KR20160090521A - Method for providing streaming service through device-to-device communication, server and system - Google Patents

Abstract

A method for providing a streaming service comprises: a step of receiving a streaming request signal of a video from a first device; a step of determining whether the identical video is streamed to a second device included in a device-to-device (D2D) group in which the first device is included; a step of generating a modified play list to allow the first device and the second device included in the identical D2D group to communicate with a server and each device if the identical video is streamed to the second device; and a step of transmitting the modified play list to the first device and the second device.

Description

TECHNICAL FIELD [0001] The present invention relates to a streaming service providing method, a server,

The present invention relates to a method, a server and a system for providing streaming through terminal cooperation communication.

Live Streaming refers to a method of transmitting content such as video or audio to a user's video player in real time without downloading and playing the content. On-Demand Streaming allows you to create a video file through shooting and editing, then play the video when you need it, but live streaming encodes video and audio in real time to send to many users at the same time. . With the development of such streaming technology, there is no need to wait for downloading from the Internet, and a large-capacity hard disk is also unnecessary.

The protocols of the live streaming are Real-Time Streaming Protocol (RTSP) / Real-time Transport Protocol (RTP) and Real-Time Messaging Protocol (RTMP). However, in the case of the RTSP / RTP protocol, live streaming is not smoothly provided in environments where a firewall or NAT (Network Address Translator) is used frequently because data is exchanged through different network connections.

HLS (HTTP Live Streaming) is a protocol proposed by Apple in 2009. In this protocol, the streaming data is stored in the MPEG-2 Transport Stream and is divided and transmitted in a predetermined time unit. The playback information of the streaming data divided into time units is transmitted to the player using the m3u8 file. HLS supports Adaptive Bitrate Streaming, which can select and play the appropriate content according to the user's network speed.

A client receiving streaming through the HLS sequentially requests streaming data recorded in the m3u8 file to play back. The client periodically requests the m3u8 file to acquire a list of the streaming data while sequentially reproducing the streaming data.

On the other hand, D2D (direct to device) communication is a direct communication between terminals, and is a technology in which nearby terminals can communicate with each other without going through a base station. Typical examples are Bluetooth, Near Field Communication (NFC), and Wi-Fi Direct. D2D communication technology is attracting attention as it is anticipated that mobile traffic will increase rapidly due to increased use of high-capacity multimedia contents, and traffic of devices will increase to exponential due to the age of Internet of Things (IoT).

In this regard, Publication No. 2014-0128691 discloses a technique for a distributed scheduling method of resources in a device-to-device communication system.

When two devices connected through D2D (Device to Device) communication or terminals in the D2D group request a streaming service for the same video, each of the devices included in the same D2D group requests the video chunk not to be duplicated to the streaming server A server and a system for generating and providing a modified play list so that it can be exchanged through D2D communication after receiving the play list.

As a technical means for achieving the above technical object, an embodiment of the present invention is a method for receiving a video streaming request signal from a first device, comprising the steps of: receiving a video streaming request signal from a first device; Determining whether the first device and the second device included in the same D2D group provide streaming of the same video as the video and providing the streaming of the same video to the second device, Generating a modified playlist for communicating with the first device, and transmitting the modified playlist to the first device and the second device.

Another embodiment of the present invention provides a streaming request receiving unit for receiving a video streaming request signal from a first device, and a second device included in the same D2D (device to device) group as the device, And a second playback device for playing back the video, wherein the first device and the second device included in the same D2D group communicate with the server and each device when the streaming of the same video is provided to the second device, And a play list transmitter for transmitting the modified play list to the first device and the second device.

Still another embodiment of the present invention can provide a streaming providing system through terminal cooperation communication including a first device, a second device and a streaming providing server. The first device transmits a video streaming request signal including D2D connection information of the first device to the streaming providing server and communicates with the streaming providing server and the second device based on the modified play list received from the streaming providing server . The second device is configured to transmit the streaming request signal of the same video to the streaming providing server and to communicate with the streaming providing server and the first device based on the modified playlist received from the streaming providing server. The streaming providing server determines whether streaming of the same video as the video is provided to the second device included in the same D2D (device to device) group as the first device. In addition, when the streaming providing server is providing streaming of the same video to the second device, the streaming providing server generates a modified play list allowing each of the first device and the second device to communicate with the server and each device, To the first device and to the second device.

