KR100578344B1 - Method and system for preventing tapping by illegal copying mobile phone - Google Patents

Abstract

The present invention transmits a call message to one or more called terminals in response to a call setup request from a calling terminal, receives a first call response message from a first called terminal in response to a call message, and then receives a second called terminal. Receiving the second call response message from the first call response message, extracting the first message sequence value from the first call response message, extracting the second message sequence value from the second call response message, and then the first message sequence value and the second message sequence. The present invention relates to a method and a system for preventing eavesdropping by an illegal copy terminal that transmits a discontinuation message to a first destination terminal and a second destination terminal when the values are different by comparing the values. Intercepts the call before the ring rings, preventing eavesdropping or eavesdropping by the replicating terminal. The.

Eavesdropping, replication terminals, base stations, eavesdropping,

Description

Method and system for prevention of eavesdropping by illegal copy terminal {METHOD AND SYSTEM FOR PREVENTING TAPPING BY ILLEGAL COPYING MOBILE PHONE}             

1 is a data flow diagram illustrating a method for suppressing eavesdropping of a duplicate terminal according to the prior art.

2 is a data flow diagram illustrating a method for preventing eavesdropping by an illegal copy terminal according to an exemplary embodiment of the present invention.

3A to 3C are views illustrating a display screen of a discontinuation message provided when a counterfeit terminal is found according to an exemplary embodiment of the present invention.

4 is a data flow diagram illustrating a method for preventing eavesdropping by an illegal copying terminal according to another exemplary embodiment of the present invention.

5A and 5B are exemplary diagrams of a screen display when a notification message provided when a counterfeit terminal is found according to another exemplary embodiment of the present invention is displayed.

<Description of Symbols for Main Parts of Drawings>

110: incoming exchange

120: base station

130: original terminal

140: duplicate terminal

The present invention relates to a method and a system for preventing eavesdropping by an illegal copying terminal, and in particular, when the presence of the illegal copying terminal is detected, the eavesdropping prevention by the illegal copying terminal enables prompt action by notifying a normal subscriber in real time. It relates to a method and a system.

In a mobile communication service system using a code division multiple access (CDMA) scheme, a coded spread is spread using an electric serial number (ESN), which is a password uniquely assigned to each terminal when a mobile communication terminal is manufactured. Apply the method. Therefore, even if a radio wave reception device is used to receive the radio wave signal in the air, the received signal cannot be converted back into voice, and thus it is relatively free of eavesdropping compared to other mobile communication service systems other than the encoding spreading method.

However, recently, it has been a problem to find a phone number and ESN of another person's mobile phone and use the same to duplicate a mobile communication terminal having the same information. In this case, not only the communication fee due to the use of the duplicated mobile communication terminal is charged to the normal subscriber but also a problem that the user of the duplicated mobile communication terminal can eavesdrop or listen to the contents of the call of the normal subscriber. In other words, when using a mobile communication terminal (hereinafter, referred to as a "replica terminal") that illegally duplicates an ESN, a unique password of a mobile communication terminal, the ESN, which is the basis of the CDMA code spreading method, is the same. And the caller's voice can be received and listened simultaneously with the mobile subscriber's mobile communication terminal (hereinafter referred to as the "original terminal").

Therefore, there is a need for a method for preventing eavesdropping when an eavesdropping is attempted in a simultaneous call with the original terminal using a duplicate terminal.

Hereinafter, a wiretap suppression method of a duplicate terminal according to the related art will be briefly described with reference to related drawings.

1 is a data flow diagram illustrating a method for suppressing eavesdropping of a duplicate terminal according to the prior art.

Referring to FIG. 1, when a call setup request is received from an originating terminal (not shown), the destination exchange 110 transmits a page message to the base station 120 in step 140.

The base station 120 transmits the page message to the original terminal 130 and the duplicated terminal 140 through the wireless communication network in step 145.

In step 150 and step 155, the original terminal 130 and the duplicated terminal 140 transmits a page response message to the base station 120 through the wireless communication network.

The base station 120 receiving the page response message transmits an Extended Channel Assignment Message (ECAM) to the source terminal 130 and the replica terminal 140 through the wireless communication network in step 160. . The original terminal 130 and the duplicated terminal 140 enter the traffic channel by the extended channel assignment message (ECAM), and from this time, the base station 120 starts to send null traffic to the corresponding Walsh code. The original terminal 130 and the duplicated terminal 140 start to transmit a preamble in the traffic state with the traffic channel information included in the extended channel assignment message (ECAM). The base station 120 responds with a base station response (ACK) from the preamble of the source terminal 130 and the replica terminal 140. From this time, the source terminal 130 and the replica terminal 140 transmit null traffic, Be prepared to send / receive traffic.

