WO2013178010A1 - Procédé, dispositif et système de distribution de contenu multimédia - Google Patents

Procédé, dispositif et système de distribution de contenu multimédia Download PDF

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Publication number
WO2013178010A1
WO2013178010A1 PCT/CN2013/075327 CN2013075327W WO2013178010A1 WO 2013178010 A1 WO2013178010 A1 WO 2013178010A1 CN 2013075327 W CN2013075327 W CN 2013075327W WO 2013178010 A1 WO2013178010 A1 WO 2013178010A1
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WO
WIPO (PCT)
Prior art keywords
media content
content
media
terminal
service node
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Application number
PCT/CN2013/075327
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English (en)
Chinese (zh)
Inventor
倪伟
毕娅娜
陈喆
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中国移动通信集团公司
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Application filed by 中国移动通信集团公司 filed Critical 中国移动通信集团公司
Publication of WO2013178010A1 publication Critical patent/WO2013178010A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/2866—Architectures; Arrangements
    • H04L67/30—Profiles
    • H04L67/303—Terminal profiles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/565—Conversion or adaptation of application format or content

Definitions

  • multimedia services have become the main traffic component of the Internet.
  • video-on-demand websites and video UGC websites account for more than 80% of traffic, but due to the huge amount of video content data, almost all Internet video websites are self-built or
  • the subscription method is distributed by the content distribution system CDN as its basic transmission network, and the video content is distributed to the edge of the network, so that the terminal can quickly access the on-demand or live content provided by the website.
  • the distribution of the above multimedia content generally adopts the following method:
  • Each original media content for example, video content
  • the content provider (CP) is encoded by the business system multiple times to generate a broadcast suitable for different terminal types.
  • the multimedia content of different resolutions and bit rates is transmitted by the service system to the content distribution network CDN content center, which is transmitted by the CDN content center to the network edge.
  • Each service node needs to actively download multimedia content of different resolutions or bitrates from each service node according to its own terminal type and demand, and then play it after downloading.
  • the business system first converts the original media content into a plurality of different versions of the media content, and then sends the content to the CDN, which brings great computing pressure and storage pressure to the business system. It also increases the amount of media data processing when injecting into the CDN content center, greatly reducing operational efficiency. Furthermore, because some terminals do not have sufficient comprehensive support for media content formats, they cannot play some media content on the Internet, for example, the widely used Fiash (*, flv) format on the Internet, including Youku, Potato, Cool 6, Youtube, etc.
  • Embodiments of the present invention provide a multimedia content distribution method, device, and system, which are used to solve the problems of large computing pressure, high storage pressure, and low operational efficiency of an existing service system, and multimedia content and terminal type sent by a service node. Mismatch causes problems that cannot be played and watched properly.
  • a multimedia content distribution method includes: a service node receiving an access request sent by a terminal to request to acquire a first media content; the service node identifying a type of the terminal, and according to Identifying the type, from the locally saved media content, matching the second media content that is consistent with the first media content and the media format matches the type of the terminal, and returns the same to the terminal;
  • the media content saved locally by the node is obtained by the service node according to the media content configuration information, and the original media content sent by the content distribution network CDN content center is multi-format converted, or the CDN content center is configured according to the media content. , the original media content is multi-format converted and then forwarded to the service node.
  • a service node device includes: a receiving module, configured to receive a first media content access request sent by the terminal; an identifying module, configured to identify a type of the terminal; and a conversion module, configured to use the media
  • the content configuration information is used to perform multi-format conversion on the original media content sent by the content distribution network CDN content center to generate the media content
  • the storage block is configured to store the media content converted by the conversion module, Or the CDN content center, according to the media content configuration information, the media content that is forwarded by the multi-format conversion after the original media content is forwarded
  • the matching module is configured to use the type of the terminal that is identified according to the identification module.
  • a CDN content center device includes: a conversion module, configured to perform multi-format conversion on each original media content according to media content configuration information, to generate each media content; and send a module, Each media content is sent to a service node.
