CN101562583B - Method, system and device for obtaining buffer memory data - Google Patents
Method, system and device for obtaining buffer memory data Download PDFInfo
- Publication number
- CN101562583B CN101562583B CN2008100954156A CN200810095415A CN101562583B CN 101562583 B CN101562583 B CN 101562583B CN 2008100954156 A CN2008100954156 A CN 2008100954156A CN 200810095415 A CN200810095415 A CN 200810095415A CN 101562583 B CN101562583 B CN 101562583B
- Authority
- CN
- China
- Prior art keywords
- media data
- buffer memory
- media
- information
- indication information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a method, a system and a device for obtaining buffer memory data, belonging to the field of communication. The method comprises the steps: a media gateway receives buffer memory obtaining indication information transmitted by a media gateway controller, and the buffer memory obtaining indication information is used for indicating the media gateway to obtain required media data for buffer memory; and the media gateway obtains the media data according to the indication information and performs buffer memory to the media data. The system comprises a media gateway controller and a media gateway, wherein the media gateway controller comprises a request information generation module and a transmission module. The media gateway comprises a receiving module, an obtaining module and a storage module. The invention enables the media gateway to obtain appointed media data under the control of the media gateway controller by defining the buffer memory obtaining indication information in a gateway control protocol and uses the appointed media data as buffer memory data so as to be beneficial to reducing the flow rate of a backbone network, reducing the time delay of a client terminal and improving the service toughness of a media server.
Description
Technical field
The present invention relates to the communications field, particularly a kind of data cached method, system and a kind of device of obtaining.
Background technology
Along with multimedia universal day by day, content of multimedia has taken the most of bandwidth on the current Internet, thereby causes the nervous and client access delay increase of backbone network bandwidth, and the proxy caching technology is alleviated the effective means of this contradiction just.This technology is carried out buffer memory through proxy caching server to the focus object; If subsequent client is to ask to the focus object; Then directly corresponding data are provided to subsequent client by proxy caching server; Thereby reach the load that alleviates backbone network and media server, improve the purpose of QoS of customer.
Be illustrated in figure 1 as the sketch map of proxy caching technical application scene.Among the figure, proxy caching server is deployed in the place of network edge near client, and the object storage that client-access is crossed is in local cache.When client was visited identical object next time, then proxy caching server can be directly from the local cache reading corresponding data, and sends it to client.The spatial cache of proxy caching server is generally all very big, can store lot of data.Can avoid a large amount of repetitive requests and the re-transmitted of data through the proxy caching technology, reduce the flow of backbone network, thereby reduce the network bandwidth that client consumed, alleviate the problem of network congestion.Particularly concerning the wan communication of costliness, can significantly reduce the network bandwidth expense that will pay, network management is also easier.In addition, also can reduce access times, alleviate load of server, improve the robustness of server service media server through the proxy caching technology.
Media Gateway Controller (Media Gateway Controller, MGC) and WMG (Media Gateway MG) is two crucial entities in the packet network.MGC is responsible for CCF; MG is responsible for the service bearer function; Realized calling out separating of control plane and service bearer plane by MGC and MG, thus abundant shared network resource, and the simplified apparatus upgrading is expanded with business; Reduce development and maintenance cost greatly, be illustrated in figure 2 as MG and MGC networking sketch map.
At Web TV (Internet Protocol Television; IPTV) etc. produced following demand in the application of multimedia service: the transmission for fear of backbone network is congested; Optimize data transmission period and user's stand-by period; Need under the control of MGC, realize the proxy caching function of MG, but existing MGC and MG can't satisfy the demand.
Summary of the invention
In order under the control of MGC, to realize the proxy caching function of MG, the embodiment of the invention also provides a kind of data cached method, system and a kind of device of obtaining.Said technical scheme is following:
A kind ofly obtain data cached method, said method comprises:
The buffer memory obtaining indication information that WMG receiving media gateway controller sends; Carry in the said buffer memory obtaining indication information and obtain the required parameter of media data, the media data that is used to indicate said WMG to obtain in advance or obtains needs in real time carries out buffer memory;
Said WMG obtains said media data according to said buffer memory obtaining indication information, and said media data is carried out buffer memory.
