KR101024281B1 - Method and system breaking spam calling - Google Patents

Abstract

Disclosed are a method and a system for blocking spam calls. A system for controlling a communication call requested from an originating terminal includes: an intelligent network peripheral device configured to transmit a guide message to an originating terminal, collect and transmit response information corresponding to the announcement message from the originating terminal; A home location register for storing subscriber registration information; In accordance with the communication call requested from the calling terminal, service registration information about the called terminal is obtained from the home location register. The service registration information is generated and transmitted when the called terminal is registered in the anti-spam service while roaming. A gateway exchanger; And a call control device that receives the response information by controlling the intelligent network peripheral device according to the service start request message, and determines whether the communication call is a spam call using the response information and the set response confirmation information. According to the present invention, spam calls to outbound roaming terminals can be blocked.

Roaming, spam

Description

Method and system breaking spam calling}

The present invention relates to mobile communications, and more particularly, to a method and system for blocking spam calls to outbound roaming terminals.

In the case of a domestic network, even if a terminal receives a call, the terminal does not charge. However, when the terminal is roaming abroad, the international call section is used, so that the charging occurs even when the terminal receives the call.

At present, there are a great many spam calls that use a fixed line telephone number and a mobile telephone number as a calling number. In order to block such spam calls, various techniques have been commercially available.

For example, after storing a number pattern presumed to be a spam number in a mobile communication network, if a call corresponding to a similar pattern is received, the call may be blocked.

For example, a specific number may be set as a spam number in response to a request of a terminal user in a mobile communication network, and then a transmission by a specific number set as a spam number may be blocked.

However, according to the related art, an incoming call to an outbound roaming terminal may be blocked even though it is not a spam call because it is mistaken as a spam call because the calling number is distorted due to roaming characteristics.

In addition, according to the related art, as the international telephone section and the mobile communication network are operated separately, a problem that the mobile communication network does not block the spam call despite the spam call occurs very frequently.

The present invention is to provide a method and system that can block spam calls to outbound roaming terminals.

In addition, the present invention is to provide a method and system that can block the spam call so that the billing does not occur according to the spam call connection.

According to an aspect of the present invention, a system for blocking a communication call requested from an originating terminal to an outbound roaming terminal is a spam call.

According to an embodiment of the present invention, in a system for controlling a communication call requested from a calling terminal, an intelligent network for transmitting a guide message to the calling terminal, collecting and transmitting response information corresponding to the guide message from the calling terminal; Peripheral device; A home location register for storing subscriber registration information; In response to the communication call requested from the calling terminal, service registration information for the called terminal is obtained from the home location register, and analyzed. When the called terminal is registered with the anti-spam service while roaming, a service start request message is received. A gateway exchange generating and transmitting; And a call control device configured to control the intelligent network peripheral device according to the service start request message to receive the response information, and determine whether the communication call is a spam call using the response information and the set response confirmation information. A control system can be provided.

By providing a method and system for blocking spam calls according to the present invention, there is an effect that can block spam calls to outbound roaming terminals.

As a result, there is an advantage that unnecessary billing due to the incoming spam call to the outbound roaming terminal does not occur.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

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

1 is a block diagram schematically illustrating a configuration of a mobile communication system according to an embodiment of the present invention.

Referring to FIG. 1, a mobile communication system according to an embodiment of the present invention includes a first communication network and a second communication network. In the present specification, it will be described on the assumption that the first communication network is its own communication network and the second communication network is an overseas third party network.

However, the above-described assumption is only a limitation for describing an embodiment of the present invention, and when the first communication network is a domestic network and the second communication network is an overseas network, the present invention may be applied regardless of a company or a third party. It is apparent to those skilled in the art in view of the technical spirit of the invention.

The first communication network includes a gateway mobile switching center (GMSC) 110, a call control device (SCP) 120, an intelligent network peripheral ( IP: intelligent peripheral, hereinafter referred to as IP) 130, and a home location register (HLR: home location register, hereinafter referred to as HLR) 140.

