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Method and terminal for implementing voice business switch between different systems

A technology of voice service and different systems, applied in the field of communication

Inactive Publication Date: 2011-06-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007]Because in the prior art, it is necessary to ensure the switchback of the call terminal according to the relevant resources of the call terminal in the source network, but the prior art does not consider the session initiation protocol (SIP, Session Initiation Protocol) registration timer expires, and in fact, if the SIP registration timer expires, the source network will release all resources related to the call terminal, which will cause the call terminal to switch back to the source Switchback failed due to no relevant PS domain context during network

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  • Method and terminal for implementing voice business switch between different systems
  • Method and terminal for implementing voice business switch between different systems
  • Method and terminal for implementing voice business switch between different systems

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Experimental program
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Embodiment Construction

[0025] like figure 1 It is shown in the process of the process of implementing a method of switching between the voices of the different systems.The method includes:

[0026] S101: Call terminal A (UE-A) Send Measurement Reports message to ENB.

[0027] S102: According to the Measurement Reports message, when the ENB decides to send a Handover Required message to the MME when the CS domain that is switched from the PS domain to the strange system is determined.

[0028] S103: The MME selects a CS-PROXY in this Plmn and sends Forward Handover Required messages to the CS-Proxy.

[0029] Among them, one side of the CS-PROXY has an interface with MME, and the other side has interfaces with UMTS / GERAN CS domain core network.For users, in LTE, it is equivalent to the MSC entity. It has anchoring point in switching (that is, always connect to the node during the call process). You can forward the switching request from the LTE network to the UMTS / GERANCS domain.

[0030] It should be exp...

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Abstract

The embodiment of the invention discloses a method for realizing voice service switching among dissimilar systems. The method comprises the following steps: before initiating domain switching for the CS domain of a circuit, a calling terminal located in a packet switching PS domain sends a session initiation protocol (SIP) registering request to IP media system (IMS); after receiving the respond of the SIP registering request returned by IMS, the calling terminal initiates the domain switching for the CS domain of the circuit. Meanwhile, the embodiment of the invention discloses a method for realizing voice service switching among the dissimilar systems. The invention ensures that the time for SIP registration is sufficient when domain switching is initiated, so as to finish subsequent vice service and cut back, and resource related to SIP in a source system is enabled not to be released because of overtime of SIP registration. Therefore, the calling terminal can obtain the information resource related to the needed PS domain when cutting back to the resource system.

Description

Technical field [0001] The invention involves the field of communication technology, especially a method and terminal to realize the switching of voice business switching between different systems. Background technique [0002] For different network loading mechanisms, commonly used mobile communication voice services include: CS (CIRCUITSERVICE, Circuit Business) Domains and other voice telephones such as passing, and PS (Packetswitching, packet exchange) IP carrier voice technology (VOIPVoice over ip) session business.Among them, the CS domain carrying technology is applied to the global mobile communication system (UMTS, Universal Mobile Telecommunications System) or GSM / Edge wireless access network (GERAN) of the 2G / 3G network.The PS domain carrying technology is applied to the system architecture evolution (SAE, System Architecture Evolution) network or long -term evolution (LTE, Long Term Evolution) network. [0003] Since the SAE / LTE network belongs to the initial stage, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/18H04M7/00
Inventor 邓永锋余勇军王济勇
Owner HUAWEI TECH CO LTD