KR101256981B1 - Mobile Communication System, Location Register Method and Call processing Method for In-Bound Roaming Service - Google Patents

Abstract

A mobile communication system, a location registration method, and a call processing method for an inbound roaming service are disclosed. When the CAMEL Phase specification information of the visited network and the home network is different from each other, the mobile communication system searches the home location register of the home network according to the location registration request of the inbound roaming terminal and specifies the CAMEL (Customized Applications for Mobile.Network Enhanced Logic) phase specification of the home network. Intelligent network call processing for the service control device and the inbound roaming terminal that generate and store the intelligent network subscriber information corresponding to the inbound roaming terminal by using the gateway location register to obtain the service type information of the inbound roaming terminal including the information It includes an exchange that sets the service control device.

Description

Mobile communication system, location register method and call processing method for inbound roaming service {Mobile Communication System, Location Register Method and Call processing Method for In-Bound Roaming Service}

The present invention relates to a mobile communication system, and more particularly, to a mobile communication system, a location registration method and a call processing method for an inbound roaming service of a prepaid subscriber.

As the number of prepaid subscribers is increasing globally, there is a need for the ability to support prepaid subscribers even when roaming. In the case of WCDMA networks, in order to provide roaming services to prepaid subscribers, the visited and home networks use real-time billing for prepaid subscribers through the CAP (Customized Applications for Mobile.Network Enhanced Logic (CAPEL) Application Part) protocol defined in the 3GPP standard. Support processing If the CAMEL Phase specifications supported by the visited network and the home network are different from each other, the visited network and the home network cannot recognize each other's CAP message because the format of the CAP message is different.

For example, most of the prepaid rate providers worldwide use CAMEL Phase 1 and 2, some countries use CAMEL Phase 3, and very few use CAMEL Phase 4. Domestic operators are using CAMEL Phase 3.

Therefore, operators supporting CAMEL Phase 3 or 4 have a problem in that it is difficult to accommodate in-bound roaming subscribers roaming in a network supporting CAMEL Phase 1 and 2, which are used by most operators worldwide.

The present invention is to provide an inbound roaming service to a prepaid subscriber that the CAMEL Phase roams from another network.

According to an aspect of the present invention, a mobile communication system for providing a prepaid roaming service is disclosed.

In the mobile communication system according to an embodiment of the present invention, when the intelligent network message specification information of the visited network and the home network is different from each other, the intelligent network message specification information of the home network is inquired by querying the home location register of the home network according to the location registration request of the inbound roaming terminal. A gateway location register for acquiring service type information of the inbound roaming terminal, a service control device for generating and storing intelligent network subscriber information corresponding to the inbound roaming terminal using the service type information, and for the inbound roaming terminal. And a switch for setting intelligent network call processing to the service control device.

According to another aspect of the present invention, when the intelligent network message specification information of the visited network and the home network is different from each other, a method of registering a location of an inbound roaming terminal is disclosed.

In the location registration method according to an embodiment of the present invention, the gateway location register service queries the home location register of the home network according to the location registration request of the inbound roaming terminal and includes the intelligent network message specification information of the home network. Acquiring type information; generating, by the visited network service control apparatus, intelligent network subscriber information corresponding to the inbound roaming terminal using the service type information; and home network service control including the gateway location register included in the service type information. Modifying the service type information by changing the address information of the device to the address information of the visited network service control device; and the visited network exchange using the modified service type information to perform intelligent network call processing for the inbound roaming terminal. Installed as a visit network service control device And a step of.

According to another aspect of the present invention, when the intelligent network message specification information of the visited network and the home network is different, a call processing method of an inbound roaming terminal is disclosed.

In a call processing method according to an embodiment of the present invention, the visited network exchange receives a call request from the inbound roaming terminal, and the visited network switch transmits an intelligent network service request message to the visited network service control device according to the call request. And modifying the intelligent network service request message into a format of the intelligent network message specification information of the home network included in the service type information acquired at the time of registering a location, and transmitting the intelligent network service request message to a home network service control device. .

The present invention can provide an inbound roaming service to a prepaid subscriber whose CAMEL Phase roams from another network.

In addition, the present invention is implemented through the SCP (Service Control Point) and GLR (Gateway Location Register), it is not necessary to develop additional equipment.

1 is a configuration diagram schematically illustrating a configuration of a mobile communication system for providing a roaming service.
2 is a flowchart illustrating a location registration method of an inbound roaming terminal;
3 is a flowchart illustrating a call processing method of an inbound roaming terminal.

The present invention may be variously modified and have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In addition, numerals used in the description of the present invention are merely an identifier for distinguishing one component from another.

Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the same reference numerals will be used for the same means regardless of the reference numerals in order to facilitate the overall understanding.

