KR100690565B1 - Method and System for Erasing Personal Information Stored in Lost Mobile Communication Terminal - Google Patents

Abstract

The present invention relates to a system and method for protecting personal information stored in a lost mobile communication terminal.

The present invention relates to personal information stored in the user terminal in a mobile communication network including a user terminal, a short message service center, a home location register, a mobile communication switching center, and a subscriber management system (hereinafter referred to as a CSMS). CLAIMS 1. A method of deleting via a remote control, the method comprising: (a) receiving a control message request signal from the CSMS; (b) receiving the control message request signal, generating a control message, and querying the home location register to receive status information of the user terminal; (c) analyzing the state information to determine whether the control message can be transmitted to the user terminal; (d) if it is determined in step (c) that the control message can be transmitted to the user terminal, transmitting the control message to the user terminal through a paging channel; And (e) the user terminal receiving and analyzing the control message to delete the personal information stored in the memory of the user terminal. .

According to the present invention, the personal information stored in the lost mobile communication terminal is deleted and destroyed through remote control, thereby preventing the leakage of personal information.

Mobile terminal, personal information, remote control, short message service center

Description

System and method for deleting personal information stored in lost mobile communication terminal {Method and System for Erasing Personal Information Stored in Lost Mobile Communication Terminal}

1 is a block diagram schematically illustrating a system for deleting personal information stored in a lost mobile communication terminal according to a preferred embodiment of the present invention;

2 is a flowchart illustrating a method of deleting personal information stored in a lost mobile communication terminal according to a preferred embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: user terminal 110: mobile communication network

111: wireless base station 112: base station

113: base station controller 114: home location register (HLR)

115: mobile switching center 116: SMS center

117: Delete personal information Server 120: CSMS

The present invention relates to a system and method for deleting personal information stored in a lost mobile communication terminal. More specifically, the personal information deletion server receiving the control message request signal from the subscriber management system generates a control message, transmits the generated control message to the mobile terminal through a paging channel, and transmits the control message. The present invention relates to a system and method for deleting personal information stored in a lost mobile communication terminal in which a received mobile communication terminal deletes personal information stored in a memory of the mobile communication terminal according to a processing routine of a control message.

Due to the remarkable development of the information and communication field, the information and communication environment is undergoing a drastic change, and in particular, the users of mobile communication terminals, which are easy to carry, are increasing.

With the rapid development of wireless communication and data processing technology, people can use mobile terminals to use not only voice calls but also short messages, voice messages, Internet access, video communication, and video message transmission. In addition, due to the rapid dissemination of mobile communication terminals, mobile communication terminals have become an essential means of communication in modern life, such as a considerable amount of communication occurring in human relationships through mobile communication terminals.

Accordingly, subscribers of mobile communication services can freely move and talk with the other party anytime and anywhere using a wireless communication service, as well as various information necessary for life through data service through wireless internet, for example, news, weather, sports. , Securities, exchange rates, or traffic information may be provided in various forms such as text, voice, or image.

Recently released mobile communication terminals are being stored in a variety of large-capacity personal information in accordance with the multifunctionality of the mobile communication terminal (built-in camera module, built-in large memory, etc.). Such personal information includes a list of telephone numbers, pictures, videos, call history, contents of short message transmission and reception, and the like.

Therefore, in case of losing a mobile communication terminal in which a large amount of personal information is stored, the inconvenience and damage of the user is inevitably very large.

As such, if the mobile communication terminal, which is a necessity of life, is inadvertently lost, it is very likely that important personal information stored in the mobile communication terminal is exposed, and if it is used in criminal activity, the loss of the terminal is further increased. However, current mobile communication providers or terminal manufacturers have no countermeasures to prevent the exposure of personal information stored in the terminal when the user loses the mobile communication terminal.

In order to solve this problem, the present invention, the personal information deletion server receiving the control message request signal generates a control message, and transmits the generated control message to the mobile communication terminal through the paging channel (Paging Channel), the control message It is an object of the present invention to provide a method and system for deleting personal information stored in a memory of a mobile communication terminal according to a control message processing routine.

