WO2014059883A1 - 一种实现交互式网络电视业务的融合设备、系统和方法 - Google Patents

一种实现交互式网络电视业务的融合设备、系统和方法 Download PDF

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Publication number
WO2014059883A1
WO2014059883A1 PCT/CN2013/084798 CN2013084798W WO2014059883A1 WO 2014059883 A1 WO2014059883 A1 WO 2014059883A1 CN 2013084798 W CN2013084798 W CN 2013084798W WO 2014059883 A1 WO2014059883 A1 WO 2014059883A1
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Prior art keywords
network
service
cdn
component
policy template
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PCT/CN2013/084798
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English (en)
French (fr)
Inventor
黄孙亮
陈建业
范成法
李宏飚
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中兴通讯股份有限公司
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Priority to EP13847213.9A priority Critical patent/EP2911403B1/en
Priority to US14/436,384 priority patent/US9451302B2/en
Publication of WO2014059883A1 publication Critical patent/WO2014059883A1/zh

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Classifications

    • 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
    • H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
    • H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • 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
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H04N21/2181—Source of audio or video content, e.g. local disk arrays comprising remotely distributed storage units, e.g. when movies are replicated over a plurality of video servers
    • H—ELECTRICITY
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    • H04N21/2183—Cache memory
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    • 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
    • H04N21/23116—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving data replication, e.g. over plural servers
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    • H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
    • H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
    • H04N21/2396—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests characterized by admission policies
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    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
    • H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
    • H04N21/26216—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the channel capacity, e.g. network bandwidth
    • H—ELECTRICITY
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    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
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    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
    • 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 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • 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
    • H04N21/631—Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols
    • 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
    • H04N21/643—Communication protocols
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • 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
    • H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
    • H04N21/64707—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless for transferring content from a first network to a second network, e.g. between IP and wireless
    • H—ELECTRICITY
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    • H04N21/65—Transmission of management data between client and server
    • H04N21/658—Transmission by the client directed to the server
    • H04N21/6581—Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application

Definitions

  • Fusion device system and method for realizing interactive network television service
  • the present invention relates to the field of communications technologies, and in particular, to a fusion device, system, and method for implementing an interactive network television (IPTV) service.
  • IPTV interactive network television
  • IPTV is the main means and platform for telecom operators to carry out content operations and services. Through the IPTV platform, telecom operators not only provide video services, but also develop a large number of value-added application services.
  • IPTV is an important means for telecom operators to increase the value of Average Revenue Per User (ARPU) and increase operating revenue.
  • CDN and network are still relatively independent. CDN capability and network bandwidth may become bottlenecks and affect the user experience. As a result, telecom operators can only rely on simple network expansion to ensure that the network is not congested. At the same time, CDN is built on a large scale to ensure the capacity of the CDN to ensure the service quality of the self-operated IPTV service. Caused a lot of investment waste. At the time of construction, CDN resources and network resources are planned and constructed according to the experience value. In areas where users are particularly concentrated, there may still be business congestion and services cannot be guaranteed.
  • a fusion device, system and method for implementing an IPTV service that overcomes the above problems or at least partially solves the above problems is proposed.
  • an embodiment of the present invention provides a convergence device for implementing an IPTV service, where the convergence device integrates a content distribution network CDN component and a network component, and the CDN component and the network component are disposed.
  • the convergence device integrates a content distribution network CDN component and a network component, and the CDN component and the network component are disposed.
  • the CDN component includes:
  • a first query unit configured to be a media service request initiated by the receiver set-top box STB, and searching for a service policy template matching the service type carried by the media service request in the pre-configured service policy template database;
  • a content service unit configured to initiate a network support request to the network component, and after receiving the success response message fed back by the network component, using the queried service policy template to provide a media stream service for the STB;
  • the network component includes:
  • a second query unit configured to: after receiving the network support request, search for a network policy template that matches the service policy in a pre-configured network policy template database;
  • the request response unit is configured to execute the queried network policy template, and when the execution is successful, feed back a success response message to the CDN component, and use the network policy template to provide network resource support for the CDN component.
  • the first querying unit is further configured to: when receiving the media service request, detecting whether the current CDN capability can accept the media service request, and if yes, searching The business policy template database.
  • the first query unit is further configured to not accept the media when detecting the current CDN capability When the service request is performed, the failure prompt information is returned, and the reason for the failure and the media information of the request are recorded.
  • the request response unit is further configured to return a failure response message if the execution is unsuccessful when executing the queried network policy template, and Record the reason for the failure and the network policy template that was executed.
  • the CDN component further includes: a content acceleration revocation unit configured to, when detecting that the STB disconnects the media service connection, revoke the service policy template, release the resource, and send a policy revocation request to the network component;
  • the network component further includes: a network acceleration revocation unit configured to, after receiving the policy revocation request, revoke the network policy template, and restore the original network policy of the user.
  • a network acceleration revocation unit configured to, after receiving the policy revocation request, revoke the network policy template, and restore the original network policy of the user.
  • the content service unit is further configured to send a service start notification message to the IPTV service system when the media stream service is provided to the STB by using the service policy template;
  • the service end notification message is sent to the IPTV service system.
  • the CDN component further includes: a first information recording unit configured to: after the content acceleration and revocation unit cancels the service policy template, record media content, service policy template, and media content traffic information of the CDN component for the current service; and / or,
  • the network component further includes: a second information recording unit configured to: after the network acceleration and revocation unit cancels the network policy template, record a network policy template, bandwidth used, and usage duration information used by the network component in the current service .
  • the content service unit is further configured to: when using the service policy template to provide a media stream service for the STB, detecting whether the requested media content is cached locally, if Yes, directly distributed to the STB; otherwise, according to the network layered deployment, after the upper content distribution node requests the acquisition, it is distributed to the STB;
  • the superior content distribution node is a separate CDN node or a CDN component in the converged device.
  • the CDN component and the network component are loosely coupled.
  • an embodiment of the present invention further provides a convergence system for implementing an IPTV service, including: an IPTV service system, a CDN center management system, a network device management system, and a convergence device;
  • the IPTV service system is configured to receive a user-on-demand request sent by the STB, obtain user address information carried in the on-demand request, and acquire, in a pre-configured mapping relation database, a CDN component of the fusion device that matches the user address information. External service address information, and the obtained address information is sent to the STB through the electronic program menu EPG, that is, the fusion device that informs the STB to serve;
  • the CDN central management system and the network device management system are respectively configured to maintain and manage CDN components and network components of the converged device.
  • the mapping relationship database configuration manner includes:
  • the network component of the converged device sends an address pool of the IPTV user maintained by itself to the CDN component;
  • the correspondence between the IPTV user address pool and the CDN component is generated according to the CDN service address of the CDN component, and the correspondence is synchronized to the IPTV service system by using the CDN central management system. ;
  • the IPTV service system generates a mapping relationship database by using the correspondence between the IPTV user address pool and the CDN component of each fusion device synchronized by the CDN central management system.
  • the configuration of the service policy template database and the network policy template database queried by the network component in the fusion device includes:
  • the IPTV service system customizes a service policy template corresponding to each service type according to each service type, and sends each service policy template to the CDN central management system;
  • the CDN central management system uses the received service policy templates to generate a service policy template on the CDN system side, and sends the generated service policy templates to the CDN component of the fusion device and the network device management.
  • the network device management system After receiving the service policy template, the network device management system generates a network policy template that supports each service policy template, and sends each of the network policy templates to the network component of the fusion device;
  • the CDN component After receiving the service policy template, the CDN component generates a service policy template database, and after receiving the network policy template, the network component generates a network policy template.
  • the IPTV service system is further configured to record charging information based on a service start and end notification message sent by the fused device; the charging information includes: media content , request times and service duration information.
  • the embodiment of the present invention further provides a method for implementing an IPTV service, including:
  • the IPTV service system receives the user-on-demand request sent by the STB, obtains the user address information carried in the request, and obtains the fusion device that matches the user address information in the pre-configured mapping relationship database, and obtains the merged device information.
  • the CDN component of the converged device searches for a service carried in the media service request in the pre-configured service policy template database Type a matching service policy template, and initiate a network support request to the network component of the converged device;
  • the network component of the converged device After receiving the network support request, the network component of the converged device searches for a network policy template that matches the service policy in the pre-configured network policy template database, and executes the queried network policy template, and when the execution is successful , feeding back the successful response to the CDN component And providing the network resource support for the CDN component by using the network policy template; after receiving the success response message fed back by the network component, the CDN component of the fusion device uses the queried service policy template to STB provides media streaming services.
  • the fusion device, system and method according to the embodiment of the present invention by combining the CDN content distribution function and the network service function, the network connection and the application layer link of the same user are all placed on the network device to better cooperate, It is easier to achieve the quality of service guarantee for IPTV services. It also enables the allocation of network bandwidth and the deployment of network policies to be more flexible. At the same time, it is better to grasp the service types, CDN resources and network resource usage statistics of IPTV users, to provide a solid basis for capacity expansion, to avoid the mismatch between CDN and network separation, to meet the demand, and to waste investment.
  • FIG. 1 is a structural block diagram of a fusion device for implementing an IPTV service according to an embodiment of the present invention
  • FIG. 2 is a structural block diagram of a fusion system for implementing an IPTV service according to an embodiment of the present invention
  • FIG. 4 is a network diagram of a system for a converged device according to an embodiment of the present invention
  • FIG. 5 is a block diagram showing an internal structure of a fusion device according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a deployment of a scheduling and positioning policy of an IPTV user according to an embodiment of the present invention
  • FIG. 7 is a flowchart of a preset processing process of an IPTV user service policy and a network policy according to an embodiment of the present invention
  • FIG. 8 is a specific flowchart of implementing a IPTV service by a converged device according to an embodiment of the present invention. detailed description
  • Embodiments of the present invention provide a fusion device, system, and method for implementing an IPTV service.
  • the fusion device, the fusion system and the fusion method of the present invention are described in detail below through several specific embodiments.
  • An embodiment of the present invention provides a convergence device for implementing an IPTV service, where the convergence device combines a CDN and a network device to implement a novel device, and the IPTV service bearer implemented on the device It can effectively implement the IPTV service usage status and the efficient cooperation of CDN resources and network resources to ensure the IPTV service experience. At the same time, it can combine the CDN resources and network resources to make policy adjustments and user access adjustments, optimize resources. The utilization and network construction and planning have greatly improved the service quality of IPTV.
  • the fusion device integrates a CDN component (corresponding to a CDN node in a CDN network) 110 and a network component 120, and the CDN component 110 and the network component 120 are internally provided. Communication interface; Preferably, the CDN component 110 is loosely coupled to the network component 120.
