KR100469894B1 - Method for Furnishing User Information of Illegal Mobile Equipment - Google Patents

Abstract

The present invention relates to the provision of information on illegal terminal users in an IMT-2000 communication network environment. In particular, user information such as who used illegal terminals as well as prohibiting use of illegal terminals through MAP (Mobile Application Part) protocol messages It relates to a method for providing illegal terminal user information.

Checking the service level of a mobile terminal using a MAP protocol message between a conventional MSC / SGSN and an EIR has a purpose to limit service usage for a mobile terminal classified as a blacklist. Therefore, even if it is confirmed that the mobile terminal belongs to the black list, the EIR has a problem that the information on the user using the illegal terminal is unknown.

According to the present invention, by adding information on a mobile terminal user to a MAP protocol message for checking IMEI service level, the user can not only prohibit illegal stolen terminals but also store and manage useful information such as user or use time of the illegal terminal. It is possible to increase the traceability of the product and to flexibly cope with illegal terminals by increasing the competitiveness of the product and providing high quality services to customers.

Description

Method for providing illegal terminal user information {Method for Furnishing User Information of Illegal Mobile Equipment}

The present invention relates to the provision of information on illegal terminal users in an IMT-2000 communication network environment. In particular, user information such as who used illegal terminals as well as prohibiting use of illegal terminals through MAP (Mobile Application Part) protocol messages It relates to a method for providing illegal terminal user information.

Today's network usage environment requires not only providing reliable services to users regardless of wired or wireless and voice or data communication, but also providing security services between communicating parties. In response to such a request, in a mobile communication network environment, a user accessing a communication system using an authentication center (AUC) is identified as a legitimate user, and a mobile terminal (MS) of a mobile station (MS) using an equipment identity register (EIR). Equipment (ME) provides supplementary services such as checking whether an illegal terminal is illegal and prohibiting the use of illegal terminals.

First, the party user verification using the authentication center (AUC), if the mobile station (MS) wants to access the communication system, first, it is recognized as an authorization user of the communication system and authenticated using system equipment. Authentication and Key Agreement (AKA) procedures should be implemented. AKA uses an Authentication Vector (AV) consisting of RAND (Random number), XRES (Expected Response), CK (Cipher Key), IK (Integrity Key), and AUTN (Authentication Token). This is the procedure to set CK and IK to be used.

In the asynchronous IMT-2000 network environment, the authentication center (AU) delivers n authentication vectors (AV) for use in mutual authentication with the mobile station (MS) to the VLR (Visitor Location Register) / SGSN (Serving GPRS Support Node). To provide.

Successful completion of the AKA procedure ensures confidentiality and integrity of the data transmitted and received between the mobile station (MS) and the VLR / SGSN via the CK and IK.

Meanwhile, the mobile station (ME) of the mobile station (MS) has a unique International Mobile Station Equipment Identity (IMEI), and the EIR classifies the unique IMEI of each mobile terminal (ME) into a plurality of lists by condition to provide status information and related information. It manages information, and this list basically consists of white list, black list and gray list.

The white list consists of IMEI authorized to use the service in the network, and the black list consists of IMEI that is not authorized to use the service in the network, or illegal IMEI such as theft or duplication. It consists of IMEI which needs management for reasons.

Only the mobile station (MS) having an IMEI belonging to the black list is denied use of the service, and the mobile station (MS) having an IMEI belonging to the white or gray list is available for general service. However, the mobile station MS having IMEI belonging to the Gray list is tracked by the network.

The EIR provides IMEI service class information (WhiteList, BlackList, GrayList) for MAP protocol messages (IMEI queries) received from the exchange (MSC / SGSN) while managing the IMEI of all mobile stations MS by list.

The MAP protocol message includes a plurality of network entities constituting the IMT-2000 communication network, for example, a home location register (HLR), a mobile switching center (MSC) / SGSN, a VLR, a base station (BS), AUC, EIR, and SMC ( Short Message Center) is a No.7 signaling message used for information exchange.

