CN102802047A - Information subscribing and information broadcasting method and system with cross-network collaboration - Google Patents
Information subscribing and information broadcasting method and system with cross-network collaboration Download PDFInfo
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Abstract
The invention relates to an information subscribing and information broadcasting method and system with cross-network collaboration. The information subscribing and information broadcasting method comprises the following steps that: step 1, a terminal sends user operation information to a front end system by virtue of a two-way network; step 2, a front end statistics server updates a content source-user subscribing list; step 3, user state information is sent to the front end statistics server regularly by the terminal; step 4, an optimal broadcasting dispatch result is calculated regularly by a front end dispatch server; and step 5, media content is broadcasted to the terminal by a front end broadcasting server. The information subscribing and information broadcasting method system comprises the front end system and the terminal, wherein the front end system is communicated with the terminal by a one-way network or the two-way network; and the front end system is provided with the statistics server, the dispatch server and the broadcasting server. According to the information subscribing and information broadcasting method system, an information response method of the front end system is improved, a bandwidth allocation method of information subscribing and information broadcasting with diverse types and unequal data size is provided, and the bandwidth allocation method is optimized by a simulated annealing algorithm.
Description
Technical field
The present invention relates to unidirectional network and two-way net integration technology, particularly a kind ofly by front end system content is organized, carry out the system of distribute media content again through unidirectional network to the terminal use according to the mutual subscription information of two-way net.
Background technology
Below be some explanations of nouns in this area, its scope of application only limits to the present invention:
Front end system: digital television system comprises front end system, transmission network and receiving terminal.Front end system is meant in the field of broadcast televisions system of the information of broadcasting to transmission network.
Unidirectional network: can refer to radio network, also can refer to any point-to-multipoint transmission network, like broadcast mode in the Ethernet (the destination host address is complete 1) etc.
Two-way net: can refer to the Internet, also can refer to any point-to-point transmission network, like GPRS etc.
Terminal: insert through unilateral network and bilateral network, obtain the node of relevant information, have a plurality of users on the terminal.
The user: on the terminal as the agency (Agent) or the account number (being ID) of actual user.
The content source descriptor: be the description to available content source, wherein the descriptor in content source and content source I D that is to say what content source the user can subscribe to.
Content source is described request message: be the message that the content source descriptor is initiatively initiated to ask in the terminal; Front end system receives that content source is described behind the request message and can send the content source descriptor, be through unidirectional network send or two-way net send to see near request quantity this moment how much.
User's operation information: be user's " subscription ", " quitting the subscription of " operation, initiate whether response is successful after the front end system by terminal forward end system to content source.
User Status message: be meant the regular forward end report of user self-operating situation, front end can be known user's the situation of enlivening according to this message, if in the time of appointment, still do not receive ruuning situation message, just can suspect and break down or user offline.
HBBTV is the abbreviation of Hybrid Broadcast/Broadband TV, and it is a kind of content release platform compatible with DVB, can signaling be provided, transmit and appear mechanism for strengthening with interactive television services.Based on the related application of mixing the broadcasting broadband, design with internet arena to broadcasting simultaneously, and can have at the same time on the broadcasting terminal that mixing is connected with broadband internet and move.In the issue standard (ETSI TS 102 796V1.1.1 (2010-06)) life cycle of using is defined, comprise starting and end condition.
In " tagging-people powered metadata for social " (2007) one books, liken current New Information Environment to " stream " in (the 19th page of what is tagging chapter why tagging matters joint); Comprise RSS feeds; Microbloggings etc., it is issued information through content source endlessly.Professional for the streamed information services class, this issue standard (ETSI TS 102 796 V1.1.1) has only been described a basic running environment.And under this streaming environment; The user transforms into the subscription operation (or " concern ") to content source to " request-acquisition " operation of content information; Like streaming information promulgating platforms such as microbloggings, the user will be less than the frequency of queried for items to the renewal speed of information source.
In unidirectional network to obviously broadcasting and in the face of the media content data of different business characteristic the time, the problem that service ability can't be distinguished can occurring, particularly under flowing content environment nowadays greater than the data of bandwidth ability.In the prior art; Introduced in the patent of invention " active broadcasting server and broadcasting method thereof " (application number is 200410058557.7) a kind of can be with by the active broadcasting server and the broadcasting method thereof of the client of the higher queried for items active broadcast of enquiry frequency; Use this method can reduce the power consumption of client side waits for response time decreased client user device, can respond the common query demand of most of clients fast.This invention is applicable to that data volume is little, the simple information service of type, is the situation that stock information service, request type are merely stock code or greedy algorithm easy to use like the optimum embodiment in the invention.If consider the media content issue, multiple issue form and type, content description and solicited message will be very complicated, and limited to the treatment effeciency of big data.
