KR20050013519A - System of Data Distribution and Acquisition and Method of Data Distribution and Acquisition - Google Patents

Abstract

The present invention relates to a system for distributing and acquiring data and a method for distributing and acquiring data in which a plurality of users can efficiently acquire content or media data by distributing content or media data to a plurality of nodes. A plurality of nodes connected to and having a storage medium capable of storing data; A management unit connected to the nodes via a wired / wireless communication network, managing distribution information of data distributed to the nodes, and generating acquisition information; At least one receiving client for downloading or executing data; The management unit stores data in a predetermined number of nodes of the plurality of nodes, and the receiving client inquires and receives acquisition information of necessary data stored in the node from the management unit by using a peer-to-peer method. And acquiring data from the node where the data is stored. This allows a large number of users to acquire data of media or content at a stable and fast pace, and the providers of media or content can sell or provide data to consumers while protecting their media or content. Distribution and acquisition system and methods of distribution and acquisition of data are provided.

Description

System of Data Distribution and Acquisition and Method of Data Distribution and Acquisition

The present invention relates to a data distribution and acquisition system, and more particularly, to a data distribution and acquisition system capable of distributing provided data to a plurality of nodes and acquiring the distributed data into a P2P system.

In general, there are server / client systems, pure P2P systems, and hybrid P2P systems as content or media transmission or streaming methods. The server / client method refers to a method in which a producer of content or media data stores data in a server, and clients of data consumers access the server to obtain content or media data.

However, when the traffic increases, the server / client system needs to expand the server and the network to cope with the increased traffic. Accordingly, there is a problem in that the expansion of the server takes a huge cost and time, it is not possible to flexibly respond to the request of the consumer. In addition, there is a problem that it is difficult to set the optimized capacity of the server in determining the capacity of the server. For example, if the server is set to the maximum demand, the capacity of the server remains beyond what is required, except when the customer's request reaches its peak. At the peak, there is a problem that it is difficult to efficiently operate the server because data is not obtained smoothly. In addition, when a large number of clients are connected at one time, it takes a long time to acquire data.

Pure P2P system refers to a system that does not have a central server and transmits data directly between nodes. Here, nodes refer to individual peers. Gnutella is used as such a P2P system. Each node in a pure P2P system is both a source of data and a consumer. In such a pure P2P system, when a node wants to know the existence of another node that has the desired data, it queries and receives the node that it can reach, and the nodes that have been queried again query the nodes that it can reach. Use the type of broadcast you receive. Therefore, the node that threw the first query checks the existence of the node having the data of its own through this query / answer, and directly connects with the node to obtain the desired data.

However, such a pure P2P system has a disadvantage in that the speed of the system is slowed down as the number of members of the system increases exponentially the questions and responses of the broadcast form distributed between nodes. In addition, there is a problem that the data of the creator of the content or media data can be obtained without permission, which is vulnerable to data protection. In addition, in the provision of content or media data, since the number of nodes storing the data is small in the initial stage and many nodes access to acquire data, data transmission is difficult.

The hybrid P2P system has a central server, and nodes connect to the server, and each node registers data information of its contents or media with the central server. In this case, each node is both a supplier and a consumer of data. When a node wants the data it needs, it sends a query to a central server, receives information on which node has the data it needs, and directly accesses the node to obtain content or media data.

However, such a hybrid P2P system, like a pure P2P system, has a problem in that it is vulnerable to data protection because it can download or stream data of a creator of content or media data without permission. In addition, in the provision of content or media data, since the number of nodes storing the data is small in the initial stage and many nodes access to acquire data, there is a problem in that data transmission is difficult.

Therefore, an object of the present invention is to solve such a conventional problem, the data acquisition system that can respond elastically to the request of the consumer, as it does not take the cost and time to increase the server when more consumers want data And a method for distributing and acquiring data.

Another object of the present invention is to provide a data acquisition system and a method of distributing and acquiring data, which take less time to acquire data when many clients are connected at once.

Still another object of the present invention is to provide a data acquisition system and a method of distributing and acquiring data in which the speed of the system does not slow down even if the number of nodes of the system is increased.

