KR100865383B1 - Method for usage restriction of illegal mobile terminal and illegal smart card and system thereof - Google Patents

Abstract

A method and a system for restricting a use for an illegal mobile terminal and an illegal smart card are provided to restrict a use for a subscriber terminal or a smart card illegally used by using an OTA(On The Air) message, thereby preventing personal information stored in the smart card from being leaked and preventing a charge for a mobile communication service illegally used from being misused. A method for restricting a use for an illegal mobile terminal and an illegal smart card comprises the following steps of: receiving a registration request signal including an ID(IDentification) number of a subscriber terminal and an ID number of a smart card inserted into the subscriber terminal; comparing the ID number of the subscriber terminal and the ID number of a smart card with an illegal subscriber terminal list and an illegal smart card list to check whether the subscriber terminal and the smart card are illegally used(S330); and generating a control message for restricting a use for the subscriber terminal and the smart card illegally used and transmitting the control message to the subscriber terminal or the smart card(S352,S354).

Description

Method and Usage Restriction of Illegal Mobile Terminal and Illegal Smart Card and System

The present invention relates to a method and system for restricting the use of illegal terminals or illegal smart cards. In particular, the present invention relates to a method of identifying a subscriber terminal or smart card illegally used in a mobile communication system and restricting the use of the illegal subscriber terminal or illegal smart card identified using an Over The Air (OTA) message.

As computers, electronics, and communication technologies have made rapid progress, mobile communication services such as voice call service, video call service, and wireless Internet service using a wireless network have been provided. In order to properly provide such various mobile communication services, the mobile communication system needs to know the terminal information of the subscriber accurately. That is, it is necessary to check whether the subscriber terminal can make a video call, whether a multimedia messaging service (MMS) is available, and whether or not a wireless Internet service is available.

In the conventional mobile communication system, subscriber information and terminal information are used in the same concept. Therefore, the terminal information of the customer could be changed only through a processor called device change. However, as a smart card capable of storing data has been used, a method of storing subscriber information in a smart card and inserting and using the smart card in which the subscriber information is stored has been proposed. Through this method, subscriber information and terminal information could be separated.

Smart cards are also referred to as Universal Integrated Circuit Cards (UICCs), and include micro-processor units (MPUs), memory, card operating systems (COS), security algorithms, and electronically erasable programmable read only memory (EEPROM). It is a card of COB (Chip On Board) type with its own operation processing and mass storage. Smart cards used in mobile communication systems include subscriber identity module (SIM) cards used in GSM systems, user identity modules (UIM) used in CDMA systems, and universal subscriber identity module (USIM) cards used in WCDMA systems. There is this.

Such smart cards include a variety of subscriber information, including phone numbers (IMSIs), feature and environment variable values, service network information, service tables, subscriber authentication keys, call time and billing information, and unique IDs for smart cards. Various smart card information is stored, such as encryption keys and data service variable values. In addition, the smart card includes an application that runs an open platform or Java for executing mobile communication-related services.

Accordingly, by removing the smart card from the user terminal of the user and inserting the smart card into another subscriber terminal, it is possible to use a mobile communication service using a new subscriber terminal.

On the other hand, when a subscriber terminal is stolen or lost, a normal smart card may be inserted into a subscriber terminal obtained by a user who illegally obtained the stolen or lost subscriber terminal. In such a case, since the system providing the mobile communication service performs the authentication procedure only through the subscriber information stored in the smart card, a situation arises in which the corresponding mobile station is provided as a normal subscriber terminal to provide a mobile communication service. In addition, even if the mobile communication service provider confirms illegal use of the subscriber station, there is no way to limit the use of the subscriber station itself.

In addition, when the illegally acquired smart card is used for a normal subscriber terminal, even if the illegal use is confirmed by the mobile communication system, only the unauthorized approval of the smart card corresponding to the database is displayed, and the use of the smart card itself may be restricted. There is no way to do this.

The technical problem to be achieved by the present invention is to provide a method for limiting the use of an illegal subscriber terminal or illegal smart card itself when identifying a subscriber terminal or a smart card used illegally in a mobile communication system.

