Method and system for realizing network address convert traversing

A network address translation and media gateway technology, applied in the field of next-generation networks, can solve the problems of no media stream, unable to send media stream to private network, affecting the stability of media stream transmission in NGN network, etc., and achieve the effect of improving stability.

CN101257433BActive Publication Date: 2011-09-14HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2011-09-14

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Abstract

A method for achieving net address translation (NAT) penetration is disclosed in the invention. A first media gateway (MGW) and an interactive conduction establishing (ICE) mechanism supporting device respectively obtain candidate information from the local side and the opposite side; conduction detection is performed on the first MGW and the opposite ICE mechanism supporting device based on the candidate information; the first MGW and the opposite ICE mechanism supporting device transmit the media stream according to the conduction detection result. The embodiment of the invention further discloses a system for achieving NAT penetration. Due to the method and the system, the stability of the media stream transmission in the next-generation network (NGW) containing a media gateway controller (MGC) and MGW is improved.
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Description

technical field

[0001] The invention relates to the next generation network technology, in particular to a method and system for realizing network address translation (NAT) traversal in the next generation network. Background technique

[0002] The Next Generation Network (NGN) is the product of the integration of the Public Switched Telephone Network (PSTN) based on Time Division Multiplexing (TDM) and the packet network based on Internet Protocol / Asynchronous Transfer Mode (IP / ATM). Integrated services such as voice, video, and data information have become possible, marking the arrival of a new generation of telecommunication network era.

[0003] figure 1 It is a schematic diagram of the existing NGN network structure, such as figure 1 As shown, the NGN network mainly includes a media gateway (MGW) and a media gateway controller (MGC). Among them, MGC is used to realize the management of call state and the control of MGW bearer resources; MGW is used to convert the med...

Examples

Embodiment Construction

[0033] 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.

[0034] Just because the NGN network in the prior art has the defect that the stability of media stream transmission cannot be guaranteed when implementing NAT traversal, so this application hopes to propose a NAT traversal method different from the prior art, so as to improve the efficiency of NGN, etc. The stability of media stream transmission in the network of MGW.

[0035] At present, there is an Interactive Connectivity Establishment (ICE, Interactive Connectivity Establishment, the latest version is draft-ietf-mmusic-ice-13) mechanism, which can better solve the problem of SIP-based NAT traversal, and its implementation idea is : Integrate existing NAT traversal methods such as STUN and TURN, generate a candidate (candidate) list through STUN or T...