KR20120028751A - Apparatus and method for distributing a content using peer to peer and record media recorded program realizing the same - Google Patents

Apparatus and method for distributing a content using peer to peer and record media recorded program realizing the same Download PDF

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KR20120028751A
KR20120028751A KR1020100090774A KR20100090774A KR20120028751A KR 20120028751 A KR20120028751 A KR 20120028751A KR 1020100090774 A KR1020100090774 A KR 1020100090774A KR 20100090774 A KR20100090774 A KR 20100090774A KR 20120028751 A KR20120028751 A KR 20120028751A
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South Korea
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peer
content
main
spare
program
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KR1020100090774A
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Korean (ko)
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김진환
이정훈
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주식회사 에이프릴세븐
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Priority to KR1020100090774A priority Critical patent/KR20120028751A/en
Publication of KR20120028751A publication Critical patent/KR20120028751A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/104—Peer-to-peer [P2P] networks

Abstract

PURPOSE: A content distribution apparatus using a P2P(Peer to Peer) server and recording medium including a program are provided to effectively form a content distribution network by selecting a main peer and a preliminary peer. CONSTITUTION: A peer selecting unit(210) receives peer information including desired time for the location information of peer, resource information, and content. The peer selecting unit selects a main peer and a preliminary peer according to each time, each location, and each content by using the peer information. A content distribution unit(230) distributes content to the main peer and the preliminary peer.

Description

Apparatus and method for distributing content using peer-to-peer, and a recording medium on which a program for implementing the same is recorded {APPARATUS AND METHOD FOR DISTRIBUTING A CONTENT USING PEER TO PEER AND RECORD MEDIA RECORDED PROGRAM REALIZING THE SAME}

The present invention relates to a content distribution apparatus and method using peer to peer and a recording medium on which a program for implementing the same is recorded.

In a client-server system, a client requests content from a server, and the server provides the requested content to the client.

At this time, the server should respond to requests from a plurality of clients. Therefore, if the number of clients exceeds a certain number, the server is subjected to heavy load. In addition, when the server is subjected to a heavy load, there is a problem in that the response speed is low because the bandwidth allocated to provide content to one client is small.

As part of efforts to reduce the heavy load on the server, a cache scheme and a CDN scheme have been proposed.

There are two types of caching methods: forward proxy and reverse proxy, and the cache server provides the requested content. However, if the cache server is located on the client side, the server operator cannot manage the cache server. If the cache server is located on the server side, the server load can be controlled, but the traffic on the Internet can be reduced. There was a problem that could not be. In order to solve this problem, a CDN has been proposed. CDN operators distribute cache servers under multiple Internet Data Centers (IDCs) or Internet Service Providers (ISPs), and lend cache servers to server operators. The CDN may provide the content from the cache server closest to the client when there is a request for the content from the client. However, in order to construct a CDN, it is expensive to prepare a large number of computers having a capacity equivalent to a server, and even though the functions of the server are replaced by several computers, there is a problem that the number of servers in charge of the CDN function is limited. Therefore, there is a problem that can not provide CDN service in some areas.

Accordingly, an object of the present invention is to provide a content distribution apparatus and method using a peer-to-peer that can form a content distribution network without installing a separate cache server, and a recording medium on which a program for implementing the same is recorded.

In addition, the present invention, when forming a content distribution network for distributing content by peer-to-peer, content distribution device and method using a peer-to-peer that can not interfere with the use of the PC of the peer as much as possible and for implementing the same The purpose is to provide a record carrier on which the program is recorded.

In addition, the present invention is to form a content distribution network for distributing content by peer-to-peer, content distribution apparatus and method using a peer-to-peer that can provide content distribution services throughout the region and a program for implementing the same The purpose is to provide a recorded record carrier.

In addition, the present invention provides a content distribution apparatus and method using a peer-to-peer in the case of forming a content distribution network for distributing content by peer-to-peer in consideration of the region and time zone characteristics of the content is provided, and It is an object of the present invention to provide a recording medium on which a program for realizing this is recorded.

In addition, the present invention, when forming a content distribution network that distributes content by peer-to-peer, content distribution using peer-to-peer that can ensure that a peer functioning as a cache server at any time can be powered on It is an object of the present invention to provide a recording medium on which an apparatus and method and a program for implementing the same are recorded.

In addition, the present invention, when forming a content distribution network for distributing content by peer-to-peer, content distribution apparatus and method using a peer-to-peer that can prevent the distribution of content distributed to the peer illegally And it is an object of the present invention to provide a recording medium in which a program for implementing the same is recorded.

In addition, the present invention provides a content distribution device and method using a peer-to-peer when providing a content distribution network that distributes content by peer-to-peer, so that the content provided by the peer can satisfy the service level agreement, and The purpose is to provide a recording medium having recorded thereon a program for implementation.

Other objects of the present invention will be readily understood through the following description of the embodiments.

In accordance with an aspect of the present invention to achieve the above object is disclosed a content distribution method.

According to a preferred embodiment of the present invention, in a method for distributing content using a peer to peer method in a content distributing device, among a main peer and a spare peer for content Receiving peer information including a time zone for which the location information and the resource information and the content information and the content of the peer desired to be at least one want to operate as at least one of the main peer and the reserve peer; Selecting at least one main peer and a reserve peer by content, region, and time zone using the peer information; And distributing content to the main peer and the spare peer.

Here, the content distribution method further includes providing a copy blocking program to the main peer and the spare peer before the step of distributing content to the main peer and the spare peer, wherein the copy blocking program, the main peer and Installed in the spare peer, and when the main peer or the spare peer is powered on, it monitors the processes processed in the main peer or the spare peer, and copying of files from the main peer or the spare peer proceeds. If it is detected, at least a part of the copied file may be transmitted to the content distribution device.