GMSC 110 is another form of mobile switching center (MSC), and performs a gateway function between two networks. Since general functions of the exchange are obvious to those skilled in the art, a separate description thereof will be omitted.

In addition, when the GMSC 110 requests an incoming call from the calling terminal 150 to the called terminal 160, the GMSC 110 requests the service registration information from the HLR 140. In addition, the GMSC 110 analyzes service registration information obtained from the HLR 140 to determine whether the called terminal 160 is registered with the spam blocking service while roaming.

If the terminating terminal 160 is registered with the spam blocking service while roaming, the GMSC 110 generates a service initiation request message and transmits it to the SCP 120. Here, the service start request message is a control message for requesting the start of the spam blocking service.

More specifically, when an incoming call from the originating terminal 150 to the called terminal 160 is requested, the GMSC 110 generates a transmission routing message (MAP SRI) and transmits it to the HLR 140. Here, the transmission routing message includes source information (eg, identification information of the originating terminal) and destination information (eg, identification information of the called terminal). Identification information of the called terminal and the calling terminal may be, for example, a mobile identification number (MIN), an electronic serial number (ESN).

In addition, the GMSC 110 receives a transport routing response message from the HLR 140 and extracts service registration information from the transport routing response message. The GMSC 110 analyzes the extracted service registration information to determine whether the called terminal 160 has registered with the spam blocking service while roaming. If the terminating terminal 160 is registered with the spam blocking service while roaming, the GMSC 110 may generate a service initiation request message (CAP_IDP (initial detection point)) and transmit it to the SCP 120. Here, The service start request message includes caller information and callee information.

SCP 120 is a device for managing intelligent network service subscribers and performing service logic. For this purpose, the SCP 120 manages the profiles of the intelligent network service subscribers and / or related databases. The SCP 120 also controls the IP 130 to send a prompt message (eg, voice, text, etc.) to the intelligent network service subscriber or / and caller.

In addition, the SCP 120 performs a function of providing a spam blocking service by driving a spam blocking service according to the blocking information set corresponding to the called terminal 160. That is, the SCP 120 performs a function of providing a spam blocking service in association with the IP 130 in response to the service start request message received from the GMSC 110.

More specifically, when the service start request message is received from the GMSC 110, the SCP 120 extracts the blocking information set corresponding to the called terminal 160 and generates a control message including the blocking information to generate an IP ( 130). Here, the blocking information may be query guide information or query guide pattern information set by the called terminal 160.

In addition, the SCP 120 determines whether the communication call (that is, the incoming call) requested from the originating terminal 150 is a spam call using the response information received from the IP 130 and the predetermined response confirmation information. That is, if the response information and the response confirmation information do not match, the SCP 120 recognizes that the requested incoming call is a spam call and controls to terminate the incoming call. Here, the response confirmation information is confirmation information set by the called terminal 160 in correspondence with the blocking information.

The method for blocking spam calls in SCP 120 will be described in more detail with reference to the accompanying drawings below.

The IP 130 provides various guide messages required for the intelligent network service. That is, the IP 130 is interworked with the SCP 120, transmits a guide message under the control of the SCP 120 to the calling terminal 150, and sends response information corresponding to the guide message from the calling terminal 150. Collect and send to SCP 120.

For example, when the control message is received from the SCP 120, the IP 130 extracts the blocking information included in the control message and transmits a guide message corresponding to the blocking information to the calling terminal 150. Then, response information corresponding to the guide message is collected from the calling terminal 150 and transmitted to the SCP 120. If response information is not collected from the calling terminal 150 for a predetermined time, the IP 130 may generate unresponsive information as response information and transmit it to the SCP 120.

The HLR 140 stores various information about the subscriber and manages the location for the mobile communication terminal. The HLR 140 also stores roaming information and service registration information for each subscriber.