Summary of the invention
Technical problem to be solved by this invention provides a kind of inter-network collaborative information subscribing and information distributing method and system, is used to solve information subscribing and the information distributing problem that type is various and data volume does not wait under the streaming environment.
The technical scheme that the present invention solves the problems of the technologies described above is following: information subscribing and information distributing method that a kind of inter-network is collaborative may further comprise the steps:
Tabulation regularly calculates optimum playing and scheduling result according to user's liveness for step 4, front end dispatch server; Here the chronomere in cycle is minute.
On the basis of technique scheme, the present invention can also do following improvement.
Further, said information subscribing and information distributing method also needed execution in step A1 or steps A 2 before execution in step 1:
When steps A 2, terminal were initiatively initiated content source and described request message, front end system sent the content source descriptor through two-way net to the terminal again.Initiatively initiate content source and describe the situation that request message comprises starting up of terminal, and content source is described request message and is comprised ID, solicit operation code, but and the solicit operation code comprise request subscribed content source I D and the current subscribed content of request user source I D.
Here, it is the relevant information that is used to inform the present content source that can subscribe to of user that front end system sends the content source descriptor through unidirectional network or two-way net to the terminal, mainly is content source ID, and the chronomere in cycle is the sky in this step.
Further, front end system when the content source descriptor is sent at the terminal, uses collaborative filtering method through unidirectional network or two-way net, and this method is used to the content source I D that recommends user I D most probable to subscribe to.
Further, the user's operation information in the said step 1 comprises content source I D, user I D and user's operation code, and said user's operation code comprises subscribes to code and quit the subscription of code.
Further, the content source in the said step 2-user's subscription list is used to write down the ID of subscribing to current content source I D.
Further, user's liveness tabulation in the said step 3 is used to write down any active ues I D and enlivens the time at last.
Further, the User Status message in the said step 3 comprises User Status and ID.
Further, the front end dispatch server regularly calculates optimum playing and scheduling result and adopts simulated annealing in the said step 4, specifically may further comprise the steps:
Step 401: produce an allocated bandwidth sequence B at random;
Step 402: select an index value, and select a direction that changes index value;
Step 403: one of them value according to index value change allocated bandwidth sequence B generates a new allocated bandwidth sequence B ＇;
Step 404: the majorized function that calculates B and B ＇ respectively;
Step 405: judge whether new allocated bandwidth sequence B ＇ is better to separate, or trend the critical of optimal solution separated;
Step 406: judge whether to reach temperature threshold, finish,, then reduce temperature, return and execution in step 402 again if do not reach temperature threshold if reach then flow process.
Information subscribing and information distributing system that a kind of inter-network is collaborative comprise front end system and terminal, and said front end system and said terminal be through unidirectional network or two-way Netcom letter, and said front end system is provided with statistical server, dispatch server and broadcasts server;
Said statistical server, it is connected with said terminal through two-way net, is used for receiving terminal transmission user's operation information and User Status message, also is used for statistics of user's subscribed content source information, the user enlivens information; In addition, said statistical server also is used for the content source of receiving terminal transmission and describes request message, and sends the content source descriptor to the terminal;
Said dispatch server, it is arranged on front end system, is used to calculate optimum playing and scheduling result;
The said server of broadcasting, it is connected with said terminal through unidirectional network, is used for the media content of being issued to broadcasting content source, terminal.
On the basis of technique scheme, the present invention can also do following improvement.
Further; Said statistical server comprises the tabulation of content source-user's subscription list, user's liveness and content source-broadcast data list; Said content source-user's subscription list is used to write down the ID of subscribing to current content source ID; The tabulation of said user's liveness is used to write down any active ues ID and enlivens the time at last, and said content source-broadcast data list is used for writing down each media content that current content source I D comprises and does not send data volume.
The invention has the beneficial effects as follows: information subscribing of the present invention and information distributing method and system; The information that reduced is obtained expense; And described information getting method more meets demand and the occupation mode of active user to information service, and the user processing logic is more simplified, and has saved Internet resources.In addition; High and the high content of user's attention rate is broadcast the preferred bandwidth distribution method is provided for the front end system turnover rate; Make the media content issue more efficient; Compare with the information service that issue standard (ETSI TS 102796) provides, it has better adaptive faculty in the polymorphic type information service of big data quantity.Simultaneously; The information distributing method that combines user behavior that the present invention proposes; Through distinguishing the service ability of different business; Be the distribution of bandwidth, both guaranteed real-time preferentially the broadcasting of the content high, that data volume is little that require, guaranteed to require in real time the resource allocation of broadcasting of the content low, that data volume is big again.To sum up; To present streamed information services demand; The present invention improves the message responding method of front end system, proposed to type is various and data volume does not wait the information subscribing and the bandwidth allocation methods of information distributing, and the bandwidth allocation methods of having passed through Simulated Anneal Algorithm Optimize.