According to any one of the above-mentioned objects, it is possible to determine whether streaming of the same video is provided to another device included in the same D2D (device to device) group as the device requesting the streaming of video, A server and a system for generating and providing a modified play list in which each device included in the same D2D group communicates with the server and each device.

The modified play list allows each device connected to the D2D to exchange data through the D2D instead of requesting the same data to be duplicated to the server, thereby reducing the amount of data communication with the server, thereby improving the congestion of the communication network, Can reduce the amount of wireless data used as much as data exchanged through D2D.

1 is a configuration diagram of a streaming providing system according to an embodiment of the present invention.
2 is a block diagram of a streaming providing server according to an embodiment of the present invention.
3 is a flowchart illustrating a method of transmitting a modified play list and transmitting data based on a modified play list according to an embodiment of the present invention.
4 is a flowchart illustrating a method of transmitting data when one of devices included in the same D2D group streaming the same video according to an embodiment of the present invention stops the stream.
5 is a diagram illustrating a method of providing a streaming service to a device according to an embodiment of the present invention.
6 is a diagram illustrating a method of providing a streaming service to a device according to another embodiment of the present invention.
FIG. 7 is a flowchart illustrating a method of providing streaming through terminal cooperation communication according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "including" an element, it is to be understood that the element may include other elements as well as other elements, And does not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

In this specification, the term " part " includes a unit realized by hardware, a unit realized by software, and a unit realized by using both. Further, one unit may be implemented using two or more hardware, or two or more units may be implemented by one hardware.

In this specification, some of the operations or functions described as being performed by the terminal or the device may be performed in the server connected to the terminal or the device instead. Similarly, some of the operations or functions described as being performed by the server may also be performed on a terminal or device connected to the server.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a streaming providing system according to an embodiment of the present invention. Referring to FIG. 1, a streaming providing system 1 may include a streaming providing server 100 and a plurality of devices 110. Hereinafter, it will be assumed that the streaming providing server 100 provides the streaming service to the first device 120 and the second device 130. However, the streaming providing server 100 may transmit the streaming service to two or more devices .

The streaming providing server 100 may receive a streaming request signal of a specific video from the first device 120. [ The video streaming request signal may be, for example, a streaming request signal over the HLS. The streaming request signal may include D2D connection information of the first device 120. [ The D2D connection information may include information of the second device 130 connected to the first device 120 and the D2D interface address. Alternatively, the streaming request signal may not include the D2D connection information.

The streaming providing server 100 may create the first device 120 and the second device 130 as a D2D group based on the D2D connection information. For example, the streaming providing server 100 may inquire information about the D2D group of the first device 120 when the first device 120 requests the video streaming request. The streaming providing server 100 may generate the first device 120 and the second device 130 as one D2D group based on the D2D connection information when the D2D group of the first device 120 does not exist have.

The streaming providing server 100 may update the D2D group information. For example, when a device included in the D2D group releases the D2D connection, the streaming providing server 100 may update the D2D group information by detecting or receiving the related status information. For example, when a device not included in the D2D group requests the D2D connection, the streaming providing server 100 may update the D2D group information by detecting or receiving the related status information.

The streaming providing server 100 may determine whether there is a second device connected through the D2D communication with the first device 100. In addition, the streaming providing server 100 may use the same D2D (device to device) It may be determined whether the second device 130 included in the group is providing streaming of the same video. For example, if the first device 120 requests streaming of the first video to the streaming providing server 100, the streaming providing server 100 provides the stream of the same first video to the current second device 130 Or not.

When the streaming providing server 100 provides the streaming of the video requested by the first device 120 to the second device 130, the first device 120 and the second device 130 included in the same D2D group ) To communicate with the server and each device.

The playlist may include address information that can divide the video into a plurality of chunks and request each of the divided chunks. For example, the address information may be one of IP (Internet Protocol) addresses of the streaming providing server 100, the first device 120, and the second device 130.

