Error correcting coding method, device and system, and forwarding control method and device

Abstract

The invention discloses an error correcting coding method, comprising the steps: acquiring frame type to which the contents of media data messages belong, wherein the frame type comprises a basic frame and a predicative frame; implementing error correcting coding with different redundancy on the media data message with the basic frame as the content and on the media data message with the predicative frame as the content, wherein the redundancy of the error correcting coding, to which the media data message with the basic frame as the content is corresponding, is larger than that of the error correcting coding, to which the media data message with the predicative frame as the content is corresponding. The invention further provides a forwarding control method, a forwarding control device as well as an error correcting coding device and an error correcting coding system. According to the technical proposal provided by the embodiment of the invention, the basic frame in media data can be protected to a maximal extent and network resource can be saved in case of enhancing the transmission quality of the media data.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to an error correction coding method and device, a system, and a forwarding control method and device. Background technique [0002] With the rapid development of network technology, video applications on communication networks are gradually increasing, and improving the quality of video transmission is an important issue. Due to the real-time requirements of the video service, the transport layer of the communication network generally uses RTP (Real-time Transport Protocol, real-time transport protocol) packets to transmit media data. The headend encodes the media data to generate a media data packet suitable for transmission on the network. The RTP packet is a type of media data packet. The media data message is encapsulated and transmitted in the form of a UDP (User Datagram Protocol, User Datagram Protocol) datagram. UDP is a connectionless and unreliable transmi...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the encoding error correction method in the prior art cannot guarantee the video quality very well, the present invention provides a method for distinguishing the frame types in the media data message, and performing a process for media data messages of different frame types in the media data message. The method of error correction coding with different redundancy enhances the protection of important frames, thus ensuring the video quality at the receiving end

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