The distributing content to the main peer and the spare peer may be performed only for the main peer or the spare peer where the copy blocking program is installed.

The copy blocking program may report, to a content distribution device, a time at which the copy blocking program is installed in the main peer or the spare peer at a predetermined period.

The content distribution method may further include determining whether the main peer or spare peer is power-on at a time when it is agreed to operate as the main peer or spare peer; And when the main peer or the spare peer is not powered on at the time when the main peer or the spare peer is agreed to operate as the main peer or the spare peer, the main peer or the remote peer is not powered on. The method may further include powering on a peer or a spare peer.

In addition, the determination of whether the main peer or the spare peer is powered on at the time agreed to operate as the main peer or the spare peer determines whether the time at which the copy blocking program is installed from the main peer or the spare peer is received. It can be done by doing.

The content distribution method may further include generating a redirecting table that matches at least one main peer and a reserve peer by content, region, and time zone; When there is a content request from a client, identifying a main peer in the redirecting table to process the content request; Determining whether content provision by the identified main peer can satisfy a service level agreement (SLA) associated with the requested content; And if it is determined whether the content provision by the identified main peer can satisfy the service level agreement associated with the requested content, and as a result, the content provision by the identified main peer can satisfy the service level agreement. The method may further include redirecting the content request to the main peer.

In addition, as a result of determining whether the content provision by the identified main peer can satisfy the service level agreement associated with the requested content, the content provision by the identified main peer cannot satisfy the service level agreement. In this case, the content request may be redirected to a spare peer matched with the main peer.

According to another aspect of the present invention, a content distribution device is provided.

According to a preferred embodiment of the present invention, in a device for distributing content using a Peer to Peer method, a peer which wants to be at least one of a main peer and a spare peer to the content Receive peer information including location information, resource information, and time zone for a content, including a time zone desired to operate as at least one of a main peer and a reserve peer, and using the peer information, at least one main peer by content, region, and time zone. And a peer selecting unit for selecting a spare peer. And a content distribution unit for distributing content to the main peer and the spare peer.

The content distributing apparatus may further include a program providing unit configured to provide a copy blocking program to the main peer and the spare peer before distributing the content to the main peer and the spare peer, wherein the copy blocking program includes: the main peer and Installed in the spare peer, and when the main peer or the spare peer is powered on, it monitors the processes processed in the main peer or the spare peer, and copying of files from the main peer or the spare peer proceeds. If it is detected, at least a part of the copied file may be transmitted to the content distribution device.

The content distributor may distribute content only to a main peer or a spare peer on which the copy blocking program is installed.

The copy blocking program may report, to a content distribution device, a time at which the copy blocking program is installed in the main peer or the spare peer at a predetermined period.

The content distributing apparatus may further include: a peer monitoring unit determining whether the main peer or the spare peer is power-on at a time when it is agreed to operate as the main peer or the reserve peer; And when the main peer or the spare peer is not powered on at the time when the main peer or the spare peer is agreed to operate as the main peer or the spare peer, the main peer or the remote peer is not powered on. It may further include a peer control unit that powers on the peer or the spare peer.

In addition, the determination of whether the main peer or the spare peer is powered on at the time agreed to operate as the main peer or the spare peer determines whether the time at which the copy blocking program is installed from the main peer or the spare peer is received. It can be done by doing.

The peer selecting unit may generate a redirecting table that matches at least one main peer and a preliminary peer by content, region, and time zone, and the content distributing apparatus may be configured by a client. If there is a content request, the main peer that will process the content request is identified in the redirecting table, and content provision by the identified main peer establishes a Service Level Agreement (SLA) associated with the requested content. Determining whether the content can be satisfied and whether or not the provision of the content by the identified main peer can satisfy the service level agreement associated with the requested content. Direct the content request to the main peer if a level agreement can be satisfied The redirecting unit may further include a redirecting unit.

In addition, the redirecting unit determines that the provision of the content by the identified main peer can satisfy the service level agreement associated with the requested content, and as a result, the provision of the content by the identified main peer is the service level agreement. If not satisfied, the content request may be redirected to a spare peer matched with the main peer.

According to another aspect of the present invention, there is provided a recording medium having recorded thereon a program for implementing a content distribution method.

According to a preferred embodiment of the present invention, in a recording medium in which a program for implementing a method for distributing content using a peer-to-peer method in a content distributing apparatus, a recording medium comprising: Receiving peer information including a time zone that you want to operate as at least one of the main peer and the reserve peer for the location information and resource information and content of the peer that wants to be at least one of the main peer and the reserve peer; Selecting at least one main peer and a reserve peer by content, region, and time zone using the peer information; And distributing content to the main peer and the spare peer, and a recording medium recording a program for implementing the content distribution method.

Here, the content distribution method further includes providing a copy blocking program to the main peer and the spare peer before the step of distributing content to the main peer and the spare peer, wherein the copy blocking program, the main peer and Installed in the spare peer, and when the main peer or the spare peer is powered on, it monitors the processes processed in the main peer or the spare peer, and copying of files from the main peer or the spare peer proceeds. If it is detected, at least a part of the copied file may be transmitted to the content distribution device.

The distributing content to the main peer and the spare peer may be performed only for the main peer or the spare peer where the copy blocking program is installed.

The copy blocking program may report, to a content distribution device, a time at which the copy blocking program is installed in the main peer or the spare peer at a predetermined period.