To this end, the method for limiting the use of an illegal subscriber terminal or an illegal smart card according to an embodiment of the present invention includes: (a) receiving a registration request signal including a unique number of a subscriber terminal and a unique number of a smart card inserted into the subscriber terminal; Doing; (b) comparing the unique number of the subscriber terminal and the unique number of the smart card with the illegal subscriber terminal list and the illegal smart card list to confirm whether the subscriber terminal and the smart card are illegal; And (c) generating a control message for limiting the use of the illegally identified subscriber station or smart card and transmitting it to the subscriber station or smart card.

In addition, the method of processing a usage restriction message according to an embodiment of the present invention is a method of processing a usage restriction message in which an illegal subscriber terminal or an illegal smart card is transmitted from a mobile communication system. Generating a registration request signal including a unique number of the inserted smart card and transmitting the registration request signal to the mobile communication system; (b) receiving a usage restriction message for the subscriber station or smart card from the mobile communication system; And (c) executing a command included in the usage restriction message to set a usage restriction of the subscriber station or smart card.

In addition, the system for limiting the use of an illegal subscriber terminal or illegal smart card according to an embodiment of the present invention, the base station for receiving a location registration request signal transmitted from the subscriber terminal; It manages illegal subscriber terminal list and illegal smart card list, and checks the unique number of the subscriber terminal and the unique number of the smart card transmitted through the location registration request signal, and verifies the illegality of the subscriber terminal and smart card. Processing system; And a short message service center for generating a control message for restricting the use of an illegal subscriber terminal or an illegal smart card and transmitting the control message to the subscriber terminal and the smart card illegally confirmed by the equipment verification registration processing system.

In accordance with the present invention, by limiting the use of illegally used subscriber terminal or smart card itself by using OTA message in the mobile communication system, it is possible to prevent leakage of personal information stored in the smart card and misuse of billing for illegally used mobile communication service. It can be prevented, it can be expected that the user of the subscriber terminal can solve the anxiety about the loss and theft.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. In addition, the terms “… unit”, “… unit”, “module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. have.

The illegal subscriber terminal and illegal smart card control system and method using the OTA message according to an embodiment of the present invention can be used in various mobile communication systems such as GSM system, CDMA system and WCDMA system. However, in the following description, an illegal subscriber terminal and illegal smart card control system and method according to an embodiment of the present invention will be described based on the WCDMA system. In the following description, the smart card will be described based on the USIM card used in the WCDMA system.

1 is a schematic diagram showing a subscriber station and a USIM card control system according to an embodiment of the present invention.

According to an embodiment of the present invention, a system for controlling the use of the subscriber station 110 and the USIM card 100 includes a base station 120 and a mobile switching center (MSC) 130. , Packet Switching Support Node (SGSN: Serving GPRS Support Node, hereinafter referred to as 'SGSN') 140, Packet Gateway Support Node (GGSN: Gateway GPRS Support Node, hereinafter referred to as 'GGSN') 150, Home Location Register (HLR: Home Location Register, hereinafter referred to as 'HLR') 160, Equipment Identification Register Processing System (EIR, hereinafter referred to as 'EIR') 170, and Short Message Service Center (SMSC) Service Center, hereinafter referred to as 'SMSC') 180.

When the USIM card 100 and the subscriber station 110 according to an embodiment of the present invention receive a usage restriction message transmitted from the SMSC 180, the USIM card 100 and the subscriber station 110 execute a command included in the usage restriction message to process the usage unavailable. Mount the program. That is, the USIM card 110 and the subscriber station 110 resets the stored subscription details or certificates according to the usage restriction message, or replaces a specific file among the installed operating systems, applications or control programs. Perform the action.

The base station (RAN) 120 includes a base station transmitter (Node B) and a base station controller (RNC: Radio Network Controller) according to the radio access standard of the 3GPP standard, the subscriber station 110 and the MSC 130 It plays a role of transferring voice / video call and data call between.

The MSC 130 performs an incoming or outgoing process of an audio / video call transmitted from the subscriber station 110, a location registration procedure of the subscriber station 110, various additional service processes, and an interworking function with another network.

SGSN 140 handles incoming or outgoing processing and session management, authentication and billing functions of data calls delivered from subscriber station 110 for packet data service.

The GGSN 150 is a serving node of an Internet Protocol (IP) -based packet network that provides a high-speed packet data service for packet data services. The GGSN 150 manages a session for packet data services and manages routing of packet data. And it provides an interface for connecting to the Internet network 190.

