KR100922676B1 - Method of operating mobile telephone in loss of user subscriber identification module card - Google Patents

Abstract

Updating the lost or not check field in the user identification module (USIM) card using an over the air (OTA) message, resetting the mobile communication terminal if the lost or missing check field is updated, and after the mobile communication terminal is reset And displaying a pre-specified loss confirmation message on the display screen of the mobile communication terminal to configure an operation method of the mobile communication terminal when the user identification module (USIM) card is lost. Therefore, when the user identification module card USIM is lost, there is an effect of preventing indiscriminate use of the mobile communication terminal by the card acquirer or the illegal acquirer.

Mobile terminal, USIM, lost

Description

METHOD OF OPERATING MOBILE TELEPHONE IN LOSS OF USER SUBSCRIBER IDENTIFICATION MODULE CARD}

The present invention relates to a method of operating a mobile communication terminal, and more particularly, to the operation of a mobile communication terminal that can prevent damage caused by the loss of the user identification module card (USIM) used in the third generation or more mobile communication terminal It is about a method.

A mobile terminal equipped with a Universal Subscriber Identity Module (USIM) card, which is essential for using third-generation or more mobile services such as Wideband Code Division Multiple Access (WCDMA) and High Speed Downlink Packet Access (HSPDA), As well as the mobility of the USIM card in the mobile communication terminal period, the mobility of the mobile communication service provider is guaranteed with one USIM card. The USIM card is a combination of a conventional subscriber identity module (SIM) card with subscriber information and a universal IC card (UICC), and implements various functions such as user authentication, global roaming, and e-commerce on a single card.

In addition, the USIM card is a small memory that acts as a kind of storage device, and can store not only mobile subscriber information but also personal stored information such as a phone book and a short message service (SMS) message, even when the mobile communication terminal is replaced. It is possible to use the contents of the USIM card without having to record the stored information on a new mobile communication terminal. In addition, even if a user wants to change to another mobile communication provider, the user can easily change to another mobile communication provider by using the user's mobile phone terminal and the USIM card used by the user without going through the mobile communication service provider.

In this way, the USIM card is not only an essential element in using a mobile communication terminal, but also can be replaced at any time and newly purchased, but contains personal information, and in that each subscriber's information is stored. It may also be said to play an important role as a main body (ME). Therefore, when the USIM card is lost, personal information stored in the USIM card or a phone number assigned to the USIM card may be used as it is, which may cause problems equal to or greater than when the mobile communication terminal is lost. .

An object of the present invention for solving the problems described above is to move to prevent illegal use and induce the collection of USIM card when the lost USIM card is mounted on the mobile communication terminal in a state where the USIM card is lost The present invention provides a method for operating a communication terminal.

The present invention for achieving the above object, using the over-the-air (OTA) message updating the loss check field in the user identification module (USIM) card, if the loss check field is updated (move) is updated (update) Resetting the communication terminal and displaying a lost confirmation message on the display screen of the mobile communication terminal after the mobile communication terminal is reset. It provides a method of operation of the terminal.

Here, the method may further include disabling the user interface except for the display screen after the mobile communication terminal is reset. In this case, disabling the user interface may include disabling the power button of the mobile communication terminal to disable power off.

Here, the method may further include disabling the IMSI (International Mobile Subscriber Identity) of the user identification module (USIM) card to disable normal call processing after the mobile communication terminal is reset.

Here, after the mobile communication terminal is reset, performing a location registration,

The method may further include receiving a lost recall message from the mobile communication network and automatically re-calling the acquisition notification phone number upon reading the lost recall message.

In this case, after the mobile communication terminal is reset, the method may further include disabling operations except for receiving and reading a message including receiving and reading the lost recall message and sending a voice call.

In this case, the acquisition notification telephone number may be included in the lost recall message and received from the mobile communication network. Alternatively, the acquisition notification telephone number may be configured to be stored in the user identification module (USIM) card.

