KR101120572B1 - Cloud computing network system and file download method of the same - Google Patents

Abstract

The cloud computing network system of the present invention controls a data file to be transmitted from the cloud member PCs to a client, but when the sum of the data transfer rates of each of the cloud member PCs is lower than the reference transfer rate, a part of the requested file is lost. Controls transfer from the storage server to the client. Therefore, while a large file is distributed and stored in a plurality of cloud member PCs, when the file transfer from the cloud member PCs to the client is not smooth, a part of the file can be provided directly to the client from the storage server.

Description

CLOUD COMPUTING NETWORK SYSTEM AND FILE DOWNLOAD METHOD OF THE SAME}

The present invention relates to a cloud computing network system capable of distributed processing.

In general, a computer (hereinafter referred to as a client) requesting predetermined information in order to receive electronicized information through an arbitrary network, a computer (hereinafter referred to as a server) providing the requested information from the client, and an information transmission path between them The network constituting the network must exist. Among them, the server and the network are not resources that are serviced by only one client. Therefore, a heavy load is applied when responding to requests from a plurality of different clients. As a result, the number of clients that can connect to the server at the same time should be limited, and clients requesting information can only use a portion of the bandwidth allocated to them.

To solve this problem, content providers who sell information through the Internet purchase large numbers of expensive computers that can act as servers to increase the number of users / customers and improve the quality of service. I have to invest heavily in increasing the bandwidth of the network. Content providers should estimate the maximum number of clients and prepare resources for the stable provision of information services. If the information demand does not occur as the maximum number of clients, the content providers will be wasted. If there are more clients requesting information than the maximum number of clients, the problem of providing a normal service still remains.

Accordingly, an object of the present invention is to provide a cloud computing network system capable of providing a service to many clients with limited resources.

Another object of the present invention is to provide a file download method that can minimize the transmission speed degradation by the cloud member PCs when providing a large file from the cloud member PCs to the client.

According to an aspect of the present invention for achieving the above object, a file download method of a cloud computing network system includes: receiving a file request from a client at a main server, wherein the main server is configured to receive the requested file; Selecting cloud member PCs to be provided, providing information about the selected cloud member PCs to the client, receiving the data transfer rate from the cloud member PCs by the main server, and And controlling a portion of the requested file to be transferred directly from a storage server to the client when the sum of data transfer rates of each of the cloud member PCs is lower than a reference transfer rate.

In this embodiment, the file download method includes determining, at the main server, whether the requested file is a hot file, and at the main server, storing the requested file when the requested file is a hot file. Selecting cloud member PCs to which files are distributed and stored, and transmitting, by the control of the main server, a file stored in the storage server to the selected cloud member PCs.

In this embodiment, the file download method further includes the main server partitioning a file stored in the storage server into a plurality of data blocks, wherein the file transfer step comprises: each of the data blocks; And transmitting to the selected cloud member PCs.

In this embodiment, the main server is the data from the cloud member PC having the slowest data transfer rate among the cloud member PCs when the sum of the data transfer rates of each of the cloud member PCs is lower than a reference transfer rate. Instead of the block, the data block stored in the storage server is transmitted to the client.

In this embodiment, the reference transmission rate is set according to the minimum transmission rate required by the client.

A cloud computing network system providing a service in response to a client request in accordance with another aspect of the present invention comprises: a main server, a storage server for storing files to be provided to the client, and a file requested from the client. The main server selects cloud member PCs to provide a file requested from the client, and provides information about the selected cloud member PCs to the client, and receives from each of the cloud member PCs. When the sum of the data transfer rates is lower than the reference transfer rate, a part of the requested file is controlled to be transferred directly from the storage server to the client.

In this embodiment, the main server, a client manager for managing the client, providing the client with information about the cloud member PCs stored the file requested from the client, and a member for managing the cloud member PCs An administrator, and a file distribution manager for downloading the file from the storage server when the file requested from the client is a file. The member manager provides cloud member PC information capable of storing the hot file to the file distribution manager, and the file distribution manager transmits the downloaded file to the cloud member PCs with reference to the cloud member PC information.

