KR100634971B1 - Mobile communication system for discount zone service what preventing from injustice using and preventing method thereof - Google Patents

Abstract

A mobile communication system for providing a discount zone service capable of preventing illegal use and a method for preventing the illegal use are provided to enable a discount marker to set a discount zone for providing the discount zone service and enable a discount zone service system to determine the illegal use by comparing a discount home base ID with the present home base ID, thereby easily preventing the illegal use of the discount zone service. A mobile communication system capable of preventing illegal use comprises a discount marker, a mobile station(3), a base mobile communication system(4), and a discount zone service system(17). The discount zone service system(17) registers discount home base IDs(Identifications) as IDs of base stations(5) within a region in which a discount zone(2) is set. When receiving a discount generation message, the discount zone service system(17) determines the illegal use by comparing the discount home base ID with the current home base ID. According to the determination result, the discount zone service system(17) determines whether to provide the discount zone service or not.

Description

Mobile Communication System for Discount Zone Service What Preventing From Injustice Using And Preventing Method Thereof}

1 is a diagram showing a cell and a zone of a conventional cellular phone system.

2 is a view for explaining a wired and wireless interworking service providing a call service by interworking a wired telephone network and a mobile communication network.

3 is a diagram schematically illustrating a configuration of a mobile communication system that provides a discount zone service capable of preventing illegal use according to an embodiment of the present invention.

FIG. 4 is a diagram showing the configuration of the discount zone service system 17 of FIG. 3 in more detail.

5 is a diagram briefly showing a method for preventing illegal use in a discount zone service according to the present invention;

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

1: discount marker 2: discount zone

3: mobile communication terminal 4: base mobile communication system

5; Base station 6: base station controller

7: Mobile Switching Center 8: Location Information Registration System

9: Home Location Register 10: Visitor Location Register

11: service processing system 12: short message service center

13: subscriber database 14: subscriber management system

16: Billing System 17: Discount Zone Service System

18: discount zone server 19: analog mobile communication network

20: public switched network

The present invention relates to a mobile communication system and a service method thereof, and more particularly, to a mobile communication system having a discount marker for providing a discount zone service and a service providing method, and in particular, to provide a discount zone service capable of preventing unauthorized use. It relates to a mobile communication system and a method for preventing fraud.

With the recent development of communication-related technology, many communication services using wired / wireless are provided to users. The development of optical fiber and related systems has made it possible to realize the optical communication network, and the transmission speed and amount of voice and data have increased. In addition, wireless communication systems have evolved from services that only support voice services, and are now able to receive voice and data related services during high-speed travel. Furthermore, wireless data services use mobile phone systems using Code Division Multi Access (CDMA), Frequency Division Multi Access (FDMA), and Time Division Multi Access (TDMA) technologies, and technologies such as Bluetooth and Ubiquitous. The service provision area and the user are increasing rapidly by the wireless internet system.

Advances in technology and the resulting increase in the number of users of these services will lead to consideration of both the service provider and the user providing the service and the issues of reliability and efficiency of service delivery.

In this regard, telecommunications service providers that offer telecommunications services offer a variety of discounts and service charges to retain their customers and attract third parties and potential customers. A typical example is a DuPont (DU Phone) service that links a mobile phone terminal and a wired telephone network provided by a provider of a mobile phone service and a wired telephone company.

1 is a diagram showing a cell and a zone of a conventional cellular phone system.

Referring to FIG. 1, a conventional mobile phone system includes a base station 36 that performs voice and data communication directly with a user's mobile phone. The base station forms a cell 32, which is a service providing area ranging from several hundred meters (m) to several tens of kilometers (Km). In addition, a zone 34 is formed which considers a plurality of cells, that is, a plurality of base stations as one same area, for the purpose of subscriber, base station management, and the like.

2 is a diagram illustrating a wired / wireless interworking service that provides a call service by interworking a wired telephone network and a mobile communication network.

