KR100518194B1 - Method and system for providing global roaming service - Google Patents

Abstract

The present invention relates to a method and system for providing an economical international roaming service. The international roaming incoming call service method of the present invention comprises the steps of receiving international roaming application information by a roaming service subscription server, assigning a temporary user identification number corresponding to the international roaming application information, international roaming application information, and temporary user identification. Registering a number with a roaming information database server, transmitting a call transfer request signal for a domestic user telephone number to a customer management system coupled to a first exchange, requesting a call transfer from a customer management system by a roaming service subscription server Receiving a response signal, receiving an outgoing request signal from the first exchange, retrieving a roaming information database server corresponding to the temporary subscriber identification number from the roaming information database server, and calling the second exchange through the international network. Transmitting an access request signal to the first exchange Transmitting a signal, and receiving a call setup signal from a second exchange, wherein the calling terminal makes a call with an overseas destination terminal using a channel established by the call connection.

Description

International roaming incoming call service method and system {METHOD AND SYSTEM FOR PROVIDING GLOBAL ROAMING SERVICE}

The present invention relates to a method and system for providing an economical international roaming service.

In the current mobile communication service, when a mobile communication service subscriber visits overseas or visits a different local mobile service provider area, the mobile communication service subscriber moves to both subscribers in both regions by interlocking agreements between the mobile operators and the system. Roaming service is a service that provides telephone call and incoming service.

1 is a view schematically showing a conventional international roaming service system between mobile communication providers.

As shown in FIG. 1, the conventional roaming service system requires mobile communication service providers to establish an international roaming gateway system 10 and an international roaming billing settlement system 11 through bilateral agreements. For example, when the user A who subscribes to the mobile communication service of the operator A visits the service area of the operator B, the international roaming service receives the location registration message through the operator B's HLR 16b via the operator B's mobile communication network 19b. Is requested to register with the operator B's HLR 16b via the international roaming gateway system 10 after confirming with the subscriber identification number that the subscriber is a roaming agreement with the operator A. This is done by requesting the corresponding subscriber service profile and automatically registering the international roaming service as the B operator with the HLR 16a of the A operator.

In the international roaming call procedure, when a user requests a user A who has subscribed to a roaming service of an operator A who is roaming overseas, the user A's identification number is called, and the operator A's mobile switch 13a receives the user's home HLR ( 16a) requests the subscriber routing information, confirms that the routing information of the user A is the service area of the operator B, and then makes a call request to the operator B's international gateway through the international roaming gateway system 10. . Then, via the international gateway exchange, the mobile exchanger 13b of the B operator who has received the call request from the mobile exchanger 13a of the A operator requests the routing information of the A user to the HLR 16 of the B operator, and the B operator Through the mobile communication network 19b of < RTI ID = 0.0 > A < / RTI >

The billing information of the subscriber who has received the roaming service is left in the billing systems 12a and 12b of each operator, and the billing records are exchanged according to the roaming fee settlement policy between the respective providers, and by the international roaming billing settlement system 11 Settled fee is charged.

As such, the international roaming service between mobile carriers to date is extremely limited in the automatic roaming area due to such complex manganese interworking, billing settlement system implementation and automatic roaming terminal development. In addition, a roaming service user has a problem of overburdening a very expensive international call fee and an international roaming service fee even when using only a roaming incoming service.

Recently, in order to avoid the problem of interworking and billing between these complex mobile communication service provider systems, some special service providers have leased mobile phones of visiting countries to overseas subscribers, and have leased mobile phones to receive overseas calls. Use a method of making the transition.

However, the method of renting a mobile phone of the visiting country requires the user to pay expensive international calls for the calls made to him, and the user needs to apply for a transfer directly. Has to receive a lease, and transfers his / her phone to the received mobile phone.

The present invention is to solve these problems, the user can apply for international roaming service anytime, anywhere, anywhere without roaming agreement between operators, economical international roaming incoming through cheap international VoIP network or international leased network Its purpose is to provide an international roaming incoming call service method and system for receiving services.

Another object of the present invention is to provide an international roaming incoming call service method and system that allows a subscriber to receive a call made to a domestic phone when visiting abroad using a temporary user identification number.