The content distribution method may further include determining whether the main peer or spare peer is power-on at a time when it is agreed to operate as the main peer or spare peer; And when the main peer or the spare peer is not powered on at the time when the main peer or the spare peer is agreed to operate as the main peer or the spare peer, the main peer or the remote peer is not powered on. The method may further include powering on a peer or a spare peer.

In addition, the determination of whether the main peer or the spare peer is powered on at the time agreed to operate as the main peer or the spare peer determines whether the time at which the copy blocking program is installed from the main peer or the spare peer is received. It can be done by doing.

The content distribution method may further include generating a redirecting table that matches at least one main peer and a reserve peer by content, region, and time zone; When there is a content request from a client, identifying a main peer in the redirecting table to process the content request; Determining whether content provision by the identified main peer can satisfy a service level agreement (SLA) associated with the requested content; And if it is determined whether the content provision by the identified main peer can satisfy the service level agreement associated with the requested content, and as a result, the content provision by the identified main peer can satisfy the service level agreement. The method may further include redirecting the content request to the main peer.

In addition, as a result of determining whether the content provision by the identified main peer can satisfy the service level agreement associated with the requested content, the content provision by the identified main peer cannot satisfy the service level agreement. In this case, the content request may be redirected to a spare peer matched with the main peer.

As described above, according to the content distribution device and method using peer-to-peer according to the present invention, and a recording medium on which a program for implementing the same is recorded, a desired peer is recruited, and a main peer and a spare peer are selected among the desired peers. By distributing content, a content distribution network can be formed without installing a separate cache server. Therefore, there is an advantage that the cost can be minimized in forming a distributed network. In addition, the contract with the content server has an advantage of minimizing the cost of forming a distributed network by paying for the contents provided by the content server for the use of resources of the main peer and the spare peer.

In addition, according to the apparatus and method for distributing content using a peer-to-peer according to the present invention, and a recording medium on which a program for implementing the same is recorded, a time zone in which a desired peer wants to function as a main peer and / or a spare peer is reflected. Therefore, by selecting a main peer and a spare peer, there is an advantage that the content distribution service can be provided in a range that does not disturb the PC use of the main peer and the spare peer as much as possible.

In addition, according to the content distribution apparatus and method using a peer-to-peer according to the present invention and a recording medium on which a program for implementing the same is recorded, a content distribution service is provided throughout the region by selecting a main peer and a reserve peer for each region. The advantage is that you can.

In addition, according to the content distribution apparatus and method using a peer-to-peer according to the present invention and a recording medium on which a program for implementing the same is recorded, the content is provided when forming a content distribution network in which content is distributed by peer-to-peer. There is an advantage that the content can be distributed in consideration of the region and time zone characteristics. In other words, by obtaining information about the subscriber, the region and the number of subscribers for the content from the content server, by adjusting the number of main and reserve peers by region and time zone where the content is provided by reflecting this, There is an advantage that sufficient coping is possible.

In addition, according to the recording medium in which the content distribution apparatus and method using peer-to-peer and the program for implementing the same according to the present invention are recorded, the main peer and / or the spare peer are promised to operate as the main peer and / or the spare peer. If not powered on in one time zone, the main and / or spare peers are promised to act as main and / or spare peers by powering on the main and / or spare peers in a remote control manner. The advantage is that you can power on at one time. Therefore, there is an advantage that the problem that the bandwidth of the distributed network service is not guaranteed in any time zone may not occur.

In addition, according to an apparatus and method for distributing content using a peer-to-peer according to the present invention and a recording medium on which a program for implementing the same is recorded, contents distributed to peers are provided by installing copy blocking programs in a main peer and a spare peer. Can be prevented from being illegally distributed. In addition, there is an advantage that the copy blocking program can be prevented from being deleted or reinstalled after being deleted from the main peer and the spare peers by reporting the time at which the copy blocking program is installed at a predetermined cycle. Therefore, there is an advantage that the illegal distribution of content can be blocked as a source.

In addition, according to the present invention, a content distribution device and method using a peer-to-peer and a recording medium on which a program for implementing the same are recorded, the content server operator and the content distribution device for the content when selecting a peer to respond to the content request. By taking into account the service level agreement set between the operators of the service, the content can be provided in compliance with the service level agreement.

1 illustrates a system to which a content distribution device is applied according to an exemplary embodiment of the present invention.
2 is a functional block diagram of a content distribution device according to an embodiment of the present invention.
FIG. 3 illustrates a redirecting table generated by the peer selecting unit of FIG. 2.
4 is a flowchart illustrating a process of the content distributing apparatus of FIG. 1 for distributing content.
FIG. 5 is a flowchart illustrating a process in which the content distribution apparatus of FIG. 1 processes a request from a client for distributed content.
6 is a flowchart illustrating a process in which the content distribution device of FIG. 1 monitors power-on states of a main peer and a spare peer.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Like reference numerals are used for like elements in describing each drawing. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may exist in between. Should be.

On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, a system to which a content distribution device using a peer-to-peer method according to an exemplary embodiment of the present invention is applied will be described with reference to FIG. 1.

1 illustrates a system to which a content distribution device is applied according to an exemplary embodiment of the present invention.

First, referring to FIG. 1, a system to which a content distribution device of the present invention is applied includes a content server 100, a content distribution device 200, a main peer 310 and 410, a spare peer 320 and 420, and a client 330. , 430, and a communication network 500.