A kind of Media Gateway Controller, said Media Gateway Controller comprises:
The request message generation module; Be used to generate request message; Described request message is carried buffer memory obtaining indication information, carries in the said buffer memory obtaining indication information and obtains the required parameter of media data, and the media data that is used to indicate said WMG to obtain in advance or obtains needs in real time carries out buffer memory;
Sending module is used for sending described request message to WMG.
A kind of WMG, said WMG comprises:
Receiver module; Be used for the request message that the receiving media gateway controller sends; Described request message is carried buffer memory obtaining indication information; Carry in the said buffer memory obtaining indication information and obtain the required parameter of media data, the media data that is used to indicate said WMG to obtain in advance or obtains needs in real time carries out buffer memory;
Acquisition module is used for obtaining said media data according to said buffer memory obtaining indication information;
Preserve module, be used for the media data that buffer memory obtains.
A kind ofly obtain data cached system, said system comprises:
Media Gateway Controller and WMG;
Said Media Gateway Controller generates request message; And described request message sent to said WMG; Described request message is carried buffer memory obtaining indication information; Carry in the said buffer memory obtaining indication information and obtain the required parameter of media data, the media data that is used to indicate said WMG to obtain in advance or obtains needs in real time carries out buffer memory;
Said WMG receives described request message, obtains said media data according to the buffer memory obtaining indication information in the described request message, and the media data that obtains is carried out buffer memory.
The embodiment of the invention defines buffer memory obtaining indication information through the expansion gateway control protocol in gateway control protocol, MG can obtain the media data of appointment according to buffer memory obtaining indication information, and the media data that obtains is carried out buffer memory.Through the expansion gateway control protocol; For MG realizes the proxy caching function strong support is provided; Make MG can under effective control of MGC, obtain or obtain in real time the media data of appointment in advance, and use, thereby help alleviating the flow of backbone network as data cached; Reduce the client time-delay, improve the robustness of media server service.
Description of drawings
Fig. 1 is the sketch map of the proxy caching technical application scene that provides of prior art;
Fig. 2 is MG and the MGC networking sketch map that prior art provides;
Fig. 3 be the embodiment of the invention one provide obtain data cached method flow diagram;
Fig. 4 be the embodiment of the invention two provide obtain data cached method flow diagram;
Fig. 5 is the structure chart that obtains data cached system that the embodiment of the invention three provides.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
The embodiment of the invention is through the expansion gateway control protocol; In gateway control protocol, define buffer memory obtaining indication information; Carry in this buffer memory obtaining indication information and obtain the required parameter of media data; MG can obtain the media data of appointment according to these parameters, and the media data that obtains is carried out buffer memory.Through the expansion gateway control protocol; For MG realizes the proxy caching function strong support is provided; Make MG can under effective control of MGC, obtain or obtain in real time the media data of appointment in advance,, thereby help alleviating the flow of backbone network as data cached use; Reduce the client time-delay, improve the robustness of media server service.(Gateway Control Protocol GCP) mainly contains MGCP (MGCP, Media Gateway Control Protocol) and H.248/MeGaCo two kinds to the gateway control protocol of communicating by letter between MG and the MGC.
With agreement H.248 is example, and the last various resources of MG are terminal (Termination) by abstract representation.The terminal is divided into physics (Physical) terminal and interim (Ephemeral) terminal again; On behalf of some, the former have the physical entity of semipermanent existence; Time division multiplexing (Time Division Multiplex, TDM) passage etc., the public resource that on behalf of some provisional application, the latter discharge with the back for example; For example RTP (Real-time Transport Protocol, RTP) stream etc.In addition, represent MG whole with root (Root) terminal.Combination between the terminal is by the abstract context (Context) that is expressed as.Context can comprise a plurality of terminals, describes the correlation of terminal room with topology (Topology).For also associated terminals not taking place, be called the contextual special context of sky (Null) by one and represent with other terminal.