The modified play list may be such that the address information of each chunk is changed so that the first device 120 and the second device 130 included in the same D2D group do not request the streaming providing server 100 to duplicate the same chunk .

For example, the streaming providing server 100 may cause the first device 120 to request the odd-numbered chunks to the streaming providing server 100, the even-numbered chunks to request the second device 130, (130) may request the even-numbered chunk to the streaming providing server (100), and the odd-numbered chunk may request the first device (120) to transform the playlist.

The first device 120 and the second device 130 can exchange chunks that have not been received from the streaming providing server 100 through D2D communication. For example, the first device 120 may receive even-numbered chunks from the second device 130. [ Also, the second device 130 may receive odd-numbered chunks from the first device 120. [ That is, the first device 120 and the second device 130 may perform roles of a client and a server mutually.

The streaming providing server 100 may transform the play list such that a terminal having a good performance receives some of the chunks first based on the network delay value or the available bandwidth of the devices in the D2D group.

For example, when the first device 120 is connected to an LTE (Long Term Evolution) network and the second device 130 is connected to a 3G (3 Generation) network, the streaming providing server 100 transmits Number of chunks to the first device 120. In addition, the streaming providing server 100 receives the chunks from the streaming providing server 100 until both the first device 120 and the second device 130 have a predetermined number of chunks, and then exchanges them through the D2D communication You can modify the playlist.

The streaming providing server 100 may transform the play list so that the devices in the D2D group equally request a chunk from the streaming providing server 100. [ Alternatively, the streaming providing server 100 may modify the play list so that the device does not request or request a chunk from the streaming providing server 100 more than other devices, when the specific device in the D2D group lacks the remaining amount of data . Alternatively, the streaming providing server 100 may modify the play list so that only a specific device in the D2D group requests a chunk from the streaming providing server 100. [

The streaming providing server 100 may transmit the modified play list to the first device 120 and the second device 130. [

If the streaming providing server 100 does not provide streaming of the same video requested by the first device 120 to the second device 130, the streaming providing server 100 may convert the original playlist before the modification to the first device 120).

The streaming providing server 100 may receive a signal requesting a chunk of video based on the modified play list from the first device 120 and the second device 130. [

The streaming providing server 100 may transmit chunks of video corresponding to the request signals of the first device 120 and the second device 130 to the first device 120 and the second device 130, respectively.

For example, the streaming providing server 100 may cause the first device 120 to request the odd-numbered chunks to the streaming providing server 100 and the even-numbered chunks to request the second device 130, Numbered chunk to the streaming providing server 100 and odd-numbered chunks to the first device 120 so as to transform the play list to the first device 120 and the second device 130, The first device 120 may request the odd-numbered chunks to the streaming providing server 100 and the second device 130 may request the even-numbered chunks to the streaming providing server 100. The streaming providing server 100 transmits the odd-numbered chunks to the first device 120 based on the request signals of the first device 120 and the second device 130, and the even- ).

The streaming providing server 100 may determine whether the second device 130 included in the same D2D group being provided with streaming of the same video stops streaming the video. Also, the streaming providing server 100 may determine whether the D2D connection between the first device and the second device is released. When the second device 130 stops streaming video or the D2D connection between the first device and the second device is released, the streaming providing server 100 transmits the original play list of video to the first device 120 It can be transmitted again.

For example, while the first device 120 and the second device 130 are streaming the same first video from the streaming providing server 100 through the modified play list, When the streaming of the video is interrupted, the streaming providing server 100 may transmit the original play list back to the first device 120. [ Thereafter, the first device 120 may request and receive all the chunks of the first video to the streaming providing server 100.

The first device 120 may transmit a video streaming request signal including the D2D connection information of the first device 120 to the streaming providing server 100. [ The D2D connection information may include information of the second device 130 connected to the first device 120 and the D2D interface address. Alternatively, the streaming request signal may not include the D2D connection information.

The first device 120 may receive a play list or a modified play list from the streaming providing server 100. [

When the original play list is provided from the streaming providing server 100, the first device 120 can request and receive all the chunks of the video to the streaming providing server 100.

