KR20110064141A - Iptv set-top box apparatus and server for providing cdn solution, method and system for providing cdn solution using the same - Google Patents

Abstract

PURPOSE: An IPTV set-top box device, a server, a method providing a cdn solution, and a system thereof are provided to supply safe service by blocking a speed decline when in a traffic congestion. CONSTITUTION: A first IPTV set-top box device(110) provides a first distribution file to a client terminal corresponding to a content transmission request. If connection disability occurred during providing the first distribution file, the first IPT set-top box device transmits disability information to a service management server(220) for moving a work load.

Description

IPTV set-top box apparatus and server for providing CDN solution, method and system for providing CDN solution using same {IPTV SET-TOP BOX APPARATUS AND SERVER FOR PROVIDING CDN SOLUTION, METHOD AND SYSTEM FOR PROVIDING CDN SOLUTION USING THE SAME}

The present invention relates to an IPTV set-top box apparatus and a server for providing a CDN solution, a method and a system for providing a CDN solution using the same, and more particularly, to provide a stable service even when traffic is concentrated by increasing available resources. The present invention relates to an IPTV set-top box device and server capable of increasing network security and reducing network construction and operation costs, and a method and system for providing a CDN solution using the same.

The basic method of transmitting content on the Internet is that the client terminal requests and downloads the entire file of the content from the server having the content. This method has a problem that it is difficult to predict the time required to download the entire file according to the network situation because the dependency on the network between the server and the client terminal interval, and it takes a long time to download the entire file.

The CDN (Contents Delivery Network) system has emerged as an alternative that can dramatically improve the performance of the Internet by improving the connection quality and speed problems of the Internet. The CDN system is a service that distributes content by using a plurality of local servers and traffic management techniques installed in major points of the network in order to solve bottlenecks frequently occurring in the content delivery process. Internet business operators such as content providers can efficiently accommodate Internet users through the CDN system, and the Internet users can quickly receive content using the most appropriate server (eg, a close and spare server).

Recently, Internet traffic is rapidly increasing due to the increase of various internet access devices such as home contents and mobile phones, video contents such as Internet Protocol TeleVision (IPTV), User Created Contents (UCC), streaming broadcasting, etc. Is increasing. On the other hand, as the growth rate of the Internet bandwidth is lower than the traffic growth rate, the growth of CDN is expected to stand out as a technology to fill the gap between traffic and bandwidth. However, due to the high line rental cost from CDN operators, it is an obstacle to the spread of related services such as media.

For this reason, some CDN operators do not use traditional local servers to reduce leased line lease costs from Internet Service Providers (ISPs), but use a grid delivery method using an end user's personal computer. Is trying.

However, the conventional grid transmission method cannot guarantee Always-On of the user PC, there is an issue such as security by using some resources of the user PC arbitrarily, and there is a line charge with the ISP. There was a problem, such as an issue, and stable service could not be provided.

The present invention has been proposed to solve the problems of the prior art as described above, the purpose of which is to utilize the idle resources of the user, the traffic concentration by adopting a home device that can replace the user PC that causes various problems IPTV set-top box device and server and CDN solution using the same to provide CDN solution that can prevent the slowdown even in the city and provide stable service and excellent contents security to control abnormal access, illegal recording and illegal use The present invention provides a method and system.

Another object of the present invention is to make full use of ISP networks that are already widely available to enable the use of CDN services that were difficult to introduce at high network costs at a low cost, and to improve network efficiency to improve service quality and speed. An IPTV set-top box apparatus and server for providing a CDN solution, and a method and system for providing a CDN solution using the same are provided.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

The CDN solution providing system according to the present invention is a CDN solution providing system for providing a content corresponding to the content transmission request to a client terminal sending a content transmission request through an ISP network, by dividing the content into divided files IPTV set-top box A service management server for distributing and storing the devices and transferring the workload to another IPTV set-top box device when the IPTV set-top box device fails; Downloading and storing the first divided file of the content from the service management server, providing the first divided file to the client terminal in response to the content transmission request, and the connection failure occurs during the provision of the first divided file A first IPTV set-top box device for transmitting a failure notification to the service management server in order to move a workload; And a second to download and store the first divided file under the control of the service management server, and continuously provide the first divided file to the client terminal as a connection failure of the first IPTV set-top box device occurs. IPTV set top box device.