It is still another object of the present invention to provide an international roaming incoming service method and system that is easy to construct a roaming service system.

In order to achieve the above object, there is provided a roaming service subscription server in a roaming service system including a roaming service subscription server and a roaming information database server and coupled to a first exchange in a domestic mobile communication network and a second exchange in a foreign mobile communication network. A method comprising: receiving international roaming application information by the roaming service subscription server, wherein the international roaming application information includes at least a domestic user telephone number, an overseas user telephone number, and user information; Assigning a temporary user identification number corresponding to the temporary user identification number, wherein the temporary user identification number includes an international roaming service provider identification number and a temporary subscriber identification number; Steps to register with the database server Transmitting a call transfer request request signal for the domestic user telephone number to a customer management system coupled to a first exchange, wherein the call transfer request signal includes at least a domestic user telephone number and a temporary user identification number; The management system transmits a signal for changing subscriber supplementary service information corresponding to the domestic user's telephone number to a home location register coupled to the first switch, by which the roaming service subscription server transfers a call from the customer management system. Receiving an application response signal, receiving an outgoing request signal from the first exchange, wherein the first exchange receives a call connection request signal from an originating terminal and requests incoming subscriber routing information from the home location register; Incoming subscriber, including the temporary user identification number, from the home location register Receiving the broadcasting information, and selecting a relay route of an international roaming service provider corresponding to the temporary subscriber identification number among the temporary user identification numbers, and wherein the roaming information database server receives the overseas user telephone number corresponding to the temporary subscriber identification number Retrieving, and transmitting a call connection request signal to the second exchange through an international network combining the first and second exchanges, wherein the call connection request signal is at least the originating identifier corresponding to the originating terminal and the incoming call abroad. Including an overseas user telephone number corresponding to the terminal, transmitting a call progress signal to the first exchange, and receiving a call setup signal from the second exchange, wherein the originating terminal is connected to the call. International roaming incoming call, characterized in that the call with the overseas called terminal using the channel set by the How can services be provided.

In a preferred embodiment, the step of receiving the international roaming subscription information by the roaming service subscription server is performed through a web (Web), an automatic response service (ARS) or an interactive voice response (IVR). In addition, the international network is preferably an international VoIP network or an international leased network.

According to another aspect of the present invention, a roaming service system coupled to at least a first exchange in a domestic mobile communication network and a second exchange in a foreign mobile communication network to provide an international roaming incoming call service, comprising: a Web interface or an IVR (Interactive) A roaming service subscription server having a voice response interface, a roaming information database server coupled to the roaming service subscription server, and a roaming service server coupled to the roaming service subscription server and the roaming information database server. The subscription server receives the international roaming application information, where the international roaming application information includes at least a domestic user telephone number, an overseas user telephone number and user information, and assigns a temporary user identification number corresponding to the international roaming application information. Where the temporary user identification number is And a roaming service provider identification number and a temporary subscriber identification number, wherein the international roaming application information and the temporary user identification number are registered in the roaming information database server and the domestic management system coupled to the first exchange. Transmit a call transfer request request signal for the user's telephone number, wherein the call transfer request request signal includes at least a domestic user telephone number and a temporary user identification number, and the customer management system adds a subscriber corresponding to the domestic user telephone number; Sending a signal for changing service information to a home location register coupled to the first exchange, receiving a call transfer request response signal from the customer management system, wherein the roaming service server requests outgoing from the first exchange; Receives a signal, wherein the first exchange calls from the originating terminal Receive the incoming request signal, request the called subscriber routing information from the home location register, and receive the called subscriber routing information including the temporary user identification number from the home location register, and correspond to the temporary subscriber identification number among the temporary user identification numbers. Selecting a relay route of an international roaming service provider, retrieving an overseas user telephone number corresponding to the temporary subscriber identification number from the roaming information database server, and connecting the first and second exchanges through an international network. Send a call connection request signal to a second exchange, wherein the call connection request signal includes at least an originating identifier corresponding to the originating terminal and an overseas user telephone number corresponding to the overseas terminating terminal; Transmit a signal and receive a call setup signal from the second exchange; Can provide an international roaming incoming call service system, characterized in that the foreign currency and the called terminal using a channel established by the call.