That is, the HLR 140 includes subscription information (CSI: CAMEL subscription information, CSI) for the corresponding service in the subscriber profile according to which service the intelligent network subscriber subscribes to.

For example, CSI information is registered differently in the subscriber profile according to whether the subscribed intelligent network service is an outgoing service (O-CSI), an incoming service (T-CSI), or a short message related service (SMS-CSI). Added). The HLR 140 stores CSI information for each subscriber and then transmits the corresponding information according to the request of the GMSC 110 so that the called terminal 160 can receive the subscribed intelligent network service.

For example, when the routing information message is received from the GMSC 110, the HLR 140 extracts roaming information corresponding to the called terminal 160 to determine whether the called terminal 160 is in a roaming state. If the roaming state, the HLR 140 extracts the spam blocking service registration information while the called terminal 160 is roaming, and transmits it to the GMSC 110 by including it in the transmission routing response message as the service registration information.

The second communication network is an overseas communication network in which the outbound roaming terminal roams, and provides a roaming service to the outbound roaming terminal.

The calling terminal 150 and the called terminal 160 are terminals connected to a communication network to perform incoming and outgoing functions of voice calls. For example, the calling terminal 150 and the called terminal 160 may be a cellular phone, a personal communication service (PCS) phone, a PDA phone, a GSM phone, a WCDMA phone, a CDMA-2000 phone, a DMB phone, or the like.

Hereinafter, it will be described on the assumption that the called terminal 160 is an outbound roaming terminal.

2 is a block diagram showing an internal configuration of a call control device according to an embodiment of the present invention. Referring to FIG. 2, the call control device 120 according to the embodiment of the present invention includes a communication unit 210, an information acquisition unit 220, a storage unit 230, and a service control unit 240.

The communication unit 210 performs a function of transmitting and receiving data with other devices (eg, the HLR 140, the GMSC 110, the IP 130, etc.) of the mobile communication system through a communication network.

For example, the communication unit 210 receives a service start request message from the GMSC 110 and outputs it to the service control unit 240.

For example, the communication unit 210 performs a function of transmitting a control message according to the control of the information obtaining unit 220 to the IP 130.

The information obtaining unit 220 extracts blocking information set corresponding to the called terminal 160 from the storage unit 230 under the control of the service control unit 240. The information acquisition unit 220 interlocks with the IP 130 in response to the blocking information, obtains response information corresponding to the blocking information, and outputs the response information to the service control unit 240.

For example, the information acquisition unit 220 generates a control message corresponding to the blocking information and transmits the control message to the IP 130, and receives the response information corresponding to the blocking information from the IP 130 to the service control unit 240. You can print

Here, the response information may be a combination of one or more letters, one or more numbers, and one or more special symbols. That is, the response information may be obtained differently corresponding to the guide message previously designated by the subscriber of the called terminal 160. The announcement message may be provided in the form of voice or text. In the present specification, for convenience of understanding and explanation, it will be described on the assumption that the guide message is provided to the calling terminal 150 in the form of voice.

For example, when the guidance message is designated as "Please enter a password", the password input by the calling terminal 150 is obtained as the response information.

In addition, when the guidance message is designated as "Enter the name of the sender", the name is obtained as the response information.

If the response information is not acquired for a predetermined time, the information acquisition unit 220 generates the unresponsive information as the response information and outputs the response information to the service controller 240. Spam calls are typically sent by spam servers that send spam calls uniformly. That is, the spam server correctly understands the guidance message designated by the called terminal 160, and cannot input input information about it. Therefore, in case of a general spam call, response information is not obtained.

The storage unit 230 stores an algorithm for operating the call control device 120 according to an embodiment of the present invention, blocking information set according to the called terminal 160, response confirmation information corresponding to the blocking information, and the like.

The service controller 240 determines whether the incoming call is blocked by using the response information input from the information acquirer 220 and the response confirmation information set corresponding to the called terminal 160.

That is, if the response information and the response confirmation information do not match, the service controller 240 recognizes that the incoming call requested by the calling terminal 150 is a spam call and controls the call to be forcibly terminated.

