WO2023246599A1 - Procédé de distribution de ressources de service d'un fournisseur de contenu non contractuel, et système de service vidéo - Google Patents

Procédé de distribution de ressources de service d'un fournisseur de contenu non contractuel, et système de service vidéo Download PDF

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Publication number
WO2023246599A1
WO2023246599A1 PCT/CN2023/100238 CN2023100238W WO2023246599A1 WO 2023246599 A1 WO2023246599 A1 WO 2023246599A1 CN 2023100238 W CN2023100238 W CN 2023100238W WO 2023246599 A1 WO2023246599 A1 WO 2023246599A1
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Prior art keywords
multicast
service
terminal
information
management platform
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PCT/CN2023/100238
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English (en)
Chinese (zh)
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陶长标
刘群
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中兴通讯股份有限公司
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Publication of WO2023246599A1 publication Critical patent/WO2023246599A1/fr

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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
    • H04N21/21—Server components or server architectures
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • 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
    • H04N21/218—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
    • 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
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H04N21/2187—Live feed
    • 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
    • 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
    • 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
    • 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
    • H04N21/25—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
    • 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
    • H04N21/64—Addressing
    • H04N21/6402—Address allocation for clients
    • 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
    • H04N21/64—Addressing
    • H04N21/6405—Multicasting

