CN1494790A - Cooperation method of transferring divided file under network environment - Google Patents
Cooperation method of transferring divided file under network environment Download PDFInfo
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- CN1494790A CN1494790A CNA018231020A CN01823102A CN1494790A CN 1494790 A CN1494790 A CN 1494790A CN A018231020 A CNA018231020 A CN A018231020A CN 01823102 A CN01823102 A CN 01823102A CN 1494790 A CN1494790 A CN 1494790A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/62—Establishing a time schedule for servicing the requests
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Information Transfer Between Computers (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Computer And Data Communications (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Disclosed is a method for receiving files divided from a single file by a plurality of servers under a network environment. The method according to the invention includes the steps of selecting a desired file to be received by a user's device, receiving information on the devices storing the file from a file management system that manages transmission of files, determining one or more servers, through which the file is to be transmitted, among the devices storing the file, requesting one or more servers to transmit a part of the file, respectively, receiving the requested parts of the file from one or more servers, respectively, and integrating the parts of the transmitted file into a single file. The file management system is a system managing transmission of files, and may exist as a separate file management server or split into a plurality of devices. According to the invention, a transmitting velocity is enhanced by receiving a plurality of files divided into a number of servers. When any problem occurs in one of the servers during transmission of a file, another server is substituted for submission of the file with fault tolerance of a server.
Description
Technical field
The present invention relates to a kind of in the environment of networking the collaboration method of a file of transmission, relate in particular to a kind of method of cutting apart a plurality of files that single file obtains by a plurality of servers that in network environment, receives.
Background technology
In the Client of the prior art under network environment, use man-to-man transmission method, one of them client computer is connected to a server, and receives a file.In this method, if the transmission rate of server is very low, then client computer also receives file with a very low speed, so it can not use its bandwidth best.If number of the Internet users increases in transmission course, even client computer is connected to only server, transmission rate also will reduce significantly.In addition, mistake occurs if transmit the server of a file, then file transfer finishes in fault.Therefore, client computer must receive a file once more from another server problem appears.
The U.S. the 6th, 085, No. 251 patent disclosures a plurality of files of a kind of parallel transmission to improve the methods of file transfer speed.In this method, a server becomes a plurality of packets with single file division, concurrently these packets is sent to a client computer simultaneously, and receives a confirmation signal from this client computer.Server merges these divided packets then with the fact notice client computer of file division on client computer.With transmits data packets one by one and verify that the correct transmission of each packet compares, this method provides very high file transfer speed.Yet, if a mistake on server, occurs, can not carry out file transfer, therefore can not guarantee a stable file transfer.
Because man-to-man transmission method has such shortcoming, and personal computer can be used as an improved server on the performance of personal computer, so there is no need to keep this man-to-man transmission method.
Summary of the invention
Therefore, an object of the present invention is by allowing the user to receive to cut apart a plurality of files that single file obtains to use its bandwidth best to improve transmission rate by a plurality of servers.
Another object of the present invention is by occurring anyly providing a kind of tolerant system with alternative this failed server of another server immediately when unusual in the server in a plurality of servers in document transmission process.
Another object of the present invention provides a kind ofly to be guaranteed from a plurality of fragments of a plurality of Server Transport same files as receiving the method for precondition that is divided into the single file of a plurality of fragments by a plurality of servers.
If another object of the present invention provides an a kind of file and can not be stored in fully in the individual equipment then cut apart this document and it is stored in a plurality of equipment, browse the method for whole file content then by document transmission method according to the present invention.
To achieve these goals, according to a first aspect of the invention, provide a kind of method of between a plurality of equipment that connect by network, transmitting a file, comprise step: select the file that subscriber equipment wishes to receive; Receive the information of the equipment of relevant storage this document from the file management system of a management document transmission; Among the equipment of storage this document, determine one or more servers that will be used for transfer files; Ask one or more servers to transmit a fragment of this document respectively; Receive the file fragment of being asked respectively from described one or more servers; Then, the file fragment that is transmitted is merged into single file.
Here, server is meant the equipment as server, promptly is used to transmit an equipment of a file, and described transmission comprises data flow and download.
