KR101048190B1 - Method and apparatus for automatically blocking image transmission within image restriction area - Google Patents

Abstract

The present invention relates to a method and apparatus for automatically limiting video transmission and reception without a user's special setting in a certain area where a video call needs to be restricted for security reasons in a third generation mobile communication service providing a video call. In this regard, the automatic image transmission blocking method of the present invention comprises the steps of receiving information before the call establishment from the base station controller via the terminal before the call setting and whether the terminal is in the image restriction area and the call establishment request from the terminal in the image restriction area. If present, the step of transmitting another image to the called terminal instead of the image transmitted from the terminal. According to the present invention, it is possible to prevent intentional or unintentional leakage of information in areas where security is required, such as national secrets or corporate secrets, and to prevent national loss, and to automatically transmit images without moving or removing existing facilities. Since blocking can be implemented, this service can be provided to users without excessive cost.

Video Call, Video Call, Video Call, 3G, Video Restriction Area, Auto Block

Description

Method and Apparatus for Automatically Blocking Image Transmission in Restricted Areas {Method and Apparatus for Intercepting Video Telephony Automatically in Restricted Area}

The present invention relates to a method and apparatus for automatically blocking video transmission by a mobile communication terminal in a mobile communication system. More specifically, it is necessary to restrict a video call for security reasons in a third generation mobile communication service providing a video call. The present invention relates to a method and apparatus for preventing damage caused by confidential leakage and invasion of privacy by automatically limiting video transmission and reception without user's special setting in a certain area, and preventing excessive cost caused by relocation or removal of existing facilities. .

With the rapid development of communication technology, various wireless communication services using a wireless communication network have been provided. In particular, the mobile communication service has evolved over several generations, and recently, a third generation mobile communication service using a wideband code division multiple access (WCDMA) network has been provided. One of the characteristics of the 3G mobile communication service is a video call service. The video call service is a service that allows users to exchange video and audio with each other at the same time and make a call. When a caller's mobile terminal transmits a video / audio signal to a receiver, the receiver transmits the video / audio signal transmitted by the caller to his / her mobile device. It is a method of viewing and listening to a caller's call by receiving from a communication terminal.

On the other hand, the terminal used in the video call service has a video transmission prohibition function, if the user wants to be able to talk only by voice without sending the image of the terminal to the other party. However, if the user does not activate such a function, the terminal automatically sends a video captured in real time to the other party through the camera. That is, in the related art, if the image captured by the camera attached to the user's terminal does not want to be transmitted to the counterpart, the user has to directly operate his terminal. In this case, in a region where security is required, such as a government agency or a research institute of a company, the user has to operate his terminal every time in order to prohibit the transmission of video information. In addition, if a video call is made without the user's inadvertent transmission of information in such a secure area, it may lead to a serious problem such as an accidental leakage of state secrets or corporate secrets.

Therefore, due to this problem, certain companies or organizations set certain areas requiring security as security zones, and require the mobile service provider to change the system so that video transmission is automatically prohibited when a call is made in such a security zone. . However, according to the related art, the mobile communication service provider has no choice but to relocate or remove the base station or repeater to block the transmission of images when the automatic transmission of images is requested. In this case, excessive costs are consumed in relocating or removing the existing equipment, and in particular, in the case of removing the existing equipment, there is a problem in that it is impossible to make a voice call service.

Therefore, in the present invention, when a user enters a video restricted area in a mobile communication network providing a video call service, the user is informed that the user is in a video restricted area through a terminal, and the video is transmitted when the user attempts a video call within the video restricted area. It is an object of the present invention to provide a method and system that can automatically block video transmission without moving or removing the existing equipment by providing only a voice call service.

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

In order to achieve the above object, the present invention provides a method of automatically blocking image transmission by a mobile communication terminal in a mobile communication system, wherein information about whether a terminal is within an image restriction area is transmitted from a base station controller via the terminal. Receiving before the setting and if there is a call setup request from the terminal in the image restriction area, and transmitting a different image to the called terminal instead of the image transmitted from the terminal.

