Process and system for media flow transverse network address conversion

A media stream and media technology, applied in the field of communication, can solve problems such as incorrect forwarding of media streams, and achieve the effect of improving system efficiency and simplifying the processing flow

Inactive Publication Date: 2007-09-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0027] The present invention provides a method for media stream traversing network address translation to solve the problem that the

Method used

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  • Process and system for media flow transverse network address conversion
  • Process and system for media flow transverse network address conversion
  • Process and system for media flow transverse network address conversion

Examples

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[0071] In order to solve the problem of media stream transmission caused by the overlapping of different user addresses, the present invention binds an identifier that can identify the network where the user is located when establishing a media stream mapping relationship for forwarding the media stream. Further, when the media stream is subsequently forwarded, the source address in the media stream and the identifier that can identify the network where the user is located match the media stream mapping relationship to determine the port for forwarding the media.

[0072] This embodiment mainly takes a virtual local area network VLAN user using an IMS service as an example for detailed description, where the identifier that can identify the network where the user is located is a VLAN identifier.

[0073] Referring to FIG. 7A, users of different VLANs access the boundary network function BGF (or Policy Enforcement Function, PEF) through different physical ports, and the BGF acts as...

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Abstract

The disclosed address conversion method for media flow crossing network comprises: it transmits user media flow to the BGF entity; the latter matches the media mapping relation binding with media mapping message according to mark and original address in media to determine the port, and transmits the media flow. It also discloses a network system for the address conversion.

Description

technical field [0001] The invention relates to the network address translation technology in the communication field, in particular to a method and system for media stream traversal network address translation. Background technique [0002] IMS is a subsystem supporting IP multimedia services proposed by the third generation mobile communication partner organization. IMS uses the SIP call control mechanism to create, manage and terminate various types of multimedia services. This kind of multimedia communication is not only simple video and audio communication, but also includes instant messaging, co-site browsing, collaborative work, streaming media and other services, especially the services of new communication methods and traditional voice integration. It can be said that IMS provides service integration. Foundation. [0003] An important feature of IMS is its wide adaptability to various access technologies. At present, the IMS proposed by 3GPP can support 2G and 3G...

Claims

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Application Information

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IPC IPC(8): H04L12/66H04L12/24
CPCH04L12/4625H04L61/2564H04L29/125
Inventor 丁晓强简海燕孟庆锋苏炜刘慈文楷黄福清薛莉莉
Owner HUAWEI TECH CO LTD
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