In order to receive a file from a plurality of servers, management document system for transmitting of essential existence.This file management system can be used as single document management server and exists, and perhaps is divided into a plurality of equipment.
When subscriber equipment is determined one or more server of a file of transmission, preferably be that order is determined these servers with the transmission rate.In addition, when when a plurality of servers receive each file fragment, preferably receive mass data, and receive low volume data from a low server of transmission rate from a high server of transmission rate.
When a plurality of servers receive each file fragment, it writes down this information in a journal file at subscriber equipment.This journal file is used for these file fragments are merged into original document subsequently.
Each subscriber equipment is when each server receives a certain size a plurality of packet, and it estimates the transmission rate of this server.If transmission rate sharply reduces, perhaps there is a unsettled server, then substitute this server with the another one server.
According to the list of devices of storage this document that receives from file management system, perhaps determine described alternative server according to the tabulation of upgrading by file management system according to request.
Simultaneously, cut apart a plurality of files that single file obtains, the essential fragment that guarantees all Server Transport identical file in order to receive by a plurality of servers.In the present invention, when file transfer, the information of original document is recorded in the meta file, in case give another user with the fragments for transport of this document, then the file that will transmit with compare in the information of this meta file stored.
According to a first aspect of the invention, the user can be cut apart a plurality of files that single file obtains by a plurality of servers and uses its bandwidth best by receiving, thereby improves transmission rate.Any when unusual when in the transmission course of a file, in a server, occurring, can be immediately by substitute fault-tolerant this document that transmits of this failed server use server with another server.
Under a file being cut apart fully and be stored in situation in a plurality of servers, and under merging and receiving situation, also can use the present invention from a plurality of files of a plurality of servers.
That is to say, according to a second aspect of the invention, with a file division and be stored under the situation of a plurality of equipment that connect by network, a kind of method of calling this document is provided, comprises step: the information that receives a plurality of equipment of relevant each fragment of storage this document from the file management system of a management document transmission; From a plurality of equipment of each fragment of storage this document, determine one or more servers of each fragment of transmission this document; Receive each fragment of this document from determined one or more servers; And each fragment of this document is merged into single file.
In addition, according to a third aspect of the invention we, provide a kind of with a file from the method for a device transmission to a plurality of equipment the many equipment that connect by network, comprise step: a described equipment is transferred to the fastest equipment in described a plurality of equipment with this document; By this way this document is transferred to the slowest equipment downwards, the fastest equipment that has promptly received this document is transferred in described a plurality of equipment the second fast equipment with this document, the second fast equipment that has received this document is transferred to the 3rd fast equipment with this document, and in the method, if a described equipment has been finished the file transfer of an equipment in described a plurality of equipment, then this document is transferred to another equipment in described a plurality of equipment.
In addition, according to a forth aspect of the invention, provide a kind of with a file from the method for a device transmission to a plurality of equipment the many equipment that connect by network, comprise step: a described equipment is transferred to described a plurality of equipment with this document; And if transmission quantity surpasses a pre-determined amount, a then described equipment only is transferred to this document the fastest equipment in described a plurality of equipment, this the fastest equipment receives this document from a described equipment, simultaneously this document is transferred to the miscellaneous equipment in described a plurality of equipment.
According to third and fourth aspect of the present invention, can give a plurality of equipment with a file from a device transmission in two-forty ground.
Description of drawings
When in conjunction with the accompanying drawings, above-mentioned purpose of the present invention, feature and advantage will become more obvious according to following detailed, in the accompanying drawings:
Fig. 1 is the overall construction drawing according to a document transmission system of the present invention;
Fig. 2 to Fig. 4 is the overall construction drawing according to a file management system of the present invention;
Fig. 5 is the flow chart that schematically illustrates according to a document transmission processing of the present invention;
Fig. 6 is the data structure diagram of a candidate server tabulation, and storage can be transmitted the information of the server of a file in this tabulation;
Fig. 7 is the schematic diagram of the journal file of a log file transmission information;
Fig. 8 diagram is transmitted the state of a file according to the present invention;
Fig. 9 diagram is given a file state of a plurality of equipment from a device transmission according to the present invention.