The content server 100, the content distribution apparatus 200, the main peers 310 and 410, the spare peers 320 and 420, and the clients 330 and 430 may be connected to each other through the communication network 500. Here, the communication network 500 may not only include online and mobile communication networks, but also online may include various services existing in the TCP / IP protocol and its upper layers, that is, Hyper Text Transfer Protocol (HTTP), Telnet, and File Transfer Protocol (FTP). , Global open network architectures that provide Domain Name System (DNS), Simple Mail Transfer Protocol (SMTP), Simple Network Management Protocol (SNMP), Network File Service (NFS), and more. The mobile communication network also includes an access gateway that enables transmission and reception of wireless packet data in addition to a base station (BS), a mobile telephone switching office (MTSO), and a home location register (HLR). Components such as a gateway, a packet data serving node (PDSN), and the like may be further included.

The content server 100 may store content provided by a content provider (not shown), and provide the stored content when a content request is requested from a client. However, in the present invention, the content server 100 may not directly provide content by distributing the content to the main peers 310 and 410 and the spare peers 320 and 420 through the content distribution apparatus 200. . To this end, when there is a content request from the clients 330 and 430, the DNS (Domain Name Server) responds with the IP address of the content distribution apparatus 200, whereby the clients 330 and 430 respond to the content distribution apparatus ( The content may be received from the main peers 310 and 410 and the spare peers 320 and 420 through the 200.

The content distribution device 200 may receive content from the content server 100 and distribute the content to the main peers 310 and 410 and the spare peers 320 and 420 by region (region 1 and region 2). When the content request is received from the clients 330 and 430, the content request may be redirected to the main peer 310 or 410 or the spare peer 320 or 420. In FIG. 1, the main peers 310 and 410 and / or the spare peers 320 and 420 are shown to be one for each region. Alternatively, the main peers 310 and 410 and / or the spare peers 320 and 420 are different. Can be more than one per region. In addition, two or more main peers 310 and 410 and / or spare peers 320 and 420 may be provided according to time zones and / or days of the week. In addition, two or more clients 330 and 430 may be provided for each content. Details of the content distribution device 200 will be described below.

The main peers 310 and 410 or the spare peers 320 and 420 may provide content requested by the clients 330 and 430. The main peers 310 and 410 and the spare peers 320 and 420 are selected by content, region, and time zone, and when there is a content request from the clients 330 and 430, the client 330 and 430 requesting the content. The content may be provided according to the location and time zone of the. Here, "region" may mean "physical location" or "sub network" that specifies a location on a peer's network. The subnetwork specifying the location on the network of the main peer 310, 410 or the spare peer 320, 420 can be known from their IP address. To this end, when there is a content request from the client, the content distribution apparatus 200 selects the most suitable main peers 310 and 410 to respond to the request according to the location and time zone of the requesting client, and the main peer ( 310 and 410 may redirect the content request. For example, when the client 330 located in the region 1 makes a content request, the content distribution device 100 may redirect the content request to the main peer 310 located in the region 1. However, the most suitable main peers 310 and 410 to respond to the request cannot satisfy the service level agreement (SLA) between the operator of the content server 100 and the operator of the content distribution apparatus 200. In this case, the content request may be redirected to the spare peers 320 and 420 that match the most suitable main peers 310 and 410 to respond to the request. Here, the main peer for the first content may be a spare peer for the other content. That is, one peer may serve as a main peer and a spare peer. The main peer and the spare peer may receive a price of resource provision from an operator of the content server 100 or an operator of the content distribution apparatus 200. The cost can be paid in proportion to the use of the resource. In addition, the price may be paid in a manner of providing the content provided by the content server 100. Details of the main peers 310 and 410 and the spare peers 320 and 420 will be described below.

Clients 330 and 430 may be any PC that requests content provided by content server 100. The client may receive content from the main peer 310 or 410 or the spare peer 320 or 420 in a peer-to-peer manner.

Hereinafter, the content distributing apparatus of FIG. 1 will be described in detail with reference to FIGS. 1 to 3.

2 is a functional block diagram of a content distribution device according to an embodiment of the present invention. FIG. 3 illustrates a redirecting table generated by the peer selecting unit of FIG. 2.

First, referring to FIG. 2, the content distributing apparatus 200 includes a peer selecting unit 210, a program providing unit 220, a content distributing unit 230, a peer monitoring unit 240, a peer control unit 250, and a redirect. The putting part 260 may be included.

The peer selecting unit 210 may receive peer information from the content server 100 including location information and resource information of a peer (hereinafter, referred to as a “preferred peer”) that wants to be a main peer and / or a spare peer. Here, the location information may be physical location information of the desired peer or a sub-network specifying a location on the network of the desired peer. In addition, the peer selecting unit 210 may receive peer information from the content server 100 including a time period in which the desired peer wants to operate as a main peer and / or a spare peer. To this end, the content server 100 guides with respect to the main peer and the spare peer, and the location information of the desired peer (for example, the IP address of the desired peer or local information indicating the location of the desired peer input by the user, etc.). ) And resource information (eg, computing speed, memory capacity, network bandwidth, etc. of the PC). The guide regarding the main peer and the spare peer may be made at the time of purchasing the content for the content provided by the content server 100. In addition, the content server 100 may collect a time period during which a PC seeking a subscription to the content wants to operate as a main peer and / or a spare peer. This allows the desired peer to be the main peer and / or the reserve peer at the desired time period. Therefore, a user can utilize his PC as a main peer and / or a spare peer as long as the use of the PC is not disturbed. In this case, it is assumed that the desired peer can provide contents in a peer-to-peer manner. In order to enable the desired peer to provide the content in a peer-to-peer manner, the content server 100 may provide software that enables the content to be provided in the peer-to-peer manner to the desired peer. Here, the desired peer may be a buyer of content provided by the content server 100.

