WO2014117508A1 - Réseau de livraison de contenu et procédé de gestion de contenu dans un réseau de livraison de contenu - Google Patents

Réseau de livraison de contenu et procédé de gestion de contenu dans un réseau de livraison de contenu Download PDF

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Publication number
WO2014117508A1
WO2014117508A1 PCT/CN2013/082309 CN2013082309W WO2014117508A1 WO 2014117508 A1 WO2014117508 A1 WO 2014117508A1 CN 2013082309 W CN2013082309 W CN 2013082309W WO 2014117508 A1 WO2014117508 A1 WO 2014117508A1
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WIPO (PCT)
Prior art keywords
content
layer
module
capability
control
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PCT/CN2013/082309
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English (en)
Chinese (zh)
Inventor
谢恩新
熊勤
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication of WO2014117508A1 publication Critical patent/WO2014117508A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast

Definitions

  • the present invention relates to the field of multimedia services in telecommunication networks such as IPTV (Internet Protocol Television), mobile streaming media systems, and mobile phone downloads, and more particularly to a content delivery network (CDN) and in a CDN.
  • IPTV Internet Protocol Television
  • CDN content delivery network
  • CDNs In this context, the user terminals of CDNs are bound to grow on a large scale.
  • the traditional CDNs are no longer able to meet the needs of large-scale users and the needs of business development.
  • the embodiments of the present invention provide a CDN and a method for content management in a CDN, so as to overcome the defect that the traditional CDN cannot meet the needs of large-scale users and the needs of business development.
  • An embodiment of the present invention provides a content distribution network, including: a management layer, one or more control layers, and one or more capability layers; wherein each control layer corresponds to more than one capability layer;
  • the management layer includes a content management module, and the content management module is configured to: send the content injection request sent by the received content provider to the control layer; wherein the content injection request message carries the address information of the content library and Identification information of the content requested to be injected;
  • the control layer includes a content control module, and the content control module is configured to: send the received content injection request to the capability layer;
  • the capability layer includes a node storage module; the node storage module is configured to: receive control After the content injection request sent by the layer, the content is pulled from the content library to the local node storage according to the address information of the content library carried in the content injection request and the identification information of the content requested to be injected. The module is stored.
  • the capability layer further includes a node service module.
  • the node service module is configured to: after receiving the content service request sent by the user, if it is determined that the node storage module of the capability layer stores the content service request The content corresponding to the content identification information provides the user with the service of the content.
  • the node service module is further configured to: after receiving the content service request sent by the user, if it is determined that the storage resource module of the capability layer does not save the content corresponding to the content identification information carried in the content service request, Sending a relay positioning request to the control layer corresponding to the capability layer, where the relay positioning request carries the content identification information; and after receiving the relay positioning response, requesting the node service module where the requested content is located Providing the content and providing the content to the user;
  • the control layer further includes a relay positioning module; the relay positioning module is configured to: after receiving the relay positioning request, locate a node service module where the requested content is located, and locate the node service module The identification information is sent by the relay positioning response to the node service module that initiates the relay positioning request.
  • the management layer further includes a data management module; the data management module is configured to: synchronize configuration data to the control layer;
  • the control layer further includes a data control module; the data control module is configured to: synchronize configuration data related to the control layer from the management layer.
  • the capability layer further includes a node resource module, and the node resource module is configured to: calculate and report the resource data in the local capability layer to the control layer; where the resource data includes: a storage space occupancy of the node storage module and The node service module provides concurrent data of the content service;
  • the control layer further includes a resource control module, where the resource control module is configured to: collect resource data reported by all capability layers corresponding to the control layer, and report the resource data to the management layer;
  • the management layer further includes a resource management module.
  • the resource management module is configured to: collect the resource data reported by the control layer.
  • the management layer, the control layer, and the capability layer interact with each other using a transmission control protocol.
  • the embodiment of the present invention further provides a method for performing content management in a content distribution network, which is applied to the content distribution network, and includes:
  • the management sends the content injection request sent by the received content provider to the control layer, where the content injection request message carries the address information of the content library and the identification information of the content requested to be injected;
  • the control layer sends the received content injection request to the capability layer
  • the capability layer After receiving the content injection request sent by the control layer, the capability layer, according to the address information of the content library carried in the content injection request and the identification information of the content requested to be injected, from the content library. Drop the content down to the capability layer for storage.
  • the foregoing method further includes:
  • the capability layer After receiving the content service request sent by the user, the capability layer, if it is determined that the capability layer stores the content corresponding to the content identification information carried in the content service request, provides the content to the user. service.
  • the foregoing method further includes:
  • the capability layer After receiving the content service request sent by the user, the capability layer, if it is determined that the content layer does not save the content corresponding to the content identification information carried in the content service request, sends the content corresponding to the content identification information carried in the content service request to the control layer corresponding to the capability layer.