In this embodiment, the member manager receives data transfer rate information from the cloud member PCs that transfer the file to the client, and the sum of the data transfer rates of each of the cloud member PCs is greater than a reference transfer rate. When low, control the portion of the requested file to be sent directly from the storage server to the client.

In this embodiment, the file distribution manager divides the file downloaded from the storage server into a plurality of data blocks, and transmits the data blocks to the cloud member PCs, respectively.

In this embodiment, the member manager is provided from a cloud member PC having the slowest data transfer rate among the cloud member PCs when the sum of data transfer rates of each of the cloud member PCs is lower than a reference transfer rate. Information about a data block is provided to the client manager, and the client manager reads from the storage server the same data block as that provided by the cloud member PC having the slowest data transfer rate and provides the same to the client.

In this embodiment, the file requested by the client is any one of an application program file, a game program file, a text data file, a document file, a picture file, a music file, and a video file.

Such a cloud computing network system of the present invention can provide services to many clients with limited resources by distributing files stored in file storage to cloud member PCs. In particular, in a state where a large amount of files are distributed and stored in a plurality of cloud member PCs, when the file transfer from the cloud member PCs to the client is not smooth, a part of the file may be provided directly to the client from the storage server. Therefore, the client can download the desired file at high speed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Cloud Computing Network (CCN) is a network service designed to provide users with software, security solutions and computing power on-demand through virtualization of network and storage resources. The CCN service improves network efficiency, and does not cause a slowdown even when concentrating traffic, thereby providing high quality service. The present invention provides a system to which such a CCN is applied and a file download method thereof.

1 illustrates a cloud computing network system in accordance with a preferred embodiment of the present invention.

Referring to FIG. 1, the cloud computing network system 100 includes a main server 110, a storage server 120, a network 130, clients 141-143, and cloud member PCs 151. -152) and home storages 153-154. The main server 110, the storage server 120, the clients 141-143, the cloud member PCs 151-152 and the home storages 153-154 connect the network 130, which is a communication line such as the Internet. Are interconnected through. The internet line connected between the main server 110 and the clients 141-143 is a finite resource, and the operator operating the main server 110 to increase the capacity of the line is an internet data center (IDC) or an ISP (internet). You have to pay the service provider more lines. Therefore, an operator operating the main server 110 requires an effort to efficiently provide services to the clients 141 to 143 with a limited line.

The storage server 120 stores files provided by an operator (content provider) that provides a large amount of data such as an application program file, a game program file, a text data file, a document file, a picture file, a music file, a video file, a barcode file, and the like. . Files stored in the storage server 120 may be provided to the clients 141 to 143 under the control of the main server 110.

The main server 110 controls the files stored in the storage server 120 to be provided to the clients 141-143 in response to the file request of the clients 141-143. The main server 110 distributes and stores the files stored in the storage server 120 to the cloud member PCs 151-152 in order to efficiently use the limited resources of the network 130, and the clients 141-143. ) To download files from the cloud member PCs 151-152 instead of the storage server 120.

Clients 141-143 connect to main server 110 via network 130 using a personal computer. The clients 141-143 request download of some of the files that the main server 110 can provide, and under the control of the main server 110, the storage server 120 or the cloud member PCs 151-152. Download the file you want from. The clients 141-143 may be various handheld terminals capable of wireless Internet such as a personal digital assistant (PDA), a mobile phone, etc., as well as a personal computer such as a desktop computer and a notebook.

The clients 141-143, which are connected to the main server 110 via the network 130, are memory (not shown) that stores client software programs necessary for downloading files from the cloud member PCs 151-152. Wherein the client software program is executed by a processor (not shown).

The cloud member PCs 151-152 are connected to the main server 110 via the network 130 using a personal computer. The cloud member PCs 151-152 download a file stored in the storage server 120 under the control of the main server 110, and transmit the file to the clients 141-143.

