CN104660518A - Data transmission control method and device - Google Patents
Data transmission control method and device Download PDFInfo
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- CN104660518A CN104660518A CN201310596631.XA CN201310596631A CN104660518A CN 104660518 A CN104660518 A CN 104660518A CN 201310596631 A CN201310596631 A CN 201310596631A CN 104660518 A CN104660518 A CN 104660518A
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Abstract
The invention discloses a data transmission control method and device, and aims to solve the problems that in the prior art, during data transmission of a point-to-point streaming media system, streaming media data acquired on a request node is incontinuous, and thus video playing on the request node is not smooth and the system performance is reduced. The data transmission control method comprises the following steps: after a data node receives a data request message sent by the request node, acquiring a data block needed by the request node based on the data request message, dividing the data block into a plurality of single pieces, and acquiring a target request node according to the request node, and sending the single pieces to the target request node by the data node. According to the technical scheme, after the data node divides the data block requested by the request node into the single pieces, and all the single pieces are sequentially transmitted to the corresponding request node, the problem of network congestion caused by a relatively small network bandwidth is avoided, the video playing smoothness of the request node is guaranteed, and the system performance is effectively improved.
Description
Technical field
The present invention relates to multimedia technology field, particularly relate to a kind of method and device of control data transmission.
Background technology
Along with the develop rapidly of multimedia technology, various ways can be adopted to carry out transmission and the broadcasting of Streaming Media, wherein, P2P(Peer to Peer; Point-to-point) stream media system is a kind of conventional streaming media and Play System.
In existing P2P stream media system, streaming medium content is cut into multiple data block (chunk), using each data block as the base unit of transmission of flow media data, thus complete continuous print data flow and transmit between node (Peer), wherein, each data block is represented by unique chunk id.Sharing and exchanging the buffered message (being called for short BM) all depending on the description node buffer status exchanged between node of programme content, namely completes sharing of programme content by buffered message and exchanges.
At present, in P2P stream media system, if requesting node needs to carry out presenting of the Streaming Medias such as video, then need the back end to having stream medium data corresponding to this video to send a request message, and the stream medium data that requesting node sends according to back end present corresponding video to user.For the data transmission procedure between above-mentioned requesting node and back end, in prior art, usually adopt back end to adopt the mode to greatest extent owned stream medium data being sent to requesting node, send stream medium data to requesting node.When adopting technique scheme to carry out transfer of data, due to the restriction of the network bandwidth, if there is a large amount of stream medium data requests in some moment, then owned stream medium data is still sent to requesting node and may causes the congested of this moment network by back end to greatest extent, and then cause requesting node obtain the discontinuous of stream medium data, make requesting node video playback not smooth, greatly reduce systematic function.
As can be seen here, in prior art in the transmitting procedure of stream medium data, if the network bandwidth is less, there is requesting node acquisition stream medium data discontinuous, cause requesting node video playback not smooth, reduce the problem of systematic function.
Summary of the invention
The embodiment of the present invention provides a kind of method and device of control data transmission, in order to solve in prior art in the transmitting procedure of the data of point-to-point stream media system, the requesting node existed obtains stream medium data discontinuous, cause video playback on requesting node not smooth, reduce the problem of systematic function.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A method for control data transmission, is applied in point-to-point stream media system, comprises:
Back end receives the data request information that requesting node sends;
Described back end, according to described data request information, obtains the data block that described request node is asked;
Described back end divides described data block, generates multiple monolithic, and using described request node as destination request node, and send described multiple monolithic to described destination request node.
Further, before described back end divides described data block, described back end detects current time data transmission bauds; , and described current time data transmission bauds and predetermined threshold value are compared; And compare described current time data transmission bauds and be less than predetermined threshold value.
Optionally, described back end divides described data block, generates multiplely to take the monolithic that storage size is 188*128K byte.
Adopt technique scheme, the data block of the base unit as transmission of flow media data is carried out Further Division, the multiple monolithics generated are sent to requesting node, avoid the network congestion phenomenon owing to causing when multiple data block sends simultaneously, improve systematic function, ensure that requesting node can receive data continuously, enable user obtain the video of smooth playing.
Optionally, when the number of the described request node sending data request information to described back end is multiple, described back end obtains monolithic data transmission speed corresponding when sending corresponding monolithic to each requesting node; Wherein, described monolithic data transmission speed is the discreet value obtained according to current time network quality parameters; When described monolithic data transmission speed is less than described predetermined threshold value, and the number sending the described request node of data request information to described back end is when being greater than default interstitial content threshold value, described back end screens multiple described request node, obtain destination request node, wherein, the number of described destination request node equals described default interstitial content threshold value; Described back end sends described multiple monolithic to described destination request node.