  • a multimedia content distribution system includes: the at least one content distribution network CDN content center, and a plurality of service nodes connected to each of the CDN content centers, the CDN content a center, configured to perform multi-format conversion on each original media content according to the media content configuration information, generate each media content, and forward the content to the service node; the service node, configured to forward the CDN content center
  • Each media content is stored locally or used to perform multi-style conversion on the original media content forwarded by the CDN content center according to the media content configuration information, to generate the media content and store it locally;
  • receiving an access request sent by the terminal to obtain the first media content, identifying the type of the terminal, and matching the media content from the locally saved media content according to the identified type of the terminal.
  • a second medium that is consistent with the first media content and whose media format matches the type of the terminal And returning to said receiving terminal.
  • the beneficial effects of the embodiments of the present invention include: a multimedia content distribution method, a service node, a CDN content center device, and a system provided by the embodiment of the present invention, when the service node receives an access request sent by the terminal to obtain the first media content, the service The node first identifies the type of the terminal, and according to the identified type, matches the second media content that matches the media content with the first media content and the media format matches the type of the terminal from the locally saved media content. And returning to the terminal; the locally saved media content is obtained by the service node converting the original media content sent by the CDN content center according to the media content configuration information, or the CDN content center is configured according to the media content.
  • the original media content is converted into multiple formats by the CDN content center or the service node, and the service system does not need to process the original media content, and only the original media content is sent to the original media content.
  • the CDN content center can be used, which greatly reduces the computing pressure and storage pressure of the business system, and improves the operational efficiency of the business system.
  • the service node may identify the type of the terminal, and return the second media content that matches the first media content to the terminal, so as to avoid that the multimedia content sent by the service node does not match the terminal type, and the normal media cannot be played normally. And watching the issue.
  • FIG. 1 is a flowchart of a multimedia content distribution method according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a CDN content center being sent to a service node in an active manner according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a CD content center being sent to a service node in a passive manner according to an embodiment of the present invention
  • FIG. 4 is a flowchart of processing, by a CDN content center, each original media content and distribution according to an embodiment of the present invention
  • FIG. 5 is a second flowchart of processing, by the CDN content center, each original media content and distribution according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a process for processing a CDN content center in an active manner and a passive manner according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of a service node for processing each original media content according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of a type of a service node identifying a terminal according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of a type of a service node identifying a terminal according to an embodiment of the present invention;
  • FIG. 11 is a flowchart of a service of a terminal accessing a service node by using an HTTP protocol according to an embodiment of the present invention;
  • FIG. 12 is a service flow of a terminal accessing a service node by using an HTTP protocol according to an embodiment of the present invention.
  • FIG. 13 is a flowchart of a service of a terminal accessing a service node by using an RTSP protocol according to an embodiment of the present invention.
  • FIG. 14 is a flowchart of a service flow of a terminal accessing a service node by using an RTSP protocol according to an embodiment of the present invention
  • FIG. 15 is a structural diagram of a service node setting according to an embodiment of the present invention.
  • FIG. 16 is a structural diagram of a CDN content center device according to an embodiment of the present invention.
  • FIG. 17 is a structural diagram of a multimedia content distribution system according to an embodiment of the present invention.
  • FIG. 18 is a logical structural diagram of a multimedia content distribution system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of a multimedia content distribution method, device and system according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
  • a multimedia content distribution method provided by the embodiment of the present invention, as shown in FIG. 1 specifically includes the following steps:
  • S101 The service node receives an access request sent by the terminal to request to acquire the first media content.
  • S102 the service node identifies the type of the terminal.
  • the service node matches, according to the identified type, the second media content that is consistent with the first media content and the media format matches the type of the terminal, and the media content saved locally by the service node.
  • the service node performs multi-format conversion on the original media content sent by the content distribution network CDN content center according to the media content configuration information, or performs multi-format conversion on the original media content according to the media content configuration information by the CDN content center. Forwarded to the service node to get;
  • SI04 Return the matched second media content to the terminal.
  • the terminal may be a user terminal, and the embodiment of the present invention does not limit the specific type of the terminal.
