Method for providing roaming services in which the home network uses S8HR model for out-bound roaming while the visited network uses LBO model for in-bound roaming
US9924344B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2017 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Jun 14, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A roaming method that enables the home network (HPMN) to use S8 Home Routed (S8HR) model for out-bound roaming while the visited network (VPMN) uses Local Breakout (LBO) model for in-bound roaming. An IMS Roaming Gateway (IR-GW) establishes an IMS bearer between the IR-GW and the home network's Packet Data Network Gateway (P-GW). The IR-GW replaces the source IP address on the SIP-Register message with the client IP address assigned to the UE by the HPMN P-GW. Upon receiving a SIP-Response message responsive to successful authentication of the UE with the HPMN, the IR-GW inserts its own IP address into the SIP-Response message and forwards it to the UE. IR-GW performs network address translation (NAT) between the source IP assigned to the UE by the VPMN and the client IP assigned to the UE by the HPMN.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.