CN101150713A - VoD system and method for realizing VoD based on system - Google Patents
VoD system and method for realizing VoD based on system Download PDFInfo
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Abstract
The invention discloses a video program order system and a method for ordering video, comprising a metropolitan area network medium system and a premise network medium system, wherein, the metropolitan area network medium system comprises a central medium server CMS, a plurality of medium distributing buffer crunode MDC and a plurality of edge medium server EMS, which are connected peer-to-peer with each other through P2P; the premise network medium system comprises EMS and a plurality of medium terminals HMT, which are connected peer-to-peer with each other through P2P. EMS stores medium data in definite proportions and all head leaders of VOD programs; HTM adopts P2P mechanism, inquiries data sources to EMS, adopts a mode of multistage inquiry together. Combining traditional C/S connection mode with a P2P peer-to-peer connection mode, a P2PVOD service structure with complemental superiority and perfect performance is formed. The invention is simple and practical, which is mainly applied to the computer communication field, as well as other communication fields.
Description
Technical field
The present invention relates to a kind of computer communication technology, relate in particular to the method for a kind of video on-demand system and realization video request program thereof.
Background technology
Traditional VOD (video request program) adopts C/S (client/server) connection mode to provide program request (comprising VOD and time-moving television) professional.Because the restriction of I/O (server I/O) " bottleneck ", a station server can only be supported limited concurrent stream (the concurrent streams of thousand orders of magnitude).Solve the problem that watch simultaneously at 100,000, hundred general-purpose families, not only need a large amount of servers, also need the extremely wide network bandwidth.Client has become " bottleneck " of restriction VOD development.
At present, solution is that architecture develops to the reciprocity connection mode of P2P (point-to-point).The P2P technology is combined into a network with many users, shares bandwidth wherein, the common information of handling wherein.Different with traditional Client, in the P2P working method, each client terminal be client computer be again server.With the sharing download file is example, downloads the fragment that each user terminal among numerous users of same file only needs file in download, intercourses then, and finally each user obtains complete file.
In traditional P2P peer-to-peer network, media data is present in the terminal hard disk of dispersion, and the media data of whole network distributes by the LIST SERVER unified management.The user searches program by portal website and indicates, and finds this medium place terminal by LIST SERVER, sets up unicast channel then and obtains media data, downloads descramble key through behind the Certificate Authority, finally realizes the VOD function.But online user number more after a little while, and simple P2P pattern can't provide service guarantees, and the user can't obtain real VOD service.
Summary of the invention
The purpose of this invention is to provide a kind of simple and practical VOD (video request program) system and pass through the method that this system realizes video request program, traditional C/S (client/server) connection mode and the reciprocity connection mode of P2P (point-to-point) are combined the P2P VOD service structure that formation is had complementary advantages, performance is complete.
The objective of the invention is to be achieved through the following technical solutions:
Video on-demand system of the present invention, by the operation support system support, described operation support system provides video traffic for video on-demand system, and described video on-demand system comprises metropolitan area network media system and at least one residence network media system, wherein,
Described metropolitan area network media system comprises center media server CMS, a plurality of distribution of media buffer memory node MDC and a plurality of edge media server EMS, is connected by point-to-point P2P equity between described CMS and a plurality of MDC and between each MDC and a plurality of EMS, described a plurality of MDC each other, a plurality of EMS passes through the reciprocity connection of P2P each other;
Described each residence network media system comprises EMS and a plurality of media termination HMT, is connected by the P2P equity between described EMS and a plurality of HMT, and described a plurality of HMT are each other by the connection of P2P equity.
Be connected by the P2P equity between described CMS and a plurality of EMS.
The operating process of described EMS comprises,
EMS preserves the certain proportion media data, and the head of all VOD programs;
EMS adopts P2P mechanism, downloads required media data to the CMS inquiry and from the metropolitan area network data source;
After EMS, MDC media data change, notice CMS.
The operating process of described HMT comprises,
HMT adopts P2P mechanism, to EMS data query source, and downloads required media data from the residence network data source;
HMT preserves institute's data downloaded, and after the local data of HMT changes, notice EMS; The operating state of HMT regularly circular is given EMS, and EMS can inquire about its operating state to HMT.
The present invention may further comprise the steps by the method for above-mentioned video on-demand system realization video request program:
A, HMT are to operation support system request authentication and mandate; If authentication and/or mandate are not passed through, then stop video request program; Pass through if authorize, then carry out step:
B, HMT tabulate to EMS data query source;
C, EMS at first carry out the data source inquiry from local residence network, if there are data this locality, then EMS carries out the rendition list processing to the data source of inquiry, and carries out step D;
If local free of data is then carried out step e;
D, EMS provide data by local residence network to HMT; HMT receives data, broadcast program, and program request finishes;
E, EMS tabulate to CMS data query source;
F, EMS provide data by other residence network in metropolitan area network or the metropolitan area network to HMT; HMT receives data, broadcast program, and program request finishes.
