CN102802047B - The information subscribing that a kind of inter-network is collaborative and information delivery method and system - Google Patents
The information subscribing that a kind of inter-network is collaborative and information delivery method and system Download PDFInfo
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Abstract
The present invention relates to the collaborative information subscribing of a kind of inter-network and information delivery method and system, said method comprising the steps of: step 1, terminal sends user's operation information by Two-way Network forward end system; Step 2, front end statistical server upgrades content source-user subscription list; Step 3, terminal forward end statistical server regularly sends User Status message; Step 4, front end dispatch server regularly calculates optimum playing and scheduling result; Step 5, front end is broadcast server and is broadcast media content to terminal. Described system comprises front end system and terminal, and front end system is communicated by letter by unidirectional network or Two-way Network with terminal, and front end system is provided with statistical server, dispatch server and broadcasts server. The present invention improves the message responding method of front end system, has proposed information subscribing not etc. of and data volume various for type and the bandwidth allocation methods of information distributing, and by Simulated Anneal Algorithm Optimize bandwidth allocation methods.
Description
Technical field
The present invention relates to unidirectional network and Two-way Network integration technology, particularly one is subscribed to alternately according to Two-way NetworkInformation, is organized content by front end system, then carries out media content by unidirectional network to terminal useThe system of distribution.
Background technology
Be below 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 systemSystem refers to system from field of broadcast televisions to transmission network that broadcast information in.
Unidirectional network: can refer to radio network, also can refer to any point-to-multipoint transmission network, in EthernetBroadcast mode (destination host address is complete 1) etc.
Two-way Network: can refer to internet, also can refer to any point-to-point transmission network, as GPRS etc.
Terminal: by unilateral network and bilateral network access, obtain the node of relevant information, a terminalOn may have multiple users.
User: in terminal as agency (Agent) or the account number (being ID) of actual user.
Content source descriptor: be the description to available content source, the wherein descriptor in content sourceWith content source ID, that is to say what content source user can subscribe to.
Content source is described request message: be the message that terminal initiatively initiates to ask for content source descriptor, and frontEnd system is received after content source is described request message can send content source descriptor, is to send out by unidirectional networkReturn be Two-way Network send to see near request quantity this moment number.
User's operation information: be user's " subscription ", " quitting the subscription of " operation to content source, by terminal forwardEnd system is initiated, and after front end system, whether response is successful.
User Status message: refer to the regular forward end report of user self-operating situation, front end can be according to thisMessage is known user's the situation of enlivening, if still do not receive ruuning situation message within the time of specifying,Just can suspect and break down or user offline.
HBBTV is the abbreviation of HybridBroadcast/BroadbandTV, and it is one and DVBCompatible content distribution platform, can be for strengthening and interactive television services provides signaling, transmits and presentsMechanism. Based on the related application of mixing broadcast broadband, design for broadcast and internet arena simultaneously,And can have at the same time broadcast mix in the terminal being connected and move with broadband internet. Issue standardIn (ETSITS102796V1.1.1 (2010-06)), the life cycle of application is defined,Comprise and starting and end condition.
In " tagging-peoplepoweredmetadataforsocial " (2007) one booksIn (the 19th page whatistagging chapter whytaggingmatters joint) by current new letterBreath environment is likened " stream " to, comprises RSSfeeds, microblogging etc., and it is not by content source to information in a steady streamDisconnected issue. For streamed information services class business, this issue standard (ETSITS102796V1.1.1)A basic running environment has only been described. And under this streaming environment, user " please to content informationAsk-obtain " operate the subscription operation (or " concern ") transforming into content source, as streamings such as microbloggingsInformation promulgating platform, user will be less than the frequency of queried for items to the renewal speed of information source.
In unidirectional network, to being obviously greater than, the data of bandwidth ability are broadcast and facing different business spyWhen the media content data of property, the problem that there will be service ability to distinguish, particularly in streaming nowadaysUnder content environment. In the prior art, patent of invention " active broadcasting server and broadcasting method thereof "In (application number is 200410058557.7), introduce and a kind ofly can will be queried the queried for items that frequency is higherInitiatively active broadcasting server and the broadcasting method thereof of the client of broadcast, uses the method to reduceThe power consumption of client side wait-for-response time decreased client user device, can respond most of clients altogether fastSame query demand. This invention is applicable to that data volume is little, the simple information service of type, as in inventionExcellent embodiment is that stock information service, request type are only stock code or greedy algorithm easy to useSituation. If consider media content issue, multiple issue form and type, content description and solicited message willVery complicated, and limited to the treatment effeciency of large data.
