CN1905521A - System structure of broadcast-store grid - Google Patents
System structure of broadcast-store grid Download PDFInfo
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- CN1905521A CN1905521A CNA2006100266890A CN200610026689A CN1905521A CN 1905521 A CN1905521 A CN 1905521A CN A2006100266890 A CNA2006100266890 A CN A2006100266890A CN 200610026689 A CN200610026689 A CN 200610026689A CN 1905521 A CN1905521 A CN 1905521A
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Abstract
The invention belongs to intelligent IT technical field, concretely relating to a broadcast-storage gridding architecture. For 'information sharing basic structure', the invention provides a semantically based pre-connecting mechanism, using a 'broadcast-storage gridding' structure intercrossed of two groups of parallel lines vertical to each other to act as an alternative disseminator-fifth generation disseminator after WWW (fourth generation). And the concrete architecture based on 'broadcast-storage gridding' concept is divided into communication module and functional module, each comprising two submodules --'service center' and 'client end' , where each submodule is composed of several submodules. And the structure can effectively solve the problem of server end network jam in various environments, thus implementing 'fast information channels'.
Description
Technical field
The invention belongs to intelligent IT technical field, be specifically related to a kind of architecture based on the broadcast-storage network notion.
Technical background
Information resources have become the most valuable resource of era of knowledge-driven economy human kind sustainable development.In Internet, each visit of user all will be monopolized a part of bandwidth and server resource, repels other people and is taking in a flash together.When the people of the same resource of visit is many, be easy to occur the intrinsic shared conflict of interconnect architecture.
Because 80/20 rule, traditional network exists the serious visit capacity and the problem of information asymmetry.80% user only visits 20% website (actual network condition is great disparity more), and " sharing conflict " problem is serious day by day along with the sharp increase of network user's number.
So people place hope on the direction of next generation network development: on the grid (Network Grid).Grid is that whole Internet is integrated into a huge supercomputer, realizes the overall sharing of computational resource, storage resources, data resource, information resources, knowledge resource, Expert Resources.Information resources can indiscriminately be duplicated, but the Internet network is not the optimal selection that the information logistics distributes, and therefore need a kind of more advanced mode to realize that information resources are shared.Can conflict freely come the acquired information resource, and needn't concern this design original intention of information resources grid just of particular location that resource deposits according to required content.
For " information sharing foundation structure ", Chinese Academy of Engineering research group has proposed the notion based on " broadcast-storage network " of unified content location (UCL), point out to use a kind of mechanism of linking up in advance with semanteme to intersect " broadcast-storage network " structure that forms by two groups of orthogonal parallel lines, as atypical medium-Di five media after World Wide Web (WWW) (the 4th medium), this has established solid theory for " no conflicting information resource-sharing " and thoughts such as " taking the initiative in offering a hand of contents semantic ".
The principle of broadcast-storage network is referring to Fig. 1.
Summary of the invention
The objective of the invention is to propose a kind of realize easily, realizes " information express passway " with the phenomenon of effective settlement server end network congestion based on the architecture of broadcast-storage network notion.
The broadcast-storage network architecture that the present invention proposes is mainly finished following content:
(1) " broadcast ": the no conflict that realizes the information content is broadcasted.
(2) " deposit ": receiving terminal is according to the difference to the resource content demand, and selectivity receives information data, and these data are kept at receiving terminal.
The architecture of the broadcast-storage network that the present invention proposes is specific as follows:
Based on the architecture of broadcast-storage network notion as shown in Figure 2, form by communication module and functional module, altogether in:
(1) functional module comprises two submodules of " service centre " and " client ".
Service centre's submodule comprises:
(1) " information resource database design " module: its function is service centre to be searched for automatically the automatic sort merge of information resources that (extracting) arrives, and generates the resource library of programmes;
(2) " generation of content locating information " module: its function is that every resource of service centre is carried out " cleaning ", extract its semantic key content, determine its accurate resource location, and, determine to produce rolling of every day and broadcast the resource listing according to the semanteme of all resources of service centre location and broadcast situation;
(3) " design of protocol resource storehouse " module: its function is a protocol format of stipulating that all programs of service centre need be observed, and each program is all observed this form in transport process.