Unlike the above, the peer selecting unit 210 may directly recruit the desired peer. That is, the peer selecting unit 210 may directly receive peer information including location information, resource information, time zone, etc. of the desired peer from the desired peer.

In this case, the peer selecting unit 210 may select the main peer and / or the reserve peer using the location information of the desired peer, resource information, and a time zone that is desired to operate as the main peer and / or the reserve peer. In this case, a service level agreement (SLA) concluded in relation to a service of a specific content may be considered between the content server 100 and the operator of the content distribution apparatus 200. Specifically, if the service level agreement concluded in connection with providing the content “A” to the clients 330 and 430 online, the response rate is the network bandwidth at the desired peer closest to the client. This largest desired peer may be selected as the main peer, and then the desired peer having a large network bandwidth may be selected as a spare peer. Here, the main peer and the spare peer may be selected for each time zone. Here, the main peer and the spare peer for each time zone may be at least one. For example, if the provided content is lecture content used by office workers, a larger number of main peers and reserve peers may be selected between 7 pm and 12 pm on weekdays than other time zones. In addition, the main peer and the spare peer may be selected by varying the number of days by reflecting the attributes of the content. At this time, by obtaining information about the subscriber, the region and the number of subscribers for the content from the content server, by adjusting the number of the main peer and the reserve peer by the region and time zone where the content is provided to reflect the expected traffic, It may also be possible to take sufficient action. Here, the peer selecting unit 210 determines the rank of the desired peer suitable for the distribution of the corresponding content by using the service level agreement and the peer information on the content, designates one of them as the main peer and reserves the second rank. Can be specified as a peer. In addition, when designating a plurality of main peers and spare peers, the peer selecting unit 210 may designate a preset higher rank among the ranks of the desired peer as the main peer and designate a next higher rank as the spare peer.

In addition, referring to FIG. 3, the peer selecting unit 210 may generate a redirecting table that matches a main peer and a spare peer by content, region, and time zone. In FIG. 3, “region” may be a “physical location” or a “sub network” that specifies a location on a peer's network. The subnetwork specifying the location on the network of the main peer 310, 410 or the spare peer 320, 420 can be known from their IP address. In FIG. 3, the main peers 1 and 2 and the spare peers 1 and 2 may be information for identifying a storage location of content, for example, a Uniform Resource Locator (URL). Unlike in FIG. 3, a main peer and a spare peer may be selected for each ISP. Considering the synchronization speed, the client preferably receives content from a main peer or a spare peer that subscribes to the same ISP as the ISP to which the client subscribes. At this time, a main peer and a spare peer are selected for each ISP, and if there is a content request from the client, the client subscribes to the ISP, extracts the main peer subscribed to the same ISP as the ISP, and requests the content from the client. You can redirect to the extracted main peer. In addition, the redirection table may be configured in a form of matching the main peer and the reserve peer to at least one of content, ISP, region, and time zone. In this case, the scanning order of each of the contents, ISP, region, and time zone may be arbitrarily selected by the setter. For example, the redirection table may be formed to search for content, region, time zone, and ISP. Or if there is a content request from the client, identifying the content requested by the client, identifying among the main peers corresponding to the content, the main peers subscribed to the same ISP as the ISP to which the client subscribes, and matching the ISP to the main peer. The redirecting table may be formed to select a main peer closest to the client among them. As a result, the client can be provided with the content from the optimal main peer.

Next, referring to FIG. 2, the program provider 220 may provide a copy blocking program to the selected main peer and the spare peer. The copy blocking program may be installed in the main peer and the spare peers to prevent unauthorized copying and distribution of contents stored in the main peer and the spare peers. In detail, the copy blocking program may monitor the processes of the main peer and the spare peer when the main peer and the spare peer are powered on. When the main peer detects that a copy related process is in progress, the copied content may be transmitted to the content distribution apparatus 200. When monitoring the copy protection program, a process monitoring function called PsSetCreateProcessNotifyRoutine can be used among the Driver Development Kit (DDK) functions. In this case, in order to protect the privacy of the main peer and the spare peer, it is preferable that only a part of the copied content is transmitted to the content distribution device 200. In addition, the copy blocking program may be configured at a predetermined period, for example, every minute, at a time when the copy blocking program is installed at the main peer and the spare peer (for example, an operating system (OS) of the main peer and the spare peer is stored in a window). In this case, information such as 'date modified program' may be reported to the content distribution apparatus 200. As a result, the content distribution apparatus 200 may monitor whether the copy blocking program is deleted in order to distribute the content from the main peer and the spare peer without permission. If the copy blocking program is deleted, i.e., the time at which the copy blocking program is installed on the main peer and the spare peer is not reported at a predetermined interval, the content distribution apparatus 200 alerts the corresponding main peer or the spare peer to a preset action, for example, a warning. Send messages, etc. In addition, the program provider 220 may provide the main peer and the spare peer with a program for powering on / off the peer at a time period desired to operate as the main peer and / or the spare peer. When the program is installed on the main peer and the spare peer, power-on can be secured during the time period when it wants to operate as the main peer and / or spare peer, so that the resources used in the content distribution network can be secured constantly. In addition, when the preset time has been exceeded, by being automatically powered off, it is possible to prevent the unauthorized use of its resources in the time zone that the peer does not want. In addition, the program provider 220 may provide a program for providing contents to a selected main peer and a spare peer in a P2P manner. The program may include configuration information such that the main peer and the spare peers are executed only during the time period in which they want to operate as the main peer or the spare peer. Alternatively, the user may set a time zone in which the program wants to operate when the program is installed. Thereby, the resources of the main peer and the spare peer which can be used in the preset time zone can be secured.

