KR20040073630A - System and method for sharing content among CDNSPs - Google Patents

Abstract

PURPOSE: A system and a method for sharing contents between the CDN(Content Delivery Network) service providers are provided to make the CDN service provider offer the contents, which is currently serviced on the CDN, to other CDN by connecting the CDN service providers. CONSTITUTION: A multi-CDN manager(210) controls the registration/distribution/service of the contents shared with the CDN service providers(241-243) and receives a process situation from the CDN service provided. A core system(220) stores the related information to the shared contents if the CDN service provider requests the contents share through the multi-CDN manager, processes/provides a signal for controlling the registration/distribution/service of the shared contents output from the multi-CDN manager, and transfers the process situation received from the CDN service provider to the multi-CDN manager. Multi-CDN interfaces(231-233) match each CDN service provider with the multi-CDN manager and the core system.

Description

System and method for sharing content among CDN service providers {System and method for sharing content among CDNSPs}

The present invention relates to a system and a method for sharing content among a plurality of content delivery network (CDN) service providers that provide CDN services using different mechanisms. More particularly, the present invention relates to content serviced in an arbitrary CDN network. The present invention relates to a content sharing system and method among CDN service providers to be serviced in another CDN network.

The international network that forms the interworking of several local area networks (LAN) and wide area networks (WAN) around the world is called the Internet. The Internet can be infinitely extended by interworking through communication media, and supports the smooth exchange of information by connecting networks with each other. In recent years, subscriber networks between network operators and ISPs called Internet Service Providers (ISPs) have been replaced by asymmetrical or symmetrical digital lines. As the bandwidth available to users expands, the demand for large-capacity content explodes. Doing. In other words, as communication networks and services are developed, demand for more and more content services is increasing, and more content services require further advancement of communication networks. A content user who wants to receive a content service accesses a content server provided by a content provider and downloads desired content. In this case, as the content moves between ISP networks, the network is overloaded and bottlenecks occur, which causes delays or frequent disconnections.

In order to solve the problems of the related art, a content delivery network (CDN) service has recently been proposed. This CDN service saves the contents of the web server of the content provider (CP) to several edge servers (stratefully installed in several ISPs) and optimally located near the user when there is a demand for content from internet users. It is a large data transmission service that delivers contents to the user from CDN Edge Server.

1 is a functional block diagram illustrating a general CDN service providing system.

A plurality of content providers (CPs) 111, 112, and 113 requests CDN service providers (CDNSPs) 120 to store the content they want to provide. The content is stored in each of the edge servers 131 and 132 installed in the ISP. That is, the same content is stored in all the edge servers 131 and 132 managed by the CDN service provider 120.

Thereafter, when any Internet user 141, 142, 143 requests a content service from the content provider (CP) 111, 112, 113, the CDN service provider 120 determines the edge server (the nearest server). 131 and 132 are connected, and the Internet user receives the requested content from the corresponding edge server 131 or 132.

In the above-described CDN service providing system, the service area in which the content provider CP can provide content is limited to the service area of the CDN service provider contracted with the corresponding content provider CP. For example, the content provider a contracted with the CDN service provider A can use the content service only in the A CDN network, so only the customers connected to the A CDN network can use the content provider a. Therefore, the customers of the CDN service provider B cannot use the contents of the content provider a provided by the CDN service provider A in a normal way.

The above-described CDN service providing system has a problem that it is economically expensive because the content provider has to contract with several CDN service providers instead of one CDN service provider in order to expand its service area. In addition, the Internet user can receive the service for the content provider's contents contracted with the CDN network connected to him, but the content provider's contents that are not contracted with the CDN network connected with his / her can not receive the service. There is a problem that comes with inconvenience.

An object of the present invention proposed to solve the above problems of the prior art, by connecting a CDN service provider to allow any CDN service provider to service the content that is being serviced in its own network to other CDN network The present invention provides a system and method for sharing content between users.

1 is a functional block diagram showing a typical CDN system;

2 is a functional block diagram illustrating a content sharing system according to an embodiment of the present invention.

