KR101041340B1

KR101041340B1 - Media streaming system for high speed movement user, and method thereof

Info

Publication number: KR101041340B1
Application number: KR1020080087613A
Authority: KR
Inventors: 배태면
Original assignee: 에스케이 텔레콤주식회사
Priority date: 2008-09-05
Filing date: 2008-09-05
Publication date: 2011-06-14
Also published as: KR20100028747A

Abstract

According to the present invention, when the mobile terminal streams and plays video media through a mobile communication network in a server, the server predicts an optimal network state of the mobile terminal even if the mobile terminal streaming video media is moving at a high speed, and the predicted network The present invention relates to a media streaming system for a high speed mobile user, and a method for streaming media to a mobile terminal according to a state.

The media streaming system according to the present invention collects a moving path and a network state from a user terminal and stores it as streaming information, and predicts a current network state based on the streaming information when a media request is made from a moving user terminal. A server for streaming media to the mobile user terminal according to the established network status; And a user terminal which transmits the network status of the location to the server, requests the media to the server during the movement, and streams the media from the server.

According to the present invention, even if the user terminal is moving at a high speed, it is possible to provide media streaming suitable for the network situation to the user terminal, and the user moving at a high speed can watch a video without interruption of video or deterioration of image quality.

Media, streaming, high speed, moving, video, network, status, CQI

Description

Media streaming system for high speed movement user, and method

The present invention relates to a media streaming system and a method for a high speed mobile user, and more particularly, when a mobile terminal receives and plays video media through a mobile communication network from a server, the mobile terminal receiving the video media is fast. The present invention relates to a media streaming system for a high speed mobile user, and a method thereof, wherein a server predicts an optimal network state of a mobile terminal and streams media to the mobile terminal according to the predicted network state even if the user is moving.

In general, multimedia data such as video and audio are larger than text data. Since transmitting large data over the Internet requires more time than transmitting small data, transmitting multimedia data takes much more time than transmitting text data. Accordingly, there is a need for a new method for transmitting multimedia data over the Internet and reproducing the received data.

In addition, the multimedia data has a larger size than other data, and the multimedia data is sequentially and regularly read and reproduced. That is, the multimedia data is played in a predetermined order according to the passage of time in moving the multimedia data and playing the voice or video, and there is no problem for the user to use the multimedia if only the data corresponding to the played part is provided. This feature eliminates the need to store the data file itself to drive multimedia data. That is, not all data must be present in order to reproduce a large amount of multimedia data corresponding to one hour of video, but only data corresponding to the portion being played can be played back.

Due to these features, streaming has been proposed for the transmission and operation of multimedia data. That is, when the user wants to play the multimedia data through the electronic network, it starts receiving the data from the server, starts playing when the data is filled in the buffer of the predetermined size, and in real time according to the speed of consuming data during the playback. Receive data from the server so that playback is not interrupted.

Unlike the download method, the streaming method is sensitive to the data transmission speed because only the necessary data is received and reproduced in real time without the entire multimedia data stored. That is, when the transmission speed is slower than the rate at which the reproduction program reproduces data, the reproduction of audio or moving images occurs. Therefore, when multiple users access the same server at the same time, normal service cannot be provided. To avoid this, the number of users connecting to one server should be strictly limited. As the work of playing multimedia is highly dependent on the transmission speed of data, it is difficult to provide high quality or sound quality, and in particular, the size of the screen is limited. This is because as the image quality or sound quality increases or the screen size increases, the amount of data required for reproduction per unit time increases rapidly, and as a result, high-speed data transmission is required.

In particular, when a server streams media to a mobile terminal through a mobile communication network, there is a demand for a technology capable of streaming media without interruption of video or deterioration of image quality even when the mobile terminal is moving.

However, when the mobile terminal moves at a high speed, a handover occurs as a result of moving from one wireless base station to another wireless base station, which causes a sudden change in the transmission state, thereby causing a problem in that the video is interrupted or the image quality is degraded.