However, if the response information and the response confirmation information match, the service control unit 240 controls the incoming call requested by the calling terminal 150 to be set according to the conventional method.

For convenience of understanding and explanation, a brief description will be made of a conventional method for setting up an incoming call to an outbound roaming terminal.

3 is a flowchart illustrating a method for setting an incoming call to an outbound roaming terminal according to a conventional method.

In step 310, when the GMSC 110 requests an incoming signal from the originating terminal 150 to the called terminal 160, the GMSC 110 transmits a transmission routing message to the HLR 140.

In step 315, the HLR 140 transmits a roaming information request message (PRN) to a foreign exchange where the destination terminal 160 is located according to the transmission routing message.

Accordingly, in step 320, the foreign exchange checks whether the called terminal 160 is in a callable state, and if the call is possible, allocates a roaming number (MSRN) and generates a response message (PRN ACK) including the HLR 140. To send).

In step 325, the HLR 140 extracts the roaming number from the response message and transmits it to the GMSC 110.

In step 330 GMSC 110 requests an incoming call to the foreign exchange using the roaming number.

In step 335, the foreign exchange attempts an incoming call to the outbound roaming terminal in response to the incoming call request, and transmits a response message to the GMSC 110 when there is a response from the outbound roaming terminal (step 340).

Here, when the outbound roaming terminal is called, the foreign exchange generates charging information on the incoming call of the outbound roaming terminal. Accordingly, even if the outbound roaming terminal terminates after receiving a spam call, the outbound roaming terminal must pay a fee for the incoming call.

4 is a flowchart illustrating a method for registering a spam blocking service by a called terminal according to an embodiment of the present invention.

As illustrated in FIG. 4, the destination terminal 160 requests registration of a spam blocking service while roaming through the registration device (410). Here, the called terminal 160 may set the blocking information according to the user's input and request the service registration from the registration device. Here, the registration device is a device that the mobile communication service provider is connected to a server that provides a service for service registration and receives and outputs a web page for service registration. The registration device may be a computer, a notebook computer, a wireless terminal, or the like.

The registration device generates and transmits service registration information including the incoming information and the registered service information to the HLR 140 at the request of the called terminal 160. Accordingly, the HLR 140 sets service registration information in accordance with the incoming information (420).

In addition, the registration device transmits the blocking information input from the terminating terminal 160 to the SCP 120, and the SCP 120 maps it to the terminating information and stores it (430). Accordingly, when the service 120 request message is received later, the SCP 120 can extract the incoming information from the message, and extract the blocking information mapped to the incoming information.

5 is a flowchart illustrating a method of blocking spam calls to roamed terminals according to an embodiment of the present invention.

In step 510, the GMSC 110 receives an incoming call request message from the calling terminal 150 to the called terminal 160. The incoming call request message includes incoming information and outgoing information. Here, the incoming information and the originating information may be a mobile identification number (MIN) or an international mobile station identity (IMSI).

In step 515 GMSC 110 requests the subscriber information to the HLR 140 corresponding to the incoming call request message.

That is, the GMSC 110 extracts the incoming information and the outgoing information from the incoming call request message, and generates and transmits a mobile application part send routing information (MAP SRI) including the same to the HLR 140.

In operation 520, the HLR 140 analyzes the transmission routing message and determines whether the called terminal 160 is subscribed to the anti-spam service while roaming.

That is, the HLR 140 extracts incoming information from the transport routing message and extracts roaming information corresponding to the incoming information. The HLR 140 analyzes roaming information to determine whether the called terminal 160 is in a roaming state. If it is determined that the roaming state, the HLR 140 extracts the service registration information by using the incoming information to determine whether it is registered with the spam blocking service while roaming.

If the terminating terminal 160 is not registered in the roaming spam blocking service, in step 522, the HLR 140 generates a transmission routing response message that does not include the roaming spam blocking service registration information and transmits it to the GMSC 110. .