The home storages 153-154 are connected to the main server 110 via the network 130, like the cloud member PCs 151-152. Home storage 153-154 is a storage device separate from the personal computer. Each of the home storages 153-154 includes a processor, a memory for storing software required for the operation of the processor, a hard disk drive for storing a file, an input / output interface, and the like. These home storages 153-154 store files provided from the main server 110 in response to the control of the main server 110, and provide stored files in response to requests from the clients 141-143. .

2 is a diagram illustrating a configuration of the main server 110 illustrated in FIG. 1.

Referring to FIG. 2, the main server 110 includes a client manager 111, a master manager 112, a member manager 113, and a file distribution manager 114. The client manager 110 discloses a list of files stored in the storage server 120 and available to the clients in a web browser. The clients 141-143 request the download of the files included in the file list of the web browser. The client manager 111 is responsible for managing the clients 141-143 requesting files. That is, the client manager 111 determines that the file requested from the clients 141-143 is a hot file according to the number of clients requesting the same file, the number of clients downloading the same file for a predetermined time, the traffic for the file, and the like. Determine whether The client manager 110 controls the requested file to be transferred from the storage server 120 to the clients 141-143 if the file requested by the clients 141-143 is not a hot file. The client manager 110 stores the master manager 112 and the member such that the file stored in the storage server 120 is distributed to the cloud member PCs 151-152 if the file requested from the clients 141-143 is a hot file. The manager 113 is controlled.

The member manager 113 manages cloud member PCs 151-152 and home storages 153-154. That is, the cloud member PCs 151-152 and home storages 153-154 may be powered on, connected to the network 130, and may be downloaded to cloud member PCs and home storages. Collect information periodically. The member manager 113 provides the file distribution manager 114 with information about the collected cloud member PCs and home storages.

The file distribution manager 114 downloads and stores a hot file from the storage server 120 under the control of the master manager 112, and stores the stored hot file in the cloud member PCs 151-152 and the home storages 153-. 154 distributed transmission. The client manager 111 transmits information about the cloud members 151-152 and the home storages 153-154 in which the file requested by the clients 141-143 is stored, to the clients 141-143. .

The master manager 112 controls the file distribution manager 114 to download the hot file from the storage server 120, and checks whether the hot file downloaded by the file distribution manager 114 is in error.

The client manager 111, the master manager 112, the member manager 113, and the file distribution manager 114 included in the main server 110 may be integrated into a single manager. In addition, each of the client manager 111, the master manager 112, the member manager 113, and the file distribution manager 114 may be configured as a computer in which a software program for performing a predetermined function is embedded. May be called.

3 is a diagram conceptually illustrating a file transmitted to cloud member PCs and home storages by the file distribution manager illustrated in FIG. 2.

Referring to FIG. 3, the file distribution manager 114 divides the file D_FILE downloaded from the storage server 120 into a plurality of data blocks B0-Bn. The size of the file D_FILE downloaded from the storage server 120 to the file distribution manager 114 may range from several tens of megabytes (MByte) to several hundred megabytes. In order to efficiently distribute and store the large file D_FILE in the cloud member PCs 151-152, the file distribution manager 114 of the present invention stores the downloaded file D_FILE in small data blocks B0-Bn. Divide by)

4 conceptually illustrates a client downloading data blocks from cloud member PCs and home storage.

Referring to FIG. 4, the cloud member PCs 410-430 and the home storage 440 respectively store data blocks B0-B3 of a file requested by the client 400. In this embodiment, the three cloud member PCs (410-430) and one home storage 440 is shown and described as the distributed storage of the data blocks (B0-B3), n data blocks are distributed storage The number of cloud member PCs and home storages may vary depending on the communication environment, the transfer rate required by the client 400, the number of clients requesting a file, and the like.