The present invention also provides a method for automatically blocking image transmission by a mobile communication terminal in a mobile communication system including a main exchange, a base station controller, and a base station. Transmitting prior to call setup to the terminal, receiving information on whether the terminal is in the video restricted area before the call setup from the terminal, and requesting a call setup from the terminal in the video restricted area. In this case, the main exchange may include transmitting another picture to the called terminal instead of the picture transmitted from the terminal.

In another aspect, the present invention provides a method for automatically blocking image transmission in a mobile communication terminal in an image restriction area, the method comprising receiving information from a base station controller on whether or not the terminal is in an image restriction area, wherein the terminal is located within the image restriction area. And transmitting information on whether there is information or not to the main exchange and indicating to the output device that the terminal is in an image restriction area so that image transmission is impossible.

In addition, the present invention is a device for automatically blocking the transmission of the image by the mobile communication terminal in a mobile communication system, the base station controller, the base station and the communication unit for transmitting and receiving data to and from the base station controller via the communication unit via the communication unit The location of the terminal is determined by information on whether the terminal exists in the image restriction area of the received terminal, and when there is a call setup request from the terminal in the image restriction area, the other image is displayed instead of the image transmitted from the terminal. It is another feature that the control unit for transmitting to the called terminal through the communication unit.

According to the configuration of the present invention as described above, when a mobile communication network user who provides a video call service enters the video restriction area preset by the mobile service provider, the mobile communication network user is located in the video restriction area through the base station controller to the user's terminal. And the terminal informs the main exchange again to provide a way for the main exchange to automatically block the transmission of images, thereby preventing the intentional or unintentional leakage of information from areas that require security, such as state secrets or trade secrets. This can prevent national losses.

In addition, the mobile communication service provider who is required to set up a video restriction area from the user's side can implement automatic blocking of image transmission without relocation or removal of existing facilities, so that this service can be provided to the user without excessive costs. There is this.

The above objects, features, and advantages will be described in detail with reference to the accompanying drawings, whereby those skilled in the art to which the present invention pertains may easily implement the technical idea of the present invention. In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a simplified configuration diagram of a mobile communication system currently commercially available. As shown in FIG. 1, the mobile communication system includes terminals 100 and 112, base stations 102 and 110, base station controllers 104 and 108, and a main exchange 106. The base station controller is also called a radio network controller (RNC), and performs handover, power control, admission control, congestion control, and the like between the main exchange 106 and the base stations 102 and 110. The main exchange 106 analyzes the information sent from the base station controllers 104 and 108 and switches to the other base station controller.

We will look at the process of establishing a call in such a communication system. For example, suppose that User A calls User B. User A first enters User B's phone number through his terminal and then presses the call button. Then, the user A receives the call setup request signal from the base station 102 where the user is currently located and transmits the information to the base station controller 104 connected with the base station 102. The base station controller 104 informs the main exchange 106 that is connected to the base station 106, and the main exchange 106 sends a call setup request signal to the base station controller 108 managing user B. The base station controller 108 receiving the signal sends a signal to the base station 110 to make a call connection with the user B to make a call connection with the terminal 112 of the user B. In this case, when the user's terminal is a terminal capable of making a video call, not only the voice of the other party but also a real-time image photographed through a camera attached to the terminal is transmitted to the other party.

2 is a flowchart illustrating a general call processing procedure in an asynchronous mobile communication system. For convenience, only the base station, the base station controller, and the main exchange are shown in the calling terminal. Even before a call establishment request is made through the terminal by the user, the terminal maintains the connection state through signal communication with the base station. In this idle state, the base station controller generates a system information block (SIB) message containing system information useful for the terminal (200). The base station controller sends this SIB message to the base station (202) and the base station sends it back to the terminal (204). The SIB message includes base station identifier information and a private network entry command, and the terminal obtains various information necessary for call setup through this SIB message received from the base station.

