CN102546549A - Method, system and device for data transmission - Google Patents
Method, system and device for data transmission Download PDFInfo
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Abstract
The invention provides a method, a system and a device for data transmission, which include that a content server (CS) deployed in a virtual platform is replaced with signaling server computer system simulation (CSS) and data server computerized standard data (CSD), and separation of signaling processing and a data transmission function of the CS is achieved. By means of a method that when the CSS deployed in the virtual platform receives signals, the CSD which is not deployed in the virtual platform is instructed to finish the data transmission, the problem that translation time of a virtual machine is prolonged caused by the fact that the data transmission function in the CS covers a large amount of network bandwidth and the problem that a large amount of downloaded data are lost when a large amount of network data pass through the CS are solved. Simultaneously, the problems of increasing burden of a virtual layer, probability of system error and network delay caused by the fact that during a process when users download data from the CS and the CS updates resource, data transmission needs to pass through the virtual layer are solved.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of data transmission method, system and equipment.
Background technology
Streaming Media is meant the continuous real-time medium that in network, use the stream transmission mode, like multimedia files such as video, audio frequency.The stream transmission mode is that the whole multimedia file is compressed and is divided into compressed package one by one through special mode, by video server to continuous, the real-time transmission of client.
Present stream media system mainly is divided into server/customer end (client/server, C/S) pattern and point-to-point (Peer-to-Peer, P2P) pattern, CS pattern are meant that all streaming media resources all obtain from streaming media server.The P2P pattern is meant utilizes that each client node is resource acquisition person in the P2P network, also is the characteristic of resource provider simultaneously, realizes from the client node download media resource, thereby alleviates the burden of media server.
No matter be CS pattern or P2P pattern, all need media server in the stream media system, the content source that media server stores is a large amount of, and the request of customer in response end are sent media resource to client.Because the video data volume is bigger in the streaming media service, the hard disk of media server itself is difficult to satisfy the demands, and therefore, in existing stream media system, leaves video data in special backstage storage system, and general, this backstage storage system is a disk array.As shown in Figure 1, be the structural representation of the stream media system that adopts the P2P pattern, Resource TOC index server (Tracker) is used for writing down the streaming media resource that each node of this stream media system (comprising client and media server) comprises among Fig. 1; According to the streaming media resource that comprises in each node; Generation include the node of same streaming media resource list information (resource index information, Peerlist), the indication client is from the node downloaded resources of the streaming media resource that comprises these client needs; Content server (Content Server; CS) be media server, disk array is used for storing the video data of CS, content source server (Source Server; SS) the main content of being responsible for newly issuing pushes to CS; Port (portal) server is used for intuitively representing streaming media resource to the user, and the user logins the streaming media resource that the selection of portal server needs download through client, obtains the sign of this streaming media resource.
Client flow process of downloaded resources from CS mainly may further comprise the steps in the stream media system of employing P2P pattern:
The streaming media resource that the first step, user need download through the selection of client login portal server, the portal server returns the sign of this resource to client.
Second step, client sends download request to Tracker, carries the sign of the resource that client need download in the described request, and Tracker returns the Peerlist of the resource that includes this sign correspondence to this client.
The Peer list that the 3rd step, client are returned according to Tracker, the content server request downloaded resources in Peer list.
The 4th step, content server read the resource that client-requested is downloaded through private network (local area network (LAN) as shown in Figure 1) from disk array.
The 5th step, content server are given client through public network with the resource forwarding that reads.
SS mainly may further comprise the steps to the flow process that CS pushes resource in the stream media system of employing P2P pattern:
The first step, SS send the request of propelling movement to CS, carry the propelling movement resource identification in the described request.
Second step, content server obtain from SS and push the corresponding resource of resource identification.
The 3rd step, content server are saved to disk array through the resource that private network (local area network (LAN) as shown in Figure 1) will obtain from SS.
Distributed business network (Distributed Service Network; DSN) stream media system adopts the P2P pattern; And in the design of DSN stream media system, CS is deployed in virtual platform, is illustrated in figure 2 as the structural representation of DSN stream media system; Thereby utilize virtualized characteristic, reach following effect:
The first, CS can with other operation system network elements physical platform altogether, other operation systems are meant to have to the different occupancy mode of resource or with stream media system with stream media system to have the system of different user models, thereby reach the effect of server polymerization.
The second, dynamically adjust the virtual resource of distributing to CS according to the visit capacity of different CS,, realize the physical resource reasonable distribution to prevent the redundancy of physical resource.
Three, a plurality of resources occupation rates are lower CS is aggregated in identical virtual machine, and closes idle physical machine, to reach the effect of energy-saving and emission-reduction.