In response to the file request from the client 400, the main server 110 receives information about the cloud member PCs 410-430 and the home storage 440 in which the data blocks B0-B3 of the requested file are stored. To 400. Client 400 accesses cloud member PCs 410-430 and home storage 440 in accordance with information provided from main server 110, and from cloud member PCs 410-430 and home storage 440. Download the required data blocks B0-B3 respectively. Client 400, cloud member PCs 410-430, and home storage 440 are interconnected via a network 405, such as the Internet.

For example, if the file requested from the client 400 and downloaded from the cloud member PCs 410-430 and the home storage 440 is a movie file, the movie file may range in size from several hundred megabytes to several gigabytes. In order to provide such a large file to the client 400 at a high speed, the data transfer speed to the cloud member PCs 410-430 and the home storage 440 should be greater than or equal to a certain speed. Data from cloud member PCs 410-430 and home storage 440 to client 400 due to problems in cloud member PCs 410-430 and home storage 440 or errors in network 405, etc. If the transmission rate is less than or equal to a certain rate, the transmission quality required by the client 400 may not be satisfied. Therefore, the Clandand network system of the present invention transmits data blocks directly from the storage server 450 when the data transfer rate from the cloud member PCs 410-430 and the home storage 440 to the client 400 is lower than the reference rate. It has a structure that can.

The member manager 113 shown in FIG. 2 provides information on the transfer rate of each of the data blocks B0-B3 provided from the cloud member PCs 410-430 and the home storage 440 to the client 400. Receive from the cloud member PCs 410-430 and the home storage 440. If the sum of the transfer rates of each of the data blocks B0-B3, that is, the total transfer rate is lower than the reference rate, the member manager 113 displays information about the cloud member PC or the home storage having the lowest transfer rate. (111). The client manager 111 stores the data block Bk stored in the storage server 450 in place of the data member transmitted from the cloud member PC or the home storage having the lowest transfer rate or the data according to the information provided from the member manager 113. 400 directly. The client 400 downloads the desired file from the cloud member PCs, the home storage and the storage server 450, and may satisfy the required transmission speed.

In this embodiment, the client manager 111 informs the client manager 111 of the cloud member PC or the home storage having the lowest transfer rate. However, if the total transfer rate of the cloud member PCs and the home storage is significantly slower than the reference rate, 113 may control data blocks to be downloaded directly from the storage server 450 to the client 400 instead of two or more cloud member PCs and home storage.

FIG. 5 is a flowchart illustrating a method in which a main server distributes files according to a request of a client of the cloud computing network system shown in FIG. 1.

Referring to FIG. 5, the main server 110 receives state information from cloud member PCs 151-152 and home storages 153-154 (510). In FIG. 5, cloud member PCs 151-152 and home storages 153-154 are collectively referred to as cloud member PCs. Cloud member PCs can provide cloud services using personal PCs, and cloud services can be provided using home storage. State information transmitted from the cloud member PCs 151-154 to the main server 110 includes a maximum bandwidth, a stored data size, an available disk capacity, and the like. The member manager 113 in the main server 11 selects a member to which the file is distributed based on such information, and provides compensation for the member.

Main server 110 receives a file request from clients 141-143 (512). In this exemplary embodiment, the client 141 requests the main server 110 to download the file F1 stored in the storage server 120.

The client manager 111 of the main server 110 determines whether the file F1 requested by the client 141 is a hot file (514). Hot files refer to popular files that have been requested or have been downloaded from a large number of clients. For example, the client manager 111 may request that 100 clients request a download of the file F1 for 5 minutes, or that the file F1 is being downloaded to 20 clients at the same time, or the traffic is 10 GB or more. In this case, the file F1 can be classified as a hot file.

If the file F1 requested by the client 141 is not a hot file, the client manager 111 controls 540 to transmit the file F1 stored in the storage server 120 to the client 141.