The loss confirmation message may be stored in a user identification module (USIM) card, and the loss confirmation message may include a phrase and contact information indicating that the user identification module (USIM) card is in a lost state.

In the case of using the operation method of the mobile communication terminal according to the present invention as described above, when the lost reported USIM card is used, the lost card is used on the display screen of the mobile communication terminal and the contact information for reporting the lost card is displayed. It can have the effect of inducing contact of the card acquirer or the illegal acquirer.

In addition, as a more aggressive countermeasure, if it is recognized that a lost USIM card is installed in the mobile communication terminal, the user interface may be blocked or the IMSI (International Mobile Subscriber Identity) may be disabled to block normal call processing. Can be. In this case, since the normal use of the mobile communication terminal is impossible, the illegal use of the card acquirer or the illegal acquirer can be prevented and the card loser or the mobile communication operator can be contacted.

As a more aggressive countermeasure, if a lost USIM card is recognized in the mobile communication terminal, a lost recall message is sent to the mobile communication terminal equipped with the lost USIM card, and the card acquirer or illegal acquirer At the moment of reading the lost recall message, a voice call can be automatically sent to the card loser or the mobile service provider, thereby effectively inducing contact.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

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

1 is a flowchart illustrating a method of operating a mobile communication terminal when a user identification module card is lost according to the present invention.

Referring to Figure 1, the operation method of the mobile communication terminal when the loss of the user identification module card according to the present invention, the step of updating the whether or not check field (S110), the step of resetting the mobile communication terminal (S120) and the loss confirmation message It may be configured to include a step (S130) to display on the display screen of the mobile communication terminal.

On the other hand, with the step of displaying the loss confirmation message on the display screen of the mobile communication terminal (S130), as a further security measures when the user interface disable step (S131), IMSI deactivation step (S132) and lost recall message received and read An automatic redial step (S133) may be included. The additional safeguards can be configured to be implemented selectively or in combination.

The step (S110) of updating the lost or not check field is a step for recording in the USIM card that the USIM card installed in the mobile communication terminal is a lost card. Recognizing that the user identification module card (USIM) is lost, the user notifies the operator of the currently subscribed mobile communication network. For example, a loss report is made by visiting or contacting a service center or a subscriber call center operated by a mobile network operator. The carrier of the mobile communication network checks whether the lost user identification module card is used by using an over the air (OTA) message for the corresponding user identification module card when the user ID module card is later installed and used in other mobile communication terminals. The field will be updated to record the missing user identification module card.

At this time, the loss check field is specified in a memory in the user identification module card USIM. That is, the loss status check field may be configured by allocating a storage space of at least 1 bit capable of recording the loss status on the user identification module card.

The USIM card uses a file system with an internal logical structure to store various information. The types of files are classified into MF (Master File), DF (Dedicated File), and EF (Elementary File). Among them, EF is a file type having a structure in which a header and a body are combined, and in detail, EF is divided into three types, Transparent EF, Linear fixed EF, and Cyclic EF. Each EF has a unique identifier and each stores information corresponding to it. Therefore, the loss status check field may be provided in the USIM card in the form of EF. For example, it may be configured to designate a field called 'EF Loss' and to specify 'not lost' when 'EF Loss' is 0x01 and '0' when it is 0x00.

The step S120 of resetting the mobile communication terminal resets the mobile communication terminal again when the mobile communication terminal confirms that the lost or not check field of the USIM card is updated (for example, confirms that the EF Loss field is updated to 0x01). To perform the operation. In this case, when a file in the installed USIM card is changed, a file change notification is transmitted to the mobile communication terminal, so that the change of the file can be confirmed through this, and the changed file is lost on the mobile communication terminal side. It may be configured to check that the check field is the case, and to recognize that the USIM card is lost or not.

After the mobile communication terminal is reset, the mobile communication terminal is configured to check the contents of the lost or not check field of the USIM card to perform a processing operation when the USIM card is confirmed to be lost.