An IPTV set-top box apparatus for providing a CDN solution according to the present invention includes an IPTV service provider for providing a broadcast service; And storing the divided file of the content under the control of the service management server, and if the content transmission request is received from the client terminal connected to the ISP network, provides the divided file of the content to the client terminal through the ISP network, and a connection failure occurs. If so, the CDN service providing unit for transmitting a failure notification to the service management server to move the workload.

The service management server for providing a CDN solution according to the present invention comprises: a file distribution register for dividing and dividing content into divided IPTV set-top box devices; An in-house resource manager that registers and manages resource operation information including device information and file information for each of the IPTV set-top box devices in association with the file distribution register; And when an access failure occurs in the IPTV set-top box device storing the divided file of the content, the workload is transferred to another IPTV set-top box device to continuously provide the divided file, and the changed resource operation information is stored in the home. It includes a load movement execution unit for notifying the resource management unit.

On the other hand, in the CDN solution providing method of the set-top box device according to the present invention, as the content is distributed and stored in divided files by the service management server, the first IPTV set-top box device downloads the divided file of the content from the service management server Registering to store; A downloading step of the first IPTV set-top box apparatus providing the split file to the client terminal through an ISP network when a content transmission request for the content is received from a client terminal connected to an ISP network; And when the connection failure between the first IPTV set-top box device and the client terminal occurs while providing the split file, the first IPTV set-top box device manages the service so that the client terminal can continuously download the split file. And a load movement step of moving the workload to the second set-top box device in association with the server.

The method of providing a CDN solution of a server according to the present invention includes a registration step of a service management server dividing and storing divided files of content among IPTV set-top box devices; A failure occurrence step of recognizing a connection failure of the IPTV set-top box device by receiving the failure notification when the connection failure occurs in the IPTV set-top box device storing the divided file of the contents; And a load movement step of allowing the service management server to transfer the workload of the IPTV set-top box device to another IPTV set-top box device to continuously provide the divided file of the contents.

According to the present invention, by using idle resources of users when providing CDN services, it is possible to provide a stable service by preventing the speed drop even when concentrating traffic, and excellent contents security to thoroughly control abnormal access, illegal recording, illegal use, etc. have.

In addition, according to the present invention, it is possible to use the CDN service, which was difficult to be introduced at a high cost of the network, by utilizing the ISP network, which is already widely activated, at a low cost, and to improve network efficiency to improve service quality and speed. .

Hereinafter, an IPTV set-top box apparatus and server for providing a CDN solution according to a preferred embodiment of the present invention, a method and a system for providing a CDN solution using the same will be described in detail with reference to FIGS. 1 to 6.

1 is a schematic configuration diagram of a CDN solution providing system for providing a CDN solution according to an embodiment of the present invention.

The CDN solution of FIG. 1 configures an idle network with home devices connected to IP (Internet Protocol) used by subscribers who subscribe to high-speed Internet services of ISPs (Internet Service Providers), and uses idle resources of CDNs. It is a method that can be applied to Content Delivery Network) service.

Referring to FIG. 1, the CDN solution providing system adopts an IPTV set-top box device 100 connected to an ISP network with an IP as a home device providing idle resources for a CDN solution, and is connected to each other. Divide and store the divided files of the content in (100), and controls the client terminal 300 to receive the content directly from the IPTV set-top box device 100 through the ISP network.

CDN solution providing system according to an embodiment of the present invention is a CDN service system 200, a plurality of IPTV set-top box devices (100) for providing idle resources as a home device of the resource providers, client terminals of the final client to request the content provided And 300.

The CDN service system 200 secures an idle network from the IPTV set-top box devices 100 of the ISP subscriber who provides the resources, and contents the leased line obtained in return for paying the broadband uplink fee to the ISP service provider. Provided to the providing server 210 to be utilized in the CDN service. In addition, the CDN service system 200 may provide an ISP with a total solution for performing a solution business, such as CDN applications, management solutions.

The CDN service system 200 provides various contents required for a corresponding service for services such as downloading, streaming, and caching, and includes a content providing server 210 and a service management server. And 220.

