KR20180031193A - Method for trnasmitting of streamming data and apparatus for the same - Google Patents

Abstract

The present invention relates to a streaming service and, more specifically, to a streaming data transmitting method and a streaming server therefor which determine service quality of streaming data in accordance with an environment of an adjacent cell of a direction, in which a terminal wants to move if it is determined that the terminal is to move and determine service quality of streaming data in accordance with an environment of a currently connected cell if it is determined that the terminal is not to move in consideration of mobility of the terminal when a streamlining server transmits the streaming data to the terminal.

Description

TECHNICAL FIELD [0001] The present invention relates to a streaming data transmission method, and a streaming server for the streaming data transmission method.

The present invention relates to a streaming service, and more particularly, to a streaming data transmission method capable of adaptively changing a service quality in consideration of mobility of a terminal when transmitting a streaming data to a terminal and transmitting the streaming data, and a streaming server will be.

The contents described in this section merely provide background information on the present embodiment and do not constitute the prior art.

Streaming refers to the transmission of content such as video or audio from a server to a client over a network, such as the Internet. The transmitted data is called streaming if it is treated as though water is flowing. The streaming server separates the contents into data packets so that the contents can be transmitted to the network. The terminal recovers the received data packets, restores them to their original form, and reproduces them. At this time, playback and packet reception occur simultaneously, and a series of related packets is called a stream.

In such a streaming service, demand for high-quality live broadcasting is gradually increasing, and demand for real-time live streaming service in a smart phone is increasing explosively. Accordingly, an adaptive streaming service for providing a streaming service in response to a demand for an explosively increasing streaming service has attracted attention.

The adaptive streaming service is proposed to consider various network environments in a rapidly changing mobile environment and means a method of variably changing the transmission quality of a streaming service according to a change of a transmission bandwidth or a user's device performance. However, in the case of a general adaptive streaming service, in the state where the same video encoded for each bit rate according to the service transmission quality is stored in a chunk form divided into a certain length, the terminal periodically checks the variable reception environment There is a problem that only the environment of the network to which the terminal is currently connected considers only the method in which the streaming server requests and provides the video having the most appropriate bit rate at the time.

In other words, when a user terminal moves from a high-quality network environment to a congested network environment, the adaptive streaming service up to the present time changes the quality of the image from the time when the user moves to a congested network environment, There is a problem that the user must experience a loss of image quality, and it takes a certain time to change the image quality.

Therefore, it is necessary to develop a technology capable of detecting a mobile environment of a user terminal in advance in a mobile environment and adaptively providing a streaming service accordingly.

Korean Patent Publication No. 10-2005-0047920, published on May 23, 2005 (name: adaptive streaming apparatus and method)

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide a streaming data transmission method capable of adaptively changing a service quality in consideration of mobility of a terminal when transmitting streaming data to a terminal, The goal is to provide a server.

In particular, when the streaming server determines that the mobile station is to be moved in consideration of the mobility of the mobile station, the streaming server determines the service quality of the streaming data according to the environment of the adjacent cell in the direction of movement, And to provide a streaming data transmission method capable of determining a service quality of streaming data according to a cell environment and a streaming server therefor.

Accordingly, in consideration of the mobile Bible of the terminal, the streaming server detects the streaming service by lowering the quality of the streaming service in advance before the terminal enters the congested cell, thereby providing the streaming data. And a streaming server for the streaming data transmission method.

However, the object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood from the following description.

According to another aspect of the present invention, there is provided a method for transmitting streaming data, the method comprising the steps of: checking whether a streaming server transmits a streaming data to a terminal according to a request from the terminal; Determining a neighboring cell of the connected cell based on a moving direction of the mobile station when it is determined that the mobile station moves in a currently connected cell; Determining a service quality corresponding to the neighboring cell; And transmitting the streaming data encoded according to the determined quality of service to the terminal.

Cell information including congestion information for a cell and information on neighboring neighboring cells is stored in correspondence with identification information of the base station apparatus using information received from the base station apparatus prior to checking the mobility of the terminal The method comprising the steps of:

The step of storing the cell information may include adding a rating to the network environment of the base station apparatus using information received from the base station apparatus, and only when the added level is equal to or higher than a predetermined grade, The cell information can be stored in association with the cell information.

The step of verifying the mobility of the mobile terminal may include checking the movement direction using the sensor information collected from the mobile terminal or using a message related to a handover procedure collected from the mobile terminal or the base station connected to the mobile terminal, Or confirm the mobility of the terminal based on the past movement history in the connected cell.

The checking of the neighboring cell of the connected cell may include receiving identification information of a currently connected base station device from the terminal; And checking a neighboring cell through pre-stored cell information corresponding to the identification information of the base station apparatus.

At this time, the step of confirming the neighboring cell of the connected cell may determine a neighboring cell having a higher probability of the mobile station moving among the plurality of neighboring cells when the neighboring cells are identified.

In addition, the step of determining the quality of service may determine a quality of service with a lower resolution than the current service resolution in consideration of the degree of congestion for the identified neighboring cell.

In addition, if it is determined that the UE has moved out of the neighboring cell after entering the neighboring cell after the transmitting, it may transmit the streaming data encoded with the original quality of service.

Further, the present invention can provide a computer-readable recording medium on which a program for executing the above-described method is recorded.

Further, the present invention can provide a computer program stored in a computer-readable recording medium which is implemented to carry out the method as described above.