In addition, another object of the present invention is to provide a data acquisition system and a method for distributing and acquiring data that can easily protect the data by preventing unauthorized acquisition of data of the creator of the content or media data.

It is still another object of the present invention to provide a data acquisition system and a method for distributing and acquiring data, in which data is easily transmitted even at an initial stage in providing content or media data.

1 is a block diagram showing a system for distributing and acquiring data according to a first embodiment of the present invention;

2 is a block diagram showing a configuration of a node of a data distribution and acquisition system according to a first embodiment of the present invention;

3 is a block diagram showing a system for distributing data in a system for distributing and acquiring data according to a first embodiment of the present invention;

4 is a configuration diagram showing a system for acquiring data in a data distribution and acquisition system according to a first embodiment of the present invention;

5 is a block diagram showing a system for managing data from management information in a data distribution and acquisition system according to a first embodiment of the present invention;

6 is a block diagram showing a system for distributing and acquiring data according to a second embodiment of the present invention;

7 is a block diagram showing a data distribution system in a data distribution and acquisition system according to a second embodiment of the present invention;

8 is a flowchart illustrating a flow of a method of distributing and acquiring data according to the present invention.

♣ Explanation of symbols for the main parts of the drawing

1: node 2: administration

3: receiving client 4: supply

21: Local management department

According to the present invention, there is provided a system for distributing and acquiring data, comprising: a plurality of nodes connected to a wired / wireless communication network and having a storage medium capable of storing data; A management unit connected to the nodes through a wired or wireless communication network, managing distribution information of the nodes, and generating acquisition information; At least one receiving client for downloading or executing data; The management unit distributes data to a predetermined number of nodes among the plurality of nodes, and the receiving client inquires and receives acquisition information of necessary data distributed to the node from the management unit by using a peer-to-peer method. A data distribution and acquisition system is characterized by acquiring data from a node in which the data is stored.

Here, the node includes a system resource and a node manager, wherein the system resource is a data storage medium, a central processing unit, a memory, and a network configuration.

The management unit stores the data redundantly in a predetermined number of nodes, divides the data into predetermined portions, stores the data in a predetermined number of nodes, or divides the data into predetermined portions, and stores the data in a predetermined number of nodes. It may be.

On the other hand, the plurality of nodes are divided into a specific number of nodes under a predetermined condition, and the management unit includes local management units for managing distribution information of the divided node computers, and a central management unit for managing the local management units. It is desirable to be able to manage a large number of nodes smoothly.

The management unit receives management information from the node, and determines whether one of additional storage, deletion, and change of a storage location of the data stored in the node is determined from the management information, and then the management client receives the management information from the node. It is desirable to further distribute the data to additional node computers, to delete the data stored in the predetermined node computer, or to change the storage location of the data to optimize and manage the data.

The apparatus further includes a supply unit for supplying data, wherein the receiving client is installed in a computer selected to access the supply unit to acquire data, and the P2P (Peer) is inquired and received from the management unit. The data may be obtained from a node in which the data is stored using a to Peer) method.

On the other hand, the above object is, according to another aspect of the present invention, a data acquisition method, comprising: preparing a plurality of nodes capable of storing data, and preparing a management unit for managing data stored in the node; A data distribution request step of distributing data; A distribution step of distributing the data requested to be distributed to a predetermined number of nodes among the plurality of nodes, storing distribution information of the node to which the data is distributed, and generating acquisition information; And an acquiring step of querying and receiving the acquiring information of the data stored in the node and acquiring the data from the node in which the data is stored by using a peer to peer (P2P) method. Is also achieved.

Meanwhile, in the distributing step, the management unit stores the data redundantly in a predetermined number of nodes, divides the data into predetermined portions, stores the data in at least a predetermined number of nodes, or divides the data into predetermined portions. It may be stored in duplicate in the number of nodes.

Meanwhile, after the obtaining step, management information is received from the node, and any one of additional distribution, deletion, and change of the distribution position of the data distributed to the node is determined to be added to an additional node other than the predetermined node. It is preferable to further optimize and manage the data by further distributing the data, deleting the data distributed to the predetermined node computer, or changing the distribution location of the data.