Basically, in the step (S130) of displaying a loss confirmation message on the display screen of the mobile communication terminal, it is a step of displaying on the display screen of the mobile communication terminal that the lost USIM card is mounted and used in the mobile communication terminal.

In this case, the loss confirmation message may be stored in a user identification module (USIM) card, and may include a phrase and contact information indicating that the user identification module (USIM) card is lost.

2 is a conceptual diagram illustrating an example of a loss confirmation message in a method of operating a mobile communication terminal when a user ID module card is lost according to the present invention.

Referring to FIG. 2, after a step of resetting the mobile communication terminal (S120), if the lost or not check field in the USIM card is confirmed to have been updated to designate a lost state, the loss displayed on the display screen of the mobile communication terminal is lost. An example of the confirmation message 200 is shown.

The loss confirmation message may be configured to include a phrase 210 indicating that the user or operator specified in advance, the lost reported USIM card, and contact information 220 to be contacted in connection with the lost reported USIM card. have.

As described above, the loss confirmation message may be stored in a specific field (eg, designated as 'EF Loss_Warning') in the USIM card. Lost confirmation message can also be configured to include new contact information is always updated by the operator through the OTA.

On the other hand, by displaying a loss confirmation message on the display screen of the mobile communication terminal (S130) not only to inform the potential USIM card acquirer or illegal acquirer that the lost USIM card is being used, but also more aggressively. Security measures may be necessary.

Additional security measures that can be applied to a method of operating a mobile terminal when a USIM card is lost according to the present invention may include the following steps selectively or in combination.

1) Disabling the User Interface ( S131 )

After the mobile communication terminal is reset, if the mobile communication terminal checks the contents of the USIM card loss check field again and confirms that it is a lost USIM card, the mobile communication terminal illegally moves the user using the lost USIM card. It may be configured to lock the user interface except for the display screen of the mobile communication terminal to block the use of the communication terminal.

For example, the USIM card lost by the user interface blocking can prevent the user from directly entering a phone number to make a call or sending a message (SMS or MMS). In addition, it may be necessary to block the function of the power button so as not to turn off the power of the mobile communication terminal arbitrarily.

Accordingly, when the lost USIM card is used and the contact information is displayed on the display screen by displaying the lost confirmation message on the display screen of the mobile communication terminal (S130), key-pad input or power-off operations are performed. Can be blocked. Since a user who acquires or illegally acquires a USIM card cannot use a mobile communication terminal using a lost USIM card, the user may be induced to contact the contact included in the loss confirmation message.

2) Block normal call processing by disabling IMSI ( S132 )

After the mobile terminal is reset, if the mobile terminal checks the contents of the USIM card's loss check field again and confirms that it is a lost USIM card, the mobile terminal deactivates the IMSI of the lost USIM card. You can.

If the IMSI is deactivated, normal call processing is impossible in the mobile communication terminal equipped with the corresponding USIM card.

Accordingly, by displaying the lost confirmation message on the display screen of the mobile communication terminal (S130), normal call processing is blocked while the lost USIM card is used and the contact information is displayed on the display screen. A user who acquires or illegally acquires a USIM card may not be able to call-process using a mobile communication terminal using a lost USIM card, and thus may be induced to contact a contact included in a lost confirmation message.

3) Automatically call when sending and reading lost recall messages ( S133 )

The two security measures described above, ie, blocking normal call processing by disabling the user interface and disabling IMSI, simply output a loss confirmation message on the display screen of the mobile communication terminal and further prevent illegal use of the USIM card. It can bring an effect.

However, when a lost USIM card is mounted and used in a mobile communication terminal, a more aggressive plan may be required to automatically contact the operator or the card loser.

Therefore, after the mobile communication terminal is reset, when the mobile communication terminal checks the contents of the USIM card's loss status check field again and confirms that it is a lost USIM card, the mobile communication terminal internally registers a normal location registration. To do this. As soon as the location registration is completed, the mobile communication terminal is able to receive and send normal call processing, short message (SMS) and multimedia message (MMS) internally.

