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A method of p2p streaming media transmission based on svc

A technology of streaming media transmission and transmission method, applied in the field of digital information transmission, which can solve the problems of media bit rate, inconsistent resolution, inability for users to specify levels, and unclear concept of service quality.

Inactive Publication Date: 2012-02-01
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method makes the system optimal according to user parameters and network conditions as a whole, it does not target individual users, that is, users cannot specify a level and switch the selection when receiving services.
At the same time, the concept of quality of service mentioned in this method is not clear, and it only uses delay as an example of quality standards, which is inconsistent with the media bit rate and resolution actually required by users

Method used

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  • A method of p2p streaming media transmission based on svc
  • A method of p2p streaming media transmission based on svc
  • A method of p2p streaming media transmission based on svc

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Embodiment Construction

[0061] The present invention will be further described below in conjunction with the accompanying drawings.

[0062] Refer to attached figure 2 , the SPM coverage tree has three categories, including three hidden coverage trees, which distribute the data of the base layer (BL), enhancement layer (EL1), and enhancement layer (EL2) respectively.

[0063] Refer to attached image 3 The process of node host N joining the SPM overlay tree is as follows:

[0064] Node N first determines its own category, that is, how many enhancement layers it needs to accept. Then randomly obtain a list of nodes satisfying as a parent node from RP, such as B, C, K, I. Ping all the nodes, and then select k nodes from them to join the nearest set. Here, it is assumed that k=2, and B and K are selected as the selected nearest set. Then ping all nodes (A, C, D) that are connected to B, K and satisfy the condition of the parent node, and then select a new closest set from all these nodes. After mu...

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Abstract

The invention discloses a P2P streaming media transmission method based on SVC. During the P2P streaming media transmission process, SIM (Scalable Island Mutilcast) and SVC (Scalable Video Coding) technologies are integrated, which we call SPM. In SPM, hosts belong to different categories, and can specify the quality of media streams by themselves, and receive data from the base layer and one or more enhancement layers to obtain different media qualities. SPM also provides a series of uninterrupted media flow solutions with priority on continuity.

Description

technical field [0001] The present invention relates to digital information transmission technology, in particular to a P2P streaming media transmission technology based on SVC. Background technique [0002] With the popularization of broadband networks, multimedia streaming services such as IPTV and VOD are favored by more and more users. And users have put forward more and more requirements for service quality and service types. The traditional server-based network model is slowly replaced by P2P streaming due to the limitation of server bottlenecks. By sharing the system load to the entire network, the P2P streaming model has strong scalability. [0003] Currently, P2P streaming models are mainly divided into two categories. One is to build a multi-layer overlay tree, and distribute the media stream to every host on the tree starting from the root node. This type of model considers how to distribute media streams to each node host better and faster, so it is usually a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/63H04L29/08
Inventor 罗笑南林凯雄余奇明
Owner SUN YAT SEN UNIV