The content distributor 230 may determine whether the installation of the copy blocking program is completed in the main peer and the spare peer. In addition, the main peer and / or the spare peer which have been installed may be distributed and stored in the content desired to be stored by the main peer and the spare peer. By distributing the content only to the main peer or the spare peer on which the copy blocking program has been installed, the content distributing unit 230 may prevent the distributed content from being illegally distributed.

The peer monitoring unit 240 may monitor whether the main peer and the spare peer are powered on at a time when the main peer and the spare peer are set to operate as the main peer and the spare peer. At this time, the peer monitoring unit 240 determines whether the main peer and the spare peer are powered on using whether the copy blocking program installed in the main peer and the spare peer is reported to be installed in the main peer and the spare peer. It can be determined.

The peer control unit 250 may access the main peer and / or the spare peer in a remote control manner when the main peer and the spare peer are not powered on in the time period in which the main peer and the spare peer are set to operate as the main peer and the spare peer. You can power it on. For this purpose, a setting for remote control may be made with the consent of the user of the main peer and the spare peer when selecting the main peer and the spare peer.

When there is a request for content from the client, the redirecting unit 260 may redirect the client to the main peer most suitable for the client using the client's IP address or the client's location information transmitted from the client. At this time, the redirecting unit 260, if there is a content request from the client for the distributed content, whether the content provision by the selected main peer can satisfy the service level agreement (SLA) for content provision If the content provision by the main peer can satisfy the service level agreement for the content provision, the content request may be redirected to the main peer. Alternatively, if content provision by the main peer cannot satisfy the service level agreement for the content provision, the content request may be redirected to a spare peer matching the main peer. In this case, when a plurality of main peers and spare peers exist for the requested content in the requested time zone, redirection may be performed by load balancing.

As described above, the present invention can form a content distribution network without installing a separate cache server by recruiting a desired peer, selecting a main peer and a reserve peer among the desired peers, and distributing the content. Therefore, the cost in forming a distributed network can be minimized. In addition, by contracting with a content server, the cost of forming a distributed network can be minimized by paying for the contents provided by the content server for the use of resources of the main peer and the spare peer.

In addition, the present invention may not disturb the use of the PC of the main peer and the spare peer as much as possible by selecting the main peer and the spare peer reflecting the time period that the desired peer wants to function as the main peer and / or the spare peer. Content distribution services can be provided in the scope. Then, the user of the desired peer can earn income by providing resources at a time when his PC is not used. Thus, the user of the desired peer can make the most of the computing resources.

In addition, the present invention can provide a content distribution service throughout the region by selecting the main peer and the reserve peer for each region.

In addition, when forming a content distribution network in which content is distributed by peer-to-peer, the present invention may distribute content in consideration of region and time zone characteristics in which the content is provided. That is, the present invention obtains information about subscribers, subscribers' regions, and the number of corresponding content from the content server, and adjusts the number of main peers and reserve peers according to the region and time zone where the contents are provided by reflecting the information. Sufficient coping may be possible with respect to traffic.

In addition, the present invention provides a remote control method for powering up a main peer and / or a spare peer when the main peer and / or spare peer are not powered on at a time that is promised to operate as the main peer and / or spare peer. By turning on, the main and / or spare peers can be powered on at a time that they have promised to operate as the main and / or spare peers. Therefore, the problem that the bandwidth of the distributed network service is not guaranteed in any time zone may not occur.

Further, according to the present invention, by installing a copy blocking program in the main peer and the spare peer, it is possible to prevent the illegal distribution of the content distributed in the peer. In addition, the copy blocking program may be prevented from being deleted or reinstalled after being deleted from the main peer and the spare peers by reporting the time at which the copy blocking program is installed at a predetermined cycle. Therefore, the illegal distribution of content may be blocked as a source.

In addition, the present invention may be provided in compliance with the service level agreement by considering the service level agreement established between the content server operator and the content distribution device operator for the content when selecting a peer to respond to the content request. have.

Hereinafter, a process of distributing content by the content distributing apparatus of FIG. 1 will be described with reference to FIGS. 1 to 4.

4 is a flowchart illustrating a process of the content distributing apparatus of FIG. 1 for distributing content. In order to clarify the gist of the present invention, the description overlapping with the above description will be omitted or simplified. 4, the configuration of the content distributing device of FIG. 1 may be more clearly defined.

First, the peer selecting unit 210 may receive peer information from the content server 100 (S41). Here, the peer information may include location information and resource information of the desired peer, and information about a time zone and / or day of the week that the user wishes to operate as a main peer and / or a spare peer. In this case, the peer selecting unit 210 may directly receive the peer information from the desired peer.

Next, the peer selecting unit 210 may select the main peer and the reserve peer by content and / or region and / or time zone and / or day of the week using peer information (S52). In this case, the peer selecting unit 210 may select a plurality of main peers and / or reserve peers by referring to regions, time zones, and days of the week for each content.

Next, the program provider 220 may provide a copy blocking program to the selected main peer and the spare peer (S43). As described above, the copy blocking program may be installed in the main peer and the spare peer to prevent illegal copying of contents stored in the main peer and the spare peer. In this case, as described above, the program providing unit 220 may be a program that allows the main peer and the spare peer to be powered on / off in a predetermined time zone, or a program that is executed in a desired time zone to provide content in a P2P manner. May be provided.

Next, the content distribution unit 230 may determine whether the installation of the copy blocking program is completed in the main peer or the spare peer (S44). In this case, in order to confirm whether the installation of the copy blocking program is completed in the main peer or the spare peer, the copy blocking program may be set to provide a message informing the content distribution unit 230 when the copy blocking program is completed. Can be.