In DSN stream media system as shown in Figure 2, there is following problem:
1, the CS server is except the Download Server as client, and for the client provides outside the download service, also need carry out following function: streaming medium content obtains and handles, and Bitmap (resource message bit pattern) is mutual to be deleted with management, streaming medium content and report etc.
CS in the DSN stream media system is deployed in virtual platform; Provide download service to belong to the function of data plane and take a large amount of network bandwidths because CS is a client; Therefore; When carrying out virtual machine (vm) migration, it is synchronous to have a large amount of network-cachings and relevant internal memory between source virtual machine and target virtual machine, can cause the elongation of virtual machine (vm) migration time.
Simultaneously; In the process of virtual machine (vm) migration, have of short duration virtual machine and work as machine, when a large amount of network datas are passed through CS; Can lose a large amount of data download; Possibly cause losing or retransmitting of packet, when having only a CS, possibly cause client can't realize the complete download of resource as loading source.
2, in the process of client downloaded resources from CS; Because CS is in virtual platform; The resource transmission of CS and backstage storage system (like the disk array among Fig. 2) and the resource transmission of CS and client; All need pass through virtualization layer, increase burden and system's probability of errors of virtualization layer, increase network delay simultaneously.
3, SS pushes in the process of resource to CS, because CS is in virtual platform, during the resource transmission of CS and SS and CS and backstage storage system (like the disk array among Fig. 2) resource transmission; Also need pass through virtualization layer; Therefore, when CS upgrades the resource of self preserving, also exist the virtualization layer burden big; System's probability of errors is high, the problem that network delay is long.
Therefore; Need badly and introduce a kind of virtual machine fast transferring that can realize the CS place; And in the process of virtual machine (vm) migration, can not cause losing and retransmitting of packet, simultaneously in client from CS downloaded resources and CS more the process of new resources; Can reduce the processing burden of virtualization layer, reduce the data transmission method of network delay.
Summary of the invention
The embodiment of the invention provides a kind of data transmission method, system and equipment; Be used for solving the transmission that prior art CS will bear signaling and data simultaneously; The virtual machine (vm) migration time that causes belonging to is long, be prone to lose a large amount of data download, and will pass through virtualization layer during CS transmission data, causes the virtualization layer burden big; System's probability of errors is high, the problem that network delay is long.
A kind of data transmission method, this method comprises:
The signal server CSS that is deployed in virtual platform receives the download request that client is sent, and carries the sign and the client identification of data to be downloaded in the said download request;
CSS sends to the data server CSD that is not deployed in virtual platform and carries the sign of said data to be downloaded and the instruction of client identification; Indication CSD downloads the corresponding data of sign of said data to be downloaded from memory device, and data downloaded is sent to said client identification clients corresponding.
A kind of data transmission method, this method comprises:
Be deployed in the renewal request of the signal server CSS received content source server SS transmission of virtual platform, carry the sign of data to be updated in the said renewal request;
CSS sends the instruction of the sign carry said data to be updated to the data server CSD that is not deployed in virtual platform, and indication CSD obtains the corresponding data of sign of data to be updated described in the SS, and with the storage of obtaining to memory device.
A kind of data transmission system, this system comprise signal server CSS that is deployed in virtual platform and the data server CSD that is not deployed in virtual platform, wherein:
Said CSS is used to receive the download request that client is sent, and carries the sign and the client identification of data to be downloaded in the said download request, and carries the sign of said data to be downloaded and the instruction of client identification to said CSD transmission;
Said CSD is used for according to the instruction that receives, and from memory device, downloads the corresponding data of sign of said data to be downloaded, and data downloaded is sent to said client identification clients corresponding.
A kind of signal server, said signal server is deployed in virtual platform, and said signal server comprises:
Receiver module is used to receive the download request that client is sent, and carries the sign and the client identification of data to be downloaded in the said download request;
Sending module; Be used for carrying the sign of said data to be downloaded and the instruction of client identification to the data server CSD transmission that is not deployed in virtual platform; Indication CSD downloads the corresponding data of sign of said data to be downloaded from memory device, and data downloaded is sent to said client identification clients corresponding.
A kind of data server, said data server is not deployed in virtual platform, and said data server comprises:
Receiver module is used for the sign that carries said data to be downloaded that signal server CSS that acceptance division is deployed on virtual platform sends and the instruction of client identification;
Download module is used for from the corresponding data of sign of the said data to be downloaded of memory device download;
Sending module is used for data downloaded is sent to said client identification clients corresponding.
