WO2012093835A2 - Apparatus for transmitting delay-allowance contents for mobile p2p service and method thereof - Google Patents

Abstract

The present invention provides an apparatus for transmitting delay-allowance contents for a mobile peer to peer (P2P) service and a method thereof, which store corresponding contents in a content storage by enabling a content supply device to transmit the corresponding contents to a content storage located in a wired network when a content request device is located within the coverage of a narrowband wireless network with expensive wireless transmission costs or a slow transmission speed, and which enables the content request device to download the contents through a wireless network of a cheap wireless transmission cost or a fast transmission speed by enabling a corresponding content request device to download the contents stored in the content storage when the content request device is moved to a broadband wireless network with cheap wireless transmission costs or a fast transmission speed. To this end, the apparatus for transmitting the delay-allowance contents for the mobile P2P service of the present invention includes: a content downloading unit for downloading the corresponding contents from the content supply device having the corresponding contents according to a request of "session setting for assigning a storage place for the contents to a content storage unit on the wired network" from the content request device located in the coverage of the narrowband wireless network; a content storage unit for storing the contents downloaded through the content downloading unit; and a content transmission unit for transmitting the contents stored in the content storage unit to the content request unit according to the content request from the content request device which is moved within the coverage of the broadband wireless network.

Description

Delay-tolerant content delivery device and method for mobile P2P service

The present invention relates to an apparatus and method for providing a mobile peer to peer (P2P) service, and more particularly, to providing a P2P service for a multi-mode terminal that can access the Internet through various wireless access networks. When the user terminal to be downloaded is located in narrow bandwidth wireless coverage, such as a 2G or 3G mobile communication network, which provides high content, the user terminal does not download the content directly from the peer terminal having the content to the user terminal. It downloads and saves the contents from the peer terminal to the content storage located in the wired network, and then uses the broadband wireless transmission technology when the user terminal moves to broadband wireless coverage such as Wi-Fi network in the future. The content stored in the content storage The present invention relates to a delay-tolerant content transmission device for a mobile P2P service and a method for downloading the same to a user terminal.

Existing P2P service targets fixed PC connected to wired network, so it doesn't consider bandwidth or transmission cost for transmission path, but only between peer terminals based on IP address of peer terminals. By estimating the distance of the data communication path, the content is downloaded from a peer terminal that is as close as possible (the smaller the number of nodes that a packet passes on the packet transmission path is, the smaller the distance is).

However, in the current situation where NAT (Network Address Translator) is widely used, it is difficult to accurately calculate the shortest transmission distance using only an IP address. Therefore, the Internet service provider (ISP) needs to provide a network topology. The standardization of technology to provide relevant information to P2P application service software and to calculate P2P traffic by calculating the shortest transmission path based on this information is the Internet Engineering Task Force's Application Layer Traffic Optimization (ALTO). It's going on in a working group.

However, the standardization in the ALTO working group basically considers wired P2P service. Therefore, it is assumed that the shorter the transmission cost between the peer terminals, the smaller the transmission cost, and the shortest transmission distance between the peer terminals is secured. The emphasis is on

However, this assumption does not apply to mobile P2P service. This is because the cost of data transmission varies greatly depending on which wireless access network is used. For example, a terminal A connected to a 3G network may access a Wi-Fi network operated by another provider rather than download content from a terminal B connected to the same 3G network operated by the same operator. This is because downloading content from a terminal called C is a cheaper way of downloading content.

Therefore, the prior art as described above has a problem that cannot be applied to a mobile P2P service, and it is an object of the present invention to solve such a problem.

Accordingly, the present invention provides content providing devices when the content requesting device is located in the coverage of a narrowband wireless network having a high wireless transmission rate or a slow transmission rate while the wireless P2P service provider connects the content requesting device to the content providing devices. Instruct the user to transfer the content to Content Storage located on a wired network, store the content in storage, and then move the content requesting device to coverage of a broadband wireless network that has a low wireless transmission rate or a high transmission speed. By downloading the content stored in the content storage to the content requesting device, the content requesting device to download the content over a wireless network with a low wireless transmission rate or high transmission speed, An object of the present invention is to provide a delay-tolerant content transmission device and a method for a B2P service.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention, which are not mentioned above, can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The apparatus of the present invention for achieving the above object is a delay-tolerant content transmission device for a mobile peer to peer (P2P) service, the content storage device wired from the content request device located in the coverage of the narrowband wireless network A content download unit for downloading the content from the content providing device storing the content according to the request of 'session setting to designate the content storage unit on the network'; A content storage unit for storing the content downloaded through the content download unit; And a content transmission unit for transmitting the content stored in the content storage unit to the content requesting device in response to a content request from the content requesting device moved to the coverage of the broadband wireless network.

In addition, another apparatus of the present invention for achieving the above object, in the delay-acceptable content transmission device for mobile P2P service, according to the content search request of the content requesting device, by using the meta information about the content related content A content meta information processing unit for searching; At least one content providing device storing the related content in response to a request for a session setting for designating a storage location of a content as a content storage unit on a wired network from a content requesting device located in a coverage of a narrowband wireless network. A terminal state monitoring unit collecting state information about the terminal; An access network traffic monitoring unit interworking with a management system of an access network of the content providing device to monitor traffic information of the access network; When the content requesting device is located in the coverage of the narrowband wireless network, the content requesting device downloads and stores the content from the content providing device and transmits the stored content to the content requesting device according to a content request of the content requesting device. A content storage unit; And a service controller configured to select the content providing device using at least one of the state information and the traffic information, and to manage a session between the content providing device and the content storage unit.

