CN112565811B - Decentralized edge node distribution system for Internet television - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/222—Secondary servers, e.g. proxy server, cable television Head-end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1034—Reaction to server failures by a load balancer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
- H04N21/23103—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion using load balancing strategies, e.g. by placing or distributing content on different disks, different memories or different servers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/632—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing using a connection between clients on a wide area network, e.g. setting up a peer-to-peer communication via Internet for retrieving video segments from the hard-disk of other client devices
Abstract
The invention discloses a decentralized edge node distribution system for an internet television, which comprises: the content distribution system is used for reliable Web and streaming media content distribution, and comprises a plurality of groups of content distribution edge nodes, wherein the content distribution edge nodes are connected with an external terminal and are used for providing service for a downloading request of the external terminal; the P2P technical system is used for content exchange to assist file transmission and improve the data transmission and downloading speed between content distribution edge nodes and between the content distribution edge nodes and an external terminal. The whole content service system is constructed by using the P2P technology to assist file transmission by taking the content distribution technology as a core and a base. Through a data transmission mechanism among the content distribution nodes, before a terminal requests to download a content file, the content is deployed to the edge content distribution node close to the terminal in advance, so that a user obtains the optimal download quality, and the burden of a backbone network is avoided being increased.
Description
Technical Field
The invention is applied to the technical field of software management, and particularly relates to an internet television decentralized edge node distribution system.
Background
People watch traditional television contents passively, cannot select and control the watched contents autonomously, only can watch the contents passively according to a time table, places are limited locally, the selectable contents are not too many, and good experience and requirements for meeting various contents cannot be obtained.
The existing content distribution technology utilizes a global load balancing technology to direct the access of a user to a streaming media server which works normally, and the streaming media server directly responds to the request of the user. If the server has no content to be accessed by the user, the corresponding content can be automatically fetched from the original server according to the configuration and provided for the user.
The prior art has the following disadvantages: the edge computing nodes are difficult to deploy by content distribution operators and video websites, and an operator does not pay attention to bandwidth saving, the video website cannot touch the edge computing nodes, and for the computing requirement with high real-time requirement, the problems of long network delay, network congestion, service quality reduction and the like can be caused by the existing technical scheme.
Disclosure of Invention
The invention aims to solve the technical problem of providing an internet television decentralized edge node distribution system aiming at the defects of the prior art.
In order to solve the above technical problem, the present invention provides an internet television decentralized edge node distribution system, which includes:
the content distribution system is used for reliable Web and streaming media content distribution, and comprises a plurality of groups of content distribution edge nodes, wherein the content distribution edge nodes are connected with an external terminal and are used for providing service for a downloading request of the external terminal;
the P2P technical system is used for content exchange to assist file transmission and improve the data transmission and downloading speed between content distribution edge nodes and between the content distribution edge nodes and an external terminal.
As a possible implementation manner, further, the content distribution system further includes: the system comprises a content management component, a content service component, a resource library and an external terminal.
As a possible implementation, further, the content service component includes:
the service function module is used for completing the basic functions of the content service system and providing service for the downloading behavior of the external terminal;
and the control function module is used for controlling the service function module to coordinate and complete the functions of the content service components.
As a possible implementation manner, further, the service function module includes:
a content distribution unit for obtaining a content file from a repository and transmitting and receiving the content file between content distribution edge nodes;
the content storage unit is used for storing, reading, deleting, redundantly backing up and restoring the content files transmitted to the content distribution edge nodes;
and the content service unit is used for transmitting the content file in cooperation with an external terminal, performing streaming processing on the content file, and caching the streaming content so as to support the streaming service operation of the client terminal on the program.
As a possible implementation, further, the control function module includes:
the content scheduling unit is used for acquiring the content management information from the content management component, formulating a content distribution strategy according to the content management information, informing the content distribution unit to execute a corresponding task, and reporting the distribution condition of the content in the system to the content management component;
a content service control unit for authenticating and authorizing the external terminal and performing related control on the download request of the external terminal; carrying out load balancing selection on the stream service accessed by the external terminal, and switching the content distribution edge nodes when a fault occurs; and when the content is not hit, downloading the content file from other content distribution edge nodes in real time and providing service for the external terminal.