A kind of data transmission system, this system comprise signal server CSS that is deployed in virtual platform and the data server CSD that is not deployed in virtual platform, wherein:
Said CSS is used for the renewal request that received content source server SS sends, and carries the sign of data to be updated in the said renewal request, and sends the instruction of the sign that carries said data to be updated to CSD;
Said CSD is used for according to the instruction that receives, from SS, obtains the corresponding data of sign of said data to be updated, and with the storage of obtaining to memory device.
A kind of signal server, said signal server is deployed in virtual platform, and this signal server comprises:
Receiver module is used for the renewal request that received content source server SS sends, and carries the sign of data to be updated in the said renewal request;
Sending module; Be used for sending the instruction of the sign that carries said data to be updated to the data server CSD that is not deployed in virtual platform; Indication CSD obtains the corresponding data of sign of said data to be updated from SS, and with the storage of obtaining to memory device.
A kind of data server, said data server is not deployed in virtual platform, and said data server comprises:
Receiver module is used for the instruction of the sign that carries said data to be updated that signal server CSS that acceptance division is deployed on virtual platform sends;
Data acquisition module is used for obtaining from content source server SS the corresponding data of sign of said data to be updated;
Sending module is used for the storage of obtaining to memory device.
In the scheme provided by the invention; The function of the former content server CS that is deployed in virtual platform is replaced by signal server CSS that is deployed in virtual platform and the data server CSD that is not deployed in virtual platform; With the signaling process of CS and separating of data-transformation facility; Solved because the data-transformation facility among the CS takies a large amount of network bandwidths, when causing the elongation of virtual machine (vm) migration time and a large amount of network datas being arranged through CS, lost the serious problem of data download; Simultaneously; The scheme of the embodiment of the invention is carried out transfer of data by the CSD that is not deployed in virtual platform, makes transfer of data need not to pass through virtual level, and the burden that has overcome virtualization layer heavily reaches the high problem of system's probability of errors.
Description of drawings
Fig. 1 is the structural representation of the stream media system of available technology adopting P2P pattern;
Fig. 2 is the structural representation of DSN stream media system in the prior art;
The schematic flow sheet of a kind of data transmission method that Fig. 3 provides for the embodiment of the invention one;
The schematic flow sheet of a kind of data transmission method that Fig. 4 provides for the embodiment of the invention two;
The schematic flow sheet of a kind of data transmission method that Fig. 5 provides for the embodiment of the invention three;
The schematic flow sheet of a kind of data transmission method that Fig. 6 provides for the embodiment of the invention four;
The schematic flow sheet of a kind of data transmission method that Fig. 7 provides for the embodiment of the invention five;
The schematic flow sheet of a kind of data transmission method that Fig. 8 provides for the embodiment of the invention six;
The structural representation of a kind of data transmission system that Fig. 9 provides for the embodiment of the invention seven;
The structural representation of a kind of signal server that Figure 10 provides for the embodiment of the invention eight;
The structural representation of a kind of data server that Figure 11 provides for the embodiment of the invention nine;
The structural representation of a kind of data transmission system that Figure 12 provides for the embodiment of the invention ten;
The structural representation of a kind of signal server that Figure 13 provides for the embodiment of the invention 11;
The structural representation of a kind of data server that Figure 14 provides for the embodiment of the invention 12.
Embodiment
Through Figure of description and each embodiment technical scheme of the present invention is elaborated below.
In technical scheme of the present invention; Having signaling process and data-transformation facility CS server when being deployed in virtual platform is replaced by signal server with signaling process function (CSS) that is deployed in virtual platform and the data server with data-transformation facility (CSD) that is not deployed in virtual platform; Thereby through the data-transformation facility of CS is separated from virtual platform; Thereby solve the CS that is deployed in virtual platform is that client provides downloaded resources and CS to upgrade in the process of own resource; Transfer of data takies a large amount of network bandwidths; When causing the growth of virtual machine (vm) migration time and network datas are through CS in a large number, because virtual machine is worked as the loss of data that machine causes, the process need that solves CS transmission data simultaneously passes through virtual level; Increase burden and system's probability of errors of virtualization layer, increase the technical problem of network delay.
Embodiment one,
Be illustrated in figure 3 as the schematic flow sheet of a kind of data transmission method that the embodiment of the invention one provides, this method mainly may further comprise the steps:
Step 101, signal server CSS receive the download request that client is sent.
The signal server CSS that is deployed in virtual platform receives the download request that client is sent, and carries the sign and the client identification of data to be downloaded in the said download request.
Step 102, CSS send download instruction to data server CSD.
CSS sends download instruction to the data server CSD that is not deployed in virtual platform, carries the sign and the client identification of said data to be downloaded in the said instruction.
Step 103, CSD data download from memory device.
CSD can be from searching the corresponding data of sign of said data to be downloaded arbitrarily with the memory device that self connects, and from memory device with these data these data of download.