The first device 120 can communicate with the streaming providing server 100 and the second device 130 based on the modified play list when the modified play list is provided from the streaming providing server 100. [ For example, the first device 120 may receive some of the plurality of chunks of the video from the streaming providing server 100, and the chunks other than some of the chunks may receive from the second device 130 via D2D communication. have.

The second device 130 may transmit the same video streaming request signal requested by the first device 120 to the streaming providing server 100. [

The second device 130 may receive the play list or the modified play list from the streaming providing server 100. [

If the original play list is provided from the streaming providing server 100, the second device 130 can request and receive all the chunks of the video to the streaming providing server 100.

When the modified play list is provided from the streaming providing server 100, the second device 130 can communicate with the streaming providing server 100 and the first device 120 based on the modified play list. For example, the second device 130 may receive some of the plurality of chunks of video from the streaming providing server 100, and some of the chunks may be received from the first device 120 via D2D communication have.

The network 160 is a connection structure capable of exchanging information between nodes such as devices and servers. An example of such a network 160 is the Internet, a wireless LAN (Wireless Local Area Network) , Wide Area Network (WAN), Personal Area Network (PAN), 3G, Long Term Evolution (LTE), Wireless Fidelity (WiFi), World Interoperability for Microwave Access (WiMAX), and Wireless Gigabit It does not.

The D2D network 170 is a direct communication between the terminals. The D2D network 170 means a connection structure in which terminals located close to each other can communicate with each other without going through a base station. An example of the D2D network 170 includes an LTE D2D, , Near Field Communication (NFC), and Wi-Fi Direct.

2 is a block diagram of a streaming providing server according to an embodiment of the present invention. 2, the streaming providing server 100 includes a streaming request receiving unit 200, a D2D group managing unit 210, a determining unit 220, a play list generating unit 230, a play list transmitting unit 240, A request receiving unit 250, and a transmitting unit 260.

The streaming request receiving unit 200 can receive a streaming request signal of a specific video from the first device 120. [ The video streaming request signal may be, for example, a streaming request signal over the HLS. The streaming request signal may include D2D connection information of the first device 120. [ The D2D connection information may include information of the second device 130 connected to the first device 120 and the D2D interface address. Alternatively, the streaming request signal may not include the D2D connection information.

The D2D group management unit 210 may generate the first device 120 and the second device 130 as one D2D group based on the D2D connection information. For example, the D2D group management unit 210 may inquire information on the D2D group of the first device 120 when the first device 120 requests a video streaming request. The D2D group management unit 210 can create the first device 120 and the second device 130 as one D2D group based on the D2D connection information when the D2D group of the first device 120 does not exist have.

The D2D group management unit 210 may update the D2D group information. For example, when a device included in the D2D group releases the D2D connection, the D2D group management unit 210 may update the D2D group information by detecting or receiving the related status information. For example, the D2D group management unit 210 may update the D2D group information by detecting or receiving the related status information when a device not included in the D2D group requests the D2D connection.

The determination unit 220 may determine whether there is a second device connected to the first device through the D2D communication. In addition, the determination unit 220 may determine whether the second device 130 included in the same D2D (device to device) group as the first device 120 provides streaming of the same video. For example, when the first device 120 requests streaming of the first video to the streaming providing server 100, the determining unit 220 provides the same first video stream to the current second device 130 Or not.

The determination unit 220 may determine whether the second device 130 included in the same D2D group that is provided with streaming of the same video stops streaming the video. Also, the determination unit 220 may determine whether the D2D connection between the first device and the second device is released. If the second device 130 stops streaming video or the D2D connection between the first device and the second device is released, the determination unit 220 transmits the original play list of the video to the first device 120 .

For example, while the first device 120 and the second device 130 are streaming the same first video from the streaming providing server 100 through the modified play list, If the streaming of the video is interrupted, the determination unit 220 may transmit the original play list to the first device 120. [ Thereafter, the first device 120 may request and receive all the chunks of the first video to the streaming providing server 100.

The playlist generating unit 230 generates a play list for the first device 120 and the second device 120 included in the same D2D group when the streaming of the video requested by the first device 120 is currently provided to the second device 130 130 to communicate with the server and each device.

