Reverse single-standby service continuity realization method and system

A continuity and business technology, applied in the communication field, to achieve the effect of ensuring business continuity

Inactive Publication Date: 2011-11-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For now, the handover process has a clear implementation process in the industry (such as figure 1 shown), but how to init

Method used

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  • Reverse single-standby service continuity realization method and system
  • Reverse single-standby service continuity realization method and system
  • Reverse single-standby service continuity realization method and system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0052] When the media anchors the current MSC, refer to the first embodiment below:

[0053] The handover preparation notification, the transfer request, and the connection establishment message all carry session-related information;

[0054] In the connection establishment step, the connection establishment message forwarded by the current MSC to the terminal carries media resource information of the current MSC;

[0055] After the current MSC receives the message carrying media resource information from the terminal, it establishes a media connection with the terminal;

[0056] The current MSC associates the media connection between the current MSC and the terminal and the media connection between the current MSC and the remote end according to the session association information.

[0057] When signaling anchors the current MSC, it is a way to ensure the successful establishment of the media connection: in the connection establishment step, the current MSC receives the message of reje...

Example Embodiment

[0100] Example two

[0101] image 3 It is the flow chart of the second embodiment of the method for realizing the continuity of reverse single standby service of the present invention. It describes the establishment of a call between UE-1 and UE-2, and UE-1 establishes the call through the CS domain of the 2 / 3G network. Therefore, UE-1 in the media path of the call is a CS media connection. When UE-1 moves and needs to change its access mode to the PS domain of LTE or HSPA, subsequent sessions are anchored by the target MSC signaling but not media. When the media connection is established by anchoring and the target MSC is not the original MSC, UE-1 and SC AS interact through the MSC. The process for UE-1 to achieve reverse single standby service continuity includes the following steps:

[0102] Step 301: UE-1 establishes a session with UE-1 through the CS domain and the original MSC, the target MSC supports IMS signaling but is not in the signaling path, and the session signaling...

Example Embodiment

[0126] Example three

[0127] Figure 4 It is the flow chart of the third embodiment of the method for realizing continuity of reverse single standby service of the present invention. It describes that a call is established between UE-1 and UE-2. UE-1 establishes the call through CS domain access, so the call media The path connecting UE-1 is a CS media connection. When UE-1 moves and needs to change its access mode to LTE or HSPA PS domain, the target MSC is not in the signaling path of subsequent sessions, and the target MSC is not the original one. In the case of MSC, UE-1 and SC AS directly interact, and the process of realizing reverse single standby service continuity includes the following steps:

[0128] Steps 401 to 404, and image 3 301~304 are the same;

[0129] Step 405: Upon receiving the handover request from the CS domain, the MSC immediately sends a handover preparation message to UE-1, for example, sending a request to UE-1 through short message (SMS) or unstructure...

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Abstract

The invention relates to a reverse single-standby service continuity realization method and system. The reverse single-standby service continuity realization method comprises the following steps: a switching preparation notification step: the current mobile switching center (MSC) sends a switching request preparation notification to a terminal after receiving a switching request from a CS (Circuit Switched) domain; a transfer request step: the terminal sends a transfer request carrying the multimedia resource information M1 of the terminal to a service continuity application server (SCAS) through the original network after receiving the switching preparation notification; and a connection establishment step: the terminal initiates a multimedia connection establishment process between the terminal and a far end or triggers the SCAS to initiate the multimedia connection establishment process between the terminal and the far end. Through the method and system provided by the invention, when the terminal is switched from the CS domain to a PS (Packet Switched) domain, reverse single-standby service continuity can be realized.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and system for realizing reverse single-standby service continuity in an IP (Internet Protocol, IP for short) multimedia subsystem. Background technique [0002] IP Multimedia Core Network Subsystem (IMS) is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3GPP), which builds an open and flexible business environment , supports multimedia applications, and can provide users with rich multimedia services. [0003] In the IMS service system, the control layer and the service layer are separated, and the control layer does not provide specific services, but only provides necessary functions such as triggering, routing, and charging to the service layer. [0004] The service triggering and control functions in the control layer are completed by a call session control function (Call Session Control Function, CSCF for short). The call...

Claims

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Application Information

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IPC IPC(8): H04W36/14H04W76/02
CPCH04W76/02H04W36/0022H04W76/10
Inventor 谢振华陶全军
Owner ZTE CORP
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