Among MAP protocol messages, the types of MAP_CHECK_IMEI protocol messages transmitted and received between MSC / SGSN and EIR and parameter configuration of the corresponding messages are shown in Table 1 below.

Parameter Name Request Indication Response Confirm Invoke id M M (=) M (=) M (=) IMEI C C (=) C C (=) Equipment status C C (=) User error C C (=) Provider error O

Here, M is a required parameter, C is a selection parameter, O is a service operator selection parameter, and (=) indicates that the parameter has the same value.

The request message is a MAP protocol message in which the MSC / SGSN queries the EIR for the IMEI service level of the mobile terminal, and the indication message is the EIR view of the query message.

The response message is a MAP protocol message that responds to the IMEI service level of the mobile terminal through a database search in the EIR, and the confirmation message is a response message viewed from the MSC / SGSN point of view.

Hereinafter, a process of providing IMEI information using a MAP protocol message will be described with reference to FIG. 1.

When the EIR defined in 3G TS 29.002 (GSM 09.02) receives a MAP_CHECK_IMEI [IMEI] query message from the MSC / SGSN (S1), the mobile terminal is reported stolen or lost by searching the database to check the IMEI service level of the mobile terminal. After confirming whether the data has been received, replicated, or not authenticated, etc., by sending a MAP_CHECK_IMEI [Equipment status] response message corresponding to the corresponding IMEI quality of service query to the MSC / SGSN (S2), the mobile subscriber can detect an illegal terminal. Performs a function of restricting the provision of mobile communication services.

In other words, upon receiving the MAP_CHECK_IMEI [IMEI] message containing the IMEI of the mobile station from the MSC / SGSN, the EIR checks the received MAP_CHECK_IMEI [IMEI] message and the contents of the message for errors. Check the service level (WhiteListed, BlackListed, GrayListed).

The MAP_CHECK_IMEI [Equipment status] response message, which stores the checked service level in the Equipment status parameter of the MAP_CHECK_IMEI response message, is transmitted to the MSC / SGSN.

On the other hand, if there is an error in the received MAP_CHECK_IMEI [IMEI] message and the message content, for example, if the system is down or the IMEI in the message is an unknown IMEI, then the MAP_CHECK_IMEI [User error] response message is sent to the corresponding MSC / SGSN. Transmit (S3).

As described above, the purpose of checking the service level of the mobile terminal using the MAP protocol message between the MSC / SGSN and the EIR according to the related art is to limit the service usage for the mobile terminal classified into the blacklist.

Therefore, the MSC / SGSN inquires only about the IMEI of the mobile terminal to check the service level, and the EIR simply checks and responds to the service level of the inquired IMEI, so that the EIR is moved even if the mobile terminal belongs to the black list. Only meaningful information such as the last access time of the terminal was to be stored, and there was a problem in that the information on the user using the illegal terminal was unknown.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide an IMSI and MSISDN of a mobile subscriber using the mobile terminal in addition to the IMEI information of the mobile terminal in a MAP protocol message in which the MSC / SGSN queries the service level of the IMEI. By adding the information, not only the prohibition of use of the illegal terminal but also the traceability of the illegal terminal allow the mobile communication service provider to flexibly deal with the illegal terminal.

1 is a diagram illustrating a conventional MAP protocol message flow.

2 is a diagram illustrating a MAP protocol message flow in accordance with the present invention.

3 is a flowchart for explaining an illegal terminal user information providing operation according to the present invention.

A feature of the present invention for achieving the above object comprises the steps of: receiving a MAP protocol message containing mobile terminal identification information, mobile terminal user identification information and mobile terminal user ISDN information from the mobile communication switch; Confirming a service level of the mobile terminal by searching a database using identification information of the mobile terminal included in the received MAP protocol message; Storing the mobile terminal user identification information and the mobile terminal user ISDN information included in the received MAP protocol message when the mobile terminal is a lost, stolen or duplicated illegal terminal in a corresponding record of the database and; It provides a method for providing illegal terminal user information comprising the step of recording the information contained in the received MAP protocol message in the illegal terminal use information storage file, and transmitting an alarm signal to the operator interface block.