The playlist may include address information that can divide the video into a plurality of chunks and request each of the divided chunks. For example, the address information may be one of IP (Internet Protocol) addresses of the streaming providing server 100, the first device 120, and the second device 130.

The modified play list may be such that the address information of each chunk is changed so that the first device 120 and the second device 130 included in the same D2D group do not request the streaming providing server 100 to duplicate the same chunk .

For example, the play list generator 230 may cause the first device 120 to request the odd-numbered chunks to the streaming providing server 100, the even-numbered chunks to request the second device 130, The device 130 may request the even-numbered chunk to the streaming providing server 100, and the odd-numbered chunk may request the first device 120 to transform the playlist.

The first device 120 and the second device 130 can exchange chunks that have not been received from the streaming providing server 100 through D2D communication. For example, the first device 120 may receive even-numbered chunks from the second device 130. [ Also, the second device 130 may receive odd-numbered chunks from the first device 120. [ That is, the first device 120 and the second device 130 may perform roles of a client and a server mutually.

The play list generating unit 230 may transform the play list such that the terminal having a good performance receives some of the chunks first based on the network delay value or the available bandwidth of the devices in the D2D group.

For example, when the first device 120 is connected to an LTE (Long Term Evolution) network and the second device 130 is connected to a 3G (3 Generation) network, the play list generating unit 230 A certain number of chunks may be transmitted to the first device 120. The play list generation unit 230 receives the chunks from the streaming providing server 100 until both the first device 120 and the second device 130 have a predetermined number of chunks, The play list can be modified.

The play list generating unit 230 may modify the play list so that the devices in the D2D group equally request a chunk from the streaming providing server 100. [ Alternatively, if the specific device in the D2D group has insufficient remaining data amount, the play list generating unit 230 may request the streaming providing server 100 to chunk the device more than other devices, or modify the play list so as not to request it have. Alternatively, the play list generating unit 230 may modify the play list so that only a specific device in the D2D group requests a chunk from the streaming providing server 100. [

The play list transmitting unit 240 may transmit the modified play list to the first device 120 and the second device 130. [ If the play list transmitting unit 230 does not provide streaming of the same video requested by the first device 120 to the second device 130, the play list transmitting unit 230 does not transform the play list, (120).

The video request receiving unit 250 may receive a signal requesting a chunk of video based on the modified play list from the first device 120 and the second device 130. [

The transmitting unit 260 may transmit video chunks corresponding to the request signals of the first device 120 and the second device 130 to the first device 120 and the second device 130, respectively.

For example, the streaming providing server 100 may cause the first device 120 to request the odd-numbered chunks to the streaming providing server 100 and the even-numbered chunks to request the second device 130, Numbered chunk to the streaming providing server 100 and odd-numbered chunks to the first device 120 so as to transform the play list to the first device 120 and the second device 130, The first device 120 may request the odd-numbered chunks to the streaming providing server 100 and the second device 130 may request the even-numbered chunks to the streaming providing server 100. The transmitting unit 260 transmits odd-numbered chunks to the first device 120 based on the request signals of the first device 120 and the second device 130, .

3 is a flowchart illustrating a method of transmitting a modified play list and transmitting data based on a modified play list according to an embodiment of the present invention. The method of transmitting the modified play list and transmitting data based on the modified play list according to the embodiment shown in FIG. 3 includes steps that are processed in a time-series manner in the system shown in FIG. 1 . Therefore, even if omitted below, the present invention is also applied to a method in which a streaming providing server, which is performed according to an embodiment shown in FIG. 3, transmits a modified play list and transmits data based on the modified play list. In Fig. 3, the first device and the second device may be included in the same D2D group while being in a D2D connection. The steps S312, S314, S316, and S318 for requesting and receiving data based on the transformed play list are performed in accordance with the order in which each device receives the modified play list and the time at which each video chunk is received Can be changed.

In operation S300, the first device may transmit a video streaming request signal including D2D connection information to the streaming providing server. In step S302, if the second device does not receive the streaming service of the video requested by the first device, or if there is no device connected to the first device with the D2D, the streaming providing server transmits the original play list of the video to the first device .