More excellent; In order to practice thrift the time that CSD searches the memory device of the corresponding data of sign with said data to be downloaded; CSS can also carry the sign of self corresponding memory device in the instruction that CSD sends, indication CSD downloads the corresponding data of sign of said data to be downloaded from the corresponding memory device of the sign of said memory device.
Step 104, CSD send to client with data downloaded.
CSD will download the data that obtain and be sent to the client identification clients corresponding of carrying in the instruction in step 103.
More excellent; Separate transparent to client in order to realize the CS function; CSS can also carry the sign of CSS in the instruction that CSD sends; Indication CSD will said data to be downloaded corresponding data of sign when sending to said client identification clients corresponding, the sign of said CSS is sent the source end as data identifies.
Before step 101, said method also comprises step 101 ':
Step 101 ', CSS confirms self to preserve the client-requested data downloaded.
The Resources list that CSS preserves according to self confirms that self corresponding memory device preserves the corresponding data of sign of said data to be downloaded, preserves the information of the data (streaming media resource) of preserving in the corresponding memory device of CSS in said the Resources list.
CS after the function that through two concrete instances the embodiment of the invention one is provided is below separated provides the downloaded resources scheme to be elaborated to client.
Embodiment two,
The embodiment of the invention two provides a kind of data transmission method, and the flow chart of steps of this method is as shown in Figure 4, specifically may further comprise the steps:
Step 201, obtain the sign of data to be downloaded.
The user is at needs download stream media data, and during like film, through client UE1 login Portal server, selection needs the stream medium data of download, and Portal server returns the sign of these data to UE1.
Step 202, UE1 send the data download request to Tracker.
Carry the sign of data to be downloaded in the said download request, Tracker returns the Peer list that includes the corresponding data of this sign to UE1.
It is mutual that CSS1 among step 203, UE1 and the Peer list carries out bitmap.
Tracker possibly include a plurality of CS and a plurality of other clients in the Peer list that UE1 returns (UE2, UE3......), the embodiment of the invention is paid close attention to the method for client data download from CS, therefore, is that example describes with UE1 data download from CS1.
Because CS1 is divided into signal server CSS1 that is deployed in virtual platform and the data server CSD1 that is not deployed in virtual platform, therefore, the bitmap reciprocal process of UE1 and CS1 is actual to be the bitmap reciprocal process of UE1 and CSS1.
Step 204, UE1 send the burst download request to CSS1.
After the mutual completion of the bitmap of UE1 and CSS1; Confirm to preserve in the corresponding memory device of CSS1 the corresponding data of sign of said data to be downloaded; Send the burst download request to CSS1, comprise the sign of burst to be downloaded and IP address and the port numbers of UE1 in this request.
Step 205, CSS1 return response message to UE1, and send download instruction to CSD1.
CSS1 carries IP address and the port numbers of CSS1 in the response message that UE1 returns.
And; CSS1 sends download instruction to CSD1, carries the sign of burst to be downloaded, the IP address of UE1 and IP address and the port numbers of port numbers and CSS1 in this instruction, and indication CSD1 downloads the corresponding burst of sign of burst to be downloaded from memory device; And the burst of downloading is sent to IP address and the port numbers of UE1; When sending burst to UE1, source address adopts IP address and the port numbers of CSS1, thereby realizes that the CS1 function separates transparent to UE1.
More excellent, also carry the sign of memory device in the said instruction, be used for indicating CSD1 to download the corresponding burst of sign of burst to be downloaded from the corresponding memory device of the sign of memory device.
Step 206, CSD1 are to CSS1 return data end-of-transmission message.
CSD1 accomplishes after the transfer of data of UE1, to CSS1 return data end-of-transmission message.
Realize can at any time and keeping keep-alive information between the CSS1 in the process of transfer of data at CSD1 yet, make CSS1 can understand the situation of transfer of data among the CSD at any time, the data of transmitting among the assurance CSD1 are not lost.
Embodiment three,
The embodiment of the invention three provides a kind of data transmission method, and the flow chart of steps of this method is as shown in Figure 5, specifically may further comprise the steps:
Step 301 in the present embodiment～step 304 is identical with step 201～step 204 among the embodiment two, repeats no more at this.
Carry IP address and the port numbers of CSD1 in this response message, notice UE1 provide data by CSD1 for it.
UE1 returns the negotiation success message to CSS1, and affirmation can provide data for it by CSD1.
CSS1 is after receiving the negotiation success message that UE1 returns; Send download instruction to CSD1; Carry the sign of burst to be downloaded and IP address and the port numbers of UE1 in this instruction; Indication CSD1 downloads the corresponding burst of sign of burst to be downloaded from memory device, and the burst of downloading is sent to IP address and the port numbers of UE1.
