Method for scheduling P2P streaming media video data transmission

A technology of video data transmission and scheduling method, which is applied in the field of streaming media video data transmission scheduling, and can solve the problems of different importance levels of video frames and download buffer partitions

Inactive Publication Date: 2010-04-21
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0023] The invention discloses a P2P streaming media video data transmission scheduling method, which solves the problem that the existing P2P streaming media video transmission scheduling method does not take into account the different importance levels of video frames and download cache partitions, thereby effectively improving the playback continuity, and further Improve the quality of user experience

Method used

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  • Method for scheduling P2P streaming media video data transmission
  • Method for scheduling P2P streaming media video data transmission

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Embodiment Construction

[0138] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0139] T 0 : set to 30 seconds;

[0140] T 1 : set to 6 x T 0 ;

[0141] T 2 : set to 1.5 seconds;

[0142] T 3 : set to 1 / (sub-data segment playback rate×1.5);

[0143] T 4 : set to 8×(1 / sub-data segment playback rate);

[0144] T 5 : set to 12×(1 / sub-data segment playback rate);

[0145] T 6 : set to 1 / (picture group data segmentation playback rate);

[0146] T 7 : set to 40 seconds;

[0147] The download cache length n is set to 40, and the initial value of the urgent download cache length k is set to 20.

[0148] Such as figure 1 Shown, be flow chart of the present invention, its step is:

[0149] 1. In the initialization step, perform the following sub-steps:

[0150]1.1. The current peer node joins the current P2P network, periodically connects to the server, obtains and updates the list of neighbor peer nodes, and connects with ...

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Abstract

The invention relates to a method for scheduling P2P streaming media video data transmission, which belongs to a method for scheduling streaming media video data transmission and is used for transmitting streaming media video data on a network. The method solves the problems that the prior method for scheduling the P2P streaming media video transmission does not consider that video frames and downloading cache partitions have different importance degrees, thereby effectively promoting the playing continuity and further promoting the user experience quality. The method comprises the steps of initialization, startup playing and normal playing. The method can request the scheduling of an I frame subdata subsection in preference under the condition of having the same packet loss ratio, then the scheduling of a P frame subdata subsection, and finally the scheduling of a B frame subdata subsection, thereby keeping the playing continuity to the utmost extent and further effectively promoting the experience quality; besides, the method combining a sequential scheduling for an emergency download cache and a rare priority scheduling for a non-emergency download cache can reach the dynamic best compromise between the reduction of the starting time and improvement on the playing continuity and extendibility.

Description

technical field [0001] The invention belongs to a streaming media video data transmission scheduling method, in particular to a P2P streaming media video data transmission scheduling method for transmitting streaming video data on a network. Background technique [0002] In order to clearly explain the problems existing in the existing P2P streaming video data transmission scheduling, the concepts and principles involved are explained below. [0003] P2P transmission mode: that is, peer-to-peer network (Peer-to-peer) transmission mode, which breaks the server / client mode in the transmission mode and increases the direct communication mode from client to client. The peer-to-peer network consists of management servers and peer nodes, which include clients and servers that provide raw data. Each peer is on an equal footing: each peer acts as both a client (requesting data from other peers) and a server to other peers (providing data to other peers). The P2P transmission metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06H04N7/24
Inventor 黄佳庆程文青冯义雍程刚
Owner HUAZHONG UNIV OF SCI & TECH
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