  • the CDN component 110 includes:
  • the first query unit 111 is configured to be a media service request initiated by the receiver set-top box STB, and searches for a service policy template that matches the service type carried by the media service request in the pre-configured service policy template database;
  • the content service unit 112 is configured to initiate a network support request to the network component 120, and after receiving the success response message fed back by the network component 120, use the queried service policy template to provide the media stream service to the STB;
  • Network component 120 comprising:
  • the second query unit 121 is configured to: after receiving the network support request, search for a network policy template that matches the service policy in a pre-configured network policy template database;
  • the request response unit 122 is configured to execute the queried network policy template, and when the execution is successful, feed back a success response message to the CDN component 110, and provide network resource support for the CDN component 110 by using the network policy template.
  • the above is the main structure of the converged device and the implementation manner of the IPTV service bearer.
  • the following provides some preferred or specific implementations of the converged device in the IPTV service bearer process, which involves the following contents:
  • the CDN component 110 further includes: a content acceleration and marketing unit 113, configured to: when detecting that the STB disconnects the media service connection, revoke the service policy template, release resources, and send the network component 120 sending a policy revocation request;
  • a content acceleration and marketing unit 113 configured to: when detecting that the STB disconnects the media service connection, revoke the service policy template, release resources, and send the network component 120 sending a policy revocation request;
  • the network component 120 further includes: a network acceleration revocation unit 123 configured to revoke the network policy template after receiving the policy revocation request.
  • the content acceleration revocation unit 113 and the network acceleration revocation unit 123 automatically restore the service policy and the network policy to the policy state before the STB request after the business policy template and the network policy template are revoked.
  • the content service unit 112 of the CDN component 110 is further configured to: when the media stream service is provided to the STB by using the service policy template, send a service start notification message to the IPTV service system; and accelerate the content
  • the revocation unit cancels the service policy template it sends a service end notification message to the IPTV service system. That is, in the embodiment of the present invention, the convergence device notifies the IPTV service system when the service starts and the service ends, so that the IPTV service system is accurate. Billing for STB users.
  • the converged device may also record related service information in the service process, thereby expanding the charging information of the IPTV service system, providing a more detailed billing list for the user, and Provide a basis for business use.
  • the fusion device of the embodiment of the present invention in the fusion device of the embodiment of the present invention:
  • the CDN component 110 further includes: a first information recording unit 114 configured to: after the content acceleration and revocation unit cancels the service policy template, record media content, service policy template, and media content traffic of the CDN component for the current service Information; and / or,
  • the network component 120 further includes: a second information recording unit 124 configured to: after the network acceleration and revocation unit cancels the network policy template, record a network policy template used by the network component, bandwidth used, and usage Duration information.
  • a second information recording unit 124 configured to: after the network acceleration and revocation unit cancels the network policy template, record a network policy template used by the network component, bandwidth used, and usage Duration information.
  • the fusion device in the embodiment of the present invention further has the following features:
  • the first querying unit 111 is further configured to: when receiving the media service request, detect whether the current CDN capability can accept the media service request, and if yes, look up the service policy template database.
  • the CDN capability refers to the capability information of the current CDN component and the capability of the service type that can affect the normal access service of the CDN component.
  • the first querying unit 111 is further configured to: when detecting that the current CDN capability cannot accept the media service request, return a failure prompt message, and record the reason for the failure and the requested media information;
  • the request response unit 122 is further configured to, when executing the queried network policy template, if the execution is unsuccessful, return a failure response message, and record the reason for the failure and the executed network policy template.
  • the first query unit 111 and the request response unit 122 can record the non-serviceable condition of the CDN component and the network component in real time, and the specific service failure reason and the parameter of the request service, so as to provide a basis for subsequent expansion.
  • the content service unit 112 is further configured to detect whether the requested media content is cached locally when the media stream service is provided to the STB by using the service policy template, and if so, directly to the The STB is distributed; otherwise, according to the network layered deployment, the upper-level content distribution node requests the acquisition, and then distributes to the STB; wherein the superior content distribution node is an independent CDN node or a CDN component in the fusion device.
  • the CDN component of the fusion device is equivalent to the external independent CDN node, and can interact, cluster, and coordinate with the external independent CDN node at the same level. It can also form a multi-level structure with external independent CDN nodes to meet the requirements of networking and service services in different scenarios.
  • the convergence device in the embodiment of the present invention integrates a CDN component and a network component, so that the network connection and the application layer link of the user are all on the network device, and the cooperation between the application and the network is more easily realized, and the IPTV is better guaranteed.
  • the quality of service of the business is better guaranteed.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • an embodiment of the present invention provides a convergence system for implementing an IPTV service, including: an IPTV service system 210, a CDN center management system 230, a network device management system 240, and a plurality of fusion devices as described in Embodiment 1.
  • an IPTV service system 210 including: an IPTV service system 210, a CDN center management system 230, a network device management system 240, and a plurality of fusion devices as described in Embodiment 1.
  • the bearer mode of the IPTV service implemented by the fused device is only briefly stated.
  • the specific implementation process refer to the first embodiment;
  • the IPTV service system 210 is configured to receive a user-on-demand request sent by the STB, obtain the user address information carried in the on-demand request, acquire a fusion device that matches the user address information in a pre-configured mapping relationship database, and The acquired fusion device information is sent to the STB through an electronic program menu EPG;
  • the converging device 220 includes a CDN component and a network component.
  • the CDN component is configured to receive a media service request initiated by the STB, and search for a service type carried in the media service request in a pre-configured service policy template database. Matching the service policy template, and initiating a network support request to the network component, and after receiving the success response message fed back by the network component, using the queried service policy template to provide the media stream service to the STB; With After receiving the network support request, the network policy template matching the service policy is searched in the pre-configured network policy template database, and the queried network policy template is executed, and when the execution is successful, the CDN is sent to the CDN. The component feeds back a success response message and provides network resource support for the CDN component using the network policy template.
  • the CDN central management system 230 and the network device management system 240 are respectively configured to maintain and manage CDN components and network components of the fusion device.
  • the system according to the embodiment of the present invention includes a separate CDN node, which comprises a separate CDN node, and the CDN node constitutes a superior/central node of the fusion device to provide content support for the converged device.
  • the foregoing is the main structure of the converged system and the implementation manner of implementing the IPTV service bearer.
  • the following provides some preferred or specific implementation manners of the converged system in the IPTV service bearer process, which involves the following contents:
  • the mapping relationship database configuration manner includes: a component
  • the CDN service address is generated, and the correspondence between the IPTV user address pool and the CDN component is generated, and the correspondence is synchronized to the IPTV service system 210 through the CDN central management system 230;
  • the IPTV service system 210 generates a mapping relation database by using the correspondence between the IPTV user address pool of each converged device synchronized by the CDN center management system 230 and the CDN component.
  • the configuration of the service policy template database and the network policy template database includes:
  • the IPTV service system 210 customizes the service policy template corresponding to each service type according to each service type, and sends each service policy template to the CDN center management system 230;
  • the CDN central management system 230 uses the received service policy templates to generate a service policy template on the CDN system side, and sends the generated service policy templates to the CDN component and the network device management system 240 of the fusion device 220 respectively;
  • the component After receiving the business policy template, the component generates a business policy template database.
  • the network device management system After receiving the service policy template, the network device management system generates a network policy template that supports each service policy template, and sends each of the network policy templates to the network component of the convergence device; wherein the network component receives the service policy After the template, a network policy template database is generated.
  • the IPTV service system 210 is further configured to record charging information based on a service start and end notification message sent by the converged device 220; the charging information includes: media content, request Number of times and service duration information.
  • the CDN central management system 230 adopts a centralized deployment manner, and is uniformly deployed with a domain name resolution system (DNS) server, a resource scheduling and a load balancing system (GSLB), and implements a CDN for the local area.
  • DNS domain name resolution system
  • GSLB load balancing system
  • the CDN component in the converged device and the management and maintenance of the external CDN node, service adaptation, resource scheduling, etc.; can be deployed as an independent system, or can be integrated with the network device management 240 system, as an integral part of the network management system, Unified deployment with the network management system.
  • the system in the embodiment of the present invention utilizes a converged device that incorporates a CDN component and a network component, so that the network connection and the application layer link of the user are all on the network device, and the cooperation between the application and the network is more easily realized. It is good to guarantee the service quality of the IPTV service.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • an embodiment of the present invention provides a method for implementing an IPTV service, including: Step S301: An IPTV service system receives a user-on-demand request sent by an STB, and obtains user address information carried in the request for the on-demand;
  • Step S302 the IPTV service system acquires and describes the IPTV service system in a pre-configured mapping relation database.
  • the fused device with the user address information matching, and the obtained fused device information is sent to the STB through the EPG;
  • Step S303 the STB sends a media service request to the CDN component of the converged device.
  • Step S305 After receiving the network support request, the network component of the converged device searches for a network policy template that matches the service policy in the pre-configured network policy template database.
  • Step S306 the fused device performs the queried network policy template, and when the execution is successful, feeds back a success response message to the CDN component, and provides network resource support for the CDN component by using the network policy template.
  • Step S307 After receiving the success response message fed back by the network component, the CDN component of the converged device provides the media stream service to the STB by using the queried service policy template.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the embodiment of the present invention is a centralized description of the IPTV service bearer implemented by the convergence device according to the first embodiment, the fusion system described in the second embodiment, and the fusion method described in the third embodiment, and specifically relates to the following content:
  • FIG. 4 it is a network diagram of a system of a fusion device in an embodiment of the present invention. From the system, the fusion device can be deployed in a distributed manner, but a central management system is required to implement unified management and scheduling, and implement unified content management, service monitoring, network management, DNS resolution, resource scheduling, and load balancing.
  • Converged devices which combine CDN functions and network functions, use CDN components as content distribution nodes to provide users with content distribution services; and use network components to provide users with network access and bearer services.
  • the CDN component and the CDN central management system establish a management channel and a service channel, and adopt a management channel to implement daily maintenance management of the network, monitoring of the device, etc.; The distribution of current content, the interaction of business information, and so on.
  • CDN components can be integrated with core routers, service routers (BRAS/SR), switches and other devices on the network.
  • BRAS/SR is a service control point of the IPTV user and has the network state information of the user
  • the CDN device and the BRAS/SR device are preferably fused in the present invention, thereby realizing the cooperation between the CDN user state and the network user state, and the user state.
  • the synergy can achieve the dual protection of the user's application content and network quality, thereby improving the user experience.
  • the CDN component of the converged device can be viewed as a CDN node. It can be combined with an external CDN device to form a cluster at the same level. It can also form a multi-level CDN network to meet different scenarios. Deployment and business needs.
