KR100311510B1 - Method for restrict call of mobile phone - Google Patents

Abstract

The present invention relates to a method for limiting transmission of a terminal to be suitable for limiting transmission of the terminal by using a short message when the terminal is lost. Such a method for restricting transmission of a terminal includes generating a control signal in which information about a lost terminal is inserted into an identifier field of a short message from a service center according to a terminal loss report, and receiving the generated control signal at the terminal. And displaying only the characters provided from the received control signal on the LCD, and limiting the origination of the terminal so that only the provided number is dialed out, thereby preventing illegal calls of the terminal learner, thereby preventing economic loss of the terminal lost. Phosphorus loss can be prevented and the terminal can be easily found.

Description

Method for restricting calling of mobile device {Method for restrict call of mobile phone}

The present invention relates to a terminal, and more particularly, to a method for limiting transmission of a terminal to be suitable for limiting the origination of the terminal by using a short emergency message when the terminal is lost.

In general, a short message service (hereinafter, abbreviated as SMS) transmits data at a speed of up to 150 bytes between a terminal and a terminal using a bidirectional data radio calling service that conforms to the standard of Global System for Mobile Communication (GSM). It is a service.

That is, SMS service automatically switches to the message service function when the terminal is not turned on or when the terminal cannot make a call in the radio wave shadow area. It is a function that enables the reception of the other party's message in the form of the back.

Currently used SMS services include voicemail services, broadcast services such as receiving and sending text messages, and interactive services.

1 is a diagram illustrating a network system for performing a typical SMS transmission.

Referring to FIG. 1, a short message transmitted from a first terminal that is a transmitting GSM mobile station 100 is transmitted to a service center 120 through a first GSM system 110, and the service center 120 transmits a short message. The data is stored and transmitted to the second terminal 140 which is a receiving GSM mobile station via the second GSM system 130.

The second terminal 140 stores the transmitted short message, and the terminal user reads the short message stored in the second terminal 140.

At this time, the service center 120 deletes the stored short message if it is correctly transmitted to the second terminal 140. If the second terminal 140 does not receive the short message, the service center 120 keeps it for a certain period of time and transmits the SMS again for that period. Try.

2 is a block diagram of a general mobile communication system.

Referring to FIG. 2, the mobile communication system includes a local switching network 200 such as a public switched telephone network (PSTN) or a public switched data network (PSDN), a private switch 210 of each communication operator, and a communication history of a subscriber of a communication service. Subscriber management system 220 for managing the back, the base station 230 and the antenna 240 and the terminal 250 is composed of.

As described above, in the communication method of the configured terminal 250, when the base station 230 transmits communication area information such as a communication channel available in the corresponding area (Zone) to the terminal 250 at a predetermined period, the terminal 250 is the above-mentioned. When the area information is registered by comparing the communication area information with data such as a communication channel stored in the memory of the terminal 250 and transmits the confirmation signal to the base station 230.

When the user 'turns on' the power of the terminal 250, the base station 230 provides a signal indicating that the user is 'power-on' and registration information for registering the terminal 250 such as an ID thereof. ).

Subsequently, the base station 230 receives the signal transmitted from the terminal 250 and transmits an acknowledgment message to the terminal 250, from which the terminal 250 waits until the user starts a call. ) Will remain.

On the other hand, when the user presses the phone number of the terminal 250 and presses the SEND button to make a call, the terminal 250 registration information and ID are transmitted to the base station 230, and the base station 230 records the ID of the terminal 250 privately. It transmits to the switch 210 and checks whether the ID is registered in the TRS (Trunked Radio System; TRS), and transmits a confirmation signal to the terminal 250 when the ID is registered.

In such a mobile communication system, if a user loses or steals the terminal 250, there is no function to help the user find the terminal. When the user reports the terminal to the service provider, the service provider of the terminal 250 The subscriber is protected by using the method of stopping the service such as suspension.

However, there is a problem that there is no way to find a lost terminal when limiting all the transmission of the lost reported terminal.

Disclosure of Invention An object of the present invention is to provide a method for limiting the origination of a terminal for limiting the origination of a terminal by using a short message when the terminal is lost.

According to another feature of the present invention for achieving the other object as described above, the method for limiting the transmission of the terminal generates a control signal in which information about the lost terminal is inserted into the identifier field of the short message from the service center according to the terminal loss report; And receiving the generated control signal at the terminal, displaying only the characters provided from the received control signal on the LCD, and limiting the origination of the terminal so that only the provided number is dialed.

1 is a block diagram of a network system for performing a general short message transmission.

2 is a block diagram of a general mobile communication system.