According to an aspect of the present invention, there is provided a streaming server comprising: a server communication unit for transmitting and receiving information to and from a terminal and transmitting streaming data to the terminal; And checking the mobility of the terminal when the streaming data is transmitted through the server communication unit to the terminal according to the request of the terminal. If it is determined that the terminal is to be moved in the currently connected connected cell, And a server control unit for determining a service quality corresponding to the identified neighboring cell and controlling the terminal to transmit the streaming data encoded in the determined service quality through the server communication unit, .

And a server storage unit for storing cell information including congestion information on adjacent cells and information on neighboring adjacent cells corresponding to the identification information of the base station apparatus using information received from the base station apparatus, .

At this time, the server control unit confirms the movement direction by using the sensor information collected from the terminal, confirms the mobility using the message related to the handover procedure collected from the terminal or the base station connected to the terminal, The mobility of the terminal can be confirmed based on the past movement history in the cell.

According to the streaming data transmission method and the streaming server for the streaming data transmission method of the present invention, when a streaming server transmits streaming data to the terminal, it can adaptively change the quality of service and transmit the streaming data considering the mobility of the terminal.

Accordingly, in consideration of the mobility of the terminal, the streaming server detects the streaming server before it enters the congested cell, and provides the streaming data by lowering the quality of the streaming service, thereby lowering the image quality that can be perceived by the user Can be minimized, and seamless streaming service can be used.

In addition, various effects other than the above-described effects can be directly or implicitly disclosed in the detailed description according to the embodiment of the present invention to be described later.

1 is a block diagram illustrating a main configuration of a streaming system according to an embodiment of the present invention.
2 is a diagram for explaining a streaming data transmission method according to an embodiment of the present invention.
3 is a data flow diagram illustrating a process of storing cell information for streaming data transmission according to an embodiment of the present invention.
4 to 7 are data flow charts for explaining a streaming data transmission method according to an embodiment of the present invention.
8 is a block diagram illustrating a main configuration of a streaming server according to an embodiment of the present invention.
9 is a flowchart illustrating a method of transmitting streaming data in a streaming server according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS For a more complete understanding of the nature and advantages of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings, in which:

In the following description and the accompanying drawings, detailed description of well-known functions or constructions that may obscure the subject matter of the present invention will be omitted. It should be noted that the same constituent elements are denoted by the same reference numerals as possible throughout the drawings.

The terms and words used in the following description and drawings are not to be construed in an ordinary sense or a dictionary, and the inventor can properly define his or her invention as a concept of a term to be described in the best way It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

In addition, the streaming service described in this specification means providing contents such as audio or moving picture in a streaming manner. Here, the streaming method is a technique in which transmission and playback of a file are performed together to reduce the waiting time and is not limited by the storage capacity of the receiving side. Such streaming can be divided into VOD streaming which provides the stored contents according to the request of the user, and live streaming which broadcasts the content data at a predetermined time. The streaming service described in this specification is preferably a live streaming service, but is not necessarily limited to the above structure.

Hereinafter, a main structure of a streaming system according to an embodiment of the present invention will be described first.

1 is a block diagram illustrating a main configuration of a streaming system according to an embodiment of the present invention.

Referring to FIG. 1, the streaming system of the present invention may include a terminal 100, a base station 200, a cell management server 300, and a streaming server 400. The terminal 100 of the present invention accesses the core network 500 through the base station 200 and communicates with the streaming server 400 via the base station 200 and the core network 500 .

First, the terminal 100 of the present invention is connected to the access network through the base station 200 and the core network 500 according to a request of a user Refers to a user apparatus capable of transmitting and receiving various data. The terminal 100 may perform voice or data communication, and may request streaming data to the streaming server 400 to receive and play the corresponding streaming data.

To this end, the terminal 100 of the present invention can perform a process of scanning a signal transmitted from the base station 200 located within a predetermined radius. The terminal 100 of the present invention is referred to as a base transceiver station (A), a base transceiver station (B), a base transceiver station Quot; 200 " in the case of absence). When there are a plurality of base station apparatuses 200 within a certain radius, the terminal 100 of the present invention selects a specific one of the plurality of base station apparatuses 200 and connects to the selected base station apparatus 200 Can be performed. The process of connecting the terminal 100 with the base station apparatus 200 can be performed using various known procedures.

The terminal 100 of the present invention can be connected to the core network 500 through the connected base station 200 and establish and set up a control session with the streaming server 400 through the core network 500 . Here, the control session may be established according to a TCP (Transmission Control Protocol) communication procedure, but is not limited thereto.

In addition, the terminal 100 of the present invention confirms a streaming data transmission request for a specific content from a user. The streaming data transmission request for the specific content may be input through a URL (Uniform Resource Locator) requesting a specific content from a user through a browser or the like. Then, the terminal 100 accesses a name server such as a DNS (Domain Name Server) to obtain address information (IP address) of the streaming server 400 that provides a streaming service for the corresponding content. Then, the terminal 100 sequentially receives the streaming data from the streaming server 400 on a packet-by-packet basis and sequentially reproduces the streaming data. At this time, the terminal 100 of the present invention can request an MPEG media transport, that is, an MMT packet type content, and receive and play MMT packet type content. In addition, the MMT packets are sequentially received in a streaming form, and the AT 100 can reproduce and process the MMT packets sequentially received in the streaming form.

In order to perform the above-described processes, the terminal 100 of the present invention may include a browser for transmitting and receiving information, a memory for storing a program and a protocol, and a microprocessor for executing and controlling various programs.