As such, the present invention provides an international roaming incoming call service method (hereinafter, referred to as a "roaming service method") and an international roaming incoming call service system (hereinafter referred to as a "roaming service system"), which are easy to deploy and which can provide a low cost international mobile roaming service. "" May be provided.

As such, the roaming service method and system of the present invention receives international roaming application information including a domestic telephone identification number, an international local incoming telephone identification number, and user information from a user through a web or an IVR, and assigns a temporary user identification number. This procedure includes registering the roaming application information corresponding to the temporary user identification number in the roaming information DB. It also includes a procedure for setting up a temporary user identification number in the HLR of a domestic mobile communication network (PLMN). In addition, when an incoming call is requested from any caller to the corresponding service user, the mobile communication network includes a procedure for transferring a call to a relay exchange of the service provider or a roaming service system of the present invention. In addition, after receiving the incoming call connection request by the relay exchange of the service provider or the roaming service system of the present invention, the corresponding international roaming information is retrieved from the incoming temporary user identification number, and the international local roaming information of the subscriber is available. It includes the procedure for establishing a call connection to a local mobile or public telephone network through an inexpensive international VoIP network or an international leased network as an incoming telephone number.

Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The international roaming service described in the present specification refers to a telephone service in which a subscriber receives a call made from a domestic phone when visiting abroad.

2 is a diagram schematically illustrating a configuration of a roaming service system according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the roaming service system 30 of the present invention includes a roaming service subscription server 40, a roaming information database server 50, and a roaming service server 60.

The roaming service subscription server 40 receives international roaming application information including a user's domestic telephone identifier, an international local call telephone identifier, and user information from the user using the Internet terminal 22 or the telephone terminal 23 through the web or IVR. I receive it. Here, the domestic telephone identifier includes a domestic user telephone number, and the international local incoming telephone identifier includes an overseas user telephone number.

In addition, the roaming service subscription server 40 assigns a temporary user identification number corresponding to the received international roaming application information, and registers the international roaming application information corresponding to the temporary user identification number in the roaming information database server 50, It is automatically linked with CCS (Customer Management System) 20 of the mobile operator, and is responsible for requesting the call transfer supplementary service setting to the mobile carrier's HLR 16a for the call transfer number including the temporary user identification number of the service. do.

The roaming information database server 50 is coupled to the roaming service subscription server 40 and the roaming service server 60 to manage subscriber roaming information and billing information.

After the roaming service server 60 receives an incoming call connection request from the mobile switching center 13a to the corresponding roaming incoming service subscriber, the roaming service server 60 searches for international roaming information from the incoming temporary user identification number, and among the international roaming information of the subscriber. It is responsible for establishing an incoming call connection through an international VoIP network or an international leased line network 21 as an international local incoming phone number.

The core idea of the present invention, which overcomes the problems of the conventional international roaming service, is to allow the mobile exchange to forward the call to the roaming service system of the present invention to a call to a domestic subscriber identification number of a user who is roaming. The temporary user identification number is used.

Table 1 below shows a rule for assigning a temporary user identification number according to a preferred embodiment of the present invention.

5 digits 3 digits 2 digits 8 digits Business ID Roaming Service System Root Number Reserved Temporary Subscriber Identification Number International Roaming Service Provider Identification Number Assign a country identification number not currently used Assignment of subscriber identification serial numberNXXX-XXXX

The temporary user identification number is composed of an operator identification number, a roaming service system routing number, and a temporary subscriber identification number. As described above, the temporary user identification number is assigned to the subscriber by the roaming service subscription server 40 at the time of roaming service application, and through the automatic linkage with the customer management system 20 of the mobile communication service provider, the mobile communication service provider. Is set to the call transfer number of the subscriber in the HLR (16a).

The operator identification number of the temporary user identification number is translated into a telephone number by the mobile communication exchange 13 and used as a routing prefix for outgoing switching to a relay exchange or a roaming service system of an international roaming service provider. .

