KR101002187B1 - Method and system for managing an international mobile equipment identity of mobile communication equipment - Google Patents
Method and system for managing an international mobile equipment identity of mobile communication equipment Download PDFInfo
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- KR101002187B1 KR101002187B1 KR20080004746A KR20080004746A KR101002187B1 KR 101002187 B1 KR101002187 B1 KR 101002187B1 KR 20080004746 A KR20080004746 A KR 20080004746A KR 20080004746 A KR20080004746 A KR 20080004746A KR 101002187 B1 KR101002187 B1 KR 101002187B1
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Abstract
The present invention discloses a method and system for managing a terminal identification number of a mobile communication terminal. A terminal identification number management method according to an embodiment of the present invention is a terminal identification number management method of a mobile communication terminal having a smart card, and when a preset event for managing the terminal identification number is received, the mobile terminal corresponds to the event. Determining whether there is subscriber information of the communication terminal, if the subscriber information of the mobile communication terminal does not exist, requesting and receiving a terminal identification number from the mobile communication terminal, and whether the received terminal identification number is normal And transmitting the received terminal identification number to a terminal identification number register for judging.
International Mobile Equipment Identity (IMEI), Equipment Identity Register (EIR), Universal Subscriber Identity Module (USIM), Mobility, Illegal Terminal
Description
The present invention relates to managing an International Mobile Equipment Identity (IMEI), and more particularly, to request and receive a terminal identification number to a corresponding mobile communication terminal when a specific event occurs, as well as the location registration of the terminal. Determining whether or not, and thereby preventing the damage caused by the loss of the mobile terminal that may occur due to the mobility of the Universal Subscriber Identity Module (USIM) card, and identifying the terminal of the mobile terminal capable of managing the terminal identification number in real time It is about number management method and system.
As computer, electronic, and communication technologies have made rapid progress, various wireless communication services using wireless networks have been provided. The most basic wireless communication service is a wireless voice call service that provides a voice call to a mobile terminal user wirelessly, and can provide services regardless of time and place. In addition, wireless Internet services that provide Internet services to users of mobile communication terminals through wireless communication networks have also been actively provided.
Therefore, the subscribers of the mobile communication service can freely move and talk with the other party anytime and anywhere using the wireless communication service, and also provide various information necessary for life through the data service through the wireless Internet, for example, news, weather and sports. , Securities, exchange rates, and traffic information may be provided in various forms such as text, voice, and image.
However, in order to properly receive such a wireless data service, the mobile communication system needs to know the terminal information of the subscriber correctly. For example, in order to provide a ringtone setting service, it is necessary to check how many chords the mobile communication terminal is, and to provide a desktop screen or a video, it is necessary to determine how many bits of color the mobile communication terminal supports. In addition, it is necessary to check whether a multimedia messaging service (MMS) is available, whether a multimedia video is available, whether music on demand (MOD) is available, and whether MP3 is available.
In the conventional IS-95A / B, CDMA 1X, and 1X EV-DO networks, subscriber information and terminal information were the same concept. Accordingly, the terminal information of the subscriber could be changed only through a processor called device change. However, in the WCDMA network, customer information and terminal information may be separated by inserting and using a universal subscriber identity module (USIM) card including personal information in a mobile communication terminal.
That is, in the WCDMA network, each terminal receives a terminal identification number from a terminal requesting location registration by managing a terminal identification number (IMEI) and subscriber information, which are terminal information of a mobile communication terminal. In case of normality, by performing location registration, a mobile communication service is provided to a corresponding terminal.
As described above, the terminal identification number management in the conventional WCDMA network system considers the traffic volume, and manages the terminal identification number register (EIR) only when the location registration is requested from the terminal due to the power on / off of the terminal. It transmits the terminal identification number to the Identity Register to determine whether the terminal requesting location registration is a normal terminal or an illegal terminal based on whether the terminal identification number is normal.
However, in the conventional method of managing the terminal identification number, since the terminal identification number determines whether the terminal is normal at the time of power off / on of the terminal, others are lost before reporting the lost terminal to the illegal terminal. Even if the location registration is performed using the terminal, the EIR determines that the terminal is a normal terminal and performs location registration, thereby allowing the mobile terminal to receive a mobile communication service.
Therefore, since it can be used as a normal terminal until the power of the illegal terminal that is determined to be a normal terminal and receives a mobile communication service is turned off / on, it is caused by the difference between the time when the terminal is lost and when it is reported as an illegal terminal. There is a need for a way to solve the problem.
