CN102438170A - Audio and video service on demand method applied to broadcast television network, system thereof and apparatus - Google Patents
Audio and video service on demand method applied to broadcast television network, system thereof and apparatus Download PDFInfo
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Abstract
The invention discloses an audio and video service on demand method applied to a broadcast television network and a system thereof. A flow control channel is established between an on demand client (ODC) and a session manager (SM); when an abnormal accident occurs in on demand audio and video services, there is no need for participation of the ODC and an on demand resource manager (ODRM) directly closes session with a streaming server (SS); an SS' is selected again to carry out audio and video flow pushing process of the on demand audio and video services; the ODC sends a flow control request to the SM; the flow control request is sent to the reselected SS' through the ODRM; and the reselected SS' is used to complete the repushing of the on demand audio and video services. According to the invention, there is no need for participation during the whole implementation process of the method; and it is also unnecessary to close a session between an ODC and an SM, a session between the SM and an edge resource manager (ERM) and a session between the SM and the ODRM; therefore, time is saved; an occurrence of a blank screen phenomenon on the ODC will not accrue; and user experience is enhanced.
Description
Technical field
The present invention relates to the integration of three networks technology of CHINA RFTCOM Co Ltd, internet and communication network, particularly a kind of audio frequency and video service point broadcasting method, system and device that is applied in the CHINA RFTCOM Co Ltd.
Background technology
Along with the development of technology, CHINA RFTCOM Co Ltd, internet and communication network merge gradually, are called integration of three networks technology.Integrate various network resources, forming unified CHINA RFTCOM Co Ltd is a very big challenge.After integration in the unified CHINA RFTCOM Co Ltd; Need carry out program request to audio, video data,, just need set up the audio frequency and video service point broadcast system of an opening for service and the expansion that guarantees the subsequent sound video traffic; As shown in Figure 1; Fig. 1 is the audio frequency and video service point broadcast system structural representation of prior art, and this system also is called as VOD system of future generation (NGOD, Next Generation On Demand).
In this audio frequency and video service point broadcast system, comprising: buy server (ES, Entitlement), navigation server (NS; Navigation Server), program request client (ODC; On Demand Client), session manager (SM, Session Manager), edge resource manager (ERM, Edge Resource Manager), edge device (ED; Edge Device), on-demand assets manager (ODRM; On Demand Resource Manager), assets propagation manager (APM, Asset Propagation Manager) and plug-flow server (SS, Streaming Server).
Have a plurality of ODC in the broadcast system of whole audio frequency and video service point, one of them ODC need open the professional service of program request audio frequency and video earlier before the service of receiving station broadcast video traffic.Particularly; ODC is through the service of A7 interface to NS request order point broadcast video traffic, and NS carries out alternately with ES after receiving the request of ODC transmission through the A7 interface; Indication ES is to the order authentication of ODC; Through after, NS has ordered the order video demand (telecommunication) service service that it needs through A7 interface notice ODC, NS has also ordered ODC the message informing SM of program request audio frequency and video business service through the S2 interface with SM.
After the network side of CHINA RFTCOM Co Ltd has been ordered program request audio frequency and video business service, just can receive the audio, video data of institute's program request at ODC, below specify.
ODC through and SM between the S1 interface send the conversation request set up the program request audio, video data to SM, after SM receives, with this conversation request through and ERM between the S6 interface transmit; ERM be ODC select ED and through and selected ED between the R6 interface send initialization requests to selected ED, after selected ED receives, set up the V4 interface with ODC, set up the V3 interface with SS.
Through the S3 interface ODC audio/video on-demand service request is sent to ODRM between SM and the ODRM then; ODRM is that ODC distributes the SS resource, and notice SS, and SS and ODC set up the Flow Control passage; It among the figure C1 interface; Receive the flow control request that ODC sends through the Flow Control passage, and through the V3 interface audio frequency and video business of ODC program request is sent to ED in view of the above, ED sends to ODC through the audio, video data in the VOD service of the ODC program request of V4 interface after with demodulation again and plays.In this system, APM also is used under the control of ODRM the assets of SS are propagated and manages, and just for the ODC Resources allocation SS is provided resource information for ODRM.