  • a relay positioning request where the relay positioning request carries the content identification information
  • control layer The ability of the control layer to locate the requested content after receiving the relay positioning request a layer, and sending, by the relay location response, identification information of the located capability layer to the capability layer that initiates the relay request;
  • the capability layer After receiving the relay location response, the capability layer requests the content layer where the requested content is located to provide the content, and provides the content to the user.
  • the foregoing method further includes:
  • the management layer synchronizes configuration data with the control layer
  • the control layer synchronizes configuration data related to the control layer from the management layer.
  • the foregoing method further includes:
  • the capability layer calculates and allocates resource data in the capability layer to the control layer.
  • the resource data includes: a storage space occupation condition of the node storage module and concurrent data of the content service provided by the node service module;
  • the management layer collects the resource data reported by the control layer.
  • the service data of all CDNs is centrally managed, and the control layer and the capability layer in the network are distributedly deployed, and some of the network elements do not cause the entire system to be abnormal.
  • the network can also extend the performance of the entire system by linearly extending the control layer and the capability layer to achieve high-performance content management and services. Multi-service users are demanding quality services.
  • FIG. 1 is a structural diagram of a CDN according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of content injection in an embodiment of the present invention.
  • FIG. 4 is a flowchart of a user on-demand service in an embodiment of the present invention.
  • FIG. 5 is a flowchart of reporting node resources in an embodiment of the present invention. Preferred embodiment of the invention
  • the top-down design is used to divide the CDN into: management layer, control layer, and capability layer; wherein, the management layer corresponds to more than one control layer, and each control layer corresponds to more than one capability.
  • the system clearly divides the boundaries of business logic, separates management functions and control functions, and separates control functions and capability functions.
  • the management is responsible for the configuration management of the CDN configuration data and provides an interface with the peripheral system, and at the same time realizes the performance query of the CDN and the formulation of the distribution strategy;
  • the control layer is responsible for providing an interface for data configuration management with the management layer, and implementing the capability layer device.
  • the capability layer is responsible for providing management interfaces with the control layer, providing storage for content, and providing media services to user terminals.
  • the content provider can inject the content into the system through the interface provided by the management layer, and distribute it to the capability layer device for storage through the algorithm control of the control layer; the user terminal locates the appropriate capability layer device for the media service through the global load
  • the management layer 1 includes: a data management module 11, a content management module 12, and a resource management module 13;
  • the control layer 2 includes: a data control module 21, a content control module 22, a resource control module 23, and a relay positioning module.
  • the capability layer 3 includes: a node storage module 31, a node service module 33, and a node resource module 32. among them:
  • the data management module 11 is responsible for configuration data management of the entire system and synchronization of configuration data with all control layers; wherein, at least the correspondence between the capability layer 3 and the control layer 2 is stored in the configuration data;
  • the content management module 12 is responsible for providing an interface for the content provider to send a content injection request, and sending the request to the control layer 2; wherein the content injection request message carries at least the address information of the content library and the identification information of the content requested for injection;
  • the resource management module 13 is responsible for collecting resource data of all control layers and capability layers;
  • the data control module 21 is responsible for saving the configuration data of the control layer 2 after receiving the configuration data sent by the data management module 11; the data control module 21 is also used for other modules of the control layer 2 Perform data interaction;
  • the content control module 22 is responsible for receiving the content injection request sent by the content management module 12, and controlling the content (for example, calculating the distribution of the content in each node storage module 31 in the capability layer 3 according to the content encoding), and injecting the content into the request.
  • the resource control module 23 is responsible for collecting the resource data reported by all the capability layers corresponding to the control layer 2, and reporting the resource data to the resource management module 13; the resource control module 23 is also used to Other modules of the control layer 2 perform data interaction;
  • the relay positioning module 24 is responsible for obtaining the node service module where the content is located according to the resource information of the node of the capability layer provided by the resource control module 23 after receiving the relay positioning request, and the node service module is located.
  • the identification information of the module is sent to the node service module 33 that initiates the relay positioning request by using a relay positioning response;
  • the node storage module 31 is responsible for pulling the content from the content library to the local node storage module 31 according to the address information of the content library carried therein and the identification information of the content requested to be injected after receiving the content injection request sent by the control layer 2.
  • the node service module 33 is responsible for processing the content service request sent by the user, such as determining the capability layer.
  • the service of the content is provided for the user; if it is determined that the node storage module 31 of the capability layer 3 is not saved.
  • the content corresponding to the content identification information carried in the content service request sends a relay location request to the control layer 2 corresponding to the capability layer 3, where the relay location request carries the content identifier information; the node service module 33 is further used to After receiving the relay positioning response, requesting the content from the node service module where the requested content is located, and providing the content to the user
  • the node resource module 32 is responsible for calculating and storing the resource data of the node storage module 31 in the capability layer 3, wherein the resource data includes: the storage space occupancy of the node storage module 31 and the concurrent data provided by the node service module 33 for the content service. .