The roaming service system routing number in the temporary user identification number is used as a routing prefix to distinguish an international roaming service call between the internal systems of the service providers when the international roaming service provider is already making an international call origination service.

The temporary subscriber identification number of the temporary user identification number is used as a key field and billing code of the subscriber's identification and subscriber information.

3 is a flowchart illustrating an international roaming service subscription application and processing procedure according to an embodiment of the present invention.

Referring to FIG. 3, the roaming service subscription server 40 based on the web or IVR receives international roaming application information including a domestic user's phone number, an overseas incoming phone number, and billing related user information from the roaming service user terminal 22. The roaming service is received (S10). The roaming service subscription server 40 then gives the user a temporary user identification number that is not currently being used (S11). The international roaming application information is registered in the roaming information database server 50 using this temporary user identification number as a key (S12, S13, S14).

4 is a flowchart illustrating a procedure in which a roaming service subscription server 40 automatically handles a call transfer request to a CCS 20 of a mobile communication service provider according to an exemplary embodiment of the present invention.

Referring to FIG. 4, a roaming service subscription server 40 that has received a roaming service request from a user of a roaming service user terminal 22 automatically converts a domestic user identification number to a CCS 20 of a corresponding mobile service provider. Apply for call transfer (S15). Receiving the call transfer request request, the CCS 20 requests a change of the call transfer supplementary service information of the subscriber to the HLR 16a of the corresponding operator (S16), and returns its processing response to the CCS 20 (S17). ). The CCS 20 receiving the response information change response from the HLR 16a returns the response to the roaming service subscription server 40 (S18), and the roaming service subscription server 40 notifies the user of this content. (S19).

FIG. 5 is a flowchart illustrating a procedure in which a mobile communication switch 13 transfers a call to a relay switch or a roaming service system of a service provider when a call is requested from an originator to a corresponding service user according to an exemplary embodiment of the present invention. It is a flow chart.

Referring to FIG. 5, when an arbitrary caller makes a call request to a domestic telephone number of a corresponding service user (S31), the domestic mobile communication switch 13a requests the subscriber subscriber routing information to the HLR 16a (S32). . After receiving the request, the HLR 16a searches for the subscriber service profile of the corresponding subscriber and confirms that call forwarding additional service is registered (S33).

The HLR 16a returns the temporary user identification number of the present invention, which is the call transfer number of the subscriber, to the domestic mobile communication switch 13a (S34). Receiving the routing information response of the called subscriber from the HLR 16a, the domestic mobile communication switch 13a confirms that the incoming call to the called subscriber is transferred to the temporary user identification number, and translates the operator identification number among the temporary user identification numbers. (S35), the call is relayed to the relay route of the roaming service system corresponding to the identification number (S36).

6 is a flowchart illustrating a process in which a roaming service system of the present invention processes a call for an international roaming incoming call service after receiving a roaming incoming call request from a mobile communication switch according to an exemplary embodiment of the present invention.

Referring to FIG. 6, roaming service server 60 that receives an outgoing request (ISUP [IAM]; PRI [Setup]) from mobile communication exchange 13a through No.7 ISUP or ISDN PRI signaling, moves immediately. The outgoing answer (ISUP [ACM]; PRI [SetupAck]) is sent to the communication exchange 13a (S36, S37). Then, the overseas incoming call number corresponding to the temporary subscriber identification number is extracted from the roaming information database server 50 (S38).

Next, the roaming service server 60 transmits an incoming call (setup) signal to a mobile communication network or a public telephone network of a corresponding country via an international VoIP network or an international dedicated circuit (S39). At the same time as step S39, call progress is transmitted to the calling mobile communication exchange 13a (S40).

If the incoming connection is successful from the destination exchange in the overseas mobile communication network (S41), the roaming service server 60 keeps the call and relays voice signals (S42, S43, S44). When the call is normally terminated, the roaming service server 60 stores the usage history of the subscriber in the roaming information database server 50. This information is used as billing settlement information.

7 is a view schematically showing an international roaming service system according to an embodiment of the present invention.

