A video content service system and service method

Abstract

The invention relates to a system and a method for service of video contents. A video loading node and the video service node adopt a P2P protocol to form a P2P-CDN network. The CDN network is divided into a plurality of assignment service areas; each client is allocated with an assignment CDN node; the video client is connected with an assignment CDN node through the network. When a user requests media displaying, the video client sends media search information to the assignment CDN node according to a P2P search protocol. The assignment CDN node selects a service node in the whole P2P-CDN and returns the node to the client. The client generates a media service request toward the service node and builds up a control link with control units and a plurality of data links with a plurality of media units, and media data is requested through the links. The invention solves problems such as scale expansibility of the CDN network, enhances the reliability of the system and reduces the maintenance cost of the system.

Description

technical field [0001] The present invention relates to video content service of distributed streaming media system, such as IPTV (Internet Protocol TeleVision, TV service or system based on IP protocol) video content service. Background technique [0002] Distributed streaming media systems (such as IPTV systems) need to access massive video content from multiple content sources, and their capacity will reach hundreds of T or even thousands of T. The original system construction scheme based on traditional CDN (Content Delivery Network, content distribution network) plus clustered streaming media server has been unable to meet the requirements of construction cost, storage capacity, network overhead, concurrency, reliability, scalability and operation and maintenance. Satisfy carrier-class operation requirements. [0003] The traditional CDN system adopts hierarchical tree networking technology. Nodes are divided into core nodes, sub-core nodes and edge nodes. Core nodes s...

AI Technical Summary

Problems solved by technology

[0004] 1. Poor scalability of media capacity: When the capacity of media content needs to increase, the capacity of various nodes needs to be expanded proportionally, which brings difficulties to the expansion of media capacity;

[0005] 2. Poor scalability of user scale: When user scale expands, not only need to increase or expand the processing capabilities of edge nodes, but also need to simultaneously expand the processing capabilities of sub-core nodes and core nodes, which also brings difficulties to user scale expansion;

[0006] 3. Poor reliability: tree networking inevitably brings about single point of failure;

[0007] 4. High network bandwidth consumption: Due to the re-aggregation effect of the tree network, the network bandwidth consumption of core nodes and sub-core nodes is large;

[0008] 5. The entire CDN network needs to be manually configured and managed, making operation and maintenance difficult;

[0009] 6. The above factors lead to high network construction costs

[0010] In order to solve the service capability of hot content, traditional cluster streaming media servers require the cluster to store multiple copies of hot content, supplemented by complex balanced scheduling and content real-time scheduling strategies, which not only wastes storage space, but also increases system complexity and Internal scheduling overhead reduces concurrency performance and ultimately leads to high construction costs

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