System and Method for Switching Ringing State Session with Customized Alerting Tone

• US 20120184254A1
• Filed: 07/21/2010
• Published: 07/19/2012
• Est. Priority Date: 09/30/2009
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Li, Zhendong, Li, Shitao
• Granted Patent: US 8,412,283 B2
• Time in Patent Office: Days
• US Class Current: 455/414.1
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/1063 Application servers providing network services systems providing special services to telephonic subscribers H04M3/42
• CPC Class Codes: H04M 3/02 Calling substations, e.g. by ringing selective calling H04Q
• CPC Class Codes: H04M 7/123 where the packet-switched network is an Internet Protocol Multimedia System-type network
• CPC Class Codes: H04W 36/0022 for transferring data sessions between adjacent core network technologies
• CPC Class Codes: H04W 36/00226 wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]

Abstract

The present invention provides a system and method for handing over a ringing status session with a color ring back tone, and when the ringing status session with the color ring back tone is handed over, a handover process includes: after an SCC AS receives a handover request, if the SCC AS judges that a session to be handed over is the ringing status session and a forking occurs so that there are a color ring back tone session and a normal media negotiation session, then associating the handover request with the color ring back tone session and the normal media negotiation session; and the SCC AS assisting to complete a handover to the normal media negotiation session and a handover to the color ring back tone session. The present invention completes not only updating to the normal media resource but also updating to the color ring back tone media.

Claims

1. A method for handing over an alerting phase session with a customized alerting tone, when the alerting phase session with the customized alerting tone is handed over, a handover process comprising:

after a Service Centralization and Continuity Application Server (SCC AS) receives a handover request, if the SCC AS judges that a session to be handed over is the alerting phase session and a forking occurs so that there are a customized alerting tone session and a normal media negotiation session, then correlating the handover request with the customized alerting tone session and the normal media negotiation session; and

the SCC AS assisting to complete a handover to the normal media negotiation session and a handover to the customized alerting tone session.

2. The method according to claim 1, wherein, the step of the SCC AS correlating the handover request with the customized alerting tone session and the normal media negotiation session comprises:

after the creation of the normal media negotiation session and the customized alerting tone session is completed, the SCC AS correlating the normal media negotiation session with the customized alerting tone session, and after receiving the handover request, correlating the handover request with the normal media negotiation session and the customized alerting tone session again;

or

the SCC AS, after receiving the handover request, correlating the handover request, the normal media negotiation session and the customized alerting tone session.

3. The method according to claim 1, wherein, the step of the SCC AS assisting to complete the handover to the normal media negotiation session and the handover to the customized alerting tone session comprises:

after the SCC AS receives the handover request sent from a Mobile Switching Center (MSC), firstly sending to a customized alerting tone application server (CAT AS) an update request of the customized alerting tone media session which carries Circuit Switch (CS) media resource information; and

the CAT AS, after receiving the update request of the customized alerting tone media session, negotiating and updating the customized alerting tone media session, and then returning to the SCC AS an update response which carries customized alerting tone media resource information; and

the SCC AS, which receives the update response, returning a handover request response carrying the customized alerting tone media resource information to the MSC through a Serving Call Session Control Function (S-CSCF); and

after a called user replies an answer response, the SCC AS completing the handover to the normal media negotiation session by a third-party call control mode.

4. The method according to claim 1, wherein, the step of the SCC AS assisting to complete the handover to the normal media negotiation session and the handover to the customized alerting tone session comprises:

after the SCC AS receives the handover request sent from a Mobile Switching Centre (MSC), sending an update request of the normal media negotiation session which carries Circuit Switch (CS) media resource information, and forwarding the update request to a called user through a customized alerting tone application server (CAT AS), and returning a handover request response carrying information of the customized alerting tone media session to the MSC through a Serving Call Session Control Function (S-CSCF) after receiving an update completion response;

the MSC, after receiving the handover request response, sending to the S-CSCF an invitation message which carries the information of the customized alerting tone media session;

the S-CSCF forwarding the received invitation message to the SCC AS, the SCC AS forwarding the invitation message to the CAT AS, and the CAT AS completing the negotiation and update for the customized alerting tone media session and then returning to the SCC AS an update completion response of the customized alerting tone media session which carries customized alerting tone media resource information on the CAT AS; and

the SCC AS forwarding the update completion response of the customized alerting tone media session to the MSC through the S-CSCF.

5. The method according to claim 2, wherein,

the step of the SCC AS correlating the normal media negotiation session with the customized alerting tone session comprises:

the SCC AS correlating the normal media negotiation session with the customized alerting tone session having the same session identifier, calling user information or calling number; and

the step of the SCC AS correlating the handover request with the normal media negotiation session and the customized alerting tone session comprises;

the SCC AS correlating the normal media negotiation session, the customized alerting tone session and the handover request having the same calling number.