According to the present invention for solving the above-described problems, when the mobile terminal receives and plays the video media through the mobile communication network in the server, the optimal network of the mobile terminal in the server even if the mobile terminal receiving the video media is moving at high speed. An object of the present invention is to provide a media streaming system and a method for a fast mobile user, which predict a state and enable streaming of media to a mobile terminal according to the predicted network state.

In accordance with an aspect of the present invention, a media streaming system collects a moving path and a network state from a user terminal and stores the moving path and the network state as streaming information. A server for predicting a network state and streaming media to the mobile user terminal according to the predicted network state; And a user terminal which transmits the network status of the location to the server, requests the media to the server during the movement, and streams the media from the server.

In addition, the network state collected by the server includes the current position, time, and the strength of the radio wave (CQI) of the user terminal.

And the moving path includes a start position and an end position of a fast movement obtained by searching for a subway line or a bus line that is most similar to a path of a wireless base station to which the user terminal is connected.

On the other hand, the media server according to the present invention for achieving the above object, a communication unit for communicating with the user terminal; A media transmission unit for transmitting media to the user terminal through the communication unit; A user state storage unit for collecting a moving path and a network state from the user terminal and storing the moving path and the network state as streaming information; A network state predictor for predicting a network state based on the streaming information; And a controller for predicting a current network state based on the streaming information when a media request is made from the user terminal in motion, and controlling to stream media to the user terminal in motion according to the predicted network condition.

In addition, the user state storage unit stores the current position, time, and the strength of the radio wave (CQI) of the user terminal.

The user state storage unit may store a movement path including a start position and an end position of a fast movement obtained by searching for a subway line or a bus line most similar to a route of a wireless base station to which the user terminal is connected.

In addition, the user state storage unit, the number of the wireless base station is a certain threshold value when the path of the wireless base station is identically matched on the moving path of the user terminal when the user terminal is moving each subway line or bus line The above subway line or bus line is stored as a movement route of the user terminal.

When the media request is made from the user terminal, the control unit matches a route in which at least N predetermined wireless base stations are already recorded in the information about the movement route and the network state collected from the user terminal, and the movement time is recorded. If the user terminal is less than a predetermined error time at a predetermined time, it is recognized that the user terminal is moving at high speed.

On the other hand, the user terminal according to the present invention for achieving the above object, Communication unit for communicating with the media server; A media player which plays media data received from the media server through the communication unit; A display unit which displays the played media data; A network state collecting unit for collecting a network environment and a terminal location; And a controller for transmitting a network state of a current location to the media server and controlling the media to be streamed from the media server according to the network state by requesting media during movement.

Here, when the terminal location is moving on each subway line and bus line, the controller transmits its location and time information to the media server whenever the terminal is connected to the wireless base station.

On the other hand, the media streaming method according to the present invention for achieving the above object, a media streaming method of a system comprising a user terminal and a media server, (a) the user terminal to transmit the network information to the media server system; (b) the media server calculating a moving path of the user terminal based on the network information and storing the moving path as streaming information; (c) the user terminal requesting media streaming to the media server while moving; (d) the media server predicting a network state of the user terminal based on the streaming information; And (e) the media server streaming media to the moving user terminal based on the predicted network condition.

In addition, in the step (a), the user terminal collects the current location, time, and strength of the radio wave (CQI) and transmits it to the media server as network information.

In the step (b), the mobile station calculates a movement route including a start position and an end position of a fast movement obtained by searching for a subway line or a bus route that is most similar to a route of a wireless base station to which the user terminal is connected to the streaming information. Save it.

On the other hand, the media streaming method of the media server according to the present invention for achieving the above object, (a) collecting the movement path and network state from each user terminal; (b) storing the collected moving path and the network state in correspondence with information of each user terminal; (c) receiving a request for media streaming from any user terminal; (d) predicting a network state of the user terminal; And (e) streaming media to the user terminal in accordance with the predicted network condition.