Based on the abstract model of agreement H.248, in fact continuing of calling be exactly to terminal and contextual operation.This operation is accomplished through the order between MGC and the MG (Command), request (Request) and response (Reply).Command parameter comprises interpolation (Add), revises (Modify), deletes (Subtract), moves (Move), audit value (AuditValue), auditability (AuditCapabilities), circular (Notify), service change (ServiceChange) etc.Command parameter is also referred to as descriptor (Descriptor), is classified as attribute (Property), signal (Signal), incident (Event), statistics (Statistic).Parameter with professional correlation polymerization in logic becomes bag (Package).
Easy in order to narrate, the embodiment of the invention is an example with the H.248 agreement in the gateway control protocol, and the technical scheme of the embodiment of the invention also is suitable for for MCGP.
Embodiment one
The embodiment of the invention one provides a kind of gateway control protocol of expanding to obtain data cached method; This method is at first expanded agreement H.248, definition cache prefetching (Cache Prefetch, CP) signal in agreement H.248; This cache prefetching signal carries and obtains the required signal parameter of media data in advance; MG obtains the media data of appointment in advance according to the signal parameter in this cache prefetching signal, and the media data that obtains is carried out buffer memory, can alleviate the flow of backbone network; Reduce the client time-delay, improve the robustness of media server service.As shown in Figure 3, the concrete steps of present embodiment are following:
Step 101:MGC sends modify request messages to MG; Indication MG obtains media data as data cached in advance to the media address (or media server) of appointment; Carry the cache prefetching signal in this modify request messages, carry in this cache prefetching signal and obtain the required signal parameter of media data in advance.
In the present embodiment, MGC can formulate the session cache policy, for example to specifying media data to obtain in advance as resource policy decision making function entity when receiving the indication of media session message or according to the media strategy rule that preserve this locality.So-called obtaining in advance is meant that in the client receiving media data, MG utilizes the idling-resource of media server and network, with follow-up data in advance download, with as data cached use.
In order to realize to the obtaining in advance of media data, need expand agreement H.248, at cache prefetching signal of protocol definition H.248, this cache prefetching signal carries and obtains the required signal parameter of media data in advance.MGC is carried at this cache prefetching signal in the modify request messages, and modify request messages is sent to MG, and the media data that indication MG obtains appointment in advance is as data cached use.
The cache prefetching signal can be defined in existing bag (Package) or the new bag; For example, expand a new bag, and should newly wrap the called after cache contents and support (Cache Content Support; CCS) bag; The cache prefetching indication is added in the cache contents support package, and at this moment, this cache prefetching signal can be represented with the form of " CCS/CP ".
The required signal parameter of media data that obtains in advance that carries in the face of the cache prefetching signal down is described in detail:
(Prefetch Content Identifier PCID), is used to identify media data and the media address that will obtain in advance to signal parameter one, prefetching content sign.This signal parameter can adopt unified resource sign (Uniform Resource Identifier; URID), internationalized resources sign (Internationalized Resource Identifier; IRID) or the content reference identification (Content Reference Identifier, CRID) etc. form is represented.Through the prefetching content sign, MGC can indicate MG to obtain the media data of appointment to the media address of appointment.
Signal parameter two: (Prefeteh Content Range PCR), is used to identify the scope of the media data of looking ahead to the prefetching content scope.Under most situation, the media data of looking ahead also needs not be entire media file, and is the some fragments or the part of media file, at this moment, can identify the concrete scope of the media data of looking ahead with this signal parameter of prefetching content scope.This signal parameter can comprise contents such as range format, corresponding scope value; (Normal Play Time, form NPT) refer to that the time of media content is gone up the absolute position with respect to beginning for example to represent conventional reproduction time; Or represent code zebra time (Universal Time Code; UTC) form refers to the absolute time according to Greenwich Mean Time (GMT, Greenwich Mean Time) expression; Also can be the form of representing frame number (Frame) or byte number (Byte), refer to the position of representing with frame number or byte number with respect to the starting position; It can also be the combination of time, frame number etc.; For example represent (the Society of Motion Picture and Television Engineers of SMPTE; SMPTE) form; The finger time goes up with respect to the starting position and is accurate to the position of frame level, adopt " time: divide: second: frame. subframe " form; Certainly also possibly be the form of other expression range information.Corresponding scope value can be an interval, comprises that first value is to all the effective values between second value.Default to semi-open interval, comprise first value, but do not comprise second value.
