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Forward error correction method and system based on docking of VOIP application end and telecommunication network

A forward error correction, application-side technology, applied in the field of communications, can solve the problems of voice quality degradation, inability to carry forward error correction information, abnormal decoding at the telecommunication end, etc., to avoid packet loss and sound quality degradation.

Inactive Publication Date: 2015-04-29
SHENZHEN YUNZHIXUN NETWORK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Usually, when VOIP-based voice applications communicate with the telecommunication network, because the telecommunication network is an uncontrollable party, usually VOIP voice applications cannot carry forward error correction information, otherwise it will cause abnormal decoding at the telecommunication terminal, but if Does not carry redundant information, and will cause voice quality degradation due to factors such as network packet loss

Method used

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  • Forward error correction method and system based on docking of VOIP application end and telecommunication network
  • Forward error correction method and system based on docking of VOIP application end and telecommunication network

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Embodiment Construction

[0034] Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further:

[0035] see figure 1 and figure 2 , the forward error correction method based on the docking of the VOIP application terminal and the telecommunication network of the present embodiment includes an uplink forward error correction step and a downlink forward error correction step, wherein the uplink forward error correction step includes the following sub-steps:

[0036] Step s1: The VOIP application side copies the full payload of the RTP message of the previous frame after the RTP message of the current frame, and attaches a forward error correction header between the header and the payload of the RTP message of the current frame information, to form a combined RTP packet whose format is "the header of the current frame RTP message+the forward error correction header information+the payload of the current frame RTP message+the payload of the last fram...

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Abstract

The invention relates to a forward error correction method and system based on docking of a VOIP application end and a telecommunication network. The forward error correction method includes the step of uplink forward error correction and the step of downlink forward error correction, wherein the step of uplink forward error correction includes that the VOIP application end copies effective load of an RTP (real time protocol) message of a previous frame to an RTP message of a current frame and adds forward error correction header information between a header of the RTP message of the current frame and the effective load to form a combined RTP message packet, a media transit server receives the combined RTP message packet from the VOIP application end, analyzes the same, recognizes the RTP message of the current frame in the combined RTP message packet through the forward error correction header information and forwards the RTP message of the current frame to a telecommunication network end. By the forward error correction method and system, network packet loss can be reduced, voice quality decrease is prevented, and decoding abnormality of the telecommunication network end can be avoided.

Description

technical field [0001] The invention relates to the communication field, in particular to a forward error correction method based on interconnection between the Internet and an electrical network. Background technique [0002] Usually, when VOIP-based voice applications communicate with the telecommunication network, because the telecommunication network is an uncontrollable party, usually VOIP voice applications cannot carry forward error correction information, otherwise it will cause abnormal decoding at the telecommunication terminal, but if Does not carry redundant information, and will cause voice quality degradation due to network packet loss and other factors. Contents of the invention [0003] In view of the problems in the prior art, one of the purposes of the present invention is to provide a forward error correction method based on the docking of the VOIP application terminal and the telecommunication network, which can reduce network packet loss and prevent vo...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04M7/00
CPCH04L1/004H04L1/0041H04L65/1069H04L65/65
Inventor 吴朝阳
Owner SHENZHEN YUNZHIXUN NETWORK TECH