According to a first object of the present invention for realizing the above object, remote control of personal information stored in a lost mobile communication terminal in a mobile communication network including a user terminal device, a wireless base station, a home location register, and a mobile communication switching center is performed. In the system to delete through the control, receiving the control message request signal including a control command to generate a control message to generate the control message, query the home location register to request the status information and location information of the user terminal And a personal information deletion server for transmitting the control message to the user terminal identified by the location information through a paging channel. To provide.

In addition, according to a second object of the present invention, in the mobile communication network including a wireless base station, a home location register, a short message service center and a mobile communication switching center to delete personal information stored in a lost mobile communication terminal through a remote control. A system comprising: a user terminal for receiving and analyzing a control message in the form of a short message and performing a function of deleting personal information stored in a memory according to a processing routine of the control message. Provides a system for deleting personal information stored in a communication terminal.

In addition, according to a third object of the present invention, a mobile communication network including a user terminal, a short message service center, a home location register, a mobile communication switching center, and a subscriber management system (hereinafter referred to as a "CSMS") A method of deleting personal information stored in the user terminal through a remote control, the method comprising: (a) receiving a control message request signal from the CSMS; (b) receiving the control message request signal, generating a control message, and querying the home location register to receive status information of the user terminal; (c) analyzing the state information to determine whether the control message can be transmitted to the user terminal; (d) if it is determined in step (c) that the control message can be transmitted to the user terminal, transmitting the control message to the user terminal through a paging channel; And (e) the user terminal receiving and analyzing the control message to delete the personal information stored in the memory of the user terminal. .

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram schematically illustrating a system for deleting personal information stored in a lost mobile communication terminal according to an exemplary embodiment of the present invention.

The personal information protection system according to the preferred embodiment of the present invention includes a user terminal 100, a mobile communication network 110, a subscriber management system (CSMS) (hereinafter referred to as 'CSMS') 120, and the like. It is composed.

The user terminal 100 inputs a short message according to a user's key value input, and then performs a call attempt to the wireless base station 111 to transmit the input short message to the mobile communication network 110. It is a terminal. The user terminal 100 is a model capable of using a short message and is a terminal subscribed to a short message service in order to use a short message. In the exemplary embodiment of the present invention, a mobile communication terminal is used as an apparatus for inputting and transmitting a short message. However, a web browser may be installed to include a computer capable of internet access to input and transmit a short message on the web. . In addition, the user terminal 100 is connected to the mobile communication network 110 to perform a normal voice call by wireless communication with the destination terminal, and automatically performs a session establishment procedure in response to a session establishment request from the mobile communication network 110. A terminal that performs and transmits and receives packet data.

In an embodiment of the present invention, the user terminal 100 receives a delete command message from the SMS center 116 through a paging channel and deletes personal information stored in the memory of the user terminal 100. do. Here, the personal information means information including any one or more of a telephone number list, a picture, a video, a call history, a short message transmission / reception content, a personal file, and the like stored in the user terminal 100.

Here, the delete command message is a message for controlling the user terminal 100 to delete the contents of the memory in which the personal information is stored. When the delete command message is received by the user terminal 100, the control unit of the terminal is an application program. By operating to recognize and analyze the delete command message, and deletes all the personal information stored in the memory of the user terminal (100). In order to implement such a function, an application program and a controller stored in the user terminal 100 include a function of recognizing and processing a delete command message.

If the destination terminal to receive the short message sent from the user terminal 100 is not in the area controlled by the calling mobile communication station 115, the SMS center 116 moves the received terminal with the short message. A mobile communication switching center 115 for which a called terminal is initially registered is determined using a mobile identification number (MIN) of the communication terminal. Here, the first registered mobile communication switching station 115 means a mobile communication switching station 115 in which a subscriber first registers subscriber information and information of a called terminal in order to use a mobile communication service as a receiving terminal.