Signal parameter three, the prefetching content number of plies (Prefetch Content Layer, PCL).In the scene of application level coding techniques, media data is compressed into a plurality of layers, comprises a basic layer and a plurality of extension layer.Wherein, basic layer has comprised the data of media play gross, and extension layer can not carry out independent decoding, can only with basic layer be positioned at extension layer under it and combine and decode, improve the quality of media play.At this moment, this signal parameter of definition prefetching content number of plies sign in the cache prefetching signal is used to identify the number of plies of media data of looking ahead.
Signal parameter four: content location (Content Storage Location, CSL).In order to realize MG is gone up effective control of media data, MGC need indicate the memory location of the media data of looking ahead.At this moment, define this signal parameter of content location, this signal parameter identifies the physics or the logical storage location of the media data of looking ahead.The granularity of this signal parameter can be looked different application need and difference, and the MG that for example can identify appointment goes up the logical partitioning zone of buffer area, also can be concrete physical location indication, for example, and general cache district or interim buffer area etc.
Signal parameter five: the content stores sign (Content Storage Identifier, CSID).Media data for the ease of management buffer memory on MG; Need distribute a signal parameter that is called the content stores sign for the media data of buffer memory; This signal parameter can be the sign of a logic; The information such as physical location, logical identifier that also can comprise media content, in order to the related and location of the media data of sign buffer memory, promptly MGC and MG need set up and safeguard that prefetching content sign, content stores identify; And the mapping relations between the content location, so that the distribution of the media data of buffer memory is effectively controlled.
Signal parameter six: (Content Receive Address, CRA) sign are used to identify the address information that receives the media data of looking ahead, and comprise IP address and port etc. in the content reception address.
In practical application; Above-mentioned 6 signal parameters possibly not need to be carried at simultaneously in the cache prefetching signal; Can make up above-mentioned 6 signal parameters according to concrete needs, for example under the scene of non-layered media data, this signal parameter of prefetching content number of plies sign just can not used.At this moment; The form of modify request messages is following:: ccs/cp{pci=" xxx ", pcr=" and xxx ", csl=" and xxx "; Csi=" xxx "; Cda=" xxx ", wherein xxx represents the concrete value of each signal parameter respectively, specifically can be string format, character format or other form.
Step 102:MG receives modify request messages; Return the modification response message to MGC; Obtain media data according to signal parameter entrained in the cache prefetching signal in the modify request messages in advance to the media address (or media server) of appointment, and the media data that obtains is carried out buffer memory.
Need to prove; In the step 101 of present embodiment; MGC can not send modify request messages to MG; But send other message to MG, and for example adding request message or mobile request message etc., the signal and the signal parameter that carry in entrained signal and signal parameter and the modify request messages in these message are identical.Correspondingly, in step 102, MG obtains media data according to signal and the signal parameter in the message that receives to the media address of appointment in advance, and the media data that obtains is carried out buffer memory.
In the present embodiment; The cache prefetching signal belongs to a kind of in the cache prefetching indication; Cache prefetching indication and entrained parameter information are except the mode that can adopt signal and signal parameter defines; Can also adopt attribute (above-mentioned signal parameter information is defined as a plurality of property parameters respectively), and/or the mode of event argument (above-mentioned signal parameter information being defined as the event argument of certain incident respectively) defines; The cache prefetching signal goes for looking ahead in the scene of media data, when being included in the client receiving stream media or before any period.
