CN100463516C - An interactive network TV system - Google Patents
An interactive network TV system Download PDFInfo
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- CN100463516C CN100463516C CNB200510101371XA CN200510101371A CN100463516C CN 100463516 C CN100463516 C CN 100463516C CN B200510101371X A CNB200510101371X A CN B200510101371XA CN 200510101371 A CN200510101371 A CN 200510101371A CN 100463516 C CN100463516 C CN 100463516C
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Abstract
The related interactive network TV system applies content-distribution framework to arrange flow media devices (servers) to relative nodes in network, and the latter real-time uses flow media protocol to distribute data to network edge devices or distributes non-real-time content to edge device by traditional FTP. This invention combines simplicity of integrative management and service expansion of hierarchical system structure, and fit to construct enterprise-level IPTV system and custom service scale.
Description
Technical field
The present invention relates to Web TV (IPTV) system, be specifically related to the framework of interactive Web TV system.
Background technology
Streaming Media is to use the flow transmission technology, transmitting multimedia data during by network implementation.Fluidisation (Streaming) is divided into the grouping of suitable size to data, transmits between the server and client side then.The handling process of real time data resolves into several flow processs such as transmission, decoding and broadcast.Client can be when playing a grouping, and the next grouping of decoding receives follow-up grouping simultaneously, is similar to pile line operation.The terminal use just can watch program in client in real time by player.
Streaming Media is corresponding with traditional downloading and playing mode.The advantage of traditional media play mode is to play with download to separate, and therefore broadcast is irrelevant with network speed, and the quality that can reappear transmitting terminal can also once be downloaded repeatedly broadcast.
But only the IPTV system that is made up by stream media technology or perhaps stream media equipment generally is centralized, only is fit to the limited terminal use's service at certain little zone.If increase the terminal use on this basis again, just can be because of the disposal ability of IPTV system, and influence is to terminal use's response time; In addition, also can limit the stream rate that stream media server system is sent to the terminal use, thereby can not reappear the media quality of transmitting terminal because of the bandwidth ability of IPTV entire system.
Content distributing network (Content Delivery Network), i.e. content release and express delivery network, it is a kind of not effective solution of good problem of internet performance that solves that development in recent years is got up.The user utilizes this technology to set up a content distributing network of being convenient to visit, just by on Internet, increasing the new network architecture of one deck, with the requirement of the content of website, source according to different user, with its content that needs (is not all contents in website, source, different with mirror image technology) be distributed to and go up (Cache Server server) near user's network " edge ", make the user can obtain required content nearby, avoid owing to a large amount of clients is visited the network congestion that cause a website simultaneously with this, thereby guaranteed making full use of under the prerequisite of existing resource, solved little and the contradiction that the user capture amount is big of the network bandwidth technically, made the user in the shortest time, obtain oneself wanting the content of visiting.
IPTV (IPTV) is a kind of multiple technologies and one such as broadband cabled television network, collection the Internet, multimedia, communication utilized, and the brand-new technology of the multiple interactive services that comprises Digital Television is provided to the domestic consumer.The user can have dual mode can enjoy the IPTV service: (1) computer, (2) network machine top box+common TV.
IPTV is a kind of new life's technology and a business, and the network system framework of bearing bed is mainly used for reference traditional video on-demand system (VOD).There are three kinds of architectures in traditional VOD system.
(1) centralized architecture
Constitute central server by one or more servers, all user's requests all are addressed to central server.Central server is being stored all program datas, and provides order program service for all users.Obviously this simple in structure, be easy to management, but cause the bottleneck of network or server system easily.
(2) layer-stepping architecture
The layer-stepping architecture is easy to enlarge service range, and the level of layering can change along with the size of service range.In this structure, server connects into tree, and central server is placed on the tree root position, is that the user serves by the server on the leaf node, and the server of each leaf node is all being deposited the subclass of all program datas in the father node server.One of shortcoming of this structure is that a program has backup possibly on many servers, causes the waste of memory space, and the program of user's program request needs the long response time not on the leaf node server time.
(3) distributed architecture
From level, distributed architecture has only two-layer, central server and home server.But on the angle of system design and realization, have the distribution management of a plurality of home servers, the communication issue between load balance between home server and central server and home server.