The content providing server 210 registers and manages various large-capacity contents such as online games, internet broadcasts, and flash files, and provides each service to the service management server 220 by dividing each content into several divided files for distributed storage. The content providing server 210 secures a CDN line for providing contents by paying a CDN line rent to a service management server 220 securing a unique CDN line and an idle network of an ISP operator, and through the secured CDN line. The client terminal 300 provides a large amount of content such as a game, a video, a sound source, and the like. The large-capacity content provided by the content providing server 210 is managed by the service management server 220 in order to quickly respond to a request of the client terminal 300, and is stored in the IPTV set-top box devices 100 providing idle resources. do.

The service management server 220 distributes and stores the divided files of the content delivered from the content providing server 210 in the IPTV set-top box apparatuses 100 and manages the stored contents, and the file requested by the client terminal 300. The network state of the IPTV set-top box apparatuses 100, the file service state of the content, etc. are comprehensively analyzed to connect the request of the client terminal 300 to the appropriate IPTV set-top box apparatus 100.

The IPTV set-top box apparatus 100 provides its own resources such as CPU, disk space, memory, network, etc. to the client terminal 300 to replace the local server function of the CDN network. The IPTV set-top box apparatus 100 distributes and stores the divided files of the same content under the control of the service management server 220, and, if requested by the client terminal 300, divides the divided files of the contents stored therein. It is provided to the client terminal 300 through the ISP network.

In particular, the IPTV set-top box device 100 moves the work load of the downloaded split file to another IPTV set-top box device 100 when a connection failure occurs while providing the split file to the client terminal 300. By doing so, the client terminal 300 can perform the download continuously from the disconnected portion.

For example, as shown in FIG. 1, one content is divided into three divided files: file # 1, file # 2, and file # 3, and each file is an IPTV set-top box device # 1 (110) or an IPTV set-top box device #. Assume that 2 (120), stored as IPTV set-top box device #N (140).

The client terminal # 1 (310), the client terminal # 2 (320) is an IPTV set-top box device # 1 (110), IPTV set-top box device # 2 (120), which stores portions of the content desired by the client through the ISP network, It connects to the IPTV set-top box device #N 140 and sends a content transfer request to download the divided files of the corresponding content from them. If the connection failure occurs while the IPTV set-top box device # 2 120 is providing the split file # 2, the IPTV set-top box device # 2 120 may move its workload to another IPTV set-top box device 100 to move the workload. Upload the split file to the service management server 220.

The service management server 220 receiving the split file from the failed IPTV set-top box device # 2 (120) selects the IPTV set-top box device #K 130 for transferring the workload, and selects the selected IPTV set-top box device #K. Download the split file to 130. Client terminals 300 may be connected to the IPTV set-top box device #K (130) to receive the corresponding split file continuously.

The service management server 220 may, in real time or periodically, information on resources held by the IPTV set-top box devices 100 registered as resource providers, for example, central processing unit (CPU) processing capability, disk space memory, and network speed. It can be collected and stored and used to select a device suitable for load transfer in the event of a failure. The service management server 220 controls the IPTV set-top box device 100 to continuously provide the service to the client terminal 300 by storing the divided file of the content in the newly selected IPTV set-top box device 100. By using the IPTV set-top box devices 100, there is no need to operate a separate local server for providing a CDN service, thereby reducing network construction / operation costs.

The client terminal 300 is a client to access the IPTV set-top box devices 100 through the ISP network to provide the desired content, and can be connected to the ISP network such as a PC, a personal mobile terminal, a mobile phone, and receive contents. Kind of device.

The client terminals 300 request contents for a certain service from the CDN service system 200 through the ISP network, and the requested services are provided by the IPTV set-top box apparatuses 100 connected to the ISP network. Since the line between the content providing server 210 and the service management server 220 is a finite resource, in order to increase the line capacity, the idle network of the ISP operator is used in addition to the unique CDN line.

More specifically, the client terminal 300 sends a content transmission request to the IPTV set-top box device 100 for distributing and storing the content through the ISP network in order to consume the content, and in response to the IPTV set-top box connected to the ISP network. Download desired content from the devices 100. Here, the IPTV set-top box apparatuses 100 may minimize the bandwidth usage of the CDN network by downloading a split file of content to the client terminal 300 through the uplink band of the ISP network.