In addition, the method of the present invention for achieving the above object, in the delay-tolerant content transmission method for mobile P2P service, the content storage device from the content request device located in the coverage of the narrowband wireless network 'content of the storage on the wired network content; Downloading the corresponding content from the content providing device storing the corresponding content according to the request of 'session setting to the storage unit'; Storing the downloaded content; And transmitting the stored content to the content requesting device according to a content request from the content requesting device moved to the coverage of the broadband wireless network.

In addition, another method of the present invention for achieving the above object is, in the delay-accepted content transmission method for a mobile P2P service, the title information of the relevant content retrieved according to the content search request of the content requesting device to the content requesting device; Transmitting; At least one content providing device storing the related content in response to a request for a session setting for designating a storage location of a content as a content storage unit on a wired network from a content requesting device located in a coverage of a narrowband wireless network. Selecting the content providing device using at least one of state information and traffic information for an access network of the content providing device: while the related content is downloaded from the content providing device to the content storage unit via a session; Managing a session; And downloading the corresponding content stored in the content storage unit in response to a content download request from the content requesting device moved to the coverage of the broadband wireless network.

In addition, another apparatus of the present invention for achieving the above object, the content request device for using a mobile P2P service, Search request unit for requesting a content search to the mobile P2P service device; An information receiver configured to receive title information of related content searched according to the search request from the mobile P2P service apparatus; A session establishment request unit for requesting 'session establishment for designating a storage location of a content as a content storage unit on a wired network' to the mobile P2P service device as the content requesting device is located in a coverage of a narrowband wireless network; And a content download unit configured to download a corresponding content by establishing a session with the content storage unit as the content requesting device moves to coverage of a broadband wireless network.

In addition, another method of the present invention for achieving the above object, the method of using a mobile P2P service, the method comprising: requesting a content search to the mobile P2P service device; Receiving title information of related content retrieved according to the search request from the mobile P2P service device; Requesting, by the content requesting device located in the coverage of a narrowband wireless network, the mobile P2P service device to establish a session for designating a storage location of a content as a content storage unit on a wired network; And downloading, by the content requesting device moved to the coverage of the broadband wireless network, a session with the content storage unit to download the corresponding content.

As described above, when the content requesting device for content is located in a coverage of a narrowband wireless network having a high wireless transmission rate or a slow transmission rate, the content providing device having the content can transmit the content to a wired network. Store the content in the storage and request the content stored in the content storage when the device is moved to the coverage of a broadband wireless network that has a low wireless transmission rate or a high transmission speed. By downloading to the device, there is an effect that allows the content requesting device to download the content through a wireless network having a low wireless transmission rate or a high transmission speed.

In addition, according to the present invention, a mobile user who wants to download P2P content has an advantage of downloading the content to the terminal through a broadband wireless network such as a Wi-Fi network that does not incur a wireless transmission fee.

In addition, according to the present invention, by allowing the content to be shared according to at least one of the status information of the user device connected to the wireless network and the traffic information of the wireless network, it is possible to distribute the load of the network and ensure the reliability of the content transmission and reception It has an effect.

In addition, according to the present invention, the content can be shared according to the data transmission cost of the access network of the user device, there is an effect that can provide a mobile P2P service more economically.

1 is a view for explaining a mobile P2P service system according to an embodiment of the present invention;

2 is a view for explaining a delay-accepted content transmission method for a mobile P2P service according to an embodiment of the present invention;

3 is a view for explaining a delay-accepted content transmission apparatus for a mobile P2P service according to an embodiment of the present invention;

4 is another diagram for explaining a delay-accepted content transmission method for a mobile P2P service according to an embodiment of the present invention;

5 to 8 are diagrams for explaining a delay-accepted content transmission method for a mobile P2P service according to a specific embodiment of the present invention.

The above objects, features, and advantages will become more apparent from the detailed description given hereinafter with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention pertains may share the technical idea of the present invention. It will be easy to implement. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the specification, when a part is "connected" to another part, this includes not only a "directly connected" but also a "electrically connected" between other elements in between. In addition, when a part is said to "include" or "include" a certain component, it means that it may further include or have other components, without excluding other components, unless specifically stated otherwise. .

The present invention relates to a mobile P2P service device and a method for sharing content among user devices connected to a wireless network, and to solve the above-mentioned problems and provide a more effective and economical mobile P2P service. Invention.

The present invention selects an upload user device using at least one of the state information of the user device storing the requested content and the traffic information for the access network of the user device according to a request of the download user device to download the content. . The content uploaded from the selected upload user device is downloaded to the download user device through a session established between the download user device and the upload user device. Here, the status information may include one or more of available access network information of the user device, transmission unit price information of the access network, remaining battery information of the user device, and available base station information of the user device.

The present invention can provide a mobile P2P service more economically by selecting the upload user device using the state information of the user device and can ensure the reliability of content transmission and reception. For example, the present invention can use the state information of the user device to select the upload user device where the transmission cost of the access network is the most economical. In addition, the present invention may select another user device as the upload user device when the network connection of the uploading user device selected by using the state information of the user device is terminated. That is, the present invention can continuously select and monitor a new upload user device when the state of the upload user device is changed by continuously monitoring and using state information of the user device storing the requested content.

In addition, the present invention can utilize idle radio resources and reduce the load on the wireless network by using traffic information for the access network of the user device storing the requested content. That is, according to the present invention, by selecting the user device connected to the network with less traffic among the user devices storing the requested content as the upload user device, the P2P traffic can be distributed and the load of the wireless network can be reduced.