Embodiment
Referring now to accompanying drawing a preferred embodiment of the present invention is described.
Fig. 1 is the overall construction drawing according to a file management system of the present invention.
As shown in Figure 1, document transmission system of the present invention comprises a plurality of equipment 20 that connect by a network 10
1, 20
2, 20
3... 20
n
Network 10 comprises all environment that can intercommunication, for example uses the wired Internet of modulator-demodulator, PSTN, industrial siding and ISDN etc., the wireless Internet that uses PCS, microwave and satellite communication network etc., in-house network, extranets or the like.Equipment 20
1, 20
2, 20
3... 20
nCan be all equipment that can be used for data communication, for example personal computer, work station, minicom, mainframe computer, notebook, conventional portable communication terminal, PDA (personal digital assistant), set-top box, digital television, networking telephone or the like.
File management system is carried out following function: a private file identifier is provided for the file of sharing at a plurality of equipment rooms, manage one can be in the tabulation of the file of these equipment rooms transmission, and therefore an equipment can be from a plurality of equipment reception segmental files.This document management system can be an equipment in a plurality of equipment shown in Figure 1, and it also can comprise a plurality of equipment of collaborative work.
In Fig. 2 to Fig. 4, illustrate polytype file management system.Fig. 2 illustrates a central control documents management system 30, can realize this document management system in such as the main equipment of server at one.In this case, this document management server management document transmits needed all information, and totally controls the file transfer between these equipment.
Fig. 3 illustrates a distributed file management system 30, wherein this document management system is divided into a plurality of equipment.In this case, will in file of transmission, the needed information of cooperation cut apart and be stored in a plurality of equipment, and the control of cooperation execute file transmission between a plurality of equipment.
Fig. 4 illustrates a mixed file management system 30, the i.e. combination of Fig. 2 and system shown in Figure 3.In this case, although mainly by the management of file management system 30 execute files transmission information needed and the control of file transfer, by remaining equipment cooperation operating part work.
Fig. 2 to Fig. 4 only is the example of a file management system, also can realize this document management system by various topological structures.
Fig. 5 is the flow chart of explaining according to the processing of a file of transmission of the present invention.
At first,, wish that the subscriber equipment 20 that receives a file receives the tabulation that can receive file from file management system, specify a file of wishing to receive, and this is notified to file management system at S502 at S501.
A plurality of equipment of the file that file management system detection of stored subscriber equipment 20 is specified calculate the position and the transmission rate of each equipment, then at S503 by being that these equipment of sequence arrangement are transferred to subscriber equipment 20 with this with the transmission rate.In Fig. 6, illustrate the example (hereinafter, be called " a candidate server tabulation ", described " server " is meant the equipment as server) of such list of devices.As shown in Figure 6, the tabulation of this candidate server comprises identifier server 601, server location 602, the Server Transport speed 603 of each server, and is sequence arrangement with Server Transport speed.Come calculation server transmission rate 603 according to the working quantity of bandwidth and current execution.
BW
v
1+v
2+Λ+v
n(v
i≥v
i+1)
BW: user bandwidth
V
i: the speed of i equipment
Shown in top expression formula, so subscriber equipment 20 can use its bandwidth best, and the transmission rate sum of server 40 must be a value near bandwidth.For complete utilized bandwidth, the transmission rate sum of server 40 must be a value that is greater than or less than bandwidth.For example, under the environment of a low transmission rate, a modem user's environment for example, it is suitable specifying the server that transmission rate is the highest 40.
After subscriber equipment 20 had determined to have n server 40 of high transfer rate, it determined to receive from determined server 40 which part and the size of file at S504.In this case, preferably receive the major part of this document, and from having a fraction than server 40 reception this document of low transmission rate, this will represent with following expression from server 40 with a high transfer rate.
Fi: the file fragment size of distributing to i equipment
F: the file size that will receive
In a journal file, be recorded among the S504 transmission server of determining 40 tabulation and will be by the relevant information of a file fragment of each server 40 transmission.When being merged into file from a plurality of fragments of a file of a plurality of servers 40 receptions with them, subscriber equipment 20 needs this journal file.
