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Single radio voice call continuity processing method and system

A technology of call continuity and wireless voice, applied in the field of communication, which can solve the problems of base station judgment error, handover failure, and inability to notify the base station in time.

Active Publication Date: 2013-08-14
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
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  • Description
  • Claims
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Problems solved by technology

[0006] Embodiments of the present invention provide a single wireless voice call continuity processing method and system to solve the problem that after the SRVCC capability information of the MME or the SRVCC capability information of the UE is changed, the base station cannot be notified in time, resulting in an incorrect judgment of the base station, resulting in handover failure The problem

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  • Single radio voice call continuity processing method and system
  • Single radio voice call continuity processing method and system

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Embodiment 1

[0059] The SRVCC solution mainly solves the problems existing in the deployment of voice services in the LTE network. Under the LTE network, the terminal uses the IMS-based Voice over LTE to establish the voice service; when the LTE does not reach the full network coverage, as the user moves, the ongoing voice The business will face the problem of whether the voice can be continuous after leaving the LTE coverage area. At this time, SRVCC can switch the voice to the circuit domain to ensure that the voice call is not interrupted.

[0060] The decision of SRVCC is done on the eNB side. When requested by the user, the UE will pass its initial SRVCC capability information to the MME in the attach process, and the MME will synthesize its own SRVCC capability information and the UE’s SRVCC capability information to obtain a comprehensive SRVCC The capability information is then notified to the eNB of the comprehensive SRVCC capability information, and the eNB performs handover judgment...

Embodiment 2

[0075] Reference figure 2 , Shows a flowchart of a method for processing continuity of a single wireless voice call proposed in the second embodiment of the present invention, and the method may include:

[0076] Step 200: When the MME establishes a connection with the base station, an S1 establishment response message is sent to the base station, and the initial SRVCC capability information of the MME is added to the S1 establishment response message.

[0077] In the embodiment of the present invention, when the MME establishes a connection with the base station, the MME can send a S1SETUP RESPONSE message to the base station. At this time, the MME can add its own initial SRVCC capability information to the S1SETUP RESPONSE message, so that the initial SRVCC of the MME can be added. The capability information is notified to the base station.

[0078] For example, in the embodiment of the present invention, a "SRVCC operation possible" field can be added to the S1SETUP RESPONSE mess...

Embodiment 3

[0184] Reference image 3 , Shows a structural block diagram of a single wireless voice call continuity processing system proposed in the third embodiment of the present invention. The system may include: a sending module 300, a first notification module 302, a receiving module 304, an extraction module 306, and The second notification module 308.

[0185] among them,

[0186] The sending module 300 is configured to send an S1 establishment response message to the base station when the MME establishes a connection with the base station, and the initial SRVCC capability information of the MME is added to the S1 establishment response message;

[0187] The first notification module 302 is configured to parse and obtain the initial SRVCC capability information of the user equipment, generate comprehensive SRVCC capability information from the initial SRVCC capability information of the user equipment and the initial SRVCC capability information of the MME, and notify the comprehensive ...

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Abstract

The embodiment of the invention provides a single radio voice call continuity (SRVCC) processing method and system to solve the problem that after SRVCC capability information of an MME (Mobility Management Entity) or UE (User Equipment) is changed, a base can not be timely notified, so that wrong judgment of the base can be caused, and the handover is unsuccessful. According to the method and the system provided by the embodiment of the invention, when the SRVCC capability information of the MME and / or the UE is changed, and the base can be timely notified about the changed information, so that the base can judge whether an SRVCC handover request needs to be initiated or not currently according to the changed SRVCC capability information of the MME and the UE, thereby avoiding wrong judgment of the base and improving the success rate of the handover.

Description

Technical field [0001] The embodiment of the present invention relates to the field of communication technology, and in particular to a method and system for processing the continuity of a single wireless voice call. Background technique [0002] On the basis of the existing GSM / EDGE radio access network (GSM EDGE Radio Access Network, GERAN) and UMTS Terrestrial Radio Access Network (UMTS Terrestrial Radio Access Network, UTRAN), 3GPP launched the Long Term Evolution (LTE) ) And the system architecture evolution (System Architecture Evolution, SAE) standardization work. [0003] In the initial stage of LTE network construction, its coverage area is limited. When users are using LTE network for voice calls and move to areas where LTE signal is weak but GERAN / UTRAN network signal coverage is better, in order to ensure the continuity of voice calls ( Voice Call Continuity, VCC), you need to switch the call routing LTE to GERAN / UTRAN. Since there is currently no terminal that can at...

Claims

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Application Information

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IPC IPC(8): H04W4/16H04W8/02H04W36/00
Inventor 王晓峰
Owner DATANG MOBILE COMM EQUIP CO LTD
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