In addition, according to the present invention, when the user terminal that wants the content is located in the coverage of a wireless network which has a high transmission rate or a slow transmission speed such as a 2G or 3G mobile communication network, the user terminal from the peer terminal having the content or the like to the user terminal. Instead of downloading the content directly, the peer terminal having the content transmits the content to the content storage located in the wired network to store the content, and in the future, the user terminal is connected to the Wi-Fi network. The content stored in the content storage can be transmitted to the corresponding terminal when the access fee is low or the coverage of the wireless network has a high transmission speed.

At this time, the process of downloading the content stored in the content storage to the user terminal, when the user terminal is moved to broadband wireless coverage, such as Wi-Fi (Wi-Fi) network, the user terminal automatically recognizes and downloads, or the user It can also be downloaded by selecting the desired wireless access network at a desired point in time. In the latter case, users can store P2P content in the content storage like a web hard disk and use it as a storage space where users can download or directly access the content when needed.

As a result, a wireless network operator can provide a mobile P2P service at a low price without excessive network investment, and a user of a user device can use the mobile P2P service at a low price, thereby enabling the mobile P2P service to be activated.

Meanwhile, in the present invention, the user device includes a terminal, and the user device may be represented as a wireless terminal or a peer terminal in some cases.

1 is a view for explaining a mobile P2P service system according to an embodiment of the present invention.

As shown in FIG. 1, the mobile P2P service system 100 according to the present invention includes a mobile P2P service device 110 and user devices 130, 140, and 150. In FIG. 1, three user devices 130, 140, 150, and user equipment are connected to different wireless networks (HSPA, WiMAX, Wi-Fi), respectively, and a wireless network to which the user devices 130, 140, and 150 are connected. And a case in which the mobile P2P service device 110 is connected by a Next Generation Network as one embodiment. In addition, the present invention can be applied to various networks such as an IP Multimedia Subsystem (IMS) -based Contents Delivery Network (CDN).

The mobile P2P service device 110 may request the download user device among the user devices 130, 140, and 150 connected to the wireless network to request a download user device. Select the upload user device to upload the content. The mobile P2P service device 110 selects the upload user device using one or more of state information of the user device storing content requested from the download user device and traffic information for the access network of the user device. The content uploaded from the upload user device is downloaded to the download user device through a session established between the download user device and the upload user device. The user devices 130, 140, and 150 may be download user devices or upload user devices.

The mobile P2P service device 110 includes a content meta information processing unit 111, a terminal state monitoring unit 113, a user equipment monitoring function 113, an access network traffic monitoring unit 115, and an access network traffic monitoring unit 115. Function, ATMF), Mobile P2P Service Control Function (MPSF), Super Peer Function (SPF), Content Storage Unit 112 (Content Storage Function, CSF) and External Interface Unit (121, External Interface Function, EIF). In addition, the user apparatuses 130, 140, and 150 may include a contents downloading function (CDF) and a contents uploading function (CUF).

First, the mobile P2P service device 110 will be described, and the user devices 130, 140, and 150 will be described later.

The content meta information processing unit 111 manages meta information on user content (eg, a photo, a file, a video clip, etc.). The content meta information processing unit 111 may receive and store meta information from a user device connected to a wireless network. When the user transmits a keyword or metadata-based content search request to the mobile P2P service controller 117 by using the user device, the mobile P2P service controller 117 transmits the request to the content meta information processor 111. Here, the user device requesting the content search is the aforementioned download user device.

The content meta-information processing unit 111 searches for a search request-related content and transmits the title (title) of the related content and user ID information of peer terminals storing the content to the mobile P2P service control unit 117. The mobile P2P service control unit 117 transmits the title information of the content to the user device requesting the content search, and the user device displays the title information on the screen of the user device for the user to view. When the user determines to download the content and inputs the content download command to the user device, the user device transmits the content download command to the mobile P2P service control unit 117.

When the mobile P2P service control unit 117 receives a content download command from the user device, that is, when a P2P session establishment request for content download is received from the user device, the mobile P2P service control unit 117 receives the request-related content. In order to confirm the state of the stored peer terminals, the terminal state monitoring unit 113 requests status information of peer terminals storing related content. Alternatively, the mobile P2P service control unit 117 may be notified of the search result of the content meta information processing unit 111 and request the state information to the terminal state monitoring unit 113. The terminal state monitoring unit 113 collects state information including information of an access network to which the user device can access, transmission unit price information of the access network, etc. from the user device and transmits the collected state information to the mobile P2P service control unit 117. do.

The mobile P2P service control unit 117 utilizes state information when selecting a peer terminal, that is, at least one or more upload user devices, to provide content to a download user device. For example, if two user devices have the same content, the first terminal can access the HSPA network with high transmission cost and low transmission rate, and the second terminal has low transmission cost and high transmission speed. If it is possible to connect to a Wi-Fi network, in terms of cost, it may be efficient for a second terminal that can be connected to a Wi-Fi network to provide content. In addition, when the user device has multiple wireless interfaces such as HSDPA and Wi-Fi network, a terminal located within the coverage of the AP of the Wi-Fi network provides content through the Wi-Fi interface. It is economically efficient. As described above, the state information collected from the peer terminals that store the content is available by the terminal state monitoring unit 113, available access network information of the user device, transmission unit cost information of the access network, and remaining of the user device. One or more of battery information and available base station information of the user device may be included, but need not be limited to four.

On the other hand, in the above described the case where the terminal status monitoring unit 113 requests the status information to the user device has been described as an embodiment, the status information is periodically transmitted from the user device to the terminal status monitoring unit 113 or the user device When the state of the device may be transmitted from the user device to the terminal state monitoring unit 113.