Present embodiment is through expanding agreement H.248; H.248 defining a cache prefetching signal in the agreement, this cache prefetching signal carries and obtains the required signal parameter of media data in advance, and MG obtains the media data of appointment in advance according to signal parameter in this cache prefetching signal; And the media data that obtains carried out buffer memory; Can alleviate the flow of backbone network, reduce the client time-delay, improve the robustness of media server service.
Embodiment two
Different with the embodiment of the invention one is; H.248, the embodiment of the invention two is defining a content stores (Content Storage in the agreement; CS) signal; This content stores signal carries and obtains the required signal parameter of media data in real time, and MG obtains the also media data of the current carrying of buffer memory in real time according to the signal parameter in this content stores signal.As shown in Figure 4, the concrete steps of present embodiment are following:
Step 201:MGC sends to MG and revises (Modify) request message, carries the content stores signal in this modify request messages, and this content stores signal carries and obtains the required signal parameter of media data in real time.
In the present embodiment; MGC is as resource policy decision making function entity, and when session was set up and safeguarded, the media strategy that meeting is preserved according to this locality was regular; Formulate the cache policy of said session, for example need the media data that carry be obtained in real time.So-called obtaining in real time is meant that MG is sent to media server with request when first client initiation during to the request of certain specific medium data; MG carries out real-time buffer memory transmitting in the media data that media server receives to the client to media data, and like this, MG can use the media data of buffer memory to respond the similar request to hot spot data of subsequent client.
In order to realize to the obtaining in real time of media data, need expand agreement H.248, at content stores signal of protocol definition H.248, this content stores signal carries and obtains the required signal parameter of media data in real time.MGC is carried at this content stores signal in the modify request messages, and modify request messages is sent to MG, and indication MG obtains current carrying in real time.
This content stores signal can be defined in existing bag (Package) or the new bag, if it is belonged in the cache contents support package among the embodiment one, so, this content stores signal can be represented with the form of " CCS/CS ".
Below the signal parameter that carries in the content storage signal is described in detail:
Signal parameter one, context information, be used to identify the value range of the media data that will obtain in real time.Concrete definition is similar with the definition of the prefetching content scope in the indication of the cache prefetching among the embodiment 1, repeats no more.
Signal parameter two: content number of plies information, be used to identify the number of plies of the media data that will obtain in real time.Concrete definition is similar with the definition of the prefetching content number of plies in the indication of the cache prefetching among the embodiment 1, repeats no more.
Signal parameter three: content location, be used to identify the memory location of the media data that will obtain in real time; Concrete definition is similar with the definition of the content location in the cache prefetching indication among the embodiment 1, repeats no more.
Signal parameter four: content stores sign, be used to identify the identification information of the media data that will obtain in real time; Concrete definition is similar with the definition of the content stores sign in the cache prefetching indication among the embodiment 1, repeats no more.
Signal parameter five: preservation medium direction (Content Save Direction, CSD).Stream represents two-way media data in agreement H.248; May comprise the combination of multiple media resource in the media data of each direction again; For example be different medium type or media formats etc.; And typically refer to certain concrete media file as the media data of buffer memory, promptly corresponding to the media data of certain specific medium type or single medium form among the Stream.In order clearly to preserve the specified scope of media data, the direction that this signal parameter of medium direction identifies the media data of the buffer memory of wanting is preserved in definition, and the value of this signal parameter comprises Local (local terminal), Remote (far-end) and Both (both).Wherein, Local representes to preserve the media data of local terminal descriptor representative; It is the media data that local terminal receives from the opposite end; Remote representes to preserve the media data of remote descriptors representative, i.e. the media data that the local terminal of far-end reception sends, and Both representes to preserve simultaneously the two-way media data of local terminal descriptor and remote descriptors representative.
Signal parameter six: the preservation media item (Content Save Item, CSI).The concrete medium value that this signal parameter of media item further confirms the media data that institute will preserve is preserved in definition, and its type is that a character string is tabulated, and each character is exactly the sign of a media data; In order to concrete media data of unique identification, the value form be (XX, XX); XX is an integer; Like first medium value in the first group media data among (1,1) the sign SDP (Session Description Protocol, Session Description Protocol).