That is, when the terminating terminal 160 is not registered with the spam blocking service while roaming, the HLR 140 generates a transmission routing response message that does not include T_CSI that sets the terminating service registration information and transmits it to the GMSC 110. .

However, if the called terminal 160 is registered to the roaming spam blocking service, in step 525, the HLR 140 generates a transmission routing response message including the roaming spam blocking service registration information and transmits it to the GMSC 110. .

That is, when the terminating terminal 160 is registered with the spam blocking service while roaming, the HLR 140 may generate a transmission routing response message including T_CSI for setting the terminating service registration information and transmit it to the GMSC 110. .

In step 530, the GMSC 110 analyzes the transmission routing response message received from the HLR 140 to determine whether to include spam blocking service registration information while roaming.

That is, the GMSC 110 may determine whether T_CSI is set in the transmission routing response message.

If the roaming spam blocking service registration information is not included in the transmission routing response message, in step 532, the GMSC 110 processes the incoming call according to the conventional method.

However, if the transmission routing response message includes roaming spam blocking service registration information, the GMSC 110 generates a service initiation request message and transmits it to SCP 120 in step 535.

That is, when T_CSI is set in the transmission routing response message received from the HLR 140, the GMSC 110 may generate a service start request message and transmit the generated message to the SCP 120.

When the GMSC 110 receives a transmission routing response message with T_CSI set from the HLR 140, the GMSC 110 may generate a service start request message and transmit the generated message to the SCP 120 to control the spam call blocking service logic to be driven.

Here, the service initiation request message may include incoming information and outgoing information.

In step 540, when the service 120 request message is received, the SCP 120 extracts the blocking information set corresponding to the called terminal 160.

In step 545, SCP 120 generates a control message including the blocking information and transmits it to IP 130.

In operation 550, the IP 130 extracts the blocking information from the received control message and transmits a guide message corresponding to the blocking information to the calling terminal 150.

In step 555, the IP 130 collects response information corresponding to the guide message from the originating terminal 150 and transmits the response information to the SCP 120. For example, IP 130 collects the information received from the originating terminal 150 in response to the guide message for a predetermined time, and generates it as response information.

As described above, when the response information is not collected for a certain time, the IP 130 may generate the unresponsive information as the response information and transmit it to the SCP 120.

In step 560, SCP 120 extracts the response confirmation information set corresponding to the called terminal 160. The SCP 120 compares the response confirmation information and the response information received from the IP 130 to determine whether the incoming call requested from the originating terminal 150 is a spam call.

If the response information and the response confirmation information match, in step 565, the SCP 120 recognizes that the incoming call requested from the calling terminal 150 is a normal communication call and controls the incoming call to be set.

However, if the response information and the response confirmation information are inconsistent, in step 570, the SCP 120 recognizes that the incoming call requested by the calling terminal 150 is a spam call and controls the call to be forcibly terminated.

6 is a flowchart illustrating a normal incoming call processing method to an outbound roaming terminal according to an embodiment of the present invention.

Hereinafter, the steps after step 555 of FIG. 5 will be described in detail.

If the response information and the response confirmation information match, in step 610 SCP 120 recognizes that the incoming call requested from the originating terminal 150 is a normal communication call. Accordingly, SCP 120 generates an incoming request message including the incoming information and transmits to the GMSC (110).

In step 615, the GMSC 110 generates a location query message corresponding to the incoming request message and transmits it to the HLR 140.

Here, the GMSC 110 transmits the location query message to the HLR 140 using the transmission routing message. In the case of the transmission routing message, when the parameter for the service registration information is set, the HLR 140 may recognize that the subscriber requests the information about the service to which the subscriber subscribes.

In step 620, when the location query message is received, the HLR 140 generates and transmits a roaming information request message to the foreign exchange in which the destination terminal 160 is registered. Here, the roaming information request message includes the incoming information for the called terminal 160.