1 is a configuration diagram schematically illustrating a configuration of a mobile communication system providing a roaming service.

Referring to FIG. 1, a mobile communication system is divided into a visited network 100 and a home network 200. In the following description, the visited network 100 may be a communication network of an inbound roaming subscriber using a roaming service, and the home network 200 may be an overseas third party network to which an inbound roaming subscriber subscribes to a communication service.

The visited network 100 includes an inbound roaming terminal 110, a visited network switch (MSC: Mobile service Switching Center (MSC) 120), a gateway location register (hereinafter referred to as a GLR) 130 ) And a visited network service control device (SCP) (hereinafter referred to as SCP) 140.

The inbound roaming terminal 110 is a terminal that is connected to a mobile communication network to perform incoming and outgoing functions of voice calls. For example, the inbound roaming terminal 110 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.

Also, the inbound roaming terminal 110 is a terminal of a prepaid subscriber who subscribes to a prepaid service in the home network 200.

The visited network MSC 120 performs basic and additional service processing, incoming and outgoing call processing of subscribers, location registration and handoff procedures, and interworking with other networks. Here, the other network may be a PSTN, an intelligent network, or the like.

When the visited network MSC 120 receives a location registration request from the inbound roaming terminal 110, the visited network MSC 120 may transmit a location registration request message including intelligent network message specification information supported by the visited network 100 to the GLR 130. For example, the intelligent network message may be a CAMEL (Customized Applications for Mobile. Network Enhanced Logic (APPEL) Application Part) message, and the intelligent network message specification information may be CAMEL phase specification information. Hereinafter, for convenience and understanding of the description, the description will be made assuming that the intelligent network message is a CAP message and the intelligent network message specification information is CAMEL phase standard information.

When the location registration is requested for the inbound roaming terminal 110 through the visited network MSC 120, the GLR 130 inquires about the HLR 240 of the home network 200 to obtain subscriber information about the inbound roaming terminal 110. Acquire and transmit to the visited network MSC (120).

When the location is registered, the GLR 130 checks the CAMEL Phase specification information of the operator by using the operator information (preset and stored during the roaming agreement) of the network (home network 200) to which the inbound roaming terminal 110 is subscribed. Then, the location registration request message including the CAMEL Phase specification information is transmitted to the HLR 240 of the home network 200. Subsequently, the GLR 130 may obtain subscriber information including service type information from the HLR 240. Here, the service type information may include information indicating that the inbound roaming terminal 110 is subscribed to a prepaid service, CAMEL Phase specification information of the home network 200, address information to the home network SCP 250, and the like.

For example, the GLR 130 may manage service provider information for each roaming network operator and service provider information for IMSI (International Mobile Subscriber Identity). Here, the operator information for each network operator may include a carrier identification ID, whether CAMEL roaming is allowed for the inbound roaming subscriber, and CAMEL Phase specification information supported by the operator. Here, whether to allow CAMEL roaming may be set in advance when the roaming agreement is different as the CAMEL phase between operators is different. IMSI-specific carrier information may include a country code, network code and carrier identification ID. The GLR 130 may extract the operator identification ID by using the subscriber's IMSI included in the location registration request message received from the visited network MSC 120, and check whether the operator permits CAMEL roaming. Subsequently, when CAMEL roaming is allowed, the GLR 130 may transmit a location registration request message including the CAMEL Phase specification information supported by the corresponding operator to the HLR 240.

Thereafter, the GLR 130 temporarily stores the service type information obtained from the HLR 240 and makes an intelligent network subscriber generation request to the visited network SCP 140. At this time, the GLR 130 transmits the service type information to the visited network SCP (140).

The GLR 130 receives a response including the address information to the visited network SCP 140 from the visited network SCP 140 and modifies the service type information. For example, the GLR 130 transmits the CAMEL Phase specification information of the home network 200 and the address information of the home network SCP 250 from the service type information, respectively, to the CAMEL Phase specification information and the visited network SCP 140 of the visited network 100. Can be modified with the address information of the.

Subsequently, the GLR 130 transmits subscriber information including the modified service type information to the visited network MSC 120. Accordingly, the visited network MSC 120 may transmit the intelligent network call to the visited network SCP 140 in response to the call request from the inbound roaming terminal 110.

Visiting network SCP (140) is a SCP located in the visited network 100, a device for managing the intelligent network service subscribers, and performs the service logic. For this purpose, the visited network SCP 140 manages the profile of the intelligent network service subscriber or a related database.