  • the CDN central management system adopts centralized deployment and is deployed in a unified manner with the DNS server, resource scheduling and load balancing system (GSLB) to implement management and maintenance of CDN components and external CDN nodes in the CDN and network convergence equipment in the region. It can be deployed as an independent system or integrated with the network management system of the converged device. As part of the network management system, it can be deployed in a unified manner with the network management system.
  • GSLB resource scheduling and load balancing system
  • the fusion device combines the content distribution node and the network device of the CDN, and adopts a loosely coupled manner for fusion.
  • the CDN component adopts an independent CDN service processing board type, and the network component also adopts an independent network service processing board. Type; thus greatly reducing the complexity of the fusion, but also improving the scalability and flexibility of the system.
  • Network components or CDN components can be expanded to meet specific business needs.
  • the CDN component of the converged device provides the user with an application content distribution service, and maintains a corresponding content state machine for the user while providing the service, and records the state of the user content service, thereby facilitating the user-based refinement operation.
  • CDN components can implement content acceleration and assurance policies for users.
  • the network component of the converged device provides network access and bearer services for the user, and maintains a corresponding network state machine for the user while providing the service, and records the network service status of the user, which is convenient for realizing Now based on the user's refined operation.
  • Network components can implement network acceleration and assurance policies for users.
  • an internal signaling interaction interface between the CDN component and the network component is added; the interaction information includes: the network component reports the user address pool to the CDN component, and the CDN component is directed to the network.
  • the component applies for user network acceleration and receives execution feedback information, user status query and feedback, etc.; state information coordination and service policy adjustment, etc., can better protect the user experience.
  • the deployment process of the scheduling and positioning policy of the IPTV user in the embodiment of the present invention is shown.
  • the network layer connection and the application layer link of the IPTV user are all located on the same converged device, and the network component of the converged device provides the network service for the user, and the CDN component of the converged device provides the content for the user.
  • the service is distributed so that the CDN component and the network component can be linked through the internal interface to better protect the service experience of the IPTV user and adjust it more flexibly. Therefore, certain strategies are needed to schedule and locate users.
  • the method for implementing the scheduling and positioning of the IPTV service system for the fused service device specifically includes:
  • Step 101 The network component of the fused device maintains an address pool of the IPTV user under the device; the network component notifies the IPTV user address pool information through an internal interface with the CDN component;
  • Step 102 The CDN component successfully receives the IPTV user address pool information, and sends a reception success message to the network component. If the CDN component fails to receive, the network component sends a reception failure message to the network component, and the network component resends; the CDN component successfully receives the device. After the IPTV user address pool information is combined with the external service address information of the CDN node that provides the service, the correspondence record between the IPTV user address pool and the CDN service node of the fusion device is generated;
  • Step 103 The CDN component reports the correspondence relationship record information of the IPTV user address pool and the CDN service node of the fusion device to the CDN central management system;
  • Step 104 After successfully receiving the CDN central management system, send a reception success message to the CDN component of the converged device; if the reception fails, send a reception failure message, and the CDN component of the converged device will resend;
  • Step 105 The C DN central management system uniformly manages and maintains a correspondence database between the IPTV user address pool and the CDN service node of each converged device in the network; and synchronizes with the IPTV service system;
  • Step 106 The information synchronization is successful, and the IPTV service system sends a synchronization success message to the CDN central management system; if the synchronization fails, resynchronization is required;
  • the information synchronization between the CDN central management system and the IPTV service system can be synchronized in batches and in real time; batch synchronization is generally performed in the case of system initialization, system switching, etc.; real-time synchronization is generally performed on a converged device.
  • the IPTV user address pool is changed, and the real-time update synchronization part records information when the CDN service node is changed.
  • the IPTV system After the IPTV system completes the information synchronization, it has the ability to schedule and locate the user according to the address of the IPTV user.
  • the service of the IPTV user When the service of the IPTV user is authenticated, the user can be scheduled and located according to the IP address of the user, and the user is located.
  • a CDN monthly service node ie, a CDN component
  • FIG. 7 it is a preset processing procedure of an IPTV user service policy and a network policy in the embodiment of the present invention.
  • different services can be provided for users, such as: ultra high definition, high definition, standard definition; different services have different requirements for content distribution and network bandwidth and quality; thus, different business strategies and networks are required.
  • the policy is guaranteed, and the corresponding service policy and network policy need to be deployed.
  • the system uses the CDN component to judge the service access of the user and apply the corresponding policy. Therefore, the corresponding service policy and network policy need to be pre-deployed.
  • the IPTV service system formulates a corresponding service policy template according to the type of service and service type provided by the IPTV service system.
  • service policy templates ultra high definition, high definition, and standard definition, respectively:
  • Step 201 After the IPTV service system formulates the corresponding service policy template, the IPTV service system notifies the CDN central management system of the service policy template information.
  • Step 202 After successfully receiving the service policy template information, the CDN central management system sends the IPTV to the IPTV.
  • the service system sends a successful message to receive the message; and according to the received service policy template information, combined with the requirements of the CDN service and the implementation deployment, the CDN system itself generates a corresponding business policy template corresponding to the ultra high definition, high definition, and standard definition; that is, the CDN
  • the central management system After receiving the customized service policy template of the IPTV service system, the central management system generates a service policy template that can be run according to the service policy requirements, that is, according to the customized service policy template of the IPTV service system, local parameter setting and setting implementation are implemented.
  • Step 203 The CDN central management system sends a message to the network device management system, and requests the network device management system to generate a corresponding network policy template for the service policy template.
  • Step 204 The network device management system generates a corresponding network policy template according to the request, such as: ultra high definition, guaranteed bandwidth 20M; high definition, guaranteed bandwidth 8M; standard definition, guaranteed bandwidth 2M; after generating the corresponding network policy template, to each fusion device
  • the network components are delivered;
  • Step 205 After successfully receiving the network policy template, the network component of the converged device sends a successful receiving message to the network device management system.
  • Step 206 After successfully sending the network policy template to each converged device, the network device management system sends a completion message to the CDN central management system.
  • Step 207 After receiving the completion message of the network policy template, the CDN central management system sends a service policy template to the CDN component of each converged device.
  • Step 208 After successfully receiving the service policy template, the CDN component of each converged device sends a successful receiving message to the CDN central management system.
  • the corresponding network policy template is deployed on the network component of the converged device, and the corresponding service policy template is deployed on the CDN component.
  • the system mainly includes: STB, EPG, IPTV service
  • the system, the converged device, the upper/center CDN node, the specific service implementation steps are as follows:
  • Step 301 The user needs to order the IPTV service, and the STB sends the user's on-demand program request to the EPG system.
  • Step 302 The EPG sends an on-demand request of the user to the IPTV service system.
  • Step 303 The IPTV service system performs service authentication on the user, queries whether the user subscribes to the service, and has the right to view the program. If the user has the right to view, the information is recorded by using the correspondence between the IPTV user address pool and the CDN service node. a converged device that serves the STB, and sends the converged device information to the EPG through an authentication success response message or a separate message; if there is no right to view, the feedback authentication failure response message is fed;
  • Step 304 The EPG system receives the user authentication feedback information sent by the IPTV service system. If the user authentication fails, the EPG system changes to the service subscription process. If the user authentication succeeds, the serviceable fusion device information sent by the IPTV service system is used. Transmitting the service service node information and the URL information to the STB, where the service node is a converged device;
  • Step 305 The STB sends a media service request to the convergence device according to the obtained service node information and the URL information.
  • Step 306 The CDN component of the converged device receives the access request of the user, and according to its own judgment, determines whether there is sufficient CDN capability to provide the content distribution service for the user; if the judgment result is yes, the user request is accepted; if the judgment result is no Then, the error processing is performed; when the error occurs, the corresponding information is recorded, such as: insufficient CDN resources, application types accessed by the user, etc.; corresponding statistics and aggregations are provided, which facilitates the subsequent expansion; if the user is accepted, the user accesses
  • the application type such as: ultra-high-definition video, high-definition video, standard-definition video, etc., is determined to correspond to the corresponding service policy template; and the network policy corresponding to the service policy template is requested from the network component through the internal interface according to the corresponding service policy template.
  • Request network security
  • Step 307 The network component receives the network security policy request of the user, and corresponding to the corresponding network policy template according to the service policy template information, and applies the corresponding network policy template;
  • the execution result message is fed back to the CDN component; if the network policy is successfully executed, the network resource can guarantee the user's service and continue the process; if the network policy is unsuccessful, the error processing is performed; the error may be due to insufficient network resources.
  • corresponding records, statistical processing, etc. can be made to provide a basis for subsequent expansion;
  • Step 308 at this point, the deployment of the service policy and the deployment of the network policy can guarantee the IPTV service of the user, and can also start the service;
  • the CDN component of the convergence device sends a service start request to the IPTV service system;
  • the IPTV service system receives Request message, record service start; start to serve the user;
  • Step 309 the CDN system component starts to provide a media distribution service to the user, and the CDN component checks whether the local cache has the media content requested by the user, and if so, directly distributes to the user; if not, the upper/center CDN node needs to request and Obtain and then distribute to the user;
  • the CDN component of the converged device cooperates with the external CDN node to form a multi-level CDN structure; the upward content acquisition of the converged device depends on the CDN dependency and networking structure.
  • the superior/central CDN node returns the corresponding media content according to the content request of the converged device.
  • Step 410 In this process, the user obtains the continuous media content service until the service is provided, or the user switches the program, the STB closes the media service link; and the closed link message triggers the user content status maintained in the CDN component of the fusion device.
  • the shutdown request of the machine before the state machine is shut down, the corresponding policy of the service needs to be revoked; within the CDN component, the service policy template of the service is revoked, and related resources are released;
  • Step 411 The CDN component requests the network component to cancel the network policy of the IPTV service service through the internal interface, and restores the original network policy of the user.
  • Step 412 After receiving the policy revocation request of the CDN component, the network component cancels the network policy of the IPTV service, restores the network policy of the user, and feeds back the execution result to the CDN component.
  • Step 413 the CDN component 4 sells the network component.
  • the IPTV service system After the network strategy of the IPTV service, The IPTV service system sends a service end request to close the user state machine; after receiving the service end request, the IPTV service system ends the recording service;
  • the IPTV service system can be charged according to the requirements of the specific implementation, and can be charged in the network component of the converged device, can be charged in the CDN component of the converged device, or combined with each other; the IPTV service system records Information about the content, number of times, duration, etc. used by the user; the network components of the converged device, recording specific network usage, bandwidth usage, network policy, network duration, traffic, etc.; CDN components of the converged device, recording the specific content usage, Content policy, content traffic, and more.