  • the CDN content center or the service node performs multi-format conversion on each original media content, and supports the generation of the global multi-version element for each original media content delivered by the service system, that is, for different versions of the media content generated by the same media content.
  • Data multi-version media content
  • no The same version can be distinguished by file name, identifier or suffix.
  • the terminal requests to obtain media content, it supports sending the most suitable media content (matching the media content requested by the terminal) according to the multi-version media content metadata.
  • the specific multi-version media content information is shown in Table 1:
  • step S102 the service node or the CDN content center performs multi-format conversion on each original media content according to the media content configuration information, which specifically includes:
  • the service node or the CDN content center performs multi-format conversion on each original media content according to media parameter information corresponding to multiple media formats in the media content configuration information delivered by the network control center, and respectively generates media content in a corresponding format, in the present invention.
  • the media parameter information may include one or any combination of the following parameters: media code rate, resolution, file format, such as the foregoing media.
  • the body code rate may be a video/audio code rate, that is, used in the encoding process.
  • the video/audio is re-encoded by different sampling frequencies and algorithms.
  • the service node or the CDN content center is the media parameter information according to the video/audio code rate.
  • each code rate may be different.
  • the original media content is transcoded into media content such as 500Kbps > 200Kbps and 120Kbps, so that it can be matched with various types of terminals.
  • the foregoing resolution may also be: video resolution, picture resolution, etc.
  • the service node or the CDN content center may convert the original video or picture into videos or pictures of different resolutions respectively, thereby ensuring the terminal requirements of each type.
  • Matching; the file format can be a video/audio format.
  • the format of the original multimedia content sent by the CDN content center is a specific format, such as mp4, flv, ts, etc., for a certain terminal, the video content of a specific format cannot be played, the service node Or the CDN content center can convert the video content of the specific format into the media format that the terminal can support.
  • the network control center configures the media content sent by the service system.
  • the media content configuration information is sent to the service node or the CDN content center.
  • the network control center may first return to the service system. After confirming the message, the processed media content configuration information is first sent to the service node or the CDN content center, and the media content configuration information obtained by the processing is first sent to the service node or the CDN content center, by the service node or The CDN Content Center returns a confirmation message to the Network Control Center, and then the Network Control Center returns a confirmation message to the business system.
  • the service node performs multi-format conversion on each original content delivered by the CDN content center according to the media content configuration information, wherein each original media content of the CDN content center is sent by the service system to the CDN content center.
  • the CDN Content Center configures information according to the media content, and also performs multi-format conversion on each original media content delivered by the business system.
  • the CDN content center forwards the multi-format converted media content to the service node, which may be implemented in the following active or passive manner:
  • the CDN content center After the CDN content center performs multi-format conversion on each original media content, the CDN content center directly sends the converted media content to the service node;
  • Passive mode After the CDN content center performs multi-format conversion on each original media content, it temporarily exists locally.
  • receiving the request initiated by the terminal forwarded by the service node to obtain access to the media content please temporarily store the media.
  • the content is sent to the service node.
  • the request initiated by the terminal to obtain the access request of the media content may be any terminal, that is, once the CDN content center receives the request for obtaining the media content initiated by any terminal for the first time, the temporary media content is temporarily stored.
  • the process of sending the CDN content center to the service node in an active manner can be implemented through the following processes:
  • the CDN content center sequentially sends the converted media content to the service node;
  • the CDN content center sends a receiving confirmation message to the serving node.
  • S203 The CDN content center determines whether the reception success message sent by the service node is received, and if yes, step S204 is performed, and if no, step S2 is repeatedly performed (H S203; S204: The CDN content center ends the sending task.
  • the process of sending the CDN content center to the service node in a passive manner can be implemented through the following processes:
  • the CDN content center temporarily stores the converted media-i content locally
  • step S302 The CDN determines whether an access request initiated by the terminal that is forwarded by the service node to obtain the media content is received, and if yes, step S303 is performed, and if no, step S301 is performed;
  • the CDN content center sends each media content to the service node one time;
  • S304 The CDN content center sends a receiving confirmation message to the service node.