In step S304, the first device can request a chunk of video to the streaming providing server based on the original play list. In step S306, the streaming providing server may transmit the chunk to the first device.

In step S308, the second device may transmit the same video stream requested by the first device to the streaming providing server. In step S310, the streaming providing server may transmit the modified play list to the first device and the second device. For example, after the streaming providing server confirms that the first device and the second device belong to the same D2D group and that the second device requests the same video stream as the video requested by the first device, Device and the second device.

In step S312, the first device can request a chunk of video to the streaming providing server and the second device based on the modified play list. In step S314, the streaming providing server and the second device may transmit a chunk corresponding to the request of the first device to the first device.

In step S316, the second device can request a chunk of video to the streaming providing server and the first device based on the modified play list. In step S318, the streaming providing server and the first device may transmit a chunk corresponding to the request of the second device to the second device.

4 is a flowchart illustrating a method of transmitting data when one of devices included in the same D2D group streaming the same video according to an embodiment of the present invention stops the stream. If one of the devices included in the same D2D group streaming the same video according to the embodiment shown in FIG. 4 has stopped the stream, the method of transmitting data is performed in a time-series manner in the system shown in FIG. . Therefore, even if omitted below, the present invention is also applied to a method of transmitting data when one of the devices included in the same D2D group streaming the same video performed according to the embodiment shown in FIG. 4 stops the stream.

In Fig. 4, the first device and the second device are in a D2D connection, and can be included in the same D2D group.

Prior to step S400, the first device and the second device may be receiving streaming of the same video from the streaming providing server. In step S400, the second device may send a streaming stop request of video to the streaming providing server.

In step S410, the streaming providing server may transmit the original play list to the first device. In step S420, the first device can request a chunk of video to the streaming providing server based on the original play list. In step S430, the streaming providing server may transmit a chunk of video corresponding to the request of the first device to the first device.

5 is a diagram illustrating a method of providing a streaming service to a device according to an embodiment of the present invention. In FIG. 5, the first device 120 and the second device 130 are in a D2D connection, and may be included in the same D2D group.

The streaming providing server 100 can create and manage the first device 120 and the second device 130 as one D2D group.

When the first device 120 and the second device 130 request streaming of the same video, the first device 120 and the second device 130 respectively communicate with the server and each device A modified play list can be generated.

The streaming providing server 100 causes the first device 120 to request the even number of chunks to the streaming providing server 100 and the odd number of chunks to request the second device 130, It is possible to modify the play list to request the chunk to the streaming providing server 100 and the even chunk to the first device 120. [

The streaming providing server 100 transmits the modified play list 500 corresponding to the first device 120 to the first device 120 and the modified play list 502 corresponding to the second device 130, To the second device (130).

For example, the first device 120 requests (506) the 04.ts chunk 504 to the streaming providing server 100 based on the modified play list 500 corresponding to the first device 120 The 05.ts chunk 508 requests 510 to the second device 130 and the 06.ts chunk 512 requests 514 to the streaming providing server 100 and the 07.ts chunk 516, (518) to the second device (130).

The streaming providing server 100 may receive the video chunk request of the first device 120 and may send the 04.ts chunk 504 and the 06.ts chunk 512 to the first device 120. [ The second device 130 also receives the video chunk request of the first device 120 and transmits the 05.ts chunks 508 and 07.ts chunks 516 received from the streaming providing server 100 1 < / RTI >

The second device 130 also requests 520 the 04.ts chunk 504 to the first device 120 based on the modified play list 502 corresponding to the second device 130, The .ts chunk 508 requests 522 to the streaming providing server 100 and the 06.ts chunk 512 requests 524 to the first device 120. The 07.ts chunk 516 is streamed (526) to the providing server (100).

The streaming providing server 100 may receive a video chunk request from the second device 130 and send 05.ts chunks 508 and 07.ts chunks 516 to the second device 130. [ The first device 120 also receives a video chunk request from the second device 130 and stores the 04.ts chunk 504 and the 06.ts chunk 512 received from the streaming providing server 100 2 device 130, as shown in FIG.