  • the fusion device According to the specific implementation process of the IPTV service, the fusion device, the fusion system, and the fusion method in the embodiments of the present invention have the following features:
  • the network system and the CDN system exist as components of the system equipment, and are a loosely coupled architecture, achieving device level integration;
  • the network component and the CDN component have their own user state machines, and the state machines of the two are independent of each other;
  • the network component and the CDN component respectively maintain the user's network state machine and content state machine, which facilitates user-based refined operation and service guarantee;
  • the CDN component is managed by a unified CDN central management system.
  • the CDN central management system can be set independently or incorporated into the network management system of the converged device described herein as an integral part of the network management system;
  • the network component notifies the CDN component of the IPTV user address pool information of the device through the internal interface
  • the correspondence between the local IPTV address pool and the local CDN service node generated by the CDN component of the converged device has been recorded;
  • the CDN component of the converged device reports the correspondence record between the local IPTV address pool and the local CDN service node to the CDN central management system;
  • the CDN central management system records the correspondence between the IPTV address pool and the CDN service node reported by each converged device, maintains the corresponding database, and synchronizes with the IPTV service system;
  • the IPTV service system generates a corresponding service policy template according to the service type provided by the IPTV service system, and delivers the template to the CDN central management system;
  • the CDN central management system requests the network device management system to generate a network policy template corresponding to the service policy template;
  • the IPTV service system performs the authentication according to the user address and the information of the CDN service node, determines the CDN component of the converged device serving the user, and includes the scheduling result information in the authentication. In the success message, return together;
  • the CDN component of the converged device performs resource judgment to determine whether there are enough CDN resources to satisfy the user's request, and then accepts the user request, otherwise the error processing is performed;
  • the CDN component of the converged device performs service request judgment, and determines a corresponding service policy template
  • the network component of the converged device can apply the corresponding network policy template according to the request of the CDN component;
  • the CDN component of the converged device may request the network component to revoke the network policy template corresponding to the service policy template, and restore the original network policy;
  • the IPTV service implementation method is based on a new type of device that combines CDN and network.
  • the CDN component of the CDN and the network convergence device establishes an application link with the user to provide a service;
  • the implementation method of the IPTV service is based on the CDN and the network convergence device, so that the network connection and the application layer link of the user are all on the network device, and the cooperation between the application and the network is more easily realized, and the service quality of the IPTV service is better guaranteed.
  • the embodiment of the present invention implements an IPTV service based on a converged device.
  • the CDN content distribution function and the network service function By combining the CDN content distribution function and the network service function, the network connection and the application layer link of the same user are placed on the network device, and Good coordination, it is easier to achieve the quality of service guarantee for IPTV services. It also makes the allocation of network bandwidth and the deployment of network policies more flexible.
  • the embodiment of the present invention combines a network device and a CDN device into a new type of device, and adopts a loosely coupled fusion mode, which is easier to deploy and expand.
  • the CDN component and the network component respectively maintain the user's content state machine and network state machine, and increase the internal interaction interface between the CDN component and the network component to achieve state cooperation, and have the basis of user-based refined operation and service guarantee. .
  • the implementation method of the IPTV service is provided, and the IPTV application is carried by the CDN and the network convergence device, so that the application layer link and the network layer connection of the IPTV application are all on the fusion device, and better coordination and cooperation can be realized;
