KR102218812B1 - Method and system for monitoring data transfer state based on file transfer rate - Google Patents

Abstract

The present invention relates to a method for managing file transmission, and the method for transmitting a file according to the present invention comprises the steps of: receiving, by a file transmission system, a request for transmitting a file from a sending side to a receiving side; Setting a transmission path for transmitting the file via a data center existing between the transmitting side and the receiving side; Determining a division criterion for dividing the file into a plurality of pieces for each transmission path; And individually transmitting the fragment files divided according to the division criterion according to the transmission path. According to the present invention, files are distributed into multiple fragments and simultaneously distributed across multiple networks, thereby enhancing security and temporarily expanding a bandwidth, thereby dramatically improving a transmission speed.

Description

Method and system for monitoring data transfer state based on file transfer rate}

The present invention relates to a method for managing file transmission, and more particularly, to a structure for distributed transmission over multiple networks for high-speed transmission of files.

Today, many organizations, such as corporations and government agencies, have to transfer large files between different cities or long distances, but there is no special method for transferring large files. Even if the bandwidth between the origin and destination is 10MB, in actual long-distance transmission, less than 5% of 10MB per second can be used, so if you transfer a 10TB file, it takes about 200 days or more using 5Mbps, which is 5% of 100Mbps. Even if you can use 100% of the bandwidth of 100Mbps, it takes about 10 days.

It is known to divide files using HTML5 and transmit them in parallel to transmit them at high speed, but it is already well known that the transmitted files can be easily exposed and that HTTPS is also very vulnerable to hacking using forged certificates, so it is not secure. .

In addition, the larger the file size and the longer the transmission time is, the more times the transmission may be interrupted due to network failures during the transmission process, and the transmission cannot be completed due to numerous natural or artificial file alterations. It is only repeated and the transfer cannot be completed forever. For many organizations facing the need to transfer files, the only option currently is to copy files to a physical storage device and actually move and copy that device.

As the amount of file transfer increases rapidly, the purchase of physical storage devices, physical transportation of equipment, and labor costs required for transmission management are also rising rapidly. Human errors and loss of files that occur during human copying and verification processes In addition to the increase in retransmission cost and total transmission time, the potential risk of loss and leakage of files during transport is also emerging as a serious problem.

In order to transfer large files over long distances, by dividing files using FTP, UDP, etc. and transmitting them in parallel, the bandwidth available for long distance transfers can be used close to 100%. However, in order to use FTP or UDP, the port must be opened. And, it cannot be widely used due to a security threat.

The present invention is to dramatically improve security threats and bandwidth limitations of protocols used for conventional file transmission, automated response to failures occurring in the transmission process, inconvenience of use, etc., and to improve file transmission speed. have.

A file transmission method according to the present invention for solving the above technical problem comprises the steps of: receiving, by a file transmission system, a request for transmitting a file from a sending side to a receiving side; Setting a transmission path for transmitting the file via a data center existing between the transmitting side and the receiving side; Determining a division criterion for dividing the file into a plurality of pieces for each transmission path; And individually transmitting the fragment files divided according to the division criterion according to the transmission path.

The data center is classified based on an area in which the data center is located, and in the step of setting the transmission path, it is preferable to determine a data center of an area through which the file is transmitted.

In the step of setting the transmission path, it is preferable to determine a data center of the passing area according to a geographic location and distance between an area in which the transmitting side and the receiving side are located.

The step of setting the transmission path includes setting a plurality of transmission paths for each region to be passed through, and the file transmission method further includes providing a list of the determined plurality of paths according to a transmission time and a transmission cost.

In the transmitting step, it is preferable to transmit the fragment file using HTTP (Hyper Text Transfer Protocol).

In the transmitting step, when transmitting between the transmitting side and the first data center on the transmission path, or between the last data center on the transmission path and the receiving side, the fragment file is preferably divided into a plurality of communication lines and transmitted. .

It is preferable that the first data center is a data center in a region where the transmitting side is located, and the last data center is a data center in a region where the receiving side is located.

In the receiving step, when a request for transmitting a plurality of files above a reference is received, the plurality of files are merged into a single file, and the determining of the splitting criterion includes a splitting criterion for dividing the merged single file for each transmission section It is desirable to decide.