Then, subscriber equipment 20 is notified to a transmission server 40 to the relevant information of a plurality of fragments of a file that will transmit, and in file transfer of S505 request.
When the transmission of the file fragment of a plurality of servers 40 has been finished, subscriber equipment 20 is merged into single file according to journal file with these file fragments at S507, and finishes in S508 circular document management system 30 file transfer.
Fig. 7 illustrates the example of a journal file.The journal file of Fig. 7 has planned to receive from the 3rd server 40 a plurality of fragments from 1000001 byte to 50000000 bytes of 10000000 byte file.Yet it breaks down when transfer files, causes file only to be transferred to 2000578 bytes.Receive the file of all the other bytes as " fragment 6 " from another server 40.Subscriber equipment 20 is merged into original document according to the transmission information of this journal file with these file fragments.
After finishing file transfer, when the file that is transmitted is stored in the subscriber equipment 20 as its private file identifier, file management system 30 these subscriber equipmenies 20 of record have been stored the file with this document identifier.Because revise, move the position with the user can not guarantee the homogeneity of institute's transfer files to the destruction of file the time, this document can be deleted from a file-sharing environment or is got rid of.
To describe step S506 now in detail according to Fig. 5 of a plurality of fragments of file of transmission of the present invention.
In order to substitute this transmission server, use candidate server tabulation as shown in Figure 6.Determine that according to this candidate server tabulation another has the server of higher transmission rates, transmits the remainder that this server that goes wrong does not transmit as yet then.The quantity that substitutes failed server also can be a plurality of.
If do not have alternative server in the candidate server tabulation, then subscriber equipment 20 passes through the renewal tabulation of request from file management system acquisition candidate server, and searches for an alternative server in this tabulation.
Below, will describe a kind ofly guaranteeing that a plurality of fragments by a file of a Server Transport are methods of a plurality of fragments of identical file now.
As mentioned above, for a plurality of files that come by single file division by a plurality of device transmission, must guarantee a plurality of fragments of all devices transmission identical file.If a plurality of fragments of the different files of a plurality of device transmission, and subscriber equipment is merged into a file with these fragments, and then this file is not the file that the user wants, but an impaired file.
In order to guarantee the homogeneity of file, in the present invention, in case transmit the just information of record original document on a meta file of a file, and in case give relevant information that another user just relatively will transfer files and canned data in this meta file with the fragments for transport of this document.Result as a comparison, if this document is identical with original document, then transmission, if different, would be a new file with its management then by receiving a new identifier from file management system.Can judge whether this document is identical with original document by following method.
At first, if the size of this document is identical with original document, judge that then they are identical.
Secondly, this document is divided into m fragment, then that each fragment is a part of relevant information records is in meta file.When with file transfer during to another equipment, relatively a part of relevant information and the information that writes down on meta file of this fragment that will transmit judges whether they are identical.At this moment, can adjust described certain a part of position and size according to the needs of file management system.
The 3rd, this document is divided into m fragment, the content of coding (eap-message digest) each fragment is to be recorded on the meta file then.When subsequently this document being transferred to another equipment, the fragment that coding will transmit, then with the encoding ratio that on meta file, writes down.If coding is different, it is different with original document then to judge this document.Therefore, do not transmit this fragment, and in whole system, be a new file its management.
If carry out relatively after on meta file, writing down all segment contents, then can absolutely guarantee the homogeneity of file.But in this case, the size of meta file is identical with original document, thereby causes the waste of resource.Therefore, convert the content of transmission fragment to a suitably coding of size, be recorded on the meta file then.
Will be with following expression represent to be used to the to encode method of a plurality of fragments of a file.
code
i＝f(x
i)
F: coding function
x
i: the content of i fragment
Suitably select the size of coding function and coding according to its purpose by file management system.As the simplest coding function, a function that obtains the content summation will be a good example.Guarantee at Special attention will be given under the situation of homogeneity, can be with the complete break-even compression method of a kind of content as a coding function.