More excellent, also carry the sign of memory device in the said instruction, be used for indicating CSD1 to download the corresponding burst of sign of burst to be downloaded from the corresponding memory device of the sign of memory device.
CSD1 accomplishes after the transfer of data of UE1, to CSS1 return data end-of-transmission message.
In the process of CSD1 transfer of data, also can at any time and keep keep-alive information between the CSS1, make CSS1 can understand the situation of transfer of data among the CSD1 at any time, the data of transmitting among the assurance CSD1 are not lost.
In the scheme that the embodiment of the invention one to embodiment three provides; In the process of client data download from CS; Through CS being divided into signal server CSS that is deployed in virtual platform and the data server CSD that is not deployed in virtual platform, solved CS and taken a large amount of network bandwidths, when causing the growth of virtual machine (vm) migration time and network datas are through CS in a large number with data-transformation facility with signaling process function; Because the loss of data that virtual machine causes when machine; Also solve CS simultaneously and be client and provide in the process of data download and need pass through virtual level, increase burden and system's probability of errors of virtualization layer, increase the technical problem of network delay.
And, be that client provides in the process of data at CS, CSS can carry the sign of memory device in the download instruction that CSD sends, practiced thrift the time that CSD searches the memory device with the corresponding resource of said resources to be downloaded sign; Can also carry the sign of CSS in the download instruction; When indication CSD sends to said client identification clients corresponding with the corresponding resource of said resources to be downloaded sign; The sign of said CSS is sent source end sign as resource, and the separation of realization CS function is transparent to client.
Embodiment four,
Be illustrated in figure 6 as the schematic flow sheet of a kind of data transmission method that the embodiment of the invention four provides, this method mainly may further comprise the steps:
The renewal request that step 401, signal server CSS received content source server SS send.
Be deployed in the renewal request of the signal server CSS received content source server SS transmission of virtual platform, carry the sign of data to be updated in the said renewal request.
CSS sends data to the data server CSD that is not deployed in virtual platform and obtains instruction, carries the sign of said data to be updated in the said instruction.
CSD can be from searching the corresponding data of sign of said data to be updated arbitrarily with the SS that self connects, and from the SS with these data, obtain this data.
More excellent; In order to practice thrift the time that CSD searches the SS of the corresponding data of sign with said data to be updated; Can also carry the sign of sending the SS of the request of renewal to CSS in the said instruction, indication CSD obtains the corresponding data of sign of said data to be updated from the corresponding SS of the sign of said SS.
Also carry the sign of the corresponding memory device of said CSS in the said instruction, the memory device that indication CSD is corresponding with the sign of the storage of obtaining to said memory device.
The scheme of the CS renewal after the function that through two concrete instances the embodiment of the invention four is provided is below separated self stored resource is elaborated.
Embodiment five,
The embodiment of the invention five provides a kind of data transmission method, and the flow chart of steps of this method is as shown in Figure 7, specifically may further comprise the steps:
When in SS, having new stream medium data to issue, SS sends the request of renewal to CSS, carries the sign of data to be updated in the said renewal request.
CSS returns response message to SS, and notice SS will be by the corresponding CSD of CSS from its data download.
Carry the sign of said data to be updated in the said instruction, can also carry the sign of the corresponding memory device of CSS self.
More excellent, can also carry the sign of SS in the said instruction, be used for indicating CSD to download the corresponding data of sign of data to be updated from the corresponding SS of this sign.
CSD can be from searching the corresponding data of sign of said data to be updated arbitrarily with the SS that self connects, and from SS with these data these data of download.
More excellent, in order to practice thrift the time that CSD searches the SS of the corresponding data of sign with said data to be updated, can from the corresponding SS of the sign of said SS, download the corresponding data of sign of said data to be updated according to the sign of the SS that carries in the instruction.
CSD will download the corresponding memory device of sign that the data that obtain are sent to memory device in step 504.
After CSD is saved to the corresponding memory device of CSS in the download of accomplishing data to be updated and with these data, notice CSS DTD.
In the process of CSD transfer of data, also can at any time and keep keep-alive information between the CSS, make CSS can understand the situation of transfer of data among the CSD at any time, the data of transmitting among the assurance CSD are not lost.
CSS upgrades self stored resource tabulation after the DTD message that receives the CSD transmission, and reports renewal back self data information stored to Tracter, with the information of the storage data among the CSS that preservation is correct among the assurance Tracter.
Embodiment six,
The embodiment of the invention six provides a kind of data transmission method, and the flow chart of steps of this method is as shown in Figure 8, specifically may further comprise the steps:
When in SS, having new stream medium data to issue, SS sends the request of renewal to CSS, carries the sign of data to be updated in the said renewal request.