When the visiting network SCP 140 registers a location with respect to the inbound roaming terminal 110, it receives an intelligent network subscriber generation request from the GLR 130 for the inbound roaming terminal 110 and generates an intelligent network subscriber. At this time, the visited network SCP 140 receives the service type information obtained by the GLR 130 from the HLR 240, and generates and stores intelligent network subscriber information using the service type information. For example, the visited network SCP 140 may generate and store intelligent network subscriber information including IMSI, CAMEL roaming permission, CAMEL Phase specification information of the home network 200, and address information to the home network SCP 250. Here, whether to allow CAMEL roaming may be set to allow CAMEL roaming as the CAMEL Phase between operators is different.

In addition, the visited network SCP 140 transmits its address information to the GLR 130 in response to the intelligent network subscriber creation request. Through this, when an intelligent network call is transmitted, the intelligent network call may be transmitted to the home network SCP 250 via the visiting network SCP 140.

When the visiting network SCP 140 receives a call from the inbound roaming terminal 110 and requests the intelligent network service from the visiting network MSC 120, the visiting network MSC 120 and the home network according to the CAMEL roaming permission set due to the different CAMEL phase Intelligent network call processing is relayed between SCPs (250). Here, the visited network SCP 140 modifies and relays the CAP message transmitted and received between the MSC 120 and the home network SCP 250 to a format according to the CAMEL Phase standard of the visited network 100 or the home network 200.

For example, when the visited network SCP 140 receives an intelligent network service request message from the visited network MSC 120 in response to a request from the inbound roaming terminal 110, the visited network SCP 140 sends the intelligent network service request message to the CAMEL phase of the home network 200. It can be modified to the format corresponding to the home network SCP (250). Here, the intelligent network service request message may be an initial detection point (IDP) message.

In addition, the visiting network SCP 140 converts a BCSM Report Request Basic Message (RRB) or BCSM Event Report BCSM (ERB) into a format corresponding to the CAMEL Phase specification of the network. It can be modified and relayed.

As described above, the CAP message relayed by the visited network SCP 140 is described as an IDP message, a BCSM report request message, and a BCSM event report message by way of example, but is not limited thereto. That is, the CAP messages applied vary as shown in Table 1 below. Visiting network SCP 140 may play a role in matching different CAP message formats according to CAMEL Phase specification for various CAP messages.

Operation Name Overseas Section Domestic section Phase 1 Phase 2 Phase 3 One InitialDP ○ ○ ○ 2 AssistRequestInstructions (IP) ○ ○ 3 establishTemporaryConnection (IP) ○ ○ 4 disconnectForwardConnection (IP) ○ ○ 5 connectToResource (IP) ○ ○ 6 connect ○ ○ ○ 7 releaseCall ○ ○ ○ 8 eventReportBCSM ○ ○ ○ 9 requestReportBCSMEvent ○ ○ ○ 10 continue ○ ○ ○ 11 resetTimer ○ ○ 12 furnishChargingInformation ○ ○ 13 applyChargingReport ○ ○ 14 applyCharging ○ ○ 15 callInformationReport ○ ○ 16 callInformationRequest ○ ○ 17 sendChargingInformation ○ ○ 18 specializedResourceReport (IP) ○ ○ 19 playAnnouncement (IP) ○ ○ 20 promptAndCollectUserInformation (IP) ○ ○ 21 cancel ○ ○ 22 activityTest ○ ○ ○

When the inbound roaming terminal 110 requesting an outgoing call is allowed for CAMEL roaming, the visiting network SCP 140 determines whether there is a specialized service contracted with an operator of the home network 200 and processes the specialized service if present.

For example, the visited network SCP 140 may manage the specialized service information previously agreed with the operator of the home network 200.

For example, the specialized service may be a customer center access service to the customer center of the home network 200 operator. The inbound roaming terminal 110 may try to access the customer center of the home network 200 operator by receiving the customer center access number. The customer center access number is a number through which the subscriber can access the customer center through the home network 200 before roaming, and does not include an identification number such as a country code. Visiting network SCP (140) checks the customer center access service through the customer center access number when the home network 200 operator and the customer center access service is agreed, and relays the intelligent network service request message to the home network SCP (250) The specialized service can be processed.

The home network 200 is called terminal 210, home network MSC 220, gateway switch (GMSC: gateway mobile switching center, GMSC) 230, Home Location Register (hereinafter referred to as HLR) (240) and home network SCP (250).

The called terminal 210 is a terminal that is connected to a mobile communication network to perform incoming and outgoing functions of voice calls. For example, the destination terminal 210 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.

The called terminal 210 is a terminal to which the inbound roaming terminal 110 requests a communication call.

The home network MSC 220 performs basic and additional service processing, incoming and outgoing call processing of subscribers, location registration procedure and handoff procedure processing, and interworking with other networks. Here, the other network may be a PSTN, an intelligent network, or the like.