The file transmission method further includes the step of encrypting the divided fragment file, and the transmitting step preferably transmits the encrypted fragment file to the first data center.

The file transmission method further includes the step of decrypting the divided fragment file, and the transmitting step includes decoding the encrypted fragment file received from the last data center on the transmission path and transmitting it to the receiving side. desirable.

The file transmission method further includes comparing a transmission state of a transmission side and a reception state of a reception side of the fragment file, and providing transmission state information of the file according to the comparison result.

A file transmission system according to the present invention for solving the above technical problem includes: a transmission request receiving unit for receiving a request for transmitting a file from a transmitting side to a receiving side; A transmission path setting unit configured to set a transmission path for transmitting the file via a data center existing between the transmitting side and the receiving side; A file division criterion determining unit for determining a division criterion for dividing the file into a plurality of pieces for each transmission path; And a file transmission unit that individually transmits the fragmented file divided according to the division criterion according to the transmission path.

According to the present invention, files are distributed into multiple fragments and simultaneously distributed across multiple networks, thereby enhancing security and temporarily expanding a bandwidth, thereby dramatically improving a transmission speed. In addition, users can transfer large files safely, completely, and at low cost by utilizing multiple line providers and data centers distributed around the world at the point of transmission without the need to purchase expensive bandwidth.

1 and 2 are diagrams illustrating a system environment in which a file transmission method according to an embodiment of the present invention is performed.
3 is a diagram illustrating a system configuration in which a file transmission method according to an embodiment of the present invention is performed.
4 is a diagram illustrating a transmission path for a file transmission method according to an embodiment of the present invention.
5 is a diagram illustrating a user interface for selecting a file transmission method according to an embodiment of the present invention.
6 is a diagram illustrating division of a file for each transmission path in a file transmission method according to an embodiment of the present invention.
7 and 8 are diagrams illustrating a configuration of a transmission side in which a file transmission method according to an embodiment of the present invention is performed.
9 is a diagram illustrating determining a transmission rate in a file transmission method according to an embodiment of the present invention.
10 is a diagram illustrating that a transmitting side merges files in a file transmission method according to an embodiment of the present invention.
11 is a diagram illustrating that a receiver merges files in a file transmission method according to an embodiment of the present invention.
12 is a diagram illustrating the hijacking of a file in a file transmission method according to an embodiment of the present invention.
13 is a diagram illustrating encryption of a file in a file transmission method according to an embodiment of the present invention.
14 is a diagram illustrating monitoring of a transmission state in a file transmission method according to an embodiment of the present invention.
15 is a diagram illustrating a system configuration in which a file transmission method according to an embodiment of the present invention is performed.
16 to 21 are diagrams illustrating a flow of performing a file transmission method according to an embodiment of the present invention.

The following content merely illustrates the principle of the invention. Therefore, although those skilled in the art can implement the principles of the invention and invent various devices included in the concept and scope of the invention, although not clearly described or illustrated herein. In addition, it should be understood that all conditional terms and examples listed in the present specification are, in principle, clearly intended only for the purpose of understanding the concept of the invention, and are not limited to the specifically listed embodiments and states. .

The above-described objects, features, and advantages will become more apparent through the following detailed description in connection with the accompanying drawings, and accordingly, a person having ordinary knowledge in the technical field to which the invention belongs will be able to easily implement the technical idea of the invention. .

In addition, when it is determined that a detailed description of a known technology related to the invention may unnecessarily obscure the subject matter of the invention, a detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a system environment in which a file transmission method according to an embodiment of the present invention is performed.

Referring to FIG. 1, the file transmission system 100 according to the present embodiment transmits files between the transmitting side 10 and the receiving side 20 existing in countries around the world, and a data center and a hub system located in each country. Together with the like, the file transmitted from the transmitting side 10 is transmitted to the receiving side 20 more quickly and safely.

The file transmission system 100 according to the present embodiment is located in each country, and is established according to the purpose of a company or organization, and has a data center for storing and distributing big data and a data hub for processing information collected from a variety of sources. It consists of one data distribution network 30, divides it according to each region, and transmits a file between the transmitting side 10 and the receiving side 20.