Summary of the invention
Technical problem to be solved by this invention is to provide the collaborative information subscribing of a kind of inter-network and information is broadcastForwarding method and system, for solving the various and data volume of streaming environment Types Below information subscribing and letter not etc.Breath is broadcast problem.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: the collaborative information subscribing of a kind of inter-network withInformation delivery method, comprises the following steps:
Step 1, terminal sends user operation information by Two-way Network forward end system, as subscribed content source,Quit the subscription of content source.
Step 2, front end statistical server upgrades content source-user subscription list according to user's operation information,And renewal result generation response message is issued to terminal; The response message here refers to that front end system receives useAfter the operation information of family, inform whether user responds successful.
Step 3, terminal forward end statistical server regularly sends User Status message, the service of front end statisticsDevice obtains User Status message, and upgrades the list of user's liveness; The User Status of obtaining in this step disappearsBreath is mainly current time and ID, and the chronomere in cycle is minute, as 10 minutes, and front endThe list of system statistics server update user liveness.
Step 4, front end dispatch server adopt simulated annealing according to user's liveness list regularly countCalculate optimum playing and scheduling result; Here the chronomere in cycle is minute.
Step 5, front end is broadcast server and is broadcast to terminal according to optimum playing and scheduling result by unidirectional networkSend out media content.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described information subscribing and information delivery method also needed execution step before execution step 1A1 or steps A 2:
Steps A 1, front end system sends content by unidirectional network or Two-way Network periodicity to the terminal in terminalSource Description information;
Steps A 2, when terminal is initiatively initiated content source and described request message, front end system passes through Two-way Network againSend content source descriptor to terminal. Initiatively initiating content source describes request message and comprises starting up of terminalSituation, and content source describes request message and comprises ID, solicit operation code, and solicit operation codeComprise that request can subscribed content source ID and the current source ID of subscribed content of request user.
Here, front end system by unidirectional network or Two-way Network to terminal send content source descriptor be forThe relevant information of informing the current content source that can subscribe to of user, is mainly content source ID, and week in this stepThe chronomere of phase is sky.
Further, when front end system sends content source descriptor by unidirectional network or Two-way Network to terminal,Use collaborative filtering method, the content source ID of the method for recommending ID most probable to subscribe to.
Further, the user's operation information in described step 1 comprises content source ID, ID and userOperation code, described user's operation code comprises subscribes to code and quits the subscription of code.
Further, the content source-user subscription list in described step 2, for record subscribe to current inThe ID of appearance source ID.
Further, user's liveness list in described step 3, for recording any active ues ID and lastEnliven the time.
Further, the User Status message in described step 3 comprises User Status and ID.
Further, in described step 4, front end dispatch server regularly calculates optimum playing and scheduling resultBe to adopt simulated annealing, specifically comprise the following steps:
Step 401: produce at random an allocated bandwidth sequence B;
Step 402: select an index value, and select a direction that changes index value;
Step 403: change one of them value of allocated bandwidth sequence B according to index value, generate one newlyAllocated bandwidth sequence B ＇;
Step 404: the majorized function that calculates respectively B and B ＇;
Step 405: judge whether new allocated bandwidth sequence B ＇ is better solution, or trend optimal solutionCritical solution;
Step 406: judge whether to reach temperature threshold, finish if reach flow process, if do not reach temperatureDegree threshold value, reduces temperature, returns and again performs step 402.
The information subscribing that inter-network is collaborative and an information distributing system, comprise front end system and terminal, and instituteState front end system and communicate by letter by unidirectional network or Two-way Network with described terminal, and described front end system is provided with systemCount server, dispatch server and broadcast server;
Described statistical server, it is connected with described terminal by Two-way Network, sends and uses for receiving terminalFamily operation information and User Status message, also for counting user subscribed content source information, the active letter of userBreath; In addition, the content source that described statistical server also sends for receiving terminal is described request message, andSend content source descriptor to terminal;
Described dispatch server, it is arranged on front end system, for adopting simulated annealing to calculateExcellent playing and scheduling result;
The described server of broadcasting, it is connected with described terminal by unidirectional network, for to terminal broadcasting contentThe media content that issue in source.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described statistical server comprises content source-user subscription list, the list of user's livenessAnd content source-broadcast data list, described content source-user subscription list be used for recording subscribe to current inThe ID of appearance source ID, when the list of described user's liveness is used for recording any active ues ID and finally enlivensBetween, described content source-broadcast data list is in the each media that record current content source ID and compriseRong Wei sends data volume.
