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Consultation method and system of IP multimedia subsystem (IMS) media coding/decoding device

A codec and multimedia subsystem technology, applied in the field of mobile communications, to reduce signaling overhead and improve user experience

Active Publication Date: 2013-12-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The existing IMS media codec negotiation method requires an additional media resource request and response interaction, which increases the signaling overhead, and may cause the user to wait for a certain period of time to complete the additional signaling after the call is connected. The call can only be realized after the overhead

Method used

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  • Consultation method and system of IP multimedia subsystem (IMS) media coding/decoding device
  • Consultation method and system of IP multimedia subsystem (IMS) media coding/decoding device
  • Consultation method and system of IP multimedia subsystem (IMS) media coding/decoding device

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Experimental program
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Embodiment 1

[0052] figure 2 It is a schematic diagram of the IMS media codec negotiation signaling flow in Embodiment 1 of the present invention, describing that the network element providing the codec function negotiates codec information during the media negotiation process of the terminal, and decides according to the codec information used The process of starting the transcoding function is described as follows:

[0053] Step 201, with figure 1 Step 101 in is the same;

[0054] Step 202, IMS-ALG receives the media resource request, changes the media address in it to the media address of TrGW1, and adds the codec information supported by TrGW2 in the request (not including what UE1 already supports, because using UE1 supports The codec does not need a code conversion function), and at the same time, add the media address of TrGW2 in the request, and then forward the media resource request;

[0055] The newly added codec information can be recorded in the corresponding "m=" line and...

Embodiment 2

[0067] image 3 It is a schematic diagram of the IMS media codec negotiation signaling flow in Embodiment 2 of the present invention, describing that the network element providing the code conversion function negotiates codec information during the media negotiation process of the terminal, and decides according to the codec information used The process of starting the transcoding function is described as follows:

[0068] Step 301, and figure 1 Step 101 in is the same;

[0069] Step 302, IMS-ALG1 receives the media resource request, changes the media address in it to the media address of TrGW1, and adds the codec information supported by TrGW2 in the request (not including those already supported by UE1, because UE1 supports The codec does not need a code conversion function), and at the same time, add the media address of TrGW2 in the request, and then forward the media resource request;

[0070] The newly added codec information is also recorded in the corresponding "m="...

Embodiment 3

[0080] Figure 4 It is a schematic diagram of the IMS media codec negotiation signaling flow in Embodiment 3 of the present invention, describing that the network element that provides the codec function negotiates codec information during the media negotiation process of the terminal, and decides to start according to the codec information used The process of encoding conversion function, the specific process is described as follows:

[0081] Step 401, and image 3 The same as step 301;

[0082] Step 402, IMS-ALG1 receives the media resource request, changes the media address in it to the media address of TrGW1, and adds the codec information supported by TrGW2 in the request (excluding those already supported by UE1, because UE1 supports The codec does not need a codec function), and at the same time add the media address of TrGW2 in the request, and then forward the media resource request, the newly added codec information and the newly added media address of TrGW2 are ad...

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Abstract

The present disclosure provides an IMS media codec negotiation method, which is used in an IMS network. The method comprises: when forwarding a media resource request, a first signaling media network element carries a media address of a second media gateway and a codec supported by the second media gateway into the media resource request, wherein the second media gateway is controlled by the first signaling media network element and is used for code transition; when receiving a media resource response, the first signaling media network element takes the second media gateway as a node of a media path in the case that the media resource response information related to the second media gateway. An IMS media codec negotiation system is also provided by the present disclosure. The method and system mentioned in the present disclosure can realize media codec negotiation via interaction of the media resource request and response for only one time, therefore, the signaling overhead is reduced, and the user experience is improved.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and system for negotiating an IP (Internet Protocol, Internet Protocol) multimedia subsystem (IP Multimedia Core Network Subsystem, IMS for short) media codec. Background technique [0002] IP (Internet Protocol, Internet Protocol) multimedia subsystem (IP Multimedia CoreNetwork Subsystem, referred to as IMS) is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3rd Generation Partnership Project, referred to as 3GPP). An open and flexible service environment supports multimedia applications and can provide users with rich multimedia services. [0003] In the IMS service system, the control layer and the service layer are separated, and the control layer does not provide specific services, but only provides necessary functions such as triggering, routing, and charging to the service layer. The service triggering and control f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L65/1016H04L69/24H04L65/103H04L65/104H04L65/80H04L65/1069
Inventor 谢振华
Owner ZTE CORP
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