Meanwhile, the terminal 100 of the present invention is continuously moved while the user is carrying it. At this time, the base station 200 connected to the terminal 100 continuously performs the connection release and connection process according to the movement of the terminal 100. For example, when the mobile station 100 is connected to the base station apparatus A and movement is generated as indicated by (1), the mobile station 100 disconnects the base station apparatus A and performs a procedure of connecting to the neighboring base station apparatus B can do. In addition, when the mobile station 100 is moved as indicated by (2), the terminal 100 may disconnect the base station B and perform a procedure of connecting to the neighboring base station C

In this environment, the conventional adaptive streaming service has a problem that the terminal 100 simply provides the streaming service considering the environment of the network to which the terminal 100 is currently connected. The streaming server 400 according to the present invention is a system in which the terminal 100 determines that the terminal 100 is to be connected, B network environment, streaming service is provided with the service quality suitable for the network environment before the movement occurs.

The plurality of base station apparatuses 200 performing the above process can transmit a call connection request of the terminal 100 to the core network 500. In addition, the base station apparatus 200 can perform baseband signal processing, wired / wireless conversion, It can perform various functions such as sending and receiving. In this case, the base station apparatus 200 may be implemented in a BTS (Base Station Transmission System) in a synchronous (CDMA) network, and a base station controller (BSC) that controls the base station may be included in the access network. In addition, in the asynchronous (WCDMA) network, the BTS can be replaced with a Node B, and the BSC can be replaced with an RNC (Radio Network Controller). In an LTE (Long Term Evolution) And an MME (Mobility Management Entity). Here, the MME includes an MSC (Mobile Service Control Node) for performing RNC and supplementary service processing in a WCDMA network, subscriber reception and outgoing call processing, And the role of the MSC can be performed almost the same.

In addition, the base station apparatus 200 of the present invention can perform a handover procedure according to the movement of the terminal 100 as described above. At this time, the base station apparatus 200 of the present invention can support the handover process of the UE 100 according to a specific handover protocol such as X2 handover and S1 handover procedure. For example, the handover procedure can measure the strength of a signal transmitted from the base station apparatus 200 in a predetermined radius continuously in a mobile environment. The terminal 100 may transmit the measured signal strength of the cell to the currently connected base station apparatus, for example, the base station apparatus A through a measurement report message. The base station apparatus A determines the target base station apparatus based on the signal strength of the cell received from the terminal 100 and the neighbor cell list information it holds, and transmits a handover required message to the target base station apparatus, for example, The terminal 100 can release the connection with the terminal 100 and support the process of connecting to the base station apparatus B. [

Meanwhile, in the case of the S1 handover procedure, the measurement report message received from the UE 100 is transmitted to the EPC apparatus (not shown) of the core network 500 by the base station apparatus A, This means that the device is determined.

As described above, the terminal 100 and the base station 200 of the present invention can continuously perform a cell connection or a cell connection release in consideration of the moving environment of the terminal 100, The mobile terminal 400 may detect various handover messages generated in the process and determine the mobile environment of the terminal 100 in advance. The quality of the streaming service is varied before the UE 100 enters the cell according to the environment of the cell determined in advance.

The streaming server 400 according to the present invention plays a role of providing various types of contents such as pictures, video, audio, applications and the like to the terminal 100 in a streaming manner. To this end, the streaming server 400 may receive and manage at least one content from a content provider (CP). For example, the streaming server 400 can control a process of receiving specific content such as a professional baseball relay broadcast, a world cup relay broadcast, etc., and converting the received content into a streaming form and managing it from the content providing server of the content provider.

In addition, the streaming server 400 may transmit the content in a streaming manner at the request of the terminal 100. In particular, the streaming server 400 of the present invention can store and manage content in a chunk format divided into a predetermined length after encoding. At this time, the streaming server 400 of the present invention can construct a data packet according to an MMT (MPEG Media Transport) protocol and transmit the data packet converted into the MMT packet to the terminal 100 according to a request of the terminal 100 .

As described above, the streaming server 400 of the present invention stores and builds cell information on the network environment of the base station apparatus 200 in advance, and stores the network environment in which the terminal 100 is expected to move When the network environment of the base station apparatus 200 is congested, the streaming data is lowered to an appropriate quality of service, and the streaming data is encoded and provided, thereby minimizing deterioration in image quality that can be perceived by the user.

The above process will be schematically described with reference to Fig.

FIG. 2 is a diagram for explaining a streaming data transmission method according to an embodiment of the present invention. It is assumed that a user is boarding the transportation means 503 while holding the terminal 100. A, B, C, D, and E exist in the cells A and B that can be connected according to movement of the terminal 100. The cells A and B are congested, the cells C are non-congested, the cells D and E are congested It is assumed that the situation. In this state, the user can continue to travel on the transportation means 503 from the point 501 to the point 502. At this time, when A and B are congested, the streaming server 400 of the present invention is in a state in which the user is transmitting streaming data encoded in FHD (Full High Definition) level before boarding the transportation means 503 , The quality of the streaming service is lowered to the standard definition (SD) level before entering the cell A, and the encoded streaming data is transmitted to the terminal 100. In addition, since the cell C is non-congested, streaming data encoded by raising the quality of the service to FHD level before the entry of C is transmitted to the terminal 100. Since the cells D and E are congested areas, The quality of the streaming service is lowered before entering the cell, thereby minimizing the influence of the image quality that the user can recognize when entering the cell and providing seamless streaming service.

