KR20060003274A - Method and system for providing zone based virtual private network service by using mobile communication system - Google Patents

Abstract

The present invention relates to a method and system for providing a region-based virtual private network service using a mobile communication system that provides an additional service using an intelligent network.

The present invention integrates an existing local rate discount system and an existing virtual private network service using a mobile communication system that provides an additional service using an intelligent network, thereby allowing a mobile communication user to designate a specific region and to designate a virtual private network service in a specified region. The present invention relates to a method and system for providing a local-based virtual private network service for easily making a call at a discount or free rate.

According to the present invention, by using the mobile communication terminal that the majority of people in recent years to register the service without adding a separate equipment, there is an advantage that can be used as a discount or free call as well as using an extension call.

Zone Charge Discount, Virtual Private Networks, Service Control Points, Zone Billing Service, VPN, SCP

Description

Method and system for providing region-based virtual private network service using mobile communication system {Method and System for Providing Zone Based Virtual Private Network Service by Using Mobile Communication System}

1 is a block diagram schematically showing the configuration of a ZB VPN service system according to an embodiment of the present invention;

2 is a flowchart illustrating a ZB VPN service registration method according to an embodiment of the present invention;

3A is a flowchart illustrating the first half of a method for providing a ZB VPN service according to a preferred embodiment of the present invention;

3B is a flowchart for explaining the second half of the method for providing a ZB VPN service according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110: MSo 112: MSt

120: calling party wireless access network 122: called party wireless access network

130: MSCo 132: MSCt

140: HLRo 142: HLRt

144: HLRgw 150: SCP

152: IP 160: ZB VPN Server

170: LS 180: Internet

190: user terminal

The present invention relates to a method and system for providing a region-based virtual private network service using a mobile communication system using an intelligent network. More specifically, a subscriber of a mobile communication is ZB VPN (Zone Based Virtual Private) using a mobile communication system using an intelligent network that performs voice communication and data communication through a mobile communication network and provides various additional services using a mobile communication terminal. Method and system for providing region-based virtual private network service using a mobile communication system using an intelligent network that subscribes to an extension call using a virtual private network in a service area registered by a mobile communication subscriber It is about.

Early service providers provided various services by adding a server for controlling additional services and a database for managing additional services to the existing mobile communication network consisting of a switch and a transmission device. In this evolution, the concept of Intelligent Network, which combines computer networks and mobile networks, creates and manages new services quickly and conveniently by hierarchically separating simple telephone call connection and complex service control, is gradually becoming a concept. It became concrete.

As the information society has evolved rapidly, the demand tendency of mobile subscribers has changed rapidly and the necessity of service development by the growth of mobile communication market has necessitated an intelligent network that performs special functions.

The initial intelligent network is connected to the service control point (SCP) that has network-level service control logic, a service management system (SMS) that manages data for service provision, and existing exchanges and SCPs. It consists of a service point (SSP: Service Switching Point) having a function to.

In addition, since the initial intelligent network has a separate control structure for each service, it is difficult to meet the needs of the service users in a timely manner since the intelligent network system including the service switcher must be changed every time the new service is introduced. In addition, since the initial intelligent network does not have international standards for access standards between systems constituting the network, it is incompatible with mobile communication businesses that provide various additional services using the intelligent network. Dependence on the market resulted in a loss of competitiveness.

In order to solve the problems of the initial intelligent network, ITU-T is the main agent to prepare international standards for the standardization of the intelligent network, and a separate regional or private standardization group promotes standardization for each field of the intelligent network.

The intelligent network is a transport layer that actually exchanges and transmits communication information such as voice and data around the SSP, an STP-centric signal layer that transfers control signals between intelligent network elements, and controls the demand for intelligent network services generated from the transport layer. It consists of the SCP-centered service layer.

A mobile communication system utilizing such an intelligent network provides various supplementary services to a mobile subscriber. Zone-based billing service (for example, SK Telecom's TTL regional discount plan) and virtual private network service (for example, SK Telecom's VPN service) are examples of additional services using intelligent networks.

The regional discount plan service is a discount or free calling service that applies different rates to call charges when a mobile subscriber uses a mobile communication service in a specific region.

This regional discount rate service is performed in the following manner. A mobile communication operator operating a mobile communication system designates a specific area in which a mobile communication service can be provided by a base station of a mobile communication system scattered throughout the country as a service zone in advance. In order to use the regional discount plan service provided by the mobile communication service provider, subscribers select a desired region from the specific region designated by the mobile communication service provider to subscribe to the regional discount plan service.

When the subscription is completed, if the mobile subscriber makes a call by originating or receiving in the region selected by the mobile subscriber, a discounted or free fee is charged compared to when the call is made in other regions.

On the other hand, the virtual private network service is a service that provides a function that can be used conveniently with a simple operation, such as an extension phone of a normal landline telephone. This virtual private network service is performed in the following manner.

