Hybrid call continuity for a wireless communication device
US9532276B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2015 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | May 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/00226
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless communication device (WCD) is configured to receive and maintain concurrently in data storage at least two different IMS transfer-addresses, such as one for use when the WCD's transition between radio access networks (RANs) is a single-radio transition and the other for use when the WCD's transition between RANs is a dual-radio transition, and/or one for use when the WCD's transition between RANs is packet-to-packet and the other for use when the WCD's transition between RANs is packet-to-circuit. Upon transitioning between RANs, the WCD may then select the appropriate one of these IMS transfer-addresses and transmit the selected IMS transfer-address to a network node to facilitate handover of an ongoing call to be via the WCD's new serving RAN.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.