FIG. 2 is a diagram illustrating an internal configuration of the IPTV set-top box device shown in FIG. 1.

The IPTV set-top box apparatus 100 employs a hypervisor structure to virtually divide hardware resources of a single device to create a plurality of virtual machines (VMs), and an operating system (OS) in each virtual machine. System) and the application are implemented independently, and through this structure, the IPTV service provider 105 and the CDN service provider 106 are operated independently.

2, the IPTV set-top box apparatus 100 includes a hardware 101 portion, a hypervisor virtual platform 102, a host operating system execution unit 103, a guest operating system execution unit 104, and an IPTV service providing unit 105. ) And the CDN service provider 106.

The hardware 101 is a layer that implements the physical resources necessary to provide the IPTV service and the CDN service. The hardware 101 includes processors, disk space, memory, a display, a graphics card, a communication channel, an interface, and the like.

The hypervisor virtual platform 102 is a special kind of abstraction layer disposed between the operating systems running through the host operating system 103 and the guest operating system 104 that are separated from each other and the protected physical resources. It provides an isolated virtual hardware platform for running them. The hypervisor virtual platform 102 functionally multiplexes the physical resources protected for the operating systems and specifies the resources for each operating system in a virtual manner. For example, if the IPTV set top box device 100 has one processor and 1 GB of memory, the hypervisor virtual platform 102 may allocate half of the processor cycle and half of the memory (512 MB) to each operating system. If each operating system attempts to communicate with a physical resource or vice versa, the hypervisor virtual platform 102 may perform appropriate buffering and translations so that each operating system recognizes that it is the only operating system.

As described above, the IPTV service providing unit 105 and the CDN service providing unit 106 are built on a host operating system (Host OS) and a guest operating system (Guest OS), each of which is a different operating system in the form of a hypervisor.

The host operating system execution unit 103 builds an operating system necessary to perform the application of the IPTV service providing unit 105, software such as various device drivers for the IPTV service, and an API (Application Programming Interface) defined for application development. To provide an environmental environment.

The guest operating system execution unit 104 is provided with a virtual hardware platform that is isolated from the host operating system execution unit 103 through the hypervisor virtual platform 102, and thus is required to perform an application of the CDN service provider 106. Run an independent operating system.

The IPTV service provider 105 is a part in which an application for providing an IP-based broadcast service is installed under a host OS.

The CDN service providing unit 106 is a part in which an application for providing a CDN service is installed under the guest OS, and implements a function of a local server in association with the service management server 220 and responds to a request of the client terminal 300. It provides content that clients want in the form of services such as downloading, streaming, and caching. To this end, the CDN service provider 106 downloads and stores the divided file of the content from the service management server 220, and receives the content transmission request from the client terminal 300 connected to the ISP network through the ISP network. Provides a divided file stored in the client terminal 300.

In addition, the CDN service provider 106 transmits a failure notification to the service management server 220 to move the workload to another device when a connection failure occurs. The CDN service provider 106 may upload its own split file to the service management server 220 together with the failure report, or may transmit only the failure report without the split file. If the split file is not uploaded to the service management server 220 together with the failure notification, the service management server 220 searches for the split file stored in its database or the database of the content providing server 210, and then searches for the split file. IPTV set-top box device 100 can be delivered directly. When one split file is simultaneously stored in multiple IPTV set-top box devices 100, the service management server 220 instructs the spare IPTV set-top box device 100 storing the same split file to transmit the split file. You may.

The client terminal 300 and the IPTV set-top box apparatus 100 perform upload / download in a state of being connected to each other through an ISP network, not through the CDN service system 200. In particular, since the CDN service providing unit 106 of the IPTV set-top box apparatus 100 may download the divided file of the content to the client terminal 300 through the uplink band of the ISP network, the clients may access the local servers on the CDN network. Unlike the conventional method of downloading contents from the CDN network, it is possible to minimize the use of bandwidth and save bandwidth.

Since the IPTV service providing unit 105 and the CDN service providing unit 106 are built on different operating systems and operate separately from each other, they do not perform work load sharing with each other and are separately on or off. (Off) can be controlled. By adopting such a structure, the broadcast service quality can be prevented from being degraded by adding the CDN service function to the broadcast service function of the IPTV set-top box device 100.