After the mobile P2P service control unit 117 receives the state information on the user device storing the content from the terminal state monitoring unit 113, the mobile P2P service control unit 117 can access the user device storing the content. Requests the traffic situation information for the access network to the access network traffic monitoring unit 115.

The access network traffic monitoring unit 115 may check the traffic state of the corresponding access network through interworking with network equipment such as a network management system (NMS) of each access network. After receiving the traffic information of the access network from the access network traffic monitoring unit 115, the mobile P2P service control unit 117 uses a peer to provide content to the download user device using at least one of the traffic information and the state information. Peer) Select a terminal. In this case, the mobile P2P service control unit 117 may select a user device located in the coverage of the base station having few users as the upload user device.

In order to be selected as an upload user device, it is necessary for the base station where the user device is located to have a certain amount of idle radio resources available for general service purposes other than P2P service, which is due to the P2P traffic. This is to prevent exhaustion. In addition, the access network traffic monitoring unit 115 continuously monitors the traffic situation of the base station for the upload user device providing the content while the content is transmitted to the download user device. If the available idle radio resource of the base station is less than or equal to the preset threshold, the access network traffic monitoring unit 115 informs the mobile P2P service control unit 117 of this fact, and the mobile P2P service control unit 117 stores the content. Reselect the upload user device to provide the.

Meanwhile, in the case of a user device storing popular content, since the same content can be repeatedly uploaded, a battery and a radio resource of the user device can be consumed. The mobile P2P service control unit 117 monitors popular content with a high number of downloads, and if found popular content, the mobile peer-to-peer service unit 119 instructs the super peer unit 119 to download the corresponding content from the user device storing the popular content. To be stored in the super peer unit 119. The super peer unit 119 may download the content in the same manner as the download user device downloads the content, and the content is uploaded to another download user device requesting the content in the same manner as the upload user device uploads the content. You can upload

On the other hand, if the user device that wants to download the content is located in the coverage of a narrow bandwidth wireless network with a low transmission rate or a high wireless transmission rate, the mobile P2P service control unit 117 allows the user device storing the content to display the content. The content may be stored in the content storage unit 112 by transmitting to the branch unit 112. In the future, when the user terminal moves to the coverage of a broadband wireless network with a high transmission speed or a low wireless transmission rate, the user device automatically recognizes it or selects an access wireless network at a desired time and transfers the contents to the content storage unit. It can be downloaded from the 112 to the user terminal.

On the other hand, as described above, the mobile P2P service control unit 117 controls the mobile P2P service as a whole. In summary, the mobile P2P service control unit 117 may provide the following functions.

First, the mobile P2P service control unit 117 retrieves the requested content through interworking with the content meta information processing unit 111 and retrieves ID information of peer terminals storing the request related content.

Second, the mobile P2P service control unit 117 collects state information of peer terminals that store the requested content through interworking with the terminal state monitoring unit 113.

Third, the mobile P2P service control unit 117 monitors the traffic situation of the access network through interworking with the access network traffic monitoring unit 115.

Fourth, the mobile P2P service control unit 117 selects a terminal to provide the content, that is, at least one or more uploading user devices, from among peer terminals storing the requested content. At this time, the mobile P2P service control unit 117 allows P2P traffic to be evenly distributed in the wireless network, and utilizes a base station in which a lot of idle radio resources remain.

Fifth, the mobile P2P service control unit 117 may manage the P2P session during the download through continuous monitoring of the traffic of the access network, and may reset the P2P session during the download when the traffic is congested in the access network. In addition, when the upload user device providing the content is out of coverage of the access network while the content is downloaded to the download user device, the download user device may detect and notify the mobile P2P service controller 117. In this case, the mobile P2P service controller 117 may newly select an upload user device to provide the content and reset the ongoing P2P session.

Sixth, the mobile P2P service control unit 117 allows the upload user device to avoid uploading the same content repeatedly by allowing the mobile P2P service device 110 to store popular content, which frequently occurs in content download. Popular content may be stored in the super peer unit 119.

Seventh, the mobile P2P service control unit 117 may be configured to cause a user device having content to download the content if the user device that wants to download the content is located in a coverage of a narrowband wireless network having a low transmission speed or a high wireless transmission fee. The corresponding content may be stored in the content storage unit 112 by transmitting to the 112.

The external interface 121 provides an interface for communicating with a user device and a network management system (NMS) of each access network.

Hereinafter, the user apparatuses 130, 140, and 150 will be described. The user devices 130, 140, and 150 include a content download unit CDF and a content upload unit CUF.

The content download unit transmits a content search command including a keyword or meta information input by the user to the mobile P2P service control unit 117, and in response thereto, the content download unit transmits content related information transmitted by the mobile P2P service control unit 117 to the user device. Receive and display for viewing by the user. Here, the content related information may include title information of the searched content.

The content download unit receives a content download command of the user and transmits a P2P session establishment request message to the mobile P2P service control unit 117. The content download unit session setting information of the uploading user device capable of providing the content transmitted from the mobile P2P service control unit 117 in response to the P2P session establishment request (for example, ID, IP address, etc. of a peer terminal required for P2P session establishment). Receive and establish a P2P session with the upload user device and download content from the upload user device. Here, the upload user device may be selected by the mobile P2P service device 110.

In addition, if the uploading user device does not transmit the content for a predetermined time while the content downloading unit downloads the content, the content downloading unit may determine that the uploading user device is out of wireless coverage and may notify the mobile P2P service control unit 117 of this. When a new upload user device is selected in the mobile P2P service control unit 117 in response to the notification, the content download unit may establish a P2P session with the new upload user device and continue to download the content.

