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Provision method and system for IP multimedia sub-system service

A multimedia subsystem and service technology, applied in transmission systems, circuit switching systems, telephone communications, etc., can solve problems such as duplication of functions

Active Publication Date: 2013-01-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition to CSI and VCC, an IMS centralized service is being studied in the prior art. Although the implementation methods of these three services are different, many functions are repeated.
On the other hand, since there are a lot of duplications in the functions of these three businesses, ideally, it is hoped to find a way to deal with the above three businesses by reorganizing and reallocating them. function, but there is no such processing method in the prior art

Method used

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  • Provision method and system for IP multimedia sub-system service
  • Provision method and system for IP multimedia sub-system service
  • Provision method and system for IP multimedia sub-system service

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0043]In the present invention, the circuit switching domain adapter (CSA) provides the network adaptation function, so as to realize the IMS service using the CS network to bear / provide media such as voice or video telephony (VP). Based on this idea, three implementations are specifically proposed in the present invention, and each implementation can realize three functions, namely: receiving a call, initiating a call, and VCC switching. When each implementation implements different functions, The specific processing methods are not the same, but the different implementation methods are similar to a large extent when realizing the same function. For example, when receiving a call from the peer end, the specific processing processes of the three methods ...

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Abstract

IP multimedia subsystem service (IMS) providing method and system are disclosed. When the other end originates the call, access domain selection function entity (ADSF) receives the call request of the other end, decides the access internet where the user endpoint(UE) receives this call according to the decision parameters pre-stored, and transmits the decision result to the serving call session control function entity (S-CSCF) through the call request, S-CSCF sends the call request to the circuit switched domain adaptor (CSA); the circuit switched (CS) access call branch is established between CSA and UE. When UE originates the call, CS access call branch is established between UE and CSA; the other call branch is established between CSA and the other end, establishing IMS call is finished. Utilizing the method and system disclosed by the solution, access IMS service through CS internet can be realized. And the current CSI service, VCC and ICS service are reformed. Consequently the resource utilization ratio can be increased and the running cost is saved. And it is easy to introduce the new service quickly.

Description

technical field [0001] The invention relates to IP Multimedia Subsystem (IMS) technology, in particular to an IMS service providing method and system. Background technique [0002] At present, mobile communication is mainly based on circuit switched (CS) networks, such as Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA), etc. Operators have established relatively complete and rich service platforms based on CS networks. However, the service provision of the CS network needs to be supported by the roaming Mobile Switching Center (VMSC), which is not conducive to the introduction of new services. The IMS network is a service network based on IP switching, which supports the user terminal (UE) to perform IMS multimedia services through various packet switching access networks, such as IP access network (IP-CAN), and its service provision has nothing to do with the roaming area, which is beneficial to Introduction of new multimedia services...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/50H04M7/00
CPCH04L12/66
Inventor 龙水平
Owner HUAWEI TECH CO LTD