System and method of supporting one number in SRVCC

摘要

Provided are a system and method for supporting one number in SRVCC. The system for supporting one number in SRVCC of the disclosure comprises: an IMS network, a CS network, a first terminal device and a second terminal device, wherein the first terminal device is used for establishing a session between the IMS network and the second terminal device using a subscriber number, and is also used for establishing a session between the CS network and the second terminal device using the subscriber number when being switched from the IMS network to the CS network while it is a calling party. The method can support an SRVCC system to establish sessions among different networks using the same number during domain switching, improve the operating efficiency of the SRVCC system, and facilitate the use by users.

主权项

1. A method of supporting one number in Single Radio Voice Call Continuity (SRVCC), comprising:
setting up in an Internet Protocol Multimedia Subsystem (IMS) network, by a first terminal equipment using a subscriber number, a conversation with a second terminal equipment; and setting up in a Circuit Switched (CS) network, by the first terminal equipment using the subscriber number, a conversation with the second terminal equipment, when the first terminal equipment serves as a calling party and performs a handover from the IMS network to the CS network.