3 is a timing diagram illustrating a content sharing method according to an embodiment of the present invention.

※ Explanation of code about main part of drawing ※

210: multi-CDN manager 220: core system

231, 232, 233: multi CDN interface

241, 242, 243: CDN service provider

The content sharing system between CDN service providers according to the present invention for achieving the above object, in the sharing system to accommodate a plurality of content delivery network (CDN) service providers to share content between the CDN service providers, the plurality of A multi-CDN manager for controlling the registration, distribution, and service of shared content among CDN service providers, and receiving processing status from the plurality of CDN service providers;

When any CDN service provider requests content sharing through the multi-CDN manager, information related to the shared content (content size, creation date, content type) is stored, and the shared content output from the multi-CDN manager is registered and distributed. A core system for processing a service control signal and providing the service control signal to the CDN service provider, receiving a processing state provided from the CDN service provider, and delivering the processing status to the multi-CDN manager;

And a plurality of multi-CDN interfaces that match between each of the CDN service providers, the multi-CDN manager and the core system.

In addition, the content sharing method between CDN service providers according to the present invention, in a content sharing method in a sharing system to accommodate a plurality of content delivery network (CDN) service providers to share content between the CDN service providers, When the first CDN service provider requests to register shared content with the second CDN service provider, the first CDN service provider authenticates the first CDDN service provider and transmits a distribution command for the shared content to the first CDN service provider, thereby providing the first CDN service provider. A shared content distribution step of distributing the shared content to the second CDN service provider;

When the shared content distribution completion report message and a service start request are received from the first CDN service provider after the shared content distribution step, the second CDN service provider transmits the shared content service start command to the second CDN service provider. A service initiation step of allowing customers to start a CDN service of the shared content;

When the shared content service termination request is received from the first CDN service provider after the service initiation step, the second CDN service provider delivers the shared content service termination command to the second CDN service provider to terminate the CDN service of the shared content. And a service termination step, and repeating the service start step and the service end step according to the service start / end request of the first CDN service provider.

More preferably, while the shared system repeatedly performs the service start step and the service end step, the second CDN service provider may generate a log generation date, a service start time, a service end time, a log size, a log name, and a log path. And periodically generating metadata about a log including the information and transmitting the metadata to the shared system.

According to the present invention, there is provided a computer-readable recording medium having recorded thereon a program for executing a content sharing method among CDN service providers as described above.

Hereinafter, with reference to the accompanying drawings will be described in more detail "content sharing system and method between the CDN service providers" according to an embodiment of the present invention.

2 is a functional block diagram of a content sharing system between CDN service providers according to an embodiment of the present invention. It controls a plurality of CDN service providers (241, 242, 243) to register, distribute, and service shared content so that a content sharing service can be used, and a multi-CDN manager 210 for collecting related information, and a multi-CDN manager ( A core system 220 for processing various information collected by the processor 210 and transmitting it to a corresponding CDN service provider, and a multi-CDN interface matching each CDN service provider with the multi-CDN manager 210 and the core system 220 ( 231, 232, and 233. One multi-CDN interface matches one CDN service provider to the multi-CDN manager and the core system.

3 is a timing diagram illustrating a content sharing method between CDN service providers according to an embodiment of the present invention.

With the first CDN service provider 241 and the second CDN service provider 242 contracted to share content with each other, the first CDN service provider 241 is serving content in its own network (hereinafter referred to as shared content). It will be described taking the process of distributing to the second CDN service provider 242 to provide to the customers of the second CDN service provider 242 as an example.

First, the first CDN service provider 241 accesses the multi-CDN manager 210 through a browser, obtains authentication through ID and password, and then requests the second CDN service provider 242 to share the shared content (S301). ). Then, the multi-CDN manager 210 transmits the shared content registration request to the core system 220 (S302). The shared content registration request message transmitted by the multi-CDN manager 210 to the core system 220 is created as an XML document.

In response, the core system 220 updates the information related to the corresponding shared content (eg, content size, creation date, content type, etc.) to a database in the core system 220, and requests the shared content registration to the first CDN service provider 241. ), And transmits a registration confirmation message including the corresponding information to the multi-CDN manager 210 (S303). At this time, if there is an error, the core system 220 transmits an error code, an error name, a description of the error, and an occurrence time to the multi-CDN manager 210.