Carry the sign of said data to be updated in the said instruction, can also carry the sign of the corresponding memory device of CSS self.
More excellent, can also carry the sign of SS in the said instruction, be used for indicating CSD to receive the data of the sign correspondence of the data to be updated that push from the corresponding SS of this sign.
CSS returns response message to SS, and notice SS will be received the data of its propelling movement by the corresponding CSD of CSS.
CSD can receive arbitrarily the corresponding data of sign of the said data to be updated that push with the SS that self connects.
More excellent, CSD can be according to the sign of the SS that carries in the instruction, receives the corresponding data of sign of the said data to be updated that the corresponding SS of sign of said SS pushes.
The data that CSD will receive in step 604 are sent to the corresponding memory device of sign of memory device.
Step 606～step 607 is identical with step 506～step 507 among the embodiment five, repeats no more at this.
The scheme that provides through the embodiment of the invention four to embodiment six; At CS more in the process of new resources; In the technical problem that solves the present invention's proposition, not only can utilize CSD initiatively from SS, to download data to be updated, the data that can also utilize the passive reception of CSD SS to push; Improved the flexibility of CS resource updates; CSS can carry the sign of SS in the instruction that CSD sends, indication CSD downloaded resources or receive the resource of specifying SS to push from the SS of appointment has been practiced thrift CSD and searched the time with the corresponding SS of said resource identification to be updated.
Embodiment seven,
The embodiment of the invention seven provides a kind of data transmission system, and the structural representation of this system is as shown in Figure 9, and this system comprises signal server (CSS) 11 that is deployed in virtual platform and the data server (CSD) 12 that is not deployed in virtual platform, wherein:
Said CSS is used to receive the download request that client is sent, and carries the sign and the client identification of data to be downloaded in the said download request, and carries the sign of said data to be downloaded and the instruction of client identification to said CSD transmission; Said CSD is used for according to the instruction that receives, and from memory device, downloads the corresponding data of sign of said data to be downloaded, and data downloaded is sent to said client identification clients corresponding.
Said CSS also is used for the Resources list of preserving according to self, confirms that self corresponding memory device preserves the corresponding data of sign of said data to be downloaded.
Said CSS also is used for carrying in the instruction of sending to CSD the sign of self corresponding memory device; Said CSD, data download the corresponding memory device of the sign of the memory device that specifically is used for carrying from said instruction.
Said CSS also is used for the sign of carrying CSS in the instruction of sending to CSD; Said CSD when being used for that specifically data downloaded sent to said client identification clients corresponding, sends source end sign with the sign of the CSS that carries in the said instruction as data.
Embodiment eight,
The embodiment of the invention eight provides a kind of signal server, and this signal server is deployed in virtual platform, and the structural representation of this signal server is shown in figure 10, and this signal server comprises receiver module 21 and sending module 22, wherein:
Said signal server also comprises resource determination module 23:
Said sending module 22 also is used for carrying in the instruction of sending to CSD the sign of the corresponding memory device of CSS, data download in the memory device of the sign correspondence of the memory device that indication CSD carries from said instruction.
Said sending module 22 also is used for the sign of carrying CSS in the instruction of sending to CSD, when indication CSD sends to said client identification clients corresponding with data downloaded, the sign of the CSS that carries in the said instruction is sent source end sign as data.
Also comprise state-maintenance module 24 in the said signal server:
Said state-maintenance module 24 is used for preserving the information of said signal server in the data (streaming media resource) of the preservation of the memory device of correspondence; And carry out Signalling exchange with data server, guarantee to preserve all the time in the signal server up-to-date information of data server.
Embodiment nine,
The embodiment of the invention nine provides a kind of data server, and this data server is not deployed in virtual platform, and the structural representation of this data server is shown in figure 11, and this data server comprises receiver module 31, download module 32 and sending module 33, wherein:
Said download module 32 specifically is used for the sign according to the memory device that carries of instruction, data download from the corresponding memory device of the sign of said memory device.
Said download module 32 specifically is used for the sign according to the CSS that carries of instruction, when data downloaded is sent to said client identification clients corresponding, the sign of said CSS is sent source end sign as data.
Said data server also comprises state-maintenance module 34:
Said state-maintenance module 34 is used for sending to client the process of data downloaded; Carry out Signalling exchange with signal server; Guarantee that signal server can understand the situation of transfer of data in the data server at any time, guarantee to preserve all the time in the signal server up-to-date information of data server.