Here, the database includes mobile terminal identification information, mobile terminal subscriber identification information, mobile terminal type information, physical state information of the mobile terminal, service class information of the mobile terminal, initial registration time information of the mobile terminal, and personal information of the mobile terminal subscriber. And the ISDN information record of the mobile terminal user information and the mobile terminal user.

The illegal terminal usage information file includes mobile terminal usage time information, mobile terminal identification information, mobile terminal subscriber identification information, mobile terminal user identification information, and mobile terminal user ISDN information.

The present invention provides a mobile subscriber integrated service digital network (IMSI) and a mobile subscriber identity (IMSI) information of a mobile subscriber using a mobile terminal in a MAP protocol message used by the MSC / SGSN to query the service level of the mobile terminal with an EIR. A modified MAP_CHECK_IMEI message with the added information, a database for storing IMSI and MSISDN information of the mobile subscriber in the EIR, and an illegal terminal usage information file.

IMSI is mobile subscriber identification information including Mobile Country Code (MCC), Mobile Network Code (MCC), and Mobile Subscriber Identification Number (MSIN), and MSISDN is Country Code (CC), National Destination Number (NDC), and Subscriber (SN) ISDN identification information used by a mobile subscriber including a number).

The modified MAP_CHECK_IMEI protocol message is shown in Table 2 below.

Parameter name Request Indication Response Confirm Invoke id M M (=) M (=) M (=) IMEI C C (=) C C (=) IMSI C C (=) MSISDN C C (=) Equipment status C C (=) User error C C (=) Provider error O

Here, M is a required parameter, C is a selection parameter, O is a service operator selection parameter, and (=) indicates that the parameter has the same value.

The structure of the database managed by the EIR is shown in Table 3 below.

Record name meaning IMEI ME identification information IMSI ME Subscriber Identity ME TYPE ME shape information ME PHYSICAL STATUS ME physical status display ME SERVICE GRADE ME service class indication ME REGISTATION TIME ME initial registration time OTHER INFO Other information (name, address, contact, etc.) ACCESS IMSI [1..N] NODE_INFORMATION [1..N] ACCESS_TIME [1..N] [1..N] ME user IMSI information [1..N] network node information [1..N] access time information ACCESS MSISDN [1..N] NODE_INFORMATION [1..N] ACCESS_TIME [1..N] [1..N] ME user MSISDN information [1..N] network node information [1..N] access time information

An embodiment of a file structure in which illegal terminal usage information of the EIR is stored is shown in Table 4 below.

[17:44:04, cim.c (675)] ==================================== === [17:44:04, cim.c (676)] Access time: Tue May 21 17:44:04 [17:44:04, cim.c (679)] IMEI = 1020304050607080 [17:44:04, cim.c (680)] IMSI = 450081034381003 [17:44:04, cim.c (688)] Access IMSI = 450081034381000 [17:44:04, cim.c (689)] Node Type = SGSN [17:44:04, cim.c (692)] ISDN Number = 1039460300 syncopation [17:44:04, cim.c (720)] ==================================== ===

The file information may be stored in an ASCII file format, encrypted for security, or stored in a binary format, and the information and order of the stored information may be changed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 and 3.

2 is a flowchart illustrating a MAP protocol message flow according to the present invention, and FIG. 3 is a flowchart for explaining an operation of providing illegal terminal user information by an EIR.

MSC / SGSN composes MAP_CHECK_IMEI query message when querying IMEI service level of mobile terminal, and adds IMSI and MSISDN information of mobile subscriber (hereinafter referred to as 'mobile terminal user') to use service through corresponding mobile terminal. A MAP_CHECK_IMEI [IMEI, IMSI, MSISDN] query message is transmitted to the EIR (S10).

