KR20040074403A - System and method for wholesale service of Content Delivery Network - Google Patents

Abstract

PURPOSE: A system and a method for offering an integrated CDN(Contents Delivery Network) service are provided to make a web user receive the integrated service contents through an edge node by distributing the contents to edge nodes if a CDN service provider requests an integrated service for the contents. CONSTITUTION: A contents distributor(231) distributes/stores the integrated service contents provided from the CDN service provider to the edge node(250). A distribution information database(234) stores the location information of the edge nodes that the contents distributor distributes the integrated service contents. A contents router(232) searches the information for the edge node close to the web user(260) while storing the integrated service contents, and provides the information to the web user. A CDN interface(240) matches the CDN service provider with the contents provider and a contents router.

Description

CDN integrated service providing system and method {System and method for wholesale service of Content Delivery Network}

The present invention relates to a CDN integrated service providing system and method for a plurality of content delivery network (CDN) service providers to integrate the content that is being serviced to serve web users.

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. Recently, the subscriber network between a network operator called an Internet Service Provider (ISP) and a web user has been replaced by an asymmetrical or symmetrical digital line, and as the bandwidth available to the user is expanded, the demand for the user's massive content is exploding. It is increasing. 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.

To solve the problems of the prior art is a content delivery network (CDN) service. This CDN service is designed to store the content serviced by a content provider (CP) in several edge nodes (stratefully installed in several ISPs) and to be located in the vicinity of the user when a content request is generated from an Internet user. This is a large data transmission service that provides contents to the user from the CDN edge node.

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

The plurality of content providers (CPs) 111, 112, and 113 provide the CDN Service Provider (CDNSP) CDN Service Provider (CDNSP) 120 with the content to be serviced and request to store the content. Then, the CDN service provider 120 stores the corresponding contents in the edge nodes 131 and 132 installed in various ISPs, respectively. That is, the same content is stored in the plurality of edge nodes 131 and 132 managed by the CDN service provider 120. When any Internet user 141, 142, 143 requests a content service from a content provider (CP) 111, 112, 113, the CDN service provider 120 may determine which edge node 131, 132 is closest to that Internet user. ), The Internet user is provided with the corresponding content from the proximity edge nodes (131, 132).

In the above-described CDN service providing system, a service area in which a content provider (CP) can provide content is limited to a service area of a CDN service provider contracted with itself. For example, since the content provider (a) contracted with the CDN service provider (A) is only able to provide content services in the CDN network (A), only the customers connected to the CDN network (A) can use the content provider (a). have. Therefore, 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.

Therefore, in the related art, a content provider needs to make separate contracts with a plurality of CDN service providers in order to broaden their service area, and thus there is a problem in that the cost is economically expensive. 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 is to distribute the integrated service requested content (integrated service content) to a plurality of edge nodes when the integrated service for any content is requested from the CDN service provider. In addition, the present invention is to provide a CDN integrated service providing system and method for enabling a web user to receive the corresponding integrated service content through an edge node.

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

2 is a functional block diagram illustrating a CDN integrated service providing system according to an embodiment of the present invention;

3 is an internal configuration diagram of a CDN integrated service provider according to an embodiment of the present invention;

4 is a timing diagram illustrating a CDN integrated service providing method according to an embodiment of the present invention.

※ Explanation of code about main part of drawing ※

210: content provider 220: CDN service provider

230: CDN integrated service provider 240: CDN interface

250: edge node 231: content distributor

232: Content Router 233: Content Mall

234: Distribution Information Database

The CDN integrated service providing system according to the present invention for achieving the above object, receiving a plurality of integrated service content from a plurality of CDN service providers (CDN Service Provider) providing a CDN service to a plurality of content providers a plurality of edges In the CDN integrated service providing system that stores in the node to serve the web users,

A content distributor for distributing and storing the integrated service content provided from the CDN service provider to the plurality of edge nodes;

A distribution information database storing location information of an edge node to which the content distributor distributes the integrated service content;

A content router that retrieves edge node information adjacent to the web user from the distribution information database and provides the web user when the integrated service content is requested from the web user, while storing the integrated service content;

And a CDN interface that matches between the CDN service provider, the content distributor, and the content router.

In addition, in the CDN integrated service providing method according to the present invention, the integrated service content is received from a plurality of CDN Service Providers (CDN Service Provider) for providing a CDN service to a plurality of content providers and stored in a plurality of edge nodes In the integrated service providing method of the CDN integrated service providing system serving web users,

A first step of distributing and storing the integrated service content to the plurality of edge nodes when a CDN integrated service of the integrated service content is requested from the CDN service provider;

A second step of transmitting the integrated service content storage result to the CDN service provider when the integrated service content storage result is transmitted from the edge node, and updating routing information when the integrated service content storage is successful;

When a service request of the integrated service content is requested from a web user, the web node examines an edge node closest to the web user from the routing information and provides the web user with information about the neighbor edge node, so that the web user provides the neighbor edge node. And a third step of receiving the integrated service content from the service.

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

2 is a functional block diagram of a CDN integrated service providing system according to an embodiment of the present invention. This includes a plurality of content providers 210 to receive a CDN integrated service, a plurality of CDN service providers 220 accommodating the content providers 210 and providing CDN services; CDN integrated service provider 230 to provide the CDN integrated service to the content provider 210, CDN interface 240 matching the CDN service provider 220 and CDN integrated service provider 230, CDN integrated service provider An edge node 250 that stores contents to be CDN integrated service under the control of 230 is included.