Referring to FIG. 2, the DuPont service is a service for setting a service area and interworking the mobile phone in the set area with the wireline network 40 by the service area repeater instead of the base station 36. Referring to the conventional wired telephone system as an example, a telephone 44 is connected to the installed wired telephone network 40 and a repeater (Access Point) 42 for interworking the mobile telephone 48 and the wired telephone network 40 is installed. . The repeater 42 and the mobile phone 48 communicate by a short range wireless communication technology such as Bluetooth, and the service providing area 46 is set to several tens of meters (m) by the service radius of Bluetooth. The subscriber with the mobile phone 48 enters the area set by the repeater 42, and the repeater 42 detects this when the subscriber tries to make a call. The repeater 42 that detects the call attempt blocks the connection between the mobile phone 48 and the mobile phone system, and attempts to interwork the mobile phone 48 with the wired telephone network 40. When the interworking with the wired telephone network 40 is established, the mobile telephone 48 is used as a wireless terminal device of the home wired telephone 44. In addition, since the user does not use a mobile phone system, the user can make a call at a landline phone rate lower than that of the mobile phone rate. The DuPont service has an advantage in that the setting of the service providing area 46 is accurate. However, the DuPont service has a disadvantage in that the subscriber occupies a wired telephone line at the time of a call like the wired telephone 44. That is, DuPont service has a disadvantage in that when only one wire line is installed, when one subscriber occupies the line, the other subscriber must use the call service through the mobile communication network. Therefore, there is a demand for a method capable of providing the above-mentioned service through a more accurate and reasonable method.

Accordingly, an object of the present invention is to provide a mobile communication system and a service providing method having a discount marker for providing a discount zone service, and in particular, a mobile communication system and a illegal use prevention providing a discount zone service capable of preventing unauthorized use. To provide a way.

In addition, another object of the present invention is to divide the mobile communication system into a base mobile communication system and a discount zone service system to provide a discount zone service capable of preventing fraudulent use to determine and cope with fraudulent use of the discount zone service. It is to provide a mobile communication system and a method of preventing fraudulent use.

In addition, another object of the present invention is to prevent fraudulent use to prevent fraudulent use of the discount zone service by presenting a specific configuration, role, and service provision method of the discount zone service system for providing a discount zone service. Is to provide a mobile communication system and a method for preventing fraudulent use of a discount zone service.

In addition, another object of the present invention is to present a method of using a discounted home base station and the current base station ID to prevent fraudulent use, and to present a method of setting the discounted home base station ID and the current base station ID in the mobile communication system, The present invention provides a mobile communication system and a method for preventing fraudulent use of a discount zone service capable of preventing fraudulent use.

In order to achieve the above object, a mobile communication system that provides a discount zone service capable of preventing unauthorized use according to the present invention includes a discount marker for setting a discount zone to provide a discount zone service for discounting a call charge, and the discount. A mobile communication terminal for creating a discount rate application message for providing a discount zone service by confirming the discount marker in a zone, and a base mobile communication for delivering a discount rate application message to a discount zone service system for providing a discount zone service. The system and the home base station ID, which is the base station ID of the region where the discount zone is set, are registered, and upon receiving the discount rate application message, the discount home base station ID is compared with the current base station ID which is the base station ID of the region where the mobile communication terminal is located. Determination of fraudulent use, and discount zone based on judgment result A discount zone service system is provided for determining whether to provide a service.

The mobile terminal further includes a base mobile communication system for relaying communication between the discount zone service system and the mobile communication terminal, wherein the discount zone service system includes a location information registration system for storing and managing a discount home base station ID and a current base station ID; A discount zone server that receives the discount rate application message, compares the discount home base station ID with the current base station ID, and determines whether to apply the discount rate, and information of a user who uses the discount zone service is stored in the request of the discount zone server. And a billing system for calculating and charging a discount zone service fee for use in accordance with a request from a discount zone server.

The location information registration system includes a home location register for storing a home base station ID, which is a base station ID at the time of initial registration of the mobile communication terminal, and a visitor location register for storing an ID of a base station communicating with a mobile communication terminal after registration. It includes.

The home base station ID may be changed to the discount home base station ID when the user subscribes to the discount zone service. The base mobile communication system may include a base station, a base station controller, and a mobile switching center. It may be the mobile switching center.

The home zone server may be in charge of at least one of the location registration system, the billing system, and the subscriber management system.

The fraud prevention method according to the present invention includes a discount marker for setting a discount zone for providing a discounted rate in a mobile communication service, and a mobile communication system including a mobile communication terminal for providing the mobile communication service to a user. A service providing method comprising the steps of: setting a discount zone to provide a discount zone service, registering a discount home base station ID, which is a base station ID of a region where a discount zone is set, and a discount marker in the discount zone by the mobile communication terminal Acquiring a confirmation message, creating a discount rate application message for providing a discount zone service, delivering a discount rate application message to a discount zone service system for providing a discount zone service, and applying a discount rate application message Home base station ID and mobile communication terminal Follow the steps and the comparison result of comparing the current base station ID of a base station ID of the region includes determining the availability of discounted service zone.

