Method for automatic and seamless call transfers between a licensed wireless system and an unlicensed wireless system
US7890099B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2002 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Mar 15, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of integrating a licensed wireless system and an unlicensed wireless system includes establishing a communication session through a landline. The communication session is linked to a subscriber device through an unlicensed wireless system servicing an unlicensed wireless system service area. An indication is received that the subscriber device is moving from the unlicensed wireless system service area into a licensed wireless system service area. Without disrupting the communication session, the communication session is automatically transitioned from the unlicensed wireless system to a licensed wireless system servicing the licensed wireless system service area. Similarly, a call initiated on the licensed wireless system is automatically transitioned to the unlicensed wireless system when the subscriber device enters the unlicensed wireless system service area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.