That is, the file transmission system 100 configures a single distribution network 30 with no distinction between the operating entity of the data center and the data hub, and sets a transmission path according to the regional standard of the transmission/reception side 20.

Referring to FIG. 2, the data distribution network 30 is managed by grouping heterogeneous data centers, hub systems, and cloud servers into one data station based on a city, and the data center within the data station in the file transfer system 100 , Hub system, cloud server, etc. can be selected to configure the route.

Specifically, the file transmission system 100 is a data center (hub system, cloud server, etc.) in the transit group depending on the location of the transmitting side 10 and the receiving side 20, the size or type of the file to be transmitted, whether encryption is required, etc. It may be decided to pass through and transmit data serially according to the transmission method, or may transmit data in parallel through multiple data centers. In addition, the data center can be included in the same path even if the entities operating the data center are different.

For example, FIG. 2 illustrates a data station determined based on a city among the data distribution network 30.

That is, the data station in Seoul can be composed of Amazon Cloud, Microsoft Azure, Google Cloud, and local data center A.

The data station in London can be composed of MS Azure, Google Cloud local data center B, and hub system A, and the data station in New York can be composed of Amazon Cloud, IBM Cloud, local data center D, and hub system B.

Therefore, when the file transmission system 100 passes through a data station in London for file transmission between the transmitting side 10 located in Seoul and the receiving side 20 located in New York, the first Amazon Cloud in Seoul, The path can be configured to transmit data between the transmitting and receiving sides 20 using MS Azure and IBM Cloud in New York.

It is also possible to include data center and hub systems in the path.

For example, it is possible to configure the route through local data center A in Seoul, MS Azure in London, and hub system B in New York.

That is, when configuring a path, a data center, a local data center, a cloud server, and a hub system can be selected without distinction, and thus cannot be limited to any one. However, in the following description, for convenience of description, an example is given centering on a data center as a device that passes between data transmissions.

As described above, the file transmission system 100 according to the present embodiment divides a file in a single transmission to overcome the bandwidth limitation that occurs when large files are transmitted over long distances between data centers constituting the data distribution network 30. It can be divided into pieces, and the pieces can be transmitted via multiple data centers simultaneously.

Therefore, even if a user does not purchase an expensive bandwidth, it is characterized by temporarily expanding and using a large amount of bandwidth using lines of data centers distributed around the world at the time of transmission.

Hereinafter, it will be described in more detail with reference to FIG. 3.

3 shows in more detail a situation in which data is transmitted between the transmitting side 10 located in Seoul and the receiving side 20 located in New York.

Referring to FIG. 3, when transmitting a file, the file transmission system 100 may divide a file into a plurality of pieces and transmit the file in parallel.

The file 500 of the transmitting side 10 is divided into 4 pieces and transmitted according to each path, and the receiving side 20 combines and reconstructs the 4 file pieces, and then stores the file 500 in the memory. have.

The four fragment files are transmitted via distributed data centers, and in this case, the fragment files can be individually executed in a real-time manner in which a part is transferred to the next destination as soon as a part arrives at each data center. Therefore, it is different from the existing Grid system and Contents Delivery Network, which stores files as a whole and transmits them according to requests. Email, cloud, messenger, etc. that the other party receives after the files are uploaded to the relay server. There is a difference from the transmission method of

Specifically, fragment A (500a) of the transmitting side 10 located in Seoul may be transmitted to the final data center E (32e) in New York via the first three data centers through the data center A (32a) in Seoul. . Fragment B (500b) may be transmitted to data center F (32f) in New York via two data centers for the first time through data center B (32b) in Seoul. Fragment C (500c) may be transmitted to data center G (32g) after first passing through one data center through data center C (32c).

Finally, fragment D (500d) may arrive at data center H (32h) after passing through two data centers in data center D (32d).

When the above file fragments arrive at the data center of the receiving side 20, they may be combined and reconstructed and stored in the memory device of the receiving side 20.

At this time, the file transmission system 100 for transmitting the file identifies the geographic location and distance between the origin of the transmitting side 10 and the destination of the receiving side 20, and uses a smart route search engine to determine the location of the origin and the destination. Explore multiple data centers or hub systems.