The mobile subscribers access the customer management server of the mobile operator to subscribe to the virtual private network service in order to receive the virtual private network service. When the subscription is completed, the mobile service provider designates mobile subscribers joining the same virtual private network as a specific group, and assigns a shortcut number to each mobile subscriber in the designated group.

When a mobile subscriber attempts to make a call, the mobile subscriber enters and dials only a shortcut number of a called party that has joined the same virtual private network in place of the existing called mobile phone number.

On the other hand, the local discount rate service and the virtual private network service using the intelligent network in such a mobile communication system has the advantage that in the case of the former, the discount or free call charge is charged only in the region where the caller is located. There is an advantage of simplifying the call during the call between subscribers specified by the same virtual private network.

By combining these two benefits, if multiple mobile subscribers live or work together in a particular area, they can easily use internal calls using virtual private network services while using discounted or free calls with local discount plan services. There is a desire of mobile subscribers.

However, the new mobile supplementary service that integrates local discount rate service and virtual private network service and can make outgoing calls using speed dial number through virtual private network in a specific area while simultaneously calling with discount or free call rate It is not provided to mobile subscribers through a mobile communication system.

In order to solve this problem, the present invention provides a virtual private network service concept for simply making a call using a speed dial number in a mobile communication system by adding a local discount rate service for adding a discount rate or a free rate when a call is made in a specific region. When mobile subscribers make a simple call using a virtual private network, they offer discounted or free calls if the caller or called party is located in the same specific area, and refuses to use the service if the caller is not located in the specific area. When the called party is not located in a specific area, the present invention provides a service method and system for providing a call to the caller and providing a call using a general switching network instead of an intelligent network.

In order to achieve the above object, according to the first object of the present invention, an originating mobile communication switching center (MSC: Mobile Switching, hereinafter referred to as 'MSC'), an originating home location register (HLR: Home Location Register, hereinafter 'HLR') Intelligent network consisting of a zone-based Virtual Private Network Service Control Point (ZB VPN SCP), a customer management server, and a user terminal. A method of registering a region-based virtual private network service using a mobile communication system in a mobile communication system providing an additional service using an intelligent network, comprising: (a) receiving a request to subscribe to the ZB VPN service from the user terminal; (b) registering the ZB VPN service with the originating HLR; And (c) registering the ZB VPN service with the ZB VPN SCP.

In addition, according to the second object of the present invention, the calling mobile terminal (MS: Mobile Station, hereinafter referred to as "MS"), the called MS, the calling mobile communication switching center (MSC: Mobile Switching, hereinafter referred to as "MSC" ), Called MSC, calling home location register (HLR), called HLR, gateway HLR, zone based virtual private network service control point (ZB VPN SCP: Zone Based Virtual Private) An intelligent network that includes a Network Service Control Point (hereinafter referred to as 'ZB VPN SCP'), an Intelligent Peripheral (IP), and a Zone Based Virtual Private Network (ZB VPN) database. A method of providing a region-based virtual private network service using a mobile communication system in a mobile communication system, the method comprising: (a) receiving an outgoing signal from the calling MS at the calling MSC to provide the ZB VPN service to the calling HLR;Reaching out step; (b) receiving an analysis information request signal confirming whether to provide the ZB VPN service from the calling MSC; (c) checking the locations of the calling mobile terminal and the called mobile terminal; (d) determining whether to provide the ZB VPN service; (e) in the case of providing the ZB VPN service as a result of the step (d), establishing a call between the calling MS and the called MS to perform a call using the ZB VPN service; And (f) terminating the call of step (e) and transmitting a call result to the calling MSC.

In addition, according to a third object of the present invention, a zone based virtual private network (hereinafter, referred to as a 'ZB VPN') service in a mobile communication system that provides a number of additional services using an intelligent network. A system for providing a call, comprising: a calling mobile terminal (MS: Mobile Station, hereinafter referred to as "MS") that performs voice and data communication using the ZB VPN service by calling using a service call number; An originating mobile telecommunication switching center (MSC: Mobile Switching Center, hereinafter referred to as 'MSC') for providing the ZB VPN service to the originating MS; Stores the subscription information of the ZB VPN service and generates a ZB VPN service access code (SAC: Service Access Code, hereinafter referred to as 'SAC') called a Home Location Register (HLR). Called); A called MS which performs voice and data communication using the ZB VPN service with the calling MS; A called MSC providing a call to the called MS using the ZB VPN service in association with the calling MSC; A called-side HLR that locates the called-side MS via the called-side MSC; A customer management server that processes the subscription of the ZB VPN service and creates and manages a service area of the ZB VPN service; A location-based virtual private network service control point for controlling the calling mobile communication switching center by determining whether to provide the ZB VPN service by comparing the locations of the calling MS and the called MS with a service area of the ZB VPB service; ZB VPN SCP: Zone Based Virtual Private Network Service Control Point, hereinafter referred to as 'ZB VPN SCP'); A gateway HLR relaying all signals between the ZB VPN SCP and the calling party HLR and the called party HLR; An Intelligent Peripheral (IP) for receiving a voice announcement service processing signal from the ZB VPN SCP and transmitting a voice announcement message to the calling MSC; And a location server configured to register and manage the ZB VPN service area.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram schematically showing the configuration of a ZB VPN service system according to a preferred embodiment of the present invention.

