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Decentralized hierarchically clustered peer-to-peer live streaming system

A group head, data technology, applied in the field of network communication

Inactive Publication Date: 2011-01-26
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is challenging for the server to split the video stream into thousands of sub-streams in real-time

Method used

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  • Decentralized hierarchically clustered peer-to-peer live streaming system
  • Decentralized hierarchically clustered peer-to-peer live streaming system
  • Decentralized hierarchically clustered peer-to-peer live streaming system

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0027] figure 2 A level 2 HCPS system is described. Peers / nodes are organized into bandwidth-balanced groups, where each group consists of a small number of peers. In the current example, 30 peers were divided equally into 6 groups. Within each group, a peer is elected as the group leader. The group head acts as a local data / video proxy server for peers in the group. "Normal" peers maintain connections within the group, but not necessarily with peers / nodes in other groups. Cluster heads not only maintain connections with peers in the cluster they lead, but also act as peers in the parent cluster from which data / videos are retrieved. For example, in figure 2 In , the group heads of all groups form two superior groups to retrieve data / video from the data / video source server. In the structure of the present invention, the source server distributes the data / video to the cluster head and peers of the superordinate cluster. An example Level 2 HCPS has the ability to support...

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Abstract

A method and apparatus are described including forwarding data in a transmission queue to a first peer in a same cluster, computing an average transmission queue size, comparing the average transmission queue size to a threshold, sending a signal to a cluster head based on a result of the comparison. A method and apparatus are also described including forwarding data in a transmission queue to a peer associated with an upper level peer, forwarding data in a playback buffer to a peer in a lower level cluster responsive to a first signal in a signal queue associated with the lower level cluster, determining if the playback buffer has exceeded a threshold for a period of time, sending a second signal to a source server based on a result of the determination.

Description

technical field [0001] The present invention relates to network communications, and more particularly to streaming data in peer-to-peer networks. Background technique [0002] The art shows that the maximum video streaming rate in a peer-to-peer (P2P) streaming system is determined by the capacity of the video source server, the number of peers in the system, and the total upload capacity of all peers. A centralized "full" scheduling algorithm is described to achieve the maximum flow rate. However, the "full" scheduling algorithm has two drawbacks. First, the algorithm requires a central scheduler that collects upload capacity information for all individual peers. Then, the central scheduler calculates the rate of the sub-flow sent from the source to the peer. In a "full" scheduling algorithm, the central scheduler is a single point / unit / device. As used herein, " / " represents an alternative designation for the same or similar components or structures. That is, as used h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/08H04L12/863H04L29/06H04N21/222
CPCH04L47/12H04L67/1085H04L67/108H04N21/4325H04L49/90H04L29/06462H04L47/263H04L67/104H04N21/44004H04L65/80H04N21/4788H04L47/10H04L29/06523H04N21/222H04L29/08477H04L29/08495H04L29/08306H04L65/4084H04L65/612
Inventor 郭阳梁超刘勇
Owner THOMSON LICENSING SA