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Improved FEC algorithm and device thereof

An improved, algorithmic technology, applied in digital transmission systems, electrical components, error prevention, etc., to solve problems such as packet loss and stuck in video conferences

Inactive Publication Date: 2020-04-07
BEIJING MYSHER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an improved FEC algorithm to solve the problem of easy packet loss and jamming in current video conferencing

Method used

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  • Improved FEC algorithm and device thereof
  • Improved FEC algorithm and device thereof
  • Improved FEC algorithm and device thereof

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Embodiment Construction

[0064] Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.

[0065] FEC is a forward error correction technology. The sender sends the data to be sent together with a certain redundant error correction code, and the receiver performs error detection on the received data according to the error correction code. If an error is found, then Error correction is performed by the receiver. It is characterized by the use of error-correcting codes, single-channel communication, and the sender does not need to set a buffer, which is especially suitable for the field of real-time audio and video communication.

[0066] ULPFEC is implemented in the latest WebRTC version, but basically only supports about 2% packet loss coverage. In the domestic public network upload environment, the cross-regional transmission is often much greater than 2%. In video conferences, packet loss and stutteri...

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Abstract

The invention provides an improved FEC algorithm and device, and the method comprises the steps: carrying out the grouping of to-be-transmitted data, wherein each group comprises k media data packagesand r FEC redundant packages, and respectively carrying out the continuous numbering of the media data packages and the FEC redundant packages; receiving the transmitted data, performing continuous number verification on the media data packets and the FEC redundant packets, and determining a lost number; and recovering the media data packet corresponding to the lost number according to a predetermined rule. By grouping to-be-transmitted data, each group comprises k media data packets and r FEC redundant packets; after the data is received, the media data packets and the FEC redundant packetswhich are continuously numbered are verified, so that the loss condition of the data packets in each group can be quickly judged, and the media packets are selectively recovered.

Description

technical field [0001] The invention relates to an improved FEC algorithm and its device. Background technique [0002] Forward error correction is also called forward error correction code (Forward Error Correction, referred to as FEC), which is a method to increase the reliability of data communication. In a one-way communication channel, once an error is detected, its receiver has no right to request transmission. FEC is a method of using data to transmit redundant information. When an error occurs during transmission, it will allow the receiver to reconstruct the data. [0003] Forward error correction is an error control method, which means that the signal is encoded according to a certain algorithm before being sent to the transmission channel, and the redundant code with the characteristics of the signal itself is added, and the received signal is corrected according to the corresponding algorithm at the receiving end. It is a technology to decode the signal to find...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/0047
Inventor 张龙彬何佳文
Owner BEIJING MYSHER TECH