Fig. 8 diagram receives a plurality of fragments of a file and they is merged into the state of single file from a plurality of servers by subscriber equipment of processing method shown in Figure 5.
In Fig. 8, five server 81-85 give subscriber equipment 20 with a plurality of fragments for transport of a file respectively.A major part of Server Transport this document that in this case, transmission rate is high.In Fig. 8, the server 83 of transmission largest portion has flank speed, and the server 81 of transmission least part has minimum speed limit.
By this way, by the file of five servers, 81 to 85 transmission that utilizes collaborative work, subscriber equipment 20 can use its bandwidth best, thereby improves file transfer speed significantly.
Though cut apart the method diagram of a plurality of files that single complete file obtains and described the present invention at receiving by a plurality of servers, it also will be suitable for a file division and be stored in situation in a plurality of equipment.Therefore, be used for according to the present invention transmission during a file method and system of collaborative work can be used as a kind of method of cutting apart and storing a big capacity documents.Hereinafter, its description will be explained.
Along with the increase of a file size, an equipment may occur and can not store whole file.In this case, the equipment (being called device A) that can not store whole file is stored a fragment of this big capacity documents, remaining part of other device storage.And, if device A wishes to check the content of this big capacity documents, receiving other fragment of this document by using a file management system according to the present invention, it can check this document, has stored whole file as device A itself.At this moment, a plurality of fragments that will cut apart and be stored in this document in a plurality of equipment are considered as an ordinary file.The processing procedure of a file of transmission is also with identical with reference to figure 5 described transmission and processing process.
For example, if device A can not be stored certain jumbo file fully, therefore this document is divided into a certain size ten fragments, described size is easy to handle so that be stored in a plurality of equipment that comprise device A itself, and device A is checked whole file by the remainder of this document of himself storing by using file management system reception according to the present invention.This document management system is considered as ten ordinary files with these ten fragments, and as shown in Figure 5 they is transferred to device A.
At this moment, shared file system can be the continuous fragment of a file with these ten unique file management.In addition, use a fragment of device A storage this document of whole file, especially, it stores these fragments effectively makes miscellaneous equipment have the smaller portions of this document.For this purpose, device A find to have the number of servers of each file fragment, and storage is by the file fragment that server had of minimum number to the relevant candidate server tabulation as shown in Figure 6 of ten files of file management system request and this.
So far, under identical file being cut apart and be stored in hypothesis in a plurality of servers, described from a plurality of servers receiving a plurality of fragments of a file and they are merged into the method for single file (many-one transmission).
Yet when generating a file for the first time, this file only exists a Device memory.Therefore, will be described in two kinds of methods of a file transfer being given raising transmission rate under the situation of a plurality of equipment (one-to-many transmission) hereinafter.
At first, preceding a kind of method relates to the speed that central control documents management system is managed a plurality of equipment as shown in Figure 2, and making these equipment serves as the situation that order receives a file with their transmission rate.
In other words, this document management system is obtained the transmission rate of a file of these device transmission, with the transmission rate be sequence arrangement they, and the tabulation of these equipment sent to the equipment (server) of storage this document and a plurality of equipment of reception this document.With reference to this tabulation, this server is transferred to the fastest equipment with this document, and the fastest equipment is transferred to the second fast equipment with this document, and the second fast equipment is transferred to the 3rd fast equipment with this document.In transmission course, when the fastest equipment was finished transmission of this document, it was to end-of-transmission message of server notification.Then, allow this fastest equipment, and allow this document to be transferred to the second fast equipment as the equipment of original server as another server.
By an example said method is described referring now to Fig. 9.Supposing that current only equipment No.0 has a specific file, is that tactic equipment No.1 to No.100 slave unit No.0 receives this file with transmission rate.Actuating equipment No.0 is up to the forwarding of equipment No.100, so that equipment No.0 is transferred to equipment No.1 with this document, equipment No.1 is transferred to equipment No.2 with this document, and the rest may be inferred.When in transmission course, finishing a file transfer to equipment No.1, allow equipment No.1 as a server, and the equipment of permission No.0 is that original server is transferred to equipment No.2 with this document.By this way, along with number of servers continues to increase, this transmission becomes many-to-one transmission gradually, thereby improves the transmission rate of this document.