  • Deploying corresponding business policies and network policies to achieve the corresponding and linkage of business policies and network policies can provide high-quality service guarantee for IPTV services. It also makes the allocation of network bandwidth and the deployment of network policies more flexible.
  • the embodiment of the present invention combines the CDN content distribution function and the network service function
  • a user's network connection and application layer links are placed on the network device to better coordinate and make it easier to guarantee the quality of service of the IPTV service. It also makes the allocation of network bandwidth and the deployment of network policies more flexible.
  • better grasp the service types, CDN resources and network resource usage statistics of IPTV users provide a solid basis for capacity expansion, avoid the ability mismatch caused by CDN and network separation, fail to meet demand, and cause investment waste.

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Abstract

本发明公开了一种实现IPTV业务的融合设备、系统和方法，所述融合设备集成有CDN部件和网络部件；CDN部件，配置为接收STB发起的媒体服务请求，并在业务策略模板数据库中查找与该请求携带的业务类型相匹配的业务策略模板，向网络部件发起网络支持请求，并在接收到网络部件反馈的成功响应消息后，利用查询到的业务策略模板为STB提供服务；网络部件，配置为接收到网络支持请求后，在网络策略模板数据库中查找与业务策略匹配的网络策略模板，执行查询到的网络策略模板，并在执行成功时，反馈成功响应消息，并利用网络策略模板为CDN部件提供网络资源支持。本发明将内容分发功能和网络服务功能融合，有效地保障了IPTV业务的服务质量。

Description

一种实现交互式网络电视业务的融合设备、 系统和方法 技术领域
本发明涉及通信技术领域， 尤其涉及一种实现交互式网络电视（IPTV ) 业务的融合设备、 系统和方法。 背景技术
IPTV是电信运营商开展内容运营和服务的主要手段和平台， 通过 IPTV 平台， 电信运营商不仅提供了视频服务， 还开发了大量的增值应用服务。
IPTV是电信运营商实现用户每用户平均收入 ( ARPU， Average Revenue Per User )值提升， 增加运营收入的重要的手段。
随着 IPTV业务的大规模发展， 电信运营商为保障用户业务使用体验， 提高内容分发的效率，节省网络带宽，需要部署大量的内容分发网络（CDN， Content Delivery Network )系统， 同时还需进行大规模的网络改造， 以满足 IPTV业务开展带来的高带宽， 高网络质量要求， 投资规模巨大。
但目前 CDN和网络还是相对独立的， CDN能力和网络带宽都可能成为 瓶颈， 影响用户体验。 导致了电信运营商只能靠简单的网络扩容， 保证网 络不拥塞； 同时大规模建设 CDN， 保证 CDN的承载容量， 以保障自营 IPTV 业务的服务质量。 造成了大量的投资浪费。 且建设时， 均是按照经验值进 行 CDN资源和网络资源的规划和建设， 遇到用户量特别集中的地区， 依然 可能会出现业务拥塞， 服务无法保障的情况。
所以， 目前如何能够实现 CDN能力和网络能力相匹配、 能够感知用户 IPTV业务、 能够根据 IPTV业务的使用情况进行内容层面和网络层面的调整 和保障， 以保障用户体验； 以及能够根据使用 IPTV业务的用户数量， 资源 占用， 做出灵活调整策略， 以及给出扩容的建议， 成为目前亟待解决的技 术问题。 发明内容
鉴于上述问题， 提出了克服上述问题或者至少部分地解决上述问题的 一种实现 IPTV业务的融合设备、 系统和方法。
依据本发明实施例的一个方面，本发明实施例提供一种实现 IPTV业务 的融合设备， 所述融合设备集成有内容分发网络 CDN部件和网络部件， 且 所述 CDN部件与所述网络部件间设有内部通信接口；
所述 CDN部件， 包括：
第一查询单元， 配置为接收机顶盒 STB发起的媒体服务请求， 并在预 先配置的业务策略模板数据库中查找与所述媒体服务请求携带的业务类型 相匹配的业务策略模板；
内容服务单元， 配置为向所述网络部件发起网络支持请求， 并在接收 到所述网络部件反馈的成功响应消息后， 利用查询到的业务策略模板为所 述 STB提供媒体流服务；
所述网络部件， 包括：
第二查询单元， 配置为接收到所述网络支持请求后， 在预先配置的网 络策略模板数据库中查找与所述业务策略匹配的网络策略模板；
请求响应单元， 配置为执行查询到的网络策略模板， 并在执行成功时， 向所述 CDN部件反馈成功响应消息， 以及利用所述网络策略模板为所述 CDN部件提供网络资源支持。
优选地， 本发明实施例所述融合设备中， 所述第一查询单元， 还配置 为在接收到所述媒体服务请求时，检测当前 CDN能力是否能够接纳所述媒 体服务请求， 若是， 则查找所述业务策略模板数据库。
优选地， 本发明实施例所述融合设备中：
所述第一查询单元，还配置为在检测当前 CDN能力不能接纳所述媒体 服务请求时， 返回失败提示信息， 并记录失败原因以及请求的媒体信息； 所述请求响应单元， 还配置为在执行查询到的网络策略模板时， 若执 行不成功， 则返回失败响应消息， 并记录失败原因以及执行的网络策略模 板。
优选地， 本发明实施例所述融合设备中：
所述 CDN部件， 还包括： 内容加速撤销单元， 配置为在检测到所述 STB 断开媒体服务连接时， 撤销所述业务策略模板， 释放资源， 并向所述 网络部件发送策略撤销请求；
所述网络部件， 还包括： 网络加速撤销单元， 配置为在接收到所述策 略撤销请求后， 撤销所述网络策略模板， 并恢复用户原有网络策略。
优选地， 本发明实施例所述融合设备中， 所述内容服务单元， 还配置 为在利用所述业务策略模板为所述 STB提供媒体流服务时， 向 IPTV业务 系统发送服务开始通知消息； 以及在所述内容加速撤销单元撤销所述业务 策略模板时， 向 IPTV业务系统发送服务结束通知消息。
优选地， 本发明实施例所述融合设备中：
所述 CDN部件， 还包括： 第一信息记录单元， 配置为在所述内容加速 撤销单元撤销所述业务策略模板后， 记录 CDN部件本次服务的媒体内容、 业务策略模板和媒体内容流量信息； 和 /或，
所述网络部件， 还包括： 第二信息记录单元， 配置为在所述网络加速 撤销单元撤销所述网络策略模板后， 记录网络部件本次服务采用的网络策 略模板、 使用的带宽和使用时长信息。
优选地， 本发明实施例所述融合设备中， 所述内容服务单元， 还配置 为在利用所述业务策略模板为所述 STB提供媒体流服务时， 检测本地是否 緩存有请求的媒体内容， 若有， 直接向所述 STB分发； 否则， 根据网络分 层部署， 向上级内容分发节点请求获取后， 向所述 STB分发； 其中， 所述 上级内容分发节点为独立的 CDN节点或者为融合设备中的 CDN部件。 优选地， 本发明实施例所述融合设备中， 所述 CDN部件与网络部件间 为松耦合关系。
依据本发明实施例的另一个方面， 本发明实施例还提供一种实现 IPTV 业务的融合系统， 包括： IPTV业务系统、 CDN中心管理系统、 网络设备管 理系统、 以及融合设备；
所述 IPTV业务系统， 配置为接收 STB发送的用户点播请求， 获取该 点播请求中携带的用户地址信息， 在预先配置的映射关系数据库中获取与 所述用户地址信息匹配的融合设备的 CDN部件的对外服务地址信息， 并将 获取的地址信息通过电子节目菜单 EPG发送至所述 STB， 即，告知 STB为 其服务的融合设备；
所述 CDN中心管理系统和网络设备管理系统，分别配置为对融合设备 的 CDN部件和网络部件进行维护和管理。
优选地， 本发明实施例所述融合系统中， 所述 IPTV业务系统中， 映射 关系数据库的配置方式包括：
所述融合设备的网络部件将自身维护的 IPTV 用户的地址池发送至所 述 CDN部件；
所述 CDN部件接收到的所述地址池后， 结合自身的 CDN服务地址， 生成 IPTV用户地址池与 CDN部件间的对应关系， 并将该对应关系通过所 述 CDN中心管理系统同步到 IPTV业务系统；
所述 IPTV业务系统利用所述 CDN中心管理系统同步的各融合设备的 IPTV用户地址池与 CDN部件的对应关系， 生成映射关系数据库。
优选地， 本发明实施例所述融合系统中， 所述融合设备中 CDN部件查 询的业务策略模板数据库和网络部件查询的网络策略模板数据库的配置方 式包括： 所述 IPTV 业务系统根据各业务类型定制与各业务类型对应的业务策 略模板， 并将各业务策略模板发送至所述 CDN中心管理系统；
所述 CDN中心管理系统利用接收到的各所述业务策略模板，生成 CDN 系统侧的业务策略模板， 并将生成的各业务策略模板分别发送至所述融合 设备的 CDN部件和所述网络设备管理系统；
所述网络设备管理系统接收到业务策略模板后， 生成支持各业务策略 模板的网络策略模板， 并将各所述网络策略模板发送至所述融合设备的网 络部件；
所述 CDN部件接收到各业务策略模板后， 生成业务策略模板数据库， 所述网络部件接收到各网络策略模板后， 生成网络策略模板。
优选地， 本发明实施例所述融合系统中， 所述 IPTV业务系统， 还配置 为基于所述融合设备发送的服务开始和结束通知消息， 记录计费信息； 所 述计费信息包括： 媒体内容、 请求次数和服务时长信息。
再者， 本发明实施例还提供一种实现 IPTV业务的融合方法， 包括：
IPTV业务系统接收 STB发送的用户点播请求，获取该点播请求中携带 的用户地址信息后， 在预先配置的映射关系数据库中获取与所述用户地址 信息匹配的融合设备， 并将获取的融合设备信息通过电子节目菜单 EPG发 送至所述 STB;
所述 STB向所述融合设备的 CDN部件发起的媒体服务请求； 所述融合设备的 CDN部件接收到媒体服务请求后，在预先配置的业务 策略模板数据库中查找与所述媒体服务请求携带的业务类型相匹配的业务 策略模板， 并向所述融合设备的网络部件发起网络支持请求；
所述融合设备的网络部件接收到所述网络支持请求后， 在预先配置的 网络策略模板数据库中查找与所述业务策略匹配的网络策略模板， 执行查 询到的网络策略模板， 并在执行成功时， 向所述 CDN部件反馈成功响应消 息， 以及利用所述网络策略模板为所述 CDN部件提供网络资源支持； 所述融合设备的 CDN部件在接收到所述网络部件反馈的成功响应消息 后， 利用查询到的业务策略模板为所述 STB提供媒体流服务。
本发明实施例有益效果如下：
本发明实施例所述融合设备、 系统和方法， 通过把 CDN内容分发功能 和网络服务功能的融合， 把同一个用户的网络连接和应用层链接都放在了 网络设备上， 更好进行协同， 更容易实现 IPTV业务的服务质量保障。 也使 得网络带宽的分配， 网络策略的部署更加灵活。 同时， 更好掌握 IPTV用户 使用的业务类型， CDN资源和网络资源情况的需求统计， 为扩容提供确实 的依据， 避免 CDN和网络分离造成的能力不匹配， 不能满足需求， 造成投 资浪费等问题。 附图说明
图 1为本发明实施例提供的一种实现 IPTV业务的融合设备的结构框图； 图 2为本发明实施例提供的一种实现 IPTV业务的融合系统的结构框图； 图 3为本发明实施例提供的一种实现 IPTV业务的融合方法的流程图； 图 4为本发明实施例中融合设备的系统组网图；
