WO2010075813A1 - Procédé, système et serveur pour transmettre des données multimédia en continu - Google Patents

Procédé, système et serveur pour transmettre des données multimédia en continu Download PDF

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Publication number
WO2010075813A1
WO2010075813A1 PCT/CN2010/000013 CN2010000013W WO2010075813A1 WO 2010075813 A1 WO2010075813 A1 WO 2010075813A1 CN 2010000013 W CN2010000013 W CN 2010000013W WO 2010075813 A1 WO2010075813 A1 WO 2010075813A1
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WO
WIPO (PCT)
Prior art keywords
data
streaming media
node
layer data
super
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2010/000013
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English (en)
Chinese (zh)
Inventor
朱红儒
齐旻鹏
来学嘉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
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China Mobile Communications Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Mobile Communications Corp filed Critical China Mobile Communications Corp
Publication of WO2010075813A1 publication Critical patent/WO2010075813A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/104Peer-to-peer [P2P] networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60Network streaming of media packets
    • H04L65/61Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/612Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80Responding to QoS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234327Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network 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 
    • H04N21/63Control 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
    • H04N21/631Multimode 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

Definitions

  • the present invention relates to a wireless IP/Internet service environment WiiSE network, and in particular, to a streaming media data transmission method, system and server. Background technique
  • WiiSE Wireless IP/Internet Service Environment
  • the network is currently a new conceptual telecommunication network. It is an all-IP distributed network.
  • the WiiSE network has a flat all-IP network structure and intelligence.
  • FIG. 1 is a schematic diagram of a currently proposed WiiSE core network.
  • the WiiSE core network is a distributed network, including a plurality of trusted nodes (also called super nodes, nodes deployed by the operators themselves) and other untrusted nodes respectively. It is a node of other heterogeneous networks. It consists of several P2P cascading networks (Mesh P2P), and each super node is a subnet representation of Mesh P2P. The super node and other untrusted nodes can be distributed in P2P mode. The transmission of business data.
  • Embodiments of the present invention provide a streaming media data transmission method, system, and server for solving streaming media transmission in a WiiSE network.
  • a streaming media data transmission method provided by an embodiment of the present invention is applied to a wireless IP/Internet service environment WiiSE network, including:
  • the layering the streaming media data includes:
  • the streaming media content data in the streaming media data into the layered media content data and the basic layer streaming media content data according to the quality of service QoS or the segmentation method of the streaming media segment; and the copyright information and the session key
  • the base layer streaming media content data is determined as the base layer data
  • the enhanced layer streaming media content data is determined to increase the number of layers.
  • the super nodes are transmitted to the user terminal according to the transmission mode of the client/server, and the method includes: the super nodes use the route recorded in the secure routing table according to the stored security routing table and the security user list.
  • the base layer data is sent to the user terminal in the secure user list.
  • the super nodes and the untrusted nodes are shared and transmitted to the user terminal according to the P2P transmission mode, including:
  • the super node or the untrusted node obtains the layer data and caches from other super nodes and/or other untrusted nodes in the core network by using P2P transmission;
  • the super nodes or untrusted nodes transmit the cached enhancement layer data to the user terminal.
  • An embodiment of the present invention further provides a streaming media data transmission system, including: a streaming media server, a super node, and an untrusted node;
  • the streaming media server is configured to layer the streaming media data into basic layer data and improve layer data; and transmit the base layer data to each super node; and transmit the enhanced layer data to each super node or not Letter node
  • the super node is configured to transmit the basic layer data to a user terminal according to a client/server transmission manner; and share the enhanced layer data and transmit with other super nodes and the untrusted node according to a P2P transmission manner.
  • the untrusted node is configured to share the enhanced layer data with other untrusted nodes and the super node according to a P2P transmission manner and transmit the data to the user terminal.
  • the streaming media server is further configured to extract copyright information and a session key included in the streaming media data, and divide the streaming media content data in the streaming media data according to a quality of service QoS or a segmentation of a streaming media segment.
  • QoS quality of service
  • the streaming media server is further configured to extract copyright information and a session key included in the streaming media data, and divide the streaming media content data in the streaming media data according to a quality of service QoS or a segmentation of a streaming media segment.
  • the super node is further configured to send the basic layer data to the user terminal in the secure user list by using a route that is recorded in the secure routing table according to the stored secure routing table and the security user list.
  • the super node is further configured to obtain the enhanced layer data from the other super nodes and/or the untrusted node in the core network by using the P2P transmission manner, and cache the cached layer data; and transmit the buffered enhanced layer data to the user terminal;
  • the untrusted node is further configured to obtain the enhanced layer data and cache from the other untrusted node and/or the super node by using the P2P transmission manner; and transmit the buffered enhanced layer data to the user terminal.
  • the embodiment of the invention further provides a streaming media server, including:
  • a layering module configured to layer the streaming media data into basic layer data and improve layer data
  • a transmission module configured to transmit the basic layer data to each super node in the core network according to a client/server transmission manner And to the user terminal; and sharing the enhanced layer data through the P2P transmission mode between the super nodes and/or the untrusted nodes in the core network and transmitting to the user terminal.
  • the layering module further includes:
  • a storage submodule configured to store streaming media data
  • An extraction submodule configured to extract copyright information and a session key included in the streaming media data; and a sub-module, configured to: stream media content data in the streaming media data according to a service shield quantity Qos or a streaming media Segmentation mode is divided into improving layered media content data and basic layer streaming media content data;