Summary of the invention
The technical problem to be solved in the present invention is, sets up a kind of framework of new IPTV, reaches the appearance of bottleneck in the minimizing system, can build required high-quality I PTV system easily, and can manage and control entire I PTV system easily.
The interactive Web TV system that the present invention proposes, the whole system framework adopts the content distributing network framework, stream media equipment (streaming media server) is deployed to the respective nodes of network.Described stream media equipment utilizes stream media protocol that real-time stream medium data is distributed to the network edge stream media equipment, or utilize traditional file transfer protocol (FTP) to be distributed to the network edge stream media equipment the non real-time content, present to the user in real time by the marginal flow media device.
In the present invention, whole network system is set up by different level; Each level comprises a node at least; Each node comprises at least one Node Controller and at least one stream media equipment, all stream media equipments of described this intranodal of Node Controller control and management, give the Node Controller of last layer time with the data analysis summarizing and reporting of each stream media equipment of this intranodal, and the service message and the message on the stream media equipment on upper strata are resolved, change, transmitted; After the data analysis that next level Node Controller of collecting is reported downwards the Node Controller of one deck minor node issue an order, adjust the operating state of the stream media equipment of next level Node Controller or next level intranodal.Same level each node between can communicate by letter, and can carry out content distribution.Each node configuration of same level becomes to rely on node, just corresponding load is joined to the low weight dependence node of its certain load after the load of certain node reaches certain load.
The present invention combines the simplicity of the centralized management of centralized architecture, the service extensibility of layer-stepping architecture, and simultaneously each node of same level can communicate by the mode of being arranged to rely on node.Use the present invention, can make up enterprise-level and carrier-class IPTV system, and can increase or reduce the level of entire I PTV system from node, thereby customize the service scale of the IPTV system that will make up by increase or deletion.Adopt the centralized management of centralized configuration at each level, for certain single level, only need to be concerned about the direct lower floor on the network physical, in the service management and simple in the network management, convenient.Each level gathers the management data of oneself, report the direct upper strata of this level again by single management channels after analyzing, thus numerous huge data of avoiding the direct upper strata of this level to manage this hierarchical direct (HD) lower floor.
Description of drawings
Fig. 1 is the system architecture schematic diagram that comprises an embodiment of three levels of the present invention;
Fig. 2 is that system comes to provide for the terminal use schematic flow sheet of service by the mode of real time content distribution in one embodiment of the present of invention.
Embodiment
Main points of the present invention are:
A. the whole network architecture is layering, and level can customize, can be according to the needs expansion and the reduction of service range.Each node in the same level adopts distributed frame, and promptly each node of same level can be communicated by letter.
B. form by at least one Node Controller and at least one stream media equipment at each node of each level.Node Controller mainly be a plurality of stream media equipments to this intranodal carry out professional go up and network on management.And the message on the service message on upper strata and this laminar flow media device resolved, changes, transmits.Each node of same level has certain load balance ability by being configured to rely on node, promptly corresponding load will be joined to the low weight dependence node of its certain load after the load of certain node reaches certain load.
C., two kinds of content ways of distribution are arranged in the content distributing network that utilizes stream media equipment to build:
(a) utilize the distribution of the real-time media stream of stream media protocol.
(b) utilize traditional file transfer protocol (FTP) to carry out the distribution of complete file.
Be that the example network architecture of the present invention of opposing describes with three layers network configuration below.
As shown in Figure 1, for convenience, with the node called after root node of the superiors, a plurality of direct lower level node called after on the physical network arrangement of root node is from node, the structural node called after of the 3rd layer physical network leaf node.
At first, at a leaf node, just directly provide the node of service for the terminal use, the solution of employing is that a plurality of stream media equipments are concentrated cluster, and this manifold flow media device unification is the service of the terminal use in a certain zone.This manifold flow media device and at least one Node Controller are formed a fringe node.All stream media equipments of this intranodal of Node Controller control and management, the request of terminal use in all one's respective areas, at first navigate to Node Controller, Node Controller navigates to certain stream media equipment in this bunch according to the principle of load balancing with terminal use's request again.Simultaneously, the Node Controller of leaf node also will carry out the management on operational and the physical network to each stream media equipment of this intranodal, and with these management data analyses gather formation from node on business or the data that need of network management, report Node Controller from node.