The HLR 160 stores subscriber information and additional service information for the USIM card 100 and the subscriber station 110, and performs functions such as registration recognition, registration deletion, and location checking.

The EIR 170 stores and manages an International Mobile Subscriber Identity (IMSI), which is a telephone number inserted into each USIM card, and an International Mobile Station Identity (IMEI), a device unique number assigned to a subscriber terminal.

That is, the EIR 170 manages the IMSI list of the USIM card and the subscriber terminal IMEI list of lost or stolen, and includes the IMSI of the USIM card and the IMEI of the subscriber terminal through the MSC 130 or SGSN 140. When the location registration request is delivered, it is compared with the IMSI list of the illegal USIM card or the IMEI list of the illegal subscriber terminal to check whether the location registration request is illegal for the USIM card or the subscriber terminal. And, it performs the role of delivering the illegal check result to the MSC (130) or SGSN (140).

The SMSC 180 is an additional service server that provides a short message service, and a request for generation of a usage restriction message for a corresponding USIM card or subscriber terminal is delivered according to an illegal USIM card or illegal subscriber terminal identification result of the EIR 170. If so, it generates a usage restriction message for the corresponding USIM card or subscriber terminal, and transmits the usage restriction message to the corresponding subscriber terminal using an over the air (OTA) transmission technology.

Here, the OTA transmission technology is a method of transmitting a file or message content in combination with a short message, and is a technology for easily transmitting the file or message content to the subscriber terminal through bidirectional communication using the short message. When transmitting a control message such as a usage restriction message according to an embodiment of the present invention to the subscriber station through the OTA transmission technology, the subscriber station can receive and execute the control message without a complicated download procedure.

In the subscriber station and the USIM card control system configured as described above, a process of restricting the use of the subscriber station or the USIM card is performed through the illegality check result of the EIR 170.

2 is a flowchart illustrating a processing procedure of a normal subscriber station and USIM card in the subscriber station and USIM card control system according to an embodiment of the present invention.

When the USIM card 100 is inserted into the subscriber terminal 110, the USIM card 100 receives various subscriber information such as unique ID, IMSI, service network information, phone book, and USIM card information included in the subscriber terminal 110. Provided by (S200).

The subscriber station 110 transmits a registration request signal including an IMSI number received from the USIM card 100 and an IMEI number, which is a unique number of the subscriber station 110, to the MSC 130 to perform a location registration procedure. At this time, the location registration procedure may be performed through the SGSN 140 that provides a packet data service. However, in the following description, it will be described on the basis of performing the location registration procedure through the MSC (130).

The MSC 130 transmits the received registration request signal to the HLR 160 to request authentication of the USIM card 100 and the subscriber station 110 (S210).

The HLR 160 extracts the IMSI number of the USIM card 100 and the IMEI number of the subscriber station 110 from the registration request signal received from the MSC 130, and extracts the extracted IMSI number and IMEI number from the EIR 170. By transmitting to, the USIM card 100 and the subscriber station 110 requests confirmation of illegal or normal (S220).

Receiving the IMSI number and the IMEI number, the EIR 170 checks the stored illegal USIM card list or the illegal subscriber terminal list to check whether it is normal or illegal.

When the EIR 170 confirms that the USIM card 100 and the subscriber station 110 are the normal USIM card and the subscriber station through the IMSI number and the IMEI number (S230), the EIR 170 receives an approval success message indicating that the USIM card and the subscriber station are the normal USIM card and the subscriber station. Transfer to the HLR (160) (S240).

Upon receiving the approval success message indicating that the USIM card 100 and the subscriber station 110 requesting the location registration are normal, the HLR 160 registers the location using various subscriber information and USIM card information included in the received registration request signal. Perform (S250).

When location registration with respect to the USIM card 100 and the subscriber station 110 is completed, the HLR 160 generates a registration success message indicating the success of location registration and transmits it to the MSC 130. In addition, the MSC 130 transmits a registration success message to the subscriber station 110 (S260).

Upon receiving the registration success message indicating that the location registration has been successfully processed, the subscriber station 110 establishes a session for exchanging a voice / video call or data call with the MSC 130. Through the session set up as described above, the user may be provided with a mobile communication service using the subscriber station 110 (S270).