In step 165, the base station 120 transmits an Alert With Information (AWI) message to the original terminal 130 and the duplicated terminal 140 so that a ring rings at the original terminal 130 and the duplicated terminal 140. .

In operation 170, when the called subscriber of the original terminal 130 transmits an incoming response (that is, a call request or a connect order) to the base station 120, the base station 120 transmits the calling terminal and the original terminal 130 through step 175. Set up a call path between the two subscribers so that a telephone call can be made between both subscribers.

Subsequently, in a state in which a ring rings for an illegal user of the duplicate terminal 140 to eavesdrop or intercept the contents of the telephone call of the original terminal 130, an incoming response (that is, a call request) is transmitted to the base station (step 180). In step 120, the base station 120 recognizes that the incoming response is simultaneously received from the two mobile communication terminals, and releases all of the calls connected to the original terminal 130 and the replica terminal 140 through step 185. In addition, the base station 120 transmits a call release request to the destination exchange 110 in step 190.

As described above, in the conventional method of suppressing eavesdropping of the duplicated terminal, after a telephone call is made between the original terminal 130 (or the duplicated terminal 140) and the calling terminal, the duplicated terminal 140 (or the original terminal 130) is again present. In the case where an incoming response is received (ie, duplicated reception), it is determined that there is a duplicate terminal, and thus all calls are released to prevent eavesdropping or eavesdropping using the duplicated terminal 140.

However, in the conventional method of suppressing eavesdropping by the duplicated terminal, the eavesdropping can be prevented when the original terminal 130 and the duplicated terminal 140 are simultaneously in a call state, but a ringing occurs at the same time when the incoming call is attempted. There was a problem that continued to occur.

Therefore, the method of suppressing eavesdropping by the duplicated terminal according to the related art has a problem that some simultaneous calls may be possible depending on the point of time at which the original terminal 130 and the duplicated terminal 140 attempt to make a call.

In addition, the method of suppressing eavesdropping by the duplicated terminal according to the related art is a method of blocking eavesdropping after the communication path between the original terminal 130 and the duplicated terminal 140 is opened, and the incoming response of the duplicated terminal 140 is prevented. When (Connect Order) was lost due to a network error, there was a problem that a wiretap could be made through an open channel.

In addition, the method of suppressing eavesdropping by the duplicated terminal according to the related art has a problem in that in some cases, although eavesdropping is possible, duplication of use of additional services such as text message transmission and reception cannot be prevented.

Therefore, the present invention has been made to solve the above-described problems, if there is a duplicate terminal in the incoming attempt attempt to block itself before the ring (ring) in the call to block the eavesdropping or eavesdropping by the duplicate terminal The present invention provides a method and a system for preventing eavesdropping by an illegal copy terminal.

Another object of the present invention is to prevent eavesdropping by blocking the call itself to provide a method and system for preventing eavesdropping by an illegal copying terminal, which can be more effectively prevented eavesdropping when used in combination with a conventional eavesdropping suppression method. It is for.

It is another object of the present invention to notify the original subscriber that there is a duplicate terminal when the existence of the duplicate terminal is recognized, thereby allowing for countermeasures (e.g., preparation for eavesdropping or interception, detection of duplicate terminals, etc.). It is to provide a method and system for preventing eavesdropping.

It is still another object of the present invention to provide a method and system for preventing eavesdropping by an illegal copying terminal that enables an illegal user of a copying terminal to have a psychological burden on the use of the copying terminal, thereby suppressing the use of the copying terminal.                         

Still another object of the present invention is to provide a method and system for preventing eavesdropping by an illegal copying terminal capable of preventing the contents of a message from being disclosed by an illegal user of a copying terminal receiving a text message to be received by a normal subscriber of the original terminal. will be.

In order to achieve the above objects, according to an aspect of the present invention, in the method for preventing eavesdropping by the replica terminal in the base station, a call message to one or more destination terminals in response to a call setup request from the calling terminal (Page) Message), receiving a first page response message (Page Response Message) from the first destination terminal in response to the page message (Page Message), the first message included in the first call response message Extracting a sequence value, receiving a page response message from a second called terminal in response to the page message, and a second message included in the second call response message Extracting a sequence value, comparing the first message sequence value with the second message sequence value, and comparing the result with the result; A method for preventing eavesdropping by an illegal copy terminal is provided, and the method for preventing eavesdropping by an illegal copy terminal is provided. A system, apparatus, and record carrier are provided for the purpose of this.