Secondly, one from node, form by cluster stream media equipment and at least one Node Controller.The Node Controller control and management is from the stream media equipment of node itself, and communicate by letter with the Node Controller of each leaf node of its lower floor and the Node Controller of root node, collect the management data that leaf node is offered from the Node Controller of leaf node, so just avoided directly managing numerous stream media equipment of all leaf nodes, be unlikely to forming bottleneck from node from node.From Node Controller the Node Controller to leaf node after the data analysis of collecting is issued an order, adjust the operating state of the stream media equipment in leaf node controller or the leaf node etc.Also the data analysis in the operational and network management of collecting can be gathered to the root node controller report from node, and the unusual etc. of on the business function that this level can be handled and network management aspect solves at this level.
Form by cluster stream media equipment and at least one Node Controller equally at root node, each stream media equipment of this level at first will be controlled and manage to Node Controller, also to analyze simultaneously on the business function that following level reports and the data in the network management, adjust its operating state so that send order to following level as required.
Between each node of same level, can communicate by letter, and can carry out the content distribution, thereby each node of same level has constituted a kind of distributed structure.And each node of same level has certain load balance ability by being configured to rely on node, promptly corresponding load will be joined to the low weight dependence node of its certain load after the load of certain node reaches certain load.It can well solve bottleneck problem in the centralized architecture and the waste of storage space in the layer-stepping architecture and response time long etc. problem.
The mode that two kinds of content distributions are arranged in this programme.
1, when the streaming medium content of user request during not at the stream media equipment that finally navigates to, this stream media equipment will send real-time drop-down requests for content to the Node Controller of this node, the Node Controller of this node, will send real-time drop-down requests for content to the Node Controller of dependence node (can be the father node on the physical level, also can be certain node of same level) of oneself; The Node Controller that relies on node is subjected to after the drop-down request of real time content, can according to the stream media equipment that the principle of load balancing chooses a stream media equipment to adopt certain real time streaming transport protocol to navigate to for the terminal use from this section point real-time Media Stream is provided; The service scenario of this moment is such: certain stream media equipment that relies on node sends to the stream media equipment that the terminal use navigates to Media Stream, and the stream media equipment that the terminal use navigates to sends to the terminal use with Media Stream.
2, the content intact that prospective users is needed is distributed to the nearest network edge from the user.The Node Controller of the dependence node of certain node, send the request of received content, if both sides' Node Controller is reached an agreement, then both sides can select a stream media equipment of this intranodal, the stream media equipment that relies on node reads local data, with traditional file transfer protocol (FTP) whole media content is transferred to the stream media equipment that local node is chosen, writes data into local storage by this stream media equipment.
Fig. 2 is that system comes to provide for the terminal use situation schematic diagram of service by the mode of real time content distribution.Introduce its flow process below:
1, the stream media equipment 1 of leaf node 1 is asked in terminal use's request by set-top box (STB);
2, stream media equipment 1 finds that the local shared disk of local disk or leaf node 1 does not have content, and just the controller to leaf node 1 sends real-time drop-down requests for content;
3, (relying on node may be not only one to the dependence node of oneself for the controller of leaf node 1, supposition this moment has been chosen one that relies in the node, and be certain leaf node 2 in the same level), promptly the Node Controller of leaf node 2 sends real-time drop-down requests for content.
4, the Node Controller of leaf node 2 is chosen a stream media equipment 2 of this intranodal according to the principle of load balancing, and the various parameters of stream media equipment 2 is passed to the Node Controller of leaf node 1.The Node Controller of leaf node 1 is with stream media equipment 1 and stream media equipment 2 link setups.
5, stream media equipment 2 is transferred to stream media equipment 1 by the Streaming Media host-host protocol with real-time media stream.
6, stream media equipment 1 also is transferred to the terminal use by the Streaming Media host-host protocol with real-time media stream.