Embodiment ten,
The embodiment of the invention ten provides a kind of data transmission system, and the structural representation of this system is shown in figure 12, and this system comprises signal server (CSS) 41 that is deployed in virtual platform and the data server (CSD) 42 that is not deployed in virtual platform, wherein:
Said CSS is used for the renewal request that received content source server SS sends, and carries the sign of data to be updated in the said renewal request, and sends the instruction of the sign that carries said data to be updated to CSD; Said CSD is used for according to the instruction that receives, from SS, obtains the corresponding data of sign of said data to be updated, and with the storage of obtaining to memory device.
Said CSS also is used for the sign of carrying the corresponding memory device of CSS to the instruction of CSD transmission; Said CSD, the corresponding memory device of sign of the memory device that specifically is used for the storage of obtaining is carried to said instruction.
Said CSS also is used for the sign of carrying SS in the instruction of sending to CSD; Said CSD obtains data the corresponding SS of the sign of the SS that specifically is used for carrying from said instruction.
The embodiment of the invention 11 provides a kind of signal server, and this signal server is deployed in virtual platform, and the structural representation of this signal server is shown in figure 13, and this signal server comprises receiver module 51 and sending module 52, wherein:
Receiver module 51 is used for the renewal request that received content source server SS sends, and carries the sign of data to be updated in the said renewal request; Sending module 52 is used for sending to the data server CSD that is not deployed in virtual platform the instruction of the sign that carries said data to be updated; Indication CSD obtains the corresponding data of sign of said data to be updated from SS, and with the storage of obtaining to memory device.
Said sending module 52 also is used for carrying in the instruction of sending to CSD the sign of the corresponding memory device of CSS, the memory device that indication CSD is corresponding with the sign of the memory device that carries in the storage of obtaining to the said instruction.
Said sending module 52 also is used for the sign of carrying SS in the instruction of sending to CSD, obtains data among the corresponding SS of the sign of the SS that indication CSD carries from said instruction.
Also comprise state-maintenance module 53 in the said signal server:
Said state-maintenance module 53 is used for the DTD message that reports according to data server; Upgrade the information of the data (streaming media resource) of the preservation of said signal server in the memory device of correspondence; And carry out Signalling exchange with data server, guarantee to preserve all the time in the signal server up-to-date information of data server.
The embodiment of the invention 12 provides a kind of data server; This data server is not deployed in virtual platform; The structural representation of this data server is shown in figure 14, and this data server comprises receiver module 61, data acquisition module 62 and sending module 63, wherein:
Receiver module 61 is used for the instruction of the sign that carries said data to be updated that signal server CSS that acceptance division is deployed on virtual platform sends; Data acquisition module 62 is used for obtaining from content source server SS the corresponding data of sign of said data to be updated; Sending module 63 is used for the storage of obtaining to memory device.
Said data acquisition module 62 specifically is used for the sign according to the memory device that carries of instruction, the memory device that the sign of the storage of obtaining to said memory device is corresponding.
Said data acquisition module 62 specifically is used for the sign according to the SS that carries of instruction, from the corresponding SS of the sign of said SS, obtains data.
Said data server also comprises state-maintenance module 64:
Said state-maintenance module 64 is used for sending to client the process of data downloaded; Carry out Signalling exchange with signal server; Guarantee that signal server can understand the situation of transfer of data in the data server at any time, guarantee to preserve all the time in the signal server up-to-date information of data server.
Signal server among the embodiment of the invention eight and the embodiment 11 can be two separate equipment; Also can the function of the signal server among embodiment eight and the embodiment 11 be integrated in the equipment; Equally; Data server among the embodiment of the invention nine and the embodiment 12 can be two separate equipment, also can the function of the data server among embodiment nine and the embodiment 12 be integrated in the equipment.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (16)
1. a data transmission method is characterized in that, this method comprises:
The signal server CSS that is deployed in virtual platform receives the download request that client is sent, and carries the sign and the client identification of data to be downloaded in the said download request;
CSS sends to the data server CSD that is not deployed in virtual platform and carries the sign of said data to be downloaded and the instruction of client identification; Indication CSD downloads the corresponding data of sign of said data to be downloaded from memory device, and data downloaded is sent to said client identification clients corresponding.
2. the method for claim 1 is characterized in that, CSS receives before the download request, and said method also comprises:
The Resources list that CSS preserves according to self confirms that self corresponding memory device preserves the corresponding data of sign of said data to be downloaded.
3. method as claimed in claim 2 is characterized in that, indication CSD downloads the corresponding data of sign of said data to be downloaded from memory device, comprising:
Also carry the sign of the corresponding memory device of CSS in the said instruction, data download in the memory device of the sign correspondence of the memory device that indication CSD carries from said instruction.