Described steps A comprises:
A1, HMT send authentication request to service portal SP;
A2, SP carry out authentication operation to HMT, if authentication is not passed through, then stop program request; If authentication is passed through, then carry out step:
A3, HMT download head data and broadcast from EMS, send authorization requests to system for numeral copyright management DRMS simultaneously;
A4, DRMS carry out Authorized operation to HMT, if authorize not by or HMT do not accept mandate, then stop program request; Pass through if authorize, then carry out step B.
Described step D and/or step F also comprise,
If HMT does not receive whole request msgs, then proceed step C;
Also comprise HMT normal shutdown flow process after described step D and/or the step F, described HMT normal shutdown flow process comprises step:
G, HMT send the data segment updating message to EMS; EMS receives after the message more new database;
H, HMT shutdown, and to EMS transmission shutdown message;
Also comprise HMT start flow process before the described steps A, described HMT start flow process comprises step:
A-1, HMT send log-on message to EMS;
A-2, EMS inquiry is the update mode database also, and returns acknowledge message to HMT.
When the HMT described in the described step B tabulates to EMS data query source, adopt mode of multistage inquiry together.
As seen from the above technical solution provided by the invention, XXXX of the present invention, owing to comprise metropolitan area network media system and residence network media system, wherein the metropolitan area network media system comprises center media server CMS, a plurality of distribution of media buffer memory node MDC and a plurality of edge media server EMS, connects by the P2P equity each other; The residence network media system comprises EMS and a plurality of media termination HMT, connects by the P2P equity each other.EMS preserves the certain proportion media data, and the head of all VOD programs; HMT adopts P2P mechanism, to EMS data query source, adopts mode of multistage inquiry together.Traditional C/S connection mode and P2P equity connection mode are combined the P2P VOD service structure that formation is had complementary advantages, performance is complete.Simple and practical, be mainly used in computer communication field, also be suitable for and other communications field.
Description of drawings
Fig. 1 is the system block diagram of video on-demand system of the present invention;
Fig. 2 realizes the method flow diagram of video request program for the present invention;
Fig. 3 realizes the method flow diagram of video request program when for local residence network data being arranged;
When being local residence network free of data, realizes Fig. 4 the method flow diagram of video request program;
Fig. 5 is a HMT normal shutdown flow chart;
Fig. 6 is a HMT skip before operational flowchart;
Fig. 7 jumps operational flowchart for behind the HMT;
Fig. 8 is a HMT opening initialization flow chart;
Fig. 9 is newly-increased HMT flow chart;
Figure 10 is HMT login door flow chart.
Embodiment
The preferable embodiment of video on-demand system of the present invention comprises metropolitan area network media system and three residence network media systems as shown in Figure 1, and wherein, the residence network media system can have a plurality of, but has one at least.
Provide video traffic by operation support system for video on-demand system, operation support system comprises
MPC (medium processing center: Multimedia Process Center): be used at the uniform requirement of CNGI (CNGI) video multimedia business for media formats, set up the processing of effective video multimedia-on-demand program Unified coding, conversion platform, and can be by this platform input index information corresponding with program;
SP (service portal: Service Poretal): be used for providing the personalized portals service to CNGI user according to the content and the contents such as user profile and user's ordering information of video frequency program;
BOSS (OSS: Business Operation Support System): be the back-up system of client of operator resource, professional expansion, comprise client management system, business management system, resource management system;
DRMS (digital version management system: Digital Rights Management System): realize the secure distribution of media content on the network, protection content owner's legitimate rights and interests.
And system network management etc.
Described metropolitan area network media system comprises CMS (center media server), MDC (a plurality of distribution of media buffer memory node) and EMS (a plurality of edge media server), is connected by P2P (point-to-point) equity between described CMS and a plurality of MDC and between each MDC and a plurality of EMS, described a plurality of MDC each other, a plurality of EMS passes through the reciprocity connection of P2P each other;
Described each residence network media system comprises EMS and a plurality of HMT (media termination), is connected by the P2P equity between described EMS and a plurality of HMT, and described a plurality of HMT are each other by the connection of P2P equity.Be connected by the P2P equity between described CMS and a plurality of EMS.
