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Method and system for realizing CS-service switching in EPS network access mode

A technology for network access and handover request, applied in the field of communication, can solve the problems of unknown, handover failure, unable to find the destination device, etc.

Inactive Publication Date: 2010-09-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both the IWF and the MSC are in the home network. At this time, as in step 305, the destination cell in the handover request message received by the MSC is the visited cell, and the home MSC may not know the cell and cannot find the destination device, resulting in handover failure.

Method used

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  • Method and system for realizing CS-service switching in EPS network access mode
  • Method and system for realizing CS-service switching in EPS network access mode
  • Method and system for realizing CS-service switching in EPS network access mode

Examples

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no. 1 example

[0133] The IWF directly sends a switching request to the destination MSC through an inter-office interface according to the address number of the destination MSC;

[0134] In addition, in order to realize the process that the IWF initiates handover to the destination MSC, the system of the present invention has the following functions:

[0135] The system also includes a source MSC, which is used to save the cell and its matching MSC list, and is also used to receive the handover request sent by the IWF, query the corresponding target MSC according to the target cell in the handover request, and send a handover message to the target MSC. ask;

[0136]The IWF is also used to save a list of cells, and the list is consistent with the list in the source MSC it serves; after the IWF receives the handover request, it is also used to judge whether the target cell is a cell in the list, and if so, the The IWF is further configured to send a handover request to the source MSC, otherwi...

no. 2 example

[0138] The IWF also includes a source MSC. When the IWF initiates handover to the destination MSC, it is used to send a handover request to the source MSC, which carries the address number of the destination MSC; The destination MSC sends a handover request.

[0139] Corresponding to the third embodiment, the IWF includes a base station function and a handover function module, the base station function is used to receive the handover request sent by the MME, and is also used to forward the handover request to the handover function module, which carries the media establishment The information and the address number of the destination MSC are also used to establish a bearer with the handover function module; the handover function module is used to receive the handover request and establish a bearer with the base station function module, It is also used to initiate handover to the target MSC; after the target MSC completes the handover, it is also used to send a handover response...

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Abstract

The invention provides a method for realizing CS-service switching in an EPS network access mode and a system for implementing the method. An MME (mobile management entity) in the method-based system is provided with a neighboring cell index and a MSC address number list corresponding to the neighboring cell index. The method comprises the following steps that: a base station sends a switching request to the MME (mobile management entity), wherein the switching request carries a target cell index; the MME receives the switching request, and sends the switching request to an interworking gateway (IWF); the IWF receives the switching request, and acquires a MSC (target mobile switching center) address number corresponding to the target cell index from the MME; and the IWF initiates the switching to the target MSC according to the acquired target MSC address number. The method and the system of the invention can ensure the successful switching of the CS services in the EPS network access mode.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and system for realizing CS service switching in EPS network access mode. Background technique [0002] In order to maintain the strong competitiveness of the third generation mobile communication system standardization project (3rd Generation Partnership Project, referred to as 3GPP) in the field of mobile communication, 3GPP is currently working on research on the packet switched core network (Packet Switched Core, referred to as PS Core for short) ) and the evolution of Universal Mobile Telecommunication System Radio Access Network (UTRAN for short), the purpose is to enable the evolved PS Core (EPC for short) to provide higher transmission rate and shorter transmission delay , and supports E-UTRAN (Evolved UTRAN, evolved UTRAN), GERAN (GSM EDGE radio access network, GSM EDGE wireless access network, where GSM is the abbreviation of Global System for Mobile communica...

Claims

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Application Information

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IPC IPC(8): H04W36/14H04W48/16
CPCH04W36/0022
Inventor 陶全军郝振武
Owner ZTE CORP
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