图 5为本发明实施例中融合设备的内部结构框图；
图 6为本发明实施例中 IPTV用户的调度和定位策略的部署流程图； 图 7为本发明实施例中 IPTV用户业务策略和网络策略的预设的处理流 程图；
图 8为本发明实施例中融合设备实现 IPTV业务的具体流程图。 具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进 行清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没 有做出创造性劳动前提下所获得的所有其他实施例， 都属于本发明保护的 范围。
为了解决现有技术中 CDN节点与网络设备间独立部署， 使得 CDN能力 与网络能力不匹配， 不能根据 IPTV业务的使用情况进行内容层面和网络层 面的调整和保障、 以及不能根据使用 IPTV业务的用户数量、 资源占用做出 灵活的调整策略以及给出扩容建议， 进而影响 IPTV的业务质量的问题。 本 发明实施例提供一种实现 IPTV业务的融合设备、 系统和方法。
下面通过几个具体实施例对本发明所述融合设备、 融合系统和融合方 法进行详细阐述。
实施例一
本发明实施例提供一种实现 IPTV业务的融合设备， 该融合设备把 CDN 和网络设备融合在一起， 实现了一种新型态设备， 通过这种融合设备以及 在此设备上实现的 IPTV业务承载， 可以最有效的实现用户 IPTV业务的使用 状态与 CDN资源、 网络资源的高效协同， 保障 IPTV业务体验； 同时， 可以 结合 CDN资源和网络资源的情况， 做策略调整和用户准入调整， 优化资源 的利用和网络建设和规划， 极大的提高了 IPTV的业务质量。
如图 1所示， 本发明实施例所述融合设备集成有 CDN部件（相当于 CDN 网络中的 CDN节点） 110和网络部件 120， 且所述 CDN部件 110与所述网络部 件 120间设有内部通信接口； 优选地， CDN部件 110与网络部件 120间为松耦 合关系。
其中， CDN部件 110， 包括：
第一查询单元 111， 配置为接收机顶盒 STB发起的媒体服务请求， 并在 预先配置的业务策略模板数据库中查找与所述媒体服务请求携带的业务类 型相匹配的业务策略模板； 内容服务单元 112， 配置为向所述网络部件 120发起网络支持请求， 并 在接收到所述网络部件 120反馈的成功响应消息后， 利用查询到的业务策略 模板为所述 STB提供媒体流服务；
网络部件 120， 包括：
第二查询单元 121， 配置为接收到所述网络支持请求后， 在预先配置的 网络策略模板数据库中查找与所述业务策略匹配的网络策略模板；
请求响应单元 122， 配置为执行查询到的网络策略模板， 并在执行成功 时， 向 CDN部件 110反馈成功响应消息， 以及利用所述网络策略模板为 CDN 部件 110提供网络资源支持。
上述为本发明实施例所述融合设备的主体架构及其实现 IPTV业务承载 的实现方式， 下面给出融合设备在 IPTV业务承载过程中的一些优选或者具 体实现方式， 涉及如下内容：
可选地， 所述 CDN部件 110， 还包括： 内容加速 4敦销单元 113， 配置为 在检测到所述 STB断开媒体服务连接时，撤销所述业务策略模板，释放资源， 并向网络部件 120发送策略撤销请求；
网络部件 120， 还包括： 网络加速撤销单元 123， 配置为在接收到所述 策略撤销请求后， 撤销所述网络策略模板。
其中， 内容加速撤销单元 113和网络加速撤销单元 123在撤销业务策略 模板和网络策略模板后，自动将业务策略和网络策略恢复到 STB请求前的策 略状态。
优选地， 所述 CDN部件 110的内容服务单元 112， 还配置为在利用所述 业务策略模板为所述 STB提供媒体流服务时， 向 IPTV业务系统发送服务开 始通知消息； 以及在所述内容加速撤销单元撤销所述业务策略模板时， 向 IPTV业务系统发送服务结束通知消息。 也就是说， 本发明实施例中融合设 备在服务开始和服务结束时， 通知 IPTV业务系统， 以便 IPTV业务系统准确 对 STB用户进行计费。
可选地， 本发明实施例中， 融合设备也可以在服务过程中进行记录相 关服务信息， 从而扩展了 IPTV业务系统的计费信息， 可以为用户提供更明 细的计费清单， 以及为系统调用业务使用情况提供依据。 对此， 本发明实 施例所述融合设备中：
所述 CDN部件 110， 还包括： 第一信息记录单元 114， 配置为在所述内 容加速撤销单元撤销所述业务策略模板后， 记录 CDN部件本次服务的媒体 内容、 业务策略模板和媒体内容流量信息； 和 /或，
所述网络部件 120， 还包括： 第二信息记录单元 124， 配置为在所述网 络加速撤销单元撤销所述网络策略模板后， 记录网络部件本次服务采用的 网络策略模板、 使用的带宽和使用时长信息。
优选地， 本发明实施例所述融合设备还具有以下特点：
所述 CDN部件 110中， 第一查询单元 111， 还配置为在接收到所述媒体 服务请求时， 检测当前 CDN能力是否能够接纳所述媒体服务请求， 若是， 则查找所述业务策略模板数据库。 其中， CDN能力是指当前 CDN部件的资 源能力、可处理的业务类型能力等影响 CDN部件正常接入业务的能力信息。
优选地， 第一查询单元 111， 还配置为在检测当前 CDN能力不能接纳所 述媒体服务请求时， 返回失败提示信息， 并记录失败原因以及请求的媒体 信息；
网络部件 120中， 请求响应单元 122， 还配置为在执行查询到的网络策 略模板时， 若执行不成功， 则返回失败响应消息， 并记录失败原因以及执 行的网络策略模板。
本发明实施例中， 通过第一查询单元 111和请求响应单元 122实时的记 录 CDN部件和网络部件不可服务的情况及具体的不可服务原因及请求服务 的参数， 可以便于为后续扩容提供依据。 优选地， 所述 CDN部件 110中， 内容服务单元 112， 还配置为在利用业 务策略模板为所述 STB提供媒体流服务时，检测本地是否緩存有请求的媒体 内容， 若有， 直接向所述 STB分发； 否则， 根据网络分层部署， 向上级内容 分发节点请求获取后， 向所述 STB分发； 其中， 所述上级内容分发节点为独 立的 CDN节点或者为融合设备中的 CDN部件。
本发明实施例中， 融合设备的 CDN部件与外置独立的 CDN节点等同， 可以和外部独立的 CDN节点在同层次进行交互、 集群以及协同。 也可以和 外部独立 CDN节点形成多级结构， 满足不同场景下地组网和业务服务需求。
综上所述，本发明实施例中所述融合设备融合有 CDN部件和网络部件， 使得用户的网络连接和应用层链接都在网络设备上， 更容易实现应用和网 络的协同， 更好保障 IPTV业务的服务质量。
实施例二：
如图 2所示， 本发明实施例提供一种实现 IPTV业务的融合系统， 包括： IPTV业务系统 210、 CDN中心管理系统 230、 网络设备管理系统 240、 以及若 干如实施例一所述的融合设备 220; 本实施例中， 对于融合设备实现 IPTV业 务的承载方式仅作简单陈述， 具体实现过程参见实施例一；
所述 IPTV业务系统 210， 配置为接收 STB发送的用户点播请求， 获取该 点播请求中携带的用户地址信息， 在预先配置的映射关系数据库中获取与 所述用户地址信息匹配的融合设备， 并将获取的融合设备信息通过电子节 目菜单 EPG发送至所述 STB;
所述融合设备 220， 包括 CDN部件和网络部件； 所述 CDN部件， 配置为 接收 STB发起的媒体服务请求，并在预先配置的业务策略模板数据库中查找 与所述媒体服务请求携带的业务类型相匹配的业务策略模板， 并向网络部 件发起网络支持请求， 以及在接收到所述网络部件反馈的成功响应消息后， 利用查询到的业务策略模板为所述 STB提供媒体流服务； 所述网络部件， 配 置为接收到所述网络支持请求后， 在预先配置的网络策略模板数据库中查 找与所述业务策略匹配的网络策略模板， 执行查询到的网络策略模板， 并 在执行成功时， 向所述 CDN部件反馈成功响应消息， 以及利用所述网络策 略模板为所述 CDN部件提供网络资源支持。
所述 CDN中心管理系统 230和网络设备管理系统 240， 分别配置为对融 合设备的 CDN部件和网络部件进行维护和管理。
优选地， 本发明实施例所述的系统除了包含为用户直接提供服务的融 合设备， 还可以包含独立的 CDN节点， 该 CDN节点构成融合设备的上级 /中 心节点， 用以为融合设备提供内容支持。
上述为本发明实施例所述融合系统的主体架构及其实现 IPTV业务承载 的实现方式， 下面给出融合系统在 IPTV业务承载过程中的一些优选或者具 体实现方式， 涉及如下内容：
优选地， 所述融合系统中， IPTV业务系统 210中， 映射关系数据库的配 置方式包括： 部件；
CDN部件接收到的所述地址池后， 结合自身的 CDN服务地址， 生成 IPTV用户地址池与 CDN部件间的对应关系， 并将该对应关系通过 CDN中心 管理系统 230同步到 IPTV业务系统 210；
IPTV业务系统 210利用 CDN中心管理系统 230同步的各融合设备的 IPTV用户地址池与 CDN部件的对应关系， 生成映射关系数据库。
优选地， 融合设备 220中， 业务策略模板数据库和网络策略模板数据库 的配置方式包括：
IPTV业务系统 210根据各业务类型定制与各业务类型对应的业务策略 模板， 并将各业务策略模板发送至 CDN中心管理系统 230; CDN中心管理系统 230利用接收到的各业务策略模板，生成 CDN系统侧 的业务策略模板， 并将生成的各业务策略模板分别发送至融合设备 220的 CDN部件和网络设备管理系统 240;其中， CDN部件接收到业务策略模板后， 生成业务策略模板数据库；
所述网络设备管理系统接收到业务策略模板后， 生成支持各业务策略 模板的网络策略模板， 并将各所述网络策略模板发送至所述融合设备的网 络部件； 其中， 网络部件接收到业务策略模板后， 生成网络策略模板数据 库。
优选地， 本发明实施例所述融合系统中， IPTV业务系统 210， 还配置为 基于融合设备 220发送的服务开始和结束通知消息， 记录计费信息； 所述计 费信息包括： 媒体内容、 请求次数和服务时长信息。
优选地， 本发明实施例所述融合系统中， CDN中心管理系统 230采用集 中部署的方式， 与域名解析系统（DNS )服务器， 资源调度和负载均衡系 统（ GSLB )统一部署， 实现对本区域 CDN和融合设备中的 CDN部件以及外 置 CDN节点的管理和维护， 业务适配， 资源的调度等； 可以作为独立的系 统部署， 也可以和网络设备管理 240系统进行融合， 作为网管系统的组成部 分， 与网管系统统一部署。
综上所述， 本发明实施例所述系统， 利用融合有 CDN部件和网络部件 的融合设备， 使得用户的网络连接和应用层链接都在网络设备上， 更容易 实现应用和网络的协同， 更好保障 IPTV业务的服务质量。
实施例三：
如图 3所示， 本发明实施例提供一种实现 IPTV业务的融合方法， 包括： 步骤 S301， IPTV业务系统接收 STB发送的用户点播请求， 获取该点播 请求中携带的用户地址信息；
步骤 S302， IPTV业务系统在预先配置的映射关系数据库中获取与所述 用户地址信息匹配的融合设备， 并将获取的融合设备信息通过 EPG发送至 STB;
步骤 S303， STB向所述融合设备的 CDN部件发起的媒体服务请求； 步骤 S304， 融合设备的 CDN部件接收到媒体服务请求后， 在预先配置 的业务策略模板数据库中查找与所述媒体服务请求携带的业务类型相匹配 的业务策略模板， 并向所述融合设备的网络部件发起网络支持请求；
步骤 S305， 融合设备的网络部件接收到网络支持请求后， 在预先配置 的网络策略模板数据库中查找与所述业务策略匹配的网络策略模板；
步骤 S306， 融合设备执行查询到的网络策略模板， 并在执行成功时， 向所述 CDN部件反馈成功响应消息， 以及利用所述网络策略模板为所述 CDN部件提供网络资源支持；
步骤 S307， 融合设备的 CDN部件在接收到所述网络部件反馈的成功响 应消息后， 利用查询到的业务策略模板为所述 STB提供媒体流服务。
实施例四：