In addition, when the result of the determination of duplication using the comparison result is inconsistent with the first message sequence value and the second message sequence value, a usage stop message is transmitted to the first destination terminal and the second destination terminal. The call release request may be transmitted to the exchange.

The use stop message may include a notification message and a lock order. In addition, if the deactivation message further includes a report request message, receiving a report message corresponding to the report request message from any one of the destination terminal and transmitting the report message to the report center through a communication network; It may further include.

In addition, the method for preventing eavesdropping by the counterfeit terminal according to the present invention comprises the steps of receiving processing result information corresponding to the report message from the report center and transmitting the processing result information to the first destination terminal and the first terminal through a wireless communication network. The method may further include transmitting to a destination terminal.

The message sequence value may change when a call is attempted or when a location is registered. The eavesdropping prevention method may be used in parallel with a method of releasing a call when a plurality of call orders are received.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a data flow diagram illustrating a method for preventing eavesdropping by an illegal copying terminal according to an exemplary embodiment of the present invention, and FIGS. 3A to 3C are suspensions of use provided when discovering an illegal copying terminal according to an exemplary embodiment of the present invention. A diagram illustrating a display screen of a message.

Referring to FIG. 2, in step 210, the base station 120 receives a page message according to a request of an originating terminal from the destination exchange 110.

In step 215, the base station 120 transmits a page message to the original terminal 130 and the replica terminal 140.

The base station 120 receives a first page response message (Page Response Message) from any first terminal (i.e., the source terminal 130 or the replica terminal 140) in step 220, and proceeds to step 223. Extract a first message sequence value included in a page response message. The page response message of the mobile communication terminal in response to the incoming request signal (ie, the call message) at the base station 120 includes a message sequence that uniquely recognizes the message.

In step 225, the base station 120 transmits the second call response message (page message) corresponding to the page message transmitted through the step 215 from any second terminal (that is, the duplicate terminal 140 or the original terminal 130). Page Response Message) is received or not.

If the second call response message is not received, the flow proceeds to step 228 so that a call path is established between the first terminal and the calling terminal that transmitted the call response message. That is, the first terminal is recognized as the original terminal, and an Extended Channel Assignment Message (ECAM) is transmitted to the first terminal through the wireless communication network. The first terminal enters the traffic channel by the Extended Channel Assignment Message (ECAM), and from this time, the base station 120 starts to send null traffic to the corresponding Walsh code. The first terminal starts to transmit a preamble in a traffic state with traffic channel information included in an extended channel assignment message (ECAM). The base station 120 responds with a base station response (ACK) to the preamble of the first terminal. From this time, the first terminal transmits null traffic and prepares to transmit / receive actual traffic. In addition, the base station 120 transmits an Alert With Information (AWI) message to the first terminal so that the ring rings at the first terminal. Thereafter, when the called subscriber of the first terminal transmits an incoming response (that is, a call request, a connect order) to the base station 120, the base station 120 sets up a call path between the first terminal and the calling terminal to make a telephone call between both subscribers. To be done.

However, when the second call response message is received, the base station 120 receives the second message in the second call response message received from the second terminal (ie, the duplicate terminal 140 or the original terminal 130) in step 230. Extract the sequence value.

In step 235, the base station 120 determines whether the first message sequence value extracted in step 223 and the second message sequence value extracted in step 230 are inconsistent. The message sequence included in the page response message has any one value from 0 to 7, and is incremented by 1 when attempting a call or registering a location. Of course, according to the change of the communication protocol, the message sequence configuration form or increase value may be configured in various ways, and the present invention is not limited thereto. Therefore, even if the terminal duplicated the ESN, the message sequence is often different. For example, even if the message sequence values of the original terminal 130 and the replica terminal 140 coincide with each other, the original terminal 130 when the normal subscriber of the original terminal 130 attempts to make a phone call to another mobile communication subscriber. And the message sequence value of the duplicated terminal 140 will be different. This is because the duplicate terminal 140 is mainly used for the reception of eavesdropping or eavesdropping, rather than the purpose of a telephone call.

If the first message sequence value and the second message sequence value match, it is recognized as a communication network error or the like, and it is determined that the duplicated terminal detection operation is temporarily suspended, and the flow proceeds to step 228 to perform a call setup process. Of course, when two call response messages are received in response to one call message, it is natural that the step may be immediately terminated without performing the call setup process.

