roaming Database (IRDB) or Preferred Roaming Lists (PRL) in a mobile handset. In accordance with the principles of the present invention, the current location of the mobile device or other individualized aspect of the mobile device (e.g., class of service, time of day, etc.) is used to determine and select one of a plurality of different wireless carrier code lists (i.e., IRDBs or PRLs) for download to a particular mobile device. Individual IRDBs may be developed for each mobile device, providing a customized wireless carrier code list based on a type of subscription plan, etc. or other network or subscriber based feature. The described IRDB is of the same size as the current system IRDB (i.e., 82 carriers maximum, 166 bytes maximum), although a list of wireless carriers of any length is within the scope of the present invention. A location based IRDB is downloaded to a particular mobile device when the mobile device enters the location corresponding to that particular location based IRDB. When one of the many location based IRDBs are updated, only those mobiles in the relevant geographical region need have…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.