Interworking and interoperability of GPRS systems with systems of other technology families
US6912389B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2001 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Mar 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A GPRS interworking and interoperability function (IIF) is interposed between a serving GSM/GPRS wireless system and a second wireless system of a different technology family to allow a mobile station homed to the second wireless system to operate in the GSM/GPRS system. The IIF executes or emulates the behavior of a GPRS HLR when communicating with the GSM/GPRS system, and executes or emulates the behavior of an MSC/VLR of the home system technology family when communicating with the home system. When a mobile station registers in the serving system, the MSC/VLR portion of the IIF transmits a registration notification message to the home system HLR specifying the address of an associated SGSN as though it were an MSC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.