When the user tries to make a call by pressing a call button of the terminal, the calling terminal and the calling base station controller set a signaling radio bearer (SRB) for transmitting and receiving signaling messages (RRC connection setup process). (206). This is a process of establishing a path for transmitting and receiving a message between the calling terminal and the mobile communication system, and all call processing starts from the RRC (Radio Resource Control) connection setting process.

When the SRB setup process is completed, the calling terminal transmits a service request message to the mobile communication system through the signaling channel configured above. The home location register of the mobile communication system performs an authentication process including whether the calling terminal is a normal subscriber and whether or not it has a service right after receiving a service request message transmitted from the calling terminal, The encryption related information on the traffic between the mobile communication systems is transmitted to the calling mobile communication terminal (208). In the service request and authentication process, the terminal transmits a location registration message to the main exchange informing the main exchange of its current location, and the main exchange sends a location registration response message to the terminal in response.

Subsequently, the calling terminal and the mobile communication system perform a radio access bearer (RAB) setting step, which is a process of establishing a path for user traffic (210). Here, a traffic radio bearer is set between the calling terminal and the base station controller, and a RAB is set between the calling terminal and the core network by setting up a bearer between the base station controller and the core network.

 The called terminal transmits the paging to the called mobile communication terminal upon receiving the incoming request message transmitted from the calling terminal. After that, when the called terminal receives the paging transmitted from the incoming communication, the paging response is sent to the mobile communication system. The same SRB setup procedure as step 206 is performed to transmit. As the called terminal transmits a paging response message to the mobile communication system through the SRB set above, the mobile communication system performs an authentication procedure for the called mobile communication terminal. Here, since the procedure of authenticating the incoming mobile communication terminal is the same as the authentication procedure of step 208, detailed description thereof will be omitted.

Subsequently, a procedure of setting up a traffic radio bearer of the terminating mobile communication terminal is performed, which is the same as setting up the radio access bearer mentioned in step 210. A ring is transmitted to the called mobile communication terminal, and a call is performed with the call open between the calling mobile terminal and the called mobile communication terminal according to a user's selection (Alerting and Connect process) (212), (Data Flow) (214). Thereafter, the call connection between the calling mobile terminal and the called mobile terminal is released (216).

3 is an exemplary view illustrating block types of system information used in an asynchronous mobile communication system. Referring to FIG. 3, a master information block (MIB) for controlling all system information blocks, a scheduling block including a schedule for providing system information blocks, and system information block types are illustrated. The cell ID parameter is included in system information block (SIB) types # 3 and # 4. In the idle state, the terminal provides the cell ID through SIB # 3, and in the connected state, the terminal provides the cell ID through the control message of the SIB # 4 and the control channel.

4 is a diagram illustrating an automatic image blocking process according to an embodiment of the present invention. First of all, in order for the automatic image blocking process to be performed, a government agency or a company requires a mobile communication service provider to set a certain area as a video restriction area, and the mobile communication service provider requests a base station in charge of the area. You must enter location information. Then, the base station controller in charge of the base station can grasp information on which base station corresponds to the image restriction zone.

The base station controller now generates a SIB message for the base station set as the picture restriction area, and indicates that the picture restriction area is a certain bit of the cell ID parameter of the SIB message (400). For example, the base station controller may indicate that the corresponding area is an image limited area by toggling the upper 16th bit of the cell ID parameter of the SIB message to '1'. The base station controller sends a SIB message containing this indication to the base station (402). If the terminal enters the video restricted area in an area other than the video restricted area, an SIB message indicating that the video restricted area is received from the base station (404), and the terminal transmits to the current video restricted area through the SIB message. You can recognize that you are located.

