EP2266295A1 - Gestion de la distribution de contenus - Google Patents
Gestion de la distribution de contenusInfo
- Publication number
- EP2266295A1 EP2266295A1 EP09729650A EP09729650A EP2266295A1 EP 2266295 A1 EP2266295 A1 EP 2266295A1 EP 09729650 A EP09729650 A EP 09729650A EP 09729650 A EP09729650 A EP 09729650A EP 2266295 A1 EP2266295 A1 EP 2266295A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- distribution network
- entity
- notification
- event
- entities
- 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.)
- Withdrawn
Links
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
- H04L67/306—User profiles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
- H04L41/508—Network service management, e.g. ensuring proper service fulfilment according to agreements based on type of value added network service under agreement
- H04L41/509—Network service management, e.g. ensuring proper service fulfilment according to agreements based on type of value added network service under agreement wherein the managed service relates to media content delivery, e.g. audio, video or TV
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
Definitions
- the present invention relates to content distribution networks and in particular audiovisual content.
- CDN Content Delivery Network
- WO02 / 071222 discloses a system for optimizing the routing of requests in a broadcast distribution environment. content for an Internet-type network. In this system, the transport resources of the network are monitored and the distribution of content is adjusted according to the transport capacity.
- the present invention addresses this need by using an event detection method on a content distribution network comprising
- the management of the content distribution network is based on the observation and analysis of signaling messages making it possible to take into account user behaviors and, in general, to perform a more detailed analysis than the analysis. content transport streams. In some situations, this also allows a predictive analysis of the load of a content distribution network.
- the signaling messages observed and analyzed are the messages relating to the initiation of the content distribution sessions and the delivery of the contents. Indeed, these messages allow a fine analysis of the load of the network. Consequently, the method of the invention offers a good adaptation to the specific needs of each entity connected to the distribution network.
- the information is transmitted between the entities connected to the content distribution network by means of notifications exchanged according to the so-called SIP protocol.
- said signaling message analysis comprises applying predetermined rules to determine the situations in which said transmission of management information is performed.
- said observation comprises the observation of signaling messages circulating between users and said entities connected to the distribution network as well as the observation of signaling messages circulating between said entities connected to the distribution network.
- said detection includes the detection of selected events in the group consisting of events relating to the load of distribution servers, events relating to the distribution of contents and events relating to the behavior of users of the distribution network.
- user behavior events include the repetition rate of requests made by these users and the comparison with thresholds applied per user as well as for user groups.
- the network comprises at least one distribution controller, a regional controller and a distribution server, said detection being implemented at a regional controller.
- the invention also relates to a management information transmission method for entities connected to a content distribution network, characterized in that it comprises:
- said entity record connected to the distribution network comprises a determination of a plurality of notification parameters and said transmission of management information is performed according to said notification parameters.
- the invention also relates to a system, a detection device and a notification device incorporating detection equipment as well as corresponding programs.
- the invention relates to a management information transmission system for entities connected to a content distribution network of a content distribution network comprising a notification device comprising in a memory a registration of entities. connected to the distribution network to be notified, means for detecting at least one event, integrated in at least one entity connected to the distribution network, means for transmitting event detection information by said detection means to the notification device, and means for transmitting management information corresponding to said event by said notification device to the entities connected to the registered distribution network, characterized in that said detection means are adapted for observation and analysis signaling messages circulating on the content distribution network.
- the invention also relates to an event detection device on a content distribution network, characterized in that this detection device comprises means for implementing the event detection method according to the invention. .
- this detection device is integrated in an entity connected to the content distribution network and is adapted for the observation and analysis of signaling messages circulating on the content distribution network.
- the invention also relates to a computer program for an entity of a content distribution network, characterized in that this program comprises code instructions which, when executed by a computer of said entity, result in execution of the steps of the event detection method according to the invention.
- the invention also relates to a computer program for a management information notification device for entities connected to a content distribution network, characterized in that this program includes code instructions which, when they are executed by a computer of this device, cause the recording of entities connected to the distribution network to be notified, the detection of events by the observation and the analysis of signaling messages of the notification network and the transmission of management information corresponding to said event to the entities connected to the distribution network recorded.