On the other hand, the preparation step is an application step for receiving a node that can distribute data; It may also include a registration step of registering the applied node.

Prior to the description, in the various embodiments, components having the same configuration will be representatively described in the first embodiment using the same reference numerals, and in other embodiments, different configurations from the first embodiment will be described. do.

Hereinafter, a system for distributing and acquiring data according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a data acquisition system according to a first embodiment of the present invention. As shown in the figure, the data acquisition system is connected to a wired / wireless communication network, and a plurality of nodes 1 having a distribution medium capable of distributing data, and the nodes 1 are connected to each other through a wired / wireless communication network. And a management unit 2 for managing the acquisition information of (1) and at least one receiving client 3 for downloading or executing data.

2 is a block diagram showing the configuration of a node of the data distribution and acquisition system according to the present invention. As shown in the figure, the node 1 includes a system resource 10 and a node manager 16 that manages the system resource 10. The system resource 10 includes a storage medium 11 capable of storing data, a central processing unit 12, a network configuration 13, a memory 14, and the like. The node manager 16 manages the system resources 10 according to various commands transmitted from the manager 2 and performs a command to the manager 2.

Here, the node 1 may be a personal computer having a hard disk which is generally a storage medium, and may be any other storage medium that can be connected to a wired / wireless communication network. That is, when the predetermined portion of the hard disk of the personal computer used in the general home is registered in the management unit 2, the node manager 16 is driven in the personal computer, and the predetermined portion of the hard disk stores data storage space. It is utilized. In order to register as the node 1, a registration application is made to the management unit 2, and if it is authenticated after the registration application, it can be utilized as the node 1. Node 1 in the present invention is such that the node is both a provider of data and a consumer.

Unlike the case of the conventional P2P system, it serves only as a provider of data.

3 is a block diagram showing a data distribution system in a data distribution and acquisition system according to a first embodiment of the present invention. As shown in the figure, the management unit 2 distributes data information of the provided content or media to each node 1, and manages distribution information of data distributed to the nodes 1. Here, the distribution means that the management unit 2 stores data in the plurality of nodes 1. In addition, the distribution information may be a list of data stored in the node 1, the location of the node where the data is stored, the order of data transmission, and general information about the node (internet speed, disk capacity) and the like. Unlike the case of the conventional client / server system, the management unit of the present invention serves to store data in each node without storing the data in the management unit.

Therefore, in distributing the data, the management unit can determine whether the data is illegal or not, and unlike the conventional P2P system, it can prevent illegal data from being disclosed to the public in advance, thereby protecting the data. There is an advantage that it becomes easy.

On the other hand, the number of nodes 1 for storing data may be adjusted by estimating the demand of data of content or media. One data may be stored in only one node 1, and one data may be stored in multiple nodes 1 in duplicate. In addition, one data may be divided into several parts and distributed and stored in the plurality of nodes 1, and one data may be repeatedly distributed and stored. If the data are distributed and stored in the multiple nodes 1, information about down or streaming order according to the distributed storage of the data is stored in the management unit 2. Therefore, since the management unit 2 can predict the demand of data in advance and store it in the node 1, unlike the existing pure P2P system or hybrid P2P system, it is possible to prevent the bottleneck that occurs during the initial acquisition of the data. Can be.

4 is a block diagram showing a system for acquiring data in a data distribution and acquisition system according to a first embodiment of the present invention. As shown in the figure, when the reception client 3 inquires the management unit 2 of the acquisition information for the data desired by the reception client 3, the management unit 2 generates the acquisition information and provides it to the reception client 3. The receiving client 3 provided with the acquisition information directly accesses the nodes 1 and acquires data in a P2P manner.

Here, the acquisition means that the receiving client transmits or downloads or streams data desired by the client to the node. Acquisition information refers to the address, data state, data transmission order, etc. of the node that the receiving client can receive or stream data under optimal conditions. The acquisition information is generated by the management unit 2 from distribution information and management information to be described later. It is delivered to the receiving client 3.