  • the embodiment of the present invention further provides a method for content management and service in a CDN, including: configuring all configuration data of a CDN system in a data management module, and synchronizing to a data control module of all control layers;
  • the content management module receives the content injection request sent by the content provider, and delivers the content injection request to the content control module in each control layer, and is controlled by the content control module according to an algorithm, and is sent to the capability layer corresponding to the control layer.
  • the node storage module sends a content injection request to notify the node storage module to pull down the content from the content provider's content library for storage.
  • the user initiates a request service to the node service module through the user terminal;
  • the node service module determines that the node resource module in the capability layer does not store the content corresponding to the request service, the node service module sends a relay location request to the relay positioning module in the control layer corresponding to the capability layer; After the relay positioning module finds the source node service module with the requested content, the address of the source node service module is notified to the node service module, and the node service module pulls down the code stream from the source node service module, and provides the user with the code stream. service.
  • the node resource module reports the node resource to the resource control module in the control layer corresponding to the capability layer; the resource control module collects the node resource reported by the node resource module in each capability layer corresponding to the control layer, and sends the node resource to the management layer. Do the monitoring analysis as the positioning basis of the relay positioning module.
  • TCP Transmission Control Protocol
  • File transfer protocol can be used between the capability layer and the content library. Protocol) for file transfer; which protocol is used between the user terminal and the capability layer, depending on the type of user terminal, for example, when the user terminal is an STB (Set Top Box), Use RTSP (Real Time Streaming Protocol) or 264.264;
  • STB Set Top Box
  • RTSP Real Time Streaming Protocol
  • 264.264 264.264
  • HTTP Hyper Text Transfer Protocol, super Text Transfer Protocol
  • HLS HTTP Live Streaming, HTTP Live Streaming.
  • the data synchronization process includes the following steps:
  • Step 201 When the configuration data of a certain control layer is changed, the data management module sends a data synchronous delivery message to the data control module i of the control layer.
  • Step 202 After receiving the message, the data control module i sends a data synchronization request message to the data management module.
  • Step 203 After receiving the data synchronization request message, the data management module returns a data synchronization response to the data control module i. After receiving the message, the data control module i performs data synchronization if it is determined that data synchronization is required.
  • the content injection process includes the following steps:
  • Step 301 The content provider sends a content injection request message to the content management module, where the content injection request message carries the FTP information of the content library where the content is located, such as an IP address, a port number, a user name, and a password.
  • Step 302 After receiving the message, the content management module replies to the content provider.
  • Step 303 The content management module sends a content injection request message to the content control module i.
  • Step 304 After receiving the message, the content control module i responds to the content management module.
  • Step 305 The content control module i sends a content injection request message to the node storage module j.
  • Step 306 After receiving the message, the node storage module j replies to the content control module i.
  • Step 307 The node storage module j pulls the content from the specified content library to the local storage module for storage.
  • Step 308 After storing the content, the node storage module j sends a content injection result message to the content control module i.
  • Step 309 After receiving the message, the content control module i responds to the node storage module j.
  • Step 310 The content control module i sends a content injection result report message to the content management module.
  • Step 311 After receiving the message, the content management module returns a response to the content control module.
  • Step 312 The content management module sends a content injection result report message to the content provider.
  • Step 313 After receiving the message, the content provider returns a response to the content management module.
  • the user-on-demand service process includes the following steps:
  • Step 401 The user terminal sends a content service request message to the node service module i, where the content service request message carries the identification information of the content of the point broadcast.
  • Step 402 If it is determined that the content is stored in the node storage module of the capability layer, the node is The service module i provides a code stream service to the user terminal.
  • Step 403 If it is determined that the content is not saved in the node storage module of the capability layer, the node service module i sends a relay positioning request message to the relay positioning module in the control layer corresponding to the capability layer, where the relay positioning is performed.
  • the request message carries the identification information of the content broadcast by the user terminal.
  • Step 404 After receiving the relay positioning request message, the relay positioning module returns a relay positioning response message to the node service module i, where the relay positioning response message carries the node service module j where the content of the user terminal is broadcasted. Address information.
  • Step 405 The node service module i sends a code stream relay request message to the node service module j according to the response message.
  • Step 406 The node service module j provides a relay code stream service to the node service module i.
  • Step 407 The node service module i provides a relay code stream service to the user terminal.
  • the node resource reporting process includes the following steps:
  • Step 501 The node resource module j periodically sends a resource report message to the resource control module i.
  • the management layer, the control layer, and the capability layer use TCP to interact, and different communication protocols can be used in the implementation.
  • TCP Between the capability layer and the content library, FTP is used for file transfer, and different transfer protocols can be used in the implementation.
  • FTP is used for file transfer
  • different transfer protocols can be used in the implementation.
  • Which protocol is used between the user terminal and the capability layer depends on the type of user terminal, and different media interaction protocols can be used in the implementation.
  • how to determine the user's service node can use different policy algorithms in the implementation.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

