The present invention faces the issue of UE enabled to communicate with an IP Multimedia
Subsystem following protocol versions older than Release 9, and provides for an alternative …

The present disclosure relates to the field of communication technology, and provides an
information processing method, an information processing device, a computer-readable …

Embodiments provide a service request processing method, a related device, and a
communications system in an IMS network. In some embodiments, because 5GC network …

A method, a related apparatus, and a system for recovering a called service of a terminal are
provided. The method includes: when a called request of a user terminal is received …

A voice service registration method and a digital terminal, relate to the communications field
and applied to a voice service registration process, where the method and the terminal are …

A method, a related apparatus, and a system for recovering a called service of a terminal are
provided. The method includes: when a called request of a user terminal is received …

2022-01-11 Assigned to T-MOBILE USA, INC. reassignment T-MOBILE USA, INC.
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors …

Solutions for providing a data traffic session with proxy-call session control function (P-
CSCF) restoration include: receiving an indication, by an application server (AS), that a user …

2023-03-02 Assigned to HUAWEI TECHNOLOGIES CO., LTD. reassignment HUAWEI
TECHNOLOGIES CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT …