Preempt single radio voice call continuity by moving to voice over WiFi to improve voice/video call quality
US11317333B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2020 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Jul 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A configuration is disclosed to enable a UE to preempt SRVCC by triggering a handover to a Wi-Fi network. The apparatus determines whether a Wi-Fi cell is viable as a first target cell, from a plurality of target cells, serving the UE to continue the active transmission on the Wi-Fi cell. The apparatus extends a TTT timer length based at least in part on the determination that the Wi-Fi cell is viable as the target cell serving the UE to continue the active transmission on the Wi-Fi cell. The apparatus initiates a handover to the Wi-Fi cell from the first network prior to the expiration of a TTT timer and prior to the first network initiating a handover to a second target cell, from the plurality of target cells, on a second network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.