本发明实施例是对实施例一所述的融合设备、 实施例二所述的融合系 统以及实施例三所述的融合方法实现 IPTV业务承载的集中阐述， 具体涉及 如下内容：
如图 4所示， 为本发明实施例中融合设备的系统组网图。 从系统上看融 合设备可分布式部署， 但需要有一个中心管理系统实施统一的管理和调度， 实施统一的内容管理、 业务监控、 网络管理、 DNS的解析以及资源的调度 和负载均衡等。
融合设备， 融合了 CDN功能和网络功能， 采用 CDN部件为作为内容分 发节点， 为用户提供内容分发服务； 采用网络部件为用户提供网络接入和 承载服务。 其中， CDN部件和 CDN中心管理系统建立管理通道和业务通道， 采用管理通道实现网络的日常维护管理， 设备的监控等； 采用业务通道实 现内容的下发， 业务信息的交互等。
从部署上看， CDN部件可以和网络上的核心路由器， 业务路由器 (BRAS/SR)， 交换机等设备进行融合。 由于 BRAS/SR是 IPTV用户的业务控 制点， 拥有用户的网络状态信息， 所以本发明中优选地将 CDN设备和 BRAS/SR设备融合， 从而实现 CDN用户状态和网络用户状态的协同， 通过 用户状态的协同可以实现用户的应用内容和网络质量的双重保障， 从而提 高用户体验。
从组网上看，融合设备的 CDN部件可等同 CDN节点看待，可与外置 CDN 设备联合组网，可在同层次进行联动，形成集群； 也可组成多级架构的 CDN 网络， 满足不同场景的部署和业务需求。
CDN中心管理系统采用集中部署的方式， 与 DNS服务器， 资源调度和 负载均衡系统（GSLB )统一部署， 实现对本区域 CDN和网络融合设备中的 CDN部件以及外置 CDN节点的管理和维护， 业务适配， 资源的调度等； 可 以作为独立的系统部署， 也可以和融合设备的网管系统进行融合， 作为网 管系统的组成部分， 与网管系统统一部署。
如图 5所示， 为融合设备的大体内部结构图。 在本发明实施例中， 融合 设备融合了 CDN的内容分发节点和网络设备，采用松耦合的方式进行融合， CDN部件采用独立的 CDN业务处理板型态， 网络部件也采用独立的网络业 务处理板型态； 从而大大降低融合的复杂度， 同时也提高了系统的扩展性 和灵活度。 可根据具体的业务需要扩充网络部件或 CDN部件。
融合设备的 CDN部件为用户提供应用内容分发服务， 在提供服务的同 时为用户维持有相应的内容状态机， 记录用户内容服务的状态， 便于实现 基于用户的精细化运营。 CDN部件可针对用户实施内容加速和保障策略。
融合设备的网络部件为用户提供网络接入和承载服务， 在提供服务的 同时为用户维持有相应的网络状态机， 记录用户的网络服务状态， 便于实 现基于用户的精细化运营。 网络部件可针对用户实施网络加速和保障策略。 本发明实施例中， 为实现 CDN部件和网络部件的协同， 增加 CDN部件 和网络部件之间的内部信令交互接口； 交互的信息包括： 网络部件向 CDN 部件上报用户地址池， CDN部件向网络部件申请用户网络加速及接收执行 反馈信息， 用户的状态查询及反馈等； 状态信息的协同和服务策略的调整 等， 能更好地保障用户体验。
如图 6所示， 为本发明实施例中 IPTV用户的调度和定位策略的部署流 程。 由于在本发明实施例中， 将 IPTV用户的网络层连接和应用层链接均定 位在同一台融合设备上， 由融合设备的网络部件为用户提供网络服务， 由 融合设备的 CDN部件为用户提供内容分发服务， 从而可以通过内部接口实 现 CDN部件和网络部件的联动， 更好保障 IPTV用户的业务体验， 更灵活地 进行调整。 因而需要一定的策略对用户进行调度和定位。 本发明实施例中， 实现对 IPTV业务系统实现对融合设备的调度和定位方式具体包括：
步骤 101、 由融合设备的网络部件维护本设备下的 IPTV用户的地址池； 网络部件通过与 CDN部件的内部接口， 通告 IPTV用户地址池信息；
步骤 102、 CDN部件成功接收到 IPTV用户地址池信息， 向网络部件发送 接收成功消息； 如 CDN部件接收失败， 则向网络部件发送接收失败消息， 网络部件将重新发送； CDN部件成功接收到本设备的 IPTV用户地址池信息 后， 结合自身对外提供服务的 CDN节点的对外服务地址信息， 生成本融合 设备 IPTV用户地址池与 CDN服务节点的对应关系记录；
步骤 103、 CDN部件向 CDN中心管理系统上报本融合设备的 IPTV用户 地址池和 CDN服务节点的对应关系记录信息；
步骤 104、 CDN中心管理系统成功接收后， 向融合设备的 CDN部件发送 接收成功消息； 如接收失败则发送接收失败消息， 融合设备的 CDN部件将 重新发送； 步骤 105、 C DN中心管理系统统一管理和维护本网络中各融合设备的 IPTV用户地址池和 CDN服务节点的对应关系数据库； 并与 IPTV业务系统进 行同步；
步骤 106、信息同步成功， IPTV业务系统向 CDN中心管理系统发送同步 成功消息； 如同步失败， 则需进行重新同步；
CDN中心管理系统和 IPTV业务系统之间的信息同步， 可以分批量同步 和实时同步； 批量同步一般是系统初启， 系统切换等情况下， 统一进行同 步； 实时同步一般是在某台融合设备的 IPTV用户地址池变更， CDN服务节 点变更情况下的实时更新同步部分记录信息。
在 IPTV系统完成信息同步后， 就具备了根据 IPTV用户的地址对用户进 行调度和定位的能力， 可以在 IPTV用户的业务鉴权时， 根据用户的 IP地址， 对用户进行调度和定位， 将用户定位到与其网络连接同在一台融合设备上 的 CDN月良务节点 （即 CDN部件）；
如图 7所示， 为本发明实施例中， IPTV用户业务策略和网络策略的预设 的处理流程。 由于在本系统中， 可为用户提供不同的业务， 比如： 超高清， 高清， 标清； 不同的业务对内容分发和网络的带宽、 质量都有不同的要求； 因而需要有不同的业务策略和网络策略进行保障， 需要部署相应的业务策 略和网络策略； 而本系统采用 CDN部件对用户的业务访问进行判断， 应用 对应的策略的方式， 因而需要预部署相应的业务策略和网络策略；
IPTV业务系统根据自身提供的业务种类， 业务类型， 制定相应的业务 策略模板， 在此， 假设有三种业务策略模板， 分别为： 超高清， 高清， 标 清， 则有：
步骤 201， IPTV业务系统制定了相应的业务策略模板后， 向 CDN中心管 理系统通告业务策略模板信息；
步骤 202， CDN中心管理系统成功接收到业务策略模板信息后， 向 IPTV 业务系统发送成功接收消息； 并根据所收到的业务策略模板信息， 结合自 身 CDN服务和实施部署的要求， 生成 CDN系统自己的对应超高清， 高清， 标清的业务策略模板； 也就是说， CDN中心管理系统接收到 IPTV业务系统 定制的业务策略模板后， 会根据业务策略需求， 生成自身可运行的业务策 略模板， 即， 根据 IPTV业务系统定制的业务策略模板， 进行本地参数设置、 以及设置实现各业务策略的方法等。 当然， 这种转换属于本领域技术人员 所孰知的技术， 所以在此不做赘述。
步骤 203， CDN中心管理系统向网络设备管理系统发送消息， 请求网络 设备管理系统针对所述业务策略模板生成对应的网络策略模板；
步骤 204， 网络设备管理系统根据请求， 生成相应的网络策略模板，如： 超高清， 保证带宽 20M; 高清， 保证带宽 8M; 标清， 保证带宽 2M; 生成相 应的网络策略模板后， 向各融合设备的网络部件进行下发；
步骤 205、 融合设备的网络部件成功接收网络策略模板后， 向网络设备 管理系统发送成功接收消息；
步骤 206， 网络设备管理系统成功向各融合设备下发网络策略模板后， 向 CDN中心管理系统发送完成消息；
步骤 207， CDN中心管理系统收到网络策略模板下发完成消息后， 向各 融合设备的 CDN部件下发业务策略模板；
步骤 208， 各融合设备的 CDN部件成功接收业务策略模板后， 向 CDN中 心管理系统发送成功接收消息；
至此， 在融合设备的网络部件上部署了相应的网络策略模板， 在 CDN 部件上部署了相应的业务策略模板。
基于上述的 IPTV用户的调度和定位策略的部署、 以及 IPTV用户业务策 略和网络策略的预设， 下面详细说明融合设备的 IPTV业务实现处理流程， 如图 8所示， 该处理流程中， 涉及的系统主要包括： STB, EPG, IPTV业务 系统， 融合设备， 上级 /中心 CDN节点， 具体业务实现步骤如下：
步骤 301， 用户需要点播 IPTV业务， STB向 EPG系统发送用户的点播节 目请求；
步骤 302， EPG向 IPTV业务系统发送用户的点播请求；
步骤 303， IPTV业务系统对用户进行业务鉴权， 查询用户是否订购了该 业务，是否有权限观看该节目，若有权观看，则利用 IPTV用户地址池和 CDN 服务节点的对应关系记录信息，获取为 STB服务的融合设备， 并将该融合设 备信息通过鉴权成功响应消息或者单独的消息发送至 EPG; 若无权观看，反 馈鉴权失败响应消息；
步骤 304， EPG系统收到 IPTV业务系统发来的用户鉴权反馈信息， 如用 户鉴权失败， 则转向业务订购流程； 如果用户鉴权成功， 则基于 IPTV业务 系统发送的可服务的融合设备信息， 向 STB反馈业务服务节点信息和 URL 信息， 此处服务节点为融合设备；
步骤 305， STB根据获得的服务节点信息和 URL信息， 向融合设备发送 媒体服务请求；
步骤 306， 融合设备的 CDN部件接收到用户的访问请求， 根据自身的判 断， 判断是否有足够的 CDN能力为用户提供内容分发服务； 如果判断结果 为是， 则接纳用户请求； 如果判断结果为否， 则进行出错处理； 在出错时 记录相应的信息， 如： CDN资源不足， 用户访问的应用类型等； 进行相应 的统计， 汇总， 便于为后续的扩容提供依据； 如果接纳用户， 则根据用户 访问的应用类型， 如： 超高清视频， 高清视频， 标清视频等， 判断对应到 相应的业务策略模板； 并根据对应到的业务策略模板通过内部接口向网络 部件请求和业务策略模板对应的网络策略， 请求网络保障；
步骤 307， 网络部件收到用户的网络保障策略请求， 根据其中的业务策 略模板信息， 对应到相应的网络策略模板； 应用相应的网络策略模板； 并 向 CDN部件反馈执行结果消息； 如网络策略执行成功， 则说明网络资可保 障用户的业务， 继续本流程； 如网络策略执行不成功， 则进行出错处理； 出错的原因可能是网络资源不足， 此时 ， 可做相应的记录， 统计处理等， 为后续的扩容提供依据；
步骤 308， 至此， 进行业务策略的部署和网络策略的部署， 已可对用户 的 IPTV业务进行保障， 也可以开始服务； 融合设备的 CDN部件向 IPTV业务 系统发送服务开始请求； IPTV业务系统接收到请求消息， 记录服务开始； 开始向用户服务；
步骤 309， CDN系统部件开始向用户提供媒体分发服务， CDN部件检查 本地緩存是否有用户所请求的媒体内容， 如果有， 则直接向用户分发； 如 果没有， 则需向上级 /中心 CDN节点请求并获取， 然后再向用户分发；
在此过程中， 融合设备的 CDN部件与外部 CDN节点实现了协同， 组成 了多级 CDN的结构； 融合设备向上的内容获取， 取决于 CDN的依赖关系和 组网结构。 上级 /中心 CDN节点根据融合设备的内容请求， 返回相应的媒体 内容。
步骤 410， 在此过程中， 用户得到持续的媒体内容服务， 直至服务提供 完成， 或用户切换节目， 则 STB关闭该媒体服务链接； 关闭链接的消息会触 发融合设备 CDN部件中维护的用户内容状态机的关闭要求， 在状态机关闭 前， 需要撤销本次服务的相应策略； 在 CDN部件内部， 撤销本次服务的业 务策略模板， 释放相关资源；
步骤 411， CDN部件通过内部接口向网络部件请求撤销本次 IPTV业务服 务的网络策略， 恢复该用户原来的网络策略；
步骤 412， 网络部件收到 CDN部件的策略撤销请求后， 撤销本次 IPTV 业务的网络策略， 恢复用户的网络策略， 并将执行结果向 CDN部件反馈； 步骤 413， CDN部件 4敦销了网络部件本次 IPTV业务的网络策略后， 向 IPTV业务系统发送服务结束请求， 关闭用户状态机； IPTV业务系统收到服 务结束请求后， 记录服务结束；