Hereinafter, a method of determining a route by the smart route search engine will be described in more detail.

FIG. 4 is a diagram illustrating in more detail a transit route between data centers according to FIG. 3.

Referring to FIG. 4, the file transmission system 100 grasps the status information of the data center for each city using a smart route search engine, and the available capacity and security between data centers in the data distribution network 30 of the centers for each city The data transmission path is configured in real time through various attribute information such as sex, protocol used for transmission, and encryption algorithm.

For example, data center A in Seoul transfers files to data center E in New York, via data center 1 and data center 2 in Tokyo, and data center 5 in LA.

At this time, it is possible to include transit between data centers in Tokyo within the same area, and it is also possible to determine a route through the same data center for reasons of protocol change, encryption algorithm application, security, etc. according to the requirements of the sending side 10 Do.

In addition, data center C in Seoul can transfer files to data center G in New York via data center 7 in LA without going through a data center in Tokyo.

That is, the fragment files according to the present embodiment may be individually transmitted through different data centers, and therefore, there is no possibility that the entire file is stolen, and even if a part of the file fragment is stolen, the combination of the entire file is impossible. Since there is no possibility of information leakage, the transmission method itself can increase security.

In addition, each data center may be determined according to the arrival timing of the final data center of pieces of files transmitted through different paths. For example, based on the arrival timing of piece A, the data center to be routed through the path of other pieces may be determined, and if piece A overlaps the data center in Tokyo depending on security, some delay occurs. It can be done via a data center with a lower transfer rate. In addition, since Fragment D contains one more pass-through data center than Fragment C, you can choose Data Center 4 and Data Center 6, which have higher transmission rates than Data Center 7.

In addition, when a plurality of searched data centers and hub systems are used, the estimated file transmission time for each path is measured and provided to the user, so that the user can directly select a desired path. In addition, it is possible to provide the user with a cost according to a predetermined billing method for each route.

For example, by using one or more data centers or hub systems between departure and destination, 1) parallel connection and distributed high-speed transmission, 2) serial connection and high-speed transmission, 3) departure and destination 1 :1 When high-speed transmission is performed by connecting, or 4) When additionally transmitted at standard speed using FTP (File Transfer Protocol), cloud, e-mail, etc., it is determined by dividing into cases, and the result is provided through the user interface. It is also possible.

Specifically, referring to FIG. 5, when a user located in Seoul wants to transmit a single file of 10 GB or less to Moscow, a transmission path 52 and 53 using the file transmission system 100 according to the present embodiment, an email or a messenger A menu is created and provided to the user by dividing the case of transmitting by using (54) and the case of transmitting by using the cloud (56), and the user selects an appropriate transmission method from the provided menus to send files to Moscow. The transmission method can be determined.

In addition, for the fastest transfer method, the label “The fastest” can be displayed on the menu 52, and in the case of the transfer impossible method, the label “Cannot transfer” is also displayed on the menu 54 to allow the user to You can make it easier to recognize. Transmission is possible, but for an unstable method, a label “Unstable” can be displayed on the menu 56.

Further, referring to FIG. 5, the user interface may provide a menu 58 for selecting whether a file is a single file or a plurality of files as a characteristic of a file to be transmitted, and a currency unit for calculating a transmission cost.

In the menu for selecting a route, information on transmission time, transmission speed, and transmission cost (discount) is provided together so that the user can more easily determine the transmission method.

When a transmission path is determined according to a selection of a transmission method, the file transmission system 100 according to the present embodiment may determine a criterion for dividing the file into a plurality of pieces for each transmission path.

When a specific transmission method is selected, the number of parallel transmission sessions and the size of the divided fragments of the file are determined for each transmission section in the transmission path, and the file is transmitted at high speed using the maximum bandwidth for each section, and the fragments divided at the destination are converted into the original file.

In this case, the number of sessions or the size of the divided pieces of the file may be determined in consideration of the following environmental variables.