In addition, the step (a) collects the network state including the current location, time and radio wave (CQI) of the user terminal, calculates and collects the movement path of the user terminal based on the network state do.

Also, the step (d) may include a movement route including a start position and an end position of a fast movement obtained by searching for a subway line or a bus route that is most similar to a route of a wireless base station to which the user terminal which has requested the media streaming is connected. On the basis of this, the network state of the current location of the user terminal is predicted.

Also, in the step (d), when the user terminal moves in each subway line or bus line, the number of the wireless base stations is equal to a certain threshold when the paths of the wireless base stations match the same on the movement paths of the user terminal. A subway line or a bus line having a value greater than or equal to a value is selected as a movement route of the user terminal.

And, the step (d) is a predetermined error in the time when the movement time is recorded, the same as the previously recorded line of the N or more radio base stations in the information on the movement path and network state collected from the user terminal If it is less than the time, it is recognized that the user terminal is moving at high speed.

On the other hand, the media streaming method of the media server according to the present invention for achieving the above object can be recorded in a computer-readable medium with a program.

According to the present invention, even if the user terminal is moving at a high speed, it is possible to provide the user terminal device with media streaming suitable for the network situation.

In addition, a user who is moving at a high speed may watch a video without interruption or deterioration of an image.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing the configuration of a media streaming system according to an embodiment of the present invention.

Referring to FIG. 1, a media streaming system 100 according to the present invention includes a media server 110, a communication network 120, and a user terminal 130.

The media server 110 collects the moving path and the network state from the user terminal 130 and stores the moving path and the network state as streaming information. When the media server 110 requests the media from the moving user terminal 130, the media server 110 predicts the current network state based on the streaming information. In response to the predicted network condition, the media is streamed to the moving user terminal 130.

In addition, the network status collected by the media server 110 includes the current location, time, and intensity of the user terminal 130 (CQI: Channel Quality Indicator).

In addition, the movement route includes a start position and an end position of the fast movement obtained by searching for a subway line or a bus line that is most similar to the route of the wireless base station to which the user terminal 110 is connected.

In addition, the media server 110 may determine the number of wireless base stations when the user terminal 130 is identically matched on the moving path of the user terminal 130 when the subway line or the bus line moves. Selects a subway line or a bus line having a specific threshold value or more as a moving path of the user terminal 130.

When the media server 110 requests a media from the user terminal 130, the media server 110 matches a line in which at least N predetermined wireless base stations are already recorded in the information about the movement path and the network state collected from the user terminal 130. When the movement time is less than or equal to the predetermined error time, the user terminal 130 recognizes that the vehicle is moving at high speed.

The communication network 120 provides a transmission path for the streaming server 110 to stream media to the user terminal 130, and also provides an access path for the user terminal 130 to access the streaming server 110. Here, the communication network 120 may be a wireless network such as a mobile communication network or a local area network, or may be a wired network such as the Internet.

The user terminal 130 transmits the network status of the current location to the media server 110, requests media from the media server 110 during the movement, and receives the media from the media server 110.

2 is a configuration diagram schematically showing an internal configuration of a media server according to an embodiment of the present invention.

Referring to FIG. 2, the media server 110 according to the present invention may include a communication unit 210, a media transmitter 220, a user state storage unit 230, a network state predictor 240, and a controller 250. Include.

The communication unit 210 communicates with the user terminal 130 through the communication network 120.

The media transmitter 220 transmits the media to the user terminal 130 through the communication unit 210.

The user state storage unit 230 collects a moving path and a network state from the user terminal 130 and stores the moving path and the network state as streaming information.

In addition, the user state storage unit 230 stores the network state including the current position, time, and the strength of the radio wave (CQI) of the user terminal 130.

In addition, the user state storage unit 230 stores a movement route including a start position and an end position of a fast movement obtained by searching for a subway line or a bus line that is most similar to a route of a wireless base station to which the user terminal 130 is connected. Done.