Definitions

  • embodiments of the present application provide a service resource distribution method for non-contracted content providers, which is applied to a video service system.
  • the video service system includes a multicast service management platform and a multicast server deployed at the service layer and a deployment
  • the method includes: in response to the service request from the terminal, the CDN service node provides unicast service; the multicast service management platform hijacks all the data through DPI (Deep Packet Inspection, deep packet inspection) equipment.
  • DPI Deep Packet Inspection, deep packet inspection
  • embodiments of the present application provide a video service system, including a multicast service management platform and a multicast server deployed at the service layer, and a multicast agent deployed at the terminal, wherein: the multicast service management platform is configured This is: hijacking the service request sent by the terminal to the dispatch center through the DPI device, and performing business analysis on the unicast service provided by the CDN service node to the terminal according to the preset filtering policy to obtain service information; when the service information meets the preset Switching conditions: send multicast switching information to the multicast server so that the multicast server creates a multicast channel; obtain multicast channel information from the multicast server and send a multicast switching instruction and the multicast channel information to the terminal, so that the terminal starts the multicast agent; the multicast server is configured to create a multicast channel and send multicast channel information to the multicast service management platform; the multicast agent It is configured to perform authentication and registration with the multicast service management platform, and after successful registration, the multicast group that joins the multicast channel and the
  • embodiments of the present application provide a video service method, which is applied to multicast service management in a video service system.
  • Management platform the method includes: hijacking the service request sent by the terminal to the dispatch center through the DPI device, and performing business analysis on the service request according to the preset filtering policy to obtain service information; when the service information meets the preset switching conditions , sending multicast switching information to the multicast server, so that the multicast server creates a multicast channel; obtaining multicast channel information from the multicast server and sending a multicast switching instruction and the multicast channel information to the multicast server. terminal, so that the terminal starts the multicast agent.
  • embodiments of the present application provide a computer-readable storage medium that stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the steps described in the third embodiment. video service method.
  • Figure 1 is an architectural block diagram of a video service system provided by an embodiment of the present application
  • Figure 2 is a flow chart of a service resource distribution method for a non-contracted content provider provided in Embodiment 1 of the present application;
  • Figure 4 is a flow chart of a service resource distribution method for a non-contracted content provider provided in Embodiment 3 of the present application;
  • Figure 5 is a flow chart of a service resource distribution method for a non-contracted content provider provided in Embodiment 4 of the present application;
  • Figure 6 is a flow chart of a service resource distribution method for a non-contracted content provider provided in Embodiment 5 of the present application;
  • Figure 7 is a flow chart of a service resource distribution method for a non-contracted content provider provided in Embodiment 6 of the present application;
  • Figure 8 is a flow chart of single-multicast switching of non-contracted CP live broadcast services provided by the embodiment of the present application.
  • Figure 9 is a flow chart of multicast distribution of non-subscription CP provided by the embodiment of this application.
  • Figure 10 is a flow chart of a video service method provided by an embodiment of the present application.
  • Figure 11 is a flow chart of a video service method provided by another embodiment of the present application.
  • Figure 12 is a flow chart of a video service method provided by yet another embodiment of the present application.
  • IPTV live multicast saves a lot of CDN resources and bandwidth, while in OTT live broadcast services, services are currently provided in the form of unicast. Therefore, operators hope to combine OTT live broadcast with new multicast technology to provide OTT multicast capabilities to cope with the high concurrency and large traffic requirements of OTT live broadcast, especially to cope with the traffic tide of various real-time live broadcasts and Internet celebrity live broadcasts. is very effective
  • OTT services have a different characteristic: in addition to traditional CPs (Content Provider content providers), OTT content providers also have a large number of Internet CPs. These Internet CPs are basically useless to operators. They are all non-contracted content provider users. What they need is the operator’s content distribution channel, which can be provided at any time. Ultimately the audience provides the service. For non-subscriber users, operators cannot pre-allocate service resources and configure scheduling strategies to such users according to traditional video service methods.
  • the embodiments of this application provide a service resource distribution method and video service system for non-contracted content providers, which can reduce the traffic tidal impact effect of operators, reduce operation and maintenance costs, and provide differentiated business services for different users.
  • FIG. 1 is an architectural block diagram of a video service system provided by an embodiment of the present application.
  • the video service system mainly includes the multicast service system deployed at the service layer, the BIER network system deployed at the network layer, and the multicast agent deployed at the terminal.
  • the multicast service system includes DPI equipment, multicast service management platform and multicast server.
  • the entire network deploys one set on the system side to centrally manage multicast services;
  • the Bier network system includes BFIR (Bit-Forward Ingress Router, ingress router), BFER (Bit-Forward Egress Router, egress router) and BIER controller. :
  • Multicast service management platform main functions include configuring and managing preset switching conditions of unicast switching groups; managing multicast agents, including login, heartbeat, etc.; maintaining multicast channel lists; sending multicasts to multicast servers and multicast agents Switching instructions; interact with the BIER controller to manage multicast channels, BFER, BFIR correspondence, etc.;
  • one embodiment of the present application provides a service resource distribution method for a non-contracted content provider, which is applied to the video service system shown in Figure 1.
  • the service resource distribution method may include but is not limited to steps S210 to Step S250, wherein:
  • Step S210 In response to the service request from the terminal, the CDN service node provides unicast service
  • Step S220 The multicast service management platform hijacks the service request through the DPI device, and performs business analysis on the service request according to the preset filtering policy to obtain service information;
  • Step S240 The multicast service management platform obtains multicast channel information from the multicast server and sends a multicast switching instruction and the multicast channel information to the terminal, so that the terminal starts the multicast agent. ;