Secondly, a kind of method in back relates to the not method of necessary management equipment speed of a kind of file management system.If request surpasses a predetermined volumes as the number of devices of equipment (equipment No.0) the execute file transmission of server, then equipment No.0 concentrates on the highest equipment of speed (equipment No.1) with its file transfer, basically to file of miscellaneous equipment transmission, cause that therefore miscellaneous equipment searches for another server.Simultaneously, equipment 0 notifies the equipment No.1 of a transmission of current execution will become the equipment that is used as a new server to file management system.
When the miscellaneous equipment request was used as the list of devices of server, file management system sent a tabulation that comprises equipment No.1.In case see this tabulation, miscellaneous equipment is just attempted slave unit No.1 and is received a file.
Therefore, when slave unit No.0 received a file, equipment No.1 gave miscellaneous equipment with a file transfer in the current data area that has received.If there is the equipment of too much requesting service No.1 execute file transmission, then file management system is apprised of: by equipment No.1 is being the equipment as new server to the equipment (equipment No.2) of its transfer files.By this way, the transmission of this one-to-many little by little is varied to a many-to-one transmission, thereby improves transmission rate.
Though so far with reference to the formal description of downloading a file the present invention, it also goes for a flow transmission.Thereby flow transmission be do not need to download receiving data under the situation of a big capacity documents in regeneration video or audio content appreciate the technology of video and audio content.Equally, in this case, when downloading a file, can directly use the present invention.
Though illustrate and described the present invention at some preferred embodiment of the present invention, those of ordinary skill in the art will understand under the situation that does not break away from the defined the spirit and scope of the present invention of claims, can carry out various changes therein in form and details.
And not only give a plurality of users with whole file transfer by individual server, but cut apart a plurality of files that single file obtains by a plurality of servers by receiving, improved file transfer speed significantly according to document transmission system of the present invention and method.
In addition, when in the process of a file of transmission, in one of server, any problem occurring, use the server fault-toleranr technique to substitute the transmission of this document by another server.
In addition, even a file is present in the individual equipment, and it must be transferred to a plurality of equipment from this individual equipment, and the transmission rate of file also can improve.
Can be used for using a unworkable in the prior art big capacity documents according to document transmission system of the present invention and method, and can be used for data streaming service.
Claims (25)
1. the method for a file of transmission between a plurality of equipment that connect by network comprises step:
The file of selecting a hope to receive by a subscriber equipment;
Receive the information of a plurality of equipment of relevant storage this document from the file management system of a management document transmission;
Among the equipment of storage this document, determine one or more servers that will be used for transfer files;
Ask one or more servers to transmit a fragment of this document respectively;
Receive the file fragment of being asked respectively from described one or more servers; With
The file fragment that is transmitted is merged into single file.
2. the method for claim 1, wherein the transmission rate with equipment serves as that order is selected one or more servers from a plurality of equipment of storage this document.
3. the method for claim 1, wherein in case to file fragment of one or more server requests, the transmission rate of server is high more, and then the file fragment of being asked is big more.
4. the method for claim 1 wherein under the situation of the file fragment of asking from one or more Server Transport respectively, is recorded in the information of transmission fragment on the journal file.
5. method as claimed in claim 4, wherein subscriber equipment described journal file of reference when a plurality of fragments with institute's transfer files are merged into single file.
6. the method for claim 1, wherein this document transmission method also comprises step: after a plurality of fragments with this document are merged into the step of single file, finishing of file transfer is notified to file management system.
7. the method for claim 1 is wherein receiving the step of the file fragment of being asked from one or more servers, no matter when receives a certain size a plurality of packets, all will detect the transmission rate of each server.
8. method as claimed in claim 7 wherein, if exist a transmission rate to be lower than the server of a predetermined value, then substitutes this failed server by another server.
9. method as claimed in claim 8 if there is not alternative server, then receives the information of the transmission rate of a plurality of equipment of storage this document and these equipment once more, and determines alternative server according to this information.