In addition, the user state storage unit 230 is a wireless base station when the user terminal 130 is identically matched on the movement path of the user terminal 130 when the respective subway lines or bus lines are moved. The subway line or the bus line whose number is greater than or equal to a certain threshold value is stored as the moving path of the user terminal 130.

The network state predictor 240 predicts the network state based on the streaming information.

When the media request is made from the moving user terminal 130, the controller 250 predicts the current network state based on the streaming information, and controls to stream the media to the moving user terminal 130 according to the predicted network state. .

In addition, when the media request is received from the user terminal 130, the controller 250 may match a line in which at least N predetermined wireless base stations are already recorded in the information about the movement path and the network state collected from the user terminal 130. When the movement time is less than or equal to the predetermined error time, the user terminal 130 recognizes that the vehicle is moving at high speed.

3 is a configuration diagram schematically showing an internal configuration of a user terminal according to an embodiment of the present invention.

Referring to FIG. 3, the user terminal 130 according to the present invention includes a communication unit 310, a media playback unit 320, a display unit 330, a network state collector 340, and a controller 350.

The communication unit 310 communicates with the media server 110 through the communication network 120.

The media player 320 plays the media data received from the media server 110 through the communication unit 310.

The display unit 330 displays the media data reproduced through the media player 320 on the screen.

The network state collecting unit 340 collects the network environment and the terminal location from the user terminal 130.

The control unit 350 transmits the network state of the current location where the user terminal 130 is located to the media server 110, and requests media during the movement to receive the media from the media server 110 according to the network state. .

Here, the control unit 350 transmits the network state including the current location, time, and the strength of the radio wave (CQI) of the user terminal 130 to the media server 110.

4 is a flowchart illustrating a media streaming method according to an embodiment of the present invention.

Referring to FIG. 4, first, the user terminal 130 transmits its network information to the media server 110 (S410).

Here, the network information transmitted from the user terminal 130 to the media server 110 includes the current location, time, and the intensity of the radio wave (CQI) of the user terminal 130.

In addition, when the location of the user terminal 130 is moving on each subway line and bus line, the control unit 350 of the user terminal 130 may transmit its location and time information each time it connects to the wireless base station on the moving path. It transmits to the media server 110.

Accordingly, the media server 110 calculates a moving path of the user terminal 130 based on the network information received from the user terminal 130 and stores it in the user state storage unit 130 as streaming information (S420).

Subsequently, the user terminal 130 requests media streaming to the media server 110 while moving (S430).

The media server 110 predicts the network state of the user terminal 130 through the network state predicting unit 240 based on the streaming information (S440).

Here, the network state predicted by the media server 110 includes a movement path of the user terminal 130. In this case, the movement route includes a start position and an end position of the fast movement obtained by searching for the subway line or the bus line that is most similar to the route of the wireless base station to which the user terminal 130 is connected.

In addition, the media server 110 matches the route in which the predetermined N or more wireless base stations are already recorded in the information about the movement route and the network state collected from the user terminal 130, and advances at the time at which the movement time is recorded. The user terminal 130 recognizes that it is moving at a high speed when it is less than a predetermined error time.

In addition, the media server 110 may determine the number of wireless base stations when the user terminal 130 is identically matched on the moving path of the user terminal 130 when the subway line or the bus line moves. A subway line or a bus line that is greater than or equal to a certain threshold value is selected as the movement route of the user terminal 130.

The media server 110 streams the media to the currently moving user terminal 130 based on the predicted network state (S450).

5 is a flowchart illustrating a media streaming method of a media server according to an exemplary embodiment of the present invention.

Referring to FIG. 5, the media server 110 collects a movement path and a network state from each user terminal (S510).

At this time, the media server 110 collects the network state including the current position, time, and the strength of the radio wave (CQI) of each user terminal.

The media server 110 stores the collected movement path and network state in the user state storage unit 230 in correspondence with the information of each user terminal (S520).