If there is no error in the shared content registration request, the core system 220 transmits a distribution command for distributing the corresponding shared content to the multi-CDN interface # 1 231 (S304), which is the multi-CDN interface # 1. It is delivered to the first CDN service provider 241 through 231. The multi-CDN interface # 1 (231) receiving the distribution command examines whether there is an error in the distribution command, and if there is no error, transmits a distribution command reception confirmation message to the core system 220 (S305). At this time, if there is an error in the distribution command, the multi-CDN interface # 1 231 transmits information such as an error code, an error name, a description of the error, and an occurrence time to the core system 220.

The first CDN service provider 241 receiving the distribution command from the multi-CDN interface # 1 231 distributes the shared content to the second CDN service provider 242 through the Internet (S306), and the shared content is the multi-CDN interface #. It is delivered to the second CDN service provider 242 via 1 231 and # 2 232. When the transmission of the shared content is completed, the multi-CDN interface # 1 231 transmits the shared content distribution completion report message to the core system 220 (S307). Then, the core system 220 delivers the shared content distribution completion confirmation message to the multi-CDN manager 210 (S308).

Thereafter, when the CDN service of the shared content distributed through the second CDN service provider 242 is to be started, the first CDN service provider 241 requests the multi-CDN manager 210 to start service of the shared content. Then, the multi-CDN manager 210 makes a service start request to the second CDN service provider 242 through the core system 220 and the multi-CDN interface # 2 232 (S309 and S310). The multi-CDN interface # 2 232 receiving the service start request transmits a service start command reception confirmation message to the core system 220 (S311). However, when an error occurs, the document recording the error code, error name, description and time of occurrence is transmitted to the core system 220. Upon receiving the service start order, the second CDN service provider 242 prepares to serve the shared contents distributed from the first CDN service provider 241 to their customers in the same manner as the contents originally owned, and the service start report message Is transmitted to the core system 220 (S312). Then, the core system 220 transmits the service start confirmation message to the multi-CDN manager 210 (S313).

Meanwhile, to terminate the corresponding shared content service through the second CDN service provider 242, the first CDN service provider 241 requests the multi-CDN manager 210 to terminate the service of the shared content. Then, the multi-CDN manager 210 makes a service termination request to the second CDN service provider 242 through the core system 220 and the multi-CDN interface # 2 232 (S309 and S310). The multi-CDN interface # 2 (232) receiving the service termination request transmits a service termination instruction reception confirmation message to the core system 220 (S311). Upon receiving the service termination command, the second CDN service provider 242 terminates the shared content service distributed from the first CDN service provider 241 and transmits a service termination report message to the core system 220 (S312). Then, the core system 220 transmits the service termination confirmation message to the multi-CDN manager 210 (S313).

That is, each time the service starts and ends with respect to the shared content of the second CDN service provider 242, the related information is transmitted to the core system 220, and is again transmitted to the multi-CDN manager 210. In addition, when an error occurs at the start and end of service, information such as an error code, an error name, a description of the error, and an occurrence time is transmitted.

On the other hand, the second CDN service provider 242 writes the service status of the shared content as the metadata for the log and periodically reports to the core system (S314). Metadata for this log includes information such as log generation date, service start time, service end time, log size, log name, and log path. When the log completion report is received from the second CDN service provider 242, the core system 220 transmits a log completion confirmation message 315 to the multi-CDN manager 210 (S315).

The core system 220 may forcibly request log information when an abnormality occurs in periodically collecting log information, that is, when a log document is not received from the second CDN service provider 242 for a predetermined period of time. When the log transmission request is made to the second CDN service provider 242 through # 2 (232) (S316), the second CDN service provider 242 transmits a log transmission request reception confirmation message to the core system (S317). Steps S314 and S315 are performed.