Referring to FIG. 7, the roaming service system 30 includes a roaming service subscription server 40, a roaming information database server 50, and a roaming service server 60. The roaming service subscription server 40 includes an IVR subscription reception unit 41, a web subscription reception unit 42, a central control unit 43, a database processing unit 44, and a call transfer service request unit 45. The roaming service server 60 further includes an input call signal processor 61, a call control central processor 62, an output call signal processor 63, an input call voice processor 64, a voice signal exchanger 65 and an output call. And a speech processing unit 66.

The IVR subscription receiving unit 41 of the roaming service subscription server 40 includes a function of receiving a roaming service subscription through a general wired or wireless telephone. The web subscription receiving unit 42 includes a function of receiving a roaming service subscription through a web interface. The central control unit 43 stores the roaming service request received through the subscription receiving units 41 and 42 in the database and transmits a call transfer supplementary service registration request signal to be transmitted to the customer management system (CCS) 20 of the mobile communication operator. Includes the ability to control.

The database processor 44 of the roaming service subscription server 40 includes a function of storing roaming application information in the roaming information database server 50. The call transfer service request unit 45 is coupled to the mobile communication service provider's customer management system 20 to request a call transfer request in order to apply for a call transfer through a subscriber addition service change to a temporary user identification number for a subscriber's domestic telephone number. It includes the ability to generate and transmit signals.

The input call signal processing unit 61 of the roaming service server 60 includes a function of processing a call processing signal through No. 7 ISUP or ISDN PRI signaling. The call control central processing unit 62 includes a function of receiving an input call and requesting an output call, input trunk allocation, and output trunk allocation. The output call signal processing unit 63 receives an output call request from the call control central processing unit 62 and includes a function of processing an outgoing call signal using No. 7 ISUP, ISDN PRI, or VoIP signaling.

The input call voice processor 64 is responsible for trunk and voice processing for the input call. The voice signal exchanger 65 includes a function of switching an input call trunk to an output call trunk. The output call voice processor 66 is responsible for trunk and voice processing for the output call.

The present invention has been described with reference to the accompanying drawings, with reference to the preferred embodiments, but is not limited to the above embodiments, and is beyond the scope of the invention interpretable by the claims by those skilled in the art. It is obvious that many different variations are possible without this.

As described above, according to the present invention, there is no need to develop an agreement between intercommunication operators or interworking between systems and automatic roaming terminals, and provide an international mobile roaming service that does not require any modification or additional development of an existing mobile communication system. can do.

In addition, according to the present invention, it is possible to easily use a very low-cost international VoIP network or international leased network for incoming international roaming calls, which is much cheaper than the cost of the international mobile phone service and international roaming service of the existing mobile carriers Roaming services can be provided to the user.

1 is a diagram showing the configuration of a conventional international roaming service system between mobile communication providers.

2 is a view schematically showing the configuration of an international roaming service system according to an embodiment of the present invention.

3 is a flow chart showing the international roaming service subscription application and processing procedure according to an embodiment of the present invention.

4 is a flowchart illustrating a procedure in which a roaming service subscription server according to an exemplary embodiment of the present invention automatically handles a call transfer request to a CCS (customer management system) of a mobile communication service provider.

5 is a flowchart illustrating a call transfer procedure by an international roaming service system according to an exemplary embodiment of the present invention.

6 is a flowchart illustrating a process of processing an international roaming incoming call after receiving a roaming incoming call request signal from a mobile communication exchange in an international roaming service system according to an exemplary embodiment of the present invention.

7 is a block diagram schematically illustrating an international roaming service system according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: international roaming gateway system 11: international roaming billing settlement system

12a, 12b: operator billing system 13a, 13b: mobile switching center

14a, 14b: signal network

15a, 15b: SMSC (Short Message Service Center)

16a, 16b: HLR (Home Subscriber Register)

17a, 17b: AuC (Subscriber Certification Center)

18a, 18b: VMS (Voice Mailbox System)

19a, 19b: mobile communication network 19c: overseas public telephone network

20: CCS (Customer Management System) 21: International Network (VoIP or TDM)

22, 23: roaming service user terminal 24a, 24b. 24c: communication terminal

30: roaming service system 40: roaming service subscription server

50: roaming information database server 60: roaming service server

Claims (4)