  • Multicast groups provide centralized multicast capabilities, which can reduce the operator's traffic tidal impact effect, reduce operation and maintenance costs, provide differentiated business services for different users, and can also save the operating costs of high-traffic users and improve user satisfaction. Spend.
  • step S210 in response to the service request from the terminal, the CDN service node provides unicast service, which may include but is not limited to steps S310 to step S320:
  • Step S320 The CDN service node provides unicast service.
  • the hot-active processing between the multicast agent and the multicast service management platform is maintained through heartbeat messages.
  • the above service resource distribution method may also include steps S410 to S430:
  • the multicast agent after the multicast agent joins the multicast group, it will report the BFER information of the terminal to the multicast service management platform.
  • the multicast service management platform will synchronize the BFER information to the BIER controller and tell the BIER controller that there is a new terminal. Users need to join the distribution link of the BIER network to update the distribution link of the BIER network and update the mapping relationship between multicast channels, BFIR, and BFER, so that terminal users who newly join the BIER network can obtain multicast media streams normally.
  • Step S520 The BFIR updates and distributes the BitString string, floods it to all network nodes of the BIER network, and updates the distribution link.
  • Step S610 The multicast service management platform synchronizes the mapping relationship to the multicast server
  • Step S630 The BFIR distributes the multicast media stream to the corresponding BFER in the BIER network according to the distribution link;
  • Step S640 After receiving the multicast service startup notification, the multicast agent obtains the multicast media stream from the BFER.
  • the above service resource distribution method may also include steps S710 to S720:
  • Step S720 When the frames of the multicast media stream are completely synchronized with the frames of the unicast media stream, the multicast agent sends a stop unicast notification to the terminal so that the terminal stops obtaining data from the CDN service node. Unicast media streaming.
  • the above service resource distribution method may also include:
  • the CDN service node pushes the unicast media stream to the multicast server.
  • the service information includes at least one of the number of users, bandwidth occupancy, and bandwidth change trend;
  • the preset switching condition correspondingly includes at least one of the following:
  • the number of users is greater than the first preset value
  • the bandwidth usage is greater than the second preset value
  • the bandwidth occupancy rate continues to increase within a preset time period.
  • the multicast service management platform is set to: hijack the service request sent by the terminal to the dispatch center through the DPI device, and perform business analysis on the unicast service provided by the CDN service node to the terminal according to the preset filtering policy to obtain service information ;
  • the service information meets the preset switching conditions, send multicast switching information to the multicast server so that the multicast server creates a multicast channel; obtain multicast channel information from the multicast server and send the multicast Broadcast the switching instruction and the multicast channel information to the terminal, so that the terminal starts the multicast agent;
  • the multicast server is configured to create a multicast channel and send multicast channel information to the multicast service management platform;
  • the multicast agent is configured to perform authentication and registration with the multicast service management platform. After successful registration, the multicast group that joins the multicast channel and the multicast service management platform maintain hot-alive processing through heartbeat messages. .
  • Figure 8 is a flow chart of single-multicast switching of non-contracted CP live broadcast services provided by an embodiment of the present application, including the following steps:
  • S800 Configure unicast and multicast switching strategies uniformly on the multicast service management platform; it can be understood that the switching strategy includes preset switching conditions, and the preset switching conditions may be that the number of users is greater than the first preset value and/or The bandwidth usage is greater than the second preset value;
  • S801 After the user successfully logs in to the terminal and authenticates, the user initiates a service request, such as a live broadcast viewing request;
  • S802 The terminal's service request is sent to the dispatch center, such as GSLB (Global Server Load Balance, global service load balancing);
  • GSLB Global Server Load Balance, global service load balancing
  • S803 The dispatch center dispatches the service request to the CDN service node according to the load balancing dispatch policy
  • S804-1 The terminal that initiates the service request from the CDN service node first provides the service in unicast mode
  • the multicast service management platform sends multicast switching information to the multicast server
  • S812 The multicast agent performs authentication and registration with the multicast service management platform to ensure its legitimacy
  • Figure 9 is a multicast distribution flow chart of a non-signed CP, including the following steps:
  • the multicast agent joins the multicast group of the multicast channel after receiving the multicast switching instruction from the multicast service management platform;
  • S903 The multicast agent reports the BFER information of the terminal to the multicast service management platform;
  • the multicast service management platform synchronizes BFER information to the BIER controller and tells the BIER network that there are new terminals that need to be added to the distribution link of the BIER network;
  • the BIER controller allocates the BFIR entry address according to the BIER network conditions and policies and returns it to the multicast service management platform;
  • the BIER controller synchronizes the BFER information to the corresponding BFIR
  • S907-1 BFIR updates and distributes the BS string, floods it to all network nodes in the BIER network, and refreshes the distribution link;
  • the multicast service management platform synchronizes the mapping relationship to the multicast server
  • the multicast server pulls the unicast media stream to the CDN service node, or the CDN service node actively pushes the unicast media stream to the multicast server;
  • the multicast server converts the unicast media stream into a multicast media stream
  • the multicast server sends the multicast media stream to the corresponding BFIR;
  • the multicast server sends a multicast service startup notification to the multicast service management platform;
  • the multicast service management platform sends a multicast service startup notification to the multicast agent
  • S912 BFIR distributes the multicast media stream in the BIER network, and the BIER network distributes it to the corresponding BFER according to the policy;
  • the multicast agent After receiving the multicast service startup notification, the multicast agent obtains the multicast media stream from the BFER;
  • the multicast agent ensures the synchronization of the frames of the original unicast media stream and the frames of the subsequent multicast media stream through unicast compensation and other technologies to prevent problems such as frame loss and black screen when users watch;
  • S916 The terminal stops pulling unicast streams from the CDN service node, stops the unicast service, and switches to the multicast service;