When the streaming server 400 of the present invention determines that the cell in the direction of movement of the terminal 100 is congested, the terminal 100 may transmit the streaming data after lowering the quality of service, If it is judged that it is out of order, it is also possible to restore the original quality of service and transmit the streaming data again. That is, the streaming server 400 of the present invention may determine streaming data by checking the network environment of a cell to which the terminal 100 desires to move, and may transmit the streaming data. However, in general, The streaming server 400 of the present invention transmits the streaming data by lowering the service quality before the terminal 100 enters the corresponding cell area, If it is determined, the service quality may be restored to its original state and the streaming data may be immediately transmitted.

More specifically, the streaming data transmission method in the streaming server will be described later.

Meanwhile, the cell management server 300 of the present invention can perform a role of storing and managing cell information transmitted by a plurality of base station apparatuses 200. The cell management server 300 of the present invention can monitor and detect information transmitted and received between the terminal 100 and the base station 200. The cell management server 300 can collect the collected cell information and the cell information between the terminal 100 and the base station 200 And transmits the generated various information to the streaming server 400. The cell management server 300 and the streaming server 400 are connected to a single device 400. The cell management server 300 and the streaming server 400 are connected to each other via a network, . ≪ / RTI >

As described above, the core network 500 is a network system that performs main functions for mobile communication services such as mobility control and switching, performs circuit switching or packet switching, And manages and controls packet flow in the mobile network. In addition, the core network 500 manages inter-frequency mobility and may perform a role for interworking with the base station apparatus and traffic in the core network 500 and other networks, e.g., the Internet network (not shown). The core network 500 may include a Mobile Switching Center (MSC), a Home Location Register (HLR), a Mobile Mobility Entity (MME), and a Home Subscriber Server (HSS).

The processor mounted on the terminal 100, the base station 200, the cell management server 300 and the streaming server 400 according to the embodiment of the present invention processes a program command for executing the method according to the present invention can do. In one implementation, the processor may be a single-threaded processor, and in other embodiments, the processor may be a multithreaded processor. Further, the processor is capable of processing instructions stored on a memory or storage device.

Hereinafter, a streaming data transmission method according to an embodiment of the present invention will be described.

In order to transmit streaming data according to an embodiment of the present invention, the streaming server 400 must store cell information on the network environment of the base station 200 in advance.

The above process will be described with reference to FIG.

3 is a data flow diagram illustrating a process of storing cell information for streaming data transmission according to an embodiment of the present invention.

Referring to FIG. 3, a plurality of base station apparatuses 200a, 200b, and 200c transmit cell information to the cell management server 300 on a predetermined cycle or on a real-time basis. Here, the cell information may be configured to include identification information of the base station apparatus, congestion information of the cell, and information on neighboring neighboring cells. Here, the congestion information of the cell may mean, for example, the number of connected terminals 100, but it is not limited thereto, and congestion degree of the cell can be confirmed by using various information.

In addition, information of neighboring neighboring cells may be confirmed through a list of neighboring cells held by the base station 200 or through a measurement report message collected from the terminal 100. In addition, the adjacent cell defined in the specification of the present invention may mean a close physical distance between the base station apparatuses 200, but the cell coverage may refer to the neighboring base station apparatus 200. For example, although the base station apparatus A 200a and the base station apparatus B 200b are located in close proximity to each other, the cell coverage of the base station apparatus B 200b is small and is located at a geographical remote location from the base station apparatus C 200c, When the cell coverage of the apparatus C 200c is larger than that of the base station apparatus A 200a, the base station apparatus A 200a can determine that the base station apparatus C 200c is a neighboring cell.

In this way, each of the base station apparatuses 200a, 200b, and 200c can transmit cell information indicating the network environment of the cell to the cell management server 300 (S101 to S105). In addition, although each of the base station apparatuses 200a, 200b, and 200c sequentially transmits cell information to the cell management server 300 in the figure, the process may be simultaneously transmitted.

Then, the cell management server 300 of the present invention can directly transmit the collected cell information to the streaming server 400, specifically checking the congested cell (S107), processing the cell information of the congested cell, 400 (S109). Here, the cell management server 300 of the present invention classifies the network environment of each of the base station apparatuses 200a, 200b, and 200c using the cell information collected from each of the base station apparatuses 200a, 200b, and 200c can do. Here, the grades may be added in grades of, for example, 1, 2, 3, and 4 stages, and may be added in various ways in consideration of various embodiments. When the added class is equal to or higher than the predetermined class, the cell management server 300 of the present invention checks the corresponding base station device as a congested cell only when the added class corresponds to, for example, Or may be transmitted to the server 400.

The streaming server 400 can store the information transmitted from the cell management server 300 (S111), and can then provide an adaptive streaming service using the information stored in the terminal 100. [ At this time, the streaming server 400 of the present invention may provide an adaptive streaming service in a form suitable for the class, when the cell information having the rating is received from the cell management server 300. For example, if the cell information corresponding to the first to third steps is confirmed as in the above-mentioned example, the streaming data is encoded in advance with the service quality (FHD, HD, SD) suitable for each step and stored, You may.

In the embodiment of the present invention, the cell management server 300 is constructed, and the cell management server 300 receives the information transmitted from the base station 200 and selects or processes the received information. However, When the cell management server 300 and the streaming server 400 are implemented as a single device, the streaming server 400 directly receives cell information from a plurality of base station apparatuses 200, Information may be stored in correspondence with the identification information of the base station apparatus 200 or a class may be added on the basis of the cell information, and a congestion cell may be determined and stored and managed only when the class is higher than a predetermined grade.

