Method and apparatus for improving service efficiency in wireless communication system
First Claim
Patent Images
1. A method for providing a voice over IP multimedia subsystem (IMS VoPS) by a terminal in a mobile communication system, the method comprising:
- initiating a voice call based on the IMS VoPS;
transmitting a tracking area update request message if entering a tracking area that is not registered;
receiving from a network a first tracking area update accept message including network support information indicating whether the network supports the IMS VoPS;
identifying that a bearer associated with the voice call is released;
transmitting a combined tracking area update request message;
receiving from the network a second tracking area update accept message including a network update result indicating tracking area (TA) updated; and
attempting to select a GSM edge radio access network (GERAN) or a UMTS terrestrial radio access network (UTRAN) and disabling an evolved UTRAN (E-UTRAN) function, based on the network support information and the network update result indicating TA updated.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed are a method and an apparatus for selecting a domain for a voice call in a mobile communication network. A terminal, which uses VoLTE, receives, from a network, identification information indicating whether IMS Voice over PS (IMS VoPS) is supported, determines whether the network supports IMS VoPS and determines a domain (PS or CS) to which a voice service will be provided through the network according to the determination result.
13 Citations
12 Claims
-
1. A method for providing a voice over IP multimedia subsystem (IMS VoPS) by a terminal in a mobile communication system, the method comprising:
-
initiating a voice call based on the IMS VoPS; transmitting a tracking area update request message if entering a tracking area that is not registered; receiving from a network a first tracking area update accept message including network support information indicating whether the network supports the IMS VoPS; identifying that a bearer associated with the voice call is released; transmitting a combined tracking area update request message; receiving from the network a second tracking area update accept message including a network update result indicating tracking area (TA) updated; and attempting to select a GSM edge radio access network (GERAN) or a UMTS terrestrial radio access network (UTRAN) and disabling an evolved UTRAN (E-UTRAN) function, based on the network support information and the network update result indicating TA updated. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A terminal for providing a voice over IP multimedia subsystem (IMS VoPS) in a mobile communication system, the terminal comprising:
-
a transceiver configured to transmit and receive signals; and a controller configured to; initiate a voice call based on the IMS VoPS, transmit a tracking area update request message if entering a tracking area that is not registered, receive from a network a first tracking area update accept message including network support information indicating whether the network supports the IMS VoPS, identify that a bearer associated with the voice call is released, transmit a combined tracking area update request message, receive from the network a second tracking area update accept message including a network update result indicating tracking area (TA) updated, and attempt to select a GSM edge radio access network (GERAN) or a UMTS terrestrial radio access network (UTRAN) and disable an evolved UTRAN (E-UTRAN) function, based on the network support information and the network update result indicating TA updated. - View Dependent Claims (8, 9, 10, 11, 12)
-
Specification