Fig. 2 supposes that for prior art is applied to the audio frequency and video service point broadcasting method flow chart in the CHINA RFTCOM Co Ltd ODC has successfully ordered VOD service, and its concrete steps are:
Step 201, ODC send the audio/video on-demand conversation request to SM, require the program request audio frequency and video professional;
In this step, have the S1 interface between ODC and the SM, this request is sent through the S1 interface;
Step 202, SM distribute the conversation request of ED resource to the ERM request of sending;
In this step, have the S6 interface between SM and the ERM, send the conversation request of request distribution ED through this S6 interface;
Before this step, SM can arrive NS checking ODC order point broadcast video traffic;
Step 203, ERM select the ED resource, and send initialization requests to selected ED;
In this step, initialization requests is to send through the R6 interface between ERM and the ED;
Step 204, ERM return selected ED resource information and give SM;
Step 205, SM send to ODRM and distribute the SS resource request, carry the ED resource information;
In this step, distributing the SS resource request is to send through the S3 interface that has between SM and the ODRM;
Step 206, ODRM send the request of obtaining the professional place of the audio frequency and video SS resource information of wanting program request and give APM;
In this step, this request is sent through the R1 interface between ODRM and the APM;
In APM, the corresponding relation of storage audio frequency and video business and SS just provides which concrete program among which SS, and visit APM just can get access to corresponding SS;
Step 207, APM return the professional place of the audio frequency and video SS resource information of wanting program request to ODRM;
In this step, APM just returns the professional program of audio frequency and video of wanting program request and divides volume information;
Step 208, ODRM confirm SS according to the SS resource information, send to determined SS and set up conversation request, carry the ED resource information;
In this step, set up conversation request and send through Interface R2;
Step 209, SS return the Flow Control address to ODRM, just can be to self sending the address of flow control request;
Step 210, ODRM return to SM with the Flow Control address that obtains;
Step 211, SM return to ODC with this Flow Control address;
Step 212, ODC are sent the flow control request that the audio frequency and video business is carried out program request according to this Flow Control address to SS, such as operation or tentative etc.;
In this step, set up the Flow Control channel between ODC and the SS, receive the flow control request that the audio frequency and video business is carried out program request through this Flow Control channel SS, be expressed as the C1 interface in the drawings;
Step 213, SS be according to this flow control request, pushes the audio/video flow in the audio frequency and video business of institute's program request to ED;
In this step, audio/video flow pushes through the V3 interface;
Step 214, ED offer ODC to from SS the audio/video flow the audio frequency and video business that receives being modulated to coaxial cable.
Through the process of Fig. 2, ODC just can be from the coaxial cable appointment frequency of locking, and demodulation obtains the audio, video data of the audio frequency and video business of institute's program request, and the user just can watch the audio, video data of institute's program request through ODC.When audio, video data is exported; Unusual condition might appear; When finishing such as audio, video data when institute's program request, the audio, video data of the ODC flow control request indication institute program request of sending plays the ending; Or the ODC flow control request indication of sending falls back on the beginning part of audio, video data etc. soon, and also unusual or CHINA RFTCOM Co Ltd is unusual or the like such as the memory device of SS, just need change the frequency that SS or same SS will change provides audio frequency and video professional; To such an extent as to the Flow Control address modification of SS, this all needs SS to initiate exception handling procedure.
Fig. 3 for prior art provide unusual condition appears in the audio, video data playing process of institute's program request and the time SS abnormality eliminating method flow chart that carries out, its concrete steps are:
Step 301, SS send the unusual condition request that unusual condition occurs to ODRM;
Step 302, SS stop the audio/video flow in the audio frequency and video business of ED propelling movement institute program request;
Step 303, ODRM send plug-flow to SM and ask unusually;
Step 304, SM send plug-flow to ODC and ask unusually;
Flow Control passage between step 305, ODC disconnection and the SS;
Step 306, ODC send to SM and require to close conversation request;
Step 307, SM send to ERM and require to close conversation request;
Step 308, ERM send to ED and require to close conversation request;
Step 309, SM send to ODRM and require to close conversation request;
Step 310, ODRM send to SS and require to close conversation request, and SS closes this professional program request of audio frequency and video that provides for ODC;
Step 311, ODC carry out the professional on-demand process of next audio frequency and video according to the process of Fig. 1 again;
In this step; Can reselect the professional audio/video flow propelling movement process of audio frequency and video that SS ' carries out institute's program request according to the process of Fig. 1; If because audio, video data in playing process time shift and produce unusual condition; Then can push process again by the professional audio/video flow of audio frequency and video that former SS selects another frequency to carry out institute's program request, but need obtain new playlist, just the Flow Control address can be changed.
Can find out that from such scheme when SS carried out abnormality processing, one side needed the cooperation of ODC; Just step 305 and step 306 want SM to close this session on the other hand, rebulid session again; More the process of new session is long for this, at this moment, will cause the ODC blank screen; Can't playing audio-video data, the user experience variation.
When unusual condition appears in the audio frequency and video business of institute's program request, mainly contain two kinds of situation:
First kind of situation is because the audio, video data time shift situation of the flow control request that ODC sends indication institute program request.