According to a preferred embodiment of the present invention, a ZB VPN service system includes a calling mobile station (MSo) 110, a called mobile station (MSt). MSt '), the calling party radio access network 120, the called party radio access network 122, the calling party mobile communication switching center (MSCo: Mobile Switching Center Origination (MSCo) hereinafter) (MSCo) 130, the called party mobile communication Switching station (MSCo: Mobile Switching Center Termination, hereinafter referred to as 'MSCt') 132, originating home location register (HLRo: HLRo) (140), called party's home location register ( HLRt: Home Location Register Termination (hereinafter referred to as "HLRt") (142), Gateway Home Location Register Gateway (HLRgw) (hereinafter referred to as "HLRgw") (144), Zone-based Virtual Private Network (ZB VPN: Zone) Based Virtual Private Network, hereinafter referred to as 'ZB VPN') Service Control Point (SCP: Service Control Point, hereinafter referred to as 'SCP') 150, Intelligent Peripheral (IP: Intelligent Peripheral, hereinafter referred to as 'IP') 152, Customer Management Server 160, Internet 180, It is configured to include a user terminal 190.

MSo (110) according to a preferred embodiment of the present invention performs a phone call in a wireless communication with the other party through the MSCo (130) via the originating side wireless access network 120. In addition, the mobile station performs a call with the MSt 112 by calling using a service calling number, which is a called party's telephone number including a feature code to use the ZB VPN service, or a shortcut number assigned to the ZB VPN service.

The originating wireless access network 120 is composed of a base station transmission system (BTS) (not shown) and a base station controller (BSC) (not shown). Here, the base station transmitter (not shown) is arranged in each cell unit and transmits a call request generated from the MSo 110 to the MSCo 130 or the location of the MSo 110 existing in the cell area under its control. Perform location registration to figure out. The destination radio access network 122 performs the same function as the source radio access network 120. However, the call request is received from the MSCt 132 and transmitted to the MSt 112.

The MSCo 130 has a control function for efficiently operating the calling party radio access network 120 and an interworking function with an exchange of a public telephone network (not shown). When the MSCo 130 registers the location of the MSo 110 through the originating wireless access network 120, the MSCo 130 is located in a visitor location register (VLR) (not shown) in the MSCo 130. After temporarily storing the subscriber information, request the location registration of the MSo (110) to the HLRo (140).

The MSCo 130 according to the preferred embodiment of the present invention receives the service originating number or the speed dial number, which is the called party's mobile telephone number including the feature code (for example, # 88), from the MSo 110 and the HLRo. The ZB VPN service is performed by checking whether the subscriber is the subscriber of the ZB VPN service.

The HLRo 140 is a database that stores a service profile of subscriber information of a mobile terminal user, including a subscriber's telephone number, a mobile identification number (MIN), and a terminal unique number (Electronic Serial Number: ESN). And service type information. The HLRo 140 performs a function of storing subscriber information including information of the calling party radio access network 120 and the MSCo 130 where the MSo 110 is located.

When the mobile subscriber subscribes to the ZB VPN service, the HLRo 140 according to the preferred embodiment of the present invention sets the ZB VPN service field in the subscriber DB and stores the ZB VPN service subscription information, and the ZB VPN service in the MSo 110. ZB VPN service trigger information to the MSCo 130 so that the MSCo 130 receiving the outgoing signal can request the ZB VPN service from the ZB VPN SCP 150 when the call is sent using a shortcut number to use Request registration of subscriber information, including.

In addition, a ZB VPN service access code (SAC), which is a service code for identifying a ZB VPN service to be transmitted to the MSCo 130 from other additional services when performing the ZB VPN service in a routing number table, In addition, hereinafter referred to as 'SAC', and when the caller location request signal is received from the ZB VPN SCP 150 via the HLRgw 144, the MSCo 130 requests a call test to determine the location of the MSo 110. The information is then sent back to SCP 150 via HLRgw (144).

In the above, the MSo 110, the originating side wireless access network 120, the MSCo 130, and the HLRo 140 have been described with reference to the calling party. The MSt 112, the destination wireless access network 122, the MSCt 132, and the HLRt 142 of the called party share the general functions of the mobile communication system performed by each component of the calling party compared to the called party. To perform.