  • the streaming media data transmission method, system and server provided by the embodiments of the present invention perform layered processing on the streaming media data, and transmit the divided basic layer data to the user terminal according to the client/server manner through the super nodes in the core network.
  • the layer data is shared and transmitted to the client according to the P2P mode between the super nodes and the untrusted nodes in the core network.
  • the streaming media data transmission method, system and server provided by the embodiments of the present invention use the existing super nodes in the core network to implement the function of similar content distribution network end services, which not only reduces the delay of transmitting the base layer data transmission source to the end, but also ensures The security of the basic layer data transmission is reliable, and the distribution of the basic layer data can be realized by eliminating the need to deploy a large number of Content Delivery Network (CDN) servers, which has small changes to the network and is low in implementation cost.
  • CDN Content Delivery Network
  • the layer data is shared by each super node and the untrusted node according to the P2P manner, and the advantage of P2P for data transmission is fully utilized, thereby effectively balancing the network load and improving the network.
  • the network is more efficient, and it also provides users with a higher shield and faster streaming data playback experience.
  • 1 is a schematic structural diagram of an existing WiiSE core network
  • FIG. 2 is a flowchart of a method for transmitting streaming media data according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a network connection of a streaming media data transmission method according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a streaming media data transmission system according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a streaming media server according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a layering module in a streaming media server according to an embodiment of the present invention. detailed description
  • Step S201 The streaming media server layeres the streaming media data into basic layer data and enhanced layer data.
  • the streaming media server performs hierarchical processing on the original streaming media data, and the original streaming media data includes sensitive information and streaming media content data.
  • the original streaming media data includes sensitive information and streaming media content data.
  • MDC multiple description coding
  • the specific layering method is as follows:
  • the streaming media server first extracts the original streaming media data containing sensitive information (copyright information and session keys, etc.);
  • the streaming media server then divides the streaming media content data in the original streaming media data into higher layered media content data and basic layer streaming media content data according to the quality of service (QoS) or the segmentation of the streaming media segment.
  • QoS quality of service
  • the segmentation of the streaming media segment may be, but is not limited to, dividing the streaming media segment into a preview segment and a normal segment.
  • the preview segment may be a content segment selected by the streaming media provider from the original streaming media data for the user to preview the movie. And for ordinary fragments.
  • the streaming media content data with better visual quality is used as the enhanced streaming media content data, and the streaming media content data with lower visual quality is used as the basic layer streaming media content data; or, the streaming content of the common segment is The data is used to improve the streaming media content data, and the streaming media content data of the preview segment is used as the base layer streaming media content data.
  • the streaming media server determines the extracted copyright information, the session key, and the divided basic layer media content data as the base layer data; and determines the divided enhanced layer stream media content data as the higher layer data.
  • Step S202 The streaming media server transmits the basic layer data to each super node in the core network, and the super node transmits the data to the user terminal according to the transmission mode of the client/server.
  • a number of trusted nodes are deployed in the WiiSE core network, and for each super node, it receives streaming media transmission. After the basic layer data, it can be transmitted to the user terminal according to the existing client/server transmission method.
  • the super node in the embodiment of the present invention has a function similar to the end server in the CDN, that is, the streaming media can distribute the data of the basic layer through each super node deployed in the core network of the WiiSE.
  • the super node closest to the user end can not only reduce the source-to-end delay, but also improve the reliability of the transmission of the basic layer data (including sensitive information such as copyright information and session key) because the super nodes are trusted. .
  • the function of the existing super node can be improved accordingly, and the implementation is convenient and the cost is low.
  • the several routes recorded in the secure routing table ensure the authenticity of the user identity of the basic layer data transmission on the path of the basic layer data transmission.
  • the super node sends the base layer data to the user terminal in the secure user list through the route described in the secure routing table.
  • the supernode does not transmit any base layer data to it.
  • the supernode also needs to continuously update the contents of the maintained secure routing table and the secure user list based on the results of authentication and authentication.
  • Step S203 The streaming media server transmits the enhanced layer data to each super node and/or the untrusted node in the core network, and the super node and the untrusted node share and transmit to the user terminal according to the P2P transmission manner.
  • the streaming server may choose to transmit the enhanced layer data to the super nodes and/or untrusted nodes in the WiiSE core network.
  • each super node in the WiiSE core network and the untrusted node form a P2P mesh network, and the super node and the untrusted node can use P2P transmission mode for data sharing.
  • the super node or the untrusted node may initiate a request for obtaining the layer data to the other super node or the untrusted node, and obtain the corresponding layer data by using the P2P method, and then return the data to the user terminal, for example, when the user terminal is to the super node or not
  • the requesting node initiates the request for obtaining the streaming media data, and when the corresponding streaming media data is cached in the super node or the untrusted node, the super node or the untrusted node directly returns the cached layer of the cache to the user terminal;
  • the super node or the untrusted node may be other super nodes or untrusted.
  • the node initiates the request for obtaining the
  • the streaming server sends the number of layers to the WiiSE core network, even if no user terminal sends a request for obtaining streaming media data to each super node or untrusted node in the WiiSE core network.