If it is determined that the content can be downloaded through a plurality of uploading user devices that transmit the content even when some uploading user devices of the plurality of uploading user devices providing the content to the download user device do not transmit the content. The content download unit may reconfigure the existing P2P session by itself without notifying the mobile P2P service controller 117 of the upload user device that is out of wireless coverage.

For example, the content download unit may download a content having a total capacity of 100 MBytes composed of a plurality of pieces of data at the time of initial P2P session establishment. If the content download unit downloads 100 MByte content consisting of 100 pieces of 1 Mbyte size, the upload user device A can be configured to send the first to the 20th pieces, and the upload user device B is the 21st. To send the 40th fragment, upload user device C can be set to send the 41st to 60th piece, upload user device D can be set to send the 61st to 80th piece, upload user device E can be set to transmit the 81st through 100th fragments.

When 20% of the content has been transferred, for example, upload user device A has sent the first to fourth pieces, upload user device B has sent pieces 21 to 24, and upload user Device C sends pieces 41 to 44, upload user device D sends pieces 61 to 64, and uploads user device E sends pieces 81 to 84. At one point, if upload user device A stops transmitting content, the content downloader uploads the pieces of data that were supposed to be transmitted from upload user device A by resetting the P2P session with upload user devices B, C, D, and E. Can be downloaded from, C, D, E. For example, upload user device B additionally 5 to 8, upload user device C additionally 9 to 12, upload user device D additionally 13 to 16, and upload user device E additionally 17 Can be set to send content pieces 20 times.

The operation of dividing a piece into pieces may be performed at a time when the user device initially stores the pieces of content in memory. When dividing the pieces into pieces, the size of the pieces may vary depending on the characteristics of the pieces of content.

When the user device to download the content is located in the coverage of a narrowband wireless network having a low transmission rate or a high wireless transmission fee, the content download unit receives a user's content download command and sends a P2P session to the mobile P2P service control unit 117. When the setting request message is transmitted, a storage location of the content may be designated as the content storage unit 112. The mobile P2P service control unit 117 transmits session setting information (eg, ID, IP address, etc. of a peer terminal required for P2P session establishment) of the upload user device capable of providing the content to the content storage unit 112 and receives the content. One content storage unit 112 establishes a P2P session with the upload user device and downloads content from the upload user device.

The content uploader may include a terminal state manager and a content and delivery manager.

The terminal state management unit may transmit the state information to the terminal state monitoring unit 113 periodically or when there is a change in the state of the user device. In addition, the content and delivery management unit may notify the content meta information processing unit 111 when the content for the P2P service is newly added or deleted in the memory of the user device. In addition, the terminal state management unit may transmit the state information of the user device to the terminal state monitoring unit 113 according to the request of the terminal state monitoring unit 113, the content and transmission management unit in response to the request of the content meta information processing unit 111 Accordingly, the content related meta information may be transmitted to the content meta information processing unit 111.

When the content upload unit communicates with the terminal state monitoring unit 113 and the content meta information processing unit 111, as illustrated in FIG. 1, the content upload unit may communicate with the external interface unit 121 and the mobile P2P service control unit 117. . However, this is a description of one embodiment, and depending on the implementation method, the content upload unit may communicate with the terminal state monitoring unit 113 and the content meta-information processing unit 111 through the external interface unit 121. Direct communication may be performed without passing through the P2P service control unit 117.

Meanwhile, the above-described mobile P2P service apparatus and user terminal may be configured in various ways according to an implementation manner, but include the technical features of the above-described mobile P2P service system. 2 to 5, a mobile P2P service method and apparatus, a mobile P2P service using method, and a user device for using the mobile P2P service will be described in detail with reference to FIG. 1.

2 is a diagram for describing a delay-accepted content transmission method for a mobile P2P service according to an embodiment of the present invention. In FIG. 2, the mobile P2P service method of the mobile P2P service device is described as an embodiment.

In step S201, the mobile P2P service device transmits title information of the related content searched to the download user device according to the content search request of the download user device. More specifically, step S201, by using the meta information about the content, searching for the title of the related content and the user ID (or URL of the content providing device, etc.) of the user device storing the related content, and downloading the title information. And transmitting to the device.

In step S203, the mobile P2P service device stores at least relevant content according to a session establishment request (including information specifying a storage location of the content as a content storage unit) of the download user device located in the coverage of the narrowband wireless network. The upload user device is selected using one or more of status information of one or more user devices and traffic information for the access network of the user device. More specifically, in step S203, in response to a session establishment request for designating a storage location of the content as the content storage unit, collecting state information from a user device storing related content, interworking with a management system of an access network, and providing traffic information. Monitoring, and selecting an upload user device using one or more of state information and traffic information.

In this case, the mobile P2P service device may monitor traffic information even when a session between the upload user device and the content storage unit is set, and may reselect the upload user device according to the traffic information in the session setting state. That is, the mobile P2P service device monitors the traffic situation of the access network even while the content is downloaded from the uploading user device to the content storage unit.

Meanwhile, in step S203, the state information may be periodically transmitted from the user device to the mobile P2P service device. Alternatively, the state information may be transmitted from the user device to the mobile P2P service device when the state of the user device changes.

In step S205, the mobile P2P service device manages a session between the upload user device and the content storage unit. When the related content is downloaded from the uploading user device to the content storage unit according to a download request of the content storage unit of the user device, the mobile P2P service device manages the session and resets the session according to the terminal information and traffic information. Can be.

In step S207, the mobile P2P service device downloads the corresponding content stored in the content storage unit to the download user device according to the content download request from the download user device moved to the coverage of the broadband wireless network.