- the invention also relates to a computer program for a management information notification device for entities connected to a content distribution network, characterized in that this program includes code instructions which, when they are executed by a computer of this device, cause the detection of events by the observation and analysis of signaling messages of the notification network and the transmission of management information corresponding to said event to the entities connected to the network of notification. recorded distribution.
- FIG. 1 is a diagram of a system embodying the invention ;
- FIG. 2 is a general flowchart of the method of the invention.
- FIG. 3 and 4 show data organization models.
- the present invention will be described with reference to a closed type content distribution network operating according to the so-called "open IPTV forum” standard (www.openiptvforum.org). In this standard, three main distribution entities are defined and prioritized.
- the first entity is the distribution controller or CDN controller (CDN Controller). This entity is the entry point of a content distribution network.
- CDN controller receives all session establishment and content distribution requests.
- the distribution controller can redirect these requests by performing a first level of analysis. In particular, the location of the user and the overall capacity of all nearby servers are taken into account.
- the CDN controller can also redirect requests to other CDN controllers for load balancing purposes.
- the second entity is the regional controller, or cluster controller.
- This entity includes one or more servers grouped geographically. A second filtering of the requests from the CDN controllers is made and allows the final choice of the content distribution server for a given request.
- the cluster controller can also store user requests to servers to ensure traceability.
- the third entity is the content distributor or content delivery server (Content Delivery Function or Basic Server). This entity performs the distribution function and allows the distribution of content following requests from users received through the cluster controller.
- Figure 1 illustrates a network implementing such entities.
- a content provider 2 such as a television station
- a content distribution network via, for example, an IP4 network.
- Each cluster controller has content distribution servers 10.
- Users 12 are also connected to the network 4 through local or other networks, generally designated by the reference 14.
- the system includes a content distribution service server 16 connected to a user database 18.
- This server 16 manages the authentication, the user accounts and generally the content distribution offer.
- the entities of the network communicate using an asynchronous protocol known by the acronym SIP (SESSION INITIATION PROTOCOL).
- system implementing the invention comprises a notification server 20 connected to the content distribution network and associated with a database 22 grouping notification parameters.
- the content distribution network that is to say the entities or servers that actively participate in the distribution of content
- CDN content distribution network
- these are servers 6, 8 and 10.
- a cluster is called a cluster consisting of a cluster controller and associated distribution servers, that is servers 8 and 8. 10.
- entity connected to the distribution network is any entity involved which includes the service server 18 or the notification server 20.
- the method starts with a registration of entities connected to the distribution network with the notification server 20.
- it is the recording of the CDN 6 controller but the same logic is applicable to any which entity connected to the distribution network.
- the recording comprises a transmission 32 of a subscription request (SUBSCRIBE) transmitted by the controller CDN 6 to the notification server 20.
- the server 20 issues an acknowledgment 34 defined in the SIP specification as a message 200 OK.
- the request 32 comprises notification parameters such as the list of events against which the controller CDN 6 wants to receive a notification or the conditions of this notification.
- the CDN controller 6 may wish to be notified asynchronously or periodically with an aggregation of notifications or other specific conditions. These notification settings are stored in the database
- the record 30 also includes a transmission 36 of the current status of the resources related to the events by reports to which the controller CDN 6 wants to receive a notification.
- This transmission 36 is performed with a type of NOTIFY message and the CDN controller 6 responds with an acknowledgment 38 type 200 OK.
- the method then comprises event detection.
- This detection is based on the observation 42 and the analysis 44 of the signaling messages circulating on the content distribution network. Indeed, existing content distribution network management solutions are based on traffic analysis and link transport capabilities. It is therefore essentially flow observations when using the links.
- the detection is based on the signaling messages. These signaling messages are not specific to event detection but are messages exchanged between entities as part of the normal operation of the content distribution network.
- signaling messages By using signaling messages, it is possible to detect events related to user behaviors. In addition, the analysis of the signaling messages makes it possible, in certain situations, to anticipate events by detecting favorable conditions or precursory signs. It then becomes possible to manage the CDN predictively before the occurrence of the event unlike existing systems that only monitor the transport of content.
- the status of a cluster controller is determined by its current load, its maximum load, the distributed content as well as load thresholds and behavioral thresholds defined with respect to the user as will be described in more detail later. This status is obtained by analyzing information from each distribution server attached to the cluster controller. Among these information, the current load and the maximum load are important parameters that are obtained by analyzing the signaling messages associated with the sessions for delivering open content on this distribution server.