 If the first message sequence value and the second message sequence value do not match, the base station 120 proceeds to step 240 and transmits a usage stop message to the first terminal and the second terminal. The stop message may include a feature notification and a stop order. The case where the stop message is displayed on the mobile terminal display is illustrated in FIGS. 3A to 3C.

As illustrated in FIG. 3A, register and use the display unit of the original terminal 130 and the replica terminal 140. After the notification message that is terminated after 3 seconds is displayed, the original terminal 130 and the duplicated terminal 140 may perform a self-locking function according to the stop command. As a method of releasing the self-locking function, the mobile terminal may be rebooted or a dealer or a service center may be requested to release the locking function. When the lock function is released from the dealer or the service center, there is an effect that the normal use of the duplicate terminal 140 can be suppressed to the illegal user of the duplicate terminal 140.

In addition, as illustrated in FIG. 3B, a duplicate phone detection warning on the display unit of the original terminal 130 and the duplicate terminal 140. Report destination: after the notification message 016-114 is displayed, the original terminal 130 and the duplicated terminal 140 may perform a self-locking function according to the stop command. Using the report destination information, the normal subscriber of the original terminal 130 may prevent the additional damage by reporting the existence of the duplicate terminal 140 to the mobile communication service provider or the police. Of course, the illegal user of the duplicate terminal 140 also has a psychological burden on the subsequent use of the duplicate terminal 140.

In addition, as illustrated in FIG. 3C, a duplicate phone detection warning on the display unit of the original terminal 130 and the duplicate terminal 140. Duplicate phone is located at the intersection of Gangnam Station. After a notification message is displayed, the original terminal 130 and the duplicated terminal 140 may perform a self-locking function according to a stop command. The location information of the mobile communication terminal displayed on the display unit is the location information of the other party, and the illegal user of the replication terminal 140 has a psychological burden on the use of the replication terminal 140 because his location information is exposed. There is.

Then, in step 245, the base station 120 transmits a call release request to the destination exchange 110.

4 is a data flow diagram illustrating a method for preventing eavesdropping by an illegal copying terminal according to another exemplary embodiment of the present invention, and FIGS. 5A and 5B are notification messages provided when the illegal copying terminal is found according to another exemplary embodiment of the present invention. Is an exemplary view of the screen display when is displayed.

In the following description of a method for preventing eavesdropping by an illegal copying terminal according to another exemplary embodiment of the present invention, when a plurality of mismatched message sequence values are received, a method of transmitting a suspension message to a user terminal may be described above. Similar to the matter described with reference to FIG. 2. Therefore, description of overlapping matters is omitted.

Referring to FIG. 4, in step 240, the base station 120 transmits a usage stop message to the original terminal 130 and the duplicated terminal 140. The stop message may include a feature notification, a report request message, and a stop order. If the report request message is received in both the original terminal 130 and the replica terminal 140, since the user performing the report will be a normal subscriber of the original terminal 130, the following will focus on the operation performed in the original terminal 130 Explain.

In step 410, the original terminal 130 receives the use stop message from the base station 120, and displays a notification message and the like on the display. An exemplary diagram of screen display when a notification message or the like is displayed on the display unit is shown in FIG. 5A.

Referring to FIG. 5A, the use stop message received from the base station 120 and displayed on the display unit may include a notification message 510, a report button 520, and a cancel button 530. The report button 520 and the cancel button 530 are respectively associated with a key button (for example, a numeric button) of the mobile communication terminal so that the user can select a desired function button by pressing a specific button.

Referring back to FIG. 4, in step 415, the original terminal 130 determines whether a report request is input from a normal subscriber. The normal subscriber may input a report request by selecting a key button associated with the report button 520.

If a report request is input, the flow proceeds to step 420 to generate a predefined report message. The report message may include a report request content (for example, a duplicate terminal investigation request), reporter information (for example, a phone number), and the like.

In operation 430, the original terminal 130 transmits the report message to the base station 120 through the wireless communication network.

The base station 120 receives the report message from the original terminal 130 in step 430, and transmits the received report message to the report center. In order for the base station 120 to recognize that the message is a report message, the report message may include a predetermined code or command, and the base station 120 transmits the report message to a report center through a mobile communication service system internal network or wireless Internet. Can be sent to.

In step 435, the base station 120 receives the report message processing result from the notification center and transmits the processing result to the original terminal 130 through the wireless communication network.