An object of the present invention was created to solve the above problems, the terminal identification number management method of the mobile communication terminal that can prevent the use of the mobile communication service using the illegal terminal in advance by managing the terminal identification number in real time And to provide the system.
Another object of the present invention is to transmit a control signal for turning off a terminal to a mobile communication terminal corresponding to an illegal terminal whose terminal identification number is abnormally changed, thereby preventing the use of a mobile communication service using an illegal terminal. The present invention provides a method and system for managing a terminal identification number of a terminal.
Still another object of the present invention is to request and receive a terminal identification number from a mobile communication terminal in which subscriber information is deleted when subscriber information of a mobile communication terminal corresponding to an event generated when a preset event occurs is received, and identify the received terminal. The present invention provides a method and system for managing a terminal identification number of a mobile communication terminal capable of adjusting a load of a terminal identification number register by determining whether a terminal is normal through a number.
In order to achieve the above object, a terminal identification number management method according to an aspect of the present invention is a terminal identification number management method of a mobile communication terminal having a smart card, wherein a predetermined event for managing the terminal identification number is received. Determining whether subscriber information of the mobile communication terminal corresponding to the event exists among previously stored subscriber information; Requesting and receiving a terminal identification number from the mobile communication terminal when subscriber information of the mobile communication terminal does not exist; Transmitting the received terminal identification number to a terminal identification number register; And receiving a result of whether the terminal identification number is normal from the terminal identification number register, and if the terminal identification number is abnormal, transmitting a command for usage restriction to the mobile communication terminal.
In this case, the requesting and receiving of the terminal identification number may include determining whether an item for determining a terminal identification number is set when the subscriber information of the mobile communication terminal does not exist, and when the item is set, to the mobile communication terminal. The terminal identification number can be requested and received.
In this case, the terminal identification number management method comprising the steps of: transmitting a paging signal for the subscriber location registration withdrawal from the terminal identification number register to the corresponding mobile communication terminal; And if there is no response to the paging signal from the corresponding mobile communication terminal, deletes subscriber information of the corresponding mobile communication terminal, and transmits a control signal to turn off the power to the corresponding mobile communication terminal if there is a response to the paging signal. It may further comprise a step.
In this case, the event may be at least one of a call service, a data service, a message service, and a routing area (RA) update.
According to an aspect of the present invention, there is provided a terminal identification number management system, comprising: a terminal identification number register for determining whether a received terminal identification number is normal; And when a preset event for managing a terminal identification number is received, determines whether there is subscriber information of a mobile communication terminal corresponding to the event among stored subscriber information, and if the subscriber information does not exist, the terminal to the mobile communication terminal. Request and receive an identification number, transmit the received terminal identification number to a terminal identification number register, and receive a result of whether the terminal identification number is normal from the terminal identification number register to move if the terminal identification number is abnormal And a switching center for transmitting a command for usage restriction to the communication terminal.
In this case, the subscriber station determines whether an item for determining a terminal identification number is set when the subscriber information of the mobile communication terminal does not exist and requests and receives a terminal identification number from the mobile communication terminal when the item is set. In addition, when all of the previously stored subscriber information is deleted by the system operation, the item for determining the terminal identification number may be changed to the setting state after processing the item for the predetermined time for the unset state.
In this case, the smart card may be a USIM card.
The present invention has the effect of preventing the use of a mobile communication service using an illegal terminal in advance by managing the terminal identification number in real time.
In addition, the present invention has the effect of preventing the use of the mobile communication service using the illegal terminal by transmitting a control signal for turning off the terminal to the mobile communication terminal corresponding to the illegal terminal whose terminal identification number is abnormally changed. .
In addition, the present invention can achieve an economic effect by preventing the use of illegal terminals.
In addition, the present invention, if the subscriber information of the mobile communication terminal corresponding to the event generated when the preset event occurs is deleted by requesting the terminal identification number to the mobile communication terminal from which the subscriber information is deleted, and receives the received terminal identification number By determining whether or not through the normal terminal, there is an effect that can adjust the load of the terminal identification number register.
Other objects and features of the present invention in addition to the above objects will be apparent from the description of the embodiments with reference to the accompanying drawings.
Hereinafter, a method and a system for managing a terminal identification number of a mobile communication terminal according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. 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 the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
Prior to the detailed description of the present invention, the mobile communication terminal in the present invention is a mobile communication terminal having a smart card, for example, a SIM card in the case of GSM, a USIM card in the case of WCDMA, and in the present invention, a mobile terminal having a USIM card. The communication terminal will be described.