In addition, the HLRt 142 according to a preferred embodiment of the present invention receives a caller location request signal from the ZB VPN SCP 150 via the HLRgw 144 to determine the location of the called party's MSt 112, and the information obtained Is sent back to SCP (150) via HLRgw (144). In addition, the HLRgw 144 according to the preferred embodiment of the present invention serves to relay all signals transmitted to the SCP 150 and the HLRo 140 or the HLRt 142.

In general, SCP is a system that performs core functions for performing intelligent network services. It is composed of a program for controlling additional services and a data system in which data of a service subscriber is concentrated. The ZB VPN SCP 150 according to the preferred embodiment of the present invention receives a service registration request from the customer management server 160 when the mobile subscriber subscribes to the ZB VPN service, and provides service subscriber information, shortcut numbers, and services in its own database. Store and manage local information.

In addition, the ZB VPN SCP 150 according to a preferred embodiment of the present invention receives a location analysis information request from the MSCo (130) using the MSCo (130) or MSCt (132) MSo (110) and / or MSt ( 112) If the location of MSo (110) and MSt (112) are both in the service area set up when signing up for the ZB VPN service, ZB VPN service is provided, and MSo (110) is in the service area set up when signing up for the ZB VPN service. If it is not located, the service is rejected. If the MSt 112 is not located in the specific area set when the user subscribes to the ZB VPN service, the announcement is made to the MSo 110 using the IP 152 (for example, "No connection with the customer." I'm connecting to the commercial network. After the connection, you will be charged, so please disconnect if you don't want it.

IP 152 is a device that performs voice services such as voice guidance function, voice synthesis function, voice recognition function, and voice database information management function, and performs data services such as protocol conversion function and data network connection function.

The customer management server 160 according to the preferred embodiment of the present invention receives a ZB VPN service subscription request from the user terminal 190 via the Internet 180, requests the service registration to the HLRo 140, and the subscriber designates it. If the service area is not a registered service area, use the Location Server 170 to register a new service area and provide subscriber information and shortcut number information to the ZB VPN SCP 150 to use the ZB VPN service. Register.

The location server 170 according to the preferred embodiment of the present invention stores and manages the service area selected by the mobile subscriber to use the ZB VPN service, and transmits information on the service area to the ZB VPN SCP. In addition, ZB VPN SCP's database is updated by sending information about the service area stored every day to ZB VPN SCP.

The Internet 180 refers to a global open computer network architecture that provides the TCP / IP protocol and various services that exist in the upper layers, namely HTTP, Telnet, FTP, DNS, SMTP, SNTP, NFS, and NIS.

The user terminal 190 refers to a computer for accessing the customer management server 160 to subscribe to a ZB VPN service utilizing an intelligent network of a mobile communication system, and may be any one of a desktop computer and a laptop computer. There is a built-in web browser for accessing (180).

2 is a flowchart illustrating a ZB VPN service registration method according to an embodiment of the present invention.

A mobile communication subscriber who wants to receive a ZB VPN service using an intelligent network of a mobile communication system accesses a customer management server 160 through the Internet 180 using a user terminal 190. When the mobile subscriber transmits a ZB VPN service subscription request signal to the customer management server 160 through a predetermined procedure (S210), the customer management server 160 transmits a service registration request signal to the HLRo 140 (S212). ). The HLRo 140 sets the ZB VPN service field in its own subscriber database, stores the subscriber's information (S214), and transmits a service registration completion signal to the customer management server 160 (S216). The customer management server 160 transmits a service subscription completion signal to the user terminal 190 (S218) to notify the mobile subscriber of the completion of subscription.

Here, when the HLRo 140 makes an outgoing call using the shortcut number to use the ZB VPN service by the MSo 110, the MSCo 130 receiving the outgoing signal requests the ZB VPN SCP service from the ZB VPN SCP 150. The subscriber information registration request signal including the ZB VPN service trigger information is transmitted to the MSCo 130 (S220). Upon receiving the subscriber information registration request signal, the MSCo 130 transmits a subscriber information reception completion signal to the HLRo 140 informing that the subscriber information has been registered (S222).

Upon receiving the registration completion signal from the MSCo 130, the HLRo 140 generates a ZB VPN SAC to be transmitted to the MSCo 130 when the ZB VPN service is performed in a routing number table of the subscriber DB in the self. Add to the table (S224). The ZB VPN SAC is an identification number for distinguishing the ZB VPN service from other additional services.

Meanwhile, after transmitting the service subscription completion signal to the user terminal 190, the customer management server 160 determines whether the service area designated by the service subscriber is a service area that is already set in the location server 170 ( S226). As a result of the determination in step S226, if the service area designated by the service subscriber is a service area already set in the location server 170, the process proceeds to step S230. As a result of the determination in step S226, the service area specified by the service subscriber is already located in the location server. If the service area is not set at 170, a new service area is registered at the location server 170 (S228), and information of the subscribers to use the ZB VPN service, the service area, and the speed dial number are stored (S230).

