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Parallel transmission dispatching method for stream media data

A technology of transmission scheduling and streaming media, which is applied in the field of parallel transmission scheduling of streaming media data, and can solve the problems of high cost and high cost

Inactive Publication Date: 2009-01-14
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The obvious disadvantage of this solution is that the cost is very high, and servers need to be set up everywhere where there is business, and high fees must be paid for the purchase of bandwidth every year.

Method used

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  • Parallel transmission dispatching method for stream media data
  • Parallel transmission dispatching method for stream media data
  • Parallel transmission dispatching method for stream media data

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0053] The streaming media server only needs to send data out, so it only needs to deploy the sending management module, while other nodes need to receive data and send data to downstream sub-nodes, so both the sending management module and the receiving management module need to be deployed. The receiving management module deployed on the child node acts as a scheduler, and sends a scheduling command to the sending management module deployed on the parent node, and coordinates each parent node to jointly provide streaming media data for the child node.

[0054]The sending management module sends each child node in turn the data assigned to it in a GOP in each round, and piggybacks the priority MAP (buffer map) and data possession status MAP in the first packet of each GOP. After sending a GOP data for each child node, receive whether there is a new message, these messages include "new child node join message", "exit channel message" and "reallocate transmission ratio message" ...

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Abstract

A method for dispatching parallel transmission of stream media data includes setting a sending module on steam media server; setting a sending module and a receiving module separately on each node for receiving stream media data; defining parameters of rate of sending, packet size and number of sending, signal transmission time, time of data overtime and packet loss for father node on receiving module; sending command packet for distributing transmission task simultaneously to each father node according to their network property and their distribution ratio for holding maximum set distribution ratio while network stable transmission state is ensured .

Description

technical field [0001] A parallel transmission scheduling method for streaming media data belongs to the technical field of streaming media data transmission in networks. Background technique [0002] Since the media data, especially the video data, has a large volume, it takes a long time for the user to download the entire video file through the network. And if the video is compressed by streaming media technology, the user can watch the movie during the downloading process. The streaming media technology can be watched while watching, and it will not take up a lot of local hard disk space. [0003] Although streaming media technology saves time for users, it fails to solve users' bandwidth limitations. Although the development of the current video compression technology has greatly reduced the volume of video data, and its demand for bandwidth has also been greatly reduced, but at present, to watch video data with relatively ideal quality, a bit rate of about 400kbps or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/24
Inventor 徐恪崔勇孙睿王海洋
Owner TSINGHUA UNIV