- the method comprises the observation, through signaling messages, of generic information on the session and in particular the identification of the content distribution session and the SDP offer (SESSION DESCRIPTION PROTOCOL), information from the beneficiary of the content flows, that is to say from the user and in particular his address on the network, the activity in progress, including the PAUSE, PLAY, or WAIT instructions, and the expiry date of the rights on the current stream.
- the method also includes observing the information for each content stream of the current session and in particular the bandwidth used the start date, an estimated end date, the ports on which the data is sent and received.
- Controller status is determined by information on maximum load, current load, content availability, and load levels for each cluster.
- Observation of signaling messages is performed at the level of cluster controllers that see all signaling messages passed between users, distribution servers, and the CDN controller.
- the signaling messages observed are those relating to the initiation and delivery of content.
- other signaling messages can be observed and analyzed.
- the messages thus observed are then analyzed.
- the analysis is also performed by the cluster controller.
- the analysis is performed at the notification server 20. Based on the data models explained with reference to FIGS. 3 and 4, it is possible to determine events relating to the load. content distribution network, content distribution or user behavior.
- predetermined rules are applied to determine the nature of the events from the observed signaling messages.
- the following is the logic for determining the elements from the signaling messages observed.
- Termination of an RTSP session - an extended PAUSE message from the user
- the detection of these events is performed by the cluster controller. If there is no response from the cluster controller, the detection is performed by the CDN controller.
- the entities connected to the distribution network likely to be interested in a notification relating to this event are as follows:
- the cluster controller to detect the achievement of a load level
- the CDN controller to be informed of the cluster load.
- the following situations can detect an event that changes the maximum capacity of a cluster:
- the following information is affected by the event: - Content distribution session information;
- the entities connected to the distribution network likely to be interested in a notification relating to this event are as follows: - The cluster controller for the detection of the achievement of a level of capacity;
- Receiving a load change message from a cluster can detect a load change event of a CDN.
- the detection is performed by the CDN controller and the current load information of the CDN is affected.
- the entities connected to the distribution network likely to be interested in a notification relating to this event are the following: - Another CDN controller managing the same CDN or another CDN; - Entities providing a content distribution service and having the choice of several CDNs.
- Receiving a capacity change message from a cluster can detect a change in the capacity of a CDN.
- the detection is performed by the CDN controller and the CDN's capacity information is assigned.
- the entities connected to the distribution network likely to be interested in a notification relating to this event are the following: - Another CDN controller managing the same CDN or another CDN;
- the detection of such an event is provided by the cluster controller. This does not affect any of the information in the previously described data model, but may affect the policy for determining the clusters used. Cluster controllers and CDN controllers are likely to be interested in notification for this event.
- the receipt of a load change message from a cluster and the comparison of this load with stages makes it possible to detect the reaching and / or the crossing of load levels by a CDN.
- the entities connected to the distribution network likely to be interested in a notification relating to this event are as follows:
- the entities connected to the distribution network likely to be interested in a notification relating to this event are the following: - If it is applicable, the other cluster controllers of the same cluster to ensure the distribution of the load;
- the detection of a change in the availability of contents of a CDN is ensured by receiving a message about such a change by the controller CDN.
- the stored content availability information is affected by this event.
- the entities connected to the distribution network likely to be interested in a notification relating to this event are as follows:
- Repetition of PLAY messages from the same user beyond a certain level is detected by the cluster controller. This repetition potentially translates into a malfunction of the distribution server and may result in a change in the content server selection policy of the cluster. It can also translate a security attack.
- the same logic applies to the detection by the cluster controller of the repetition of PLAY messages beyond a step and by a number of users above a given threshold.
- the entities connected to the distribution network likely to be interested in a notification relating to these events are as follows:
- Information about the content delivery session is assigned accordingly.
- the entities connected to the distribution network likely to be interested in a notification relating to this event are as follows:
- the method therefore has an event obtained by observing and analyzing the signaling messages circulating on the content distribution network.
- the method then comprises transmitting the event information to the notification server 20 by the entity that detected this event, i.e., in the example described by the cluster controller.