The user terminal 100 includes a personal digital assistant (PDA), a cellular phone, a personal communication service (PCS) phone, a global system for mobile (GSM) phone, a wideband CDMA (W-CDMA) phone, a CDMA-2000 phone, and a wireless Broadband) DMB (Digital Multmedia Broadcasting) phones and the like. In addition, as a means for the user terminal 100 to access the SMS center 116 through the mobile communication network 110, a browser (Browser) capable of transmitting and receiving data should be installed, such a browser is a wireless application protocol (WAP) : WAP browser based on Wireless Application Protocol, Microsoft Internet Explorer (MIE) based on HTML using HTTP protocol, Handheld Device Transport Protocol (HDTP) I-mode, Binary Runtime Environment for Wireless ), But may not be limited to SK Telecom's 'NATE'. Among the Internet connection protocols used by the user terminal 100, MIE uses a shortened version of HTML, which is abbreviated as m-HTML. In the case of i-Mode, a language called compact HTML (c-HTML), which is a subset of HTML, is used. use.

Mobile communication network 110 according to a preferred embodiment of the present invention is a wireless base station 111, Home Location Register (HLR) 114, Visitor Location Register (VLR) (not shown), mobile And a short message service center (SMSC) 116, a personal information deletion server 117, and the like.

Although the mobile communication network 110 in the embodiment illustrated in FIG. 1 has been described using the IS-95B mobile communication network 110 as an example, the present invention is not necessarily limited thereto. Code Division Multiple Access (2000), SIP-based asynchronous, CDMA 2000 1X, CDMA 2000 1X EV-DO, W-CDMA mobile communication network, any mobile communication network that mediates wireless data between terminals such as mobile Internet network It should be understood as a broad concept that encompasses all.

The wireless base station 111 processes a connection request of a mobile communication terminal, and includes a handoff and a radio resource management function. The wireless base station 111 is composed of a base station (BTS) base station (BTS) 112, a base station controller (BSC: base station controller) 113 and a repeater (Cell Repeater (not shown)), etc., both synchronous and asynchronous Support.

The base station 112 receives a call request signal from the mobile communication terminal through a traffic channel of the signal channel, and transmits the received call request signal to the base station controller 113. In addition, the base station 112 is a network endpoint device that is directly connected to the mobile communication terminal by performing baseband signal processing, wired and wireless conversion, and transmission and reception of wireless signals.

In addition, the base station 112 is arranged in units of cells and transmits a call request generated from the mobile communication terminal to the mobile communication switching station 115 or locates the location of the mobile communication terminal existing in the cell area under its control. Perform location information registration to grasp.

The base station 112 transmits the position information of the base station 112 from the global positioning system (GPS) to the mobile communication terminal through a system parameter message of the forward link call channel. The mobile communication terminal can register new location information by calculating the moving distance of the mobile communication terminal itself using the location information of the base station 112 of the cell to which it belongs.

The location information registration is a processing procedure for informing the mobile communication switching station 115 of the location, status, identifier, slot period, and other features of the mobile communication terminal through the base station 112. This is a procedure for effectively calling the mobile communication terminal when the incoming call is to be established at 115. The location information registration of the mobile communication terminal is performed when the power of the mobile communication terminal is turned on or off, when the mobile communication terminal is handed off, and when the system parameters of the mobile communication terminal are changed.

The base station controller 113 controls the base station 112, and assigns and releases radio channels for the mobile communication terminal, controls transmission output of the mobile communication terminal and the base station 112, soft handoff and hard handoff between cells. It performs (Hard Handoff) determination, transcoding and vocoding, Global Positioning System (GPS) clock distribution, operation and maintenance functions for the base station 112, and the like. The base station controller 113 transmits the call request signal received through the base station 112 to the mobile communication switching center 115.

The mobile communication switching center 115 is composed of a control unit, a call path part and a peripheral device, and performs basic and additional service processing, incoming and outgoing call processing of subscribers, location registration and handoff procedures, and interworking functions with other networks. To perform. The mobile switching center 115 of the IS-95 A / B system includes an access switching subsystem (ASS) that performs distributed call processing, an INS (interconnection network subsystem) that performs centralized call processing, operation and maintenance. Subsystems such as a Central Control Subsystem (CCS) in charge of the centralization function, and a Location Registration Subsystem (LRS) for storing and managing information on mobile subscribers.