Therefore, in order to acquire data, it must be through the management unit 2, unlike the conventional P2P system, it is possible to prevent the receiving client 3 from acquiring data by the management unit 2 without permission, and use of the data. In addition, it is easy to charge for implementation, and the information of the receiving client 3 that has obtained the data can be grasped, so that the intellectual property of the data producer's data can be easily protected.

Here, when the data is distributed and stored in the various nodes 1, the data may be sequentially obtained according to the transmission order of the data included in the acquisition information. In addition, instead of sequentially acquiring data, a plurality of distributed data may be simultaneously acquired and recombined into one data.

5 is a block diagram showing a system in which the management unit updates the operating strategy of the system in the data distribution and acquisition system according to the first embodiment of the present invention. As shown in the figure, after the above-described data transmission is performed several times, the management unit 2 determines the number of times that the receiving client 3 inquires and receives the data from the management unit 2, and the receiving client 3 makes a predetermined request. The management strategies such as the number of times data is acquired from the node 1 and errors in data acquisition are updated, such as whether to store additional data, delete data, and change the storage location. That is, in case of data that has many requests or is expected to be requested from the receiving client 3, the data is stored in the additional node 1 in addition to the node 1 in which the existing data is stored to meet the demands or requests of many receiving clients. By securing a node of the appropriate size to secure the storage space of the data, the receiving client (3) is able to obtain the data more efficiently and efficiently at a more stable and high speed with the quality that meets their expectations. On the other hand, the management information may be a service success rate, such as the service success rate, the service success rate, the average resource utilization of the node, the error of data reception and the list of popular data, of course.

In addition, in the case of data with a small number of requests from the receiving client 3, if there are unnecessarily many nodes 1 stored in comparison with the request, another node 1 other than the appropriate node 1 among the nodes 1 in which the data is stored is required. By deleting the data stored in the node, the node resource can be used efficiently.

And, when there are many requests for specific data from the receiving client 3 in a certain region locally, the management unit 2 adds and stores the data in the node 1 of the region, and the data stored in the node 1 of another region. Deleting the data may be redistributed to optimize response time and transmission rate according to the local characteristics of the receiving clients 3.

Next, a data distribution and acquisition system according to a second embodiment of the present invention will be described. 6 is a block diagram showing the configuration of a data distribution and acquisition system according to a second embodiment of the present invention. In the second embodiment of the present invention, the management unit includes a central management unit 2 and a local management unit 21. That is, according to the regional characteristics of the node 1, a local manager 21 for managing the nodes 1 in the same area and a central manager 2 for managing the local managers 21 are provided. Here, the receiving clients 3 access the local management unit 21 that manages their area, and inquire and receive data acquisition information to obtain necessary data from the node 1. Therefore, compared to the case where the receiving client 3 directly connects to the central management unit 2, by providing the local management unit 21, the number of paths such as a router through which the receiving client 3 passes is reduced, resulting in a faster response speed. As a result, the transmission rate is increased, so that more stable and faster data acquisition can be achieved. In addition, all the receiving client (3) is not driven to the central management unit 2, the load on the central management unit 2 does not take much load, the capacity of the overall system is increased, the processing speed of the central management unit 2 is faster have.

Next, a data distribution and acquisition system according to a third embodiment of the present invention will be described. 7 is a block diagram showing the configuration of a data distribution and acquisition system according to a third embodiment of the present invention. As shown in the figure, the third embodiment of the present invention is a data distribution and acquisition system in the case where a data supply section exists. That is, there is a supply unit 4 for distributing data of the content or media, the supply unit 4 distributing data to the management unit 2, and the management unit 2 is similar to each node 1 as in the first embodiment. Distribute the data to

Here, when the consumer 3 of the data selects the home page of the supply unit 4 or the data to be obtained by connecting to the server, the module of the receiving client 3 is operated in the computer of the receiver, and the receiving client 3 is The homepage of the supply unit 4 is connected to the management unit 2. The management unit 2 provides the acquisition client 3 with the acquisition information that the reception client 3 can acquire data the fastest, and the reception client 3 connects to the node 1 from the acquired acquisition information and is required. Acquire data.