The registering of the discount home base station ID may be performed only when the user first subscribes to the discount zone service.

The acknowledgment of the discount marker may include receiving, by the mobile communication terminal, a discount setting signal generated from the discount marker when the mobile communication terminal is in the discount zone.

The discount rate application message may be prepared as a short message and may be transmitted by a short message service.

The delivering of the discount rate application message may include establishing a communication channel with a base mobile communication system of the mobile communication system to deliver the discount rate application message, and transmitting the discount rate application message to the base mobile communication system. It may include the step of being delivered to the discount zone service system by.

The comparing of the discount home base station ID and the current base station ID may include: requesting, by the discount zone server, the discount home base station ID and the current base station ID from the location information registration system; And determining whether the current base station ID is the same.

Other features and operations of the present invention in addition to the above object will be apparent from the detailed description of the embodiments with reference to the accompanying drawings.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 to 5.

FIG. 3 is a diagram schematically illustrating a configuration of a mobile communication system that provides a discount zone service capable of preventing illegal use according to an exemplary embodiment of the present invention.

Referring to FIG. 3, a mobile communication system according to a first embodiment of the present invention includes a discount marker 1 for setting a discount zone to provide a discount zone service for discounting a call rate, and a discount marker in a discount zone. A mobile communication terminal 3 for creating a discount rate application message for providing a discount zone service to a user by confirmation of (1), and a discount zone service system 17 for providing a discount zone service for a discount rate application message. The base mobile communication system 4 to be transmitted to the base station and the home base station ID which is the base station ID of the area where the discount zone is set are registered, and the home base ID and the mobile communication terminal 3 are located when the discount rate application message is received. A discount zone service system that compares the current base station ID, which is the base station ID of the region, to determine fraudulent use, and provides a discount zone service according to the determination result Includes a (17). In addition, the mobile communication system for providing a discount zone service according to the present invention further includes a base mobile communication system 4 for relaying communication between the discount zone service system 17 and the mobile communication terminal 3.

A discount marker (hereinafter, referred to as "DM") 1 sets a discount zone to provide a discount zone service for discounting call rates, and the mobile communication terminal located within the set discount zone uses the discount zone service. To generate an acknowledgment signal. To this end, the DM 1 communicates with the mobile communication terminal 3 in the discount zone through a second wireless communication and moves a discount generation signal (Discount Generation Signal: dis_gen_sig) which is a confirmation signal through the second wireless communication channel. The communication terminal 3 is provided. This DM has a second radio communication device for establishing a communication channel with the mobile communication terminal 3. Here, the second wireless communication device means communication of a channel different from the mobile communication channel, and includes Bluetooth, Zigbee, Ubiquitous, Infrared, and Radio Frequency Identification. RFID) is an example.

The mobile station (MS) 3 prepares a discount generation message (dis_gen_mes) based on the activation setting signal dis_gen_sig from the discount marker 1 in the discount zone, and uses the discount zone service system. Provided in 17. In addition, the mobile communication terminal 3 provides a discount zone service to the user through an association with the discount zone service system 17. To this end, the mobile communication terminal 3 has a second radio communication device for communication with the DM 1 and a first radio communication device for communication with the mobile communication system. Here, the first wireless communication apparatus uses one of Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FEMA), Space Division Multiple Access (SDMA), and Time Division Multiple Access (TDMA), or a combination thereof. It can work by the method. In addition, the mobile communication terminal 3 forms a first wireless communication channel with the base mobile communication system 4 in order to provide the discount rate application message dis_gen_mes to the discount zone service system 17.

The base mobile communication system (BMCS) 4 provides mobile communication services such as voice and data communication services through the mobile communication terminal 3. In addition, the base mobile communication system 4 receives the discount application message dis_gen_mes from the mobile communication terminal 3 and provides it to the discount zone service system 17. To this end, the base mobile communication system 4 includes a base station transceiver subsystem (BST) 5 that forms a first wireless communication channel directly with the mobile communication terminal 3, and a base station controller for controlling the base station 5. A base station controller (BSC) 6 and a base station controller 6 are provided, and a mobile switching center 7 for connecting another mobile communication terminal or a wired telephone network is provided. The model switching center 7 of the base mobile communication system 4 is connected to the discount zone server 18 of the discount zone system 17.