In addition, the mobile switching center 115 for the third and fourth generation may include an Internet Protocol (IP) network and an Asynchronous Transfer Mode (ATM) switch (not shown). And increase the efficiency of the line use.

In addition, the mobile communication switching station 115 has a control function for allowing the wireless base station 111 to operate efficiently and an interworking function with the switch of the public switched telephone network, and receives a short message received through the wireless base station 111. The SMS center 116 transmits and stores the short message, and then receives a short message from the SMS center 116 and transmits the short message to the wireless base station 111.

When the mobile communication switching station 115 registers the location information of the user terminal 100 through the wireless base station 111, the subscriber of the user terminal 100 is connected to a visitor location register (not shown) in the mobile communication switching station 115. After temporarily storing the information, the home location register 114 requests the location information registration of the user terminal 100.

The Home Location Register (HLR) 114 receives a location information of a mobile communication terminal from a visitor location register (not shown) and performs functions such as registration recognition, registration deletion, and location verification. To perform. In addition, the home location register 114 stores profile information of the mobile communication terminal which is waiting for a call. Here, the profile information refers to a mobile identification number (MIN), an electronic serial number (ESN) and / or subscribed mobile communication service information of the mobile communication terminal. In a preferred embodiment of the present invention, the profile information of the home location register 114 includes personal information protection service subscriber information. The home location register 114 receives a query from the mobile switching center 115 or the personal information deletion server 117 to determine whether the subscriber is a service subscriber or not. To the mobile communication switching center 115 or the personal information deleting server 117.

Visitor Location Register (VLR) (not shown) is mobile communication of subscriber data in case of location information of visited subscriber where location registration is performed, in case of origination from user terminal 100, incoming call to destination terminal, etc. Received from the switching center 115 and stored. When the mobile terminal registers location information, the visitor location register (not shown) temporarily stores subscriber information and notifies the visitor location register (not shown) to the visitor location register (not shown). It performs a function to utilize the location control, call processing, external operation processing of the mobile communication terminal while receiving and managing a copy of the terminal identification number, the terminal unique number and the service information.

The SMS center 116 receives the short message sent through the mobile communication switching station 115 of the source, and uses the mobile terminal identification number (MIN) of the called terminal to the mobile communication switching station 115 of the called terminal. It converts a message to be sent to an SMS message and transmits it to the called terminal.

The SMS center 116 converts the control message generated from the personal information deletion server 117 into a short message format and transmits it to the user terminal 100.

The personal information deleting server 117 queries the home location register 114 for the presence of subscribers to the personal information protection service, status and location information of the user terminal 100, and receives a control message request signal from the CSMS 120 to delete the command. It generates a message, and transmits the generated delete command message to the SMS center 116.

If the power of the user terminal 100 is turned off, if the remote control of the user terminal 100 is not possible, for example, if it is located in a shadowed area, if the user is not subscribed to the short message service, the control message is the SMS center 116. Is temporarily stored in the SMS center 116 periodically retrieves the status information of the user terminal 100 from the home location register 114. Therefore, the moment the user terminal 100 operates, the home location register 114 registers the location of the user terminal 100, and the SMS center 116 that detects the location of the control message is stored in the form of a short message. It will try to retransmit.

Here, the status information of the user terminal 100 is whether the power of the terminal is in operation, whether it is in a call, whether it has left the service area, whether it is a terminal capable of instant messenger, whether it is a terminal capable of short messages, and the size of the screen. Or, it means any one or more of the terminal capability (Capability) including the support media type.

The CSMS 120 generates a control command for generating a delete command message and transmits a control message request signal including the generated control command to the personal information deletion server 117.

In addition, the CSMS 120 deletes the personal information stored in the memory of the user terminal 100 and receives the deletion success / failure signal generated as a result of the deletion through the mobile communication network 110. CSMS 120 is a subscriber management system that controls security, such as system performance / failure prevention and resolution, intrusion detection, and the like, a mobile communication terminal through the mobile communication network 110, a wired telephone through a public wired network or an Internet network The CSMS 120 is connected to the CSMS 120 using any one or more means such as a personal computer system (PC), and the CSMS 120 generates a control message request signal to be transmitted to the personal information deleting server 117.