In this case, need SM to revise the professional playlist of institute's program request audio frequency and video, at this moment, just needing the leading SM that closes of ODC is the session that ODC sets up; Rebulid new session again, close session and set up the flow process of new session very long, in setting up the new session process; ODC needs to set up the audio/video flow passage with the SS ' that reselects again through ED, just redistributes the frequency of playing audio-video data, needs frequency locking again; At this moment, will cause the ODC blank screen, user experience is poor.
Second kind of situation is because unusual situation appears in SS.
In this case, unusual or with the CHINA RFTCOM Co Ltd communication disruption etc. such as the memory device of SS, just need the playlist that SM provides be switched to different SS services, at this moment, just need ODC to dominate SM and close this session, rebulid new session.In setting up the new session process, ODC needs to set up the audio/video flow passage with the SS ' that reselects again through ED, just redistributes the frequency of playing audio-video data, needs frequency locking again, at this moment, will cause the ODC blank screen, and user experience is poor.
Summary of the invention
In view of this; The present invention provides a kind of audio frequency and video service point broadcasting method, system and device that is applied in the CHINA RFTCOM Co Ltd; In the time of can unusual condition occurring in the audio frequency and video business of institute's program request; The audio frequency and video business that does not need the ODC participation just can in very short time, accomplish institute's program request pushes process again, can not cause ODC blank screen to occur, improves user experience.
Technical scheme of the present invention is achieved in that
A kind of audio frequency and video service point broadcasting method that is applied in the CHINA RFTCOM Co Ltd; Set up the Flow Control passage between program request client ODC and the session manager SM; ODC sends flow control request through this Flow Control passage and gives SM; SM is transmitted to plug-flow server S S through on-demand assets manager ODRM with this flow control request, and SS is pushed to ODC with the audio/video flow of ODC institute program request through edge device ED according to this flow control request, and this method also comprises:
SS detects unusual condition; Notice ODRM; ODRM close and SS between session; ODRM reselects plug-flow server S S ' according to the audio/video flow of ODC institute program request, and ODRM is after the plug-flow server S S ' that reselects sends flow control request, and SS ' is pushed to ODC with the audio/video flow of ODC institute program request through edge device ED according to this flow control request.
The said plug-flow server S S ' that reselects perhaps is different plug-flow servers for the different frequent points of SS.
It is the audio, video data generation time shift that ODC sends the program request of flow control request indication institute that said SS detects unusual condition;
The memory device that perhaps occurs in the plug-flow process for SS is unusual and network is unusual.
The process that said ODRM reselects plug-flow server S S ' according to the audio/video flow of ODC institute program request is:
ODRM sends the request of obtaining the professional place of the audio frequency and video SS resource information of wanting program request to assets propagation manager APM;
APM returns the professional place of the audio frequency and video SS resource information of wanting program request to ODRM, and ODRM reselects plug-flow server S S ' according to this SS resource information.
It is ODC when sending the audio, video data generation time shift of flow control request indication institute program request that said SS detects unusual condition, reselects plug-flow server S S ' before at said ODRM according to the audio/video flow of ODC institute program request, and this method also comprises:
ODRM pushes end to the professional audio/video flow of audio frequency and video of SM notice institute program request;
SM close and ODRM between the Flow Control passage;
ODRM close and SS between the Flow Control passage;
SM upgrades the audio frequency and video business of institute's program request.
A kind of audio frequency and video service point broadcast system that is applied in the CHINA RFTCOM Co Ltd comprises: ODC, SM, ED, ODRM, SS and SS ', wherein,
SM is used to receive the conversation request of setting up program request audio frequency and video business that ODC sends, and obtains the ED resource, and selected ED information and conversation request are sent to ODRM, and flow control request is sent to ODRM;
ODRM is used for sending ED information according to the selected SS of the professional conversation request of program request audio frequency and video to selected SS, sends flow control request to selected SS;
SS is used for according to the audio frequency and video passage between foundation of ED information and the ED, and the audio frequency and video passage that passes through to be set up is pushed to selected ED according to the flow control request audio/video flow that the audio frequency and video of institute's program request are professional;
ED is used for being modulated to coaxial cable from the professional audio/video flow of audio frequency and video of SS reception institute program request and offers ODC;
ODC; Be used for sending the conversation request of setting up program request audio frequency and video business to SM, the Flow Control passage between foundation and the SM, the Flow Control passage that passes through to be set up sends flow control request to SM; From the coaxial cable appointment frequency of locking, demodulation obtains the professional audio, video data of audio frequency and video of institute's program request;
When SS detected unusual condition, this system also comprised the SS ' that reselects:
ODRM after being used to receive the unusual condition notice of SS transmission, according to the selected SS ' of the professional conversation request of program request audio frequency and video, sends ED information to selected again SS ', again to selected again SS ' transmission flow control request;
SS is used to detect unusual condition, sends the unusual condition notice to ODRM;
The SS ' that reselects is used for according to the audio frequency and video passage between foundation of ED information and the ED, and the audio frequency and video passage that passes through to be set up is pushed to selected ED according to the flow control request audio/video flow that the audio frequency and video of institute's program request are professional;
ED is used for being modulated to coaxial cable from the professional audio frequency and video of audio frequency and video that the SS ' that reselects receives institute's program request and offers ODC.
