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Business exchaging method for switching from 2G to 3G mobile communication system

A switching back and business technology, applied in the direction of wireless communication, electrical components, radio/inductive link selection arrangement, etc., can solve problems such as inability to switch, lack of information, etc.

Inactive Publication Date: 2007-01-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In this way, there is a lack of information on the access network side of the 3G network. Therefore, even if the radio resource conditions are met, the radio network controller (RNC) device will not actively request to upgrade the service from the voice service to the multimedia service. As a result, the user cannot switch back to the SCUDIF call service after switching between systems

Method used

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  • Business exchaging method for switching from 2G to 3G mobile communication system
  • Business exchaging method for switching from 2G to 3G mobile communication system

Examples

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Embodiment 1

[0050] In this embodiment, the MSC adopts the dual configuration mode of carrying multimedia as the preferred service and voice as the optional service in the RAB assignment message, and notifies the RNC to modify the service to the SCUDIF call service.

[0051] Usually, the RAB assignment message is used in the service establishment phase, and the user's service can be established, modified, or deleted by using the RAB assignment message.

[0052] In this embodiment, the user's dual-mode terminal is in the dual-network coverage area of ​​the 2G network and the 3G network, and is making a SCUDIF call supporting dual BCIEs. As the user is moving, the wireless resource changes, causing the user to switch from the 3G network to the 2G network, and the SCUDIF call will be degraded to a voice call when the user switches from the 3G network to the 2G network;

[0053] When the mobile of the user satisfies the wireless resource conditions, the user switches back from the 2G network t...

Embodiment 2

[0099] In this embodiment, the MSC adopts the dual configuration method that the voice is the preferred service and the multimedia is the optional service in the RAB parameter in the relocation request message, and notifies the RNC to modify the service to the SCUDIF call service.

[0100] The relocation request message is a request sent by the MSC to the RNC during the relocation process of inter-system handover.

[0101] In this embodiment, the user's dual-mode terminal is in the dual-network coverage area of ​​the 2G network and the 3G network, and is making a SCUDIF call supporting dual BCIEs. As the user is moving, the wireless resource changes, causing the user to switch from the 3G network to the 2G network, and the SCUDIF call will be degraded to a voice call when the user switches from the 3G network to the 2G network;

[0102] When the mobile of the user satisfies the wireless resource conditions, the user switches back to the 3G network from the 2G network again. Du...

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Abstract

A method for changing service from 2G network back to 3G network includes informing access network to revise said service to be SCUDIF call service after switched back service quality being decreased in 2G network is confirmed by core network in 3G network, revising said service to be SCUDIF call service by access network according said notification.

Description

technical field [0001] The invention relates to inter-mobile communication system handover technology, in particular to a service change method for handover from the second generation to the third generation mobile communication system. Background technique [0002] As the third generation mobile communication (3G) Wideband Code Division Multiple Access (WCDMA) technology matures day by day, many countries in the world have deployed WCDMA networks. In the process of 3G network construction, in order to reduce network construction costs and provide business continuity services, it is necessary to rely on the second generation mobile communication (2G) network to gradually achieve the goal of continuous coverage. Therefore, in a long period of time, 2G network and 3G network will co-exist and complement each other. [0003] Unrestricted Digital Information / Restricted Digital Information (UDI / RDI) Service Change and Fallback (SCUDIF) call is a multimedia call that supports Dua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04W36/12
CPCH04W36/12H04W36/125H04W36/1443
Inventor 吴晓明丁岩张晓鹏
Owner HUAWEI TECH CO LTD
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