While the invention has been described above based on the preferred embodiments thereof, these embodiments are intended to illustrate rather than limit the invention. It will be apparent to those skilled in the art that various changes, modifications, or adjustments to the above embodiments can be made without departing from the spirit of the invention. Therefore, the protection scope of the present invention will be limited only by the appended claims, and should be construed as including all such changes, modifications or adjustments.

As described above, according to the present invention, since each CDN service provider distributes contents serviced in its own CDN network to another CDN network so that it can be serviced through other CDN networks, the service area of the content provider is expanded and the Internet user They have the advantage that they can conveniently use a variety of content.

Claims (6)

In the sharing system to accommodate a plurality of content delivery network (CDN) service providers to share content between the CDN service providers, A multi-CDN manager controlling the registration, distribution, and service of shared content between the plurality of CDN service providers and receiving processing status from the plurality of CDN service providers; When any CDN service provider requests content sharing through the multi-CDN manager, information related to the shared content (content size, creation date, content type) is stored, and the shared content output from the multi-CDN manager is registered and distributed. A core system for processing a service control signal and providing the service control signal to the CDN service provider, receiving a processing state provided from the CDN service provider, and delivering the processing status to the multi-CDN manager; And a plurality of multi-CDN interfaces matching each of the CDN service providers, the multi-CDN manager and the core system. A content sharing method in a sharing system for accommodating a plurality of content delivery network (CDN) service providers to share content between the CDN service providers, When any first CDN service provider requests to register shared content with a second CDN service provider, the first CDN service provider is authenticated and a distribution command for the shared content is transmitted to the first CDN service provider, thereby providing the first CDN service. A shared content distribution step of causing a provider to distribute the shared content to the second CDN service provider; When the shared content distribution completion report message and a service start request are received from the first CDN service provider after the shared content distribution step, the second CDN service provider transmits the shared content service start command to the second CDN service provider. A service initiation step of allowing customers to start a CDN service of the shared content; When the shared content service termination request is received from the first CDN service provider after the service initiation step, the second CDN service provider delivers the shared content service termination command to the second CDN service provider to terminate the CDN service of the shared content. Including a service termination step, And repeating the service start step and the service end step according to the service start / end request of the first CDN service provider. The method of claim 2, wherein the shared content distribution step, The shared system receives and authenticates an ID and password from the first CDN service provider connected to its own system, and authorizes the registration, distribution, and service start / end of shared content; Determining, by the sharing system, whether the shared content registration is possible when the shared content registration request is received from the first CDN service provider; The sharing system is a content sharing method between CDN service providers, comprising the step of delivering a distribution command for the shared content to the first CDN service provider if the registration of the shared content. The method of claim 2, wherein the sharing system repeatedly performs the service start step and the service end step. The second CDN service provider periodically generates metadata for a log including a log generation date, a service start time, a service end time, a log size, a log name, and log path information, and transmits the metadata to the shared system. How to share content between CDN service providers. The method of claim 4, wherein if the log information is not transmitted from the second CDN service provider for a predetermined period of time, the sharing system transmits a log information transmission request command to the second CDN service provider to transmit the log information from the second CDN service provider. How to share content between CDN service providers, characterized in that receiving. In a sharing system for accepting a plurality of content delivery network (CDN) service providers to share content between the CDN service providers, When any first CDN service provider requests to register shared content with a second CDN service provider, the first CDN service provider is authenticated and a distribution command for the shared content is transmitted to the first CDN service provider, thereby providing the first CDN service. A shared content distribution step of causing a provider to distribute the shared content to the second CDN service provider; When the shared content distribution completion report message and a service start request are received from the first CDN service provider after the shared content distribution step, the second CDN service provider transmits the shared content service start command to the second CDN service provider. A service initiation step of allowing customers to start a CDN service of the shared content; When the shared content service termination request is received from the first CDN service provider after the service initiation step, the second CDN service provider delivers the shared content service termination command to the second CDN service provider to terminate the CDN service of the shared content. A service termination step of allowing the service; A computer-readable program recording a program for executing a content sharing method between CDN service providers including a repeating step of repeating the service starting step and the service ending step according to the service start / end request of the first CDN service provider. Record carrier.