Method for placing call in voice call continuity and terminal and server thereof

• US 8,638,782 B2
• Filed: 02/05/2007
• Issued: 01/28/2014
• Est. Priority Date: 02/06/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Song, Jae-Seung, Yoon, Kyung-Ae, Ra, Mi-Seon, Kim, Hyun-Sook, Hede, Patrice
• Primary Examiner(s): Phung, Luat
• Assistant Examiner(s): CHANG, KAI J
• Application Number:
  US11/702,067
• Publication Number:
  US 20070201662A1
• Time in Patent Office: 2,549 Days
• Field of Search: 370352-356, 370/331, 455/412.1, 455/414.1, 4554321-445
• US Class Current: 370/353
• CPC Class Codes: H04L 45/22 Alternate routing
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/103 in the network
• CPC Class Codes: H04L 65/104 in the network
• CPC Class Codes: H04L 65/1043 Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
• CPC Class Codes: H04L 65/1083 In-session procedures
• CPC Class Codes: H04L 65/1095 Inter-network session transfer or sharing
• CPC Class Codes: H04L 65/401 wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04M 3/42008 Systems for anonymous communication between parties, e.g. by use of disposal contact identifiers
• CPC Class Codes: H04M 3/42153 by subscriber
• CPC Class Codes: H04M 7/123 where the packet-switched network is an Internet Protocol Multimedia System-type network
• CPC Class Codes: H04Q 3/0045 involving hybrid, i.e. a mixture of public and private, or multi-vendor systems
• CPC Class Codes: H04W 36/0022 for transferring data sessions between adjacent core network technologies
• CPC Class Codes: H04W 36/00224 between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
• CPC Class Codes: H04W 36/00226 wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 8/18 Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
• CPC Class Codes: H04W 80/10 adapted for application session management, e.g. SIP [Session Initiation Protocol] connection management H04W76/00; arrangements for session management H04L67/14

Abstract

A method, server and terminal for providing a Voice Call Continuity (VCC) service, are discussed. According to an embodiment, the terminal includes a storage unit to store operator policy information and user preference information, the user preference information including domain selection information specifying a user-preferred domain to be used when originating the outgoing call from the terminal, the operator policy information including domain selection information specifying a network-preferred domain to be used when originating the outgoing call from the terminal; and a controller to perform a domain selection for the outgoing call based on the user preference information or the operator policy information.

Claims

1. A method for providing an incoming call directed to a terminal in a voice call continuity (VCC) service, the method comprising:

receiving, by a VCC application server, first domain selection information from the terminal for storage in the VCC application server and storing, in the VCC application server, the received first domain selection information,

wherein the first domain selection information is transmitted from the terminal to the VCC application server;

performing, by the VCC application server, a domain selection for the incoming call based on either the first domain selection information or second domain selection information depending on which domain selection information has a relatively higher priority,

wherein the first domain selection information is user preferences, the user preferences including domain selection information specifying a user-preferred domain to be used when transmitting the incoming call to the terminal, and

wherein the second domain selection information is operator policy, the operator policy including domain selection information specifying a network-preferred domain to be used when transmitting the incoming call to the terminal; and

transmitting, by the VCC application server, the incoming call over the selected domain selection,

wherein if the first domain selection information has a higher priority than the second domain selection information, the performing step includes;

selecting, by the VCC application server, either a circuit-switched (CS) domain or an IP multimedia subsystem (IMS) domain for the incoming call based on the first domain selection information, and

wherein if the second domain selection information has a higher priority than the first domain selection information, the performing step includes;

selecting, by the VCC application server, either the circuit-switched (CS) domain or the IP multimedia subsystem (IMS) domain for the incoming call based on the second domain selection information.

2. The method of claim 1, wherein the performing step is implemented by a Domain Selection Function of the VCC application server.

3. The method of claim 1, wherein the first domain selection information received by the VCC application server is initially input by a user at the terminal side.

4. The method of claim 1, wherein the storing step includes:

setting, by a user, the first domain selection information in the VCC application server, by using a device other than the terminal, for storage in the VCC application server.

5. The method of claim 4, further comprising:

transmitting the first domain selection information from the VCC application server to the terminal for storage in the terminal.

6. The method of claim 1, wherein the storing step includes:

receiving, by the VCC application server, a query regarding a user'"'"'s preference of a domain from the terminal; and

retrieving, by the VCC application server, the first domain selection information for storage in the VCC application server in response to the received query.

7. The method of claim 6, further comprising:

transmitting the retrieved first domain selection information from the VCC application server to the terminal for storage in the terminal.