Hereinafter, a streaming data transmission method according to the present invention will be described with reference to FIG. 4 to FIG.

4 to 7 are data flow charts for explaining a streaming data transmission method according to an embodiment of the present invention.

Referring to FIG. 4, it is assumed that the terminal 100 of the present invention is connected to the base station apparatus A 200a. Since the connection procedure between the terminal 100 and the base station apparatus A 200a is performed according to a known procedure, a detailed description will be omitted.

In this state, the terminal 100 of the present invention can establish a control session with the streaming server 400 through the connected base station apparatus A 200a (S201). Here, the control session may be established according to a TCP (Transmission Control Protocol) communication procedure, but is not limited thereto.

Then, the terminal 100 requests the streaming server 400 for the streaming data through the set control session (S203). At this time, the terminal 100 may transmit the identification information of the base station apparatus 200a, which is a connected cell, to the streaming server 400, and the streaming server 400 may store the identification information of the base station apparatus 200a Through the cell information, the terminal 100 can recognize the connected cell currently connected and check the congestion degree of the connected cell.

When the streaming server 400 of the present invention stores all the cell information, it checks the pre-stored cell information using the identification information of the base station apparatus A 200a. If the network environment of the base station apparatus A 200a is If the streaming server 400 of the present invention selectively stores only the information on the congested cell, if the cell information corresponding to the identification information of the base station apparatus A 200a is not stored , The streaming server 400 may determine that the connected cell to which the terminal 100 is currently connected is not in a congested state.

When the information on the network environment is confirmed through the above process, the streaming server 400 can determine the service quality according to the corresponding information, and sequentially transmits the streaming data encoded with the determined service quality to the terminal 100 (S209 ). Then, the terminal 100 of the present invention can sequentially receive and reproduce the received data (S211).

Meanwhile, the streaming server 400 of the present invention may perform a process of checking cell information on a cell to be moved, not a currently connected cell, considering the mobile environment of the UE 100 in step S205.

Referring to FIG. 5, the terminal 100 can request streaming data to the streaming server 400 through a set control session in a state where the terminal 100 is connected to the base station apparatus A 200a (S301) . Since the request includes the identification information of the base station apparatus, the streaming server 400 identifies a connection cell corresponding to the identification information of the base station apparatus. The streaming server 400 of the present invention confirms the possibility of movement of the terminal 100.

At this time, the streaming server 400 of the present invention collects various types of sensor information from the terminal 100, and can check whether or not the terminal 100 is moving and information about the moving direction through the collected sensor information. For example, various sensor information including acceleration information, GPS information, and the like is received from the terminal 100 and it can be confirmed that the terminal 100 is moving at a speed of 50 km in the north direction, for example.

Meanwhile, the streaming server 400 of the present invention can confirm the mobility of the terminal 100 using a message related to various handover procedures occurring between the terminal 100 and the base station 200a. That is, as described above, the terminal 100 can transmit the strength of the received signal to the neighboring cell to the periodically connected base station apparatus A 200a through the measurement report message. The base station apparatus A 200a can transmit the strength of the received signal to the terminal 100, A handover may be performed using the measurement report message received from the mobile terminal. In addition, the base station apparatus A 200a may directly interwork with the core network or directly determine the target base station apparatus. The streaming server 400 receives messages generated in the above process through the cell management server 300 or directly monitors the messages Messages. When the messages related to the handover procedure are generated, the streaming server 400 of the present invention determines that the UE 100 moves, checks the adjacent cell in the currently connected cell using the stored cell information, The target base station apparatus included in the message related to the over procedure can be identified and the neighboring cell can be identified.

In addition, the streaming server 400 of the present invention can check the mobility of the terminal through the past movement history of the terminal 100 of the user or the terminal 100 of another user. For example, if the user of the terminal 100 has taken a subway at point A and has gotten off at point B, the streaming server 400 can confirm the direction in which the terminal 100 wants to move through the movement history. The movement history may comprehensively consider information that may be generated in the terminal 100 of the user as well as in the terminal 100 of another user. For example, in the case of the movement of the user using the public transportation means, the movement is performed through the designated path. Therefore, the streaming server 400 of the present invention determines whether or not the terminal 100 is moving through the movement history, You can check the information on.

In addition, the process of confirming the mobility may be performed according to a specific condition. For example, when the mobility is confirmed using the sensor information and the information is detected by the sensor or a plurality of designated sensors, the terminal 100 determines the mobility based on the sensor information and notifies the streaming server 400 of the mobility , And transmits the sensor information to the streaming server 400 so that the mobility determination in the streaming server 400 can be performed. In addition, when a message related to the handover procedure is used, when a message including identification information (e.g., eNBID, PCID, etc.) of the base transceiver station transmitted from the terminal 100 to the base transceiver station 200 is generated, (400) can confirm the mobility of the terminal (100).

In addition, the streaming server 400 of the present invention can simultaneously check the mobility in consideration of various conditions. For example, when a message including the identification information of the base station 200 occurring in the process of cell connection is generated, the streaming server 400 collects sensor information of the terminal 100, The mobility can also be determined.