Said system also comprises APM, is used for ODRM when selecting SS, is the selected SS of ODC according to the professional conversation request of program request audio frequency and video, and offers ODRM.
Said system also comprises ERM, is used to select ED and notifies ED, and selected ED information is sent to SM;
Said SM also is used to obtain the ED resource.
A kind of on-demand assets manager ODRM that is applied in the CHINA RFTCOM Co Ltd comprises the notice receiver module, closes Executive Module and reselect module, wherein,
The notice receiver module is used to receive the notice that detects unusual condition that SS sends;
Close Executive Module, be used to close and SS between session;
Reselect module, be used for reselecting plug-flow server S S ' according to the audio/video flow of ODC institute program request, ODRM sends flow control request to the plug-flow server S S ' that reselects.
The said module of reselecting also is used for sending the request of obtaining the professional place of the audio frequency and video SS resource information of wanting program request to assets propagation manager APM; Receive the professional place of the audio frequency and video of the wanting program request SS resource information that APM returns, reselect plug-flow server S S ' according to this SS resource information.
Can find out from such scheme; The present invention is based upon the Flow Control passage between ODC and the SM; When unusual condition appears in the audio frequency and video business in institute's program request, do not need ODC to participate in, and directly close by ODRM and SS between session; Reselect the professional audio/video flow propelling movement process of audio frequency and video that SS ' carries out institute's program request; Send flow control request by ODC to SM then, this flow control request sends to the SS ' that reselects through ODRM, and the audio frequency and video business of being accomplished institute's program request by the SS ' that reselects pushes again.This process does not need ODC to participate in, and need not close ODC and SM, the session of having set up between SM and the ERM, and the session between SM and the ODRM so saved the time, can not cause ODC blank screen to occur, improves user experience.
Description of drawings
Fig. 1 is the audio frequency and video service point broadcast system structural representation of prior art;
Fig. 2 is applied to the audio frequency and video service point broadcasting method flow chart in the CHINA RFTCOM Co Ltd for prior art;
Fig. 3 for prior art provide unusual condition appears in the audio, video data playing process of institute's program request and the time SS abnormality eliminating method flow chart that carries out;
Fig. 4 is the abnormality eliminating method flow chart that SS carries out when in the audio, video data playing process of institute's program request, unusual condition occurring provided by the invention;
Fig. 5 is applied to the audio frequency and video service point broadcasting method flow chart in the CHINA RFTCOM Co Ltd for the present invention;
Fig. 6 is the audio frequency and video service point broadcast system sketch map that is applied in the CHINA RFTCOM Co Ltd provided by the invention;
The professional method for updating flow chart of audio frequency and video that Fig. 7 causes for the professional time shift of the audio frequency and video of institute provided by the invention program request;
Fig. 8 is an ODRM structural representation provided by the invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is done further explain.
Can find out from background technology; No matter be because the audio, video data time shift situation of the flow control request indication institute program request that ODC sends, still because the flow control request that ODC sends indicates the audio, video data time shift situation of institute's program request to cause unusual condition occurring in the audio frequency and video business of institute's program request, when the audio frequency and video business that need carry out institute's program request pushes process again; Can cause ODC blank screen to occur; The reason of user experience difference is to need ODC to participate in, and will close and rebulid the session of having set up between ODC and SM and SM and the ERD; Session between SM and the ODRM, process complicacy and time are long.
Therefore; In order to overcome the problems referred to above, the present invention is based upon the Flow Control passage between ODC and the SM, when unusual condition appears in the audio frequency and video business in institute's program request; By SS notice ODRM; ODRM directly control close and SS between session, reselect the professional audio/video flow of audio frequency and video that SS ' carries out institute's program request and push process, send flow control request by ODC to SM then; This flow control request sends to the SS ' that reselects through ODRM, and the audio frequency and video business of being accomplished institute's program request by the SS ' that reselects pushes again.This process does not need ODC to participate in, and need not close the session of having set up between ODC and SM and SM and the ERM, and the session between SM and the ODRM so saved the time, can not cause ODC blank screen to occur, improves user experience.