- This transmission 50 implements a PUBLISH message transmitted during a step 52.
- the event information includes a simple description of the event or management information more elaborated as for example, an identifier of a replacement server in case of overload of a given server.
- the notification server acknowledges receipt of this event information in a step 54.
- the notification server 20 then initiates a transmission of management information 70 corresponding to said event to different entities of the content distribution network.
- This transmission comprises, in the example, a NOTIFY message 72 whose reception is acknowledged by an acknowledgment 74.
- the notification server thus transmits to the entities connected to the distribution network concerned, a management information corresponding to the detected event. by observing the signaling messages.
- the transmitted information may be simple descriptions of the event or more elaborate management information.
- the transmission 70 of management information is performed in application of the transmission parameters determined during the recording 30.
- management information relating to certain events can be propagated to certain entities connected to the distribution network and not to others.
- cluster load or capacity change events or content availability information is passed from the cluster controller to other cluster controllers as well as to the CDN controller and to the peer controller. provision of content distribution service.
- elements relating to user behaviors are not necessarily transmitted to the CDN controller but may be transmitted to the cluster controller and a security principal.
- this method is equally applicable to open or closed networks and allows optimization based on the user behavior, on a notification mechanism, and on the observation of signaling messages.
- the event analysis from the signaling messages makes it possible to manage the content distribution network in a predictive manner.
- the detection and notification functions can be implemented by computer programs for entities of a content distribution network. These programs include code instructions for the implementation of the method as described above.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Information Transfer Between Computers (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0852149 | 2008-04-01 | ||
PCT/FR2009/050542 WO2009125155A1 (fr) | 2008-04-01 | 2009-03-31 | Gestion de la distribution de contenus |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2266295A1 true EP2266295A1 (fr) | 2010-12-29 |
Family
ID=40032542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09729650A Withdrawn EP2266295A1 (fr) | 2008-04-01 | 2009-03-31 | Gestion de la distribution de contenus |
Country Status (3)
Country | Link |
---|---|
US (1) | US8996685B2 (fr) |
EP (1) | EP2266295A1 (fr) |
WO (1) | WO2009125155A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8787362B2 (en) * | 2009-04-01 | 2014-07-22 | Qualcomm Incorporated | Fall back using mobile device assisted terminating access domain selection |
US8510807B1 (en) | 2011-08-16 | 2013-08-13 | Edgecast Networks, Inc. | Real-time granular statistical reporting for distributed platforms |
CN106656675B (zh) * | 2017-01-03 | 2020-01-21 | 北京奇虎科技有限公司 | 一种传输节点集群的检测方法和装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6763384B1 (en) * | 2000-07-10 | 2004-07-13 | International Business Machines Corporation | Event-triggered notification over a network |
US7046680B1 (en) * | 2000-11-28 | 2006-05-16 | Mci, Inc. | Network access system including a programmable access device having distributed service control |
DE10110472C2 (de) | 2001-03-05 | 2003-10-09 | Jens Rehsack | Verfahren zum Steuern einer Vielzahl von Computern beim Auftreten eines Stromausfalls |
US7822871B2 (en) * | 2001-09-28 | 2010-10-26 | Level 3 Communications, Llc | Configurable adaptive global traffic control and management |
US7403993B2 (en) * | 2002-07-24 | 2008-07-22 | Kasenna, Inc. | System and method for highly-scalable real-time and time-based data delivery using server clusters |
US7606197B2 (en) * | 2004-08-23 | 2009-10-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Event notification in a hybrid network |
US7961622B2 (en) * | 2005-09-02 | 2011-06-14 | Tekelec | Methods, systems, and computer program products for monitoring and analyzing signaling messages associated with delivery of streaming media content to subscribers via a broadcast and multicast service (BCMCS) |
-
2009
- 2009-03-31 EP EP09729650A patent/EP2266295A1/fr not_active Withdrawn
- 2009-03-31 WO PCT/FR2009/050542 patent/WO2009125155A1/fr active Application Filing
- 2009-03-31 US US12/935,342 patent/US8996685B2/en not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2009125155A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20110029668A1 (en) | 2011-02-03 |
US8996685B2 (en) | 2015-03-31 |
WO2009125155A1 (fr) | 2009-10-15 |
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