When the terminal can recognize that the terminal enters the video restriction area through the SIB message in the idle state, the terminal can perform the operation related to the series of video call restrictions even when the user does not press the call button. For example, the terminal recognizing that the user enters the video restriction zone can display an icon indicating that the video call is restricted in the screen, so that the user can know in advance that the video call is restricted before the user presses the call button. In this state, when the user presses the call button and attempts to make a video call, the terminal may inform the user that the video will not be transmitted or received by displaying a message on the screen such as 'This area is not a video call'. will be.

After recognizing that the terminal enters the video restriction area through the SIB message as described above, when the user attempts to make a call by pressing a call button, the terminal starts a series of call setup process as described in FIG. First, the terminal performs an RRC connection establishment process with the base station controller (406), and then performs a service request and authentication process (408). In the service request and authentication process 4008, as described above, there is a process of exchanging a location registration message and a location registration response message between the terminal and the main exchange, and the terminal recognizes that it is in a video restriction area through the SIB message. As it is, the location registration message includes the information indicating that it is located in the video restricted area and informs the main exchange, and the main exchange recognizes that the terminal is located in the video restricted area through the location response message. Send to the terminal.

Thereafter, in the RAB setting process 410, the main exchange performs a series of processes for image blocking while the terminal exchange recognizes that the terminal is in the image restriction area. For example, the main exchange does not send the real-time video transmitted from the terminal to the called terminal, but sends a screen designated by the user or a screen stored in the server by the service provider to the called terminal.

Since the Alert and Connect process 412, the Data Flow process 414, and the Release process 416 are performed after the same process as described with reference to Figure 2 will not be described in detail.

Here, for the sake of convenience, the case where only the calling terminal is in the image restriction area has been described as an example, but the same may be applied to the case where the called terminal is in the image restriction area. In the idle state, not only the calling terminal but also the called terminal will receive the SIB message as described above, and thus, the main exchange can check whether the called terminal enters the video restriction area through the location registration process with the main exchange. to be.

5 is a flowchart illustrating an automatic image blocking process according to an embodiment of the present invention. First, an image restriction area of a service area of a base station is set by a mobile communication service provider and information about the image is input to the corresponding base station (500). When the terminal enters the image restriction area, the base station controller indicates that the area is the image restriction area through a specific bit of the SIB message (502), and transmits the SIB message to the terminal through the base station (504).

The terminal recognizes that the terminal is currently within the picture limited area through the SIB message received from the base station controller (506). The terminal, which recognizes its location, transmits a location registration message to the main exchange (508), and the main exchange, which has determined the location of the terminal through the location registration message, transmits a location registration response message to the terminal (510). After the user presses the call button on the terminal, the user requests a call setup through the terminal, and the main exchange performs the video blocking process as described above (512) so that the user does not have to make special settings for the terminal. Image transmission and reception can be blocked.

6 is a block diagram of an apparatus for automatically blocking image transmission according to another embodiment of the present invention. The device 600 includes a communication unit 602 and a control unit 604. The communication unit 602 exchanges various data with another device, for example, a base station controller, a base station, a terminal, and the like. The control unit 604 determines the location of the terminal through the information from the base station controller via the terminal via the communication unit, and determines whether the terminal is located in the image restricted area, and requests a call setup from the terminal within the image limited area. If there is, it transmits another image instead of the image transmitted from the terminal to the called terminal through the communication unit. In addition, the controller 604 checks whether the location of the terminal is within the image restriction area from the location registration message including the location information of the terminal received from the terminal through the communication unit, and transmits a location registration response message to the terminal through the communication unit. Can also be performed.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by.

1 is a simplified configuration diagram of a mobile communication system currently commercially available.

2 is a flowchart illustrating a general call processing procedure in an asynchronous mobile communication system.

3 is an exemplary view illustrating block types of system information used in an asynchronous mobile communication system.

4 is a diagram illustrating an automatic image blocking process according to an embodiment of the present invention.

5 is a flowchart illustrating an automatic image blocking process according to an embodiment of the present invention.