6 is a diagram illustrating a method of providing a streaming service to a device according to another embodiment of the present invention. In FIG. 6, the first device 120, the second device 130, the third device 140, and the fourth device 150 are D2D-connected and may be included in the same D2D group.

The streaming providing server 100 can create and manage the first device 120, the second device 130, the third device 140 and the fourth device 150 as one D2D group.

The first device 120 may be a group owner of the D2D group. The group owner can receive the chunks of video from the devices included in the D2D group and relay them to the respective devices without requesting the streaming providing server 100 with a chunk of video.

For example, the streaming providing server 100 sends 04.ts chunk 600 to the second device 130, 05.ts chunk 602 to the third device 140, 06.ts chunk 604, To the fourth device (150). The second device 130, the third device 140 and the fourth device 150 generate 04.ts chunks 600, 05.ts chunks 602 and 06.ts chunks 604 To the first device 120, respectively.

The first device 120 includes the 04.ts chunk 600, 05.ts chunk 602, and 06.ts chunk 602 received from the second device 130, the third device 140 and the fourth device 150, The third device 140, and the fourth device 150 on the basis of the modified play list.

For example, the first device 120 may send the 05.ts chunk 602 and the 06.ts chunk 604 to the second device 130. Also, the first device 120 may send the 04.ts chunk 600 and 06.ts chunk 604 to the third device 140. Also, the first device 120 may send the 04.ts chunk 600 and the 05.ts chunk 602 to the fourth device 150. [

FIG. 7 is a flowchart illustrating a method of providing streaming through terminal cooperation communication according to another embodiment of the present invention. The method for providing streaming through the terminal cooperation communication according to the embodiment shown in FIG. 7 includes steps that are processed in a time-series manner in the system shown in FIG. Accordingly, the present invention is also applied to a streaming providing method through the terminal cooperation communication performed according to the embodiment shown in FIG.

In step S700, the streaming providing server may receive a video streaming request signal from the first device. In step S710, the streaming providing server may determine whether the second device included in the same D2D (device to device) group as the first device is providing streaming of the same video requested by the first device.

If the first device is not providing streaming of the same video requested by the first device to the second device in step S720, the streaming providing server may transmit the original playlist of video to the first device.

In step S730, if the first device is providing streaming of the same video requested by the first device, the streaming providing server may generate the modified playlist. In step S740, the streaming providing server may transmit the modified play list to the first device and the second device.

The streaming providing server described in FIG. 3, FIG. 4, and FIG. 7 transmits a modified play list and transmits data based on the modified play list, a method of transmitting one of the devices included in the same D2D group A method for transmitting data and a method for streaming through a terminal cooperative communication are also embodied in the form of a recording medium including a computer program stored in a medium executed by the computer or an instruction executable by the computer . Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium can include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

1: streaming providing system
100: streaming server
110: a plurality of devices
120: first device
130: second device
140: third device
150: fourth device
160: Network
170: D2D network

Claims (23)