Fig. 4 is the abnormality eliminating method flow chart that SS carries out when in the audio, video data playing process of institute's program request, unusual condition occurring provided by the invention; Audio frequency and video operation system network side has pushed the professional audio/video flow of audio frequency and video of its program request for ODC; Between ODC and SM, set up the Flow Control passage, the Flow Control passage that ODC passes through to be set up sends flow control request to SM, and SM sends to SS with this flow control request through ODRM; SS is the professional audio/video flow of audio frequency and video that ODC pushes institute's program request according to this flow control request through ED; At this moment, SS detects and unusual condition occurs, and its concrete steps are:
Step 401, SS detect unusual condition through ED when the professional audio/video flow of the audio frequency and video that push institute's program request for ODC, send the abnormity notifying request and give ODRM;
In this step; Detected unusual condition has two kinds of situation; A kind of is the audio, video data time shift situation of indicating institute's program request owing to the flow control request that ODC sends, and another kind is indicated the audio, video data time shift situation of institute's program request for the flow control request of sending owing to ODC and caused unusual condition occurring in the audio frequency and video business of institute's program request;
It is the professional audio/video flow of audio frequency and video that ODC pushes institute's program request that step 402, SS stop through ED;
Step 403, ODRM are sent to SS and are closed the current sessions request, close and SS between current sessions;
Step 404, ODRM send the request of obtaining the professional place of the audio frequency and video SS resource information of wanting program request again and give APM;
In this step, this request is sent through the R1 interface between ODRM and the APM;
In APM, the corresponding relation of storage audio frequency and video business and SS just provides which concrete program among which SS, and visit APM just can get access to corresponding SS;
Step 405, APM return the professional place of the audio frequency and video SS resource information of wanting program request to ODRM;
In this step, APM just returns the professional program of audio frequency and video of wanting program request and divides volume information;
Step 406, ODRM reselect SS ' according to the SS resource information, send to the SS ' that reselects and rebulid conversation request, carry the ED resource information;
In this step, rebulid conversation request and send through Interface R2, SS ' that reselects and SS before can be all a SS, also can not be all a SS, and when being all a SS, its frequency that provides is inequality;
Step 407, the SS ' that reselects return the Flow Control address to ODRM, just can be to self sending the address of flow control request;
Step 408, ODRM are according to this Flow Control address, and the flow control request that will send from the ODC that SM obtains sends to SS;
Step 409, the SS ' that reselects be according to this flow control request, pushes the audio/video flow in the audio frequency and video business of institute's program request to ED;
In this step, audio/video flow pushes through V3;
Step 410, ED are modulated to coaxial cable to the audio/video flow the audio frequency and video business that receives from the SS ' that reselects and offer ODC.
In the process of Fig. 4; The Flow Control passage is between SM and ODC, to set up, and when detecting unusual condition through ED during at the professional audio/video flow of the audio frequency and video that push institute's program request for ODC at SS, it is just passable that ODRM only need switch the SS ' that reselect mutual with it; Can not have influence on SM; More can not have influence on ODC, make the process of switching SS shorten greatly, effectively guarantee to use the user experience of ODC.
Particularly, Fig. 5 is applied to the audio frequency and video service point broadcasting method flow chart in the CHINA RFTCOM Co Ltd for the present invention, and its concrete steps are:
Step 501, ODC send the audio/video on-demand conversation request to SM, require the program request audio frequency and video professional;
In this step, have the S1 interface between ODC and the SM, this request is sent through the S1 interface;
Step 502, SM distribute the conversation request of ED resource to the ERM request of sending;
In this step, have the S6 interface between SM and the ERM, send the conversation request of request distribution ED through this S6 interface;
Before this step, SM can arrive NS checking ODC order point broadcast video traffic;
Step 503, ERM select the ED resource, and send initialization requests to selected ED;
In this step, initialization requests is to send through the R6 interface between ERM and the ED;
Step 504, ERM return selected ED resource information and give SM;
Step 505, SM send to ODRM and distribute the SS resource request, carry the ED resource information;
In this step, distributing the SS resource request is to send through the S3 interface of setting up between SM and the ODRM;
Step 506, ODRM send the request of obtaining the professional place of the audio frequency and video SS resource information of wanting program request and give APM;
In this step, this request is sent through the R1 interface between ODRM and the APM;
In APM, the corresponding relation of storage audio frequency and video business and SS just provides which concrete program among which SS, and visit APM just can get access to corresponding SS;
Step 507, APM return the professional place of the audio frequency and video SS resource information of wanting program request to ODRM;
In this step, APM just returns the professional program of audio frequency and video of wanting program request and divides volume information;
Step 508, ODRM confirm SS according to the SS resource information, send to determined SS and set up conversation request, carry the ED resource information;
In this step, set up conversation request and send through Interface R2;
Step 509, SS return the Flow Control address to ODRM, just can be to self sending the address of flow control request;
Step 510, ODRM return to SM with the Flow Control address that obtains;
Step 511, SM return to ODC with this Flow Control address;
Set up the Flow Control passage between step 512, ODC and the SM, ODC sends flow control request that audio frequency and video business carried out program request through the Flow Control passage to SM according to this Flow Control address, and such as operation or tentative etc., this flow control request is transmitted to SS by SM through ODRM;
Step 513, SS be according to this flow control request, pushes the audio/video flow in the audio frequency and video business of institute's program request to ED;
In this step, audio/video flow pushes through the V3 interface;
Step 514, ED are modulated to coaxial cable to the audio/video flow the audio frequency and video business that receives from SS and offer ODC.