  • the CDN content center determines whether the receiving success message sent by the service node is received, and if yes, executing step S306, if no, repeating steps S303 to S305;
  • the CDN content center processes each original media content and the distribution process specifically includes the following steps:
  • the service system (which may be a content provider (CP) to provide media content, or a service provider (SP) to provide media content, this process takes the CP as an example) to deliver media processing configuration data to the network control center.
  • CP content provider
  • SP service provider
  • the network control center can also be referred to as the control center for short.
  • This step can also be understood as the CP issues content adaptation requirements to the control center;
  • the network control center processes the media configuration data and transmits the media processing configuration data to the CDN content center;
  • the CDN content center receives the number of packets and returns a response message to the network control center after the local content takes effect; the network control center returns a response message to the CP;
  • the CP injects each original media content into the CD content center;
  • the CDN content center processes each original media content and processes it to generate multiple versions of the original media content, corresponding to different file formats, code rates, and resolutions;
  • the CDN Content Center supports proactively distributing processed media content to different service nodes in an active manner
  • the media content center After the CDN content center finishes processing, the media content data is stored locally, and when the service node actively initiates a media content request to the CDN content center, the CDN content center transmits the media content data to the requesting service node.
  • the process for the CDN content center to actively distribute multiple versions of media content includes the following steps:
  • the CDN content center After completing the pre-processing of the local media content, the CDN content center first initiates an original media content synchronization request to the service node, and distributes the processed media content to the CDN service node;
  • the CDN content center sequentially initiates a media content synchronization request to the service node according to the multiple versions of the media content processed locally, and distributes all versions of the media content to the CDN service node;
  • the CDN content center After all versions of the media content data are distributed by the CDN content center to the service node, the CDN content center sends a distribution result confirmation message to the service node;
  • the service node replies to the CDN Content Center to confirm that all versions of the media content data have been successfully received;
  • the CDN Content Center distributes multiple versions of media content in a passive manner, including the following steps:
  • the CDN content center sends the media content to the service node
  • the service node sends the original media content data obtained from the CDN content center to the terminal;
  • the CDN content center transmits the multi-version media content metadata of the media content to the service node; the service node returns a response message to the CDN content center to confirm that the media content has been correctly received;
  • the service node initiates multiple versions to the CDN content center based on the received media content metadata.
  • the CDN content center returns corresponding media content data to the service node.
  • the specific implementation process of the service node processing each original media content is as follows: After the network management center processes, the media processing configuration data is transmitted to the service node;
  • the service node receives the data and returns a response message to the network control center after the locality takes effect; the network control center returns a response message to the CP;
  • the CP injects the original content into the CDN content center; the service node requests the media content from the CDN content center;
  • the CDN content center returns the media content requested by the terminal to the service node;
  • the service node After receiving the original media content, the service node processes the media content in real time, generates a copy file of the original file adapted to be played by the terminal, and stores the copy locally;
  • the service node returns a corresponding media content to the terminal according to the terminal type request
  • the service node generates corresponding metadata according to the current local media processing result, and sends the metadata to the network control center for the network control center to perform network-wide content management.
  • the CDN content center receives the data and returns a response message to the network management center.
  • This processing flow can be understood as the processing mode in the synchronous mode. In addition, it can also be asynchronous, as shown in Figure 8, after the network management center receives the media processing configuration data delivered by the service system, The process returns a response message to the service system, and then sends the corresponding media processing configuration data to the CDN content center.
  • the other processes are the same as those in FIG. 7 and will not be described here.
  • the service node identifies the type of the terminal by: the service node determines the type of the access request sent by the terminal to obtain the first media content; and determines that the type of the access request is an HTTP data packet.
  • the terminal type is identified according to a User-Agent field or a Bear Type field of the HTTP datagram header in the access request;
  • the type of the access request is a Real Time Streaming Protocol (RTSP) data message, according to the setting parameter (SE r J-PARAMETER) field or the directory type (Content-Ttype) in the access request.
  • SE r J-PARAMETER setting parameter
  • Content-Ttype the directory type
  • the serving node further determines the current network access type of the terminal according to the bearer type field (BearerType field) of the HTTP data packet header, and matches the terminal according to the size of the network access bandwidth.