As described above, the content storage unit 112 downloads content from content provider terminals on behalf of the content requester terminal when the content requester terminal is located in the coverage of a narrowband wireless network having a high wireless access fee or a low transmission rate. The content is stored and transmitted to the content requester terminal when the content requester terminal requests.

On the other hand, the mobile P2P service method according to the present invention may further include the step of pre-store the preferred content according to the popularity of the content. That is, the mobile P2P service device may download and store the preferred content from the upload user device, and provide the content to the download user device of the user when there is a user device requiring the content.

3 is a diagram illustrating a delay-tolerant content transmission device for a mobile P2P service according to an embodiment of the present invention. The mobile P2P service device of FIG. 3 corresponds to the mobile P2P service device described with reference to FIG. 1.

For example, the mobile P2P service apparatus according to the present invention includes a content meta information processing unit 301, a terminal state monitoring unit 303, an access network traffic monitoring unit 305, a service control unit 307, and a content storage unit 311. Include.

The content meta information processing unit 301 searches for related content using meta information about the content according to the content search request of the download user device. The terminal state monitoring unit 303 stores the related content in response to a request for 'session setting for designating a storage location of the content as a content storage unit on the wired network' from the download user device located in the coverage of the narrowband wireless network. Collect state information of at least one user device. The access network traffic monitoring unit 305 monitors the traffic information of the access network by interworking with the management system of the access network of the user device that stores the related content. The service controller 307 selects an upload user device using one or more of state information and traffic information, and manages a session between the upload user device and the content storage unit 311. If the download user device is located in the coverage of a narrowband wireless network having a high wireless access fee or a low transmission rate, the content storage unit 311 may retrieve content from the upload user device (or a content providing system, etc.) on behalf of the download user device. Download and store the content, and transmit the content to the download user device when the download user device requests a content.

In this case, the access network traffic monitoring unit 305 may monitor the traffic information while the related content is transferred from the upload user device to the content storage unit 311, and the service control unit 307 may monitor the upload user device according to the traffic information. You can reselect. The service controller 307 may reselect the upload user device when the upload user device is out of coverage of the access network.

As another example, the mobile P2P service apparatus according to the present invention includes a content storage unit 311 including a content download unit, a content storage unit, and a content transmission unit.

That is, as the content storage unit 311 receives a request for 'session setting for designating a storage location of content as a content storage unit on a wired network' from a content requesting device (downloading user device) located in the coverage of a narrowband wireless network, A content download unit for downloading the content from a content providing device (such as an upload user device or a content providing system) storing the content, a content storage unit for storing the content downloaded through the content download unit, and broadband wireless And a content transmission unit for transmitting the content stored in the content storage unit to the content requesting device according to the content request from the content requesting device (downloading user device) moved to the coverage of the network.

Meanwhile, the mobile P2P service apparatus according to the present invention may further include a super peer unit 309 for monitoring the popularity of the content and downloading the preferred content. The downloaded content may be stored in the super peer unit 309.

4 is another diagram for explaining a delay-accepted content transmission method for a mobile P2P service according to an embodiment of the present invention. In FIG. 4, the method of using the mobile P2P service of the user device described with reference to FIG. 1 is described as an embodiment.

In operation S401, the user device requests a content search from the mobile P2P service device. In step S403, the user device receives title information of the related content retrieved according to the search request from the mobile P2P service device. In operation S405, the user device located in the coverage of the narrowband wireless network requests the session for specifying the storage location of the content to the content storage unit on the wired network to the mobile P2P service device for downloading related content. The user device moved to the coverage of the broadband wireless network in step S407 establishes a session with the content storage unit and downloads the corresponding content.

In this case, the mobile P2P service device uses at least one of state information of each user device and traffic information of an access network for at least one or more user devices (or a content providing system, etc.) storing related content as described above. Select the upload user device.

Meanwhile, the method of using the mobile P2P service according to the present invention may further include notifying the termination of the upload user device to the mobile P2P service device when the access of the upload user device is terminated. The mobile P2P service device may reselect the uploading user device according to the notification of the user device.

In FIG. 4, the present invention has been described by a process point of view, but each step constituting a method for using a mobile P2P service according to the present invention can be easily identified by a device point of view. That is, the user device for using the mobile P2P service according to the present invention includes a search request unit for requesting a content search to the mobile P2P service device and information for receiving title information of the related content retrieved according to the search request from the mobile P2P service device. As the receiver is located in the coverage of the narrowband wireless network, a session establishment request unit for requesting 'session setting for designating a storage location of a content storage unit on a wired network' to a mobile P2P service device for downloading related contents; And a content download unit configured to download a corresponding content by establishing a session with the content storage unit as the mobile station moves to the coverage of the broadband wireless network.

5 to 8 are diagrams for explaining a delay-accepted content transmission method for a mobile P2P service according to a specific embodiment of the present invention. In detail, FIG. 5 is a diagram for describing a traffic management flow for a mobile P2P service, and FIG. 6 is a diagram for explaining management of radio outage of a content of an upload user device. 7 is a diagram for explaining termination of a mobile P2P service. 8 is a diagram illustrating a signal flow for providing a mobile P2P service using storage contents. This will be described in the order of FIGS. 5 to 8.