  • the super-nodes and the untrusted nodes in the WiiSE core network also perform P2P data transmission with each other, and cache the obtained enhanced layer data.
  • the cached The layer data is updated back to the user terminal.
  • the streaming media server adopts the method of sharing the layer data and transmitting the data to the user by using the P2P transmission mode between the super nodes in the WiiSE core network and the untrusted nodes, fully utilizing the advantages of the P2P transmission mode, and effectively balancing the network.
  • the load increases the efficiency of the network, and also provides users with higher quality and faster streaming data playback experience.
  • Steps S102 and S103 in the streaming media data transmission method provided by the embodiment of the present invention are independent of each other, and there is no strict chronological order, and the steps are numbered only for the purpose of distinguishing.
  • FIG. 3 is a schematic diagram of a network connection of a streaming media data transmission method according to an embodiment of the present invention.
  • the solid line portion represents the base layer data
  • the dotted line portion represents the enhancement layer data.
  • the embodiment of the present invention further provides a streaming media data transmission system, as shown in FIG. 4, including: a streaming media server 401, a super node 402, and an untrusted node 403; among them:
  • the streaming media server 401 is configured to layer the streaming media data into basic layer data and improve Layer data; and transferring base layer data to each super node; and transmitting the enhancement layer data to each super node or untrusted node;
  • the super node 402 is configured to transmit the basic layer data to the user terminal according to the client/server transmission manner; and share the enhanced layer data with the other super nodes and the untrusted node according to the P2P transmission manner and transmit the data to the user terminal;
  • the untrusted node 403 is configured to share the enhanced layer data with other untrusted nodes and super nodes according to the P2P transmission mode and transmit the data to the user terminal.
  • the streaming media server 401 in the streaming media data transmission system provided by the embodiment of the present invention is further configured to extract the copyright information and the session key included in the streaming media data; and the streaming media content data in the streaming media data, according to the service shield quantity Qos High or low or streaming media segmentation (such as, but not limited to, dividing a streaming segment into a preview segment and a normal segment) into improved layered media content data and base layer streaming media content data; and copyright information, session key And the base layer streaming media content data is determined as the base layer data, and the layered stream media content data is determined to be the enhancement layer data.
  • the service shield quantity Qos High or low or streaming media segmentation such as, but not limited to, dividing a streaming segment into a preview segment and a normal segment
  • the base layer streaming media content data is determined as the base layer data
  • the layered stream media content data is determined to be the enhancement layer data.
  • the super node 402 in the streaming media data transmission system provided by the embodiment of the present invention is further configured to send the basic layer data to the security user by using the route recorded in the secure routing table according to the stored secure routing table and the security user list. User terminal in the list.
  • the super node 402 in the streaming media data transmission system provided by the embodiment of the present invention is also used to obtain the enhanced layer data and cache from other super nodes and/or untrusted nodes in the core network by using the P2P transmission manner;
  • the layer data is transmitted to the user terminal.
  • the untrusted node 403 in the streaming media data transmission system provided by the embodiment of the present invention is also used to obtain the enhanced layer data and cache from other untrusted nodes and/or super nodes by using P2P transmission; Transfer to the user terminal.
  • the embodiment of the present invention further provides a streaming media server, as shown in FIG. 5, including: a layering module 501 and a transmission module 502;
  • a layering module 501 configured to layer the streaming media data into basic layer data and improve layer data
  • the transmission module 502 is configured to: pass the basic layer data to each super node in the core network according to the client/ The transmission mode of the server is transmitted to the user terminal; and the enhancement layer data is shared and transmitted to the user terminal according to the P2P transmission mode between the super nodes and/or the untrusted nodes in the core network.
  • the layering module in the streaming media server provided by the embodiment of the present invention, as shown in FIG. 6, may further include: a storage submodule 601, an extracting submodule 602, a dividing submodule 603, and a determining submodule 604;
  • a storage submodule 601 configured to store streaming media data
  • the extraction sub-module 602 is configured to extract the copyright information and the session key included in the streaming media data.
  • the dividing sub-module 603 is configured to divide the streaming media content data in the streaming media data according to the quality of service QoS or the segmentation of the streaming media segment. Divided into improving layered media content data and basic layer streaming media content data;
  • the determining sub-module 604 determines the copyright information, the session key, and the base layer streaming media content data as the base layer data; and determines the enhanced layered media content data as the enhancement layer data.
  • the streaming media data transmission method, system and server provided by the embodiments of the present invention perform layered processing on the streaming media data, and transmit the divided basic layer data to the user terminal according to the client/server manner through the super nodes in the core network.
  • the layer data is shared and transmitted to the client according to the P2P mode between the super nodes and the untrusted nodes in the core network.
  • the streaming media data transmission method, system and server provided by the embodiments of the present invention use the existing super nodes in the core network to implement the function of similar content distribution network end services, which not only reduces the delay of transmitting the base layer data transmission source to the end, but also ensures The security of the basic layer data transmission is reliable, and the distribution of the basic layer data can be realized because a large number of CDN servers are no longer needed to be deployed, and the network modification is small, and the implementation is convenient and low in cost.
  • the layer data is shared by the super nodes and the untrusted nodes according to the P2P manner, and the advantages of P2P for data transmission are fully utilized, thereby effectively balancing the network load and improving the network.
  • the network is more efficient, and it also provides users with higher quality and faster streaming data playback experience.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