Accordingly, the CDN service provider 106 may be configured to allow the resource providers to switch the on / off state for convenience, and the traffic load of the IPTV service provider 105 is greater than or equal to a threshold. In this case, it can be switched off.

Meanwhile, a CDN service provider or a CDN solution provider may consider a method of paying a predetermined cost to resource providers providing idle resources of the IPTV set-top box device 100 owned by the CDN service. In this case, the resource providers may be paid for providing idle resources, and the operators who are the main agents of the CDN service should always turn on the IPTV set-top box device 100 to always-on state. You can get it.

3 is an internal configuration diagram of a service management server shown in FIG. 2.

The service management server 220 controls the IPTV set-top box devices 100 utilized in the CDN service to directly provide the service requested by the client terminals 300, thereby providing the content providing server 210 and the service management server 220. May provide more services to the client terminals 300 than line capacity (capacity of unique CDN line). As the number of IPTV set-top box devices 100 providing idle resources increases, the client terminal 300 minimizes line capacity (capacity of unique CDN line) between the client terminal 300 and the CDN service system 200. They will be able to smoothly provide the services they demand.

Referring to FIG. 3, the service management server 220 includes a file distribution registration unit 221, an indoor resource management unit 222, a load movement execution unit 223, a resource operation database 224, and a content database 225. .

The file distribution registration unit 221 divides and stores each content stored in the content database 225 into several divided files and distributes them to the IPTV set-top box apparatuses 100.

In-house resource management unit 222 is connected to the file distribution register unit 221 resource management information including device information and file information for each device for the IPTV set-top box device 100 that stores and stores the content resource management database 224 ), And integrated management.

The load movement execution unit 223 transfers the workload to another IPTV set-top box device 100 when the connection failure occurs in the IPTV set-top box device 100 storing the divided file of the content, and continues the split file. It can be provided, and the changed resource management information to the home resource management unit 222 to be updated with the latest information.

In one embodiment, the load movement execution unit 223 receives the retransmission split file from the IPTV set-top box device 100 has a connection failure, and the IPTV set-top box device for transferring the workload in conjunction with the home resource management unit 222 Select 100 and provide a retransmission split file to the selected IPTV set-top box device 100. As the IPTV set-top box device 100 to move the load in the event of a failure, one of the IPTV set-top box devices 100 providing idle resources does not store the divided file, or the network state and file service state of the content. By monitoring this, you can select the one that is easy to use according to the monitoring result.

In another embodiment, when the fault notification is received from the IPTV set-top box device 100, the load movement execution unit 223 communicates with the in-house resource manager 222 to divide the IPTV set-top box device 100 that receives the fault notification. Search for the file and select the IPTV set-top box device 100 to transfer the workload. Then, the load movement execution unit 223 extracts the split file from the self-equipped content database 225 or the external content providing server 210 and downloads the split file to the selected IPTV set-top box device 100.

In another embodiment, the file distribution registration unit 221 may pre-store one split file as a plurality of IPTV set-top box devices 100 and store the same split file with respect to the IPTV set-top box devices 100. The list information is registered in the resource operation database 224. When the load movement execution unit 223 receives the failure notification from the IPTV set-top box device 100, the preliminary IPTV set-top box storing the same split file as the IPTV set-top box device 100 by communicating with the home resource management unit 222. The device 100 is inquired, and the reserved IPTV set-top box device 100 instructs the client terminal 300 to provide a split file.

The content database 225 stores contents for a service provided by the content providing server 210 and divided files for each content. The resource operation database 224 registers resource operation information such as device information and file information for each device for the IPTV set-top box apparatuses 100 that share idle resources. The resource management unit 222 or the load movement execution unit ( If requested by 223, corresponding information is provided. The content database 225 or the resource management database 224 may be built independently from the outside.

4 is a data flowchart of a CDN solution providing method according to an embodiment of the present invention. For convenience of description, divided files of the same content are divided and stored in the IPTV set-top box device # 1 (110), the IPTV set-top box device # 2 (120), and the IPTV set-top box device #N (140). It is assumed that a failure occurs in the IPTV set-top box device # 2 120 while providing a service, so that the load is transferred to the IPTV set-top box device #K 130.