Subsequently, when the media server 110 receives a media streaming request from an arbitrary user terminal 130 (S530), based on the movement path and the network state of each user terminal stored in the user state storage unit 230, The network state of the user terminal 130 requesting the media streaming is predicted (S540).

Here, the media server 110 includes a user terminal 130 including a start position and an end position of a fast movement obtained by searching for a subway line or a bus line most similar to a route of a wireless base station to which the user terminal 130 is moving. To predict the moving path of.

In addition, the media server 110 corresponds to a line in which at least N predetermined wireless base stations are already recorded in the information about the movement route and the network state collected from the user terminal 130, and is determined at a time when the movement time is recorded. If it is less than the error time, it is recognized that the user terminal is moving at high speed.

In addition, the media server 110 may determine the number of wireless base stations when the user terminal 130 is identically matched on the movement path of the user terminal 130 when the user moves the subway line or the bus line. A subway line or a bus line that is greater than or equal to a certain threshold value is selected as the movement route of the user terminal 130.

The media server 110 streams the media to the user terminal 130 according to the predicted network state (S550).

Accordingly, the user terminal 130 moving at a high speed displays the streamed media through the media player 320.

On the other hand, the media streaming method of the media server according to the present invention can be recorded in a computer-readable medium with a program.

As described above, according to the present invention, when the mobile terminal receives and plays the video media through the mobile communication network from the server, even if the mobile terminal receiving the video media is moving at a high speed, the server maintains the optimal network state of the mobile terminal. It is possible to realize a media streaming system and method for a high speed mobile user that can predict and stream media to a mobile terminal according to the predicted network conditions.

As those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features, the embodiments described above should be understood as illustrative and not restrictive in all aspects. Should be. The scope of the present invention is shown 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 included in the scope of the present invention. Should be interpreted.

The present invention can be applied to a system for streaming multimedia data such as a video to a user terminal through a communication network.

In addition, the present invention can be applied to a wireless communication system in which media should be streamed even when the user terminal is moving without deterioration of image or deterioration of image quality.

The present invention can also be applied to a mobile communication system that needs to provide optimal media streaming to a mobile terminal even when a sudden change in the transmission state such as a handover occurs due to high speed movement.

100: media streaming system 110: media server

120: communication network 130: user terminal

210: communication unit 220: media transmission unit

230: user state storage unit 240: network state prediction unit

250 control unit 310 communication unit

320: media player 330: display unit

340: network state collection unit 350: control unit

Claims

Collect the moving path and the network state from the user terminal to store the streaming information, when the media request from the moving user terminal, the current network state is predicted based on the streaming information, the moving user according to the predicted network state A server for streaming media to the terminal; And

A user terminal which transmits the network status of the location where it is located to the server, requests media to the server during the movement, and streams the media from the server;

The server may be a subway line or a bus in which the number of the wireless base stations is equal to or greater than a certain threshold when the user terminal moves in each subway line or bus line, when the paths of the wireless base stations are identically matched on the movement paths of the user terminal. And storing a route as a movement route of the user terminal.

The method of claim 1,

The network state collected by the server comprises the current position, time and intensity of the user terminal (CQI) of the user terminal.

The method of claim 1,

The moving route may include a start position and an end position of a fast movement obtained by searching for a subway line or a bus line most similar to a route of a wireless base station to which the user terminal is connected.

A communication unit for communicating with a user terminal;

A media transmission unit for transmitting media to the user terminal through the communication unit;

A user state storage unit for collecting a moving path and a network state from the user terminal and storing the moving path and the network state as streaming information;

A network state predictor for predicting a network state based on the streaming information; And

And a controller for predicting a current network state based on the streaming information when the media is requested from the moving user terminal, and streaming the media to the moving user terminal according to the predicted network state.

The user state storage unit, when the user terminal is moving each subway line or bus line, the number of the wireless base station is equal to or more than a certain threshold when the path of the wireless base station is equally matched on the moving path of the user terminal And a route or bus route as a movement route of the user terminal.