Optionally, described back end obtains the performance parameter of each requesting node respectively, and sorts to all requesting nodes according to the size of described performance parameter, generates requesting node queue; Described back end according to described default interstitial content threshold value, according to the order that performance parameter is descending, select target requesting node successively from described request node queue.
Adopt technique scheme, while the data block of asking requesting node divides, control the number of the requesting node of access data node, further avoid the network congestion phenomenon because request msg while of a large amount of requesting node causes, thus the Reliable guarantee fluency of requesting node institute displaying video, improve systematic function.
A device for control data transmission, is applied in point-to-point stream media system, comprises:
Receiving element, for receiving the data request information that requesting node sends;
Acquiring unit, for according to described data request information, obtains the data block that described request node is asked;
Transmitting element, for dividing described data block, generates multiple monolithic, and using described request node as destination request node, and send described multiple monolithic to described destination request node.
Further, the device of above-mentioned control data transmission also comprises detecting unit, for: before described data block is divided, detect current time data transmission bauds, and described current time data transmission bauds and predetermined threshold value are compared; And compare described current time data transmission bauds and be less than predetermined threshold value.
Optionally, described transmitting element, specifically for: described data block is divided, generates and multiplely take the monolithic that storage size is 188*128K byte.
Adopt technique scheme, the data block of the base unit as transmission of flow media data is carried out Further Division, the multiple monolithics generated are sent to requesting node, avoid the network congestion phenomenon owing to causing when multiple data block sends simultaneously, improve systematic function, ensure that requesting node can receive data continuously, enable user obtain the video of smooth playing.
Optionally, transmitting element, for: when the number of the described request node sending data request information to described back end is multiple, obtain monolithic data transmission speed corresponding when sending corresponding monolithic to each requesting node; When described monolithic data transmission speed is less than described predetermined threshold value, and the number sending the described request node of data request information to described back end is when being greater than default interstitial content threshold value, multiple described request node is screened, obtain destination request node, wherein, the number of described destination request node equals described default interstitial content threshold value; Described multiple monolithic is sent to described destination request node; Wherein, described monolithic data transmission speed is the discreet value obtained according to current time network quality parameters.
Optionally, described transmitting element, specifically for: the performance parameter obtaining each requesting node respectively, and according to the size of described performance parameter, all requesting nodes are sorted, generate requesting node queue; According to described default interstitial content threshold value, according to the order that performance parameter is descending, select target requesting node successively from described request node queue.
Adopt technique scheme, while the data block of asking requesting node divides, control the number of the requesting node of access data node, further avoid the network congestion phenomenon because request msg while of a large amount of requesting node causes, thus the Reliable guarantee fluency of requesting node institute displaying video, improve systematic function.
In the embodiment of the present invention, after back end receives the data request information of requesting node transmission, namely the data block required for requesting node is obtained based on this data request information, and this data block is divided into multiple monolithic, and obtaining destination request node according to above-mentioned requesting node, this monolithic is sent to this destination request node by back end.Adopt technical solution of the present invention, after the data block that requesting node is asked by back end is divided into multiple monolithic, all monolithics are transferred to corresponding requesting node successively, thus avoid due to less the caused network congestion problem of the network bandwidth, ensure that requesting node video playback is smooth, effectively improve systematic function.
Accompanying drawing explanation
Fig. 1 is point-to-point Frame of Streaming Media System schematic diagram in the embodiment of the present invention;
Fig. 2 is the detail flowchart of control data transmission in the embodiment of the present invention;
Fig. 3 is the detail flowchart of control data transmission under embody rule scene in the embodiment of the present invention;
Fig. 4 is the apparatus structure schematic diagram of control data transmission in the embodiment of the present invention.
Embodiment
In order to solve in prior art in the transmitting procedure of the data of point-to-point stream media system, on the requesting node of existence, video playback is not smooth, reduces the problem of systematic function.In the embodiment of the present invention, after back end receives the data request information of requesting node transmission, namely the data block required for requesting node is obtained based on this data request information, and this data block is divided into multiple monolithic, and obtaining destination request node according to above-mentioned requesting node, this monolithic is sent to this destination request node by back end.Adopt technical solution of the present invention, after the data block that requesting node is asked by back end is divided into multiple monolithic, all monolithics are transferred to corresponding requesting node successively, thus avoid due to less the caused network congestion problem of the network bandwidth, ensure that requesting node video playback is smooth, effectively improve systematic function.