La présente invention concerne un réseau de livraison de contenu et un procédé de gestion de contenu dans le réseau de livraison de contenu. Le réseau de livraison de contenu comprend : une couche de gestion, plus d'une couche de commande et plus d'une couche de capacité. Chaque couche de commande correspond à plus d'une couche de capacité. La couche de gestion comprend un module de gestion de contenu, et ce dernier est agencé pour envoyer, à la couche de commande, une demande d'injection de contenu reçu envoyée par un fournisseur de contenu, le message de demande d'injection de contenu comporte des informations d'adresse d'une bibliothèque de contenus et des informations d'identification du contenu qui a fait l'objet d'une demande d'injection. La couche de commande comprend un module de commande de contenu, ce dernier est agencé pour envoyer la demande d'injection de contenu reçue à la couche de capacité. La couche de capacité comprend un module de stockage de nœud, et ce dernier est agencé pour : après la réception de la demande d'injection de contenu envoyée par la couche de commande, faire glisser le contenu de la bibliothèque de contenus au module de stockage de nœud pour un stockage selon les informations d'adresse de la bibliothèque de contenus et les informations d'identification du contenu faisant l'objet d'une demande d'injection, les informations d'adresse et les informations d'identification étant transportées dans la demande d'injection de contenu.
PCT/CN2013/082309 2013-02-01 2013-08-26 Réseau de livraison de contenu et procédé de gestion de contenu dans un réseau de livraison de contenu WO2014117508A1 (fr)

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CN103731506B (zh) * 2014-01-20 2017-08-11 中国联合网络通信集团有限公司 一种内容注入方法、第一业务服务节点和内容分发网络
CN106303747B (zh) * 2015-05-29 2020-06-02 中兴通讯股份有限公司 融合的互联网协议ip视频系统及实现方法
CN106851342A (zh) * 2017-03-06 2017-06-13 南京优速网络科技有限公司 一种内容编排分发网络的设计架构

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