1) Geographical characteristics of transmission section such as long distance and short distance

2) Network characteristics such as bandwidth, delay time, and loss rate

3) Characteristics of the file to be transferred, such as the number of files, capacity, and file format

4) File transmission section characteristics

That is, when the file transmission system 100 according to the present embodiment transmits a file serially through one single path, it can be divided into a plurality of pieces and transmitted in consideration of the environment variable of the single path, as shown in FIG. When a file is divided into a plurality of file fragments in the local system of the transmitting side 10 in order to transmit a file in parallel, a division criterion for each transmission section of the file fragment may be determined.

In addition, in the case of each data center that transmits the divided fragments, the required policies may be different, so compatibility with various networks may be considered during transmission. Therefore, it is possible to set the HTTP protocol as FTP, UDP, HTTPS, etc. as the basic transmission protocol to transmit files without changing a separate network or security policy from different organizations of security policies.

Specifically, referring to FIG. 6, in case of parallel transmission, the number of sessions and the size of the divided fragments are determined for each transmission section for each file fragment so that they can be transmitted to the receiving side 20. For example, file fragment A (500a) may be transmitted through many sessions with a smaller size than fragment B (500b) depending on the characteristics of the transmission section, and file fragment C (500c) and file fragment D (500d) May be divided into similar file sizes and transmitted by varying only the number of sessions according to the difference in the size of the file fragment. In addition, the number and pieces of sessions are determined in consideration of environmental variables, but may be changed in real time for each transit center in order to match the arrival timing of the receiving side 20 of the file.

Hereinafter, a method for extending a network bandwidth when transmitting to the first data center on a transmission path other than transmission between data centers or when transmitting from the last data center to the receiving side 20 will be described.

The file transmission system according to the present embodiment may divide and transmit the fragment file into a plurality of communication lines when transmitting between the transmitting side 10 and the first data center on the transmission path.

Specifically, in order to extend the Internet connection bandwidth, Internet lines of different communication companies may be connected in parallel to the equipment or may be transmitted through a separate device supporting parallel connection of such lines.

For example, referring to FIG. 7, in order for the file 500 in FIG. 3 to be transmitted through four transmission paths, each divided file fragment can be transmitted to the first data center 31 through a different communication line 72. have.

In the case of the file fragment A (500a), the first data center A and the communication line A on the path, and the case of the file fragment B (500b) may be connected to the first data center B and the communication line B.

In general, in the case of a local computer or server on the sender's side, for security and convenience, a system is built through a single communication company's network, and it is configured as an internal network. Therefore, to transmit a piece of file through various data centers, the bandwidth of the communication line There may be problems that are limited to

Therefore, the file transmission system 100 according to the present embodiment configures a separate device capable of using a separate communication line in addition to the communication line of a communication company providing an in-house network when transmitting a large file over a long distance to separate pieces of the file in parallel. It can be configured to transmit to the data center.

For example, as shown in FIG. 8, by configuring a data link device 14 that is directly connected to the memory 12 that stores the file of the transmitting side 10 and can be connected to each communication line, the divided file fragments for parallel transmission are Randomly, the transmission side 10 can be transmitted to the first data center through the distributed Internet communication line 72.

In this embodiment, the data link device 14 is a separate hardware device that enables high-speed transmission of large-capacity files using a plurality of Internet lines by simply connecting any storage or cloud. For example, the mass storage 12 of the transmission side 10 is connected to an optical or multiple cables, multiple USB ports, and an Internet network through the data link device 14, and merges all files in the storage 12. , It can be fragmented and transmitted over multiple lines.

In addition, the receiving side 20 can also configure a data link device between the memory of the receiving side 20 and the last data center on the path with a plurality of communication lines so as to correspond to the transmitting side 10, and the receiving side 20 Also, it is possible to reassemble the original file received through a plurality of communication lines through the data link device.

That is, in the present embodiment, the file transmission system 100 determines a path by combining heterogeneous data centers, hub systems, and clouds, but the local-based communication for first entering the determined path is also independent of the internal network. It provides a faster file transfer method by configuring the system so that it can be accessed through the communication line of.

Further, the receiving side 20 may also configure a data link device between the memory of the receiving side 20 and the last data center on the path with a plurality of communication lines so as to correspond to the transmitting side 10.

When a transmission path is determined through the above process, the file transmission system 100 may transmit fragment files in consideration of a transmission speed of each data center.