This architecture combines traditional VOD center distribution mode and P2P model, forms the complete P2PVOD service structure of mutual supplement with each other's advantages performance.
Its characteristics are that the storage and the ways of distribution of media content: CMS (center media server) stores all media datas originally, and its data are distributed to EMS (edge media server) by MDC (distribution of media buffer memory node).CMS, MDC and EMS form the first order of P2PVOD media store, be metropolitan area network P2P distribute media content and service system, EMS provides P2P program request and directory service to the HMT in the residence network, HMT provides one the road to transmit when carrying out VOD, EMS and HMT have constituted the second level that the P2PVOD medium store like this, and promptly residence network P2P media content is transmitted and service system.These medium store with the entity of distribution and not only can be connected with layer foundation equity, can also stride layer and set up the equity connection as required.
The operating process of above-mentioned EMS mainly comprises,
EMS preserves the certain proportion media data, and the head of all VOD programs;
EMS adopts P2P mechanism, downloads required media data by DS (LIST SERVER) to the CMS inquiry and from the metropolitan area network data source;
After EMS, MDC media data change, notice CMS.
The operating process of above-mentioned HMT mainly comprises,
HMT adopts P2P mechanism, to EMS data query source, and downloads required media data from the residence network data source;
HMT preserves institute's data downloaded, and after the local data of HMT changes, notice EMS;
The operating state of HMT regularly circular is given EMS, and EMS can inquire about its operating state to HMT.
The present invention is by the method for above-mentioned video on-demand system realization video request program, and concrete execution mode as shown in Figure 2, may further comprise the steps:
If local free of data then carry out step 25;
In this step 26, if HMT does not receive whole request msgs, then proceed step 23, up to receiving whole request msgs.
In the method for above-mentioned realization video request program, the head data are downloaded with broadcast and are carried out simultaneously, and carry out the inquiry of follow-up data source simultaneously; HMT sends the query requests of data source, may comprise the request of a plurality of data segments, adopts mode of multistage inquiry together.
Residence network is divided into that data to be arranged and do not have data are situations in two; And the flow process of an authentication and authorization is at first arranged, if authentication or authorize and do not pass through is then play and is stopped.
As shown in Figure 3, specifically when local residence network has data, may further comprise the steps:
Step 31, HMT send authentication request to SP;
After SP receives authentication request, HMT is carried out authentication operation, specifically may further comprise the steps:
Step 32, SP carry out the user data library inquiry by BOSS;
Step 33, BOSS return Query Result to SP, if authentication is passed through, then can carry out operations such as program request; If authentication is not passed through, then can only browse with limitation;
Step 34, SP send authentication to HMT and pass through message;
Step 35, SP tabulate to the HMT display program content;
Step 36, HMT to EMS inquiry head and the tabulation of follow-up data source, if authentication is not passed through, then stop program request according to contents list; If authentication is passed through, then carry out step:
Step 37, HMT download head data and broadcast from EMS, carry out step simultaneously:
Step 38, HMT send authorization requests to DRMS;
DRMS carries out Authorized operation to HMT, mainly comprises,
Step 39, DRMS are to HMT return authorization content;
Step 310, HMT return confirmation to DRMS;
If authorize not by or HMT do not accept mandate, then stop program request; Pass through if authorize, then carry out step:
Step 311, HMT adopt the mode of multistage inquiry together inquiry to the tabulation of EMS data query source;
Step 312, EMS carry out the rendition list according to inquiry to be handled;
Step 313, EMS return the tabulation of program data source to HMT, promptly have the HMT tabulation of desired data, and through certain strategy, ordering, have both comprised a plurality of data segments, and every section also has a plurality of selections, and tabulation must be EMS at last;
Step 314, HMT are to downloading supplier's request msg;
Step 315, download supplier return program data to HMT; HMT receives data, broadcast program, and program request finishes.
At this moment,, then proceed step 311, up to receiving whole request msgs if HMT does not receive whole request msgs.
The described download of step 314 and step 315 supplier refers to this residence network EMS or other local HMT, and HMT is to downloading supplier's request msg, and downloads the supplier in the process of HMT return data, employing be the P2P strategy.
After above-mentioned program request finished, operation support system chargeed to this program request.
As shown in Figure 4, when local residence network free of data, at first also be to carry out the authentication and authorization flow process of above-mentioned steps 31 specifically to step 310, if authorize not by or HMT do not accept mandate, then stop program request; Pass through if authorize, then carry out following steps:
Step 411, HMT adopt mode of multistage inquiry together to the tabulation of EMS data query source;
Step 412, since this locality do not have data, so EMS inquires about to DS;
Step 413, DS return the tabulation of program data source to EMS;
Step 414, EMS carry out preliminary treatment according to policy selection to tabulation;
Step 415, EMS are to downloading supplier's request msg;
Step 416, download supplier return program data to EMS;
Step 417, EMS return program data to HMT; HMT receives data, broadcast program, and program request finishes.