A method of providing an international roaming call service in a roaming service system including a roaming service subscription server and a roaming information database server and coupled to a first exchange in a domestic mobile communication network and a second exchange in a foreign mobile communication network, Receiving international roaming application information by the roaming service subscription server, wherein the international roaming application information includes at least a domestic user telephone number, an overseas user telephone number, and user information; Assigning a temporary user identification number in correspondence with the international roaming application information, wherein the temporary user identification number includes an international roaming service provider identification number and a temporary subscriber identification number; Registering the international roaming application information and the temporary user identification number with the roaming information database server; Transmitting a call transfer request request signal for the domestic user telephone number to a customer management system coupled to the first exchange, wherein the call transfer request signal includes at least a domestic user telephone number and a temporary user identification number, A customer management system sends a signal to a home location register coupled to the first exchange to change subscriber supplementary service information corresponding to the domestic user telephone number; Receiving a call transfer request response signal from the customer management system by the roaming service subscription server; Receiving an outgoing request signal from the first exchange, wherein the first exchange receives a call connection request signal from an originating terminal, requests a called subscriber routing information from the home location register, and then receives a temporary user from the home location register. Receive called subscriber routing information including an identification number and select a relay route of an international roaming service provider corresponding to the temporary subscriber identification number from the temporary user identification number; Retrieving a roaming information database server from an overseas user telephone number corresponding to the temporary subscriber identification number; Transmitting a call connection request signal to the second exchange through an international network combining the first and second exchanges, wherein the call connection request signal corresponds to at least an originating identifier corresponding to the originating terminal and a foreign terminating terminal; Includes international user phone numbers; Transmitting a call progress signal to the first exchange; And Receiving a call setup signal from the second exchange Including but not limited to: And the calling terminal makes a call with the overseas called terminal using the channel set by the call. The method of claim 1, Receiving the international roaming request information by the roaming service subscription server is performed through the Web (Web), automatic response service (ARS) or IVR (Interactive Voice Response) Featuring international roaming incoming call service method. The method of claim 1, The international network is an international VoIP network or an international leased network. International roaming incoming call service method characterized in that. A roaming service system coupled to at least a first exchange in a domestic mobile communication network and a second exchange in a foreign mobile communication network to provide an international roaming incoming call service, A roaming service subscription server having a web interface or an interactive voice response (IVR) interface; A roaming information database server coupled to the roaming service subscription server; And Roaming service server coupled to the roaming service subscription server and the roaming information database server, The roaming service subscription server receives international roaming application information, wherein the international roaming application information includes at least a domestic user telephone number, an overseas user telephone number, and user information, and identifies a temporary user corresponding to the international roaming application information. Assign a number, wherein the temporary user identification number includes an international roaming service provider identification number and a temporary subscriber identification number, register the international roaming application information and the temporary user identification number with the roaming information database server, and Send a call transfer request request signal for the domestic user telephone number to a customer management system coupled to a first exchange, where the call transfer request request signal includes at least a domestic user telephone number and a temporary user identification number; The system is a subscriber corresponding to the domestic user telephone number. Transmitting a signal for changing supplementary service information to a home location register coupled to the first exchange, receiving a call transfer request response signal from the customer management system, The roaming service server receives an outgoing request signal from the first exchange, where the first exchange receives a call connection request signal from an originating terminal, requests a called subscriber routing information from the home location register, and then returns to a home location. Receiving incoming subscriber routing information including a temporary user identification number from a registrar, and selecting a relay route of an international roaming service provider corresponding to the temporary subscriber identification number among the temporary user identification numbers, the overseas corresponding to the temporary subscriber identification number Retrieve a user's telephone number from the roaming information database server and transmit a call connection request signal to the second exchange through an international network combining the first and second exchanges, where the call connection request signal is at least the originating terminal; Calling identifier corresponding to and the overseas user's telephone number corresponding to the overseas called terminal Including a call, transmitting a call progress signal to the first exchange and receiving a call setup signal from the second exchange, And the originating terminal makes a call with the overseas called terminal using the channel set by the call.