Thus, although the user 3 has the same interface as acquiring data through the homepage of the supplier 4, in practice, the receiving cleat 3 is activated and the data from the node 1 in which the necessary data is stored in a P2P manner is stored. To obtain.

Meanwhile, in the above description, the manager 2 and the node 1 have been described as separate, but the manager 2 and the node 1 may exist in one computer. In addition, although the node 1 and the receiving client 3 have been described as separate, the node 1 and the receiving client 3 may exist in one computer.

Next, as another feature of the present invention, a method of distributing and acquiring data will be described.

8 is a flowchart illustrating a flow of a method of distributing and acquiring data according to the present invention. As shown in the figure, a plurality of nodes capable of storing data, a preparation step (S1) for preparing a management unit for managing data stored in the node, a data distribution request step (S2) for providing data, and received A distribution step of storing data in a predetermined number of nodes among the plurality of nodes and storing acquisition information of the data stored in the node, and inquiring and receiving the acquisition information of the data stored in the node by receiving the P2P (Peer). It acquires the data from the node in which the data is stored by using a Peer method (S4). Here, the node and the management unit are the same as those of the above-described data distribution and acquisition system, and thus detailed description thereof will be omitted.

In the preparation step S1, a plurality of nodes are registered and a management unit for managing the nodes is prepared. In the preparation stage, a node manager is installed on a computer used as a node, and its system resources are prepared to be utilized as nodes. On the other hand, the preparation step (S1) may include an application step and a registration step, in the application step to the node registration application to the management unit, in the registration step is registered as a node from the management unit after registration application. Through this step, the node manager is installed in the own computer, and system resources such as a storage medium of the predetermined capacity of the own computer are used as a component of the node.

The data distribution request step (S2) is a step of distributing the content or media data to the management unit. In the data distribution request step (S2), the supplier having ownership of the data of the content or the media requests the management unit to store the data produced by the node in the nodes.

In the distribution step S3, the data requested for distribution in the supplying step is stored in a predetermined node among several nodes, and the distribution information is stored in the management unit. The distribution information is the same as the distribution and acquisition system of the data described above. In addition, in distributing data to the node in the distribution step (S3), one data may be stored only in one node, and one data may be duplicated and stored in a plurality of nodes. In addition, one data may be divided into several parts and distributed and stored in a plurality of nodes, and one data may be distributed and stored in duplicate. Therefore, since the management unit can predict the data demand in advance and store it in the node, unlike the case of the existing pure P2P system or hybrid P2P system, it is possible to prevent the bottleneck that occurs during the initial distribution of the data.

In the acquiring step (S5), the receiving client inquires the management unit of the acquisition information about the data necessary for the receiving client, and the management unit provides the acquisition information of the data inquired from the receiving client. The receiving client acquires data in a P2P manner from a node storing data desired by the receiver based on the acquisition information provided from the management unit. If data is distributed and stored in multiple nodes, the data may be sequentially obtained according to the transmission order of the data included in the acquisition information. In addition, instead of sequentially acquiring data, multiple distributed data may be simultaneously acquired and summed back into one data.

On the other hand, after the acquisition step (S5) receives the management information of at least one of the number of times of querying and receiving data, the number of times of receiving data from a predetermined node, and the information on the error of data reception, and the data stored in the node Determine whether to further store, delete, or change the storage location of the data to further store data in additional nodes other than the predetermined node, delete data stored in the predetermined node computer, or store the data in It may further include a modification step (S6) to change the. In the modification step (S6), after the data transmission is made several times, it is possible to determine the degree of request of the data, there is an advantage that can be efficiently stored and managed data. That is, in case of data that has many requests or is expected to be requested from the receiving client, the data is stored in additional nodes in addition to the node where the existing data is stored, so that it is appropriate to secure the storage space of the data in response to the demand or request of many receiving clients. By ensuring the size of the node, the receiving client can obtain data more efficiently and efficiently with a quality that meets their expectations.

In this case, the management information may be a service success rate, a service success rate such as a service request number, an average resource utilization rate of a node, a data reception error, a list of popular data, and the like.

