Packet-switched to circuit-switched handover during VOIP call initiation
US11792694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2020 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | May 29, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/305
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
When initiating a Voice-over-IP (VoIP) communication session between an originating device (MO) and a terminating device (MT) on a packet-switched network, network components associated with the MO may encounter a failure when preparing resources for the session, such as a failure to establish a dedicated bearer with the MO. This might typically cause the system to abort the session. Instead, the network components are configured to detect the failure and to initiate a handover to a circuit-switched communication network so that the session may be conducted through the circuit-switched communication network. The failure may be detected by a component of a Long-Term Evolution (LTE) Radio Access Network (RAN) of the network, by a Mobility Management Entity (MME) of the network, or by some other network component. Single Radio Voice Call Continuity (SRVCC) procedures may be used to implement the handover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.