The invention has the beneficial effects as follows: information subscribing of the present invention and information delivery method and system,Reduced acquisition of information expense, and described information getting method more meets active user to information serviceDemand and occupation mode, user's processing logic is more simplified, and has saved Internet resources. In addition, for front endSystem update rate height and the high content of user's attention rate are broadcast preferred bandwidth distribution method are provided, and make mediaContent is issued more efficient, compares with the information service that issue standard (ETSITS102796) provides,It has better adaptive faculty in the polymorphic type information service of big data quantity. Meanwhile, the present invention proposesAn information delivery method in conjunction with user behavior, by distinguishing the service ability of different business, i.e. bandWide distribution, had both ensured preferentially broadcasting of requirement of real time is high, data volume is little content, had ensured again realityThe content that Shi Yaoqiu is low, data volume is large broadcast resource allocation. To sum up, for current streamed information servicesDemand, the present invention improves the message responding method of front end system, has proposed for type variousAnd information subscribing not etc. of data volume and the bandwidth allocation methods of information distributing, and by simulated annealingOptimize bandwidth allocation methods.
Brief description of the drawings
Fig. 1 is the flow chart of information subscribing of the present invention and information delivery method;
Fig. 2 is the flow chart of simulated annealing of the present invention;
Fig. 3 is the structure chart of information subscribing of the present invention and information distributing system;
In accompanying drawing, the list of parts of each label representative is as follows:
1, front end system, 2, terminal, 3, statistical server, 4, dispatch server, 5, broadcast clothesBusiness device.
Detailed description of the invention
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example is only for explaining thisInvention, is not intended to limit scope of the present invention.
As shown in Figure 1, collaborative information subscribing and the information delivery method of a kind of inter-network described in the present embodiment,Comprise the following steps:
Step 1, terminal sends user's operation information by Two-way Network forward end system. User's operation informationComprise content source ID, ID and user's operation code, and described user's operation code comprises subscription generationCode and quit the subscription of code. Here, user's operation information that is to say a kind of operation behavior letter of user to content sourceBreath, as subscribed content source, quit the subscription of content source, subscribes to and cancels subscriptions as adding in RSS reader,And for example adding in microblogging, is paid close attention to and cancels and paying close attention to.
Step 2, front end 1 statistical server upgrades content source-user subscription list, and result is rawBecome response message to issue terminal, after the response message here refers to that front end system is received user's operation informationInform that user responds whether success, content source-user subscription list be for record subscribe to current inThe ID of appearance source ID.
Step 3, terminal forward end statistical server regularly sends User Status message, the service of front end statisticsDevice obtains current time, extracts ID, and upgrades the list of user's liveness. The User Status here disappearsBreath comprises User Status and ID, and the list of user's liveness is used for recording any active ues ID and lastEnliven the time.
Step 4, front end dispatch server is according to the list of user's liveness, and adopts simulated annealing fixedPhase calculates optimum playing and scheduling result, and the chronomere in cycle is minute here, as shown in Figure 2,Specifically comprise the following steps:
Step 401: produce at random an allocated bandwidth sequence B. B also refers to each content source ID hereThe available bandwidth percentage of broadcasting, be expressed as B (ID), suppose to sort by height according to active users at every turnTo low, support at most the calculating of N content source, cover any active ues more, the content that can broadcastNumber is The more the better.
Step 402: select an index value, and select a direction that changes index value.
Step 403: change one of them value of allocated bandwidth sequence B according to index value, generate one newlyAllocated bandwidth sequence B ＇.