As illustrated in FIG. 3, the CDN integrated service provider 230 includes a content distributor 231, a content router 232, a content mall 233, and a distribution information database 234. The content distributor 231 stores the content requested from the CDN service provider 220 for the integrated service (hereinafter referred to as integrated service content) in the content mall 233 and distributes the content to the edge node 250. The content router 232 stores the information (distribution information) about the edge node to which the integrated service content is distributed in the distribution information database 234, and when the service request is made for the integrated service content from the web user 260, the integration is performed. While storing the service content, the web user 260 provides information about the edge node 250 adjacent to the web user 260 to the corresponding web user 260 so that the web user 260 services the integrated service content from the adjacent edge node 250. To receive it.

4 is a timing diagram illustrating a CDN integrated service providing method according to an embodiment of the present invention.

First, the content provider (CP) 210 requests a CDN integrated service for arbitrary content from the CDN service provider (CDNSP) 220 (S401). Hereinafter, the content of the CDN integrated service is referred to as integrated service content. CDN service provider (CDNSP) 220 sets the content type for the integrated service content, the content name, the location where the raw content is stored, the location (distribution information) of the edge nodes to which the content is to be distributed, and the meta information about the service providing range. The CDN integrated service request signal including the meta information is transmitted to the CDN interface 240 (S402).

When the CDN interface 240 receives the CDN integrated service request signal from the CDN service provider (CDNSP) 220, the CDN interface 240 transmits the CDN integrated service request signal to the content distributor 231 of the CDN integrated service provider (S403).

The content distributor 231 of the CDN integrated service provider determines whether the corresponding integrated service content is stored in the raw content storage location received from the CDN service provider (CDNSP) 220, and if there is an integrated service content, the integrated service content. The service content is placed in the content mall 233 (S404). Then, the content distributor 231 distributes the integrated service content to the edge node 250 according to the distribution information of the corresponding integrated service content included in the CDN integrated service request signal (S405).

The edge node 250 uses the integrated service contents received from the content distributor 231 of the CDN integrated service provider according to the service type (VOD (Video On Demand) service, live service, file download service) of the corresponding content. Store in the location (S406). The integrated service content storage result is transmitted to the content distributor 231 of the CDN integrated service provider (S407).

The content distributor 231 transmits the integrated service content storage result to the CDN interface 240 (S408). If the CDN interface 240 succeeds in storing the integrated service content, the CDN interface 240 sends a request for updating routing information to the content router 232 (S409). Then, the content router 232 updates the routing information (S410), and transmits the result to the CDN interface 240 (S411). Meanwhile, the CDN interface 240 transmits the integrated service content storage result to the CDN service provider 220 (S412), and the CDN service provider 220 transmits the content provider 210 to the content provider 210 (S413). Through the above process, the integrated service content is distributed and stored in multiple edge nodes.

Thereafter, the web user accesses the content provider CP 210 to receive the integrated service content, and requests the content to be provided with the service (S414). Then, the content provider checks whether the corresponding web user is entitled to receive the CDN integrated service, and if the CDN integrated service is the target, transmits the URL information of the CDN integrated service provider to the corresponding web user (S415). When the web user requests the integrated service content by accessing the content router 232 of the CDN integrated service provider using URL information of the CDN integrated service provider (S416), the content router 232 is closest to the web user 260. The edge node 250 is examined and the URL information of the edge node 250 is provided to the web user 260 (S417).

Then, the web user 260 accesses the neighboring edge node using the URL information of the neighboring edge node 250 to request the integrated service content (S418), and the neighboring edge node 250 is the web user 260. The requested integrated service content is provided to the web user 260 (S419).

Meanwhile, the edge node 250 processes the log information providing the integrated service contents to the web user in the form requested by the CDN service provider (CDNSP) 220 or transmits the raw log information to the CDN service provider 220 as it is. to provide. The CDN integrated service provider charges a fee for using the edge node from the CDN service provider, and the CDN service provider 220 receives the integrated content service through the CDN integrated service provider.

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 the integrated service content that is being serviced in each CDN network is received from several CDN service providers and distributed to the edge node to serve the web users, the content providers can provide the service area even at low operating cost. It is extensible, and web users have the advantage of being able to use more various contents conveniently.

Claims (4)

In the CDN integrated service providing system that receives integrated service content from a plurality of CDN service providers providing CDN services to a plurality of content providers, stores them in a plurality of edge nodes, and services them to web users. , A content distributor for distributing and storing the integrated service content provided from the CDN service provider to the plurality of edge nodes; A distribution information database storing location information of an edge node to which the content distributor distributes the integrated service content; A content router that retrieves edge node information adjacent to the web user from the distribution information database and provides the web user when the integrated service content is requested from the web user, while storing the integrated service content; And a CDN interface for matching between the CDN service provider, the content distributor, and the content router. The CDN integrated service providing system of claim 1, further comprising a content mall storing integrated service contents distributed to the edge nodes. Integration of CDN integrated service providing system that receives integrated service contents from multiple CDN service providers that provide CDN services to multiple content providers, stores them in multiple edge nodes, and services them to web users In the service providing method, A first step of distributing and storing the integrated service content to the plurality of edge nodes when a CDN integrated service of the integrated service content is requested from the CDN service provider; A second step of transmitting the integrated service content storage result to the CDN service provider when the integrated service content storage result is transmitted from the edge node, and updating routing information when the integrated service content storage is successful; When a service request of the integrated service content is requested from a web user, the web node examines an edge node closest to the web user from the routing information and provides the web user with information about the neighbor edge node, so that the web user provides the neighbor edge node. And a third step of receiving the integrated service content from the CDN integrated service providing method. The method of claim 3, wherein the edge node transmits log information providing the integrated service content to the CDN service provider to the CDN service provider.