Like this, ODC just can be from the coaxial cable appointment frequency of locking, and demodulation obtains the professional audio, video data of audio frequency and video of institute's program request.
Fig. 6 is the audio frequency and video service point broadcast system sketch map that is applied in the CHINA RFTCOM Co Ltd provided by the invention, and this Fig. 6 is based on system shown in Figure 1, and each unit does not change and increases; Only the Flow Control passage between SS and the ODC is cancelled, and set up the Flow Control passage between ODC and the SM, the Flow Control passage between SM and the ODRM; And the Flow Control passage between ODRM and the SS; Specifically comprise: ODC, SM, ED, ODRM and SS, wherein
SM is used to receive the conversation request of setting up program request audio frequency and video business that ODC sends, and obtains the ED resource, and selected ED information and conversation request are sent to ODRM, and flow control request is sent to ODRM;
ODRM is used for sending ED information according to the selected SS of the professional conversation request of program request audio frequency and video to selected SS, sends flow control request to selected SS;
SS is used for according to the audio frequency and video passage between foundation of ED information and the ED, and the audio frequency and video passage that passes through to be set up is pushed to selected ED according to the flow control request audio/video flow that the audio frequency and video of institute's program request are professional;
ED is used for being modulated to coaxial cable from the professional audio/video flow of audio frequency and video of SS reception institute program request and offers ODC;
ODC; Be used for sending the conversation request of setting up program request audio frequency and video business to SM, the Flow Control passage between foundation and the SM, the Flow Control passage that passes through to be set up sends flow control request to SM; From the coaxial cable appointment frequency of locking, demodulation obtains the professional audio, video data of audio frequency and video of institute's program request;
When SS detected unusual condition, this system also comprised the SS ' that reselects:
ODRM after being used to receive the unusual condition notice of SS transmission, according to the selected SS ' of the professional conversation request of program request audio frequency and video, sends ED information to selected again SS ', again to selected again SS ' transmission flow control request;
SS is used to detect unusual condition, sends the unusual condition notice to ODRM;
The SS ' that reselects is used for according to the audio frequency and video passage between foundation of ED information and the ED, and the audio frequency and video passage that passes through to be set up is pushed to selected ED according to the flow control request audio/video flow that the audio frequency and video of institute's program request are professional;
ED is used for being modulated to coaxial cable from the professional audio frequency and video of audio frequency and video that the SS ' that reselects receives institute's program request and offers ODC.
In this system, also comprise APM, be used for ODRM when selecting SS, be the selected SS of ODC according to the professional conversation request of program request audio frequency and video, and offer ODRM.
In this system, also comprise ERM, be used to select ED and notify ED, selected ED information is sent to SM; Said SM also is used to obtain the ED resource.
Lift a specific embodiment method provided by the invention is described.