3 is a flowchart illustrating a procedure for processing a restriction on the use of a subscriber station and a USIM card illegally used in the subscriber station and the USIM card control system according to an embodiment of the present invention.

When the USIM card 100 is inserted into the subscriber station 110, the subscriber station 110 transmits a registration request signal including IMSI and IMEI to the HLR 160, and the HLR 160 transmits the IMSI number and the IMEI number. The EIR 170 transmits the request to confirm whether the USIM card 100 and the subscriber station 110 are illegal or normal. This process is the same as the steps S200 to S220 of FIG. 2 (S300 to S320).

Receiving the IMSI number and the IMEI number, the EIR 170 checks the stored illegal USIM card list and the illegal subscriber terminal list to check whether the USIM card 100 and the subscriber terminal 110 are normal or illegal.

If the EIR 170 confirms that the USIM card 100 or the subscriber terminal 110 is an illegal USIM card or an illegal subscriber terminal due to loss or theft through an IMSI number and an IMEI number (S330), an illegal USIM card or an illegal subscriber The authentication failure message indicating that the terminal is transmitted to the HLR 160 (S340). In addition, the authorization failure message transmitted to the HLR 160 is transmitted to the subscriber station 110 through the MSC 130 (S342).

In addition, when the EIR 170 confirms that the illegal USIM card or the illegal subscriber terminal through the IMSI number and the IMEI number, the EIR 170 sends a signal requesting the generation of a message for limiting the use of the identified illegal USIM card or the illegal subscriber terminal. 180) (S350).

When the SMSC 180 receives a request for generating a usage restriction message together with information of an illegal USIM card or illegal subscriber terminal from the EIR 170, the SMSC 180 generates a usage restriction message for the corresponding USIM card or subscriber terminal (S352), The use restriction message generated using the OTA is transferred to the corresponding subscriber station 110 (S354).

Upon receiving the usage restriction message, the subscriber station 110 transmits the usage restriction message to the USIM card 100 by using an envelope command used in the open platform of the USIM card 100 or Java. .

At this time, the USIM card 100 and the subscriber station 110 receiving the usage restriction message may transmit a response message (ACK) indicating that the usage restriction message has been normally received to the SMSC 180 (S360).

The USIM card 100 analyzes the usage restriction message transmitted through the envelope command by using the installed open platform or Java (S370), and the usage restriction target included in the usage restriction message is the USIM card 100. Check whether the subscriber station 110 (S380).

When the use restriction target is confirmed as the subscriber terminal 110, the command for limiting the use of the subscriber terminal 110 is transmitted (S390), and the subscriber terminal 110 sets the usage restriction by executing the received command ( S392).

However, when the use restriction target is confirmed as the USIM card 100 in step S380, the usage restriction is set by executing an instruction for use restriction through the installed open platform or Java (S394).

Here, as a method of restricting the use of the subscriber station 110 or the USIM card 100 according to steps S392 and S394, a method of resetting stored subscription details, certificates, etc., or stored subscription details By replacing some of the contents of the certificate, such as a certificate with another file, a method of causing an error in use may be used.

In the above description, in steps S360 to S394, when the subscriber station 110 receiving the usage restriction message transfers the usage restriction message to the USIM card 100, the USIM card 100 analyzes the usage restriction message and uses the same. It is set to check the restriction target, generate a command for restriction of use, execute the USIM card 100 by itself, or deliver the generated command to the subscriber station 110.

However, in implementing the present invention, the subscriber station 110 that receives the usage restriction message checks the usage restriction target by using a usage restriction message analysis program mounted therein, and generates a command for usage restriction. The subscriber station 110 may be executed by itself or set to transmit a command generated by the USIM card 110.

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a configuration diagram briefly showing a subscriber station and a USIM card control system according to an embodiment of the present invention;

2 is a flowchart illustrating a processing procedure of a normal subscriber station and a USIM card in a subscriber station and USIM card control system according to an embodiment of the present invention;

3 is a flowchart illustrating a procedure for processing a restriction on the use of a subscriber station and a USIM card illegally used in the subscriber station and the USIM card control system according to an embodiment of the present invention.