Step 404: the majorized function that calculates respectively B and B ＇. If majorized function is W, B and B ＇ coupleThe majorized function of answering is expressed as W (B) and W (B ＇), and the larger broadcasting method of known W value is better. OneAs, being subject to user's attention rate, high (booking reader's number of this content source ID is large, and this moment any active uesNumber many) content source W value understand larger; Renewal frequency is high, the content source (as news category) that inner capacities is little,W value can be larger). Majorized function by majorized function W (content source ID) corresponding to each content source ID (underBe called for short W (ID)) suing for peace forms, 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, according to contentThis interval this content source ID that source-broadcast data list is calculated can broadcasting content number. Computing formula is:
W (ID)=active users N (ID) × can broadcasting content number (content source ID)
Here number that, can broadcasting content broadcasts for this content number that data volume (ID) can be broadcast.This broadcasts data volume computing formula:
This broadcasts data volume (ID)=time interval T × broadcast bandwidth B (ID)
Here can broadcasting content number (content source ID) broadcasting data volume (ID) for this, deducts successivelyEach broadcasting content data volume for the treatment of on content source ID, if until deducting a complete broadcasting content numberAccording to this broadcasts that data volume (ID) is finished or with super, last is got reality and can broadcast percentage meterCalculate.
Step 405: judge whether new allocated bandwidth sequence B ＇ is better solution, or trend optimal solutionCritical solution.
Step 406: judge whether to reach temperature threshold, finish if reach flow process, if do not reach temperatureDegree threshold value, reduces temperature, returns and again performs step 402.
Step 5, according to optimum playing and scheduling result, front end is broadcast server and is broadcast matchmaker by unidirectional networkBody content.
Before carrying out above-mentioned steps, also need preparation, execution step A1 or steps A 2:
Steps A 1, front end system periodically sends content source description by unidirectional network or Two-way Network in terminalInformation;
Steps A 2, when terminal is initiatively initiated content source and is described request message, front end system by Two-way Network toTerminal sends content source descriptor. Initiatively initiate content source and describe the feelings that request message comprises starting up of terminalCondition, and content source describes request message and comprises ID, solicit operation code, and solicit operation code packagesThe request of drawing together can subscribed content source ID and the current source ID of subscribed content of request user.
When front end system sends content source descriptor by unidirectional network or Two-way Network to terminal, use collaborativeFilter method, for the content source ID that recommends ID most probable to subscribe to.
Here, front end system by unidirectional network or Two-way Network to terminal send content source descriptor be forThe relevant information of informing the current content source that can subscribe to of user, is mainly content source ID, and week in this stepThe chronomere of phase is sky.
As shown in Figure 3, according to said method, the collaborative information subscribing of a kind of inter-network in the present embodiment withInformation distributing system, comprises front end system 1 and terminal 2, and described front end system 1 and described terminal 2By unidirectional network or Two-way Network communication, and described front end system 1 is provided with statistical server 3, scheduling clothesBusiness device 4 and broadcast server 5;
Described statistical server 3, it is connected with described terminal 2 by Two-way Network, for sending content sourceDescriptor, and receiving terminal transmission content source is described request message, user's operation information, User StatusMessage, also enlivens information for counting user subscribed content source information, user. Statistics service described hereDevice 3 comprises content source-user subscription list, the list of user's liveness and content source-broadcast data list,Described content source-user subscription list is for recording the ID of subscribing to current content source ID, described useFamily liveness list is used for recording any active ues ID and finally enlivens the time, described content source-broadcast numberDo not send data volume according to list for recording each media content that current content source ID comprises.
Described dispatch server 4, it is arranged on front end system 1, is computer type server, for meterCalculate optimum playing and scheduling result;
The described server 5 of broadcasting, it is connected with described terminal 2 by unidirectional network, for broadcasting to terminalThe media content that content source is issued.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, not all in the present inventionSpirit and principle within, any amendment of doing, be equal to replacement, improvement etc., all should be included in thisWithin bright protection domain.
Claims (9)
1. collaborative information subscribing and the information delivery method of inter-network, is characterized in that, comprises followingStep:
Step 1, terminal sends user's operation information by Two-way Network forward end system;
Step 2, front end statistical server upgrades content source-user subscription list according to user's operation information,And renewal result generation response message is sent to terminal;
Step 3, terminal forward end statistical server regularly sends User Status message, the service of front end statisticsDevice obtains User Status message, and upgrades the list of user's liveness;
Step 4, front end dispatch server adopt simulated annealing according to user's liveness list regularly countCalculate optimum playing and scheduling result;
Step 5, front end is broadcast server by unidirectional network, and according to optimum playing and scheduling result to endEnd is broadcast media content;
In described step 4, adopt simulated annealing to calculate optimum playing and scheduling result, specifically compriseFollowing steps:
Step 401: produce at random an allocated bandwidth sequence B;
Step 402: select an index value, and select a direction that changes index value;
Step 403: change one of them value of allocated bandwidth sequence B according to index value, generate one newlyAllocated bandwidth sequence B ＇;
Step 404: the majorized function that calculates respectively B and B ＇;
Step 405: judge whether new allocated bandwidth sequence B ＇ is better solution, or trend optimal solutionCritical solution;
Step 406: judge whether to reach temperature threshold, finish if reach flow process, if do not reach temperatureDegree threshold value, reduces temperature, returns and again performs step 402.