Then, as a result of the determination in S44, if the installation of the copy blocking program is not completed in the main peer and the spare peer, the content distribution unit 230 waits until the installation of the copy blocking program is completed in the main peer or the spare peer. Can be (S45).

On the contrary, when it is determined in S44 that the installation of the copy blocking program is completed in the main peer or the spare peer, the content may be distributed to the main peer or the spare peer where the copy blocking program is installed (S46).

Next, the peer selecting unit 210 may generate a redirection table that matches the main and spare peers as shown in FIG. 3 by content, region, and time zone (S47). In this case, as described above, a redirecting table in which the main peer and the spare peer are matched with at least one of content, ISP, region, and time zone may be generated.

As a result, a content distribution network using a peer-to-peer scheme may be formed. At this time, unlike FIG. 3, the peer selecting unit 210 may generate a redirecting table that matches the main peer only by content and by time zone. Unlike step S47, step S47 may be performed after any one of steps S42 to S46.

Hereinafter, a process of processing a request from a client for distributed content by the content distribution device of FIG. 1 will be described with reference to FIGS. 1 to 3 and 5.

FIG. 5 is a flowchart illustrating a process in which the content distribution apparatus of FIG. 1 processes a request from a client for distributed content. In order to clarify the gist of the present invention, the description overlapping with the above description will be omitted or simplified. 5, the configuration of the content distributing device of FIG. 1 may be clearer.

First, the redirecting unit 260 may receive a content request from a client (S51). In this case, the content request from the client may be redirected from the redirecting unit 260 through DNS.

Next, the redirecting unit 260 may identify a main peer to process the content request (S52). In this case, the redirecting table may be used. In detail, the redirecting unit 260 may receive a content request and identify a content, region, and time requested by the client. At this time, to identify the area where the client is located, the IP address of the client may be used. Alternatively, client region information provided by the client may be used to identify the region where the client is located. A separate protocol may be provided for providing and receiving local information of the client. For example, if a content request for content 1 (see FIG. 3) from a client located in area 1 (330 (see FIG. 1)) is in time zone 1 (see FIG. 3), the redirecting unit 260 is a main peer. Main peer 1 (see FIG. 3) can be identified. In addition, the redirecting unit 260 may identify the main peer using an ISP to which the client subscribes.

Then, when the content is provided by the main peer identified in S52, the redirecting unit 260 may determine whether the service level agreement for the content is observed (S53). In this case, a parameter such as bandwidth that may be allocated for providing the content in the main peer may be used.

Next, when the determination in S53 indicates that the content provision by the identified main peer can comply with the service level agreement for the content, the redirecting unit 260 may redirect the content request to the identified main peer. It may be (S54). In this case, the URL of the content stored in the main peer identified to the client may be provided. If there are a plurality of main peers to provide the requested content, load balancing may be performed between the main peers.

On the contrary, when the determination result at S53 indicates that the provision of the content by the identified main peer cannot comply with the service level agreement for the content, the redirecting unit 260 returns the content as a spare peer matched to the identified main peer. The request may be redirected (S55). For example, if the main peer 1 (see FIG. 3) cannot satisfy the service level agreement, the content request may be redirected to the spare peer 1 (see FIG. 3).

As a result, the client requesting the content may receive the content from a peer close to the client within a range of complying with the service level agreement.

1 to 3 and 6, a process of monitoring the power-on state of the main peer and the spare peer by the content distribution device of FIG. 1 will be described.

6 is a flowchart illustrating a process in which the content distribution device of FIG. 1 monitors power-on states of a main peer and a spare peer. In order to clarify the gist of the present invention, the description overlapping with the above description will be omitted or simplified. 6, the configuration of the content distributing device of FIG. 1 may be clearer.

First of all, the peer monitoring unit 240 may monitor whether the main peer or the reserve peer is powered on at a time period in which the main peer or the reserve peer is set to operate as the main peer or the reserve peer (S61). At this time, the peer monitoring unit 240 determines whether the main peer and the spare peer are powered on using whether the copy blocking program installed in the main peer and the spare peer is reported to be installed in the main peer and the spare peer. It can be determined. In this case, the peer monitoring unit 240 may check whether or not the preset periodic power-on is performed between 5 minutes before and after a time period in which the main peer or the reserve peer is set to operate as the main peer or the reserve peer.

Then, as a result of the determination in S61, if the main peer or the spare peer is not powered on in the time zone set to operate as the main peer or the spare peer, the peer control unit 250 remotely controls the main peer and / or the spare. The peer may be powered on (S62).

In this way, the main peer or the spare peer can be guaranteed to be powered on at a time period set to operate as the main peer or the spare peer.

The process of FIGS. 4 to 6 may be performed as a part of each, or the processes of FIGS. 4 to 6 may be performed in combination with each other.

Meanwhile, the content distribution method using peer-to-peer according to the present invention may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.). .