The original terminal 130 receives the processing result from the base station 120 and displays the received processing result on the display unit of the original terminal 130. An exemplary view of the screen display when the processing result is displayed on the display unit of the original terminal 130 is shown in FIG. 5B. As shown in Fig. 5B, the processing result is, for example, duplicate phone report completion. Duplicate phone terminals are constantly monitored and may include a message stating that they may be subject to legal penalties.

In addition, if the processing result transmitted through step 435 is transmitted and displayed not only to the original terminal 130 but also to the duplicate terminal 140, an illegal user of the duplicate terminal 140 bears a mental burden on the use of the duplicate terminal 140. It also has the effect of having.

In addition, although not shown in FIG. 4, the mobile terminal having transmitted the report message from the base station 120 may be recognized as the original terminal 130, and a call may be established between the original terminal 130 and the originating terminal. It may include. In this case, step 245 may be omitted.

In the description of the method for preventing eavesdropping according to the present invention, the method has been described based on a method of blocking a corresponding call before a ring rings in a plurality of terminals at the same time. In addition, if the same concept is used, the content of the short message is disclosed to the illegal user by restricting the short message transmission if the message sequence values received from the plurality of terminals do not match before the short message is transmitted to the subscriber terminal through the communication network. It can also be prevented.

 The method and system for preventing eavesdropping by an illegal copying terminal according to the present invention may block the eavesdropping or eavesdropping by the copying terminal by blocking a corresponding call before a ring occurs during an incoming call attempt when a copying terminal exists. .

In addition, the present invention is to prevent the eavesdropping by blocking the call itself, when used in combination with the conventional eavesdropping suppression method can achieve a more reliable anti-tapping effect.

In addition, when the presence of the duplicated terminal is recognized, the present invention informs the original subscriber that there is a duplicated terminal, so that quick measures (for example, preparation for eavesdropping or interception, search for duplicated terminals, etc.) are possible.

In addition, the present invention allows the illegal user of the duplicated terminal to have a psychological burden on the use of the duplicated terminal to suppress the use of the duplicated terminal by itself.

In addition, the present invention can prevent the contents of the message from being disclosed by the illegal user of the duplicate terminal together with the text message to be received by the normal subscriber of the original terminal.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims (8)

In the method for preventing eavesdropping by the replica terminal in the base station, Transmitting a page message to at least one called terminal in response to a call setting request from the calling terminal; Receiving a page response message from a first called terminal in response to the page message; Extracting a first message sequence value included in the first call response message; Receiving a page response message from a second called terminal in response to the page message; Extracting a second message sequence value included in the second call response message; Comparing the first message sequence value with the second message sequence value; And Determining whether to replicate between the first called terminal and the second called terminal by using the comparison result; Eavesdropping prevention method by an illegal copy terminal, characterized in that it comprises a. The method of claim 1, If the duplicate message determination result using the comparison result is inconsistent with the first message sequence value and the second message sequence value, the discontinuity message is transmitted to the first destination terminal and the second destination terminal. Sending a call release request Eavesdropping prevention method by an illegal copy terminal, characterized in that. The method of claim 2, The disabling message includes a notification message and a lock order. Eavesdropping prevention method by an illegal copy terminal, characterized in that. The method of claim 3, If the disable message further includes a report request message, Receiving a report message corresponding to the report request message from one destination terminal; And Transmitting the report message to a report center through a communication network; Eavesdropping prevention method according to the piracy terminal further comprising a. The method of claim 4, wherein Receiving processing result information corresponding to the report message from the report center; And Transmitting the processing result information to the first destination terminal and the second destination terminal through a wireless communication network. Eavesdropping prevention method according to the piracy terminal further comprising a. The method of claim 1, The message sequence value changes when a call is attempted or when a location is registered. Eavesdropping prevention method by an illegal copy terminal, characterized in that. The method of claim 1, The method for preventing eavesdropping is used in parallel with a method for releasing a call when a plurality of call orders are received. Eavesdropping prevention method by an illegal copy terminal, characterized in that. In the system for preventing eavesdropping by the duplicate terminal, Means for sending a page message to at least one called terminal in response to a call setup request from the calling terminal; Means for receiving a first page response message from a first called terminal and receiving a second page response message from a second called terminal; Means for extracting a first message sequence value included in the first call response message and extracting a second message sequence value included in the second call response message; Means for comparing the first message sequence value with the second message sequence value; And Means for determining whether to replicate between the first called terminal and the second called terminal by using the comparison result The wiretap prevention system by an illegal copy terminal, characterized in that it comprises a.

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