Voice business continuity switching method

A voice service and continuity technology, applied in the field of communication, can solve problems such as inability to switch IMS sessions

Active Publication Date: 2015-05-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0056] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a voice service continuity switching method to overcome the inability to successfully switch the IMS session from the LTE / SAE network access to the CS network access in the prior art. entry problem

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Examples

Experimental program
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no. 1 example

[0086] image 3 For the first embodiment of the present invention based on figure 2 The flow chart of the method for voice service continuity handover (handover from LTE / SAE network access to CS domain access) under the SRVCC architecture is shown.

[0087] The core idea of ​​this embodiment is: after the enhanced MSC receives the handover completion message (the MAP sends the end signal message), it delays sending the message notifying the MME that the handover has been completed, so as to realize that the MME delays instructing the policy control system to release the corresponding IMS session resource the goal of. like image 3 As shown, the method includes the following steps:

[0088] 301. After receiving the measurement request sent by the LTE / SAE wireless network element E-UTRAN, the UE sends a measurement report to the E-UTRAN, where the measurement report includes adjacent cell information;

[0089] 302. The E-UTRAN decides to initiate a handover according to the...

no. 2 example

[0120] Figure 4 For the second embodiment of the present invention based on figure 2 The flow chart of the method for voice service continuity handover (handover from LTE / SAE network access to CS domain access) under the SRVCC architecture is shown.

[0121] The core idea of ​​this embodiment is: after the MME receives the handover completion message from PS to CS, it delays instructing the policy control system to release the IMS session resource. like Figure 4 As shown, the method includes the following steps:

[0122] 401. After receiving the measurement request sent by the LTE / SAE wireless network element E-UTRAN, the UE sends a measurement report to the E-UTRAN, where the measurement report includes adjacent cell information;

[0123] 402. The E-UTRAN decides to initiate a handover according to the adjacent cell information in the measurement report, and therefore sends a relocation request message to the MME;

[0124] 403. After receiving the relocation request me...

no. 3 example

[0154] Figure 5 For the third embodiment of the present invention based on figure 2 The flow chart of the method for voice service continuity handover (handover from LTE / SAE network access to CS domain access) under the SRVCC architecture is shown.

[0155] The core idea of ​​this embodiment is: after receiving the handover completion message (MAP sends the end signal message), the enhanced MSC judges whether it has received the domain handover success response sent by the IMS domain (SCC AS), and reports to the MME after receiving the domain handover success response. Send PS to CS handover complete message. like Figure 5 As shown, the method includes the following steps:

[0156] 501. After receiving the measurement request sent by the LTE / SAE wireless network element E-UTRAN, the UE sends a measurement report to the E-UTRAN, where the measurement report includes adjacent cell information;

[0157] 502. The E-UTRAN decides to initiate a handover according to the adjac...

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Abstract

The invention relates to a voice business continuity switching method which comprises the following steps: when an IMS (IP Multimedia Subsystem) session of UE (User Equipment) is switched from LTE / SAE (Long Term Evolution / System Architecture Evolution) network access to CS (Circuit Switched) domain access during voice business continuity switching, the UE sends a switching completion message to an enhanced MSC (Mobile Switching Center) through target access equipment of a CS domain; after the switching completion message is received and a domain switching success response sent by an SCC AS is confirmed to be received, the enhanced MSC sends a message used for indicating that the IMS session is switched to the CS domain access to an MME (Mobility Management Entity) completely; after the message sent by the enhanced MSC is received, the MME sends an indicating message used for releasing the carrying resource of the IMS session established in the LTE / SAE network. In conclusion, the voice business continuity switching method solves the problem of switching failure caused by wrong release of the whole session after the MME receives the switching completion message.

Description

technical field [0001] The invention relates to the communication field, in particular to a voice service continuity switching method. Background technique [0002] In order to ensure the continuity of voice services between the Circuit Switched (CS) domain and the IP (Internet Protocol, IP) Multimedia Subsystem (IP Multimedia CoreNetwork Subsystem, IMS) domain, the traditional voice Business continuity (Voice Call Continuity, referred to as VCC) solutions such as figure 1 shown. [0003] Among them, after the dual-mode user equipment (User Equipment, referred to as UE) is successfully registered in both the CS domain and the IMS network, when the UE initiates a voice service in the CS domain or the IMS network, it is anchored to the centralized control service and session service of the IMS network. In the continuity application server (Service Centralization and Continuity Application Server, SCC AS for short), at this time, the UE has two identifiers known to the SCC AS...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/12H04W40/36
Inventor 游世林蔡继燕宗在峰郝振武谢振华
Owner ZTE CORP
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