Referring to FIG. 9, for example, when a file is transmitted using a distributed data center and a hub system, the transmission speed of the transmitted file can be determined according to the file transmission speed between the transmitting side 10 and the receiving side 20. have. At this time, a transmission cost and a transmission time provided through the menu as shown in FIG. 5 may be determined using the determined file transmission speed, and the smart path search engine may set a transmission path as shown in FIG. 4.

For example, if the data center 33a of the transmitting side 10 and the data center 3 33b of the receiving side 20 have the same file transfer speed, the same speed may be used for real-time transmission. Or, when the transmission speed of the receiving side (20) data center-4 (33f) is high by comparing the transmission speed of the transmitting side (10) data center-1 (33c) and the receiving side (20) data center-4 (33f) , Data center-1 (33c) can be transmitted in real time according to the transmission speed.

Conversely, if the transmission speed of data center-2 (33g) on the sending side (10) is higher than that of data center-5 (33i), the transmission side (10) ends the transmission first, and the reception side (20) According to the transmission speed of the system, the fragments that were cached by each system can be transmitted to the destination to complete the transmission.

The transmission speed at this time may be determined by further considering the transmission speed of the data centers 33d, 33e, and 33h located in the middle of the path in addition to the data center of the transmitting and receiving side, and the transmission speed and expected time calculated more accurately through this can be determined in FIG. It can be provided through the menu of.

In consideration of the transmission path determined according to the above method and the file transmission speed of the data center, the file transmission system 100 determines the transmission speed, enables real-time transmission of each file fragment, and adjusts the arrival timing to reduce the time delay of file recombination. It is also possible to minimize it.

In addition, in the present embodiment, the file transmission system 100 may merge multiple files into a single file when receiving a request for transmission of multiple files above the standard, and transmit the files by subdividing them into a transmission path determined through the merged file. Do.

For example, in the case of document files, the size of each file may be small, but the number may be larger than the standard. In this case, each file is divided into pieces for transmission, or all files are transferred in parallel to transfer each file as it is. Performing read and write operations on the network can be a cause of wasted network resources and delayed transmission.

Accordingly, in the present embodiment, when a plurality of files are distributed and stored in a plurality of storage at a local level, in the present embodiment, the file transfer system 100 merges them into one single file and divides them into file fragments or divides them according to a path. It may be more efficient to determine.

Referring to FIG. 10, for this purpose, the file transfer system 100 according to the present embodiment further configures the file merging device 16 in the local aspect to provide a low-capacity bulk file prior to dividing the file according to the transmission path in the transmission process. If yes, files can be merged.

When files distributed in a plurality of storages 12a, 12b are merged into a single file, files are transferred to file fragments 500a, 500b, 500c, 500d in parallel transmission according to a transmission path determined based on a single file 510 ) Can be divided. Further, as mentioned above, the data link device 14 may use heterogeneous communication lines 72 to transmit the pieces of the file to the original data center. Through this, it is possible to optimize the file transfer up to the speed limit of the device by improving the slowdown due to inefficient use of I/O and network when transferring large amounts of low-volume files.

In addition, referring to FIG. 11, the receiving side 20 also receives the pieces of files received through the plurality of communication lines 74 through the data link device 24, and the file merging device 26 is The file fragments 500a, 500b, 500c, and 500d may be merged into one single file 510 again through the merging rule and then reconfigured to be stored in the storage 22 as a plurality of low-capacity files.

In this case, the merge of files and division according to the transmission path can be performed by reading only a portion required for transmission for each path into the memory, so that only a part of the storage device can be used and the utilization efficiency of the entire equipment can be improved.

The file transmission system 100 according to the present embodiment first divides the file into file fragments for parallel transmission, the second division into file sessions according to the transmission section when the transmission path is determined, and transmission The fact that the section consists of heterogeneous data centers can further increase the security of file transfer.

Referring to FIG. 12, in the process of file transmission according to FIG. 3, one file is basically divided into a plurality of pieces and transmitted randomly across a plurality of lines, so that even if one line is stolen, complete information of the file can be protected. Security can be guaranteed.