As a possible implementation manner, further, the service function module and the control function module are integrated on the content distribution edge node, and when the service function module and the control function module are integrated on the content distribution edge node, the control function module is used for taking charge of load balancing inside the content distribution edge node, and when an external terminal downloads a content file, the control function module selects an optimal service function module to provide a service for downloading of a user according to loads of the service function modules inside the node.
As a possible implementation, further, the content management component includes:
the content approval module is used for auditing the content information, and issuing and video collecting processing can be carried out on the content information after the content information is approved, so that the correctness and the legality of the film information watched by a user are ensured;
the content distribution deployment module is used for deploying the specified content file to the CDN content storage node of the specified area according to the service requirement;
and the content playing limiting module is used for controlling the playing permission of the content according to the terminal, the region, the content and the service provider.
By adopting the technical scheme, the invention has the following beneficial effects:
the invention takes the content distribution technology as the core and the foundation, uses the P2P technology to assist the file transmission, and constructs the whole content service system according to the idea. Through a data transmission mechanism among the content distribution nodes, before a terminal requests to download a content file, the content is deployed on the edge content distribution node close to the terminal in advance, so that when the terminal requests to download the content file, the content file is directly downloaded from the edge content distribution node, and a congested backbone network is avoided, so that a user obtains the optimal download quality, and the burden of the backbone network is avoided.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a functional block diagram of a content distribution system according to the present invention;
fig. 2 is a diagram of a content distribution system network architecture according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides an internet tv decentralized edge node distribution system, which includes:
the content distribution system is used for reliable Web and streaming media content distribution, and comprises a plurality of groups of content distribution edge nodes, wherein the content distribution edge nodes are connected with an external terminal and are used for providing service for a downloading request of the external terminal;
the P2P technical system is used for content exchange to assist file transmission and improve the downloading speed of data transmission between content distribution edge nodes and between the content distribution edge nodes and external terminals.
The entire content delivery network is constructed using content distribution + P2P fusion. In the system, through a data transmission mechanism among the content distribution nodes, before a terminal requests to download a content file, the content is deployed on the edge content distribution node close to the terminal in advance, so that when the terminal requests to download the content file, the content file is directly downloaded from the edge content distribution node, and a congested backbone network is avoided, so that a user obtains the optimal download quality, and the burden of the backbone network is avoided.
The streaming media service of the content distribution system is a high-performance media service program which is completely finished by C language, and the service program can furthest mine the potential of hardware and a network and provide smooth video playing service for various types of terminal users. The product is mature and stable, and can be applied to OTT TV, IPTV, VOD and various live broadcast application scenes. The content distribution system service program can send the H.264 video data and the AAC/MP3 audio data to any terminal type which an operator wants to serve in an optimal packaging mode, and can show the optimal playing experience on each terminal, such as the playing experience of live broadcasting, on-demand broadcasting, time shifting, instant review and the like.
The streaming media server used by the content distribution system has the following characteristics: 1. broadcast capability for various terminals: the system can be used for barrier-free transmission for broadband internet, broadband mobile network and two-way television network, and can provide smooth broadcasting service for set-top box terminals, tablet computers and iOS/Android mobile intelligent terminals. 2. Designing a broadcasting function: the system has rich broadcasting experience, supports live television broadcast, live broadcast, time-shift television broadcast, instant review and video on demand, and is suitable for OTT TV, IPTV, live broadcast, VOD and other applications. 3. Extremely high playout service performance: the broadcasting kernel is developed and realized by C language, the performance is far superior to Wowza realized by Java language, the evaluation performance is far superior to Adobe Media Server, more than 1000+ concurrent streams can be broadcasted on a common 4-core single CPU Server, and the capability of equipment hardware is fully exploited. 4. HLS slicing and packaging: and slicing and packaging the multimedia files and the live streams in various formats to generate an m3u8 index file, and outputting an HLS play stream. Time-shift playing and quick review can be realized while the HLS live stream is output without additional development. 5. Access authentication and authorization; and a user access authentication and authorization interface is provided, and the authorization of content playing can be provided only for users meeting the authentication requirement. 6. Real-time archiving: and (3) archiving the live stream in real time, finishing the live stream archiving after the live stream archiving is finished, and supporting MP4, FLV and Apple HLS slice files in an archiving format. 7. Service interface: and providing interfaces for online access quantity inquiry, system load inquiry, broadcast stream inquiry, archive file inquiry and the like.
