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Media positioning, searching method and system

A technology of a positioning method and a search method, applied in the IPTV field, can solve the problem of not considering the information of nodes after media file fragmentation, and achieve the effect of improving the efficiency and speed of media delivery

Inactive Publication Date: 2009-03-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing P2P technology does not consider the information that the nodes after the media file fragmentation depend on

Method used

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  • Media positioning, searching method and system
  • Media positioning, searching method and system
  • Media positioning, searching method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Such as figure 1 and image 3 , the "node dependence" mentioned here means: the standby service provider node of the node may not be the neighbor node of the node; it is only provided by the dependent node of the node when the node cannot provide services to the user. Users provide services.

[0062] The media positioning method provided in this embodiment has the following steps:

[0063] Step 1, the CDN Manager / CDN Agent obtains the node dependency information and network topology information of each peer node Peer within the service range, the node dependency information includes information such as dependent node IP, dependent node IP, and the network topology information includes IP address, geographic location, affiliated unit, management personnel, etc.; the IP address of each peer node Peer can be obtained by using network management protocols such as SNMP protocol and CMIP protocol, or can be obtained by manual configuration.

[0064] Step 2, according to th...

Embodiment 2

[0076] Such as figure 1 and Figure 4 , the media search method provided by the present embodiment includes the following steps:

[0077] 1) A certain peer node is a content acquisition node, and the content acquisition node sends a request to the media index server of the CDN Agent to obtain a specific content, and the request includes the name of the specific content to be obtained (for example, movie: hero) , this name can be a text identifier, a number, a special symbol, etc. For the sake of easy understanding, the peer node that requests content here is called a content acquisition node;

[0078] 2) After the CDN Agent receives the request sent in step 1), it searches in the media content state storehouse to find out the addresses of all content peer nodes that can currently provide the specific media content;

[0079] 3) Among the peer-to-peer node addresses found in step 2), sort according to the optimal principle, take the first N addresses as the node list of optima...

Embodiment 3

[0083] Embodiment 3: This embodiment combines the node dependency information and the network topology information with the P2P network based on the node dependency information and the network topology information, especially applies the node dependency information to the media delivery of the IPTV system.

[0084] figure 2 It is an application scenario of the media delivery system of the present invention. It is a community network composed of switches. On the physical network, the network topology server, CDN Agent and peer nodes are distributed as shown in the figure. The system includes a switch, a global manager, a local agent CDN Manager / CDN Agent, a media server, a network topology server, a node-dependent server, and a peer node, wherein,

[0085] The media server is used for relaying live TV channels, storing media files and channel streams to realize TVOD and time-shifted TV;

[0086] The node dependency server is used to store the node dependency information of ea...

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Abstract

The invention provides a media location and searching method and a system. Based on node dependence and network topologic information, the method relates to a CDN Manager / CDN Agent and peer nodes. The CDN Manager / CDN Agent at least comprises node dependence information, network topologic information and media location information, and a global manager and a local agent CDN Manager / CDN Agent acquire the node dependence information and the network topologic information of each peer node in a service range to generate a physical network topologic graph. A physical network topologic information library is constructed in the network topologic server, and a media state library is established in the global manager and the local agent CDN Manager / CDN Agent. The method can fully exert the advantages of P2P technology, and can improve the delivery efficiency and speed of IPTV media.

Description

Technical field: [0001] The present invention relates to the field of IPTV, in particular, the present invention relates to a method and system for realizing IPTV media positioning and searching by utilizing P2P technology, node dependence and network topology information. Background technique: [0002] At present, in the field of media delivery systems of IPTV systems, two methods are generally adopted: (1) based on traditional CDN technology; (2) based on P2P distributed technology. [0003] In the field of the media delivery system of the IPTV system, there are attempts to combine CDN technology and P2P technology for media content search, that is, to set up server buffer nodes (capable of long-term user terminal height), which is a hybrid IPTV media delivery system. CDN technology is based on the traditional client / server (C / S) model, combined with proxy / cache technology, which was first applied to WEB services, VOD services, etc., but is often limited by the processing...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L12/24H04N7/00H04N21/63H04N21/643
Inventor 李木金
Owner ZTE CORP
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