After program request audio frequency and video business; The user can receive audio, video data, when audio, video data plays, ODC send the flow control request indication be fast-forward to the last or ODC of audio/video flow in the audio frequency and video business of being play send the flow control request indication shift onto soon in the audio frequency and video business of being play audio/video flow before, SS can receive; SS can revise and push the professional frequency of institute's program request audio frequency and video; The professional propelling movement process of audio frequency and video of Flow Control address just, and renewal institute program request, idiographic flow is following:
The professional method for updating flow chart of audio frequency and video that Fig. 7 causes for the professional time shift of the audio frequency and video of institute provided by the invention program request, its concrete steps are:
Step 701, SS receive ODC send the flow control request indication be fast-forward to the last or ODC of audio/video flow in the audio frequency and video business of being play send the flow control request indication shift onto soon in the audio frequency and video business of being play audio/video flow before the time; Confirm unusual condition, send the abnormity notifying request and give ODRM;
In this step, flow control request sends to SS through SM through ODRM;
It is the professional audio/video flow of audio frequency and video that ODC pushes institute's program request that step 702, SS stop through ED;
Step 703, ODRM push end to the professional audio/video flow of audio frequency and video of SM notice institute program request;
Step 704, SM close and ODRM between the Flow Control passage;
Step 705, SM send to ODRM and close conversation request;
Step 706, ODRM close and SS between the Flow Control passage;
Step 707, ODRM send the current sessions request of closing to SS, the current sessions between request and the SS;
Step 708, SM upgrade the audio frequency and video business of institute's program request;
In this step, just upgrade the professional playlist of audio frequency and video of institute's program request;
Step 709, SM send to ODRM and rebulid conversation request, carry the audio frequency and video business information that will upgrade institute's program request;
Step 710, ODRM send the request of obtaining the professional place of the audio frequency and video SS resource information of wanting program request again according to the audio frequency and video business information that will upgrade institute's program request and give APM;
In this step, this request is sent through the R1 interface between ODRM and the APM;
Step 711, APM return the professional place of the audio frequency and video SS resource information of wanting program request to ODRM;
In this step, APM just returns the professional program of audio frequency and video of wanting program request and divides volume information;
Step 712, ODRM reselect SS ' according to the SS resource information, send to selected SS ' and rebulid conversation request, carry the ED resource information;
In this step, rebulid conversation request and send through Interface R2, SS ' that reselects and SS before can be all a SS, also can not be all a SS, and when being all a SS, its frequency that provides is inequality;
Step 713, the SS ' that reselects return the Flow Control address to ODRM, just can be to self sending the address of flow control request;
Step 714, ODRM return to SM with Flow Control address modification self;
Step 715, SM initiate the C1 flow control request to ODRM, and for example: request is play;
The flow control request that step 716, ODRM transmit SM is to the SS that reselects;
Step 717, the SS that reselects be according to the flow control request of this ODC, pushes the audio/video flow in the audio frequency and video business of institute's program request to ED;
In this step, audio/video flow pushes through the V3 interface;
Step 718, ED are modulated to coaxial cable to the audio/video flow the audio frequency and video business that receives from the SS that reselects and offer ODC.
Like this, ODC just can be from the coaxial cable appointment frequency of locking, and demodulation obtains the professional audio, video data of audio frequency and video of institute's program request.
Fig. 8 is ODRM structural representation provided by the invention, and is as shown in the figure, comprising: notify receiver module, close Executive Module and reselect module, wherein,
The notice receiver module is used to receive the notice that detects unusual condition that SS sends;
Close Executive Module, be used to close and SS between session;
Reselect module, be used for reselecting plug-flow server S S ' according to the audio/video flow of ODC institute program request, ODRM sends flow control request to the plug-flow server S S ' that reselects.
In ODRM, the said module of reselecting also is used for sending the request of obtaining the professional place of the audio frequency and video SS resource information of wanting program request to assets propagation manager APM; Receive the professional place of the audio frequency and video of the wanting program request SS resource information that APM returns, reselect plug-flow server S S ' according to this SS resource information.
Through method, system and device provided by the invention, can optimize the expense on the flow process that SS brings unusually, avoid the frequency locking again of ODC, effectively promote the user experience of using ODC.Improve the support that the professional VOD system of audio frequency and video causes the professional audio/video flow of audio frequency and video to upgrade to the professional time shift of the audio frequency and video of institute's program request; Guarantee the stability of the VOD system network side that audio frequency and video are professional; Do not need ODC to participate in; Guarantee the serviceability of the VOD system that audio frequency and video are professional, reduce the development difficulty of ODC.
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 made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (10)
1. audio frequency and video service point broadcasting method that is applied in the CHINA RFTCOM Co Ltd; It is characterized in that; Set up the Flow Control passage between program request client ODC and the session manager SM, ODC sends flow control request through this Flow Control passage and gives SM, and SM is transmitted to plug-flow server S S through on-demand assets manager ODRM with this flow control request; SS is pushed to ODC with the audio/video flow of ODC institute program request through edge device ED according to this flow control request, and this method also comprises:
SS detects unusual condition; Notice ODRM; ODRM close and SS between session; ODRM reselects plug-flow server S S ' according to the audio/video flow of ODC institute program request, and ODRM is after the plug-flow server S S ' that reselects sends flow control request, and SS ' is pushed to ODC with the audio/video flow of ODC institute program request through edge device ED according to this flow control request.
2. the method for claim 1 is characterized in that, the said plug-flow server S S ' that reselects perhaps is different plug-flow servers for the different frequent points of SS.