A method for providing streaming through terminal cooperation communication,
Receiving a video streaming request signal from a first device;
Determining whether a streaming of the same video as the video is provided to a second device included in the same D2D (device to device) group as the first device;
The first device and the second device included in the same D2D group are provided with a streaming providing server and a modified play list for communicating with the respective devices when the streaming of the same video is provided to the second device ; And
Transmitting the modified play list to the first device and the second device
Gt; a < / RTI > streaming method.
The method according to claim 1,
Wherein the streaming request signal includes D2D connection information of the first device.
3. The method of claim 2,
Wherein the D2D connection information includes information of a second device connected to the first device by a D2D and a D2D interface address.
3. The method of claim 2,
Generating the first device and the second device as one D2D group based on the D2D connection information
The method of claim 1, further comprising:
The method according to claim 1,
Determining whether the second device included in the same D2D group as the first device is providing streaming of the same video as the video
Determining whether the second device is connected to the first device through D2D communication
Gt; a < / RTI > streaming method.
The method according to claim 1,
Determining whether a second device included in the same D2D group being provided with streaming of the same video stops streaming the video; And
If the second device stops streaming the video, transmitting the original playlist of the video to the first device
The method of claim 1, further comprising:
The method according to claim 6,
The step of determining whether the second device stops streaming the video
Determining whether a D2D connection between the first device and the second device is released
Gt; a < / RTI > streaming method.
The method according to claim 1,
And if the streaming of the same video is not provided to the second device, transmitting the original play list of the video to the first device
The method of claim 1, further comprising:
The method according to claim 1,
Wherein the playlist includes address information capable of dividing the video into a plurality of chunks and requesting each of the divided chunks.
10. The method of claim 9,
Wherein the modified play list has the address information of each of the chunks changed so that the first device and the second device included in the same D2D group do not request the streaming providing server to duplicate the same chunk.
11. The method of claim 10,
Wherein the address information of each of the chunks is one of address information of the streaming providing server, address information of the first device, and address information of the second device.
10. The method of claim 9,
Receiving a signal from the first device and the second device requesting a chunk of the video based on the modified playlist; And
Transmitting a chunk of video corresponding to a request signal of the first device and the second device to each of the first device and the second device,
The method of claim 1, further comprising:
A streaming providing server through terminal cooperation communication,
A streaming request receiving unit for receiving a video streaming request signal from a first device;
A determination unit for determining whether streaming of the same content as the video is provided to a second device included in the same D2D (device to device) group as the device;
Wherein the first device and the second device included in the same D2D group communicate with the server and each device when streaming the same video to the second device, A play list generation unit for generating a play list; And
And transmitting the modified play list to the first device and the second device,
The streaming providing server comprising:
14. The method of claim 13,
Wherein the streaming request signal includes D2D connection information of the first device.
15. The method of claim 14,
A D2D group management unit for generating the first device and the second device into one D2D group based on the D2D connection information,
The server further comprising:
14. The method of claim 13,
Wherein the determination unit further determines whether or not the second device is connected through the D2D communication with the first device.
14. The method of claim 13,
Wherein,
Determining whether a second device included in the same D2D group that is being provided with the same video stream stops streaming the video,
Wherein the playlist transmitter comprises:
Play list of the video to the first device when the second device stops streaming the video.
14. The method of claim 13,
Wherein the playlist transmitting unit transmits the original play list of the video to the first device if the play list transmitting unit does not provide the streaming of the same video to the second device.
14. The method of claim 13,
Wherein the playlist comprises address information capable of dividing the video into a plurality of chunks and requesting each of the divided chunks.
20. The method of claim 19,
Wherein the playlist generating unit changes the address information of each of the chunks so that the first device and the second device included in the same D2D group do not request the streaming providing server to duplicate the same chunk.
20. The method of claim 19,
A video request receiving unit receiving a signal requesting a chunk of the video based on the modified play list from the first device and the second device; And
A transmitting unit for transmitting a chunk of video corresponding to a request signal of the first device and the second device to each of the first device and the second device,
The server further comprising:
A streaming providing system through terminal cooperation communication,
A first device;
A second device; And
Streaming Provided Server
, ≪ / RTI &
The first device comprising:
Transmitting a video streaming request signal including D2D connection information of the first device to the streaming providing server,
And to communicate with the streaming providing server and the second device based on the modified play list received from the streaming providing server,
Wherein the second device comprises:
Transmitting the same video streaming request signal to the streaming providing server,
And to communicate with the streaming providing server and the first device based on the modified play list received from the streaming providing server,
The streaming providing server includes:
Determining whether the second device included in the same D2D (device to device) group as the first device is providing streaming of the same video as the video,
Generating a modified playlist for allowing each of the first device and the second device to communicate with the streaming providing server and each device when the streaming of the same video is provided to the second device,
And to transmit the modified playlist to the first device and the second device.
23. The method of claim 22,
Wherein the playlist includes address information capable of dividing the video into a plurality of chunks and requesting each of the divided chunks,
The first terminal,
Receive a portion of a plurality of chunks of the video from the streaming providing server based on the modified play list and receive chunks excluding the chunks from the second terminal,
The second terminal,
And receive from the streaming providing server a part of a plurality of chunks of the video based on the modified play list, and receive chunks excluding the part of the chunks from the first terminal.

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