As a possible implementation manner, further, the content distribution system further includes: the system comprises a content management component, a content service component, a resource library and an external terminal.
As a possible implementation, further, the content service component includes:
the service function module is used for completing the basic functions of the content service system and providing services for the downloading behavior of the external terminal;
and the control function module is used for controlling the service function module to coordinate and complete the functions of the content service components.
As a possible implementation manner, further, the service function module includes:
a content distribution unit for obtaining a content file from a repository and transmitting and receiving the content file between content distribution edge nodes;
the content storage unit is used for storing, reading, deleting, redundantly backing up and restoring the content files transmitted to the content distribution edge nodes;
and the content service unit is used for matching with an external terminal to transmit the content file, performing streaming processing (currently supporting HLS, HTTP and RTMP streams) on the content file, and caching the streaming content so as to support the streaming service operation of the client terminal on the program.
As a possible implementation, further, the control function module includes:
the content scheduling unit is used for acquiring the content management information from the content management component, formulating a content distribution strategy according to the content management information, informing the content distribution unit to execute a corresponding task, and reporting the distribution condition of the content in the system to the content management component;
a content service control unit for authenticating and authenticating the external terminal and performing related control on the download request of the external terminal; carrying out load balancing selection on the stream service accessed by the external terminal, and switching the content distribution edge nodes when a fault occurs; and when the content is not hit, downloading the content file from other content distribution edge nodes in real time and providing service for the external terminal.
As a possible implementation manner, as shown in fig. 2, the service function module and the control function module are integrated on the content distribution edge node, and when the service function module and the control function module are integrated on the content distribution edge node, the control function module is used for taking charge of load balancing inside the content distribution edge node, and when the external terminal downloads a content file, the control function module selects an optimal service function module to provide a service for downloading of a user according to loads of the service function modules inside the node. Fig. 2 is a network architecture diagram of a content distribution system, and in order to support the distributed feature of the content distribution network, fig. 2 adds a distributed content distribution edge node and a content distribution global server on the basis of a "functional structure diagram of the content distribution system".
As a possible implementation, further, the content management component includes:
the content approval module is used for auditing the content information, and issuing and video collecting processing can be carried out on the content information after the content information is approved, so that the correctness and the legality of the film information watched by a user are ensured; the content service platform checks and confirms the approved content information integrated broadcast control platform, and the approved system can release and collect the video of the content information, thereby ensuring the correctness and the legality of the film information watched by the user.
The content distribution deployment module is used for deploying the specified content file to the CDN content storage node of the specified area according to the service requirement; the system can deploy the specified content file to the CDN content storage node in the specified area according to the service requirement, and the terminal equipment can acquire the content file from the nearest CDN storage node, so that the downloading speed of the terminal equipment for acquiring the content file is increased, and the access pressure of other CDN storage nodes is relieved. The deployment operation of the content files is carried out in a P2P mode, and data sharing can be carried out among CDN storage nodes; the system supports two modes of central node distribution and deployment and edge node distribution and deployment, and greatly facilitates the operability of content file deployment. 1. The content file can be distributed and deployed from the central content management system, and the content file is controlled to be distributed and deployed to CDN content storage nodes in a specified area; 2. the system adopts a transmission mode of P2P, and the system supports the distribution and deployment of content files from any one edge CDN storage node to other CDN storage nodes, thereby facilitating the uploading of the content files from different places by service providers. 3. The distribution and deployment mode of the system to the content files comprises the following steps: manual immediate distribution, designated area distribution, intelligent distribution, hierarchical distribution, and timed distribution.