  • the second media content of this terminal is the bearer type field (BearerType field) of the HTTP data packet header.
  • the service node can calculate the bandwidth used by the current terminal according to the option of PacketPair in the Content-Type field of the RTSP protocol data packet header, and the service node determines the terminal network capability according to the bandwidth. Therefore, the second media content suitable for the terminal is matched.
  • the service node may also use other existing matching methods according to the Content Type field to match the second media content suitable for the terminal, and no longer enumerate one by one. .
  • the terminal (which may be a user terminal) initiates a DNS request to a local Domain Name Syterm. (DNS) server;
  • DNS Domain Name Syterm.
  • the Local DNS initiates a domain name resolution request to the SP authorized DNS;
  • the SP authorizes the DNS to respond to the LocalDNS alias of the domain name in the form of an alias (CNAME);
  • the global scheduling module returns the best service node address as the parsing result
  • the user terminal initiates an HTTP GET request to the service node
  • Service node root Select the most suitable server according to certain strategies.
  • the user terminal initiates an HTTP GET request to the address returned by the service node
  • the server obtains the HTTP header information and analyzes the data, and requests the content by querying the superior node address to the upper node (CDN content center/service node);
  • the most suitable media content after processing is forwarded to the user terminal, and the media content may be undertaken by the CDN content center or by the service node.
  • the terminal (which may be a user terminal) initiates a DNS request to the LocalDNS server;
  • the SP authorizes the DNS to respond to the LocaiDNS alias of the domain name in the form of CNAME;
  • the global scheduling module returns the best service node address as the parsing result
  • LocalDNS responds to user terminal requests
  • the user terminal initiates an HTTP GET request to the service node
  • the service node selects the most suitable server according to a certain strategy
  • the user terminal initiates an HTTP GET request to the address returned by the service node
  • the server obtains the HTTP header information and analyzes it.
  • the content that is processed most suitable for access by the user terminal is sent to the user terminal.
  • Example 3 As shown in Figure 13, when the terminal accesses the service node by using the RTSP protocol (in the case of a service node miss), the specific implementation process is as follows:
  • the terminal (which may be a user terminal) sends a ⁇ _DNS request to the Local DNS server;
  • the local DNS authorizes the DNS to initiate a domain name resolution request to the SP;
  • the SP authorizes the DNS to respond to the LocaiDNS alias of the domain name in the form of CNAME;
  • the global scheduling module returns the best service node address as the parsing result
  • the user terminal initiates an RTSP DESCRIBE request to the serving node; the user terminal resends the RTSP DESCRIBE request to the new server address returned by the serving node;
  • the user terminal sends an RTSP SETUP, PLAY request to the server address;
  • the server returns an RTSP SETUP, PLAY response to the user terminal;
  • the jij terminal sends an RTSP SETJPARAMETER request to the server address;
  • the server obtains the TSP header information and analyzes it;
  • the server returns an RTSP SET-PARAMER response to the user terminal.
  • the terminal (possibly the user terminal) initiates a DNS request to the LocalDNS server;
  • the SP authorizes the DNS to respond to the LocaiDNS alias of the domain name in the form of CNAME;
  • the global scheduling module takes the best service node address as the solution
  • LocalDNS responds to user terminal requests
  • the user terminal initiates a - TSP DESCRIBE request to the service node;
  • the service node selects the most suitable server according to a certain policy, and sends the address to the user terminal in the manner of RTSP 302 redirection;
  • the new terminal address returned by the user terminal to the service node is resent RTSP DESCRIBE Please obtain: TSP header information and make less
  • the user terminal sends an RTSP SETUP, PLAY request to the server address;
  • the server returns TSP SETUP, PLAY response to the user terminal;
  • the user terminal sends an RTSP SET_PARAMETER request to the server address
  • the server obtains the RTSP header information and analyzes it;
  • the server returns an RTSP SET_PA AMER response to the user terminal;
  • an embodiment of the present invention further provides a service node device.
