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Packet transmission method and network node device

A message transmission and message technology, which is applied in the field of network communication, can solve the problems of occupying network bandwidth resources, not being able to perceive the deterioration of link transmission quality, and the context and session environment being out of sync, so as to reduce the frequency of occupying network bandwidth resources, Solve the effect of session environment out of sync

Active Publication Date: 2008-04-09
HUAWEI TECH CO LTD
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  • Description
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AI Technical Summary

Problems solved by technology

[0009] The present invention provides a message transmission method and a network node device, which are used to solve the problem that in the prior art, when the quality of the physical link continues to deteriorate, the decompression end needs to send a large number of CONTEXT_STATE messages in reverse, which leads to the occupation of network bandwidth resources, and due to The compression end cannot perceive the deterioration of the current transmission quality of the link. Even if the decompression end frequently sends CONTEXT_STATE messages, it still cannot solve the problem of out-of-sync context conversations

Method used

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  • Packet transmission method and network node device
  • Packet transmission method and network node device
  • Packet transmission method and network node device

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Embodiment Construction

[0033] In order to illustrate the embodiment of the present invention more clearly and conveniently, the network node that uses the cRTP protocol to compress the IP / UDP / RTP message header is called the compression end, and it is also the message sending end. Correspondingly, the compressed message is decompressed The network node is called the decompression end, and it is also the message receiving end. In the actual network, the compression end and the decompression end are two peer nodes in the network, and they are not absolutely distinguished. According to the compression and decompression of the compressed message The situation and the specific direction of the compressed message transmission, the two ends can also be interchanged.

[0034] A message transmission method and a network node device provided in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] A message transmission method provided b...

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Abstract

The invention discloses a message transmission method and a network node device. When the link transmission quality continues deterioration, the device informs an compression terminal to directly transmit uncompressed complete message, and when the compression terminal detects the link transmission quality is recovered, the device informs the compression terminal to recover transmission of compressed message, so as to properly reduce the frequency of the decompression terminal reversely transmitting CONTEXT_STATE message to the compression terminal when the link transmission quality continues deterioration, reduce the frequency of the reversely transmitted CONTEXT_STATE message occupying network bandwidth resource, and, to some extent, solve the lost synchronization problem of the context session content when the link transmission quality continues deterioration.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a message transmission method and a network node device. Background technique [0002] In the Next Generation Network (NGN, Next Generation Network), many operators have a shortage of transmission resources. For example, in the IP NGN service, the IP / UDP / RTP packet header has nearly 40 bytes, but for a good voice coding algorithm, the actual voice data in each packet is generally less than 30 bytes, so the When IP carries voice packets, compared with the actual voice data, the packet header overhead is too large, and the transmission efficiency is too low. Based on the above situation, the Internet Engineering Task Force (IETF, Internet Engineering Task Force) has developed a series of RFC standards to solve this problem. Among them, the RFC2508 standard for the compression of IP / UDP / RTP packet headers under low-speed serial links (cRTP, Compressing IP / UDP / RTP Hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/725
Inventor 王莉丽
Owner HUAWEI TECH CO LTD
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