Description of drawings
Fig. 1 is the flow chart of information subscribing according to the invention and information distributing method;
Fig. 2 is the flow chart of simulated annealing according to the invention;
Fig. 3 is the structure chart of information subscribing according to the invention and information distributing system;
In the accompanying drawing, the list of parts of each label representative is following:
1, front end system, 2, the terminal, 3, statistical server, 4, dispatch server, 5, broadcast server.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
As shown in Figure 1, information subscribing and information distributing method that the described a kind of inter-network of present embodiment is collaborative may further comprise the steps:
Step 401: produce an allocated bandwidth sequence B at random.B also refers to the available bandwidth percentage of broadcasting of each content source ID here; Be expressed as B (I D), suppose at every turn from high to low, support the calculating of N content source at most according to the active users ordering; It is many more then to cover any active ues, and the content number that can broadcast is The more the better.
Step 402: select an index value, and select a direction that changes index value.
Step 403: one of them value according to index value change allocated bandwidth sequence B generates a new allocated bandwidth sequence B ＇.
Step 404: the majorized function that calculates B and B ＇ respectively.If majorized function is W, the majorized function that B and B ＇ are corresponding is expressed as W (B) and W (B ＇) respectively, can know that the big more broadcasting method of W value is good more.Usually, receive the content source W value meeting of user's attention rate high (booking reader's number of this content source I D is big, and active users is many constantly) big more; Renewal frequency is high, the content source that inner capacities is little (like news category), the W value can be big more).Majorized function is formed by the corresponding majorized function W (content source I D) of each content source I D (being called for short W (I D) down) summation, that is:
W=W（ID1）+W（ID2）…+W（IDN）.
Majorized function W (ID) is input as the active users N (ID) of each content source ID, but this interval this content source ID broadcasting content number of calculating according to content source-broadcast data list.Computing formula is:
W (ID)=active users N (ID) but * broadcasting content number (content source ID)
Here, but the number of broadcasting content is broadcast the content number that data volume (ID) can be broadcast for this.This broadcasts the data volume computing formula:
This broadcasts data volume (ID)=time interval T * broadcast bandwidth B (ID)
Here; But broadcasting content number (content source ID) broadcast that data volume (ID) deducts on the content source ID successively for this each treat the broadcasting content data volume; Up to if then this broadcasts that data volume (ID) uses up or with surpassing, then last is got reality and can broadcast percentage calculation deducting complete broadcasting content data.
Step 405: judge whether new allocated bandwidth sequence B ＇ is better to separate, or trend the critical of optimal solution separated.
Step 406: judge whether to reach temperature threshold, finish,, then reduce temperature, return and execution in step 402 again if do not reach temperature threshold if reach then flow process.
Before carrying out above-mentioned steps, also preparation need be arranged, execution in step A1 or steps A 2:
Steps A 1, front end system periodically sends the content source descriptor through unidirectional network or two-way net on the terminal;
When steps A 2, terminal were initiatively initiated content source and described request message, front end system sent the content source descriptor through two-way net to the terminal.Initiatively initiate content source and describe the situation that request message comprises starting up of terminal, and content source is described request message and is comprised ID, solicit operation code, but and the solicit operation code comprise request subscribed content source I D and the current subscribed content of request user source I D.
Front end system when the content source descriptor is sent at the terminal, uses collaborative filtering method through unidirectional network or two-way net, is used to the content source ID that recommends user I D most probable to subscribe to.
Here, it is the relevant information that is used to inform the present content source that can subscribe to of user that front end system sends the content source descriptor through unidirectional network or two-way net to the terminal, mainly is content source ID, and the chronomere in cycle is the sky in this step.