In addition, the customer management server 160 transmits a service registration request signal including subscriber information, service area information, and a shortcut number to the ZB VPN SCP 150 (S232), and receives the service registration request signal from the ZB VPN SCP ( 150 stores subscriber information, service area, and speed dial number in its own database, registers the ZB VPN service, and transmits a service registration completion signal to the customer management server 160 again (S234). If a new service area is registered in the location server 170, the location server 170 transmits information about the service area to the ZB VPN SCP 150. This completes the ZB VPN service subscription procedure.

3A is a flowchart illustrating the first half of a method for providing a ZB VPN service according to a preferred embodiment of the present invention.

A mobile subscriber who has subscribed to the ZB VPN service enters the MSo 110 into the service calling number, which is the called party's mobile telephone number including the characteristic code, for example, '# 880112345678' or a shortcut number such as '1234'. By pressing the transmit button, the MSo 110 transmits an outgoing signal including the called party's telephone number or a shortcut number including the characteristic code to the MSCo 130 (S310).

Here, the characteristic code is an identification code for indicating the intention to use the ZB VPN service and may be defined in various ways such as # 88 or # 77. In addition, a shortcut number is a number that can designate the called party by a relatively small number of combinations instead of the called party's phone number in order to simplify the call between mobile subscribers using the ZB VPN service, and defined in various ways such as '1234' or '123456'. Can be.

Upon receiving the outgoing signal, the MSCo 130 transmits the service request signal including the called or shortened number with the feature code to the HLRo 140 (S312). Receiving the service request signal, the HLRo 140 checks whether it is subscribed to the ZB VPN service through the MIN of the MSo 110 and transmits a service response signal including the SAC and the called party's phone number to the HLRo 140 (S314). ). Upon receiving the service response signal, the MSCo 130 transmits an analysis information request signal including the SAC and the called party's number to the ZB VPN SCP 150 (S316).

Upon receiving the analysis information request signal, the ZB VPN SCP 150 transmits a caller location request signal to the MSCo 130 via the HLRgw 144 and the HLRo 140 in order to confirm the location of the MSo 110. (S318). The MSCo 130 receiving the location request signal detects the location of the MSo 110 through a call test with the MSo 110 (S320), and sends a caller location response signal including the location information of the MSo 110. It transmits to ZB VPN SCP 150 via HLRo 140 and HLRgw 144 in sequence (S322).

Upon receiving the caller location response signal, the ZB VPN SCP 150 transmits the caller location request signal to the MSCt 132 via the HLRgw 144 and the HLRt 142 in order to confirm the location of the called party (S324). ). Upon receiving the location request signal, the MSCt 132 detects the location of the MSt 112 through the call test with the MSt 112 (S326), and sends a caller location response signal including the location information of the MSo 110. The transmission is transmitted to the ZB VPN SCP 150 via the HLRt 142 and the HLRgw 144 (S328).

The ZB VPN SCP 150 confirms the caller's location from the received caller location response signal and the caller's location from the received caller location response signal, corresponding to the analysis information request signal received from the MSCo 130 in step S316. In order to transmit the analysis information response signal, the caller and the receiver determine whether to provide the ZB VPN service by determining whether the caller and the receiver are located in the area designated as the service area when the subscriber subscribes to the ZB VPN service.

3B is a flowchart for explaining the second half of the method for providing a ZB VPN service according to a preferred embodiment of the present invention.

First, the ZB VPN SCP 150 determines the service area of the subscriber by receiving information about the service area from the location server 170 according to a cycle (for example, one day) set by the mobile communication system operator. The ZB VPN SCP 150 determines whether the caller is located in an area designated as a service area at the time of joining the ZB VPN service (S330). As a result of the determination in step S330, when the caller is not located in the area designated as the service area when the user subscribes to the ZB VPN service, the caller does not provide the ZB VPN service to the caller, and thus, responds to the analysis information for rejecting the provision of the ZB VPN service to the MSCo 130. The signal is transmitted (S332). Upon receiving the analysis information response signal of step S332, the MSCo 130 transmits a call unavailable signal to the MSo 110 (S334) to terminate call setup.

As a result of the determination in step S330, when the caller is located in the area designated as the service area at the time of subscription to the ZB VPN service, it is determined whether the called party is located in the area designated as the service area at the time of subscription to the ZB VPN service (S336).

