Centralized selection of peers as media data sources in a dispersed peer network

Patent metadata

Field	Value
Publication number	US-9894176-B2
Application number	US-201414573557-A
Country	US
Kind code	B2
Filing date	Dec 17, 2014
Priority date	Apr 26, 2002
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A multi-source peer content distribution system transfers content files from multiple, distributed peer computers to any requesting computer. The content distribution network coordinates file transfers through a mediation system including a content catalog and a host broker system. The content catalog contains an identification of each content file, the segmented subunits of each file, and the peer caches to which the subunits have been distributed. The host broker system receives content file requests issued over a network from requesting computers. In response, manifest files identifying the request corresponding content subunits and distributed cache locations are returned. The requesting computers can then retrieve and assemble the corresponding content subunits from the peer computers to obtain the requested content file.

First claim

The invention claimed is:

1. A method of enabling streaming of a distributed content file accessible for use within a network of computer end user nodes wherein the content file is distributed such that a different set of one or more segments of the content file is stored at each end user node, and at least one segment of the content file is stored at more than one end user node, and wherein the computer end user nodes are interconnected by a communications network, and wherein sending the segments of the content file is controlled by a server node that determines a distribution pattern of the segments of the content file, said method comprising:
in response to a request from a requesting node for the content file, generating a list of end user nodes from which the requesting node can download the segments of the content file; and
sending the list of end user nodes to the requesting node, wherein the distribution pattern is based on performance information corresponding to each of the end user nodes, the performance information comprising, for each end user node, connection latency and reliability of the requesting node downloading the segments of the content file from the respective end user node.

2. The method of claim 1 , wherein the list of end user nodes includes a selected subset of the end user nodes from which the requesting node can download the segments of the content file.

3. The method of claim 1 , wherein sending the list of end user nodes to the requesting node enables the authentication of the segments of the content file transferred to the requesting node.

4. The method of claim 1 , further comprising monitoring the performance of the segment transfers.

5. The method of claim 1 , further comprising sending the segments of the content file to the multiple end user nodes, wherein sending the segments of the content file is controlled by update messages received by the server node, and wherein the server node determines the distribution pattern of the segments of the content file based upon the update messages.

6. The method of claim 5 , wherein the update messages are transmitted periodically.

7. The method of claim 1 , wherein the request from the requesting node for the content file is received over the communications network, and wherein the list of end user nodes is sent to the requesting node over the communications network.

8. The method of claim 1 , wherein the list of end user nodes is generated specifically for the requesting node.

9. A method of enabling streaming of a distributed content file accessible for use within a network of computer end user nodes wherein the content file is distributed such that a different set of one or more segments of the content file is stored at each end user node, and at least one segment of the content file is stored at more than one end user node, and wherein the computer end user nodes are interconnected by a communications network, and wherein sending the segments of the content file is controlled by a server node that determines a distribution pattern of the segments of the content file, said method comprising:
in response to a request from a requesting node for the content file, generating a list of end user nodes from which the requesting node can download the segments of the content file; and
sending the list of end user nodes to the requesting node, wherein the distribution pattern of the segments of the content file is determined progressively based at least in part on an ongoing analysis of the network of end user nodes.

10. The method of claim 9 , wherein sending the segments of the content file to the multiple end user nodes includes redistributing previously distributed segments of the content file.

11. The method of claim 9 , wherein the list of end user nodes includes a selected subset of the end user nodes from which the requesting node can download the segments of the content file.

12. The method of claim 9 , wherein sending the list of end user nodes to the requesting node enables the authentication of the segments of the content file transferred to the requesting node.

13. The method of claim 9 , further comprising monitoring the performance of the segment transfers.

14. The method of claim 9 , further comprising sending the segments of the content file to the multiple end user nodes, wherein sending the segments of the content file is controlled by update messages received by the server node, and wherein the server node determines the distribution pattern of the segments of the content file based upon the update messages.

15. The method of claim 14 , wherein the update messages are transmitted periodically.

16. The method of claim 9 , wherein the request from the requesting node for the content file is received over the communications network, and wherein the list of end user nodes is sent to the requesting node over the communications network.

17. The method of claim 9 , wherein the list of end user nodes is generated specifically for the requesting node.

Assignees

• Sony Corp

Inventors

• Hudson Michael D
• Windheim Brian L
• Stewart Darin L
• Menon Sudhir
• Goschie Mark W
• Shipley Glen Curtis

Classifications

• H04L67/1063

  Discovery through centralising entities · CPC title

• D01D5/423

  by fibrillation of films or filaments · CPC title

• H04L67/1044

  Group management mechanisms  (management of multicast group membership H04L12/185; reconfiguring of node membership in a computing system to eliminate errors G06F11/1425) · CPC title

• H04L67/1076

  Resource dissemination mechanisms or network resource keeping policies for optimal resource availability in the overlay network · CPC title

• H04L67/108

  characterised by resources being split in blocks or fragments · CPC title