If it is determined that the file F1 requested by the client 141 is a hot file, the client manager 111 determines whether the file F1 is distributed and stored in the cloud member PCs 151-154. (516). If the hot file is distributed and stored in the cloud member PCs 151-154, the cloud manager 111 transmits information about the cloud member PC in which the file F1 is distributed and stored to the client 141 (522). Information about the cloud member PC is provided from the member manager 113. The client 141 refers to the cloud member PC information received from the client manager 111 and downloads the desired file F1 from the cloud member PCs.

If the file F1 is not distributed and stored in the cloud member PCs 151-154, that is, if the file F1 is newly classified as a hot file, the client manager 111 is a master manager 112, a member manager. Request the distributed storage for the file F1 to the 113 and the file distribution manager 114. The member manager 113 collects information on the cloud member PCs 151-154, and provides the file distribution manager 114 with information about cloud member PCs capable of transferring files according to the collected information.

The file distribution manager 114 downloads the file F1 from the storage server 120 and divides the downloaded file D_FILE into a plurality of data blocks B0-Bn (518). The file distribution manager 114 transmits the divided data blocks B0-Bn to the cloud member PCs 151-154, respectively. The file distribution manager 114 transmits the data blocks B0-Bn to the cloud member PCs whose files are to be distributed and stored according to the cloud member PC information provided from the member manager 113 (520). In this case, the file D_FILE may be maintained as a single file or divided into a plurality of blocks, depending on the size of the downloaded file D_FILE and the number of clients requesting the file D_FILE. Can be. In addition, the file D_FILE or file blocks may be transmitted only to a specific cloud member PC or distributed and stored in the plurality of cloud member PCs 151-154. For example, if the demand for file F1 is high, it may be distributed to a larger number of client members. If the demand for file F1 is low, it may be distributed to a smaller number of client members.

When the file transfer is completed by the file distribution manager 114 to the cloud member PCs 151-152, the client manager 111 sends the client 141 to the cloud member PCs in which the data blocks B0-Bn are stored. Information about the transmission is transmitted (522). The client 141 downloads the data blocks B0-Bn by accessing the cloud member PCs 151-154 through the network 130 according to the cloud member PC information provided from the client manager 111. The client 141 must have a client software program necessary to download a file from the cloud member PCs 151-154. The client software program may be provided to the client 141 by the client manager 111 in advance.

The member manager 113 in the main server 110 receives data transmission rate information from the cloud member PCs 151-154 that are transmitting the data blocks B0-Bn to the client 141 (524).

If the sum of the data transfer rates received from the cloud member PCs 151-154 is lower than the reference rate (526), the main server 110 may determine that some of the data blocks B0-Bn are part of the cloud member PCs ( In operation 528, the storage server 120 transmits the data from the storage server 120 to the client 141 instead. The reference rate compared with the sum of the data transfer rates received from the cloud member PCs 151-154 is determined in accordance with the file download rate required by the client 141. In this case, the main server 110 may control the data block provided from at least one cloud member PC having the slowest transmission rate among the data blocks B0-Bn to be transmitted from the storage server 120 to the client 141. have.

According to the present invention as described above, a file having many download requests by the clients 141-143 is distributed to the cloud member PCs 151-152 and stored therein, and a file download request from the clients 141-143 may be stored. When the file is provided through the cloud member PCs 151-152 instead of the storage server 120, the limited network 130 resources may be efficiently used. In addition, when the data transfer rate from the cloud member PCs 151-154 to the client 141 is slower than the reference speed, the main server 110 is read from the storage server 120 as well as the cloud member PCs 151-154. By providing some data blocks to the client 141, the data download rate required by the client 141 may be satisfied.

In particular, when downloading a large file from the plurality of cloud member PCs 151-154, the transfer speed of the cloud member PCs 151-154 by providing a portion of the file directly from the storage server 120 to the client 141. It can compensate for the degradation, allowing you to download large files safely and quickly.