As a result of the determination in step S336, when the called party is not located in the area designated as the service area when joining the ZB VPN service, the called party is not located in the ZB VPN service area by using the IP 152, and thus the general call cannot be provided because the called party is not located in the ZB VPN service area. Analyzing information response signal for general switched network access to perform voice prompt service to attempt to connect using IP 152 (S338) and fail to provide ZB VPN service to MSCo 130 without using ZB VPN service. Is transmitted along with the voice announcement message generated in step S338 (S340). Upon receiving the voice prompt message and the analysis information response signal, the MSCo 130 transmits the voice guide message to the MSo 110 and connects to the MSCt 132 through a commercial network to connect to the general call. Make a regular call with). Here, the procedure of performing the voice guidance service performed by the IP 152 is a well-known technique, and thus a detailed description thereof will be omitted.

As a result of the determination in step S336, when the called party is located in the area designated as the service area when the user subscribes to the ZB VPN service, both the caller and the called party are located in the area designated as the service area when the user subscribes to the ZB VPN service. The signal is transmitted to the MSCo 130 (S342). The MSCo 130 receiving the analysis information response signal is connected to the MSCt 132 so that the MSo 110 and the MSt 112 perform a call by the ZP VPN service (S344).

When the MSo 110 terminates all calls with the MSt 112 and transmits a disconnection signal to the MSCo 130 (S346), the MSCo 130 receiving the disconnection signal receives the ZB VPN SCP 150 for charging. The call result report request signal for requesting call information by the ZB VPN service is transmitted (S348). Upon receiving the call result report request signal, the ZB VPN SCP 150 transmits a call result report response signal including call log information between the MSo 110 and the MSt 112 to the MSCo 130 (S348).

The MSCo 110 performs a discount or free charging at a rate set by the operator of the mobile communication system based on the call log information included in the received call result report response signal.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, a mobile communication service that has been in possession of an extension telephone service, which has been recently purchased and installed by providing an existing extension switch by integrating an existing local discount rate service and an existing virtual private network service, has been provided. Mobile subscribers who have subscribed to ZB VPN service by using the intelligent network of mobile communication system without using any additional equipment by using the terminal can easily call in ZB VPN service area and receive discount or free call benefits. have.

Claims (31)