As shown in Figure 3; According to said method; Information subscribing and information distributing system that a kind of inter-network in the present embodiment is collaborative; Comprise front end system 1 and terminal 2, and said front end system 1 passes through unidirectional network with said terminal 2 or two-way Netcom believes, and said front end system 1 is provided with statistical server 3, dispatch server 4 and broadcasts server 5;
Said statistical server 3; It is connected with said terminal 2 through two-way net; Be used to send the content source descriptor, and receiving terminal sends content source and describe request message, user's operation information, User Status message, also be used for statistics of user's subscribed content source information, the user enlivens information.Statistical server 3 described here comprises the tabulation of content source-user's subscription list, user's liveness and content source-broadcast data list; Said content source-user's subscription list is used to write down the ID of subscribing to current content source I D; The tabulation of said user's liveness is used to write down any active ues I D and enlivens the time at last, and said content source-broadcast data list is used for writing down each media content that current content source I D comprises and does not send data volume.
Said dispatch server 4, it is arranged on front end system 1, is the computer type server, is used to calculate optimum playing and scheduling result;
The said server 5 of broadcasting, it is connected with said terminal 2 through unidirectional network, is used for the media content of being issued to broadcasting content source, terminal.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an information subscribing and the information distributing method that inter-network is collaborative is characterized in that, may further comprise the steps:
Step 1, the terminal is through the two-way net forward end transmission user of system operation information;
Step 2, front end statistical server be according to user's operation information update content source-user's subscription list, and will upgrade the result and generate response message and send to the terminal;
Step 3, terminal forward end statistical server regularly sends User Status message, and the front end statistical server obtains User Status message, and upgrades the tabulation of user's liveness;
Tabulation regularly calculates optimum playing and scheduling result according to user's liveness for step 4, front end dispatch server;
Step 5, front end are broadcast server through unidirectional network, and broadcast media content according to the playing and scheduling result of optimum to the terminal.
2. information subscribing according to claim 1 and information distributing method is characterized in that, said information subscribing and information distributing method also needed execution in step A1 or steps A 2 before execution in step 1:
Steps A 1, front end system periodically sends the content source descriptor to the terminal through unidirectional network or two-way net;
Steps A 2, terminal initiatively forward end system initiation content source are described request message, and front end system sends the content source descriptor through two-way net to the terminal again.
3. information subscribing according to claim 2 and information distributing method is characterized in that, front end system uses collaborative filtering method through unidirectional network or two-way net when the content source descriptor is sent at the terminal.
4. information subscribing according to claim 1 and information distributing method is characterized in that, the user's operation information in the said step 1 comprises content source I D, user I D and user's operation code, and said user's operation code comprises subscribes to code and quit the subscription of code.
5. information subscribing according to claim 1 and information distributing method is characterized in that, said content source-user's subscription list is used to write down the user I D that subscribes to current content source I D.
6. information subscribing according to claim 1 and information distributing method is characterized in that, the tabulation of said user's liveness is used to write down any active ues ID and enlivens the time at last.
7. information subscribing according to claim 1 and information distributing method is characterized in that, the User Status message in the said step 3 comprises User Status and user I D.
8. information subscribing according to claim 1 and information distributing method is characterized in that, the front end dispatch server regularly calculates optimum playing and scheduling result and adopts simulated annealing in the said step 4, specifically may further comprise the steps:
Step 401: produce an allocated bandwidth sequence B at random;
Step 402: select an index value, and select a direction that changes index value;
Step 403: one of them value according to index value change allocated bandwidth sequence B generates a new allocated bandwidth sequence B ＇;
Step 404: the majorized function that calculates B and B ＇ respectively;
Step 405: judge whether new allocated bandwidth sequence B ＇ is better to separate, or trend the critical of optimal solution separated;
Step 406: judge whether to reach temperature threshold, finish,, then reduce temperature, return and execution in step 402 again if do not reach temperature threshold if reach then flow process.
9. collaborative information subscribing and the information distributing system of an inter-network; It is characterized in that; Comprise front end system and terminal, said front end system and said terminal are through unidirectional network or two-way Netcom letter, and said front end system is provided with statistical server, dispatch server and broadcasts server;
Said statistical server, it is connected with said terminal through two-way net, is used for the user's operation information and the User Status message of receiving terminal transmission, also is used for statistics of user's subscribed content source information, the user enlivens information;
Said dispatch server, it is arranged on front end system, is used to calculate optimum playing and scheduling result;
The said server of broadcasting, it is connected with said terminal through unidirectional network, is used for broadcasting media content to the terminal.
10. information subscribing according to claim 9 and information distributing system is characterized in that, said statistical server comprises the tabulation of content source-user's subscription list, user's liveness and content source-broadcast data list;
Said content source-user's subscription list is used to write down the ID of subscribing to current content source I D;
The tabulation of said user's liveness is used to write down any active ues ID and enlivens the time at last;
Said content source-broadcast data list is used for writing down each media content that current content source ID comprises and does not send data volume.
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