The embodiment of the present invention is applied in point-to-point stream media system, consults and Figure 1 shows that point-to-point stream media system structural representation in the embodiment of the present invention, be described in detail below in conjunction with accompanying drawing to the preferred embodiment of the present invention.
Consult shown in Fig. 2, in the embodiment of the present invention, the detailed process of control data transmission is:
Step 200: back end receives the data request information that requesting node sends.
In the embodiment of the present invention, multiple node is comprised in point-to-point stream media system, the node of request msg is called requesting node herein, the node of sharing data is called back end, back end and requesting node are relative concept, namely be requesting node when a node requests data, be back end when a node shares owned data with other nodes.
In above-mentioned point-to-point stream media system, a back end can by owned data sharing to one or more requesting node, when requesting node needs stream medium data, namely send data request information to the back end having this stream medium data, in this data request information, carry the stream medium data that the identification information of requesting node and this requesting node are asked.
Step 210: back end, according to above-mentioned data request information, obtains the data block that above-mentioned requesting node is asked.
In the embodiment of the present invention, after back end receives the data request information of requesting node transmission, namely according to the stream medium data that the requesting node carried in this data request information is asked, generate the data block that requesting node is asked, wherein, data block is the base unit of transmission of flow media data, and the number of this data block is generally multiple.
Step 220: back end divides above-mentioned data block, generates multiple monolithic, and using above-mentioned requesting node as destination request node, and send above-mentioned multiple monolithic to above-mentioned destination request node.
In the embodiment of the present invention, in order to alleviate system burden when data block to be sent to requesting node by back end, optionally, back end divides each data block being sent to requesting node, multiple monolithic is all generated for each data block, using above-mentioned requesting node as destination request node, and the plurality of monolithic is sent to above-mentioned destination request node successively according to predetermined period.Wherein, shared by each monolithic, the size of memory space is 188*128K byte, the chunk id that multiple monolithics that data block carries out dividing rear acquisition are all endowed this data block identifies, for the ease of this to individual multiple monolithic, each monolithic can give different numberings after chunk id identifies; This predetermined period can pre-set as the case may be, and the duration in each cycle also can pre-set according to concrete condition.
Further, when system mode allows, the data block that back end sends is not divided, only just above-mentioned data block is divided when meeting pre-conditioned, be specially: back end detects current time data transmission bauds, namely corresponding during back end detection current time transmission data block data transmission bauds; When above-mentioned current time data transmission bauds is less than predetermined threshold value, divide each data block of above-mentioned requesting node request, wherein, this predetermined threshold value can pre-set according to concrete network quality parameters (as bandwidth etc.).Adopt technique scheme, the data block of the base unit as transmission of flow media data is carried out Further Division, the multiple monolithics generated are sent to corresponding requesting node successively, avoid the network congestion phenomenon owing to causing when multiple data block sends simultaneously, improve systematic function, ensure that requesting node can receive data continuously, enable user obtain the video of smooth playing.
Further, in above process, if the number of requesting node is multiple, then after back end divides data block, obtain monolithic data transmission speed corresponding when transmitting monolithic, and be reportedly input into row control according to the number logarithm of monolithic data transmission speed and requesting node, be specially: back end obtains monolithic data transmission speed; When this monolithic data transmission speed is still less than predetermined threshold value, and the number of requesting node is when being greater than default interstitial content threshold value, multiple requesting node is screened, obtain destination request node, wherein, preset interstitial content threshold value can pre-set as the case may be, and the number of destination request node equals above-mentioned default interstitial content threshold value; Above-mentioned multiple monolithic is sent to corresponding destination request node according to predetermined period; Above-mentioned monolithic data transmission speed is the discreet value obtained according to current time network quality parameters, and optionally, above-mentioned monolithic data transmission speed can be above-mentioned current time data transmission bauds.And for the non-targeted requesting node in above-mentioned requesting node, all data blocks that each non-targeted requesting node is asked are sent to this each non-targeted requesting node after all data blocks that each destination request node is asked are sent to this each destination request node by back end; Or back end sends request of data failed message directly to each non-targeted requesting node, notify that all non-targeted requesting nodes send data request information to back end again in the next moment.