3 is a flowchart illustrating a method for limiting transmission of a terminal according to the present invention;

Hereinafter, a configuration and an operation according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

3 is a flowchart illustrating a method for limiting transmission of a terminal according to the present invention.

Referring to FIG. 3, when the lost terminal is detected by the base station, the service center transmits an SMS emergency message using a paging channel transmitted from the base station to the corresponding terminal to limit the outgoing of the terminal. It consists of

First, if the terminal is lost or stolen, the terminal user reports the terminal to the service provider (S200).

In this case, the Short Message Center (SMC) of the service provider who has received the loss report generates an SMS emergency message having the service center or the contact information of the lost user at the same time as the lost information of the corresponding terminal is input, and tracks the location of the terminal through the base station. Done.

When the terminal learner turns on the terminal and attempts to make an illegal call, the base station identifies the terminal position and registers the terminal in a signal such as an ID included in the paging channel of the reverse link received from the terminal. (S201).

Subsequently, at the same time as the terminal is registered, an SMS emergency message having lost information of the terminal is transmitted to the corresponding terminal using the paging channel of the base station in the short message center (SMC) of the service center (S202).

The SMS emergency message carried on the paging channel and configured as shown in Table 1 below.

-SMS point-to-point message parameters (incoming) Teleservice identifier From address From Sub Address Bearer Response Option Bearer data (Phil) (Phil) (Selection) (Selection) (Selection)

Referring to Table 1, an SMS emergency message transmitted from a base station to a terminal using a paging channel is determined by a tally service identifier, and a signal actually controlling the terminal is transmitted using bearer data.

The tally service identifier for determining the mode of the SMS point-to-point message is configured as shown in Table 2 below.

PARAMETER_ID PARAMETER_LEN IDENTIFIER

Referring to Table 2, the tally service identifier in the SMS emergency message transmitted to the terminal is composed of 32 bits, among which the PARAMETER_ID field and the PARAMETER_LEN field are allocated 8 bits, and the IDENTIFIER field is allocated 16 bits.

When the service provider receives the terminal loss report, the service provider newly generates one code among 16-bit IDENTIFIER fields as shown in Table 2, stores the ID of the lost terminal in the generated code, and sends an SMS emergency message.

For example, if the lost terminal has an ID of 49154, an SMS emergency message that stores 49154 is transmitted by the newly generated code of the IDENTIFIER field so that the lost terminal can recognize the lost terminal.

Table 3 below shows an example of SMS services that depend on the value of the IDENTIFIER field.

IDENTIFIER value Service mode 49152 Korea CDMA PCS Shipment Teleservice 49153 Korea CDMA PCS Interactive Teleservice 4096 AMPS Extended Protocol Enhanced Service 4097 CDMA Cellular Call Teleservice 4098 CDMA Cellular Message Teleservice 4099 CDMA Voicemail Notification Service

And the SMS emergency message sent to the terminal sends a control message using the bearer data shown in Table 1.

The bearer data includes the messages shown in Table 4 below.

SMS delivery message (bearer data) subparameters Message identifier User data Absolute Available Cycle Relative Availability Cycle Absolute Delivery Time Relative Service Delivery Time Priority indicator Privacy indicator Response Option User response code Message Delivery Notification Language indicator Callback number

The terminal can be controlled using the callback number and the user data among the SMS delivery messages shown in Table 4 (S203).

In other words, when an SMS emergency message is received by the lost terminal, the terminal may send a text message, "This phone is the lost phone. The contact number below will be appreciated." Is fixedly printed on the LCD screen.

This is because, as the terminal receives the SMS urgent message, the terminal assigns the display area of the highest priority to the LCD screen allocation link priority of the terminal and deletes other areas so as not to invade the area to which other text messages are assigned.

Then, when the terminal learner tries to make a call, the phone number of the customer service center or the phone number stored by the user, which is already stored in the flash memory of the terminal, is recognized as a callback number and only the assigned callback number is called (S204). ).

In other words, when the learner presses the SEND button, the terminal reads the 1-bit bool (true / false) data stored in the flash memory and fixes the number.

Therefore, the terminal learner can only call the designated number and cannot use illegal telephones for other purposes, and can easily recognize that the terminal is lost by looking at the display window of the terminal.

As described above, the present invention limits the outgoing of the terminal by using an SMS message transmitted from the base station when the terminal is lost, and fixes the LCD screen with a certain character, thus preventing the terminal learner from making illegal calls. There is an effect to prevent economic losses.

Claims (1)

Generating a control signal in which information about the lost terminal is inserted into the identifier field of the short message from the service center according to the terminal loss report; Receiving the generated control signal at the terminal; And displaying only the characters provided from the received control signal on the LCD and limiting the origination of the terminal so that only the provided numbers are sent.