Calling party mobile switching center (MSC), calling home location register (HLR) (HLR), zone-based virtual private network (ZB VPN) Virtual Private Network, hereinafter referred to as 'ZB VPN') Intelligent Network including Service Control Point (SCP), Customer Management Server, Location Server and User Terminal A method of registering a region-based virtual private network service using a mobile communication system in a mobile communication system providing an additional service using an intelligent network, (a) receiving the ZB VPN service subscription request from the user terminal and processing the ZB VPN service subscription; (b) registering the ZB VPN service with the originating HLR; And (c) registering the ZB VPN service with the ZB VPN SCP; Method for registering a region-based virtual private network service using a mobile communication system comprising a. The method of claim 1, wherein step (a) comprises: And registering information about a ZB VPN service area for receiving the ZB VPN service from the user terminal. The method of claim 1, wherein step (b) comprises: (b1) transmitting the ZB VPN service registration request signal to the calling party HLR; (b2) storing the ZB VPN service subscription information by setting the ZB VPN service field in its database at the calling-side HLR; (b3) receiving the ZB VPN service registration completion signal from the originating HLR; (b4) transmitting a subscription information registration request signal including ZB VPN service trigger information from the originating HLR to the originating MSC; (b5) transmitting a subscription information registration completion signal from the calling MSC at the calling HLR; And (b6) setting a zone based virtual network service access code (hereinafter, referred to as 'ZB VPN SAC') in the originating HLR; Method for registering a region-based virtual private network service using a mobile communication system comprising a. The method of claim 3, wherein the ZB VPN service trigger information, In the case of receiving an outgoing signal including a speed dial number from the originating MS, it is information for controlling the originating MSC to request the ZB VPN service to the ZP VPN SCP. How to register a virtual private network service. The method of claim 3, wherein the ZB VPN SAC, And an identification code for distinguishing the ZB VPN service from a plurality of supplementary services provided by using the intelligent network. The method of claim 3, wherein the ZB VPN SAC, And a routing number table configured to distinguish a plurality of supplementary services using the intelligent network in its own database in the calling party's HLR. The method of claim 1, wherein step (c) (c1) determining whether the ZB VPN service area is registered with the location server; (c2) if the ZB VPN service area is not registered in the location server as a result of the determination of step (c1), registering a ZB VPN service area; (c3) storing the ZB VPN service subscription information in the location server; (c4) transmitting the ZB VPN service registration request signal including the ZB VPN service subscription information to the ZB VPN SCP; (c5) receiving the ZB VPN service registration completion signal from the ZB VPN SCP; And (c6) receiving information regarding the ZB VPN service area from the location server at the ZB VPN SCP Method for registering a region-based virtual private network service using a mobile communication system comprising a. According to claim 3 or 7, wherein the ZB VPN service subscription information, The area-based virtual private network service providing system using a mobile communication system, characterized in that the personal information of the subscriber to the ZB VPN service, the ZB VPN service area information registered by the subscriber and the speed dial number for the extension call registered by the subscriber. . Calling mobile terminal (MS: Mobile Station, hereinafter referred to as 'MS'), called MS, calling mobile communication switching center (MSC: Mobile Switching Center, hereinafter referred to as 'MSC'), called MSC, calling home Location Register (HLR: Home Location Register, hereinafter referred to as 'HLR'), Recipient's HLR, Gateway HLR, Zone Based Virtual Private Network (ZB VPN) Service Control Point ( SCP: Service Control Point (hereinafter referred to as 'SCP') and Intelligent Peripheral (IP: Intelligent Peripheral) As (a) receiving an outgoing signal from the calling MS at the calling MSC and requesting the ZB VPN service to the calling HLR; (b) receiving an analysis information request signal confirming whether to provide the ZB VPN service from the calling MSC; (c) identifying the location of the calling MS and the called MS; (d) determining whether to provide the ZB VPN service; (e) in the case of providing the ZB VPN service as a result of the step (d), establishing a call between the calling MS and the called MS to perform a call using the ZB VPN service; And (f) ending the call of step (e) and sending a call result to the calling MSC Region-based virtual private network service providing method using a mobile communication system comprising a. The method of claim 1, wherein step (a) comprises: (a1) receiving the originating signal including a service originating number or a shortcut number from the originating MS at the originating MSC; (a2) transmitting a ZB VPN service request signal including the service calling number or the shortcut number from the calling MSC to the calling HLR; And (a3) A ZB VPN service response signal including a ZB VPN service access code (SAC) from the originating HLR from the originating MSC and a called party's mobile telephone number included in the service originating number at the originating MSC. Receiving Region-based virtual private network service providing method using a mobile communication system comprising a. The method of claim 10, wherein the service call number is, And a called party's mobile communication telephone number including a feature code for identifying the ZB VPN service. The method of claim 10, wherein the shortcut number is And a number assigned to a mobile communication subscriber to perform an extension call when subscribing to the ZB VPN service. The method of claim 10, wherein the ZB VPN SAC, A service code for distinguishing the ZB VPN service from a plurality of supplementary services utilizing the intelligent network, which is stored in a routing number table in its own database. How to Provide. The method of claim 10, wherein step (c) comprises: (c1) using the gateway HLR to transmit a caller location request signal to the calling MSC via the calling HLR; (c2) determining a location of the calling MS by performing a call test with the calling MS at the calling MSC; (c3) receiving a caller location response signal including the location information of the calling MS identified by the calling MSC through the calling HLR using the gateway HLR; (c4) transmitting a called party location request signal to the called MSC via the called HLR using the gateway HLR; (c5) determining the location of the called MS by performing a call test with the called MS at the called MSC; And (c6) receiving a called party location response signal including the location information of the called party MS identified by the called party MSC via the called party HLR using the gateway HLR; Region-based virtual private network service providing method using a mobile communication system comprising a. The method of claim 10, wherein step (d) (d1) determining whether the location of the caller MS identified in step (c) is located in the ZB VPN service area stored in the ZB VPN database; (d2) denying the ZB VPN service to the calling MSC when the location of the calling mobile terminal is not located in the ZB VPN service area stored in the ZB VPN database. Transmitting an analysis information response signal; (d3) determining whether the location of the called party MS identified in step (c) is located in the ZB VPN service area stored in the ZB VPN database; (d4) If the location of the called party MS is not located in the ZB VPN service area stored in the ZB VPN database as a