L'invention concerne un procédé, un système et un serveur pour transmettre des données multimédia en continu. Le procédé de la présente invention comprend les étapes suivantes : les données multimédia en continu sont délaminées en des données de couche basique et des données de couche évoluée; les données de couche basique sont transmises à chaque super nœud dans un réseau d'infrastructure, et sont transmises à un terminal d'utilisateur par chaque super nœud selon un mode de transmission client/serveur; les données de couche évoluée sont transmises à chaque super nœud et/ou un nœud incroyable dans le réseau d'infrastructure, et sont partagées selon un mode de transmission poste à poste (P2P) entre le super nœud et le nœud incroyable et sont transmises au terminal d'utilisateur. La présente invention permet à la fonction d'être similaire au service d'extrémité de réseau d'acheminement de contenus par l'utilisation des supers nœuds existants dans le réseau d'infrastructure, et garantit la sécurité et la fiabilité de transmission des données de couche basique. De plus, étant donné que l'acheminement des données de couche basique peut être réalisé sans nécessiter d'agencer un grand nombre de serveurs de réseau d'acheminement de contenus (CDN), le changement du réseau est limité, la mise en œuvre est commode et le coût est faible.
PCT/CN2010/000013 2009-01-04 2010-01-04 Procédé, système et serveur pour transmettre des données multimédia en continu Ceased WO2010075813A1 (fr)

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CN200910076452.7 2009-01-04
CN200910076452.7A CN101771721B (zh) 2009-01-04 2009-01-04 一种流媒体数据传输方法、系统及服务器

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CN101771721A (zh) 2010-07-07

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