Here, the USIM card is a smart card that is capable of storing and calculating data and information used in a WCDMA terminal. The USIM card may include an ID, a location information, an encryption key, a data service variable value, and a telephone number (IMSI: International). Various information such as Mobile Subscriber Identity), function and environment variable value, service network information, service table, subscriber authentication key, PIN, call time and fee information are stored.
The present invention is to manage the terminal identification number so as to prevent the use of the illegal terminal that can be generated while providing the mobility of the USIM card.
1 is a block diagram of a terminal identification number management system according to an embodiment of the present invention.
Referring to FIG. 1, a terminal identification number management system includes a switching center (SGSN / MSC) 120, a terminal identification number register (EIR) 130, and a home location register (HLR) 140.
The EIR 130 is a register for storing the terminal identification number. When the terminal identification number is received from the
In addition, when the EIR 130 receives a terminal identification number for the illegal terminal from the Customer Care Billing System (CCBS) 150, the
In addition, the EIR 130 transmits a signal for identifying the location of the illegal terminal to the
When the HLR 140 receives a signal for requesting a location for an illegal terminal from the
When the location registration request signal is received from the
For example, when the
In addition, when the
On the other hand, if the
Here, the subscriber information stored in the
Accordingly, the present invention constitutes an item (hereinafter referred to as an "IMEI check item") for determining the terminal identification number in consideration of the case where the subscriber information is deleted by the system operation, and identifies the terminal according to the setting state of the item. It is preferable to determine whether to perform a process of requesting and receiving a number and determining the received terminal identification number through the
For example, when an event occurs in relation to a mobile communication terminal in which subscriber information is deleted (not present), it is determined whether the IMEI check item is set, and if the IMEI check item is set, request the terminal identification number from the mobile communication terminal. After receiving and transmitting to the
Here, if the subscriber information is deleted due to a system operation or the like, the
2 is a flowchart illustrating a method for managing a terminal identification number according to an embodiment of the present invention.
Referring to Figure 2, the terminal identification number management method of performing the location registration of the terminal (S210), location registration withdrawal process for the illegal terminal subscribers according to the report to the lost terminal (S220) and terminal identification to the lost terminal After the request for a number, the terminal identification number determination process is normal (S230).
Referring to the process of performing the location registration of the terminal (S210), when the exchange is powered on the mobile communication terminal is turned on / off, when a signal (Attach REQ) for the location registration request transmitted from the mobile communication terminal is received The mobile station has requested and received a terminal identification number (IMEI request).
The exchange transmits the received terminal identification number to the EIR, and the EIR compares the received terminal identification number (IMEI) with previously stored data to determine whether the terminal identification number is normal.
As a result of determining whether the terminal identification number is normal, the EIR transmits a result value (white) of normal to the switching center if it is determined to be normal, and transmits a result value (black) of abnormality to the switching center.
When the exchange receives a result value (black) of an abnormality from the EIR, that is, the terminal requesting the location registration is a reported illegal terminal, it transmits a signal for the location registration failure to the mobile communication terminal requesting the location registration.
On the other hand, when the exchange receives a result value (white) of normal from the EIR, it requests the location registration of the mobile communication terminal to the HLR (Update Location REQ), and the subscriber subscriber data for location registration is received from the HLR. If requested, the location registration is performed by transmitting information (Insert Subscriber Data ack) to the HLR. When the exchange receives a signal from the HLR indicating that location registration has been performed (transmission location REQ response), the switching center transmits a signal for successful location registration to the mobile communication terminal to perform a location registration process.
Referring to the process of withdrawing the location registration with respect to the illegal terminal subscriber according to the report to the lost terminal (S220), when the EIR receives the terminal identification number for the illegal terminal reported and transmitted to the illegal terminal from the CCBS, the received terminal identification number Change the status of the device to black, and request and receive the exchange information registered by the illegal terminal to the HLR.
The EIR transmits a location registration revocation request signal (Cancel_Location REQ (subscriptionWithdraw)) for the illegal terminal subscriber and receives a response signal (Cancel_Location resp) for the illegal terminal subscriber based on the exchange location information received from the HLR. .
Of course, the EIR may transmit a signal for deleting illegal terminal information registered in the HLR based on the received response signal.
