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A system and method for realizing the call service based on voice service continuity

A technology of call service and voice service, which is applied in the field of network communication and can solve problems such as call failure

Active Publication Date: 2009-05-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the GMSC cannot determine that the call has been anchored in the IMS domain, and does not need to be routed to the IMS domain again. In this way, the GMSC may be based on the static routing scheme again, or the CS-NeDS scheme based on HSS will The call is routed back to the IMS domain again, resulting in the normal anchoring process of the call from the CS to the IMS domain, and then returning to the CS domain from the IMS domain for connection, the call cannot be connected from the CS to the called terminal, causing the call to be routed from the CS domain Repeated routing loops to the IMS domain, eventually causing the call to fail

Method used

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  • A system and method for realizing the call service based on voice service continuity
  • A system and method for realizing the call service based on voice service continuity
  • A system and method for realizing the call service based on voice service continuity

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Embodiment Construction

[0130] In the static anchor solution of the voice service continuity service, the present invention proposes a system and method to prevent routing loops. In the technical solution of the present invention, for incoming calls from the CS domain to the called user, through When the application server with IMS-NeDS function determines that the call needs to be forwarded from the IMS domain to the CS domain and then connected to the called terminal, it generates the instruction information to directly connect the call to the called terminal, so that the network equipment in the system can identify Whether the call has been anchored in the IMS domain, so that the network device can directly continue to the called terminal to process the call that has been anchored. For example, when the network device in the above system is GMSC, if the GMSC If the instruction to directly connect the call to the called terminal is not received, it is determined that the call is not anchored in the IMS...

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Abstract

The provided system and method for calling business based on dialogue business continuity comprises: an application server with IMS-NeDS function generates indication message for direct succeeding the calling to the called terminal when determining it requires to transmit the calling from IMS domain to CS domain and succeed to the called terminal, and enables network device in system clear decide whether this calling is anchored in IMS domain. This invention prevents repeated route cycle for calling, and improves calling success ratio.

Description

Technical field [0001] The invention relates to the technical field of network communication, in particular to a system and method for realizing call services based on the continuity of voice services. Background technique [0002] Starting from the 3GPP R5 (3rd Generation Partnership Project, the third generation mobile communication standardization partnership project) stage, the UMTS (Universal Mobile Telecommunications System) core network is divided into CS (Circuit Switched), PS (Packet Switched) and IMS (IP Multimedia Subsystem) ) Three subsystems. [0003] The CS domain (Circuit Switched Domain, circuit switched domain) is used to provide users with circuit-type service connections. The CS domain mainly includes: MSC (MSC Server / CS-MGW, Mobile Switch CenterServer / CS-Media GateWay, mobile switching center server / circuit domain-media gateway), GMSC (Gateway MSC, gateway mobile switching center) and IWF (InterWorking Function) , Interworking function). Among them, the MSC co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/22H04W84/02H04W8/02H04W36/12H04W76/02H04W88/14
Inventor 段小琴朱东铭
Owner HUAWEI TECH CO LTD
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