If it is determined that the terminal 100 is to be moved through this process, the streaming server 400 of the present invention can confirm the neighboring cell of the currently connected connected cell, for example, the base station B 200b through the stored cell information (S307 ). The streaming server 400 of the present invention can determine whether neighboring cells are congested or non-congested using the stored cell information (S309). That is, it is possible to confirm that the base station apparatus B 200b is a neighboring cell using the pre-stored cell information corresponding to the base station apparatus A 200a, and to confirm that the base station apparatus B 200b, It is possible to determine whether the neighboring cell is congested or not using the cell information of the neighboring cell.

After that, the streaming server 400 of the present invention determines the quality of service according to the congestion information of the neighboring cell (S311), and transmits the streaming data corresponding to the determined quality of service (S313). In addition, if the adjacent cell is not congested in step S311, the streaming server 400 can maintain the original quality of service.

Meanwhile, the terminal 100 receives the streaming data sequentially received from the streaming server 400 in step S313, and can reproduce the streaming data seamlessly without discerning a decrease in image quality (S315).

Hereinafter, reproduction of streaming data in an environment in which the terminal 100 moves to the base station apparatus B 200b will be described.

That is, as shown in FIG. 6, the terminal 100 of the present invention disconnects from the base station apparatus A 200a according to movement, and can be connected to the base station apparatus B 200b (S401). In this case, when the environment of the base station apparatus B 200b is congested, the streaming server 400 considers the congested environment of the base station apparatus B 200b before the movement of the terminal 100 occurs, And transmits the encoded streaming data to the terminal 100.

Then, the terminal 100 of the present invention continuously requests streaming data (S403), and the streaming server 400 confirms the connected cell information of the current terminal 100 and transmits streaming data according to the corresponding service quality (S405).

In this state, the streaming server 400 of the present invention can continuously check the mobility of the terminal 100 according to the streaming data transmission request of the terminal 100 (S411). At this time, if the mobility of the terminal 100 is not confirmed, the streaming server 400 transmits the streaming data according to the quality of service considering the environment of the connected cell to which the terminal 100 is connected.

On the other hand, if the mobility of the terminal 100 is confirmed (S411), the streaming server 400 may perform a process of identifying a neighboring cell of the base station located in a direction in which the terminal 100 is to be moved (S413) . In this case, when there are a plurality of neighboring cells, the streaming server 400 of the present invention can perform a process of selecting a neighboring cell having a higher possibility of moving among a plurality of neighboring cells. For example, if the streaming server 400 of the present invention determines that the terminal 100 is moving at a speed of 50 km in the north direction through the sensor information collected from the terminal 100, It is possible to determine a cell located in the north direction as an adjacent cell.

In addition, if the mobility of the terminal 100 is confirmed using the message related to the handover procedure, the streaming server 400 of the present invention checks the message related to the handover procedure to determine whether information of the target base station apparatus exists And determine the neighboring cell using the information of the identified target base station apparatus.

In addition, when the movement history is used, the streaming server 400 of the present invention can determine an adjacent cell considering the number of movements generated in the terminal 100 or the terminal 100 of another user.

When the neighboring cell is determined through the above process, the neighboring cell information is confirmed (S413), and it is checked whether the neighboring cell is congested (S415). The streaming server 400 of the present invention determines the quality of service according to neighbor cell information and transmits the corresponding streaming data to the terminal 100 via the base station B 200b S421).

For example, when the terminal 100 is moved and connected from the base station apparatus B 200b to the base station apparatus C 200c, the terminal 100 transmits the streaming server 400 The streaming server 400 determines the service quality using the connected cell information currently connected (S505 to S507). If the mobility of the terminal 100 is not determined, If the mobility of the mobile station 100 is determined, it is possible to determine the quality of service considering the environment for the neighboring cell and to transmit corresponding streaming data (S509 to S513).

In an embodiment of the present invention, the streaming server 400 of the present invention continually checks the mobility of the terminal 100, determines the quality of service considering the congestion of neighboring cells to be moved, and then encodes the streaming data The present invention is not limited to this.

For example, if the environment of the network is generally excellent and an exceptionally congested situation occurs only in a specific cell region, the streaming server 400 of the present invention may be configured such that when the neighboring cell to which the terminal 100 is intended to move is congested After the streaming data is transmitted after lowering the quality of service, if it is determined that the cell has entered the cell and is out of the cell, the streaming data is restored to the original quality of service immediately without checking the degree of congestion for the next cell It is possible.

Hereinafter, the main configuration and operation of the streaming server 400 according to the embodiment of the present invention will be described.

Hereinafter, the main configuration and operation of the streaming server 400 according to the embodiment of the present invention will be described.

8 is a block diagram illustrating a main configuration of a streaming server according to an embodiment of the present invention.

1 and 8, the streaming server 400 of the present invention may include a server communication unit 410, a server control unit 420, and a server storage unit 430.

The server communication unit 410 of the present invention transmits and receives information via the terminal 100, the base station 200, and the core network 500. In particular, the server communication unit 410 of the present invention establishes a control session with the terminal 100 to transmit / receive various information to / from the terminal 100, and can transmit streaming data to the terminal 100. In addition, the server communication unit 410 of the present invention can exchange various information with the cell management server 300.

