Peer-to-peer (P2P) streaming media video-on-demand system and data transmission method thereof

Abstract

The invention discloses a peer-to-peer (P2P) streaming media video-on-demand system and a data transmission method thereof. The method comprises the following steps that: a publish node publishes a video file, establishes a data segmentation information table for the file according to a timestamp, and stores the data segmentation information table into a cache; a P2P node applies for a corresponding file segmentation information table from the publish node or other P2P nodes having file segmentation information of a broadcast file when requesting the broadcast of the file so as to establish an own cache manager information table and to store information lists of files to be downloaded; the P2P node establishes a cache manager according to the cache manager information table to manage the data in the cache manager information table and to manage and store cache areas of actual video data; the P2P node establishes a scheduler and starts a relevant route to produce a time slot task downloading queue; the scheduler selects the data to be downloaded according to the time slot task downloading queue, selects a reliable transmission source to download the data, and stores the downloaded data into the cache.

Description

technical field [0001] The invention relates to the technical field of network multimedia, in particular to a P2P stream media on-demand system and a data transmission method thereof. Background technique [0002] With the rapid development of Internet and digital technology, P2P technology has been widely used as a digital media content distribution technology. P2P is the abbreviation of English Peer-to-Peer, also known as "peer-to-peer". "Peer-to-peer" technology is a new network technology. Different from the traditional C / S structure, P2P technology makes full use of the computing power and bandwidth of users in the network, instead of gathering service requirements on fewer servers. At the same time, it also provides uploading services for other users. In this way of downloading, the more people there are, the faster the speed will be. Generally speaking, as the number of users increases, the system's service capabilities will also increase, with good scalability and ...

AI Technical Summary

Problems solved by technology

However, such a segmentation method is relatively rough. In a disordered P2P network, sometimes problems such as packet loss, frame loss, and even block file loss may occur due to network problems.

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