6. A method for handing over an alerting phase session with a customized alerting tone, when the alerting phase session with the customized alerting tone is handed over, a handover process comprising:

after a Service Centralization and Continuity Application Server (SCC AS) receives a handover request, if the SCC AS judges that a session to be handed over is the alerting phase session and only a customized alerting tone session exists in that session, then firstly initiating a handover to the customized alerting tone session; and

after the SCC AS receives an off-hook response of a called user, when the SCC AS judges that a normal media negotiation session included therein is correlated with the previous customized alerting tone session, completing a handover to the normal media negotiation session.

7. The method according to claim 6, wherein, a principle of the SCC AS judging that the normal media negotiation session is correlated with the customized alerting tone session is that, two sessions have the same session identifier, calling user information, or calling number.

8. The method according to claim 6, wherein, after the SCC AS receives the off-hook response of the called user, the method further comprises:

the SCC AS completing the handover to the normal media negotiation session by a third-party call control mode.

9. A system for handing over an alerting phase session with a customized alerting tone, comprising a Service Centralization and Continuity Application Server (SCC AS);

wherein,

the SCC AS is configured to;

after receiving a handover request, if judging that a session to be handed over is the alerting phase session and a forking occurs so that there are a customized alerting tone session and a normal media negotiation session, then correlate the handover request with the customized alerting tone session and the normal media negotiation session; and

assist to complete a handover to the normal media negotiation session and a handover to the customized alerting tone session.

10. The system according to claim 9, wherein, in order to correlate the handover request with the customized alerting tone session and the normal media negotiation session, the SCC AS is configured to:

after the creation of the normal media negotiation session and the customized alerting tone session is completed, correlate the normal media negotiation session with the customized alerting tone session, and after receiving the handover request, correlate the handover request, the normal media negotiation session and the customized alerting tone session again;

or

after receiving the handover request, correlate the handover request with the normal media negotiation session and the customized alerting tone session.

11. The system according to claim 9, wherein,

the system further comprises a Mobile Switching Centre (MSC), a Serving Call Session Control Function (S-CSCF), and a customized alerting tone application server (CAT AS);

the process of the SCC AS assisting to complete the handover to the normal media negotiation session and the handover to the customized alerting tone session comprises;

the SCC AS, after receiving the handover request sent from the MSC, sending an update request of the normal media negotiation session which carries Circuit Switch (CS) media resource information, and forwarding the update request of the normal media negotiation session to a called user through the CAT AS;

returning a handover request response carrying information of the customized alerting tone media session to the MSC through the S-CSCF after receiving an update completion response replied by the called user;

the MSC, after receiving the handover request response, sending an invitation message which carries the information of the customized alerting tone media session, and forwarding the invitation message to the CAT AS through the S-CSCF and the SCC AS;

the CAT AS completing the negotiation and update for the customized alerting tone media session after receiving the invitation message, and returning to the SCC AS an update completion response of the customized alerting tone media session which carries customized alerting tone media resource information on the CAT AS; and

the SCC AS forwarding the update completion response of the customized alerting tone media session to the MSC through the S-CSCF.

12. The system according to claim 9, wherein,

the system further comprises a Mobile Switching Centre (MSC), a Serving Call Session Control Function (S-CSCF), and a customized alerting tone application server (CAT AS);

the process of the SCC AS assisting to complete the handover to the normal media negotiation session and the handover to the customized alerting tone session comprises;

after the SCC AS receives the handover request sent from the MSC, firstly sending to the CAT AS an update request of the customized alerting tone media session which carries Circuit Switch (CS) media resource information;

the CAT AS, after receiving the update request of the customized alerting tone media session, negotiating and updating the customized alerting tone media session, and then returning to the SCC AS an update response which carries customized alerting tone media resource information; and

the SCC AS, which receives the update response, returning a handover request response which carries the customized alerting tone media resource information to the MSC through the S-CSCF; and

after a called user replies an answer response, the SCC AS completing the handover to the normal media negotiation session by a third-party call control mode.

13. The system according to claim 10, wherein,

the SCC AS correlates the normal media negotiation session with the customized alerting tone session having the same session identifier, calling user information or calling number;

and

the SCC AS correlates the normal media negotiation session, the customized alerting tone session and the handover request having the same calling number.

14. A system for handing over an alerting phase session with a customized alerting tone, comprising a Service Centralization and Continuity Application Server (SCC AS);

wherein,

the SCC AS is configured to;

after receiving a handover request, if judging that a session to be handed over is the alerting phase session and only a customized alerting tone session exists in that session, then firstly initiate a handover to the customized alerting tone session; and

, after having receiving an off-hook response of a called user, when judging that a normal media negotiation session included in the off-hook response is correlated with the previous customized alerting tone session, complete a handover to the normal media negotiation session.

15. The system according to claim 14, wherein, a principle of the SCC AS judging that the normal media negotiation session is correlated with the customized alerting tone session is that, two sessions have the same session identifier, calling user information, or calling number.

16. The system according to claim 14, wherein, after the SCC AS receives the off-hook response of the called user, the SCC AS completes the handover to the normal media negotiation session by a third-party call control mode.