  • S917 The terminal requests multicast service through the multicast proxy
  • the multicast agent converts the multicast media stream into a unicast media stream
  • S919 The multicast agent returns the media stream to the terminal for decoding and playback.
  • BFIR Bit Index Explicit Replication
  • Bit Index Explicit Replication Bit Index Explicit Replication
  • the multicast receiver BFER Bit-Forward Egress Router, egress router
  • the multicast flow forwarding status information Group, Ingress, Egress
  • the BIER link status library are generated by the BIER extension flooding of the IGP (ISIS/OSPF) protocol.
  • the embodiments of this application provide video services through centralized multicast in a non-subscription scenario based on Bier technology.
  • the server performs centralized unified management of the timing and strategy of multicast distribution:
  • the multicast service system When the preset switching conditions for single-multicast switching are reached, the multicast service system notifies the client to perform single-multicast streaming switching on the one hand, and interacts with the BIER controller on the other hand to obtain the BFER information corresponding to the user. Synchronized to the BIER controller, the BIER controller notifies the BFIR to update the BS (BitString) series and refresh the distribution link information, and the multicast server converts the unicast media stream into a multicast media stream and pushes it to the BFIR.
  • BFIR After receiving the multicast media stream, BFIR forwards it in the BIER network according to the BS string value;
  • the terminal joins the multicast group of the multicast channel of this CP, pulls the multicast media stream from the BFER, and converts it into a unicast media stream through the multicast agent, and the terminal decodes and plays it.
  • the service resource distribution method provided by the embodiment of this application can be applied to new Internet high-traffic live broadcast services in non-contracted CP scenarios, such as Internet celebrity live broadcasts, conference live broadcasts, product live broadcasts, etc.
  • non-contracted live broadcast CP scenarios such as Internet celebrity live broadcasts, conference live broadcasts, product live broadcasts, etc.
  • it will have a very large impact on the traffic of the operator's network, and the tidal phenomenon is very obvious.
  • existing unicast distribution is optimized to a combination of unicast and multicast.
  • the video service system Based on the real-time situation of user volume, the video service system automatically decides whether to use unicast or multicast.
  • multicast distribution based on Bier technology can completely decouple applications and transmission, achieving true multicast forwarding at the network layer without paying attention to its business characteristics, further reducing the cost of multicast maintenance and management, and improving multicast distribution.
  • Efficiency so the solution of the embodiment of this application provides centralized multicast capabilities in non-contracted CP scenarios, can obtain very efficient and stable multicast distribution performance, and ensures that large operators can introduce Internet high-traffic services, effectively reducing operation and maintenance costs.
  • broaden the operator's video business scope provide differentiated business services for different users, increase new revenue, and at the same time save the operating costs of high-traffic users and improve user satisfaction.
  • Step S1010 Hijack the service request sent by the terminal to the dispatch center through the DPI device, and conduct business analysis on the service request according to the preset filtering policy to obtain service information;
  • Step S1020 When the service information meets the preset switching conditions, send the multicast switching information to the multicast server so that the multicast server creates a multicast channel;
  • Step S1030 Obtain multicast channel information from the multicast server and send a multicast switching instruction and the multicast channel information to the terminal, so that the terminal starts the multicast agent.
  • Step S1110 Obtain the BFER information of the terminal reported by the multicast agent and synchronize it to the BIER controller, so that the BIER controller updates the distribution link of the BIER network according to the BFER information;
  • Step S1210 Synchronize the mapping relationship to the multicast server, so that the multicast server obtains the unicast media stream from the CDN service node and converts the unicast media stream into a multicast media stream;
  • Embodiments of the present application also provide a computer-readable storage medium that stores computer-executable instructions, and the computer-executable instructions are used to cause the computer to execute the video service method described in the above embodiments, for example
  • the method steps S1010 to S1030 in FIG. 10 , the method steps S1110 to S1120 in FIG. 11 , and the method steps S1210 to S1220 in FIG. 12 are executed.
  • Embodiments of the present application include a service resource distribution method, a video service system, a video service method and a computer-readable storage medium of a non-contracted content provider.
  • the service request of the terminal is analyzed, and whether the switching condition is preset is determined based on the obtained service information. If it is met, the multicast server creates a multicast channel and notifies the terminal to start the multicast agent. , the multicast agent joins the multicast group of the multicast channel to provide centralized multicast capabilities, which can reduce the operator's traffic tidal impact effect, reduce operation and maintenance costs, provide differentiated business services for different users, and can also save large traffic operating costs for users and improve user satisfaction.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente demande divulgue un procédé de distribution de ressources de service d'un fournisseur de contenu non contractuel, ainsi qu'un système de service vidéo. Le système de service vidéo comprend une plateforme de gestion de services de multidiffusion et un serveur de multidiffusion qui sont déployés sur une couche de service, ainsi qu'un agent de multidiffusion déployé sur un terminal. Le procédé comprend les étapes suivantes : en réponse à une demande de service émanant du terminal, un nœud de service CDN fournit un service de monodiffusion (S210) ; la plateforme de gestion de services de multidiffusion intercepte la demande de service au moyen d'un dispositif DPI, puis effectue une analyse de service sur la demande de service selon une stratégie de filtrage prédéfinie afin d'obtenir des informations de service (S220) ; lorsque les informations de service satisfont une condition de commutation prédéfinie, la plateforme de gestion de services de multidiffusion envoie des informations de commutation de multidiffusion au serveur de multidiffusion de façon à ce que le serveur de multidiffusion crée un canal de multidiffusion (S230) ; la plateforme de gestion de services de multidiffusion obtient des informations de canal de multidiffusion et envoie une instruction de commutation de multidiffusion et les informations de canal de multidiffusion au terminal de façon à ce que le terminal démarre l'agent de multidiffusion (S240) ; et l'agent de multidiffusion rejoint un groupe de multidiffusion du canal de multidiffusion (S250).
PCT/CN2023/100238 2022-06-22 2023-06-14 Procédé de distribution de ressources de service d'un fournisseur de contenu non contractuel, et système de service vidéo WO2023246599A1 (fr)

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CN202210712657.5A CN117319689A (zh) 2022-06-22 2022-06-22 非签约内容提供商的服务资源分发方法和视频服务系统
CN202210712657.5 2022-06-22

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