The exchange exchanges a paging signal (Paging REQ) to the subscriber terminal, i.e., the illegal terminal, upon receiving the location registration revocation request signal for the subscriber from the EIR, and waits for a response signal.
When an exchange terminal receives a response signal (Service REQ (paging resp)) for the paging signal from the illegal terminal, the switching center remotely turns off the illegal terminal by sending a control signal (Detach REQ) to turn off the terminal. Let's do it.
On the other hand, if the exchange does not receive a paging signal from the illegal terminal, for example, if the illegal terminal is not in the shadow area where the paging signal cannot receive the paging signal, the switching center is illegally stored in the exchange. Delete the terminal subscriber information.
Through this process, the terminal that is reported as an illegal terminal is turned off or subscriber information about the illegal terminal is deleted.
Referring to the process of determining whether the terminal identification number is normal when the event of the illegal terminal in which the subscriber information is deleted (S230), the exchange station has a preset event, for example, an event such as a call service, a message service, a data service, and an RA update. When it occurs, it is determined whether the subscriber information of the terminal associated with the generated event, for example, the terminal requesting the service or the RA update is not present, that is, deleted.
As a result of determining whether the subscriber information is deleted, the exchange station requests and receives a terminal identification number (IMEI) from the terminal when the subscriber information of the terminal is deleted and does not exist, and the information on the EIR is determined to determine whether the terminal identification number is normal. To send. That is, by requesting a terminal identification number to determine whether the terminal where the event occurred is an illegal terminal or a normal terminal and transmitting the information to the EIR, it is possible to prevent the use of the mobile communication service using the illegal terminal.
Of course, when the subscriber information exists, the exchange performs a short message transmission process when the corresponding event, for example, a short message is sent.
3 is a flowchart illustrating another operation of step S230 illustrated in FIG. 2.
Referring to FIG. 3, when a specific event occurs from a terminal whose location registration is successful, the exchange determines whether to delete the subscriber information of the mobile communication terminal requesting the event, and if the subscriber information is deleted, the state of the preset IMEI check item. Check it.
As a result of confirming the IMEI check item, if the IMEI check item is set, the terminal identification number is requested and received by the mobile communication terminal, and the received terminal identification number is transmitted to the EIR to determine whether the terminal is a normal terminal or an illegal terminal.
On the other hand, if there is subscriber information of the terminal requesting the event or the subscriber information is deleted but the IMEI check item is not set, the exchange performs the requested event, for example, a call or message service or an RA update.
Here, the IMEI check item is for considering the case where the subscriber information stored in the switching center is deleted due to system operation, etc., and the switching center maintains the IMEI check item in an unset state for a certain period when the power is turned off / on by the system operation. It is preferable to change the setting state after the operation. At this time, the predetermined period of changing the IMEI check item from the unset state to the set state may be determined by the mobile communication service provider providing the mobile communication service, and this period may be determined according to the system working time of the switching center and the capacity of the switching center. Can vary.
As described above, the present invention deletes the subscriber information of the illegal terminal in the exchange station where the illegal terminal is registered, and when an event occurs by the illegal terminal in which the illegal terminal information is deleted, requests and receives a terminal identification number from the illegal terminal and receives the information therefor. By transmitting to the EIR, it is possible to prevent the mobile terminal from receiving a mobile communication service using an illegal terminal.
In addition, by setting an event for requesting a terminal identification number and skipping the process of determining the terminal identification number in an exceptional situation in which the subscriber information is deleted due to a special case such as a system operation, the load of the EIR can be reduced.
The terminal identification number management method and system thereof of the mobile communication terminal according to the present invention can be modified and applied in various forms within the scope of the technical idea of the present invention and are not limited to the above embodiments. In addition, the embodiments and drawings are merely for the purpose of describing the contents of the invention in detail, not intended to limit the scope of the technical idea of the invention, the present invention described above is common knowledge in the technical field to which the present invention belongs As those skilled in the art can have various substitutions, modifications, and changes without departing from the spirit of the present invention, it is not limited to the embodiments and the accompanying drawings. And should be judged to include equality.
1 is a block diagram of a terminal identification number management system according to an embodiment of the present invention.
2 is a flowchart illustrating a method for managing a terminal identification number according to an embodiment of the present invention.
3 is a flowchart illustrating another operation of step S230 illustrated in FIG. 2.
<Description of Symbols for Main Parts of Drawings>
120: exchange office (SGSN / MSC)
130: terminal identification number register (EIR)
140: home position register (HLR)
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