10. the method for claim 1, wherein this equipment is represented an equipment that can be used for data communication, for example personal computer, work station, minicom, mainframe computer, notebook computer, PDA (personal digital assistant) or the like.
11. the method for claim 1, wherein this network represent one can intercommunication environment, for example wired Internet, wireless Internet, LAN (local area network (LAN)), in-house network and extranets.
12. method as claimed in claim 12 wishes that wherein the file that receives has a public documents identifier in the equipment of storage this document.
13. the method for claim 1, wherein file management system is one of a plurality of equipment by the network connection.
14. the method for claim 1, wherein file management system is divided into a plurality of equipment that connect by network.
15. the method for claim 1, the information of wherein storing a plurality of equipment of this document comprises these equipment mark symbols, position and transmission rate.
16. the method for claim 1, wherein this document transmission method further comprises information stores the step meta file in of subscriber equipment with merge file.
17. method as claimed in claim 16 wherein when merge file is transferred to miscellaneous equipment once more, checks whether the information of this document is identical with the information that writes down on meta file.
18. comprising, the method for claim 1, wherein said transmission download and data flow technique.
19. a method of calling file is applied to comprise step with single file division and be stored under the situation of a plurality of equipment that connect by network:
Receive the information of the equipment of a plurality of fragments of relevant storage this document from the file management system of a management document transmission;
Among a plurality of equipment of a plurality of fragments of storage this document, determine to be used to transmit one or more servers of this document;
Receive a plurality of fragments of this document from determined one or more servers; With
A plurality of fragments of institute's transfer files are merged into single file.
20. method as claimed in claim 19, wherein a plurality of fragments of this document belong to identical file.
21. a method of giving a plurality of equipment the many equipment that connect by network from a device transmission with a file comprises step:
A described equipment is transferred to the fastest equipment in described a plurality of equipment with this document;
By this way this document is transferred to the slowest equipment downwards, the fastest equipment that has promptly received this document is transferred in described a plurality of equipment the second fast equipment with this document, the second fast equipment that has received this document with this document be transferred to the 3rd fast equipment and
If a wherein described equipment has been finished the file transfer of an equipment in described a plurality of equipment, then this document is transferred to another equipment in described a plurality of equipment.
22. a method of giving a plurality of equipment the many equipment that connect by network from a device transmission with a file comprises step:
A described equipment is transferred to described a plurality of equipment with this document; With
If transmission quantity surpasses a pre-determined amount, a then described equipment only is transferred to this document the fastest equipment in described a plurality of equipment, receive this document from described equipment, this fastest equipment is transferred to this document the miscellaneous equipment in described a plurality of equipment simultaneously.
23. as claim 21 or 22 described methods, wherein said transmission comprises downloads and data flow technique.
24. the method as a demand file transmission identical file comprises step:
This document is divided into a plurality of intended fragments, and stores the information of each fragment part;
In response to the transmission request of this document, this document is divided into a plurality of intended fragments to extract the information of the described part of each fragment;
Compare the information and canned data in meta file extracted; With
If they are identical as a result as a comparison, then transmit this document, if different, then a specific file identifier is offered this document.