2 is a flowchart illustrating a method of protecting personal information stored in a lost mobile communication terminal according to an exemplary embodiment of the present invention.

In the embodiment of the present invention, it is assumed that the user terminal 100 is subscribed to the personal information protection service for convenience of description.

First, the CSMS 120 generates a control message request signal to transmit a control command for deleting personal information stored in the memory of the user terminal 100 to the user terminal 100, and generates the generated control message request signal. To transmit to the personal information deletion server 117 (S200).

Upon receiving the control message request signal, the personal information deleting server 117 generates a message to be transmitted to the mobile communication switching station 115 as a delete command message, and uses the terminal identification number MIN of the user terminal 100 to transmit the message. The home location register 114 of 115 requests and receives the state and location information of the user terminal 100 (S202). Here, the delete command message is a message for controlling the user terminal 100 to delete the contents of the memory in which the personal information is stored. When the delete command message is received by the user terminal 100, the control unit of the terminal is applied. The program is operated to recognize the delete command message, and to delete all the personal information stored in the memory of the user terminal 100.

The personal information deletion server 117 that has received the state and location information of the user terminal 100 analyzes the state information of the user terminal 100 to determine whether the terminal can be remotely controlled, that is, from the personal information deletion server 117. It is determined whether the delete command message can be transmitted to the user terminal 100 (S204). Here, the status information of the user terminal 100 is whether the power of the terminal is in operation, whether it is in a call, whether it has left the service area, whether it is a terminal capable of instant messenger, whether it is a terminal capable of short messages, and the size of the screen. Or, it means any one or more of the terminal capability (Capability) including the support media type.

When the delete command message is transmitted from the personal information deleting server 117 to the user terminal 100, when the status information of the user terminal 100 is located, ie, when the user terminal 100 is located in a power-off or shaded area, the short message service is not subscribed. The deletion command message may not normally be received by the user terminal 100 due to various short message reception error causes such as the like.

When the personal information deletion server 117 analyzes the state information of the user terminal 100 received from the home location register 114 in step S204 and determines that the delete command message can be transmitted to the user terminal 100 (user terminal (100) the remote control, the user terminal 100 power operation, etc.) the generated delete command message is converted into a short message form through the SMS center 116, and the delete command message in the form of a short message to the mobile communication exchange ( Through the paging channel (115) is transmitted to the user terminal 100 via the (S206).

The user terminal 100 receiving the delete command message analyzes the delete command message in a built-in application and stores personal information (phone number list, photo, video, call history, short message) stored in the memory of the user terminal 100. Delete any one or more pieces of information), and generate a deletion success / failure signal as a response signal to the mobile communication switching station 115, the personal information deletion server 117, and the CSMS 120 (S208). ). The memory is a concept including a ROM, an EEPROM, a RAM, a flash memory, a volatile and a nonvolatile memory, and means a memory in which personal information to be deleted is stored. .

In step S204, when the personal information deletion server 117 analyzes the state information of the user terminal 100 received from the home location register 114 and determines that the deletion command message is not transmitted to the user terminal 100, The delete command message is temporarily stored in the SMS center 116 (S210). The SMS center 116 periodically requests the state information of the user terminal 100 through a query with the home location register 114 (S212), and the state information of the user terminal 100 received from the home location register 114. It is determined whether or not it is possible to transmit a delete command message from the SMS center 116 to the user terminal 100 (S214).

If it is determined in step S214 that the delete command message can be transmitted from the SMS center 116 to the user terminal 100, the process proceeds to step S206 to transmit the stored delete command message to the user terminal 100, in more detail. In other words, the home location register 114 performs the location registration of the user terminal 100 and determines that the power of the user terminal 100 can be remotely controlled from the home location register 114 by the SMS center 116. Paging channel through the mobile communication switching center 115 to delete the delete command message stored at regular intervals until the user terminal 100 receives the delete command message based on the preset time interval information. Through the transmission to the user terminal 100.