Optionally, back end obtains the performance parameter of each requesting node respectively, and sorts to above-mentioned multiple requesting node according to the size of this performance parameter, generates requesting node queue; According to default interstitial content threshold value, according to the order that performance parameter is descending, select target requesting node successively from above-mentioned requesting node queue.Multiple monolithic is sent to corresponding destination request node according to predetermined period by back end.Wherein, the performance parameter of any one requesting node comprises the parameter such as Account Type rank, account consumption grade of this any one node, and the result that the performance parameter of this any one requesting node obtains after can suing for peace for the weight coefficient that above-mentioned different parameters is corresponding with it.Such as, if the performance parameter Bi of any one requesting node only comprises the parameters such as Account Type rank b1, the account consumption grade b2 of this any one requesting node, then Bi=b1 ' * b1+b2 ' * b2, b1 ' are the weight coefficient of Account Type rank, and b2 ' is the weight coefficient of account consumption grade.
In the embodiment of the present invention, the comparative result of current time data transmission bauds and predetermined threshold value can adopt as trigger condition and above-mentionedly to divide the data block that requesting node is asked by back end respectively, and using the comparative result of the number of requesting node and default interstitial content threshold value simultaneously as trigger condition, the number of requesting node is controlled, the transfer of data in dominating pair of vertices point stream media system; Optionally, back end can also need not obtain the comparative result of above-mentioned current time data transmission bauds and predetermined threshold value, and the comparative result of the number of the requesting node of access data node and default interstitial content threshold value, and directly the data block of requesting node request is divided, control the number of the requesting node of access data node simultaneously.
Adopt technique scheme, while the data block of asking requesting node divides, control the number of the requesting node of access data node, further avoid the network congestion phenomenon because request msg while of a large amount of requesting node causes, thus the Reliable guarantee fluency of requesting node institute displaying video, improve systematic function.
Below in conjunction with concrete application scenarios, to comprise a back end and multiple requesting node in point-to-point stream media system, introduce the process to the control data transmission in point-to-point stream media system in detail.
Consult shown in Fig. 3, the detailed process of control data transmission is:
Step 300: back end receives the data request information that each requesting node sends respectively.
Step 310: request of data nodal test current time data transmission bauds, and judge whether this current time data transmission speed is greater than predetermined threshold value, if so, perform step 320; Otherwise, perform step 330.
Step 320: back end, respectively according to each data request information above-mentioned, obtains the data block that each requesting node above-mentioned is asked, and this data block is sent to corresponding requesting node.
Step 330: back end, according to each data request information above-mentioned, obtains the data block that each requesting node above-mentioned is asked, and divides each data block respectively, generates corresponding multiple monolithic.
Step 340: back end obtains monolithic data transmission speed when sending the monolithic of the data block of its request to each requesting node.
Step 350: back end judges whether above-mentioned monolithic data transmission speed is greater than predetermined threshold value, if so, performs step 360; Otherwise, perform step 370.
Step 360: back end using above-mentioned requesting node as destination request node, and according to predetermined period to each destination request node send corresponding multiple monolithic.
Step 370: back end is according to default interstitial content threshold value, and the performance parameter of each requesting node, obtains destination request node, and sends corresponding multiple monolithic according to predetermined period to each destination request node.
Based on technique scheme, consult shown in Fig. 4, the embodiment of the present invention also provides a kind of device of control data transmission, comprises receiving element 40, acquiring unit 41, and transmitting element 42, wherein:
Receiving element 40, for receiving the data request information that requesting node sends;
Acquiring unit 41, for according to above-mentioned data request information, obtains the data block that requesting node is asked;
Transmitting element 42, for dividing above-mentioned data block, generates multiple monolithic, and using above-mentioned requesting node as destination request node, and send above-mentioned multiple monolithic to this destination request node.
Further, the device of above-mentioned control data transmission also comprises detecting unit 43, for: before above-mentioned data block is divided, detect current time data transmission bauds, and current time data transmission bauds and predetermined threshold value are compared; And compare current time data transmission bauds and be less than predetermined threshold value.
In sum, in the embodiment of the present invention, back end receives the data request information that requesting node sends; Back end, according to above-mentioned data request information, obtains the data block that above-mentioned requesting node is asked; Back end divides above-mentioned data block, generate multiple monolithic, control the number of the requesting node of access data node simultaneously, according to the performance parameter of each requesting node, requesting node is screened, obtain destination request node, and according to predetermined period, the plurality of monolithic is sent to corresponding destination request node successively.Adopt technical solution of the present invention, after the data block that requesting node is asked by back end is divided into multiple monolithic, all monolithics are transferred to requesting node successively, thus avoid due to less the caused network congestion problem of the network bandwidth, ensure that requesting node video playback is smooth, effectively improve systematic function.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a method for control data transmission, is applied in point-to-point stream media system, it is characterized in that, comprising:
Back end receives the data request information that requesting node sends;
Described back end, according to described data request information, obtains the data block that described request node is asked;
Described back end divides described data block, generates multiple monolithic, and using described request node as destination request node, and send described multiple monolithic to described destination request node.
