Video on-demand method and system based on network encoding/decoding and cooperative distribution

Abstract

The invention discloses a video on-demand method and system based on network encoding / decoding and cooperative distribution. The system comprises a client and a server-side, the server-side slices a file; the client can acquire multiple slices in order and play the slice when the single slice is completely acquired, wherein the acquisition of the single slice comprises the following steps: acquiring cooperative node information corresponding to one slice from the server-side; acquiring a data packet of the slice after the network encoding through the UDP connection until a corresponding sliceis obtained by performing joint decoding according to all received data packets from different nodes from the server-side and from the cooperative node based on the cooperative node information; two TCPs and one UDP are included between the client and the server-side and between the clients; the UDP is used for transmitting the data packet, and one TCP connection is used for transmitting a controlsignaling, and the other TCP connection is used for transmitting an active signal. Through the method disclosed by the invention, the data transmission reliability is guaranteed, the data retransmission is avoided, the data transmission rate and the decoding speed are improved, and the load pressure of the server-side is reduced.

Description

technical field [0001] The invention relates to the application field of communication technology, in particular to a video-on-demand method based on network codec and cooperative distribution. Background technique [0002] With the rapid development of mobile communication technology, video services occupy a large amount of total market traffic, so it is extremely urgent to research and implement a content distribution network architecture that is suitable for different user requests and meets multiple concurrent requirements. At present, a separate TCP or a separate UDP transmission method is used in video on demand, but these two methods have their own shortcomings. TCP needs to continuously send feedback information such as ACK, so it will waste a lot of resources and cause time delay. The problem is that although UDP does not need to send ACK feedback information, it has the problem of packet loss, so it is inevitable to retransmit the data, which will also cause delay ...

AI Technical Summary

Problems solved by technology

At present, a separate TCP or a separate UDP transmission method is used in video on demand, but these two methods have their own shortcomings. TCP needs to continuously send feedback information such as ACK, so it will waste a lot of resources and cause time delay. Problem, in addition, although UDP does not need to send ACK feedback information, it has a problem of packet loss, so it is inevitable to retransmit data, which will also cause delay problems

Images