6 is a block diagram of an apparatus for automatically blocking image transmission according to another embodiment of the present invention.

Claims (11)

In the method for the mobile communication system to automatically block the image transmission by the mobile communication terminal, Receiving information on whether the terminal is within the image restriction area before setting up a call from the terminal using a location registration message; Receiving a call establishment request from the terminal within the image restriction area; And Transmitting another image to the called terminal instead of the image transmitted from the terminal; Automatic transmission of the image transmission method of a mobile communication system comprising a. The method of claim 1, Receiving information about whether the terminal is within the image restriction area from the terminal by using a location registration message Receiving a location registration message including location information of the terminal from the terminal; and Transmitting a location registration response message to the terminal; Automatic transmission of the image transmission method of a mobile communication system comprising a. A method for automatically blocking image transmission by a mobile communication terminal in a mobile communication system including a main exchange, a base station controller and a base station, Transmitting information on whether or not the terminal is within an image restriction area from the base station controller to the terminal before call setup; Receiving, by the main exchange, before the call establishment from the terminal by using a location registration message, information on whether the terminal is in an image restriction area; And If there is a call establishment request from the terminal in the image restriction area, the main exchange transmits another image to the called terminal instead of the image transmitted from the terminal. Automatic transmission of the image transmission method of a mobile communication system comprising a. The method of claim 3, wherein The step of transmitting from the base station controller to the terminal information on whether the terminal is within the image restriction area Indicating, by the base station controller, whether a specific bit of a system information message exists within a picture restriction area of the terminal; Transmitting, by the base station controller, the system information message to a terminal through a base station; Automatic transmission of the image transmission method of a mobile communication system comprising a. The method of claim 3, wherein Receiving the information from the terminal using the location registration message information on whether or not the terminal is within the image restriction area step Receiving, by the main exchange, a location registration message including location information of the terminal from the terminal; Sending, by the main exchange, a location registration response message to the terminal; Automatic transmission of the image transmission method of a mobile communication system comprising a. In the method of automatically blocking the transmission of the image in the mobile communication terminal in the image restriction area, Receiving information about whether the terminal is within an image restriction area from a base station controller; Transmitting information on whether or not the terminal is within an image restriction area to a main exchange using a location registration message; And Displaying on the output device that the image transmission is impossible because the terminal is in an image restriction area. Method for automatically blocking image transmission of a mobile communication terminal comprising a. The method of claim 6, Receiving information about whether the terminal is within the image restriction area from the base station controller And receiving a system information message including a specific bit indicating information on the presence or absence of information in the image restriction area. The method of claim 6, The step of transmitting the information on whether the terminal is in the image restriction area to the main exchange using a location registration message Transmitting a location registration message including location information of the terminal to the main exchange; Receiving a location registration response message from the main exchange; Method for automatically blocking image transmission of a mobile communication terminal comprising a. The method of claim 6, When there is a call setup request by the user within the image restriction area, the mobile communication terminal further comprises the step of notifying the user that the image transmission is impossible and transmitting another image to the called terminal instead of the real time image. How to automatically block video transmission. An apparatus for automatically cutting off image transmission by a mobile communication terminal in a mobile communication system, Communication unit for transmitting and receiving data with the base station controller, the base station and the terminal and The location of the terminal is determined by the information on whether the terminal received from the base station controller via the terminal via the communication unit is in the image restriction area, and the information on whether the terminal is in the image restriction area. A control unit for receiving a call from the terminal using a location registration message and transmitting a different image to the called party's terminal through the communication unit instead of the image transmitted from the terminal when there is a call setup request from the terminal within the image restriction area. Automatic image transmission blocking device of a mobile communication system comprising a. 11. The method of claim 10, The controller checks whether the location of the terminal is within the image restriction area from the location registration message including the location information of the terminal received from the terminal through the communication unit, and transmits a location registration response message to the terminal through the communication unit. Automatically block image transmission of a mobile communication system, characterized in that it further comprises a function.

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