Through these steps, the receiving client can easily acquire the data without the bottleneck that may occur during the initial distribution of the data, and the suppliers of the data can distribute and acquire the data that can be supplied to consumers while protecting their data. This may be provided.

As described above, according to the present invention, when the number of consumers who want data increases, it is not necessary to add cost and time to server expansion, and the data acquisition system and method of distributing and acquiring data can flexibly respond to the requests of consumers. This is provided.

According to the present invention, there is provided a data acquisition system and a method for distributing and acquiring data, which take less time to acquire data when many clients connect at once.

In addition, the present invention provides a data acquisition system and a method of distributing and acquiring data that do not slow down the system even if the number of nodes of the system is increased, and easily protects the data by preventing unauthorized acquisition of the data of the creator of the content or media data. Provided are a data acquisition system and a method for distributing and acquiring data.

According to the present invention, in the provision of content or media data, there is provided a system for distributing and acquiring data, and a method for distributing and acquiring data, in which data is easily transmitted even at an early stage.

Claims (14)

In the distribution and acquisition system of data, A plurality of nodes connected to a wired / wireless communication network and having a storage medium capable of storing data; A management unit connected to the nodes through a wired or wireless communication network, managing distribution information of the nodes, and generating acquisition information; At least one receiving client for obtaining data; The management unit stores data in a predetermined number of nodes of the plurality of nodes, and the receiving client inquires and receives acquisition information of necessary data stored in the node from the management unit by using a peer-to-peer method. A system for distributing and acquiring data, wherein the data is obtained from a node in which the data is stored. The method of claim 1, The node includes a system manager and a node manager for managing the system resource, wherein the system resource is a data storage medium, a central processing unit, a memory, and a network configuration. The method of claim 1, And the management unit stores the data redundantly in a predetermined number of nodes. The method of claim 1, And the management unit divides the data into predetermined portions and stores the data in a predetermined number of nodes. The method of claim 1, And the management unit divides the data into predetermined portions and stores the data redundantly in a predetermined number of nodes. The method according to any one of claims 1 to 5, The plurality of nodes are divided into a specific number of nodes under a predetermined condition, and the management unit includes local management units for managing location information and data list of the divided node computers, and a central management unit for managing the local management units. Distribution and acquisition system of data, characterized in that. The method of claim 6, The management unit receives management information from the nodes, and determines from the management information whether to further store, delete or change the storage location of the data stored in the node, and to add additional nodes other than the predetermined node computer. And further storing data in the computer, deleting the data stored in the predetermined node computer, or changing the storage location of the data. The method of claim 7, wherein And a supply unit for supplying data, wherein the receiving client is installed in a computer selected to download or execute data by accessing the supply unit, and inquires and receives information necessary for data stored in a node from the management unit. and a data distribution and acquiring data from a node in which the data is stored by using a Peer method. In the method of obtaining data, A preparation step of preparing a plurality of nodes capable of storing data and a management unit managing data stored in the nodes; A data supply step of providing data; A distribution step of the management unit storing the supplied data in a predetermined number of nodes among the plurality of nodes, storing distribution information of the node in which the data is stored, and generating acquisition information; And obtaining the data from the node in which the data is stored by using a peer to peer (P2P) method by inquiring and receiving the acquisition information of the data stored in the node using a peer to peer (P2P) method. Way. The method of claim 9, And in the distribution step, the management unit stores the data in duplicates in a predetermined number of nodes. The method of claim 9, And in the distribution step, the management unit divides the data into predetermined portions and stores the data in a predetermined number of nodes. The method of claim 9, And in the distribution step, the management unit divides the data into predetermined portions and stores the data in duplicates in a predetermined number of nodes. The method of claim 9 or 12, Receiving management information from the node after the acquiring step, and determining any one of additional storage, deletion, and change of storage location of the data stored in the node to add data to additional nodes other than the predetermined node. And a modification step of storing, deleting data stored in the predetermined node computer, or changing a storage location of the data. The method of claim 13, The preparation step includes an application step for receiving a node capable of storing data; And a registration step of registering the applied node.