result of the determination in step (d3), attempts to make a call using the general switching network to the calling mobile communication exchange. Transmitting an analysis information response signal; And (d5) transmitting to the calling MSC an analysis information response allowing the provision of the ZB VPN service; Region-based virtual private network service providing method using a mobile communication system comprising a. The method of claim 15, wherein step (d2), And transmitting the ZB VPN service access rejection signal from the calling MSC receiving the analysis information response signal to the calling MS and releasing a call setup with the calling MS. A method of providing region-based virtual private network service using The method of claim 15, wherein step (d4), And using the intelligent peripheral device, transmitting a voice guidance message to the calling MSC indicating that the called party is not located in the ZB VPN service area and attempts to make a call using a general switching network. A method of providing region-based virtual private network service using system. The method of claim 9, wherein step (f) comprises: (f1) receiving a call disconnection signal from the calling MS at the calling MSC and releasing a call setup; (f2) receiving a call result report request signal which is information on a call record including a talk time from the calling MSC; And (f3) transmitting a call result report response signal including information on the call record to the calling MSC; Region-based virtual private network service providing method using a mobile communication system comprising a. As a system that provides a zone based virtual private network (hereinafter referred to as 'ZB VPN') service in a mobile communication system that provides a number of additional services using an intelligent network. A calling mobile terminal (MS: Mobile Station, hereinafter referred to as "MS") which performs voice and data communication using the ZB VPN service by calling using a service calling number or a speed dial number; A calling MSC (MSC: Mobile Switching Center, hereinafter referred to as 'MSC') for providing the ZB VPN service to the calling MS; Stores the subscription information of the ZB VPN service and generates a ZB VPN service access code (SAC: Service Access Code, hereinafter referred to as 'SAC') called a Home Location Register (HLR). Called); A called MS which performs voice and data communication using the ZB VPN service with the calling MS; A called MSC providing a call to the called MS using the ZB VPN service in association with the calling MSC; A called-side HLR that locates the called-side MS via the called-side MSC; A customer management server that processes the subscription of the ZB VPN service and creates and manages a service area of the ZB VPN service; A location-based virtual private network service control point (ZB VPN) for controlling the originating MSC by determining whether to provide the ZB VPN service by comparing the location of the calling MS and the called MS with a service area of the ZB VPB service. SCP: Zone Based Virtual Private Network Service Control Point, hereinafter referred to as 'ZB VPN SCP'); A gateway HLR relaying all signals between the ZB VPN SCP and the calling party HLR and the called party HLR; An Intelligent Peripheral (IP) for receiving a voice announcement service processing signal from the ZB VPN SCP and transmitting a voice announcement message to the calling MSC; And Location Server for registering and managing the ZB VPN service area Region-based virtual private network service providing system using a mobile communication system comprising a. The method of claim 19, wherein the service call number is, And a called party's mobile communication telephone number including a feature code, which is an identifier for using the ZB VPN service. The method of claim 19, wherein the shortcut number, And a number assigned to a mobile communication subscriber to perform an extension call when subscribing to the ZB VPN service. 20. The system of claim 19, wherein the calling MSC is Transmitting a service request signal including the service calling number to the calling party's HLR and receiving the service response signal including the ZB VPN SAC and the called party's number from the calling party's HLR; Based virtual private network service providing system. 20. The system of claim 19, wherein the calling MSC is Transmitting a signal for requesting location analysis information asking whether to provide the ZB VPN service to the ZB VPN SCP and receiving a location analysis information response that is a response to whether to provide the ZB VPN service from the ZB VPN SCP; Providing a call using the ZB VPN service to the calling MS and the called MS, rejecting the ZB VPN service access to the calling MS, or sending a voice announcement message to the calling MS and making a general call. Area-based virtual private network service providing system using a mobile communication system, characterized in that to perform any one of the functions provided. The method of claim 19, wherein the source HLR, Receiving a registration request signal of the ZB VPN service from the customer management server stores the subscription information of the ZB VPN service, and transmits a registration completion signal of the ZB VPN service to the customer management server using a mobile communication system Region-based virtual private network service providing system. The method of claim 19, wherein the source HLR, When the originating MS sends the call using the speed dial number to use the ZB VPN service, the calling MSC receives the calling signal so that the calling MSC can request the ZB VPN service to the ZB VPN SCP. Transmitting the subscription information signal including a shortcut number, and generates the ZB VPN SAC and stores in the own database, the area-based virtual private network service providing system using a mobile communication system. 26. The method of claim 19, 22 or 25, wherein the ZB VPN SAC, A service code for distinguishing the ZB VPN service from a plurality of supplementary services utilizing the intelligent network, which is stored in a routing number table in its own database. Provide system. The method of claim 19, wherein the ZB VPN service subscription information, The area-based virtual private network service providing system using a mobile communication system, characterized in that the personal information of the subscriber to the ZB VPN service, the ZB VPN service area information registered by the subscriber and the speed dial number for the extension call registered by the subscriber. . The method of claim 19, wherein the ZB VPN SCP, Receiving the service area information from the location server, if the originating MS is not located in the service area, the mobile communication characterized in that denying the ZB VPN service access of the calling MS through the calling MSC Region-based Virtual Private Network Service Providing System. The method of claim 19, wherein the ZB VPN SCP, Receiving the service area information from the location server, when the calling party MS is located in the service area and the called party MS is not located in the service area, it performs voice guidance using the intelligent peripheral device and the calling party. A local-based virtual private network service providing system using a mobile communication system, characterized in that the MSC controls to provide voice and data communication to the calling MS using a general switching network. The method of claim 19, wherein the ZB VPN SCP, Receiving the service area information from the location server, and when both the calling MS and the called MS are located in the service area, controlling the calling MSC to provide the ZB VPN service to the calling MS. Region-based virtual private network service providing system using a mobile communication system. 20. The system of claim 19, wherein the location server is And providing the ZB VPN service area information to the ZB VPN SCP at intervals set by the mobile communication system operator.

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