The discount zone service system 17 registers a discount home base station ID (DHB_ID), which is a base station ID of a region where a discount zone is set, and receives a home base ID (DHB_ID) when receiving a discount rate application message (dis_gen_mes). In addition, by comparing the current base station ID (Current Home Base_ID: CHB_ID), which is the base station ID of the current region where the mobile communication terminal 3 is located, it determines fraudulent use, and provides a discount zone service according to the determination result. To this end, the discount zone service system 17 receives a location information registration system (Location Resister System) 8 that manages a discount home base station ID (DHB_ID) and a current base station ID (CHB_ID), and a discount rate application message (dis_gen_mes). Compares the discount home base station ID (DHB_ID) with the current base station ID (CHB_ID), and uses a discount zone server (Discount Zone Server) 18 to determine the right and wrong of the discount charge application message (dis_gen_mes) and a discount zone service. Subscriber Management System 14, which stores user information and provides user information at the request of discount zone server 18, and discount zone service charges for use according to requests from discount zone server 18. And a billing system 16 for billing and billing. Here, when the discount rate application message (dis_gen_mes) is provided in the form of a short message service (SMS), a service processing system having a short message service center (SMSC) (Service Providing System, 11) This discount zone service system 17 may be included.

FIG. 4 is a diagram showing the configuration of the discount zone service system 17 of FIG. 3 in more detail.

Referring to FIG. 4, the discount zone service system 17 may include a location resister system 8 that manages a discount home base station ID (DHB_ID) and a current base station ID (CHB_ID), and a discount rate application message (dis_gen_mes). A discount zone server 18 that compares the discount home base station ID (DHB_ID) with the current base station ID (CHB_ID) and determines the right or wrong of the discount rate application message (dis_gen_mes), and a discount zone service. The user's information is stored and the subscriber management system 14 provides the user information at the request of the discount zone server 18, and the discount zone of the use according to the request from the discount zone server 18. A billing system 16 for billing and billing service charges is provided.

The location information registration system 8 manages the discount home base station ID (DHB_ID) and the current base station ID (CHB_ID). To this end, the location information registration system 8 includes a home location register (HLR) 10 and a visitor location register (VLR) 9. In this location information registration system 8, an ID (Base Identification) of a base station located nearby where a discount zone is installed is stored as a discount home base station ID (DHB_ID). In this way, the location information registration system 8 generates a discount home base station ID (DHB_ID) and a discount rate application message (dis_gen_mes) in response to a request from the discount zone server 18 that has received the discount rate application message (dis_gen_mes). Provides the current base station ID (CHB_ID) of the mobile communication terminal (3). Here, the discount home base station ID (DHB_ID) of the present invention can be used by modifying the home base station ID (Home Base_ID) determined at the time of initial subscription in the current mobile communication system.

The discount zone server 18 receives the discount rate application message (dis_gen_mes) and transmits the discount home base station ID (DHB_ID) and the current base station ID (CHB_ID) of the mobile communication terminal 3 that has sent the discount rate application message (dis_gen_mes). The position information registration system 8 is requested. The discount zone server 18 compares the discount home base station ID (DHB_ID) and the current base station ID (CHB_ID) provided by the location information registration system 8, so that the discount home base station ID (DHB_ID) and the current base station ID (CHB_ID) are determined. Determine if it is the same. If the discount home base station ID (DHB_ID) and the current base station ID (CHB_ID) are the same, the discount zone server 18 controls the subscriber management system 14 and the billing system 17 to apply the discount rate according to the discount zone service. do.

The subscriber management system 14 stores the information of the user using the discount zone service and provides the user information at the request of the discount zone server 18. For this purpose, the subscriber management system 14 has a subscriber database 13 in which subscriber information is stored.

The billing system 16 setstles and charges a discount zone service fee of use in response to a request from the discount zone server 18. To this end, the billing system 16 includes a billing server for billing and settlement of a fee, and provides a service in connection with the subscriber management system 14.

Further, shown in the lower part of the discount zone service system of FIG. 4 is a short message service center (SMSC) 12, an analog mobile phone system (AMPS, 19), a wired telephone network (Public Switched Telephone Network: PSTN, 20 shows a service processing system 11 as shown in FIG. In particular, when the discount rate application message (dis_gen_mes) is provided to the discount zone server 18 using the short message, the short message service center 12 is also included in the discount zone service system 17.