  • FIG. 15 it is a structural diagram of a service node device according to an embodiment of the present invention.
  • the service node device includes a receiving module 1501, and an identifying module 1502.
  • the receiving module 1501 is configured to receive a first media content access request sent by the terminal.
  • the identification module 1502 is configured to identify the type of the terminal.
  • the conversion module 1503 is configured to perform multi-format conversion on each original media content sent by the CDN content center according to the media content configuration information to generate each media content.
  • the storage module 1504 is configured to store each media content converted by the conversion module 1503, or each media content that is forwarded by the CDN content center according to the media content configuration information and converted by each format.
  • the matching module 1505 is configured to: according to the type of the terminal identified by the identification module 1502, match, from each media content in the storage module 1504, a second that matches the media content with the first media content and the media format matches the type of the terminal. Media content.
  • the sending module 1506 is configured to send the second media content to the terminal.
  • the conversion module 1503 is configured to perform multi-format conversion on each original media content according to media parameter information corresponding to multiple media formats in the media content configuration information delivered by the network control center, and respectively generate corresponding formats.
  • the media content information may include one or any combination of the following parameters: media code rate, resolution, file format.
  • the media code rate may be a video/audio code rate, that is, the video/audio is re-encoded by using different sampling frequencies and algorithms in the encoding process.
  • the conversion module 1503 performs the original according to the video/audio code rate parameter.
  • the original media content of different code rates can be transcoded into media content of commonly used code rates such as 500Kbps, 200Kbps, and 120Kbps, so as to ensure matching with various types of terminals; the resolution can be video.
  • the conversion module 1503 can convert the original video or picture into video or picture of different resolutions, so as to ensure matching with various types of terminal requirements; the file format can be video/audio, sometimes
  • the format of the original multimedia content sent by the CDN content center is a specific format, such as mp4, flv, ts, etc., for a certain type of video content that cannot be played on some terminals, the conversion module 1503 can convert the video content of the specific format into The media content of the media format that the terminal can support.
  • the identification module 1502 is specifically configured to determine the type of the access request sent by the terminal to obtain the first media content; when the determined type is an HTTP data packet, according to the HTTP datagram in the access request.
  • the user agent field or the bearer type field identifies the terminal type; when the determined type is an RTSP protocol data message, the terminal type is identified according to the setting parameter field or the directory type field in the access request.
  • the embodiment of the present invention further provides a CDN content center device.
  • the CDN content center device specifically includes a conversion module 1601 and a sending module 1602.
  • the conversion module 1601 is configured to perform multi-format conversion on each original media content according to media content configuration information, to generate each media content;
  • the sending module 1602 is configured to send each media content to the service node.
  • the conversion module 1601 is configured to perform multi-format conversion on each original media content according to media parameter information corresponding to multiple media formats in the media content configuration information delivered by the network control center, and respectively generate media content in a corresponding format.
  • the media parameter information includes one or any combination of the following parameters: media 'i code rate, resolution, file format.
  • an embodiment of the present invention further provides a multimedia content distribution system.
  • the multi-discipline content distribution system specifically includes at least one content distribution network CDN content center 1701, and each CDN content center. 1701 is connected to a plurality of service nodes 1702 and a network management center 1703, wherein:
  • the CDN content center 1701 is configured to perform multi-format conversion on each original media content delivered by the service system 1704 according to the media content configuration information, generate each media content, and forward the content to the service node.
  • the CDN content center 1701 provides functions such as injection of each original media content, storage of each media content after conversion, distribution of each media content, and management of local media content.
  • the service node 1702 is configured to store the media content forwarded by the CDN content center 1701 locally, or to perform multi-format conversion on each original media content forwarded by the CDN content center 1701 according to the media content configuration information, to generate each media content.
  • the first media content is consistent and the second media content whose media format matches the type of the terminal is returned to the terminal.
