System and method for performing hand-offs between internet protocol (IP) core networks in the wireless domain
US6961774B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2001 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Oct 15, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for performing a hand-off between two IP core networks in the wireless domain includes a source mobility control function (MCF) within a source IP core network that is coupled to a source access network providing service to a mobile unit. The source MCF is coupled to a source bearer path gateway (BPGW) within the source IP core network. The source BPGW communicates bearer traffic associated with the mobile unit between the source access network and a public switched telephone network (PSTN) gateway within the source IP core network. The PSTN gateway communicates the bearer traffic between the source BPGW and a PSTN coupled to the source IP core network. The source MCF is functionally separate from a call agent (CA) within the source IP core network. The CA is also coupled to the source BPGW. The CA sets up a first segment of a bearer path for the bearer traffic between the source BPGW and the PSTN gateway, and the source MCF sets up a second segment of the bearer path for the bearer traffic between the source access network and the source BPGW. A hand-off occurs between the source IP core network and the target IP core network in the wireless domain when the source MCF tak…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.