The discount zone server 18 described above may be implemented using the billing system 15, the subscriber management system 14, the location information registration system 8, or the mobile switching center 7.

5 is a view briefly illustrating a method for preventing illegal use in a discount zone service according to the present invention.

Referring to FIG. 5, the method for preventing abuse in the discount zone service according to the present invention includes setting a discount zone to provide a discount zone service (S10), and a discount home base station that is a base station ID of a region where a discount zone is set. Registering the ID (S20), receiving the confirmation of the discount marker (1) in the discount zone (S30), creating a discount rate application message for the provision of the discount zone service (S40), and the discount Delivering the fee application message to the discount zone service system 17 for providing the discount zone service (S50), the home base ID and the area where the mobile communication terminal 3 is located when the discount fee application message is received; Comparing the current base station ID that is the base station ID of (S60) and providing a discount zone service according to the comparison result (S70).

In step S10, a discount zone for providing a discount zone service is set by the DM. At this time, in the initial registration step, the ID of the base station covering the area where the discount zone is set as in step S20 is registered in the location information registration system (8). That is, the discount home base station ID (DHB_ID) is registered in the location information registration system 8. This procedure only needs to be executed immediately after installation of the DM, immediately after the user subscribes to the discount zone service or makes a change request for reasons such as moving. In particular, when the discount home base station ID DHB_ID is used in place of the home base station ID HB_ID, the discount home base station ID DHB_ID is registered and used in the home location register 9.

When the discount home base station ID (DHB_ID) is registered in the location information registration system 8, in step S30, the user attempts to use the mobile communication service in the set discount zone in order to use the discount zone service. At this time, the DM determines whether the mobile communication terminal 3 of the user can use the discount zone service. If it is determined that it is available, the DM 1 creates a discount setting signal dis_gen_sig and provides it to the mobile communication terminal 3.

The mobile communication terminal 3 receiving the discount setting signal dis_gen_sig creates a discount rate application message dis_gen_mes in step S40. This discount rate application message (dis_gen_mes) describes the contents confirming that the discount zone service is available from the DM (2). Here, the discount rate application message (dis_gen_mes) may be prepared as a short message.

When the preparation of the discount rate application message dis_gen_mes is finished, the mobile communication terminal 3 transmits the discount rate application message dis_gen_mes to the discount zone service system 17 in step S50. When the S50 step is further described in detail, when the preparation of the discount rate application message dis_gen_mes is completed, the mobile communication terminal 3 forms the first wireless communication channel with the base station 5 of the base mobile communication system 4. do. Here, the first wireless communication channel may be formed previously. The mobile communication terminal 3 transmits to the discount zone server 18 via the base station 5, the base station controller 6, and the mobile switching center 7 through the first wireless communication channel having a discount rate application message (dis_gen_mes) formed. send.

When the discount rate application message (dis_gen_mes) is transmitted to the discount zone server 18, the discount zone server 18 transmits the discount home base station ID (DHB_ID) and the mobile communication terminal 3 to the location information registration system 8 in step S60. Request the current base station ID (CHB_ID) is located. The discount zone server 18 compares the discount home base station ID DHB_ID provided by the location information registration system 8 with the current base station ID CHB_ID to determine whether the two IDs are the same. That is, if the discount home base station ID (DHB_ID) and the current base station ID (CHB_ID) are the same, the discount zone server 18 determines that there is no illegal use, and the discount home base station ID (DHB_ID) and the current base station ID (CHB_ID) If it is not the same, it is determined that abuse has occurred, and then proceed with the subsequent process according to the procedure at the time of abuse.

In operation S70, when it is determined that no abuse occurs, the discount zone server 18 notifies the subscriber management system 14 and the billing system 15 to apply the discount zone service charge to the call rate of the user. .

On the other hand, the fraud prevention method according to the present invention may implement the role of the discount zone server using a home location register, a visitor location register, subscriber management system, billing system or a mobile switching center. In this case, since there is no significant difference from the above-described illegal use prevention method, a detailed description thereof will be omitted.

In addition, the comparison between the discount home base station ID and the current base station ID is possible in the mobile terminal and the DM, but this is not preferable because of the disadvantages of increased call delay time and traffic of the system.