First, in FIG. 5, the content download unit 501 of the download user device requests a content search from the mobile P2P service control unit 503 of the mobile P2P service device according to the content search request (S501) of the user (S503). The content meta-information processing unit 505 of the mobile P2P service device searches for the requested related content, information about at least one or more user devices storing the related content, for example, title information of the related content and ID information of the user device. To the mobile P2P service control unit 503 (S505). The mobile P2P service control unit 503 transmits the title information of the related content to the content download unit 501 in response to the search request (S507), and the content download unit 501 is mobile according to the user's download request (S509). The P2P service control unit 503 requests a P2P session establishment (S511). The mobile P2P service control unit 503 requests the terminal state monitoring unit 507 for the state information of the user device that stores the related content, and receives the state information from the terminal state monitoring unit 507 (S513). The mobile P2P service control unit 503 requests the access network traffic monitoring unit 509 for traffic state information on an access network, that is, a point of access (POA) of the user device that stores related content, and access network traffic. The traffic state information is received from the monitoring unit 509 (S515). The mobile P2P service control unit 503 selects at least one upload user device (CUP) using the state information and the traffic state information of the user device (S517), and the download user device is required for establishing a session with the upload user devices. The information is transmitted to the content download unit 501 (S519). The content download unit 501 establishes a session with the upload user device and starts downloading (S521).

While the content is downloaded to the content download unit 501, the mobile P2P service control unit 503 requests the traffic state monitoring for the access network of the upload user device to the access network traffic monitoring unit 509 (S523). The access network traffic monitoring unit 509 monitors the traffic state of the upload user device for the access network (S525) and determines whether the traffic is congested (S527). If it is determined that the traffic congestion state, the access network traffic monitoring unit 509 notifies the traffic congestion state to the mobile P2P service control unit 503 (S529), and the mobile P2P service control unit 503 reselects the upload user device ( S531). The mobile P2P service control unit 503 requests the content download unit 501 to reset the P2P session for the reselected upload user device (S533). The content download unit 501 resets the session with the reselected upload user device and proceeds to download with the reselected upload user device (S535).

While the content is downloaded to the content download unit 501, the mobile P2P service control unit 503 requests the access network traffic monitoring unit 509 to monitor the traffic state of the access network of the upload user device (S537). On the other hand, if it is determined that the traffic congestion state in step S527, the access network traffic monitoring unit 509 continuously monitors the traffic state for the access network.

In FIG. 6, when the content download unit 501 detects a content transmission stop of the upload user device (S601), the content download unit 501 notifies the mobile P2P service control unit 503 of the content transmission stop of the upload user device. (S603). The mobile P2P service control unit 503 requests the state information and the traffic state information of the user device to the terminal state monitoring unit 507 and the access network traffic monitoring unit 509 to reselect the uploading user device (S605, S607). The upload user device is selected using the state information and the traffic state information of the user device (S609). Thereafter, the mobile P2P service control unit 503 requests the content download unit 501 (S611) to request a P2P session re-establishment for the reselected upload user device. The content download unit 501 resets the session with the reselected upload user device and proceeds to download with the reselected upload user device (S613).

While the content is downloaded to the content download unit 501, the mobile P2P service control unit 503 requests the traffic state monitoring for the access network of the upload user device to the access network traffic monitoring unit 509 (S615), and the network traffic. The monitoring unit 509 returns to reference point A of FIG. 5 and proceeds to steps S525 and S527.

In FIG. 7, when the content download is completed (S701), the content download unit 501 notifies the completion of the completion to the mobile P2P service control unit 503 (S703). The mobile P2P service control unit 503 requests the access network traffic monitoring unit 509 to stop the traffic state monitoring (S705), and the access network traffic monitoring unit 509 stops the traffic state monitoring (S707).

In FIG. 8, the content download unit 501 of the download user device requests a content search from the mobile P2P service controller 503 of the mobile P2P service device (S803) according to a content search request (S801) of the user. The content meta-information processing unit 505 of the mobile P2P service device searches for the requested related content, information about at least one or more user devices storing the related content, for example, title information of the related content and ID information of the user device. To the mobile P2P service control unit 503 (S805). The mobile P2P service control unit 503 transmits title information of related content to the content download unit 501 in response to the search request (S807), and the content download unit 501 is mobile according to the user's download request (S809). The P2P service control unit 503 requests to store the content in the content storage (S811). The mobile P2P service control unit 503 requests the terminal state monitoring unit 507 for the state information of the user device that stores the related content, and receives the state information from the terminal state monitoring unit 507 (S813). The mobile P2P service control unit 503 requests the access network traffic monitoring unit 509 for traffic state information on an access network, that is, a point of access (POA) of the user device that stores related content, and access network traffic. The traffic state information is received from the monitoring unit 509 (S815). The mobile P2P service control unit 503 selects at least one upload user device (CUP) using the state information and the traffic state information of the user device (S817), and the download user device is required for establishing a session with the upload user devices. Information is transmitted to the content storage unit 508 (S819). The content storage unit 508 establishes a session with the upload user device and starts downloading (S821).

While the content is downloaded to the content storage unit 508, the mobile P2P service control unit 503 requests the traffic state monitoring of the access network of the upload user device to the access network traffic monitoring unit 509 (S823). The access network traffic monitoring unit 509 monitors the traffic state of the access network of the upload user device in operation S825 and determines whether the traffic is congested in operation S827. When it is determined that the traffic congestion state, the access network traffic monitoring unit 509 notifies the traffic congestion state to the mobile P2P service control unit 503 (S829), and the mobile P2P service control unit 503 repeats the processes S813 to S817. Reselect the upload user device (S831). The mobile P2P service control unit 503 requests the content storage unit 508 to reset the P2P session for the reselected upload user device (S833). The content storage unit 508 resets the session with the reselected upload user device and proceeds to download with the reselected upload user device (S835).