25. the method as demand file transmission identical file comprises step:
A) this document is divided into a plurality of intended fragments, by a coding function each fragment of encoding, and in meta file each coding of storage;
B) in response to the transmission request of this document, this document is divided into a plurality of intended fragments, and each fragment coding is become a coding function;
C) coding result comparison step b) and the information that in meta file, writes down;
D) if they are identical as a result as a comparison, then transmit this document,, then a specific file identifier is offered this document if different.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2001/000499 WO2002093846A1 (en) | 2001-03-28 | 2001-03-28 | Method of transferring a divided file |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1494790A true CN1494790A (en) | 2004-05-05 |
Family
ID=19198365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA018231020A Pending CN1494790A (en) | 2001-03-28 | 2001-03-28 | Cooperation method of transferring divided file under network environment |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2004531824A (en) |
| CN (1) | CN1494790A (en) |
| WO (1) | WO2002093846A1 (en) |
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| CN101877604A (en) * | 2010-06-22 | 2010-11-03 | 中兴通讯股份有限公司 | Method and system for transmitting files |
| CN101964080A (en) * | 2009-07-21 | 2011-02-02 | 国际商业机器公司 | Be used for file as method and the system thereof of fragments store on memory element |
| CN102467558A (en) * | 2010-11-19 | 2012-05-23 | 海尔集团公司 | Method for storing and updating device description file |
| CN101098322B (en) * | 2006-06-30 | 2012-07-04 | 佛山市顺德区顺达电脑厂有限公司 | Data transmission method and information device using the same |
| CN1812410B (en) * | 2005-01-25 | 2013-03-06 | 台湾积体电路制造股份有限公司 | File transfer management systems and methods |
| CN103078853A (en) * | 2012-12-31 | 2013-05-01 | 华为软件技术有限公司 | Data transmission method on basis of session initiation protocol and corresponding device |
| CN103347077A (en) * | 2013-07-03 | 2013-10-09 | 曙光信息产业(北京)有限公司 | Method and device for data transmission of distributed file system |
| CN103516584A (en) * | 2012-06-28 | 2014-01-15 | 北京奇虎科技有限公司 | Method and device for transmitting file in instant messaging |
| CN106210065A (en) * | 2016-07-13 | 2016-12-07 | 广东欧珀移动通信有限公司 | A kind of document transmission method, device and mobile terminal |
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|---|---|---|---|---|
| FI105754B (en) * | 1995-06-12 | 2000-09-29 | Nokia Oy Ab | Transfer protocol for transferring files on the DAB system |
| FI98676C (en) * | 1995-10-05 | 1997-07-25 | Nokia Oy Ab | Transfer of a file group in a digital broadcast radio system |
| FI100562B (en) * | 1996-01-30 | 1997-12-31 | Nokia Oy Ab | Encoding of file segments in a digital radio channel |
-
2001
- 2001-03-28 WO PCT/KR2001/000499 patent/WO2002093846A1/en active Application Filing
- 2001-03-28 JP JP2002590595A patent/JP2004531824A/en active Pending
- 2001-03-28 CN CNA018231020A patent/CN1494790A/en active Pending
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| CN101098322B (en) * | 2006-06-30 | 2012-07-04 | 佛山市顺德区顺达电脑厂有限公司 | Data transmission method and information device using the same |
| CN101964080A (en) * | 2009-07-21 | 2011-02-02 | 国际商业机器公司 | Be used for file as method and the system thereof of fragments store on memory element |
| CN101964080B (en) * | 2009-07-21 | 2013-04-17 | 国际商业机器公司 | Method and system for storing a file as slices on storage elements |
| CN101877604A (en) * | 2010-06-22 | 2010-11-03 | 中兴通讯股份有限公司 | Method and system for transmitting files |
| CN101877604B (en) * | 2010-06-22 | 2015-01-28 | 中兴通讯股份有限公司 | Method and system for transmitting files |
| CN102467558A (en) * | 2010-11-19 | 2012-05-23 | 海尔集团公司 | Method for storing and updating device description file |
| CN103516584A (en) * | 2012-06-28 | 2014-01-15 | 北京奇虎科技有限公司 | Method and device for transmitting file in instant messaging |
| CN103516584B (en) * | 2012-06-28 | 2017-06-09 | 北京奇虎科技有限公司 | A kind of method and device for transmitting file in instant messaging |
| CN103078853A (en) * | 2012-12-31 | 2013-05-01 | 华为软件技术有限公司 | Data transmission method on basis of session initiation protocol and corresponding device |
| CN103347077A (en) * | 2013-07-03 | 2013-10-09 | 曙光信息产业(北京)有限公司 | Method and device for data transmission of distributed file system |
| CN106210065A (en) * | 2016-07-13 | 2016-12-07 | 广东欧珀移动通信有限公司 | A kind of document transmission method, device and mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002093846A1 (en) | 2002-11-21 |
| JP2004531824A (en) | 2004-10-14 |
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