  • the service node 1702 obtains the media content from the upper-level service node (the CDN content center or the service node), and provides the service such as the web browsing and the media content download for the lower-level service node or the terminal; the service node 1702 further includes The terminal capability analysis module is configured to acquire related information of the terminal from the access request sent by the terminal, and determine, by using specific analysis and calculation, a format, a code rate, or a resolution of the media content (eg, video or audio) required by the terminal. The size, the service node 802 does not send the requested first media content to the terminal when transmitting the second media content to the terminal, but sends the corresponding converted second media content according to the capability analysis result of the terminal, thereby Can achieve better playback results.
  • the terminal capability analysis module is configured to acquire related information of the terminal from the access request sent by the terminal, and determine, by using specific analysis and calculation, a format, a code rate, or a resolution of the media content (eg, video or audio) required by the terminal.
  • the network management center 1703 is configured to deliver media content configuration information to the CDN content center 1701 or the service node 1702.
  • the network management center 1703 is mainly responsible for completing functions such as user scheduling, resources, content management, device monitoring, and operation management.
  • the network management center 1703, the CDN content center 1701, and the service node 1702 each include a media processing configuration module, and the media processing configuration module of the CDN content center 1701 or the service node 1702 receives the media processing configuration module delivered by the network management center 1703.
  • Media content configuration information also referred to as media processing configuration parameters
  • the media processing configuration module of the service node 1702 may further convert each original media content into multiple formats, and generate corresponding media content indexes of multiple formats. The information is sent to the network management center 1703 for the network management center 1703 to implement global media content management.
  • the CDN content center 1701 or the service node 1702 may further include a media processing module, configured to convert each original media content into a plurality of formats of media content according to obtaining media processing configuration parameters from the media processing configuration module.
  • the global scheduling module of the network management center is composed of a user scheduling module, a resource management module and a content management module, and mainly completes the control and scheduling of the entire network.
  • the CDN content center and the service node both include sub-modules of the above three modules, and the following is a user scheduling module, a resource management module, and a content content management module, including content view management and multi-version content management.
  • the content view is the content directory data of the system. It is responsible for the storage and indexing of metadata about the content. It is the core of content management control and maintains the distribution of content in the cache system.
  • the global scheduling system manages to the domain name level; for large files such as video and software downloads, the global scheduling system resource management module: is responsible for periodically collecting and recording the status information of each service node of the entire network, such as resources of the device. And health status, the remaining capacity of the equipment and the ability to service. Support active detection And passive collection of two types of modes, after the software and hardware resources in the service node are saturated, the user scheduling module can adaptively schedule the user according to the preset policy.
  • the user scheduling module obtains the distribution and usage of the device from the resource management module, and schedules the user request to the most suitable edge node according to the scheduling policy. For the missed case, the user may be served according to the miss policy.
  • the commonly used policy is the proximity judgment, and the local content access of the user terminal is implemented according to the local DNS of the user terminal or the IP address information of the user terminal.
  • the request initiated by the user terminal does not directly match the original media content request of the user terminal, but is coordinated according to the multi-version media content view of the original media content and the location of the distribution service node.
  • the network management center, the CDN content center, and the service node may include an operation management module, which is composed of modules such as operation support, service management, service monitoring, and billing management, and provides the following functions:
  • the operation support module has the following functions:
  • CPZSP Management Manage basic information of CPZSP customers, providing functions such as customer registration, cancellation, customer identity review, rights management and contract management.
  • Customer Service Management Provides customer complaints, complaint handling, customer consultation, satisfaction surveys, etc. for the content distribution system.
  • Security and rights management Provide system security management and hierarchical decentralized management, complete administrators,
  • Service management module Provides channel management, policy management and other configurations for CP/SP administrators, as well as operations such as additions, deletions, and changes to content. Supports self-administration by CP/SP and carrier administrators, and also supports Automatic refresh of content heat.
  • Service Monitoring Module Supports real-time access to complete business distribution, current traffic and other status information and graphical exhibitions to help CP/SP administrators understand the current operational status of the business.
  • Billing management module Management and statistics of billing when CP/SP uses content distribution system for content distribution.
  • the network management center, the CDN content center, and the service node may further include a network management module, and the main functions implemented are configuration management, performance management, fault management, and security management, specifically: Configuration management: Refers to the installation, assignment, connection, and reconfiguration and recovery configuration functions of the managed NE. Configuration management provides a set of functions for collecting, identifying, and controlling data from network elements and providing data to network elements, including security, status, and control, and installation functions.