The client submodule comprises:
(1) " design of protocol resource storehouse " module: its function is a protocol format of stipulating that all programs are observed, and each program of service centre is all observed this form, and client receives by this protocol format when receiving;
(2) " information resource database design " module: and shared same " information resource database design " module of service centre, the program that client receives is also observed this design;
(3) " generation of predetermined content locating information " module: according to the programme that receives on the specific channel, the user is according to the hobby of oneself, need to select the program that receives, generates simultaneously " predetermined content locating information ", makes the client program of can locating and prestore.
(4) " query function " module: its function is by " design of protocol resource storehouse " module, according to the prior program format of agreement of service centre, client can be inquired about all programs by programme, thereby and carries out the work of preliminary election.
(2) communication module also comprises two submodules of " service centre " and " client ".
Service centre's submodule comprises:
(1) " reliable multicast protocol stack design " module: reliable multicast protocol data form has shown data cell network layer propagation in channel referring to Fig. 3.Wherein, numbering (ID) 8 Bytes: the unique sign that is this packet of sign.The ID of each packet that send every day is unique.
Time (Time) 8 Bytes: the time that packet sends, comprised information such as date.
Version (Version): 2 Bytes: current system version.
Total length (Length): 6 Bytes: the total length of this packet.
Head length degree (Header Length): 4 Bytes: the total length of this packet header part.
Data length (Body Length): 4 Bytes: the total length of this packet data part.
Head part variable-length (Header segment): the header part of this packet comprises for some summary infos of the program that will broadcast and other content locating information.
Data division variable-length (Data segment): the data division content of this packet comprises the programme content of concrete broadcast.
(2) " network layer multicast " module: this method is taked the form of multicast, is provided with a resource listing download channels especially, only transmits listing and other semantic matches classification chart etc., and this channel does not broadcast specific resource program; Other is provided with some resource program multicast channels, transmits various programs.Be provided with the client upload channel simultaneously, user's statistical information is returned to service centre, service centre can better be carried out program according to certain algorithm and roll the arrangement of broadcasting, and in time adjust program classification, semantic matches agreement etc. according to the user feedback of client.
The client submodule comprises:
(1) " reliable multicast protocol stack design " module: reliable multicast protocol data form has shown data cell network layer propagation in channel referring to Fig. 3, and client receives data and carries out data identification according to this form.
(2) " content monitoring " module: client is chosen after the program that will read according to programme, according to the program specifying information that provides in the programme (broadcast time, file size etc.), form content and monitor module, broadcast items information on the real-time listening channel, the function that prestores.
The broadcast-storage network architecture of the present invention's design possesses following characteristics:
1. based on the publication of taking the initiative in offering a hand/predetermined (Publish/Subscribe) structure.
Publish/predetermined (Publish/Subscribe) structure: in this structure, information resources send with multicast mode, receiving terminal adopts the mode of subscribing to, and pre-defined required information category and content receive according to predefined content when receiving information resources then.
Based on the mode of taking the initiative in offering a hand that this structure realizes, changed the Request/Response mode that traditional user initiatively files a request and obtains to serve to server, more meet people in most of the cases to the demand of information.Resource on the magnanimity World Wide Web (WWW) is sent to user side according to user's demand, realizes " information express passway ".
2. there is not the conflicting information broadcast service
Adopt broadcast mode to transmit data based on " broadcast-storage network " of publishing/be scheduled to (Publish/Subscribe) structure, haveing nothing to do of channel width resource with the reception number of users, ensuring escapement from confliction is shared identical information resources between each user, enlarge recipient's scope, dwindled the influence of " digital divide ".
3. the message pick-up of content-based semanteme
Under " broadcast-storage network " environment, the marked network resource no longer adopts the mode of address, distinguishes according to the classifying content of information but adopt.Transmit leg and recipient come the content of appointed information resource with predefined UCL and PCL information, and come reception information according to this content.