Therefore, the EIR checks whether the MAP_CHECK_IMEI [IMEI, IMSI, MSISDN] query message and message contents transmitted from the MSC / SGSN are in error, and if there is no error, checks the service level of the corresponding IMEI by searching the database of Table 3 above. S20).

Then, the checked service level is stored in the Equipment status parameter of the MAP_CHECK_IMEI response message, and the MAP_CHECK_IMEI [Equipment status] response message is transmitted to the MSC / SGSN (S30).

At this time, if the service grade check result through the database search is the service grade of the IMEI is classified as a black list, that is, if the mobile terminal is confirmed as a stolen, lost or duplicated mobile terminal (S40), the EIR is MSC / SGSN The information on the illegal terminal user (ACCESS IMSI related information and ACCESS MSISDN related information) is stored in the corresponding record of the database of Table 3 with reference to the information contained in the MAP_CHECK_IMEI [IMEI, IMSI, MSISDN] query message received from the S50. ).

In addition, the information contained in the MAP_CHECK_IMEI [IMEI, IMSI, MSISDN] query message transmitted from the MSC / SGSN is recorded in the illegal terminal usage information file (S60), and the operation interface block OMS (Operations and Maintenance System) / MMI (Man Machine) Interface) to activate the alarm information by transmitting a BLACK_LIST_ACCESS_NOTIFY signal (S70).

Therefore, the operator can find out who (Access IMSI), when (Access time) and how (Node Type, ISDN Number) of the stolen or lost illegal terminal (IMEI) by searching the database or illegal terminal usage information storage file. You will know.

On the other hand, if there is an error in the MAP_CHECK_IMEI [IMEI, IMSI, MSISDN] query message or the message content transmitted from the MSC / SGSN, an MAP_CHECK_IMEI [User Error] message is transmitted to the MSC / SGSN.

In addition, the embodiments according to the present invention are not limited to the above-described embodiments, and various alternatives, modifications, and changes can be made within the scope apparent to those skilled in the art.

Particularly, in the present invention, the EIR receives the MAP_CHECK_IMEI message from the MSC / SGSN to store and manage information on the user of the illegal terminal, but the HLR (Home Location Register) or AUC (Athentication Center) or other database system other than the EIR is used. By providing the same function as the EIR, it is possible to check the availability of the illegal terminal and to store and manage user information using the illegal terminal.

As described above, the present invention adds the information on the mobile terminal user to the MAP protocol message for checking the IMEI service level, thereby storing and managing useful information such as user illegal use of the illegal terminal as well as prohibiting use of the illegal terminal. It has the effect of increasing the traceability of illegal terminals and increasing the competitiveness of the product and providing quality services to customers by allowing the mobile communication service provider to flexibly cope with the illegal terminals.

Claims (3)

When the mobile communication exchange receives the service grade query from the mobile terminal, generating and transmitting a MAP protocol message including the mobile terminal identification information, the mobile terminal user identification information, and the mobile terminal user ISDN information to the EIR; Confirming a service level of the mobile terminal by searching a database using the mobile terminal identification information included in the MAP protocol message in the EIR receiving the MAP protocol message from the mobile communication exchange; As a result of confirming the service level in the EIR, if the mobile terminal is identified as a lost, stolen or duplicated illegal terminal, the EIR may display the mobile terminal user identification information and the mobile terminal user ISDN information included in the received MAP protocol message. Storing the corresponding record in the database; And transmitting, by the EIR, the information contained in the received MAP protocol message to an illegal terminal usage information storage file and transmitting an alarm signal to an operator interface block. The method of claim 1, The database includes mobile terminal identification information, mobile terminal subscriber identification information, mobile terminal type information, physical state information of the mobile terminal, service class information of the mobile terminal, initial registration time information of the mobile terminal, personal information of the mobile terminal subscriber, and movement. The illegal user information providing method comprising a terminal user information and a mobile terminal user ISDN information record. The method of claim 1, The illegal terminal usage information file includes mobile terminal usage time information, mobile terminal identification information, mobile terminal subscriber identification information, mobile terminal user identification information, and mobile terminal user ISDN information. .