8. A method for providing an outgoing call originating from a terminal subscribed to a voice call continuity (VCC) service, the method comprising:

receiving, by the terminal, second domain selection information, for the outgoing call originating from the terminal, from a VCC application server for storage in the terminal,

wherein the terminal supports voice call continuity (VCC) that is a home Internet Protocol multimedia subsystem (IMS) application capable of transporting voice calls between a circuit-switched (CS) domain and an IP multimedia subsystem (IMS) domain, and

wherein the second domain selection information is received by the terminal from the VCC application server;

performing, by the terminal, a domain selection for the outgoing call originating from the terminal based on first domain selection information or the second domain selection information, wherein the first domain selection information is user preferences and the second domain selection information is operator policy; and

transmitting, by the terminal, the outgoing call over the selected domain selection,

wherein the performing step includes;

selecting, by the terminal, either the circuit-switched (CS) domain or the IP multimedia subsystem (IMS) domain for the outgoing call based on either the first domain selection information or the second domain selection information depending on which domain selection information has a relatively higher priority,

wherein if the first domain selection information has a higher priority than the second domain selection information, the performing step includes;

selecting, by the terminal, either the circuit-switched (CS) domain or the IP multimedia subsystem (IMS) domain for the outgoing call based on the first domain selection information, and

wherein if the second domain selection information has a higher priority than the first domain selection information, the performing step includes;

selecting, by the terminal, either the circuit-switched (CS) domain or the IP multimedia subsystem (IMS) domain for the outgoing call based on the second domain selection information.

9. The method of claim 8, further comprising:

storing, in the terminal, the second domain selection information received from the VCC application server.

10. The method of claim 8, wherein the user preferences include domain selection information specifying a user-preferred domain to be used when transmitting the outgoing call from the terminal, and the operator policy includes domain selection information specifying a network-preferred domain to be used when transmitting the outgoing call from the terminal.

11. The method of claim 8, wherein the receiving step includes transmitting, by the terminal, an ACK message to the VCC application server after receiving, by the terminal, the second domain selection information from the VCC application server.

12. A device for providing service continuity and selecting a domain for an incoming call directed to a terminal in the service, the device comprising:

a storage unit to store therein operator policy information and user preference information, the user preference information including domain selection information specifying a user-preferred domain to be used when transmitting the incoming call to the terminal, the operator policy information including domain selection information specifying a network-preferred domain to be used when transmitting the incoming call to the terminal;

a domain selection function unit to perform a domain selection for the incoming call based on the user preference information or the operator policy information; and

a Device Management (DM) unit to transmit the user preference information including the set domain selection information from the device to the terminal for storage in the terminal,

wherein the domain selection function unit selects either a circuit-switched (CS) domain or an IP multimedia subsystem (IMS) domain for the incoming call based on the domain selection information of the user preference information, if the user preference information has a higher priority than the operator policy information, and

wherein the domain selection function unit selects either the circuit-switched (CS) domain or the IP multimedia subsystem (IMS) domain for the incoming call based on the domain selection information of the operator policy information, if the operator policy information has a higher priority than the user preference information.

13. The device of claim 12, further comprising:

a Ut interface unit to receive from the terminal the user preference information including the domain selection information set by a user, for storage in the storage unit.

14. The device of claim 12, further comprising:

a receiver to receive the user preference information including the domain selection information set by a user using an apparatus other than the terminal, for storage in the storage unit.

15. A terminal for providing service continuity and selecting a domain for an outgoing call originating from the terminal in the service, the terminal comprising:

a storage unit to store operator policy information and user preference information, the user preference information including domain selection information specifying a user-preferred domain to be used when originating the outgoing call from the terminal, the operator policy information including domain selection information specifying a network-preferred domain to be used when originating the outgoing call from the terminal;

a controller to perform a domain selection for the outgoing call based on either the user preference information or the operator policy information; and

a Device Management (DM) unit to receive the operator policy information for storage in the storage unit,

wherein the terminal supports voice call continuity (VCC) that is a home Internet Protocol multimedia subsystem (IMS) application capable of transporting voice calls between a circuit-switched (CS) domain and an IP multimedia subsystem (IMS) domain, and

wherein the controller selects either the circuit switched (CS) domain or the IP multimedia subsystem (IMS) domain for the outgoing call based on the domain selection information of the operator policy information or the user preference information,

wherein the controller selects either the circuit switched (CS) domain or the IP multimedia subsystem (IMS) domain for the outgoing call based on the domain selection information of the user preference information, if the user preference information has a higher priority than the operator policy information, and

wherein the controller selects either the circuit switched (CS) domain or the IP multimedia subsystem (IMS) domain for the outgoing call based on the domain selection information of the operator policy information, if the operator policy information has a higher priority than the user preference information.

16. The terminal of claim 15, wherein the storage unit receives, from a voice call continuity (VCC) application server, the operator policy information including the domain selection information.

17. The terminal of claim 15, wherein the controller transmits a query regarding a network'"'"'s preference of a domain to a voice call continuity (VCC) application server, and receives the operator policy information including the domain selection information from the VCC application server for storage in the terminal.