Apparatus and method of a mobile terminating user equipment connecting to a fallback network
US12426117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2023 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Mar 30, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W68/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus for wireless communication of a user equipment (UE) is disclosed. The apparatus may include a memory and at least one processor coupled to the memory. The at least one processor may be configured to receive a paging signal associated with an mobile terminating (MT) internet protocol (IP) multimedia subsystem (IMS) voice session. The at least one processor may be further configured to send a session initiation protocol (SIP) message in response to the paging signal. The at least one processor may be further configured to receive a second SIP message indicating SIP failure. The at least one processor may be further configured to determine whether the second SIP message indicates a network failure or a global failure. The at least one processor may be further configured to establish a connection with a different RAT network when the second SIP message indicates a network failure or a global failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.