In practical application; Above-mentioned 6 signal parameters possibly not need to be carried at simultaneously in the content stores signal; Can make up above-mentioned 6 signal parameters according to concrete needs; For example, be not carried in the content stores signal with these two signal parameters of preservation media item if preserve the medium direction, then certain concrete media data is not specified in expression.In addition, according to actual needs, can increase other signal parameter newly.At last, above-mentioned 6 signal parameters can adopt the form (can certainly be other form, for example character format) of character string tabulation, realize obtaining in real time media data as data cached purpose.
Step 202:MG receives modify request messages, sends response message to MGC, obtains the media data of the appointment of current carrying in real time according to the signal parameter of the content stores signal in the modify request messages, and the media data that obtains is carried out buffer memory.
Need to prove; In the step 201 of present embodiment; MGC can not send modify request messages to MG; But send other message to MG, and for example adding request message or mobile request message etc., the content stores signal and the signal parameter that carry in entrained content stores signal and signal parameter and the modify request messages in these message are identical.Correspondingly, in step 202, MG obtains the media data of current carrying in real time according to the signal parameter in the message that receives, and the media data that obtains is carried out buffer memory.
In addition; The content stores signal belongs to a kind of in the content stores indication; Content stores indication and entrained parameter information can also define with the mode of attribute (above-mentioned signal parameter information is defined as a plurality of property parameters respectively) and/or event argument (above-mentioned signal parameter information being defined as the event argument of certain incident respectively) except the mode with signal and signal parameter defines.If foregoing storage indication and signal parameter wherein are applied to certain media data on the MG, and be then effective to this media data; If be applied to certain terminal on the MG, then be applicable to all media datas on this terminal.
H.248, present embodiment is through defining a content stores signal in the agreement; This content stores signal carries and obtains the required signal parameter of media data in real time; MG obtains the media data of current carrying in real time according to the signal parameter in this content stores signal, and the media data that obtains is carried out buffer memory, can alleviate the flow of backbone network; Reduce the client time-delay, improve the robustness of media server service.
Embodiment three
The embodiment of the invention three provides a kind of data cached system that obtains, and as shown in Figure 5, this system comprises:
Media Gateway Controller and WMG;
Media Gateway Controller generates request message, and request message is sent to WMG, and this request message carries buffer memory obtaining indication information, and this buffer memory obtaining indication information is used for the media data that indicating media gateway obtains needs and carries out buffer memory;
WMG receives request message, obtains the media data of needs according to the indication information in the request message, and the media data that obtains is carried out buffer memory.
Particularly, Media Gateway Controller comprises:
The request message generation module is used to generate request message, and this request message carries buffer memory obtaining indication information, and this buffer memory obtaining indication information is used for the media data that indicating media gateway obtains needs and carries out buffer memory;
Sending module is used for sending this request message to WMG.
Particularly, WMG comprises:
Receiver module is used for the request message that the receiving media gateway controller sends, and this request message carries buffer memory obtaining indication information, and the media data that this buffer memory obtaining indication information is used to indicate said WMG to obtain needs carries out buffer memory;
Acquisition module is used for obtaining according to Indication message the media data of needs;
Preserve module, be used for the media data that buffer memory obtains.
The embodiment of the invention is through the expansion gateway control protocol; In gateway control protocol, define buffer memory obtaining indication information, strong support is provided, make MG can under effective control of MGC, obtain the media data of appointment for MG realizes the proxy caching function; And the media data that obtains carried out buffer memory; Thereby help alleviating the flow of backbone network, reduce the client time-delay, improve the robustness of media server service.
The technical scheme that above embodiment provides can realize that software is stored on the storage medium that can read through hardware and software, like the floppy disk of computer, and hard disk or CD etc.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. one kind is obtained data cached method, it is characterized in that, said method comprises:
The buffer memory obtaining indication information that WMG receiving media gateway controller sends; Carry in the said buffer memory obtaining indication information and obtain the required parameter of media data, the media data that is used to indicate said WMG to obtain in advance or obtains needs in real time carries out buffer memory;
Said WMG obtains said media data according to said buffer memory obtaining indication information, and said media data is carried out buffer memory.