At this moment,, then proceed step 411, up to receiving whole request msgs if HMT does not receive whole request msgs.What as shown in Figure 6, this moment, HMT carried out is a skip before operation.
As shown in Figure 7,, jump operation after then carrying out one if HMT finds in the local hard drive required data are just arranged in the process of request msg, direct reading of data from local hard drive, and no longer to the EMS request msg.
The described download of step 415 and step 416 supplier refers to this residence network EMS or other local HMT, and metropolitan area network or other residence network, and HMT is to downloading supplier's request msg, and downloads the supplier in the process of HMT return data, employing be the P2P strategy.
After above-mentioned program request finished, DRMS sent the charging statistical information to BOSS, and operation support system charges to this program request.
In the method for above-mentioned realization video request program, also comprise a HMT normal shutdown flow process after program request finishes, described HMT normal shutdown flow process mainly comprises following content:
HMT sends the data segment updating message to EMS; EMS receives after the message more new database;
The HMT shutdown, and to EMS transmission shutdown message.
As shown in Figure 5, specifically may further comprise the steps:
Step 51, HMT carry out shutdown and handle; If have the data segment of not report to upgrade, then send the data segment updating message to EMS;
Step 52, EMS more return acknowledge message to HMT after the new database;
Step 53, HMT send shutdown message to EMS;
Step 54, HMT all send shutdown message to HMTa (downloading the provider) and HMTb (download request side).
In step 51, if step 53,54 is then directly carried out in the not data segment of report renewal.
The present invention realizes in the method for video request program, also comprises HMT start flow process before program request, and mainly comprise step: HMT sends log-on message to EMS; The EMS inquiry is the update mode database also, and returns acknowledge message to HMT;
Specifically comprise three aspects: the one, existing subscriber HMT opening initialization flow process; The 2nd, newly-increased HMT flow process; The 3rd, HMT lands the door flow process.
As shown in Figure 8, HMT opening initialization flow process comprises step:
HMT obtains the native network configuration when step 81, start, comprising the information of EMS;
Step 82, HMT send log-on message (comprising device identification, IP address etc.) to EMS, comprise the update mode of this machine media data in the information;
Step 83, EMS inquiry update mode database are safeguarded HMT state table (ID, IP, current state, this HMT data list);
Step 84, EMS return confirmation to HMT.
As shown in Figure 9, newly-increased HMT flow process is a branch of HMT opening initialization, specifically comprises step:
HMT obtains the native network configuration when step 91, start, comprising the information of EMS;
Step 92, HMT send log-on message to EMS;
Step 93, EMS inquiry and update mode database;
Step 94, EMS return this HMT to HMT and are newly-increased affirmation message;
Step 95, HMT send to EMS and upgrade the data segment informational message;
Step 96, EMS return acknowledge message to HMT.
After above-mentioned steps was finished, HMT, comprised increasing new data or deleting out-of-date or useless data so that this machine is carried out the data updating task to the tabulation of EMS request msg updating task.Afterwards,
EMS returns relevant information to HMT, and HMT might not handle after receiving information at once, but priority treatment user operation.
As shown in figure 10, be the main flow process that HMT lands door.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (10)
1. video on-demand system, by the operation support system support, described operation support system provides video traffic for video on-demand system, it is characterized in that, and described video on-demand system comprises metropolitan area network media system and at least one residence network media system, wherein,
Described metropolitan area network media system comprises center media server CMS, a plurality of distribution of media buffer memory node MDC and a plurality of edge media server EMS, is connected by point-to-point P2P equity between described CMS and a plurality of MDC and between each MDC and a plurality of EMS, described a plurality of MDC each other, a plurality of EMS passes through the reciprocity connection of P2P each other;
Described each residence network media system comprises EMS and a plurality of media termination HMT, is connected by the P2P equity between described EMS and a plurality of HMT, and described a plurality of HMT are each other by the connection of P2P equity.
2. video on-demand system according to claim 1 is characterized in that, is connected by the P2P equity between described CMS and a plurality of EMS.
3. video on-demand system according to claim 1 and 2 is characterized in that, the operating process of described EMS comprises,
EMS preserves the certain proportion media data, and the head of all VOD programs;
EMS adopts P2P mechanism, downloads required media data to the CMS inquiry and from the metropolitan area network data source;
After EMS, MDC media data change, notice CMS.