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

100: content server
200: content distribution device 210: peer selection unit
220: program provider 230: content distribution unit
240: peer monitoring unit 250: peer control unit
260: redirecting unit
310, 410: main peer 320, 420: spare peer
330, 430: Client
500: communication network

Claims (17)

In a method for distributing content using a peer to peer method in a content distributing device,
Receive peer information including location information and resource information of a peer who wants to be at least one of a main peer and a reserve peer with respect to the content, and a peer information including a time period that is desired to operate as at least one of the main peer and the reserve peer with respect to the content. Doing;
Selecting at least one main peer and a reserve peer by content, region, and time zone using the peer information; And
And distributing content to the main peer and the spare peer.
The method of claim 1,
Before distributing content to the main and spare peers,
Providing a copy protection program to the main peer and the spare peer;
The copy blocking program,
Installed in the main peer and the spare peer,
Monitoring the process being processed at the main peer or the spare peer when the main peer or the spare peer is powered on,
And if it is detected that a copy of the file is in progress in the main peer or the spare peer, transmitting at least a part of the copied file to a content distribution device.
The method of claim 2,
Distributing content to the main peer and the spare peer,
Content distribution method characterized in that is performed only for the main peer or the reserve peer that the installation of the copy protection program is completed.
The method of claim 2,
The copy blocking program,
The content distribution method, characterized in that the copy protection program reports the time installed in the main peer or the reserve peer to the content distribution device at a predetermined interval.
The method of claim 4, wherein
Determining whether the main peer or spare peer is power-on at a time agreed upon to operate as a main peer or spare peer; And
As a result of determining whether the main peer or the spare peer is powered on in a time period agreed to operate as the main peer or the spare peer, if the main peer or the spare peer is not powered on, the main peer by remote control Or powering on the spare peer.
The method of claim 5, wherein
The determination of whether the main peer or the spare peer is powered on during the time period agreed to operate as the main peer or the spare peer,
And determining whether the time at which the copy blocking program is installed is received from the main peer or the spare peer.
The method of claim 1,
Generating a redirecting table matching at least one main peer and a spare peer by content, region, and time zone;
When there is a content request from a client, identifying a main peer in the redirecting table to process the content request;
Determining whether content provision by the identified main peer can satisfy a service level agreement (SLA) associated with the requested content; And
As a result of determining whether the provision of the content by the identified main peer can satisfy the service level agreement associated with the requested content, if the provision of the content by the identified main peer can satisfy the service level agreement,
Redirecting the content request to the main peer.
The method of claim 7, wherein
If it is determined whether the content provision by the identified main peer can satisfy the service level agreement associated with the requested content, and as a result, the content provision by the identified main peer cannot satisfy the service level agreement,
Redirecting the content request to a spare peer matched to the main peer.
In the device to distribute the content using a peer to peer (Peer to Peer) method,
Receive peer information including location information and resource information of a peer who wants to be at least one of a main peer and a reserve peer with respect to the content, and a peer information including a time period that is desired to operate as at least one of the main peer and the reserve peer with respect to the content. A peer selecting unit configured to select at least one main peer and a reserve peer by content, region, and time zone by using the peer information; And
And a content distributor configured to distribute content to the main peer and the spare peer.
The method of claim 9,
A program providing unit which provides a copy blocking program to the main peer and the spare peer before distributing content to the main peer and the spare peer,
The copy blocking program,
Installed in the main peer and the spare peer,
Monitoring the process being processed at the main peer or the spare peer when the main peer or the spare peer is powered on,
And if it is detected that the copy of the file is in progress at the main peer or the spare peer, transmitting at least a part of the copied file to a content distribution device.
The method of claim 10,
The content distribution unit,
And distributing the content only to a main peer or a spare peer on which the copy protection program is installed.
The method of claim 10,
The copy blocking program,
The content distribution device according to claim 1, wherein the copy blocking program reports the time installed in the main peer or the spare peer to the content distribution device at a predetermined period.
The method of claim 12,
A peer monitoring unit that determines whether the main peer or the spare peer is powered on at a time when it is agreed to operate as the main peer or the spare peer; And
As a result of determining whether the main peer or the spare peer is powered on in a time period agreed to operate as the main peer or the spare peer, if the main peer or the spare peer is not powered on, the main peer by remote control Or a peer controller for powering on the spare peer.
The method of claim 13,
The determination of whether the main peer or the spare peer is powered on during the time period agreed to operate as the main peer or the spare peer,
And determining whether the time at which the copy blocking program is installed is received from the main peer or the spare peer.
The method of claim 9,
The peer selection unit,
Create a redirecting table that matches at least one main peer and a spare peer by content, region, and time zone,
The content distribution device,
When there is a content request from a client, the main peer to process the content request is identified in the redirecting table, and the provision of content by the identified main peer is related to the requested content. Service level agreement), and determining whether the provision of content by the identified main peer can satisfy a service level agreement associated with the requested content. And a content redirecting unit for redirecting the content request to the main peer if content provision can satisfy the service level agreement.
The method of claim 15,
The redirecting unit,
If it is determined whether the content provision by the identified main peer can satisfy the service level agreement associated with the requested content, and as a result, the content provision by the identified main peer cannot satisfy the service level agreement, And redirecting the content request to a spare peer matched with the main peer.
In a recording medium having a program recorded thereon for implementing a method of distributing content using a peer to peer method in a content distributing device,
Receive peer information including location information and resource information of a peer who wants to be at least one of a main peer and a reserve peer with respect to the content, and a peer information including a time period that is desired to operate as at least one of the main peer and the reserve peer with respect to the content. Doing;
Selecting at least one main peer and a reserve peer by content, region, and time zone using the peer information; And
And distributing content to the main peer and the spare peer.
KR1020100090774A 2010-09-15 2010-09-15 Apparatus and method for distributing a content using peer to peer and record media recorded program realizing the same KR20120028751A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200115676A (en) * 2012-12-11 2020-10-07 마이크로소프트 테크놀로지 라이센싱, 엘엘씨 Improving peer-to-peer performance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200115676A (en) * 2012-12-11 2020-10-07 마이크로소프트 테크놀로지 라이센싱, 엘엘씨 Improving peer-to-peer performance

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