First, the service management server 220 distributes and stores the divided files of the same content in the IPTV set-top box devices (110, 120, 140) providing idle resources (S110, S120, S130). IPTV set-top box device # 1 (110), IPTV set-top box device # 2 (120), IPTV set-top box device #N (140) is a split file # 1 (S110), split file # of the content from the service management server 220 2 (S120) and split file # 3 (S130) are downloaded and stored respectively.

The end client accesses the ISP network through the client terminal 300 to store the desired content of the IPTV set-top box device # 1 (110), IPTV set-top box device # 2 (120), IPTV set-top box device #N ( In step 140, the IPTV set-top box devices 110, 120, and 140 receiving the content transmission request provide the split file of the content to the client terminal 300 in response thereto. S210, S220, S230).

If a connection failure occurs between the IPTV set-top box device # 2 120 and the client terminal 300 while providing a service (S310), the IPTV set-top box device # 2 120 causing the failure may have a split file #. In order to be able to download 2 consecutively send a failure notification to the service management server 220 of the CDN service system 200, and uploads its own split file # 2 with the failure notification (S320).

As such, the IPTV set-top box apparatuses 100 may fail to access any IPTV set-top box apparatus 100 while providing the divided files of the content to the client terminal 300 through the ISP network at the request of the client terminal 300. If so, the service management server 220 is provided with a split file from the IPTV set-top box device 100 (S320).

In addition, the service management server 220 selects the IPTV set-top box device #K 130 as a device capable of continuously providing a service by moving the workload of the failed IPTV set-top box device # 2 (120), The divided file # 2 received from the IPTV set-top box device # 2 120 is provided to the selected IPTV set-top box device #K 130 (S330).

The service management server 220 transfers the divided file provided from the failed IPTV set-top box device # 2 (120) to the IPTV set-top box device #K (130), so that the client terminal (300) can move the load through the ISP network. From the IPTV set-top box device #K 130, the split file can be continuously provided from the part after the failure (S340), and through this process, split file # 1, split file # 2, split file # 3 Downloading can be completed to receive the content (S350).

As such, when a failure occurs in the IPTV set-top box apparatus 100, the IPTV set-top box apparatus 100 uploads a retransmission split file together while notifying the service management server 220, and the service management server 220 has a connection failure. Receive the retransmission split file from the IPTV set-top box device 100 generated. Thereafter, the service management server 220 selects another IPTV set-top box device 100 for transferring the workload, and then provides a retransmission split file to the corresponding IPTV set-top box device 100.

5 is a data flow diagram of a CDN solution providing method according to another embodiment of the present invention.

The service management server 220 divides and stores the divided files (split file # 1, split file # 2, split file # 3) of the content into IPTV set-top box devices 110, 120, and 140 as in FIG. (S110 to S130).

The client terminal 300 transmits the content to the IPTV set-top box device # 1 (110), the IPTV set-top box device # 2 (120), and the IPTV set-top box device #N (140) by accessing an ISP network to receive desired content. Sending a request, the IPTV set-top box devices (110, 120, 130) receiving this provides a service by transmitting a split file of the content to the client terminal 300 (S210 to S230).

If a connection failure occurs in the IPTV set-top box device # 2 (120) during service provision (S310), the IPTV set-top box device # 2 (120) sends out a failure notification, and the service management server 220 receives the IPTV set-top box. The connection failure of the device # 2 120 is recognized (S311).

Subsequently, the service management server 220 transfers the workload of the IPTV set-top box device # 2 120 to another IPTV set-top box device 100 so as to continue to provide a split file of content that has been interrupted in download due to a failure. To help. To this end, the service management server 220 retrieves the split file # 2 stored in the IPTV set-top box device # 2 (120) that has sent a failure notification (S321), and can provide the current idle resources to the device to transfer the load. After selecting the IPTV set-top box device #K (130) and extracts a split file # 2 from its own database or external content providing server 210 to download to the selected IPTV set-top box device #K (130) (S331). S340 and S350 are the same as the process of FIG.

6 is a data flow diagram of a CDN solution providing method according to another embodiment of the present invention.