4. video on-demand system according to claim 1 and 2 is characterized in that, the operating process of described HMT comprises,
HMT adopts P2P mechanism, to EMS data query source, and downloads required media data from the residence network data source;
HMT preserves institute's data downloaded, and after the local data of HMT changes, notice EMS; The operating state of HMT regularly circular is given EMS, and EMS can inquire about its operating state to HMT.
5. the method by above-mentioned video on-demand system realization video request program is characterized in that, may further comprise the steps:
A, HMT are to operation support system request authentication and mandate; If authentication and/or mandate are not passed through, then stop video request program; Pass through if authorize, then carry out step:
B, HMT tabulate to EMS data query source;
C, EMS at first carry out the data source inquiry from local residence network, if there are data this locality, then EMS carries out the rendition list processing to the data source of inquiry, and carries out step D;
If local free of data is then carried out step e;
D, EMS provide data by local residence network to HMT; HMT receives data, broadcast program, and program request finishes;
E, EMS tabulate to CMS data query source;
F, EMS provide data by other residence network in metropolitan area network or the metropolitan area network to HMT; HMT receives data, broadcast program, and program request finishes.
6. the method for realization video request program according to claim 5 is characterized in that, described steps A comprises:
A1, HMT send authentication request to service portal SP;
A2, SP carry out authentication operation to HMT, if authentication is not passed through, then stop program request; If authentication is passed through, then carry out step:
A3, HMT download head data and broadcast from EMS, send authorization requests to system for numeral copyright management DRMS simultaneously;
A4, DRMS carry out Authorized operation to HMT, if authorize not by or HMT do not accept mandate, then stop program request; Pass through if authorize, then carry out step B.
7. the method for realization video request program according to claim 5 is characterized in that, described step D and/or step F also comprise,
If HMT does not receive whole request msgs, then proceed step C;
8. the method for realization video request program according to claim 5 is characterized in that, also comprises HMT normal shutdown flow process after described step D and/or the step F, and described HMT normal shutdown flow process comprises step:
G, HMT send the data segment updating message to EMS; EMS receives after the message more new database;
H, HMT shutdown, and to EMS transmission shutdown message;
9. the method for realization video request program according to claim 5 is characterized in that, also comprises HMT start flow process before the described steps A, and described HMT start flow process comprises step:
A-1, HMT send log-on message to EMS;
A-2, EMS inquiry is the update mode database also, and returns acknowledge message to HMT.
10. according to the method for each described realization video request program of claim 5 to 9, it is characterized in that, when the HMT described in the described step B tabulates to EMS data query source, adopt mode of multistage inquiry together.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100559870C (en) * | 2006-09-21 | 2009-11-11 | 中国科学技术大学 | Video on-demand system and this system realize the method that data are disposed |
| CN103701827A (en) * | 2014-01-03 | 2014-04-02 | 上海美琦浦悦通讯科技有限公司 | Method for realizing stream media play based on self-adaption stream media service gateway system |
| CN104796394A (en) * | 2014-06-05 | 2015-07-22 | 合肥星服信息科技有限责任公司 | File nonproliferation technology based on local area network safe area |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060184688A1 (en) * | 2005-02-17 | 2006-08-17 | Nec Laboratories America, Inc. | System and Method for Parallel Indirect Streaming of Stored Media from Multiple Sources |
| CN100405795C (en) * | 2005-02-24 | 2008-07-23 | 广东省电信有限公司研究院 | Service system for distributed reciprocal flow media and realizing method for requesting programm |
| CN100493091C (en) * | 2006-03-10 | 2009-05-27 | 清华大学 | Flow-media direct-broadcasting P2P network method based on conversation initialization protocol |
| CN100559870C (en) * | 2006-09-21 | 2009-11-11 | 中国科学技术大学 | Video on-demand system and this system realize the method that data are disposed |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100559870C (en) * | 2006-09-21 | 2009-11-11 | 中国科学技术大学 | Video on-demand system and this system realize the method that data are disposed |
| CN103701827A (en) * | 2014-01-03 | 2014-04-02 | 上海美琦浦悦通讯科技有限公司 | Method for realizing stream media play based on self-adaption stream media service gateway system |
| CN104796394A (en) * | 2014-06-05 | 2015-07-22 | 合肥星服信息科技有限责任公司 | File nonproliferation technology based on local area network safe area |
| CN104796394B (en) * | 2014-06-05 | 2018-02-27 | 深圳前海大数金融服务有限公司 | File non-proliferation technology based on LAN safety area |
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