The method of claim 4, wherein

The user state storage unit, the media server, characterized in that for storing the network state including the current location, time and the strength of the radio wave (CQI) of the user terminal.

The method of claim 5,

The user state storage unit may store a movement path including a start position and an end position of a fast movement obtained by searching for a subway line or a bus line most similar to a route of a wireless base station to which the user terminal is connected. server.

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The method of claim 4, wherein

When the media request is made from the user terminal, the control unit matches a line in which at least N predetermined wireless base stations are already recorded in the information about the movement route and the network state collected from the user terminal, and the movement time is recorded. In the case of less than a predetermined error time in the media server, characterized in that the user terminal is recognized as moving fast.

When the user terminal moves each subway line or bus line, when the path of the wireless base station is identically matched on the moving path of the user terminal, the user selects the subway line or the bus line where the number of the wireless base stations is equal to or greater than a certain threshold. A communication unit for communicating with a media server stored in a moving path of a terminal;

A media player which plays media data received from the media server through the communication unit;

A display unit which displays the played media data;

A network state collecting unit for collecting a network environment and a terminal location; And

And a control unit which transmits a network state of a current location to the media server, and controls to stream the media from the media server according to the network state by requesting the media during the movement.

The method of claim 9,

The control unit transmits its location and time information to the media server whenever the terminal location is moving on each subway line and bus line, whenever the terminal is connected to a wireless base station.

A media streaming method of a system including a user terminal and a media server,

(a) the user terminal transmitting network information to the media server;

(b) the media server calculating a moving path of the user terminal based on the network information and storing the moving path as streaming information;

(c) the user terminal requesting media streaming to the media server while moving;

(d) the media server predicting a network state of the user terminal based on the streaming information; And

(e) the media server streaming the media to the mobile user terminal based on the predicted network condition,

The media server may be configured such that, when the user terminal moves on each subway line or bus line, the number of the wireless base stations is equal to or greater than a certain threshold value when the paths of the wireless base stations match the same on the movement paths of the user terminal. Or storing a bus route as a movement route of the user terminal.

The method of claim 11,

In the step (a), the user terminal collects the current location, time, and strength of the radio wave (CQI) and transmits the network information to the media server as a network information.

The method of claim 11,

In the step (b), calculating a moving path including a start position and an end position of a fast movement obtained by searching for a subway line or a bus line most similar to a route of a wireless base station to which the user terminal is connected, and storing it as streaming information. Media streaming method, characterized in that.

(a) collecting a movement path and a network state from each user terminal;

(b) storing the collected moving path and the network state in correspondence with information of each user terminal;

(c) receiving a request for media streaming from any user terminal;

(d) predicting a network state of the user terminal; And

(e) streaming media to the user terminal in accordance with the predicted network condition,

In the step (d), when the user terminal moves in each subway line or bus line, the number of the wireless base stations is equal to or greater than a certain threshold value when the paths of the wireless base stations match the same on the moving paths of the user terminal. And selecting a subway line or a bus line as a moving route of the user terminal to predict a network state.

The method of claim 14,

In the step (a), the network state including the current location, time, and radio wave (CQI) of the user terminal is collected, and the movement path of the user terminal is calculated and collected based on the network state. The media streaming method of the media server.

The method of claim 14,

The step (d) is based on a movement route including a start position and an end position of a fast movement obtained by searching for a subway line or a bus route that is most similar to a route of a wireless base station to which the user terminal which has requested the media streaming is connected. And predicting a network state of the current location of the user terminal.

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The method of claim 14,

In step (d), the N or more radio base stations predetermined in the information on the movement route and the network state collected from the user terminal are consistent with the previously recorded route, and the movement time is less than or equal to the predetermined error time at the recorded time. And recognizing that the user terminal is moving at high speed.

19. A computer-readable recording medium recording a media streaming method of any one of claims 14 to 18 except for a program.