S110 to S130 and S210 to S230 are the same as those of FIGS. 4 and 5. However, in the registration step, the service management server 220 stores the divided files of the content as a plurality of IPTV set-top box apparatuses 100 (S121 and S122), and stores the same split file. The list information about the data is registered in the resource management database 224 as a file storage list for each device (S140). In the case of FIG. 6, the split file # 2 is stored in both the IPTV set-top box device # 2 120 and the IPTV set-top box device # K 130.

When a failure occurs (S310), IPTV set-top box device # 2 (120) receives a failure notification to the service management server 220 to enable continuous service through the load movement (S312). The service management server 220 receiving the service query the resource operation database 224, the spare IPTV set-top box device that stores the same split file as the IPTV set-top box device # 2 (120) that has a connection failure IPTV set-top box device # Recognize that K (130) (S322).

Subsequently, the service management server 220 instructs the IPTV set-top box apparatus #K 130 to continuously provide the split file # 2 whose download has been interrupted (S322). The IPTV set-top box device #K 130 downloads the split file # 2 stored by the IPTV set-top box apparatus #K 130 to the client terminal 300 from the portion after the failure (S340), and the client terminal ( 300 downloads the split file # 1 and the split file # 3, and downloads the split file # 2 from the IPTV set-top box device # 2 (120) and the IPTV set-top box device #K (130) to receive desired content. Complete the step (S350).

As described above, the IPTV set-top box apparatus 100 for distributing and storing the contents may minimize the bandwidth usage of the CDN network by downloading the divided file of the contents to the client terminal 300 through the uplink band of the ISP network. .

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that.

Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

The present invention can be usefully applied to a CDN service.

According to the IPTV set-top box device and server for providing a CDN solution of the present invention, and a method and system for providing a CDN solution using the same, a stable service can be provided by utilizing idle resources of users when providing a CDN service, improving security, It can save the network construction / operation cost.

1 is a schematic diagram of a CDN solution providing system according to an exemplary embodiment of the present invention.

FIG. 2 is a diagram illustrating an internal configuration of the IPTV set-top box device shown in FIG. 1.

3 is an internal configuration diagram of a service management server shown in FIG. 2.

4 is a data flowchart of a CDN solution providing method according to an embodiment of the present invention.

5 is a data flow diagram of a CDN solution providing method according to another embodiment of the present invention.

6 is a data flow diagram of a CDN solution providing method according to another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

100: IPTV set-top box device 101: hardware

102: hypervisor virtual platform 103: host operating system execution unit

104: guest operating system execution unit 105: IPTV service provider

106: CDN service provider 200: CDN service system

210: content providing server 220: service management server

300: client terminal

Claims (18)