关于计费方面， 可根据具体实施的要求在 IPTV业务系统计费， 可在融 合设备的网络部件计费， 可在融合设备的 CDN部件计费， 或相互结合进行 计费； IPTV业务系统记录着用户使用的内容， 次数， 时长等信息； 融合设 备的网络部件， 记录着具体的网络使用， 带宽使用， 网络策略， 网络时长， 流量等信息； 融合设备的 CDN部件， 记录着具体的内容使用， 内容策略， 内容流量等信息。
由上述 IPTV业务的具体实现过程， 可知本发明实施例所述融合设备、 融合系统和融合方法具有如下特点：
( 1 )网络系统和 CDN系统作为该系统设备的部件存在， 是一种松耦合 的架构， 实现了设备层面的融合；
( 2 )网络部件和 CDN部件都有自己的用户状态机， 两者的状态机相互 独立；
( 3 ) 网络部件和 CDN部件分别维护有用户的网络状态机和内容状态 机， 便于实现基于用户的精细化运营和服务保障；
( 4 ) 网络部件和 CDN部件之间通过内部系统接口和消息接口进行交 互； 使得网络能力和 CDN内容服务能力具备了协同的能力；
( 5 ) CDN部件由统一的 CDN中心管理系统进行管理，该 CDN中心管理 系统可独立设置， 也可纳入本文所述的融合设备的网管系统， 作为网管系 统的一个组成部分；
( 6 )网络部件通过内部接口向 CDN部件通告本设备的 IPTV用户地址池 信息；
( 7 ) 融合设备 CDN部件生成本地 IPTV地址池和本地 CDN服务节点的 对应关系 己录； ( 8 ) 融合设备 CDN部件向 CDN中心管理系统上报本地 IPTV地址池和 本地 CDN服务节点对应关系记录；
( 9 ) CDN中心管理系统根据各融合设备上报的 IPTV地址池和 CDN服 务节点对应关系记录， 维护相应的数据库， 并向 IPTV业务系统同步；
( 10 ) IPTV业务系统根据自身提供的业务类型， 生成相应的业务策略 模板， 并向所述 CDN中心管理系统下发；
( 11 ) CDN中心管理系统请求网络设备管理系统生成与业务策略模板 对应的网络策略模板；
( 12 ) IPTV业务系统在用户进行业务鉴权时， 鉴权成功， 则根据用户 地址和 CDN服务节点的信息进行调度， 确定为用户服务的融合设备的 CDN 部件， 并将调度结果信息包含在鉴权成功消息中， 一并返回；
( 13 ) 融合设备的 CDN部件进行资源判断， 判断是否有足够的 CDN资 源满足用户的请求， 有则接纳用户请求， 否则进行出错处理；
( 14 ) 融合设备的 CDN部件进行业务请求判断， 判断对应的业务策略 模板；
( 15 ) 融合设备的 CDN部件通过内部接口向网络部件请求响应的网络 策略保障；
( 16 ) 融合设备的网络部件可根据 CDN部件的请求， 应用相应的网络 策略模板；
( 17 )用户的应用完成， 应用链接关闭会触发 CDN部件的用户状态机 变化；
( 18 ) 融合设备的 CDN部件可向网络部件请求撤销对应业务策略模板 的网络策略模板， 恢复该用于原来的网络策略；
( 19 ) IPTV业务实现方法， 是基于 CDN和网络融合的新型态设备的。 由 CDN和网络融合设备的 CDN部件与用户建立应用链接， 提供服务； ( 20 ) IPTV业务实现方法基于 CDN和网络融合设备， 使得用户的网络 连接和应用层链接都在网络设备上， 更容易实现应用和网络的协同， 更好 保障 IPTV业务的服务质量。
综上所述， 本发明实施例基于融合设备来实现 IPTV业务， 通过把 CDN 内容分发功能和网络服务功能的融合， 把同一个用户的网络连接和应用层 链接都放在了网络设备上， 更好进行协同， 更容易实现 IPTV业务的服务质 量保障。 也使得网络带宽的分配， 网络策略的部署更加灵活。 同时， 更好 掌握 IPTV用户使用的业务类型， CDN资源和网络资源情况的需求统计， 为 扩容提供确实的依据， 避免 CDN和网络分离造成的能力不匹配， 不能满足 需求， 造成投资浪费等问题。
本发明实施例把网络设备和 CDN设备融合到了一起， 成为一种新型态 的设备， 并采用松耦合的融合方式， 更容易于部署和扩展。 在 CDN部件和 网络部件分别维护用户的内容状态机和网络状态机， 并增加了 CDN部件和 网络部件间的内部交互接口， 实现状态的协同， 具备了基于用户的精细化 运营和服务保障的基础。 并在此基础上， 提供了 IPTV业务的实现方法， 基 于 CDN和网络融合设备承载 IPTV应用， 使得 IPTV应用的应用层链接和网络 层连接均在融合设备上， 可实现更好的协同和配合； 部署相应的业务策略 和网络策略， 实现业务策略和网络策略的对应和联动， 可为 IPTV业务提供 高质量的服务保障。 也使得网络带宽的分配， 网络策略的部署更加灵活。 本发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权 利要求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在 内。 工业实用性
本发明实施例通过把 CDN内容分发功能和网络服务功能的融合， 把同 一个用户的网络连接和应用层链接都放在了网络设备上， 更好进行协同， 更容易实现 IPTV业务的服务质量保障。 也使得网络带宽的分配， 网络策略 的部署更加灵活。 同时， 更好掌握 IPTV用户使用的业务类型， CDN资源和 网络资源情况的需求统计， 为扩容提供确实的依据， 避免 CDN和网络分离 造成的能力不匹配， 不能满足需求， 造成投资浪费等问题。

Claims

权利要求书
1、 一种实现交互式网络电视业务的融合设备， 所述融合设备集成有内 容分发网络 CDN部件和网络部件， 且所述 CDN部件与所述网络部件间设有 内部通信接口；
所述 CDN部件， 包括：
第一查询单元， 配置为接收机顶盒 STB发起的媒体服务请求， 并在预先 配置的业务策略模板数据库中查找与所述媒体服务请求携带的业务类型相 匹配的业务策略模板；
内容服务单元， 配置为向所述网络部件发起网络支持请求， 并在接收 到所述网络部件反馈的成功响应消息后， 利用查询到的业务策略模板为所 述 STB提供媒体流服务；
所述网络部件， 包括：
第二查询单元， 配置为接收到所述网络支持请求后， 在预先配置的网 络策略模板数据库中查找与所述业务策略匹配的网络策略模板；
请求响应单元， 配置为执行查询到的网络策略模板， 并在执行成功时， 向所述 CDN部件反馈成功响应消息， 以及利用所述网络策略模板为所述 CDN部件提供网络资源支持。
2、 如权利要求 1所述的融合设备， 其中， 所述第一查询单元， 还配置 为在接收到所述媒体服务请求时， 检测当前 CDN能力是否能够接纳所述媒 体服务请求， 若是， 则查找所述业务策略模板数据库。
3、 如权利要求 2所述的融合设备， 其中，
所述第一查询单元， 还配置为在检测当前 CDN能力不能接纳所述媒体 服务请求时， 返回失败提示信息， 并记录失败原因以及请求的媒体信息； 所述请求响应单元， 还配置为在执行查询到的网络策略模板时， 若执 行不成功， 则返回失败响应消息， 并记录失败原因以及执行的网络策略模 板。
4、 如权利要求 1所述的融合设备， 其中，
所述 CDN部件，还包括： 内容加速撤销单元， 配置为在检测到所述 STB 断开媒体服务连接时， 撤销所述业务策略模板， 释放资源， 并向所述网络 部件发送策略撤销请求；
所述网络部件， 还包括： 网络加速撤销单元， 配置为在接收到所述策 略撤销请求后， 撤销所述网络策略模板。
5、 如权利要求 4所述的融合设备， 其中， 所述内容服务单元， 还配置 为在利用所述业务策略模板为所述 STB提供媒体流服务时， 向 IPTV业务系 统发送服务开始通知消息； 以及在所述内容加速撤销单元撤销所述业务策 略模板时， 向 IPTV业务系统发送服务结束通知消息。
6、 如权利要求 4或 5所述的融合设备， 其中，
所述 CDN部件， 还包括： 第一信息记录单元， 配置为在所述内容加速 撤销单元撤销所述业务策略模板后， 记录 CDN部件本次服务的媒体内容、 业务策略模板和媒体内容流量信息； 和 /或，
所述网络部件， 还包括： 第二信息记录单元， 配置为在所述网络加速 撤销单元撤销所述网络策略模板后， 记录网络部件本次服务采用的网络策 略模板、 使用的带宽和使用时长信息。
7、 如权利要求 1所述的融合设备， 其中， 所述内容服务单元， 还配置 为在利用所述业务策略模板为所述 STB提供媒体流服务时，检测本地是否緩 存有请求的媒体内容， 若有， 直接向所述 STB分发； 否则， 根据网络分层部 署， 向上级内容分发节点请求获取后， 向所述 STB分发； 其中， 所述上级内 容分发节点为独立的 CDN节点或者为融合设备中的 CDN部件。
8、 如权利要求 1所述的融合设备， 其中， 所述 CDN部件与网络部件间 为松耦合关系。
9、 一种实现交互式网络电视业务的融合系统， 包括： 交互式网络电视 IPTV业务系统、 CDN中心管理系统、 网络设备管理系统、 以及如权利要求 1 至 8任一项所述的融合设备；
所述 IPTV业务系统， 配置为接收 STB发送的用户点播请求， 获取所述 点播请求中携带的用户地址信息， 在预先配置的映射关系数据库中获取与 所述用户地址信息匹配的融合设备， 并将获取的融合设备信息通过电子节 目菜单 EPG发送至所述 STB;
所述 CDN中心管理系统和网络设备管理系统， 分别配置为对融合设备 的 CDN部件和网络部件进行维护和管理。
10、 如权利要求 9所述的融合系统， 其中， 所述 IPTV业务系统中， 映射 关系数据库的配置方式包括：
CDN部件；
所述 CDN部件接收到的所述地址池后， 结合自身的 CDN服务地址， 生 成 IPTV用户地址池与 CDN部件间的对应关系， 并将该对应关系通过所述 CDN中心管理系统同步到 IPTV业务系统；
所述 IPTV业务系统利用所述 CDN中心管理系统同步的各融合设备的 IPTV用户地址池与 CDN部件的对应关系， 生成映射关系数据库。
11、 如权利要求 9所述的融合系统， 其中， 所述融合设备中 CDN部件查 询的业务策略模板数据库和网络部件查询的网络策略模板数据库的配置方 式包括：
所述 IPTV业务系统根据各业务类型定制与各业务类型对应的业务策略 模板， 并将各业务策略模板发送至所述 CDN中心管理系统；
所述 CDN中心管理系统利用接收到的各所述业务策略模板， 生成 CDN 系统侧的业务策略模板， 并将生成的各业务策略模板分别发送至所述融合 设备的 CDN部件和所述网络设备管理系统；
所述网络设备管理系统接收到业务策略模板后， 生成支持各业务策略 模板的网络策略模板， 并将各所述网络策略模板发送至所述融合设备的网 络部件；
所述 CDN部件接收到各业务策略模板后， 生成业务策略模板数据库， 所述网络部件接收到各网络策略模板后， 生成网络策略模板。
12、 如权利要求 9所述的融合系统， 其中， 所述 IPTV业务系统， 还配置 为基于所述融合设备发送的服务开始和结束通知消息， 记录计费信息； 所 述计费信息包括： 媒体内容、 请求次数和服务时长信息。
13、 一种实现交互式网络电视业务的融合方法， 应用在如权利要求 9至 12任一项所述的系统中， 该方法包括：
交互式网络电视 IPTV业务系统接收 STB发送的用户点播请求， 获取所 述点播请求中携带的用户地址信息后， 在预先配置的映射关系数据库中获 取与所述用户地址信息匹配的融合设备， 并将获取的融合设备信息通过电 子节目菜单 EPG发送至所述 STB;
所述 STB向所述融合设备的 CDN部件发起的媒体服务请求；
所述融合设备的 CDN部件接收到媒体服务请求后， 在预先配置的业务 策略模板数据库中查找与所述媒体服务请求携带的业务类型相匹配的业务 策略模板， 并向所述融合设备的网络部件发起网络支持请求；
所述融合设备的网络部件接收到所述网络支持请求后， 在预先配置的 网络策略模板数据库中查找与所述业务策略匹配的网络策略模板， 执行查 询到的网络策略模板， 并在执行成功时， 向所述 CDN部件反馈成功响应消 息， 以及利用所述网络策略模板为所述 CDN部件提供网络资源支持；
所述融合设备的 CDN部件在接收到所述网络部件反馈的成功响应消息 后， 利用查询到的业务策略模板为所述 STB提供媒体流服务。
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