In this case, generally, under the control of the SMS center 116, the mobile communication switching center 115 calls the user terminal 100 through a paging channel through the wireless base station 111, and the SMS center 116 The short message is retransmitted to the user terminal 100 every predetermined time interval from the first transmission time of the short message reception error to 24 hours.

If it is determined in step S214 that the deletion command message from the SMS center 116 cannot be transmitted to the user terminal 100, the flow proceeds to step S212 and periodically states the state of the user terminal 100 through an inquiry with the home location register 114. Repeat the process of requesting information.

The above description is merely illustrative of the present invention, and those skilled in the art to which the present invention pertains may various modifications without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed herein are not intended to limit the present invention but to describe the present invention, and the spirit and scope of the present invention are not limited by these embodiments. It is intended that the scope of the invention be interpreted by the following claims, and that all descriptions within the scope equivalent thereto shall be construed as being included in the scope of the present invention.

As described above, the present invention has the effect of preventing the leakage of personal information by deleting and destroying the personal information stored in the lost mobile communication terminal through remote control.

Claims (11)

A system for deleting personal information stored in a user terminal through a remote control in a mobile communication network including a wireless base station, a home location register, a short message service center, and a mobile communication switching center. Receiving a control message request signal including a control command to generate a delete command message, generating the delete command message, querying the home location register to request and receive status information and location information of the user terminal, and A personal information deletion server for transmitting a deletion command message to the user terminal identified by the location information through a paging channel. The personal terminal stored in the lost mobile communication terminal, wherein the user terminal receives and analyzes the deletion command message and deletes the personal information stored in the memory according to a processing routine of the deletion command message. Information Deletion System. The method of claim 1, And a subscriber management system generating the control message request signal and transmitting the generated control message request signal to the personal information deletion server. The method of claim 1, The personal information deletion system analyzes the state information of the user terminal and determines whether the deletion command message can be transmitted from the personal information deletion server to the user terminal. . The method of claim 1, The personal information is stored in the lost mobile communication terminal, characterized in that it includes a part or all of the phone number list, photos, videos, call history, short message transmission and reception and personal files stored in the memory of the user terminal Information Deletion System. The method of claim 1, The deletion command message is a personal information deletion system stored in the lost mobile communication terminal, characterized in that for controlling the user terminal to delete the contents of the memory in which the personal information is stored. delete The method according to claim 1 or 3, The state information of the user terminal may include whether the power of the terminal is in operation, whether it is in a call state, whether it has left the service area, whether an instant messenger is available, whether a short message is available, the size of the screen, or the support media. Personal information deletion system stored in the lost mobile communication terminal, characterized in that it comprises any one or more of the terminal (Capability) including the type. delete Remote control of personal information stored in the user terminal in a mobile communication network including a user terminal, a short message service center, a home location register, a mobile telecommunication switching center, and a subscriber management system (CSMS). In the method of deleting through, (a) receiving a control message request signal from the CSMS; (b) receiving the control message request signal to generate a delete command message, and querying the home location register to receive status information of the user terminal; (c) analyzing the state information to determine whether the delete command message can be transmitted to the user terminal; (d) if it is determined in step (c) that the delete command message can be transmitted to the user terminal, transmitting the delete command message to the user terminal through a paging channel; And (e) the user terminal receiving and analyzing the deletion command message and deleting the personal information stored in the memory of the user terminal; Method of deleting personal information stored in the lost mobile communication terminal comprising a. The method of claim 9, wherein the method is (f) temporarily storing the deletion command message in the short message service center when determining that the deletion command message cannot be transmitted to the user terminal in step (c); (g) periodically requesting and receiving status information of the user terminal through a query with the home location register; (h) analyzing the status information to determine whether the delete command message can be transmitted from the short message service center to the user terminal; And (i) transmitting the delete command message to the user terminal through the paging channel if it is determined in step (h) that the delete command message can be transmitted from the short message service center to the user terminal; step The personal information stored in the lost mobile communication terminal, characterized in that it further comprises a. The method of claim 10, (j) if the step (h) analyzes the status information and determines that the deletion command message cannot be transmitted from the short message service center to the user terminal, further comprising the step (g). And deleting personal information stored in the lost mobile communication terminal.

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