Data transmission control method and device

Abstract

The invention discloses a data transmission control method and device, and aims to solve the problems that in the prior art, during data transmission of a point-to-point streaming media system, streaming media data acquired on a request node is incontinuous, and thus video playing on the request node is not smooth and the system performance is reduced. The data transmission control method comprises the following steps: after a data node receives a data request message sent by the request node, acquiring a data block needed by the request node based on the data request message, dividing the data block into a plurality of single pieces, and acquiring a target request node according to the request node, and sending the single pieces to the target request node by the data node. According to the technical scheme, after the data node divides the data block requested by the request node into the single pieces, and all the single pieces are sequentially transmitted to the corresponding request node, the problem of network congestion caused by a relatively small network bandwidth is avoided, the video playing smoothness of the request node is guaranteed, and the system performance is effectively improved.

Description

technical field [0001] The invention relates to the field of multimedia technology, in particular to a method and device for controlling data transmission. Background technique [0002] With the rapid development of multimedia technology, streaming media can be transmitted and played in various ways, among which, a P2P (Peer to Peer; point-to-point) streaming media system is a commonly used streaming media transmission and playback system. [0003] In the existing P2P streaming media system, the streaming media content is cut into multiple data blocks (chunk), and each data block is used as the basic unit of streaming media data transmission, so as to complete the transmission of continuous data streams between nodes (Peer) , where each data block is represented by a unique chunk id. The sharing and exchange of program content all depend on the buffer message (abbreviated as BM) exchanged between nodes to describe the buffer state of the node, that is, the sharing and excha...

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a method and device for controlling data transmission, which are used to solve the problem of discontinuous acquisition of streaming media data on existing requesting nodes during the data transmission process of point-to-point streaming media systems in the prior art, resulting in Video playback is not smooth, reducing system performance

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