Claims (15)

In the method for limiting the use of illegal subscriber terminal or illegal smart card in a mobile communication system, (a) receiving a registration request signal including a unique number of a subscriber station and a unique number of a smart card inserted into the subscriber station; (b) comparing the unique number of the subscriber terminal and the unique number of the smart card with an illegal subscriber terminal list and an illegal smart card list to confirm whether the subscriber terminal and the smart card are illegal; And (c) generating a control message restricting the use of the subscriber terminal or the smart card that is illegally identified and transmitting the control message to the subscriber terminal or the smart card; Usage restriction method comprising a. The method of claim 1, Step (a) is, And a registration request signal including an international mobile station equipment identity (IMEI), which is a device unique number of the subscriber station, and an international mobile subscriber identity (IMSI), a subscriber's telephone number. The method according to claim 1 or 2, Prior to step (a), Generating the illegal subscriber terminal list using the IMEI of the stolen or lost subscriber terminal and generating the illegal smart card list using the IMSI of the stolen or lost reported smart card Usage restriction method further comprising. The method of claim 1, Step (c) is, And generating a control message for resetting the contents stored in the illegally identified subscriber station or smart card or replacing some files. The method according to claim 1 or 4, Step (c) is, The method of claim 1, wherein the control message is transmitted to the subscriber station or the smart card using an over the air transmission technology. In the method for processing the usage restriction message that the illegal subscriber terminal or illegal smart card is transmitted from the mobile communication system, (a) generating a registration request signal including a unique number of a subscriber station and a unique number of a smart card inserted into the subscriber station, and transmitting the registration request signal to the mobile communication system; (b) receiving a usage restriction message for the subscriber station or the smart card from the mobile communication system; And (c) setting a usage restriction of the subscriber station or the smart card by executing a command included in the usage restriction message; Usage restriction message processing method comprising a. The method of claim 6, Step (c) is, (c1) checking the usage restriction message to determine whether the usage restriction target is the subscriber station or the smart card; And (c2) executing a command included in the usage restriction message to reset the details stored in the subscriber station or the smart card or setting a usage restriction by replacing some files; Usage restriction message processing method comprising a. The method of claim 7, wherein Step (c1) is, Confirming, by the subscriber terminal, the received restriction message by using the received restriction message; or The subscriber terminal transmits the received use restriction message to the smart card, and the smart card checks the use restriction message to identify the use restriction target; Using the one of the methods, the use restriction message processing method characterized in that for identifying the use restriction target through the use restriction message. delete delete In the system for restricting the use of illegal subscriber terminal or illegal smart card, A base station receiving a location registration request signal transmitted from a subscriber station, wherein the location registration request signal includes a unique number of the subscriber station and a unique number of a smart card inserted into the subscriber station; It manages the illegal subscriber terminal list and the illegal smart card list, and checks the unique number of the subscriber terminal and the unique number of the smart card transmitted through the location registration request signal to determine whether the subscriber terminal and the smart card are illegal. Equipment verification registration processing system to confirm; And Short message service center for generating a control message restricting the use of illegal subscriber terminal or illegal smart card and transmitting to illegal subscriber terminal and smart card which are illegally confirmed by the equipment verification registration processing system Usage restriction system comprising a. The method of claim 11, Stores subscriber information and additional service information of the subscriber station and the smart card, receives a location registration signal transmitted from the base station, extracts the unique number of the subscriber station and the unique number of the smart card, and extracts the extracted number. A home location register which transmits the unique number of the subscriber station and the unique number of the smart card to the equipment verification registration processing system Usage restriction system further including. The method of claim 11, The equipment verification registration processing system, Illegal use of the subscriber station and the smart card by using an international mobile-station equipment identity (IMEI), which is a device unique number assigned to a subscriber station, and an international mobile subscriber identity (IMSI), which is a subscriber's phone number inserted into the smart card. Usage restriction system, characterized in that checking whether or not. The method of claim 11, The short message service center, The system of claim 1, wherein the generated control message is transmitted to the subscriber station and the smart card using an over the air (OTA) transmission technology. The method of claim 11, The smart card, Subscriber Identity Module (SIM) card used in GSM system, User Identity Module (UIM) used in CDMA system or Universal Subscriber Identity Module (USIM) card used in WCDMA system.

Images