  • Performance management refers to real-time monitoring of metrics of managed network elements, collection of performance data, and various statistical analysis reports of resource utilization and performance changes based on historical data on a regular or on-demand basis. Performance data should be displayed in an intuitive format, and the collected performance data can be analyzed to optimize system performance.
  • Fault management is responsible for monitoring the process of the streaming media service platform or communication link alarms, network device fault alarms, etc., for fault diagnosis and location analysis. The manager can be notified in a timely and conspicuous manner, and the fault can be recovered quickly.
  • Security Management provides network users (administrations) with security measures to prevent unauthorized users from using the network.
  • Security management mainly includes five functions: authentication, authorization, confidentiality, integrity and authorization.
  • the network control center may also include a service access module, which is mainly used for connecting with the CP/SP, and is mainly used for access authentication and authentication functions of the CP/SP service from the perspective of the network control center; Angle, mainly used to determine the way to inject content with CPZSP.
  • a service access module which is mainly used for connecting with the CP/SP, and is mainly used for access authentication and authentication functions of the CP/SP service from the perspective of the network control center
  • Angle mainly used to determine the way to inject content with CPZSP.
  • the multimedia content distribution method, the service node, the CDN content center device and the system provided by the embodiment of the present invention when the service node receives the request for acquiring the first media content sent by the terminal, the service node first identifies the type of the terminal, and then And matching, according to the identified type, the second media content whose media content is consistent with the first media content and the media format matches the type of the terminal, and then returns to the terminal;
  • the media content is a service node root.
  • the original media content sent by the CDN content center is multi-format converted, or the CDN content center performs multi-format conversion on each original media content according to the media content configuration information. After forwarding it to the service node.
  • the CDN content center or the service node performs multiple formats on the original media 'i content, and the service system does not need to process each original media content, and only the original media content is Send to the CDN Content Center Yes, this greatly reduces the computing pressure and storage pressure of the business system, and improves the operating efficiency of the business system.
  • the service node may identify the type of the terminal, and return the second media content that matches the first media content to the terminal, thereby avoiding that the multimedia content sent by the service node does not match the terminal type. Unable to play and watch properly.

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

Abstract

La présente invention se rapporte à un procédé, à un dispositif et à un système de distribution de contenu multimédia. Le procédé selon l'invention comprend les étapes suivantes : un nœud de desserte reçoit une demande d'accès portant sur l'acquisition d'un premier contenu multimédia transmis par un terminal ; et le nœud de desserte identifie le type du terminal. Ensuite, sur la base du type de terminal identifié, et à partir de chaque contenu multimédia stocké en local, le nœud de desserte exécute une mise en correspondance dans le but de découvrir un second contenu multimédia concordant avec le type du terminal. Enfin, le nœud de desserte retourne le second contenu multimédia concordant, au terminal. Chaque contenu multimédia stocké en local dans le nœud de desserte est obtenu sur la base de données de configuration de contenu multimédia : soit à la suite d'une opération de conversion multi-format exécutée par le nœud de desserte sur chacun des contenus multimédias originaux transmis par un centre de contenu CDN ; soit à la suite d'une opération de conversion multi-format exécutée par le centre de contenu CDN sur chacun des contenus multimédias originaux, suivie par une opération de transfert du résultat au nœud de desserte. La présente invention est apte à résoudre les problèmes liés au fait que le système de service existant est soumis à une forte pression en termes de calculs arithmétiques, à une forte pression en termes de stockage et que son efficacité opérationnelle est faible. L'invention permet ainsi de résoudre le problème lié au fait qu'un contenu multimédia transmis par un nœud de desserte ne peut pas être joué ou regardé normalement en raison du manque de concordance entre celui-ci et le type d'un terminal.
PCT/CN2013/075327 2012-05-28 2013-05-08 Procédé, dispositif et système de distribution de contenu multimédia WO2013178010A1 (fr)

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