2. as claimed in claim 1ly obtain data cached method, it is characterized in that said buffer memory obtaining indication information is carried through signal, attribute or the incident of gateway control protocol.
3. as claimed in claim 1ly obtain data cached method, it is characterized in that said buffer memory obtaining indication information is the cache prefetching indication information;
Said WMG obtains said media data according to said buffer memory obtaining indication information, and with the step that said media data carries out buffer memory is:
Said WMG obtains said media data according to said cache prefetching indication information to the media address of appointment in advance, and said media data is carried out buffer memory.
4. as claimed in claim 3ly obtain data cached method, it is characterized in that, carry one of following information in the said cache prefetching indication information at least:
Prefetching content identification information, prefetching content number of plies information, prefetching content range information, content location information, content stores identification information and content reception address identification message;
Said prefetching content identification information is used to identify the look ahead sign and the media address of said media data;
Said prefetching content number of plies information is used to identify the number of plies of said media data of looking ahead;
Said prefetching content range information is used to identify the scope of said media data of looking ahead;
Said content location information is used to identify the logic OR physical storage locations of said media data of looking ahead;
Said content stores identification information is used to identify the look ahead association and the locating information of said media data;
Said content reception address information is used to identify the address that receives the said media data of looking ahead.
5. as claimed in claim 1ly obtain data cached method, it is characterized in that said buffer memory obtaining indication information is the content stores indication information;
Said WMG obtains said media data according to said buffer memory obtaining indication information, and with the step that said media data carries out buffer memory is:
Said WMG obtains the said media data of current carrying in real time according to said content stores indication information, and the said media data that obtains is carried out buffer memory.
6. as claimed in claim 5ly obtain data cached method, it is characterized in that, carry one of following information in the said content stores indication information at least:
Context information, content number of plies information, content location information, content stores identification information, preservation medium directional information and preservation media item information;
Said context information, be used to identify the scope of the said media data that will obtain in real time;
Said content number of plies information, be used to identify the number of plies information of the said media data that will obtain in real time;
Said content location, be used to identify the physics or the logical storage location of the said media data that will obtain in real time;
Said content stores identification information, be used to identify the association and the locating information of the said media data that will obtain in real time;
Said preservation medium directional information, be used to identify to obtain the directional information of said media data in real time;
Said preservation media item information, be used to identify to obtain the concrete media item of said media data in real time.
7. a Media Gateway Controller is characterized in that, said Media Gateway Controller comprises:
The request message generation module; Be used to generate request message; Described request message is carried buffer memory obtaining indication information, carries in the said buffer memory obtaining indication information and obtains the required parameter of media data, and the media data that is used to indicate said WMG to obtain in advance or obtains needs in real time carries out buffer memory;
Sending module is used for sending described request message to WMG.
8. a WMG is characterized in that, said WMG comprises:
Receiver module; Be used for the request message that the receiving media gateway controller sends; Described request message is carried buffer memory obtaining indication information; Carry in the said buffer memory obtaining indication information and obtain the required parameter of media data, the media data that is used to indicate said WMG to obtain in advance or obtains needs in real time carries out buffer memory;
Acquisition module is used for obtaining said media data according to said buffer memory obtaining indication information;
Preserve module, be used for the media data that buffer memory obtains.