4. asynchronous real-time information is obtained
The function that " broadcast-storage network " provides real time data information to roll and play makes receiving terminal reception data inconsistent asynchronous specific with the transmission data time.For example, when receiving terminal began to receive information, transmitting terminal had begun to have sent a period of time, and the mode of utilization " roll and broadcast re-transmission " can remedy the loss of information.In fact, in the network of realizing at original Request/Response, though Request information and Response information are transmitted in strict accordance with synchronous sequence, but the time that Request proposes not is the real time that information resources are created, and therefore this structure can not realize that really information is obtained timely.And the P/S mode that " broadcast-storage network " provides is a kind of mode of taking the initiative in offering a hand, and what information was real-time broadcasts, and the user who does not receive can receive the information of replay very soon, thereby has both cancelled program log, realizes message pick-up timely again.
Description of drawings
Fig. 1 is the broadcast-storage network principal diagram.
Fig. 2 is the functional module diagram of broadcast-storage network architecture.
Fig. 3 is a reliable multicast protocol data form diagram.
Embodiment
The present invention will be described in detail with concrete embodiment in conjunction with the accompanying drawings.
Under the Internet environment, the broadcast-storage network system consists of the following components:
1, service centre
On the function, service centre mainly comprises " information resource database design " module and " generation of content locating information " module.The automatic sort merge of search (extracting) information resources that " information resource database design " module obtains service centre automatically generates the resource library of programmes.Simultaneously, these resources are by " generation of content locating information " module, every resource is carried out " cleaning ", extract its semantic key content, determine its accurate resource location, and, determine to produce rolling of every day and broadcast the resource listing according to the semanteme of all resources of service centre location and broadcast situation.
From communication, system is based on the reliable broadcast agreement, and service centre broadcasts on network layer, sends the resource listing, the resource program that is ranked of every day is rolled broadcast.
2, broadcast transmission channel
This method is taked the form broadcasted, is provided with a resource listing download channels especially, only transmits listing and other semantic matches classification chart etc., and this channel does not broadcast specific resource program; And be provided with some resource program multicast channels, transmit various programs.Be provided with the client upload channel simultaneously, user's statistical information is returned to service centre.Service centre can better be carried out program according to certain algorithm and roll the arrangement of broadcasting, and in time adjust program classification, semantic matches agreement etc. according to the user feedback of client.
3, a plurality of clients
Client is at first collected the resource programme, according to the contents semantic coupling, broadcasting on the group that oneself adds, carries out content and monitors, and collects required resource program.
A specific embodiment is as follows:
Under the Internet environment, information resources grasp from Internet in service centre, can be info webs, video, break etc., clean the information resources extraction of semantics through webpage, wait work according to the filing classification of protocol resource storehouse, this information is put into service centre's information resource database, generate its content locating information simultaneously, according to certain multicast algorithm, and resource location information, produce listing.
Network layer is carried out multicast, and a special channel is responsible for rolling and is broadcast listing, and the semantic classification between service centre and the client, and agreement etc. are message synchronously.Other has a lot of channels that specific resource program is rolled to broadcast.Be that service centre finishes the work of " broadcasting ".
Client at first will comprise from special channel that listing and semantic classification information etc. are rolled to be broadcast resource and collects.According to listing and local semantic matches system, " being scheduled to " content locating information, the user is in conjunction with finding out own programs of interest, and at this moment, " preliminary election " finished, and client begins the work of " depositing ".According to the resource program, client select to add broadcasts group, monitors, and when " broadcasting " during to program that the user selectes, this program is left.At this moment, monitor the algorithm that combines with content according to program predetermination broadcast time, make under whole program can both " deposit ", lost part packets of information not simultaneously also needn't be always broadcast group institute to this and " is broadcast " information and carry out the content stores coupling, and takies the client hardware resource.When the user can carry out " reading in advance " to this resource program, by the preview of the local program under client " has been deposited ", select and oneself really want the program browsed, delete uninterested content.