Claims (2)
1, a kind of interactive Web TV system is characterized in that:
The whole system framework adopts the content distributing network framework, stream media equipment is deployed to the respective nodes of network; Described stream media equipment utilizes stream media protocol that real-time stream medium data is distributed to the marginal flow media device, or utilize traditional file transfer protocol (FTP) to be distributed to the network edge stream media equipment the non real-time content, present to the user in real time by the marginal flow media device;
Whole network system is set up by different level; Each level comprises a node at least; Each node comprises at least one Node Controller and at least one stream media equipment, all stream media equipments of described this intranodal of Node Controller control and management, give the Node Controller of last layer time with the data analysis summarizing and reporting of each stream media equipment of this intranodal, and the service message and the message on the stream media equipment on upper strata are resolved, change, transmitted; After the data analysis that next level Node Controller of collecting is reported downwards the Node Controller of one deck minor node issue an order, adjust the operating state of the stream media equipment of next level Node Controller or next level intranodal; Can communicate by letter between each node of same level, and can carry out the content distribution; Each node configuration of same level becomes to rely on node, just corresponding load is joined to the low weight dependence node of its certain load after the load of certain node reaches certain load.
2, the described interactive Web TV system of claim 1 is characterized in that, level can be expanded and reduces according to the needs of service range.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200510101371XA CN100463516C (en) | 2005-11-11 | 2005-11-11 | An interactive network TV system |
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| CNB200510101371XA CN100463516C (en) | 2005-11-11 | 2005-11-11 | An interactive network TV system |
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| CN1964481A CN1964481A (en) | 2007-05-16 |
| CN100463516C true CN100463516C (en) | 2009-02-18 |
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| CN101110956B (en) * | 2007-06-25 | 2015-05-20 | 中兴通讯股份有限公司 | Management and control network for network television system and method thereof |
| CN101110947B (en) * | 2007-06-26 | 2010-09-29 | 中兴通讯股份有限公司 | Service scheduling method for interactive television system |
| CN101083604B (en) * | 2007-07-18 | 2011-05-25 | 中兴通讯股份有限公司 | Method for selecting and switching stream media server in content distributed network |
| CN101119474B (en) * | 2007-08-22 | 2010-12-08 | 中兴通讯股份有限公司 | IPTV service management system and method thereof |
| CN101374224B (en) * | 2007-08-25 | 2011-08-10 | 中兴通讯股份有限公司 | Method for logging in interactive network television system |
| CN101394541A (en) * | 2007-09-21 | 2009-03-25 | 中兴通讯股份有限公司 | File content distributing method for interactive network television system |
| CN101179702B (en) * | 2007-12-03 | 2010-12-29 | 中兴通讯股份有限公司 | Real time recording method of IPTV living broadcast television |
| CN101453623B (en) * | 2007-12-07 | 2011-10-26 | 中兴通讯股份有限公司 | Interactive network television system, stream distribution method thereof |
| CN101534204B (en) * | 2008-03-10 | 2011-08-31 | 中国网通集团宽带业务应用国家工程实验室有限公司 | Streaming media information distribution system and method thereof and user end |
| CN101557499B (en) * | 2008-04-09 | 2011-08-24 | 中兴通讯股份有限公司 | System and method for delivering media and method for renewing resource of media delivering system |
| CN101562673B (en) * | 2008-04-15 | 2012-01-18 | 中国电信股份有限公司 | Method and system for asymmetric link compensation in P2P transmission |
| CN101668164B (en) * | 2008-09-03 | 2011-09-21 | 中兴通讯股份有限公司 | Method, device and system for delivering internet protocol based TV content |
| CN102006504A (en) * | 2009-08-31 | 2011-04-06 | 中兴通讯股份有限公司 | Media unified control method and system |
| CN101710965A (en) * | 2009-11-24 | 2010-05-19 | 中兴通讯股份有限公司 | Full network storage and scheduling method and system for network television |
| EP2523454A4 (en) * | 2010-01-04 | 2014-04-16 | Alcatel Lucent | Edge content delivery apparatus and content delivery network for the internet protocol television system |
| US8850003B2 (en) * | 2010-04-20 | 2014-09-30 | Zte Corporation | Method and system for hierarchical tracking of content and cache for networking and distribution to wired and mobile devices |
| CN102006311A (en) * | 2010-12-28 | 2011-04-06 | 青岛海信网络科技股份有限公司 | Streaming media multifunctional distributing system and method |
| CN102905163B (en) * | 2011-07-29 | 2018-08-10 | 上海帕科软件科技股份有限公司 | IPTV system based on business interaction |
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