2. information subscribing according to claim 1 and information delivery method, is characterized in that, instituteState information subscribing and information delivery method and before execution step 1, also need to perform step A1 or steps A 2:
Steps A 1, front end system periodically sends content source to terminal by unidirectional network or Two-way Network and describesInformation;
Steps A 2, terminal initiatively forward end system initiation content source is described request message, and front end system is logical againCross Two-way Network and send content source descriptor to terminal.
3. information subscribing according to claim 2 and information delivery method, is characterized in that, frontEnd system uses collaborative filtering side by unidirectional network or Two-way Network in the time that terminal sends content source descriptorMethod.
4. information subscribing according to claim 1 and information delivery method, is characterized in that, instituteUser's operation information of stating in step 1 comprises content source ID, ID and user's operation code, described inUser's operation code comprises subscribes to code and quits the subscription of code.
5. information subscribing according to claim 1 and information delivery method, is characterized in that, instituteState content source-user subscription list, for recording the ID of subscribing to current content source ID.
6. information subscribing according to claim 1 and information delivery method, is characterized in that, instituteState the list of user's liveness, for recording any active ues ID and finally enlivening the time.
7. information subscribing according to claim 1 and information delivery method, is characterized in that, instituteThe User Status message of stating in step 3 comprises User Status and ID.
8. collaborative information subscribing and the information distributing system of inter-network, is characterized in that, comprises front endSystem and terminal, described front end system is communicated by letter by unidirectional network or Two-way Network with described terminal, and before describedEnd system is provided with statistical server, dispatch server and broadcasts server;
Described statistical server, it is connected with described terminal by Two-way Network, sends for receiving terminalUser's operation information and User Status message, also enliven for counting user subscribed content source information, userInformation;
Described dispatch server, it is arranged on front end system, for adopting simulated annealing to calculateExcellent playing and scheduling result;
The described server of broadcasting, it is connected with described terminal by unidirectional network, for broadcasting media to terminalContent;
Adopt simulated annealing to calculate optimum playing and scheduling result, specifically comprise the following steps:
Step 401: produce at random an allocated bandwidth sequence B;
Step 402: select an index value, and select a direction that changes index value;
Step 403: change one of them value of allocated bandwidth sequence B according to index value, generate one newlyAllocated bandwidth sequence B ＇;
Step 404: the majorized function that calculates respectively B and B ＇;
Step 405: judge whether new allocated bandwidth sequence B ＇ is better solution, or trend optimal solutionCritical solution;
Step 406: judge whether to reach temperature threshold, finish if reach flow process, if do not reach temperatureDegree threshold value, reduces temperature, returns and again performs step 402.
9. information subscribing according to claim 8 and information distributing system, is characterized in that, instituteState statistical server and comprise content source-user subscription list, the list of user's liveness and content source-broadcastData list;
Described content source-user subscription list, for recording the ID of subscribing to current content source ID;
The list of described user's liveness, for recording any active ues ID and finally enlivening the time;
Described content source-broadcast data list is in the each media that record current content source ID and compriseRong Wei sends data volume.
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| US10701038B2 (en) * | 2015-07-27 | 2020-06-30 | Cisco Technology, Inc. | Content negotiation in a content centric network |
| CN105791910B (en) * | 2016-03-08 | 2019-02-12 | 北京四达时代软件技术股份有限公司 | A kind of multimedia resource supplying system and method |
| WO2017200512A1 (en) * | 2016-05-17 | 2017-11-23 | Bitlume Inc. | System and method for an interactive live streaming media platform to limited subscribers |
| CN115186198B (en) * | 2022-09-09 | 2022-12-20 | 中国中金财富证券有限公司 | Stock market pushing method and related device |
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