The server control unit 420 is configured to perform overall control of the streaming server 400 according to an embodiment of the present invention and includes a cell information management module 421, a service provision module 422, and a service quality processing module 423 And the like. The term 'module' used in the embodiment of the present invention means a software component, and 'module' performs certain roles. By way of example, '~ module' may include components such as software components, object-oriented software components, class components and task components, and processes, functions, attributes, procedures, Routines, segments of program code, drivers, data, databases, data structures, tables, arrays, and variables. In addition, the functions provided in the components and 'modules' may be combined into a smaller number of components and '~ modules' or further separated into additional components and 'modules'.

More specifically, the cell information management module 421 may store and manage cell information transmitted from a plurality of base station apparatuses 200. Here, the cell information may be configured to include congestion information for a cell and information on neighboring neighboring cells corresponding to the identification information of the base station apparatus 200. [ At this time, the cell information management module 421 of the present invention may check the congested cell through the cell information and store only the cell information on the congested cell in the server storage 430.

The service providing module 422 performs overall control of the streaming data transmission process of the present invention and connects the control session according to the 3-way handshaking method of the TCP communication with the terminal 100, It plays a role of judging. Also, if it is determined that the terminal 100 is to be moved, the service providing module 422 can determine the neighboring cell of the connected cell and the service quality corresponding to the neighboring cell in consideration of the moving direction of the terminal 100. The service providing module 422 of the present invention can control the process of transmitting the streaming data corresponding to the service quality to the terminal 100 through the server communication unit 410.

The service quality processing module 423 may encode the streaming data according to the quality of service. The service quality processing module 423 may perform a process of encoding the streaming data for each service quality, for example, FHD, HD, and SD, and then storing the streaming data in the server storage unit 430. However, the present invention is not limited to this, and it is possible to immediately change the encoding of the streaming data according to the cell environment of the terminal 100 and to control the process of providing the streaming data to the terminal 100 through the service providing module 422.

The server storage unit 430 may store and manage various types of information necessary for performing operations of the streaming server 400 according to an embodiment of the present invention. In particular, the server storage unit 430 of the present invention can store and manage cell information 431 collected from a plurality of base station apparatuses 200. Here, the cell information may be collected directly from the plurality of base station apparatuses 200, and collected through the cell management server 300.

The server storage unit 430 may include a program area and a data area. The program area stores information related to the operation of the streaming server 400. The data area is an area where various data generated according to the operation of the streaming server 400 of the present invention is stored, and various commands for streaming data processing can be stored as described above. The server storage unit 430 may include a flash memory, a hard disk, a memory of a multimedia card micro type such as an SD or XD memory, a RAM, (ROM), and the like.

The main configuration and operation method of the streaming server 400 according to the embodiment of the present invention have been described above.

The streaming server 400 according to the embodiment of the present invention has the same hardware configuration as that of a typical web server or a network server. However, the software includes a program module implemented through a language such as C, C ++, Java, Visual Basic, Visual C, or the like.

Although the present specification and drawings describe exemplary device configurations, the functional operations and subject matter implementations described herein may be embodied in other types of digital electronic circuitry, or alternatively, of the structures disclosed herein and their structural equivalents May be embodied in computer software, firmware, or hardware, including, or in combination with, one or more of the foregoing. Implementations of the subject matter described herein may be embodied in one or more computer program products, i. E. One for computer program instructions encoded on a program storage medium of the type for < RTI ID = 0.0 & And can be implemented as a module as described above. The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter that affects the machine readable propagation type signal, or a combination of one or more of the foregoing.

A method of transmitting streaming data from the streaming server 400 of the present invention will be described.

9 is a flowchart illustrating a method of transmitting streaming data in a streaming server according to an embodiment of the present invention.

The streaming server 400 of the present invention collects cell information about the base station 200 in advance in real time or on a constant cycle basis in order to adaptively provide the streaming service in consideration of mobility of the terminal 100 And store it. This process may be performed in conjunction with the cell management server 300, and the streaming server 400 may directly collect cell information through the base station 200. [

In this state, referring to FIG. 9, the streaming server 400 of the present invention receives a streaming data request from the terminal 100 (S601).

Then, the streaming server 400 confirms the currently connected cell information of the terminal 100 (S603). The streaming server 400 of the present invention determines the mobility of the terminal 100 (S605). The process may also be performed before step S603.

In addition, the streaming server 400 of the present invention confirms adjacent cell information using currently connected cell information (S607). At this time, if there are a plurality of neighboring cells identified, the streaming server 400 may determine a neighboring cell having a higher possibility of moving (S611). For example, the neighboring cell is determined by determining the mobility of the terminal 100 by using the sensor information collected from the terminal 100. When a plurality of neighboring cells are determined, the streaming server 400 transmits It is possible to determine an adjacent cell having a higher possibility of moving by confirming the past movement history. In addition, when there is a message related to the handover procedure between the terminal 100 and the base station 200, since the accuracy of the message related to the handover procedure is higher, Can be determined.

When the neighboring cell is determined through this process, the streaming server 400 of the present invention checks the congestion degree of the determined adjacent cell (S611 to S613).

The streaming server 400 of the present invention may encode the streaming data in consideration of the degree of congestion of the neighboring cell and transmit the encoded streaming data to the terminal 100 in operation S615.

The streaming data transmission method according to the embodiment of the present invention has been described above.

The streaming data transmission method of the present invention as described above may be provided in the form of a computer-readable medium suitable for storing computer program instructions and data.

In particular, the computer program of the present invention is characterized in that the streaming server confirms the mobility of the terminal when transmitting streaming data to the terminal according to a request of the terminal. If it is determined that the terminal is to be moved in the currently connected connected cell, Determining a service quality corresponding to the neighboring cell, and transmitting the streaming data encoded according to the determined service quality to the terminal, have.

