Method and system using a conference bridge for handoff of a multi-mode mobile station
US7466991B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2005 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Feb 3, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-mode mobile station includes a first interface for wireless communication with a wireless local area network (WLAN) and a second interface for wireless communication with a wireless wide area network (WWAN). The multi-mode mobile station is associated with a particular conference bridge, through which all calls to and from the multi-mode mobile station are routed. For example, when a call involving the multi-mode mobile is established via the WLAN, the call includes a WLAN call leg that extends from the conference bridge to the multi-mode mobile station via the WLAN. To effect a handoff during the call, a WWAN call leg is established between the multi-mode mobile station and the conference bridge via the WWAN. The conference bridge bridges the WLAN and WWAN call legs. To complete the handoff, the multi-mode mobile station drops the WLAN call leg and continues the call using the WWAN call leg.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.