In the CDN solution providing system for providing content corresponding to the content transmission request to the client terminal for sending a content transmission request through an ISP network, A service management server for dividing content into divided files and distributing and storing them in IPTV set-top box devices and transferring a workload to another IPTV set-top box device when a failure of the IPTV set-top box device occurs; Downloading and storing the first divided file of the content from the service management server, providing the first divided file to the client terminal in response to the content transmission request, and the connection failure occurs during the provision of the first divided file A first IPTV set-top box device for transmitting a failure notification to the service management server in order to move a workload; And As the connection failure of the first IPTV set-top box device occurs, the second IPTV downloads and stores the first divided file under the control of the service management server and continuously provides the first divided file to the client terminal. CDN solution providing system including a set-top box device. IPTV service providing unit for providing a broadcast service; And Storing the divided file of the content under the control of the service management server, and if the content transmission request is received from the client terminal connected to the ISP network, the divided file of the content is provided to the client terminal through the ISP network, and a connection failure occurs. If the IPTV set-top box device for providing a CDN solution comprising a CDN service provider for transmitting a failure notification to the service management server to move the workload. The method of claim 2, The CDN service providing unit IPTV set-top box apparatus for providing a CDN solution, characterized in that to download the divided file of the content to the client terminal through the uplink band of the ISP network. The method of claim 2, The CDN service providing unit IPTV set-top box apparatus for providing a CDN solution, characterized in that for uploading its own split file to the service management server with the notification of the failure. The method of claim 2, The IPTV service providing unit and the CDN service providing unit in the form of a hypervisor, each IPTV set-top box apparatus for providing a CDN solution, characterized in that it is built on a host operating system and a guest operating system. The method of claim 2, The CDN service providing unit IPTV set-top box apparatus for providing a CDN solution, characterized in that when the traffic load of the IPTV service provider is greater than the threshold value (OFF) is switched off (OFF). A file distribution register for dividing and dividing the content into the IPTV set-top box devices; An in-house resource manager that registers and manages resource operation information including device information and file information for each of the IPTV set-top box devices in association with the file distribution register; And If an access failure occurs in the IPTV set-top box device storing the divided file of the content, the workload is transferred to another IPTV set-top box device to continuously provide the divided file, and the changed resource management information is stored in the home resource. A service management server for providing a CDN solution including a load movement execution unit to inform the management. The method of claim 7, wherein The load movement execution unit receives a retransmission split file from an IPTV set-top box device having a connection failure, selects an IPTV set-top box device for transferring a workload in cooperation with the home resource management unit, and retransmits the selected IPTV set-top box device. Service management server for providing a CDN solution, characterized in that to provide a split file. The method of claim 7, wherein When the load movement execution unit receives the failure notification from the IPTV set-top box device, the IPTV set-top box device for communicating with the in-house resource management unit retrieves the divided file of the IPTV set-top box device that receives the failure notification, and transfers the workload. The service management server for providing a CDN solution, characterized in that for selecting and extracting the retrieved split file from the database or an external content providing server to the selected IPTV set-top box device. The method of claim 7, wherein The file distribution registration unit stores one divided file in advance to a plurality of IPTV set-top box devices, and the load movement execution unit communicates with the premises resource management unit when the failure notification is received from the IPTV set-top box device. Querying a preliminary IPTV set-top box device storing the same split file, and instructing to provide the split file to the inquired preliminary IPTV set-top box device. Registering contents of the first IPTV set-top box device to download and store the divided files of the contents from the service management server as contents are distributed and stored in divided files by a service management server; A downloading step of the first IPTV set-top box apparatus providing the split file to the client terminal through an ISP network when a content transmission request for the content is received from a client terminal connected to an ISP network; And When the connection failure between the first IPTV set-top box device and the client terminal occurs during the provision of the split file, the service management server is configured by the first IPTV set-top box device to allow the client terminal to continuously download the split file. And moving the workload to the second set top box device in association with the CDN solution providing method of the set top box device. The method of claim 11, wherein in the load movement step, When the first IPTV set-top box device provides a split file to the client terminal, if a connection failure occurs, the CDN solution providing method of the set-top box device to notify the failure by transmitting a failure notification to the service management server. . The method of claim 12, The first IPTV set-top box device is a CDN solution of the set-top box device, characterized in that the split file is provided to the second IPTV set-top box device by uploading the split file to the service management server together with the failure notification transmission How to Provide. The method of claim 11, IPTV set-top box devices for distributing and storing the content downloads the divided file of the content to the client terminal through the uplink band of the ISP network. A registration step of the service management server dividing and storing the divided files of the content to the IPTV set-top box devices; A failure occurrence step of recognizing a connection failure of the IPTV set-top box device by receiving the failure notification when the connection failure occurs in the IPTV set-top box device storing the divided file of the contents; And And a load movement step of allowing the service management server to transfer the workload of the IPTV set-top box device to another IPTV set-top box device to continuously provide the divided file of the contents. The method of claim 15, In the load movement step, the service management server receives a retransmission split file from the IPTV set-top box device in which a connection failure occurs, selects an IPTV set-top box device for transferring a workload, and divides the retransmission into the selected IPTV set-top box device. A method of providing a CDN solution for a server, comprising providing a file. The method of claim 15, In the load movement step, the service management server searches for a divided file of the IPTV set-top box device, selects an IPTV set-top box device for transferring a workload, and retrieves the divided file from its own database or an external content providing server. Extracting and downloading to the selected IPTV set-top box device. The method of claim 15, In the registration step, the service management server stores the divided file of the content to a plurality of IPTV set-top box devices, and when the failure notification is received in the load movement step, the service management server stores the same split file as the IPTV set-top box device in which the connection failure occurs. Querying a spare IPTV set-top box device, and instructing to provide the divided file to the searched spare IPTV set-top box device.

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