In order to allow the computer to read the program recorded on the recording medium and to execute the functions implemented by the program, the computer program described above may be stored in a computer such as a C, C ++ , JAVA, machine language, and the like, and code for a program command encoded in a computer language.

The code may include a function code related to a function or the like that defines the functions described above and may include an execution procedure related control code necessary for the processor of the computer to execute the functions described above according to a predetermined procedure. In addition, such code may further include memory reference related code as to what additional information or media needed to cause the processor of the computer to execute the aforementioned functions should be referenced at any location (address) of the internal or external memory of the computer . In addition, when a processor of a computer needs to communicate with any other computer or server that is remote to execute the above-described functions, the code may be stored in a memory of the computer using a communication module of the computer, It may further include a communication-related code such as how to communicate with another computer or a server, and what information or media should be transmitted or received during communication.

Also, while the present invention describes operations in the figures in a particular order, it should be understood that it is to be understood that it is to be understood that it is the task of performing such operations in the specific order or sequential order shown to obtain the desired result, Can not be done. Also, the separation of the various system components of the above-described embodiments should not be understood as requiring such separation in all embodiments, and the described program components and systems will generally be integrated together into a single software product or packaged into multiple software products It should be understood.

The present invention relates to a streaming service, and more particularly, to a streaming service in which when a streaming server transmits streaming data to a terminal, considering the mobility of the terminal, if the terminal is determined to move, The present invention relates to a streaming data transmission method and a streaming server for determining a quality of a streaming data and determining a service quality of the streaming data according to an environment of a currently connected cell when the terminal is determined not to move, It is possible to provide the streaming service more adaptively in consideration of the environment where the streaming service is performed.

In addition, the present invention can contribute to the development of the streaming service industry when the above-described configuration of the present invention is applied. In addition, since the present invention has a possibility of being commercially available or operating, There is a possibility.

100: terminal 200: base station apparatus
300: cell management server 400: streaming server
410: server communication unit 420: server control unit
421: Cell information management module 422: Service provision module
423: service quality processing module 430: server storage unit
431: cell information 500: core network

Claims (13)

The streaming server,
Confirming the mobility of the terminal when transmitting streaming data to the terminal according to a request of the terminal;
Determining a neighboring cell of the connected cell based on a moving direction of the mobile station when it is determined that the mobile station moves in a currently connected cell;
Determining a service quality corresponding to the neighboring cell; And
Transmitting streaming data encoded according to the determined service quality to the terminal;
And transmitting the streaming data. The method according to claim 1,
Before the step of confirming the mobility of the terminal,
Storing cell information including congestion information for a cell and information on neighboring adjacent cells corresponding to identification information of the base station apparatus using information received from the base station apparatus;
And transmitting the streaming data. 3. The method of claim 2,
The step of storing the cell information
Adding the class to the network environment of the base station apparatus using the information received from the base station apparatus and storing the cell information corresponding to the identification information of the base station apparatus only when the added class is equal to or higher than a predetermined grade Stream data transmission method. The method according to claim 1,
The step of confirming the mobility of the terminal
The mobile terminal checks the movement direction using the sensor information collected from the terminal or confirms the mobility using a message related to the handover procedure collected from the terminal or the base station connected to the terminal, And checking the mobility of the terminal based on the history. The method according to claim 1,
Wherein identifying the neighboring cell of the connected cell comprises:
Receiving identification information of a currently connected base station apparatus from the terminal; And
Identifying an adjacent cell through pre-stored cell information corresponding to the identification information of the base station apparatus;
And transmitting the streaming data. The method according to claim 1,
Wherein identifying the neighboring cell of the connected cell comprises:
Wherein the neighboring cell determining unit determines a neighboring cell having a higher probability of the mobile station moving among the plurality of neighboring cells when the determined neighboring cell is a plurality of neighboring cells. The method according to claim 1,
The step of determining the quality of service
And determining a service quality of a resolution lower than a current service resolution in consideration of the congestion degree of the neighboring cell. The method according to claim 1,
After the transmitting step,
Transmitting the streaming data encoded with the original quality of service if the UE enters the neighboring cell and then determines that the neighboring cell is out of the neighboring cell;
And transmitting the streaming data. A computer-readable recording medium storing a program for executing the method according to any one of claims 1 to 8. A computer program stored in a computer-readable recording medium, the computer program being embodied to perform the method recited in any one of claims 1 to 8. A server communication unit transmitting and receiving information to and from the terminal and transmitting streaming data to the terminal; And
The mobile terminal checks the mobility of the terminal when the streaming data is transmitted through the server communication unit to the terminal according to the request of the terminal and if it is determined that the terminal is to be moved in the currently connected connected cell, A server control unit for checking a neighboring cell, determining a service quality corresponding to the identified neighboring cell, and controlling the terminal to transmit the streaming data encoded in the determined service quality through the server communication unit;
The streaming server comprising: 12. The method of claim 11,
A server storage unit for storing cell information including congestion information for a cell and information on neighboring adjacent cells corresponding to identification information of the base station apparatus using information received from the base station apparatus;
The streaming server further comprising: 12. The method of claim 11,
The server control unit
The mobile terminal checks the movement direction using the sensor information collected from the terminal or confirms the mobility using a message related to the handover procedure collected from the terminal or the base station connected to the terminal, And checks the mobility of the terminal based on the history.

Images