While the content is downloaded to the content storage unit 508, the mobile P2P service control unit 503 requests the traffic state monitoring of the access network of the uploading user device to the access network traffic monitoring unit 509 (S837). On the other hand, if it is not determined that the traffic congestion state in step S827, the access network traffic monitoring unit 509 continuously monitors the traffic state for the access network.

On the other hand, the delay-accepted content transmission method for a mobile P2P service according to the present invention as described above may be implemented in the form of program instructions that can be executed by various computer means may be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. The medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, although the present invention has been described with reference to the limited embodiments and the drawings, the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains should understand the present invention. Various substitutions, modifications, and changes can be made without departing from the spirit.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

The present invention can be used for a mobile peer to peer (P2P) service.

Claims (12)

1. In the delay-tolerant content delivery device for a mobile peer to peer (P2P) service,

   In response to a request for a session setting that designates a storage location of a content storage unit on a wired network from a content requesting device located in a coverage of a narrowband wireless network, the content is downloaded from a content providing device storing the content. Content download unit for;

   A content storage unit for storing the content downloaded through the content download unit; And

   Content transmission unit for transmitting the content stored in the content storage to the content requesting device in response to a content request from the content requesting device moved to the coverage of the broadband wireless network

   Delay-accepted content transmission device comprising a.
2. The method of claim 1,

   Providing at least one or more of the contents storing the related content in response to a request for 'session setting designating a storage location of the content as a content storage unit on a wired network' from the content requesting device located in the coverage of the narrowband wireless network. Terminal status monitoring unit to collect status information about the device

   Delay-accepted content transmission device further comprising.
3. A delay-tolerant content transmission device for a mobile P2P service,

   A content meta-information processing unit for searching for related content by using meta information about the content according to a content search request of the content requesting apparatus;

   At least one content providing device storing the related content in response to a request for a session setting for designating a storage location of a content as a content storage unit on a wired network from a content requesting device located in a coverage of a narrowband wireless network. A terminal state monitoring unit collecting state information about the terminal;

   An access network traffic monitoring unit interworking with a management system of an access network of the content providing device to monitor traffic information of the access network;

   When the content requesting device is located in the coverage of the narrowband wireless network, the content requesting device downloads and stores the content from the content providing device and transmits the stored content to the content requesting device according to a content request of the content requesting device. A content storage unit; And

   A service control unit for selecting the content providing device using at least one of the state information and the traffic information, and managing a session between the content providing device and the content storage unit;

   Delay-accepted content transmission device comprising a.
4. The method of claim 3, wherein

   The access network traffic monitoring unit,

   Monitor the traffic information while the related content is delivered from the content providing device to the content storage unit,

   The service control unit,

   And reselect the content providing device according to the traffic information.
5. The method of claim 3, wherein

   The service control unit,

   And reselect the content providing device when the content providing device is out of coverage of the access network.
6. The method according to any one of claims 1 to 5,

   Super peers that monitor the popularity of content and download preferred content

   Delay-accepted content transmission device further comprising.
7. In the delay-tolerant content transmission method for a mobile P2P service,

   In response to a request for a session setting that designates a storage location of a content storage unit on a wired network from a content requesting device located in a coverage of a narrowband wireless network, the content is downloaded from a content providing device storing the content. Doing;

   Storing the downloaded content; And

   Transmitting the stored content to the content requesting device according to a content request from the content requesting device moved to the coverage of the broadband wireless network.

   Delay-accepted content transmission method comprising a.
8. The method of claim 7, wherein

   Providing at least one or more of the contents storing the related content in response to a request for 'session setting designating a storage location of the content as a content storage unit on a wired network' from the content requesting device located in the coverage of the narrowband wireless network. Collecting status information about the device

   Delay-accepted content transmission method further comprising.
9. In the delay-tolerant content transmission method for a mobile P2P service,

   Transmitting title information of the related content retrieved according to a content search request of a content requesting device to the content requesting device;

   At least one content providing device storing the related content in response to a request for a session setting for designating a storage location of a content as a content storage unit on a wired network from a content requesting device located in a coverage of a narrowband wireless network. Selecting the content providing device using at least one of state information and traffic information for an access network of the content providing device:

   Managing the session while the related content is downloaded from the content providing device to the content storage unit via a session; And

   Downloading the corresponding content stored in the content storage unit according to a content download request from the content requesting device moved to the coverage of the broadband wireless network;

   Delay-accepted content transmission method comprising a.
10. The method according to any one of claims 7 to 9,

    Pre-saving the preferred content according to the popularity of the content

    Delay-accepted content transmission method further comprising.
11. In the content request device for using a mobile P2P service,

    A search request unit requesting a content search to the mobile P2P service device;

    An information receiver configured to receive title information of related content searched according to the search request from the mobile P2P service apparatus;

    A session establishment request unit for requesting 'session establishment for designating a storage location of a content as a content storage unit on a wired network' to the mobile P2P service device as the content requesting device is located in a coverage of a narrowband wireless network; And

    As the content requesting device moves to the coverage of the broadband wireless network, a content download unit for setting a session with the content storage unit to download the corresponding content

    Content request device comprising a.
12. In the method of using a mobile P2P service,

    Requesting content retrieval from a mobile P2P service device;

    Receiving title information of related content retrieved according to the search request from the mobile P2P service device;

    Requesting, by the content requesting device located in the coverage of a narrowband wireless network, the mobile P2P service device to establish a session for designating a storage location of a content as a content storage unit on a wired network; And

    The content requesting device moved to the coverage of the broadband wireless network establishes a session with the content storage unit to download the corresponding content.

    Mobile P2P service usage method comprising a.

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