3. according to claim 1 or claim 2 method is characterized in that, it is the audio, video data generation time shift that ODC sends the program request of flow control request indication institute that said SS detects unusual condition;
The memory device that perhaps occurs in the plug-flow process for SS is unusual and network is unusual.
4. according to claim 1 or claim 2 method is characterized in that the process that said ODRM reselects plug-flow server S S ' according to the audio/video flow of ODC institute program request is:
ODRM sends the request of obtaining the professional place of the audio frequency and video SS resource information of wanting program request to assets propagation manager APM;
APM returns the professional place of the audio frequency and video SS resource information of wanting program request to ODRM, and ODRM reselects plug-flow server S S ' according to this SS resource information.
5. method as claimed in claim 3; It is characterized in that; It is ODC when sending the audio, video data generation time shift of flow control request indication institute program request that said SS detects unusual condition, reselects plug-flow server S S ' before at said ODRM according to the audio/video flow of ODC institute program request, and this method also comprises:
ODRM pushes end to the professional audio/video flow of audio frequency and video of SM notice institute program request;
SM close and ODRM between the Flow Control passage;
ODRM close and SS between the Flow Control passage;
SM upgrades the audio frequency and video business of institute's program request.
6. an audio frequency and video service point broadcast system that is applied in the CHINA RFTCOM Co Ltd is characterized in that, comprising: ODC, SM, ED, ODRM, SS and SS ', wherein,
SM is used to receive the conversation request of setting up program request audio frequency and video business that ODC sends, and obtains the ED resource, and selected ED information and conversation request are sent to ODRM, and flow control request is sent to ODRM;
ODRM is used for sending ED information according to the selected SS of the professional conversation request of program request audio frequency and video to selected SS, sends flow control request to selected SS;
SS is used for according to the audio frequency and video passage between foundation of ED information and the ED, and the audio frequency and video passage that passes through to be set up is pushed to selected ED according to the flow control request audio/video flow that the audio frequency and video of institute's program request are professional;
ED is used for being modulated to coaxial cable from the professional audio/video flow of audio frequency and video of SS reception institute program request and offers ODC;
ODC; Be used for sending the conversation request of setting up program request audio frequency and video business to SM, the Flow Control passage between foundation and the SM, the Flow Control passage that passes through to be set up sends flow control request to SM; From the coaxial cable appointment frequency of locking, demodulation obtains the professional audio, video data of audio frequency and video of institute's program request;
When SS detected unusual condition, this system also comprised the SS ' that reselects:
ODRM after being used to receive the unusual condition notice of SS transmission, according to the selected SS ' of the professional conversation request of program request audio frequency and video, sends ED information to selected again SS ', again to selected again SS ' transmission flow control request;
SS is used to detect unusual condition, sends the unusual condition notice to ODRM;
The SS ' that reselects is used for according to the audio frequency and video passage between foundation of ED information and the ED, and the audio frequency and video passage that passes through to be set up is pushed to selected ED according to the flow control request audio/video flow that the audio frequency and video of institute's program request are professional;
ED is used for being modulated to coaxial cable from the professional audio frequency and video of audio frequency and video that the SS ' that reselects receives institute's program request and offers ODC.
7. system as claimed in claim 6 is characterized in that said system also comprises APM, is used for ODRM when selecting SS, is the selected SS of ODC according to the professional conversation request of program request audio frequency and video, and offers ODRM.
8. like claim 6 or 7 described systems, it is characterized in that said system also comprises ERM, be used to select ED and notify ED, selected ED information is sent to SM;
Said SM also is used to obtain the ED resource.
9. an on-demand assets manager ODRM who is applied in the CHINA RFTCOM Co Ltd is characterized in that, comprise the notice receiver module, close Executive Module and reselect module, wherein,
The notice receiver module is used to receive the notice that detects unusual condition that SS sends;
Close Executive Module, be used to close and SS between session;
Reselect module, be used for reselecting plug-flow server S S ' according to the audio/video flow of ODC institute program request, ODRM sends flow control request to the plug-flow server S S ' that reselects.
10. system as claimed in claim 9 is characterized in that, the said module of reselecting also is used for sending the request of obtaining the professional place of the audio frequency and video SS resource information of wanting program request to assets propagation manager APM; Receive the professional place of the audio frequency and video of the wanting program request SS resource information that APM returns, reselect plug-flow server S S ' according to this SS resource information.
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| CN101068339A (en) * | 2007-06-01 | 2007-11-07 | 华为技术有限公司 | Method, server and user end for realizing video frequency requested program broadcasting-like services |
| CN102118634A (en) * | 2009-12-31 | 2011-07-06 | 华为技术有限公司 | Scheduling method, device and system for realizing IP (Internet protocol) television service |
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