As described above, the mobile communication system for providing a discount zone service capable of preventing illegal use and the illegal use prevention method according to the present invention propose a mobile communication system and a service providing method having a discount marker for providing a discount zone service. By doing so, it is possible to prevent illegal use.

In addition, the mobile communication system and the illegal use prevention method for providing a discount zone service that can prevent fraudulent use according to the present invention is classified into a base mobile communication system and a discount zone service system, the fraudulent use of discount zone services It is possible to judge and cope with it.

In addition, the mobile communication system and the illegal use prevention method for providing a discount zone service that can prevent fraudulent use according to the present invention provides a specific configuration, role and service provision method of the discount zone service system for providing a discount zone service. By presenting, the illegal use of discount zone service can be prevented.

In addition, the mobile communication system for providing a discount zone service that can prevent fraudulent use and the fraud prevention method according to the present invention propose a method of using a discount home base station and the current base station ID to prevent fraudulent use, discount home base station By presenting a method of setting the ID and the current base station ID in the mobile communication system, it is possible to easily prevent fraudulent use of the discount zone service.

Claims (13)

A discount marker for setting a discount zone to provide a discount zone service for discounting a call rate; A mobile communication terminal for creating a discount rate application message for providing a discount zone service by confirming the discount marker in the discount zone; A base mobile communication system for delivering a discount rate application message to a discount zone service system for providing a discount zone service; The home base station ID, which is the base station ID of the region where the discount zone is set, is registered. When receiving the discount rate application message, the base station ID is compared with the discount home base station ID and the current base station ID, which is the base station ID of the region where the mobile communication terminal is located. And a discount zone service system for determining whether to provide a discount zone service according to the determination result. The method of claim 1, And a base mobile communication system for relaying communication between the discount zone service system and the mobile communication terminal. The method of claim 1, The discount zone service system A location information registration system for storing and managing a discount home base station ID and a current base station ID; A discount zone server that receives a discount rate application message, compares the discount home base station ID with the current base station ID, and determines whether to apply the discount rate; A subscriber management system that stores information of a user using a discount zone service and provides user information at the request of a discount zone server; And a billing system for calculating and charging a discount zone service fee used in response to a request from a discount zone server. The method of claim 3, wherein The location information registration system A home location register which stores a home base station ID which is a base station ID at the time of initial subscription of the mobile communication terminal; And a visitor location register which stores an ID of a base station communicating with the mobile communication terminal after registration. The method of claim 4, wherein And wherein the home base station ID is changed to the discount home base station ID when the user subscribes to the discount zone service. The method according to claim 2 or 3, The base mobile communication system A base station, a base station controller and a mobile switching center, And the home zone server is the mobile switching center. The method of claim 3, wherein The home zone server And at least one of the location registration system, the billing system, and the subscriber management system is in charge of the mobile communication system. In the service providing method through a mobile communication system having a discount marker for setting a discount zone for providing a discounted rate in a mobile communication service, and a mobile communication terminal for providing the mobile communication service to a user, Establishing a discount zone to provide a discount zone service; Registering a discount home base station ID which is a base station ID of a region where a discount zone is set; Receiving, by the mobile terminal, confirmation of a discount marker in the discount zone; Creating a discount rate application message for providing a discount zone service; Delivering a discount rate application message to a discount zone service system for providing a discount zone service; Comparing the discount home base station ID with a current base station ID which is a base station ID of a region in which the mobile communication terminal is located when the discount rate application message is received; And determining whether to provide a discount zone service according to the comparison result. The method of claim 8, Registering the discount home base station ID is It is executed only when the user first subscribes to the discount zone service. The method of claim 8, Receiving confirmation of the discount marker And receiving, by the mobile communication terminal, a discount setting signal generated from the discount marker when the mobile communication terminal is in the discount zone. The method of claim 8, The discount rate application message is written as a short message, characterized in that transmitted by a short message service, prevention method of illegal use of the discount zone service. The method of claim 8, The delivering step of the discount rate application message is Establishing a communication channel with a base mobile communication system of the mobile communication system to deliver the discount rate application message; And transmitting the discount rate application message to the discount zone service system by the base mobile communication system. The method of claim 8, Comparing the discount home base station ID and the current base station ID, Requesting, by the discount zone server, the discount home base station ID and the current base station ID from the location information registration system; And determining whether the discount home base station ID is equal to the current base station ID.

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