2. the method for claim 1, is characterized in that, described back end comprises before dividing described data block further:
Described back end detects current time data transmission bauds, and described current time data transmission bauds and predetermined threshold value is compared; And
Compare described current time data transmission bauds and be less than predetermined threshold value.
3. method as claimed in claim 2, it is characterized in that, described back end divides described data block, generates multiple monolithic, specifically comprises:
Described back end divides described data block, generates multiplely to take the monolithic that storage size is 188*128K byte.
4. method as claimed in claim 2 or claim 3, is characterized in that, when the number of the described request node sending data request information to described back end is multiple, sends described multiple monolithic, specifically comprise to described destination request node:
Described back end obtains monolithic data transmission speed corresponding when sending corresponding monolithic to each requesting node; Wherein, described monolithic data transmission speed is the discreet value obtained according to current time network quality parameters;
When described monolithic data transmission speed is less than described predetermined threshold value, and the number sending the described request node of data request information to described back end is when being greater than default interstitial content threshold value, described back end screens multiple described request node, obtain destination request node, wherein, the number of described destination request node equals described default interstitial content threshold value;
Described back end sends described multiple monolithic to described destination request node.
5. method as claimed in claim 4, it is characterized in that, described back end screens described multiple requesting node, obtains destination request node, specifically comprises:
Described back end obtains the performance parameter of each requesting node respectively, and sorts to all requesting nodes according to the size of described performance parameter, generates requesting node queue;
Described back end according to described default interstitial content threshold value, according to the order that performance parameter is descending, select target requesting node successively from described request node queue.
6. a device for control data transmission, is applied in point-to-point stream media system, it is characterized in that, comprising:
Receiving element, for receiving the data request information that requesting node sends;
Acquiring unit, for according to described data request information, obtains the data block that described request node is asked;
Transmitting element, for dividing described data block, generates multiple monolithic, and using described request node as destination request node, and send described multiple monolithic to described destination request node.
7. device as claimed in claim 6, is characterized in that, also comprise detecting unit, for:
Before described data block is divided, detect current time data transmission bauds, and described current time data transmission bauds and predetermined threshold value are compared; And compare described current time data transmission bauds and be less than predetermined threshold value.
8. device as claimed in claim 7, is characterized in that, described transmitting element, specifically for:
Described data block is divided, generates and multiplely take the monolithic that storage size is 188*128K byte.
9. device as claimed in claim 7 or 8, is characterized in that, described transmitting element, for:
When the number of the described request node sending data request information to described back end is multiple, obtain monolithic data transmission speed corresponding when sending corresponding monolithic to each requesting node; When described monolithic data transmission speed is less than described predetermined threshold value, and the number sending the described request node of data request information to described back end is when being greater than default interstitial content threshold value, multiple described request node is screened, obtain destination request node, wherein, the number of described destination request node equals described default interstitial content threshold value; Described multiple monolithic is sent to described destination request node; Wherein, described monolithic data transmission speed is the discreet value obtained according to current time network quality parameters.
10. device as claimed in claim 9, is characterized in that, described transmitting element, specifically for:
Obtain the performance parameter of each requesting node respectively, and according to the size of described performance parameter, all requesting nodes are sorted, generate requesting node queue; According to described default interstitial content threshold value, according to the order that performance parameter is descending, select target requesting node successively from described request node queue.
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| CN101562635A (en) * | 2009-05-15 | 2009-10-21 | 中兴通讯股份有限公司 | Method and player for mobile streaming media on demand |
| CN102394899A (en) * | 2011-04-07 | 2012-03-28 | 传聚互动(北京)科技有限公司 | On-demand system and method for improving file downloading speed |
| CN103281382A (en) * | 2013-05-31 | 2013-09-04 | 合一网络技术(北京)有限公司 | Method and node for file transfer based on p2p |
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| CN101562635A (en) * | 2009-05-15 | 2009-10-21 | 中兴通讯股份有限公司 | Method and player for mobile streaming media on demand |
| CN102394899A (en) * | 2011-04-07 | 2012-03-28 | 传聚互动(北京)科技有限公司 | On-demand system and method for improving file downloading speed |
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