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Encoding method, encoding sending device and system for data transmission

A technology of data transmission and coding method, which is applied in the field of audio and video data packet coding processing in the process of multimedia data transmission, and can solve the problem of difficult balance between packet loss recovery effect and coding efficiency

Active Publication Date: 2021-03-02
SHENZHEN GRANDSTREAM NETWORKS TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current FEC coding design has the difficulty of achieving a balance between packet loss recovery effect and coding efficiency

Method used

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  • Encoding method, encoding sending device and system for data transmission
  • Encoding method, encoding sending device and system for data transmission
  • Encoding method, encoding sending device and system for data transmission

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Embodiment Construction

[0029] The solution provided by the present invention selects the best RS coding mode according to the statistical packet loss rate when the ratio of the number of redundant packets to information packets is constant, that is, to determine the optimal number of information packets and the number of redundant packets for RS coding, To perform FEC coding, the packet loss recovery rate can be guaranteed, thereby ensuring a better quality of video at the receiving end of the channel.

[0030] 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 in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] The inventive principle of the embodiment of the present invention: based on the principle that the packet loss...

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Abstract

The invention discloses a coding method for data transmission, which mainly includes the following steps: step a: setting the initial value of the predicted packet loss rate and FEC redundancy r; step b: coding the data at the sending end of the channel to obtain several information packets; step c: Calculate the packet loss recovery probability according to the predicted packet loss rate and FEC redundancy, and select the optimal RS coding mode RS; Step d: After performing error correction coding according to the optimal RS coding mode RS, a redundant packet is obtained; Step e : Encapsulate the coded redundant packet together with the information packet and send it, and the receiving end will update the predicted packet loss rate according to the packet loss situation of the received information packet. The solution provided by the invention ensures that the channel receiving end can recover the packet loss in the video transmission process by sending the highly-coded FEC redundant packet while sending the information packet at the channel sending end, thus ensuring the video quality at the receiving end.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to a method for encoding and processing audio and video data packets in the multimedia data transmission process. Background technique [0002] With the rapid development of network technology, streaming media technology has become one of the most popular Internet technologies at present, and it is the basis to ensure that we can share images, audio, video and other multimedia files quickly and with high fidelity. In streaming media technology, due to the large amount of data of video images and the limitation of network bandwidth, data packet loss or error is inevitable. If the packet loss of the video file (referred to as "packet loss" for short in the example of the present invention to data packet error or loss) reaches a certain level, it will seriously affect the visual effect of the video at the receiving end, block effect will occur, the video will be blurred, and even...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/2383H04N21/438H04L1/00
CPCH04L1/004H04N21/2383H04N21/4382
Inventor 羊开云高可攀徐捷陈利韩翀蛟徐晓峰李夏宾
Owner SHENZHEN GRANDSTREAM NETWORKS TECH
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