Claims (2)
1, a kind of architecture of broadcast-storage network, its main contents of finishing comprise:
Broadcast: the no conflict that realizes the information content is broadcasted;
Deposit: the receiving terminal basis is to the difference of the demand of resource content, and selectivity receives information data, and this information data is kept at receiving terminal;
It is characterized in that forming by communicator module and functional module, wherein:
(1) functional module comprises two submodules of " service centre " and " client ":
Service centre's submodule comprises:
(1) " information resource database design " module: its function is the automatic sort merge of information resources that service centre is searched automatically, generates the resource library of programmes;
(2) " generation of content locating information " module: its function is that every resource of service centre is cleaned, extract its semantic key content, determine its accurate resource location, and, determine to produce rolling of every day and broadcast the resource listing according to the semanteme of all resources of service centre location and broadcast situation;
(3) " design of protocol resource storehouse " module: its function is a protocol format of stipulating that all programs of service centre need be observed, and each program is all observed this form in transport process;
The client submodule comprises:
(1) " design of protocol resource storehouse " module: its function is a protocol format of stipulating that all programs are observed, and each program of service centre is all observed this form, and client receives by this protocol format when receiving;
(2) " information resource database design " module: and shared same " information resource database design " module of service centre, the program that client receives is also observed this design;
(3) " generation of predetermined content locating information " module: according to the programme that receives on the specific channel, the user is according to the hobby of oneself, need to select the program that receives, generates simultaneously " predetermined content locating information ", makes the client program of can locating and prestore;
(4) " query function " module: its function is by " design of protocol resource storehouse " module, according to the prior program format of agreement of service centre, client is inquired about all programs by programme, thereby and carry out the work of preliminary election;
(2) communication module also comprises two submodules of " service centre " and " client ":
Service centre's submodule comprises:
(1) " reliable multicast protocol stack design " module: reliable multicast protocol data form has shown data cell network layer propagation in channel.
(2) " network layer multicast " module: be provided with a resource listing download channels especially, only transmit listing and other semantic matches classification chart etc., this channel does not broadcast specific resource program; Other is provided with some resource program multicast channels, transmits various programs; Be provided with the client upload channel simultaneously, user's statistical information is returned to service centre, service centre can better be carried out program according to certain algorithm and roll the arrangement of broadcasting, and in time adjust program classification, semantic matches agreement etc. according to the user feedback of client;
The client submodule comprises:
(1) " reliable multicast protocol stack design " module: reliable multicast protocol data form, shown data cell network layer propagation in channel, client receives data and carries out data identification according to this form.
(2) " content monitoring " module: client is chosen according to programme after the program that will read, and according to the program specifying information that provides in the programme, forms content and monitors module, and the broadcast items information on the real-time listening channel prestores.
2, the architecture of broadcast-storage network according to claim 1 is characterized in that being made up of following components under the Internet environment:
(1) service centre
On the function, service centre mainly comprises " information resource database design " module and " generation of content locating information " module; The automatic sort merge of search information resource that " information resource database design " module obtains service centre automatically generates the resource library of programmes; Simultaneously, these resources are cleaned every resource by " generation of content locating information " module, extract its semantic key content, determine its accurate resource location, and locate and the broadcast situation, determine to produce rolling of every day and broadcast the resource listing according to the semanteme of all resources of service centre;
From communication, system is based on the reliable broadcast agreement, and service centre broadcasts on network layer, sends the resource listing, the resource program that is ranked of every day is rolled broadcast;
(2) broadcast transmission channel
Be provided with a resource listing download channels especially, only transmit listing and other semantic matches classification chart etc., this channel does not broadcast specific resource program; And be provided with some resource program multicast channels, transmit various programs; Be provided with the client upload channel simultaneously, user's statistical information is returned to service centre, service centre can better be carried out program according to certain algorithm and roll the arrangement of broadcasting, and in time adjust program classification, semantic matches agreement etc. according to the user feedback of client;
(3) a plurality of clients
Client is at first collected the resource programme, according to the contents semantic coupling, broadcasting on the group that oneself adds, carries out content and monitors, and collects required resource program.
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| CNA2006100266890A CN1905521A (en) | 2006-08-30 | 2006-08-30 | System structure of broadcast-store grid |
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| CNA2006100266890A CN1905521A (en) | 2006-08-30 | 2006-08-30 | System structure of broadcast-store grid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105635305A (en) * | 2016-01-19 | 2016-06-01 | 中国传媒大学 | Method for pushing unified content labels and server |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105635305A (en) * | 2016-01-19 | 2016-06-01 | 中国传媒大学 | Method for pushing unified content labels and server |
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