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 initiate the establishment of the media connection between the terminal and the remote has yet to come up with a clear solution

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

Embodiment 1

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

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

[0055] The current MSC establishes a media connection with the terminal after receiving the message carrying media resource information from 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 the signaling is anchored to the current MSC, in order to ensure the successful establishment of the media connection: in the connection establishment step, the current MSC retries to forward the Establish connection message. See embodiment one, two.

[0058] W...

Embodiment 2

[0101] image 3 It is a flow chart of Embodiment 2 of the method for implementing reverse single-standby service continuity of the present invention, describing that a call is established between UE-1 and UE-2, and UE-1 establishes the call through the CS domain of the 2 / 3G network, Therefore, UE-1 is connected to a CS media connection in the call media path. When UE-1 moves and needs to change its access mode to LTE or HSPA PS domain, the subsequent session is anchored through the signaling of the target MSC but not the media When the media connection is anchored and the target MSC is not the original MSC, UE-1 and the SC AS interact through the MSC, and the process for UE-1 to realize 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 path passes through the S...

Embodiment 3

[0127] Figure 4 It is a flow chart of Embodiment 3 of the method for implementing reverse single-standby service continuity of the present invention, describing that a call is established between UE-1 and UE-2, and UE-1 establishes a 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 In the case of MSC, UE-1 and SC AS interact directly, and the process of realizing reverse single-standby service continuity includes the following steps:

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

[0129] Step 405, MSC receives the handover request from the CS domain, and immediately sends a handover preparation message to UE-1, such as sending a request to UE-1 through a short message (SMS) or an unstructured supplementary service data service (U...

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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
CPCH04W76/02H04W36/0022H04W76/10H04W36/00226
Inventor 谢振华陶全军
Owner ZTE CORP
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