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Method and device for switching voice

A voice and voice call technology, applied in the field of network communication, can solve the problem of inability to guarantee the continuity of voice sessions, and achieve the effect of ensuring continuity

Inactive Publication Date: 2010-12-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Embodiments of the present invention provide a voice switching method and device to overcome the problem in the prior art that the continuity of the voice session cannot be guaranteed in the scenario of UE roaming

Method used

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  • Method and device for switching voice

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Experimental program
Comparison scheme
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Embodiment 1

[0038] A schematic diagram of network deployment of a PLMN provided in this embodiment is as follows figure 1 shown in figure 1 , including: PLMN A and PLMN B two parts.

[0039] In this embodiment, PLMN A and the UE subscribed in PLMN A support the IMS architecture, and thus can support the SRVCC mechanism. PLMN B and UEs subscribed in PLMN B do not support the IMS architecture, but only support the CS mechanism. The VCC AS is deployed in the area of ​​PLMN A, but it can also provide services for UEs located in PLMN B under the premise of an operator agreement.

[0040] For the UE subscribed in PLMN A, since it needs to support IMS-based SRVCC, the relevant CAMEL (Customized Applications for MobileNetwork Enhanced Logic, customized application for mobile network enhanced service) subscription data of the circuit domain that supports SRVCC services is configured in the HLR ( Home Location Register, Home Location Register) A, and IMS-related SRVCC subscription data, such as ...

Embodiment 2

[0061] The embodiment of the present invention also provides a CS voice switching device in a UE roaming scenario, the specific structure of which is as follows: Figure 5 As shown, the following modules are included:

[0062] The CS voice call establishment and anchoring module 51 is configured to receive the CS voice call signaling sent by the UE's home MSC, establish a CS voice call in the first network according to the voice call signaling, and CS voice call for session anchoring;

[0063] A voice call replacement module 52, configured to replace the CS voice call in the first network with a new voice call established through the second network when the UE is roaming from the first network to the second network .

[0064] Described voice call replacement module 52 comprises:

[0065] The voice call release module 521 is configured to release the CS voice call in the first network supporting the IMS system after receiving the update session request sent for the SRVCC-enhan...

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Abstract

The embodiment of the invention provides a method and a device for switching CS voice in a UE roaming scene. The method mainly comprises the following steps that: a VCC AS (voice call continuity application server) of the roaming place of UE receives a CS (circuit switching) voice call signaling sent by a mobile switching center (MSC) of the home place of the UE; the VCC AS establishes a CS voice call supporting an IP multimedia subsystem (IMS) in a first network according to the CS voice call signaling, and performs session anchoring on the CS voice call; and the UE accesses the IMS through a second network and establishes a new voice call when moving from the first network to the second network in the roaming place, and the VCC AS replaces the CS voice call with the new voice call. Due to the adoption of the method and the device, the CS voice call can be switched from the first network supporting the IMS to the second network in the UE roaming scene so as to ensure the continuity of the CS voice call in the UE roaming scene.

Description

technical field [0001] The present invention relates to the technical field of network communication, in particular to a CS voice switching method and device in a UE roaming scene. Background technique [0002] UMTS (Universal Mobile Telecommunications System, universal mobile communication system) is a third-generation mobile communication system that adopts WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access) air interface technology, and the UMTS system is usually called WCDMA communication system. The UMTS system mainly includes: RAN (Radio Access Network, wireless access network) and CN (Core Network, core network). CN is logically divided into CS circuit switched domain (Circuit Switched Domain, CS) and PS (Packet Switched Domain, packet switched domain). [0003] SAE (System Architecture Evolution, System Architecture Evolution) is a core network evolved on the basis of the 3G (The third Generation Mobile Telecommunication, third-ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/14H04W36/18H04W76/02H04W76/06
Inventor 吴晓波温立张戬
Owner HUAWEI TECH CO LTD
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