Furthermore, when splitting a plurality of file fragments, if the file combination rule is additionally created as a separate encrypted file and included in an arbitrary file fragment and transmitted, even if a plurality of files transmitted from a certain transmission path are stolen, the combination Unless the rules are stolen, files cannot be combined, which further enhances the security of transmitted files.

Additionally, it is also possible to encrypt files prior to transmission through the data center.

Referring to FIG. 13, the file transmission system 100 according to the present embodiment includes a file encryption module 18 and a decryption module 28 at the transmitting side 10 and the receiving side 20 of the file, respectively. The security of the file can be further increased by configuring an encryption/decryption device.

That is, all fragments can be encrypted at the point of origin and decrypted at the destination before transmission with a separate encryption algorithm. At this time, in order to shorten the encryption/decryption time of the file, the source encrypts and transmits each divided file fragment, and even if the data of a specific line is stolen as shown in Fig. 12 on the transmission path, only the encrypted fragment is acquired, so that decryption is impossible. have.

Next, it is possible to reduce separate waiting time required for encryption/decryption by reconstructing the fragments into original files by decoding each fragment at the destination.

In addition, referring to FIG. 14, the file transmission system 100 according to the present embodiment may configure a separate device 140 for monitoring file transmission to provide the user with information on the transmission status of the file. In this case, it is possible to verify the actual transmission state by comparing the transmission state of both sides, away from monitoring the transmission state through the file processing information of either the existing transmission side 10 or the reception side 20.

Furthermore, not only both sides, but also to ensure the reliability of the file transfer status by sharing the transfer status of the file together with the usage status information of the data center among all third users in the file transfer system 100 according to the present embodiment. It is possible. In other words, the user can monitor the transmission status information in real time from a separate device other than the transmission device, and when the transmission is completed, the transmission is notified to both the origin and destination device and the user to prevent the recipient from rejecting transmission, and record even after the transmission is completed. Make it possible to search for the transferred transfers.

Hereinafter, a detailed configuration of the file transmission system 100 according to the present embodiment and a file transmission method through the same will be described with reference to FIGS. 15 to 21 through a flowchart.

Referring to FIG. 15, the file transfer system 100 according to the present embodiment includes a data center management unit 170 that manages each data center including a smart path search engine that manages the data center, and a local file management unit. The local transmission management unit 160 and modules 110, 120, 130, 140, and 150 that receive a user's command for transmitting a file and perform transmission may be configured.

Referring to FIG. 16, the transmission request receiving unit 110 receives a request for transmitting a file from the transmitting side 10 to the receiving side 20 (S10).

Next, the transmission path setting unit 130 sets a transmission path for transmitting the file via a data center existing between the transmission side 10 and the reception side 20 (S20).

When the transmission path is set, the file division criterion determining unit 120 determines a division criterion for dividing the file into a plurality of pieces for each transmission path (S30).

The file transmission unit 140 individually transmits the fragment files divided according to the division criteria according to the transmission path (S40).

In this case, the transmission path may be determined including a plurality of, heterogeneous data centers, hub systems, cloud servers, and the like as transit points, and the data centers may be classified based on an area in which they are located.

Accordingly, the transmission path setting unit 130 determines a data center in a region through which the file is transmitted. In addition, the transmission path setting unit 130 may determine a data center of the passing area according to a geographic location and distance between an area in which the transmitting side 10 and the receiving side 20 are located.

In addition, in this embodiment, the transmission path setting unit 130 sets a plurality of transmission paths for each region to be passed through, and the file transmission system 100 converts the determined plurality of paths into a list according to transmission time and transmission cost. It may further include a list providing unit (not shown) to provide.

That is, the list providing unit may provide the determined paths as a list of transmission paths according to transmission cost, transmission time, etc., as shown in FIG. 5, and receive a transmission method from the user through this.

In this embodiment, the file transmission unit 140 may transmit the fragment file using HTTP (Hyper Text Transfer Protocol). Since each data center may have different required policies, the HTTP protocol is basically used to transmit files without changing a separate network or security policy with compatibility with various networks and organizations of different security policies during transmission. The compatibility between centers can be improved.

Additionally, in the above transmission process, the transmission monitoring unit 150 compares the transmission state of the sending side 10 and the reception side 20 of the fragment file, and provides information on the transmission state of the file according to the comparison result. I can.