9. one kind is obtained data cached system, it is characterized in that, said system comprises:
Media Gateway Controller and WMG;
Said Media Gateway Controller generates request message; And described request message sent to said WMG; Described request message is carried buffer memory obtaining indication information; Carry in the said buffer memory obtaining indication information and obtain the required parameter of media data, the media data that is used to indicate said WMG to obtain in advance or obtains needs in real time carries out buffer memory;
Said WMG receives described request message, obtains said media data according to the buffer memory obtaining indication information in the described request message, and the media data that obtains is carried out buffer memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100954156A CN101562583B (en) | 2008-04-18 | 2008-04-18 | Method, system and device for obtaining buffer memory data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100954156A CN101562583B (en) | 2008-04-18 | 2008-04-18 | Method, system and device for obtaining buffer memory data |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101562583A CN101562583A (en) | 2009-10-21 |
| CN101562583B true CN101562583B (en) | 2012-02-15 |
Family
ID=41221208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100954156A Expired - Fee Related CN101562583B (en) | 2008-04-18 | 2008-04-18 | Method, system and device for obtaining buffer memory data |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101562583B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101848156A (en) * | 2010-05-19 | 2010-09-29 | 苏州迈科网络安全技术有限公司 | Method of FLV (Flash Video) flow localization |
| CN111565257B (en) * | 2020-04-14 | 2022-11-08 | 深圳震有科技股份有限公司 | Transcoding method, device, system and medium of fax terminal |
| CN113343088A (en) * | 2021-06-09 | 2021-09-03 | 北京奇艺世纪科技有限公司 | Data processing method, system, device, equipment and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1750503A (en) * | 2004-09-17 | 2006-03-22 | 大唐高鸿数据网络技术股份有限公司 | Device and its method for increasing multimedia communication quality by monitoring RTP/RTCP stream |
| CN101043473A (en) * | 2006-03-20 | 2007-09-26 | 华为技术有限公司 | Data service transmission method |
-
2008
- 2008-04-18 CN CN2008100954156A patent/CN101562583B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1750503A (en) * | 2004-09-17 | 2006-03-22 | 大唐高鸿数据网络技术股份有限公司 | Device and its method for increasing multimedia communication quality by monitoring RTP/RTCP stream |
| CN101043473A (en) * | 2006-03-20 | 2007-09-26 | 华为技术有限公司 | Data service transmission method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101562583A (en) | 2009-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108141455B (en) | Deadline signaling for streaming of media data | |
| US20100268761A1 (en) | Methods and systems for delivery of media over a network | |
| KR20030056701A (en) | Apparatus and method for providing multimedia streaming service by using point-to-point connection | |
| CN101267541B (en) | A stream media distribution server applicable to online VoD or living broadcast | |
| CN106453451A (en) | Shared adaptive content data cache network (SADCN) | |
| CN111193767B (en) | Request data sending method and device and clustered server system | |
| CN101562583B (en) | Method, system and device for obtaining buffer memory data | |
| CN100576906C (en) | A kind of Web content transmission control system and method | |
| CN108632679A (en) | A kind of method of multi-medium data transmission and a kind of regarding networked terminals | |
| CN110213334A (en) | A kind of transmission method and device of shared file | |
| CN101471850B (en) | Method for identifying medium resource, medium gateway and medium gateway controller | |
| CN111182024B (en) | Data synchronization method, device and storage medium | |
| CN105100147A (en) | Controlmethod and device based on separation of content provider and service provider | |
| WO2020195705A1 (en) | Information processing device, information processing method, and program | |
| CN101325564B (en) | Method, apparatus and system for selecting virtual medium gateway | |
| CN101552746B (en) | Method and device for controlling publication and application of package | |
| CN103297666A (en) | Video monitoring method, device and system achieved based on universal plug and play | |
| CN101534288A (en) | Method and system for cache management and media gateway | |
| CN104429089A (en) | Method of and apparatus for determining composite video services stream | |
| WO2009082903A1 (en) | Method for adjusting signal speed, media gateway and media gateway controller | |
| CN101471870B (en) | Method and device for obtaining resource expiration information | |
| CN101552713B (en) | Method and device for transferring package base and extending relationship | |
| CN101389010B (en) | Player and playing method | |
| US20100265958A1 (en) | Method for exchanging range format support information, media gateway and media gateway controller | |
| CN115297334B (en) | System, method and equipment for realizing narrow-band transmission video based on cloud edge cooperative transcoding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120215 Termination date: 20130418 |