However, even in this case, the mobile communication terminal may externally stay with the loss confirmation message displayed on the display screen by displaying the loss confirmation message on the display screen of the mobile communication terminal (S130). . It may also be desirable to disable the user interface to prevent use of a user who has acquired or illegally obtained a USIM card.

On the other hand, when the mobile communication terminal attempts to register a location, the mobile communication network requests IMSI information of the USIM card installed in the mobile communication terminal through an Identity Request, and the mobile communication terminal requests the IMSI information through the Identity Response. Will be delivered to Therefore, in the mobile communication network, the IMSI information of the lost USIM card is stored in a database and stored. When the mobile communication terminal equipped with the lost USIM card requests the location registration, the mobile communication network requests the location registration using the lost reported IMSI. It is determined that the USIM of the mobile communication terminal is reported to be lost. If it is determined that the lost USIM is used, the mobile communication network sends a lost recall message after the end of the location registration.

Here, the lost recall message may be sent in the form of a short message (SMS) or a multimedia message (MMS), and may be sent with information indicating that the USIM card mounted on the mobile communication terminal is a lost card.

In addition, when the lost recall message is read by the mobile communication terminal equipped with the lost reported USIM card, the mobile communication terminal may be configured to automatically send a call to a predetermined learning notification phone number. In this case, while the operation for reading the lost recall message is performed, it is necessary to release the locking of the user interface so that the lost recall message can be read.

The acquisition notification telephone number may be, for example, a lost center provided by a mobile network operator or a contact information of a user who has lost a USIM card.

The acquisition notification phone number may be included in the lost recall message and configured to be received from the mobile communication network. The acquisition communication phone number is parsed from the received lost recall message by the mobile communication terminal receiving the lost recall message. Voice calls can be sent automatically.

Alternatively, the acquisition notification phone number may be stored in advance in the USIM card. In this case, the lost recall message may be configured to only play a role of triggering a voice call at the moment of opening the lost recall message using the acquisition notification phone number included in the USIM card without including any additional contents. .

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

1 is a flowchart illustrating a method of operating a mobile communication terminal when a user identification module card is lost according to the present invention.

2 is a conceptual diagram illustrating an example of a loss confirmation message in a method of operating a mobile communication terminal when a user ID module card is lost according to the present invention.

Claims (9)

Updating the Loss Check field in the User Identification Module (USIM) card using an Over The Air (OTA) message; Resetting the mobile communication terminal when the loss status check field is updated; And Disabling the International Mobile Subscriber Identity (IMSI) of the User Identification Module (USIM) card after the mobile communication terminal is reset to disable normal call processing. Method of operation. The method of claim 1, Disabling a user interface except for a display screen after the mobile communication terminal is reset, wherein the user identification module (USIM) card is lost. The method of claim 2, Disabling the user interface may include disabling the power button of the mobile communication terminal to disable the power off. delete Updating the Loss Check field in the User Identification Module (USIM) card using an Over The Air (OTA) message; Resetting the mobile communication terminal when the loss status check field is updated; Performing location registration after the mobile communication terminal is reset; Receiving a lost recall message from a mobile communication network; And And automatically re-calling the acquisition notification phone number upon reading of the lost recall message. The method of claim 5, wherein After the mobile communication terminal is reset, Disabling operations except for receiving and viewing the message including receiving and viewing the lost recall message and transmitting a voice call. 4. The method of operating the mobile communication terminal when the user identification module (USIM) card is lost. The method of claim 5, wherein The acquisition notification telephone number is included in the lost recall message and is operated by the mobile communication terminal when a user identification module (USIM) card is received from the mobile communication network. The method of claim 5, wherein The acquisition notification telephone number is stored in the user identification module (USIM) card operating method of the mobile communication terminal when the user identification module (USIM) card is lost. delete

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