In addition, the data center management unit 170 provides information such as the current transmission status of the data centers, the requested protocol, and the degree of security, through which the transmission path setting unit can set the path.

Furthermore, the file transmission unit 140 may perform more efficient transmission in conjunction with local devices.

Hereinafter, the local transmission management unit 160 will be described.

The local transmission management unit 160 may include an encryption unit 162, a decryption unit 164, and a communication line management unit 166.

Referring to FIGS. 17 and 18, the communication line management unit 166 enables transmission through a plurality of communication lines between the transmitting side 10 and the first data center on the transmission path through the above-described data link device (S42).

In addition, the communication line management unit 166 divides and transmits the fragment file into a plurality of communication lines when transmitting between the last data center on the transmission path and the receiving side 20 (S48).

In this case, as described above, the first data center may be a data center in an area where the transmitting side 10 is located, and the last data center may be a data center in an area where the receiving side 20 is located.

That is, the local transmission management unit 160 may manage file transmission/reception between the first and the last data center and the local storage.

In addition, referring to FIG. 19, in the present embodiment, when the transmission request receiving unit 110 receives a request for transmitting a plurality of files above a reference (S12), a plurality of files are merged into a single file through a file merging unit (not shown). It can be done (S14).

In addition, referring to FIG. 20, before transmission, the encryption unit 162 may encrypt the divided fragment file (S41a), and the file transmission unit 140 transmits the encrypted fragment file to the first data center. . In this case, the encrypted fragment file may be transmitted in real time in the order of encryption to perform file transmission without delay.

On the contrary, referring to FIG. 21, the decryption unit 164 decrypts the divided fragment file (S49a), and the file transmission unit 140 decrypts the encrypted fragment file received at the last data center on the transmission path. It is transmitted to the receiving side 20 (S49b).

Transmission to the receiving side 20 is also transmitted in real time in decoding order, thereby preventing a transmission delay due to decoding.

According to the configuration of the present invention, files are distributed into a plurality of fragments, and multiple fragments are simultaneously distributed and transmitted to a network, thereby enhancing security and temporarily expanding a bandwidth to improve a transmission speed.

In addition, users can transmit large files safely, completely, and at low cost by utilizing multiple line providers and data centers distributed around the world at the time of transmission without the need to purchase expensive bandwidth.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the technical field to which the present invention belongs can make various modifications, changes, and substitutions within the scope not departing from the essential characteristics of the present invention. will be.

Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but are for description, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. . The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (2)

In the file transfer status monitoring method,
File transfer system,
Receiving a request from a transmitting side to transmit a plurality of files to a receiving side;
Setting a transmission path for transmitting the file via a data center existing between the transmitting side and the receiving side;
Merging the plurality of files for each transmission path, and determining a division criterion for subdividing the merged file into a plurality of fragment files according to the transmission path;
Individually transmitting the subdivided fragment files according to the division criterion according to the transmission path; And,
Comparing the transmission rate of the transmitting side and the receiving rate of the receiving side to monitor actual transmission status information of the file;
Including,
The transmission path is through a plurality of data centers,
It is determined to transmit the subdivided fragment file to the first transit data center using heterogeneous communication lines,
A method for monitoring a file transfer state, characterized in that the subsequent transit data center is determined according to the arrival timing of the final transit data center of the piece files. In the file transfer status monitoring method,
File transfer system,
Receiving a request from a transmitting side to transmit a plurality of files to a receiving side;
Setting a transmission path for transmitting the file via a data center existing between the transmitting side and the receiving side;
Merging the plurality of files for each transmission path, and determining a division criterion for subdividing the merged file into a plurality of fragment files according to the transmission path;
Individually transmitting the subdivided fragment files according to the division criterion according to the transmission path; And,
Comparing the transmission rate of the transmitting side and the receiving rate of the receiving side to monitor actual transmission status information of the file;
Including,
The transmission path is through a plurality of data centers,
It is determined to transmit the subdivided fragment file to the first transit data center using heterogeneous communication lines,
A program stored in a computer-readable recording medium for performing a file transfer status monitoring method, characterized in that the subsequent transit data center is determined according to the arrival timing of the final transit data center of the piece files.

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