In step 625, the foreign exchange generates a roaming information response message including a roaming number when the called terminal 160 is in a callable state and transmits the roaming information response message to the GMSC 110 through the HLR 140.

Accordingly, in step 630, the GMSC 110 extracts the roaming number from the roaming information response message, and attempts an incoming call to the foreign exchange using the extracted roaming number.

In step 635, the foreign exchange attempts an incoming call to an outbound roaming terminal corresponding to an incoming call attempt from the GMSC 110.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

1 is a block diagram schematically illustrating a configuration of a mobile communication system according to an embodiment of the present invention.

2 is a block diagram showing an internal configuration of a call control device according to an embodiment of the present invention.

3 is a flowchart illustrating a method for setting an incoming call to an outbound roaming terminal according to a conventional method;

4 is a flowchart illustrating a method in which a called terminal registers a spam blocking service according to an exemplary embodiment of the present invention.

5 is a flowchart illustrating a method for blocking spam calls to roamed terminals according to an embodiment of the present invention.

6 is a flow chart illustrating a normal incoming call processing method to an outbound roaming terminal according to an embodiment of the present invention.

Claims (10)

A system for controlling a communication call requested from an originating terminal, An intelligent network peripheral device transmitting a guide message to the calling terminal and collecting and transmitting response information corresponding to the guide message from the calling terminal; A home location register for storing subscriber registration information; In response to the communication call requested from the calling terminal, service registration information for the called terminal is obtained from the home location register, and analyzed. When the called terminal is registered with the anti-spam service while roaming, a service start request message is received. A gateway exchange generating and transmitting; And And a call control device for controlling the intelligent network peripheral device according to the service start request message to receive the response information, and determining whether the communication call is a spam call using the response information and the set response confirmation information. system. According to claim 1, The home location register further stores roaming information for each subscriber. In response to a request from the gateway exchange, the roaming information is analyzed to determine whether the called terminal is in a roaming state, and when roaming, the service registration information includes roaming spam blocking service registration information and is transmitted to the gateway exchange, And the gateway exchange recognizes that the called terminal is in an outbound roaming state when the service registration information includes roaming spam blocking service registration information. According to claim 1, The call control device, And if the response information and the response confirmation information match, controlling the communication call to be terminated by determining that the communication call is a spam call. According to claim 1, The call control device, And extracting the blocking information set corresponding to the called terminal according to the service start request message, and controlling the intelligent network peripheral device to send a guide message corresponding to the blocking information to the calling terminal. . 5. The method of claim 4, And the blocking information is query guide information or query guide pattern information to be sent to the calling terminal set by the called terminal. In the method for controlling the communication call requested at the calling terminal, Generating and transmitting service registration information when the called terminal is in a roaming state according to a request from the gateway exchange; Analyzing, by the gateway exchange, the service registration information and generating and transmitting a service start request message when the called terminal is registered with the anti-spam service while roaming; Controlling, by a call control device, an intelligent network peripheral device according to the service start request message to send a guide message to the calling terminal; Receiving, by the call control device, response information corresponding to the guide message from the intelligent network peripheral device; And And determining, by the call control device, whether the communication call requested from the calling terminal is a spam call using the response information and the set response confirmation information. The method according to claim 6, The called terminal is an outbound roaming called terminal, The communication call control method, characterized in that the incoming call to the called terminal. The method according to claim 6, Determining whether the communication call requested at the calling terminal is a spam call, And if the call control device matches the response information and the response confirmation information, determining that the communication call is a spam call and controlling to terminate the communication call. The method according to claim 6, The call control device controls the intelligent network peripheral device according to the service start request message to control the announcement message to be sent to the calling terminal, Extracting blocking information corresponding to the called terminal according to the service start request; And And controlling the intelligent network peripheral device so that a guide message corresponding to the blocking information is sent to the calling terminal. The method of claim 9, And the blocking information is query guide information or query guide pattern information sent to the calling terminal set by the called terminal.

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