4. the method for claim 1 is characterized in that, indication CSD sends to said client identification clients corresponding with data downloaded, comprising:
Also carry the sign of CSS in the said instruction, indication CSD sends source end sign with the sign of the CSS that carries in the said instruction as data when data downloaded being sent to said client identification clients corresponding.
5. a data transmission method is characterized in that, this method comprises:
Be deployed in the renewal request of the signal server CSS received content source server SS transmission of virtual platform, carry the sign of data to be updated in the said renewal request;
CSS sends the instruction of the sign carry said data to be updated to the data server CSD that is not deployed in virtual platform, and indication CSD obtains the corresponding data of sign of data to be updated described in the SS, and with the storage of obtaining to memory device.
6. method as claimed in claim 5 is characterized in that, indication CSD to memory device, specifically comprises the storage of obtaining:
Also carry the sign of the corresponding memory device of said CSS in the said instruction, the memory device that indication CSD is corresponding with the sign of the memory device that carries in the storage of obtaining to the said instruction.
7. method as claimed in claim 5 is characterized in that, indication CSD obtains the corresponding data of sign of data to be updated described in the SS, comprising:
Also carry the sign of sending the SS of the request of renewal to CSS in the said instruction, obtain data among the SS of the sign correspondence of the SS that indication CSD carries from said instruction.
8. a data transmission system is characterized in that, this system comprises signal server CSS that is deployed in virtual platform and the data server CSD that is not deployed in virtual platform, wherein:
Said CSS is used to receive the download request that client is sent, and carries the sign and the client identification of data to be downloaded in the said download request, and carries the sign of said data to be downloaded and the instruction of client identification to said CSD transmission;
Said CSD is used for according to the instruction that receives, and from memory device, downloads the corresponding data of sign of said data to be downloaded, and data downloaded is sent to said client identification clients corresponding.
9. system as claimed in claim 8 is characterized in that,
Said CSS also is used for the sign of carrying CSS in the instruction of sending to CSD;
Said CSD when being used for that specifically data downloaded sent to said client identification clients corresponding, sends source end sign with the sign of the CSS that carries in the said instruction as data.
10. signal server, this signal server is deployed in virtual platform, it is characterized in that, and said signal server comprises:
Receiver module is used to receive the download request that client is sent, and carries the sign and the client identification of data to be downloaded in the said download request;
Sending module; Be used for carrying the sign of said data to be downloaded and the instruction of client identification to the data server CSD transmission that is not deployed in virtual platform; Indication CSD downloads the corresponding data of sign of said data to be downloaded from memory device, and data downloaded is sent to said client identification clients corresponding.
11. signal server as claimed in claim 10 is characterized in that,
Said sending module also is used for the sign of carrying CSS in the instruction of sending to CSD, when indication CSD sends to said client identification clients corresponding with data downloaded, the sign of the CSS that carries in the said instruction is sent source end sign as data.
12. a data server, data server is not deployed in virtual platform, it is characterized in that, said data server comprises:
Receiver module is used for the sign that carries said data to be downloaded that signal server CSS that acceptance division is deployed on virtual platform sends and the instruction of client identification;
Download module is used for from the corresponding data of sign of the said data to be downloaded of memory device download;
Sending module is used for data downloaded is sent to said client identification clients corresponding.
13. data server as claimed in claim 12 is characterized in that,
Said download module specifically is used for the sign according to the CSS that carries of instruction, when data downloaded is sent to said client identification clients corresponding, the sign of said CSS is sent source end sign as data.
14. a data transmission system is characterized in that, this system comprises signal server CSS that is deployed in virtual platform and the data server CSD that is not deployed in virtual platform, wherein:
Said CSS is used for the renewal request that received content source server SS sends, and carries the sign of data to be updated in the said renewal request, and sends the instruction of the sign that carries said data to be updated to CSD;
Said CSD is used for according to the instruction that receives, from SS, obtains the corresponding data of sign of said data to be updated, and with the storage of obtaining to memory device.
15. a signal server, this signal server is deployed in virtual platform, it is characterized in that, this signal server comprises:
Receiver module is used for the renewal request that received content source server SS sends, and carries the sign of data to be updated in the said renewal request;
Sending module; Be used for sending the instruction of the sign that carries said data to be updated to the data server CSD that is not deployed in virtual platform; Indication CSD obtains the corresponding data of sign of said data to be updated from SS, and with the storage of obtaining to memory device.
16. a data server, data server is not deployed in virtual platform, it is characterized in that, said data server comprises:
Receiver module is used for the instruction of the sign that carries said data to be updated that signal server CSS that acceptance division is deployed on virtual platform sends;
Data acquisition module is used for obtaining from content source server SS the corresponding data of sign of said data to be updated;
Sending module is used for the storage of obtaining to memory device.
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