And the content playing limiting module is used for controlling the playing permission of the content according to the terminal, the region, the content and the service provider.
The foregoing is directed to embodiments of the present invention, and equivalents, modifications, substitutions and variations such as will occur to those skilled in the art, which fall within the scope and spirit of the appended claims.
Claims (3)
1. An internet television decentralized edge node distribution system is characterized in that: it includes:
the content distribution system is used for reliable Web and streaming media content distribution, and comprises a plurality of groups of content distribution edge nodes, wherein the content distribution edge nodes are connected with an external terminal and are used for providing service for a downloading request of the external terminal; the system is also used for slicing and packaging multimedia files and live streams in various formats, generating an m3u8 index file, outputting an HLS broadcast stream, and realizing time-shift play and quick review while outputting the HLS live stream;
the P2P technical system is used for assisting file transmission in content exchange and improving the data transmission downloading speed between content distribution edge nodes and between the content distribution edge nodes and an external terminal;
wherein the content distribution system further comprises: the system comprises a content management component, a content service component, a resource library and an external terminal;
the content service component comprises:
the service function module is used for providing service for the downloading behavior of the external terminal;
the control function module is used for controlling the service function module to coordinate and complete the functions of the content service components;
the service function module includes:
a content distribution unit for obtaining content files from the repository and transmitting and receiving the content files among the content distribution edge nodes;
the content storage unit is used for storing, reading, deleting, redundantly backing up and restoring the content files transmitted to the content distribution edge nodes;
the content service unit is used for transmitting the content file in cooperation with an external terminal, performing fluidization processing on the content file, and caching the fluidization content so as to support the streaming service operation of the client terminal on the program;
the control function module includes:
the content scheduling unit is used for acquiring the content management information from the content management component, formulating a content distribution strategy according to the content management information, informing the content distribution unit to execute a corresponding task, and reporting the distribution condition of the content in the system to the content management component;
a content service control unit for authenticating and authenticating the external terminal and performing related control on the download request of the external terminal; carrying out load balancing selection on the stream service accessed by the external terminal, and switching the content distribution edge nodes when a fault occurs; and when the content is not hit, downloading the content file from other content distribution edge nodes in real time and providing service for the external terminal.
2. The internet television decentralized edge node distribution system according to claim 1, wherein: the service function module and the control function module are integrated on the content distribution edge node, when the service function module and the control function module are integrated on the content distribution edge node, the control function module is used for being responsible for load balancing inside the content distribution edge node, and when an external terminal downloads a content file, the control function module can select an optimal service function module to provide service for downloading of a user according to loads of all service function modules inside the node.
3. The internet television decentralized edge node distribution system according to claim 1, characterized in that: the content management component comprises:
the content approval module is used for auditing the content information, and issuing and video collecting processing can be carried out on the content information after the content information is approved, so that the correctness and the legality of the film information watched by a user are ensured;
the content distribution deployment module is used for deploying the specified content file to the CDN content storage node of the specified area according to the service requirement;
and the content playing limiting module is used for controlling the playing permission of the content according to the terminal, the region, the content and the service provider.
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| CN101378494A (en) * | 2008-10-07 | 2009-03-04 | 中兴通讯股份有限公司 | System and method for implementing internet television medium interaction |
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| JP2013516854A (en) * | 2010-01-04 | 2013-05-13 | アルカテル−ルーセント | Edge content distribution device and content distribution network for IPTV system |
| WO2012153173A2 (en) * | 2011-01-29 | 2012-11-15 | Redthorne Media, Llc | Feedback oriented private overlay network for content distribution |
| US9432452B2 (en) * | 2012-09-10 | 2016-08-30 | Joosy, Inc. | Systems and methods for dynamic networked peer-to-peer content distribution |
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