The present invention can be used for short periods of time, such as bug patches and upgrades of software, as well as TV broadcasting, cable broadcasting, movies, internet lectures, product advertisements, video broadcasting such as adult broadcasting, internet karaoke broadcasting, image caching, real-time music listening, and online game downloads. It can be used to improve the download quality of files in the field where the number of users explosively increases. According to the present invention as described above, it will be helpful to the industrial development by minimizing the cost burden of the enterprise and quickly delivering various contents and files without obstacles.

1 illustrates a cloud computing network system in accordance with a preferred embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration of the main server shown in FIG. 1.

3 is a diagram conceptually illustrating a file transmitted to cloud member PCs and home storages by the file distribution manager illustrated in FIG. 2.

4 conceptually illustrates a client downloading data blocks from cloud member PCs and home storage.

FIG. 5 is a flowchart illustrating a method in which a main server distributes files according to a request of a client of the cloud computing network system shown in FIG. 1.

Claims (11)

Receiving a file request from a client at a main server; Selecting, by the main server, cloud member PCs to provide the requested file, and providing information about the selected cloud member PCs to the client; Receiving, by the main server, a data transfer rate from the cloud member PCs; And And controlling, by the main server, a portion of the requested file to be transmitted from the storage server to the client when the sum of data transfer rates of each of the cloud member PCs is lower than a reference transfer rate. How to download files on a computing network system. The method of claim 1, Determining, at the main server, whether the requested file is a hot file; Selecting, at the main server, cloud member PCs to which the file stored in the storage server is distributed and stored when the requested file is a hot file; And And transmitting the file stored in the storage server to the selected cloud member PCs under the control of the main server. The method of claim 2, The main server further dividing a file stored in the storage server into a plurality of data blocks; The file transfer step, And transmitting each of the plurality of data blocks to the selected cloud member PCs. The method of claim 3, wherein The main server is connected to the storage server instead of a data block transmitted from a cloud member PC having the slowest data transfer rate among the cloud member PCs when the sum of data transfer rates of each of the cloud member PCs is lower than a reference transfer rate. The file download method of the cloud computing network system, characterized in that for transmitting the stored data block to the client. The method of claim 4, wherein The reference transfer rate is set according to the minimum transfer rate required by the client file download method of the cloud computing network system. In a cloud computing network system that provides a service in response to a client request: A main server; A storage server for storing files to be provided to the client; And Cloud member personal computers (PCs) for providing a file requested from the client; The main server selects cloud member PCs to provide a file requested from the client, and provides information about the selected cloud member PCs to the client, wherein the sum of data transfer rates received from each of the cloud member PCs is provided. And a portion of the requested file is transferred from a storage server to the client when the reference transfer rate is lower than the reference transfer rate. The method of claim 6, The main server, A client manager that manages the client and provides the client with information about cloud member PCs storing files requested from the client; A member manager managing the cloud member PCs; And A file distribution manager for downloading the file from the storage server when the file requested from the client is a hot file; The member manager provides cloud member PC information capable of storing the hot file to the file distribution manager; The file distribution manager transmits the downloaded file to the cloud member PCs by referring to the cloud member PC information. The method of claim 7, wherein The member manager, Receiving a data transfer rate information from the cloud member PCs transferring the file to the client, and when the sum of the data transfer rates of each of the cloud member PCs is lower than a reference transfer rate, a portion of the requested file is stored in the storage server. A cloud computing network system for controlling transmission from the client to the client. The method of claim 7, wherein The file distribution manager, And dividing the file downloaded from the storage server into a plurality of data blocks, and transmitting the data blocks to the cloud member PCs, respectively. The method of claim 9, When the sum of data transfer rates of each of the cloud member PCs is lower than a reference transfer rate, the member manager may provide information about a data block provided from a cloud member PC having the slowest data transfer rate among the cloud member PCs. To the client administrator, And the client manager reads the same data block from the storage server as the data block provided by the cloud member PC having the slowest data transfer rate and provides the same to the client. The method of claim 7, wherein The file requested by the client is any one of an application program file, a game program file, a text data file, a document file, a picture file, a music file and a video file.

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