The home network MSC 220 may perform a call connection with the called terminal 210 according to the communication call request of the inbound roaming terminal 110.

GMSC 230 is another form of exchange (MSC), and performs a gateway function between two networks. The inbound roaming terminal 110 of the visited network 100 may be connected to a communication call with the destination terminal 210 through the visited network MSC 120, the GMSC 230, and the home network MSC 220.

The HLR 240 generally stores a variety of information (eg, subscriber information) about a subscriber as a master database of a subscriber and performs location management for the inbound roaming terminal 110 or the called terminal 210. . For example, when the HLR 40 of the home network receives a location registration request message transmitted from the inbound roaming terminal 10 located in the visited network 100, the subscriber including the subscriber information of the inbound roaming terminal 10. An Insert Subscriber Data request message may be transmitted to the visited network MSC 120 through the GLR 130.

The HLR 240 stores service type information for each subscriber. The HLR 240 may deliver the subscriber information including the service type information to the GLR 130. That is, the HLR 240 stores subscriber information including service type information (CSI: CAMEL subscription information, CSI) for the corresponding service according to the service subscribed to the intelligent network subscriber.

For example, if the service subscribed to the intelligent network subscriber is an outgoing service, O-CSI may be used, if the incoming service is T-CSI, and if the service is a short message, SMS-CSI may be used. The HLR 240 may support the inbound roaming terminal 110 to receive the subscribed intelligent network service by transmitting subscriber information including the corresponding CSI according to the request of the GLR 130.

For example, the GLR 130 may determine that the corresponding subscriber is a prepaid service subscriber using O-CSI included in the subscriber information received from the HLR 240. Here, the O-CSI includes information indicating that the service subscribed to by the subscriber is a prepaid service.

The home network SCP 250 is an SCP located in the home network 200 and is a device for managing an intelligent network service subscriber and performing service logic. For this purpose, the home network SCP 250 manages the profile of the intelligent network service subscriber or a related database.

The home network SCP 250 receives the intelligent network service request message transmitted from the visited network MSC 120 through the visited network SCP 140 to process the prepaid service of the inbound roaming terminal 110.

For example, the home network SCP 250 may process the prepaid service by sending and receiving a BCSM report request message or BCSM event report message with the visited network MSC 120 through the visited network SCP (140).

2 is a flowchart illustrating a location registration method of an inbound roaming terminal. In FIG. 2, when the visited network 100 and the home network 200 have different CAMEL Phase specifications, a location registration method for providing a prepaid service to the inbound roaming terminal 110 will be described. In the following description, it is assumed that the visited network 100 uses CAMEL Phase 3 and the home network 200 uses CAMEL Phase 1 for convenience of understanding and explanation.

In step S205, the inbound roaming terminal 110 makes a location registration request to the visited network MSC (120).

In step S210, the visited network MSC 120 transmits a location registration request message to the GLR 130 according to the location registration request of the inbound roaming terminal 110. Here, the location registration request message may be a MAP message and may be a MAP_Update Location message.

The location registration request message may include CAMEL Phase specification information. Here, the CAMEL Phase specification information may be CAMEL Phase 3 used by the visited network 100.

In step S215, the GLR 130 checks the CAMEL Phase specification information of the home network 200 operator to which the inbound roaming terminal 110 is subscribed. For example, the GLR 130 is a CAMEL roaming permission and the CAMEL Phase 1 used by the home network 200 as the CAMEL phase between the visited network 100 and the home network 200 is different from each other in the roaming contract operator information. can confirm.

In step S220, the GLR 130 transmits a location registration request message to the HLR 240. Here, the location registration request message may include CAMEL Phase specification information set to CAMEL Phase 1.

In step S225, the HLR 240 transmits a subscriber information insertion request message including subscriber information of the inbound roaming terminal 110 to the GLR 130. The subscriber information includes service type information. Here, the service type information may include information indicating that the inbound roaming terminal 110 is subscribed to a prepaid service, CAMEL Phase specification information (CAMEL Phase 1) of the home network 200, address information to the home network SCP 250, and the like. Can be.

In step S230, the GLR 130 checks whether the CAMEL Phase specification information included in the service type information and the CAMEL Phase specification information included in the location registration request message transmitted in step S220 match, and inserts the subscriber information insertion response message into an HLR ( 240).

In step S235, the HLR 240 transmits the location registration response message to the GLR 130 according to the reception of the subscriber information insertion response message.

In step S240, the GLR 130 stores service type information.

In step S240, the GLR 130 transmits the intelligent network subscriber generation request message including the service type information to the visited network SCP (140).

In step S250, the visited network SCP 140 generates an intelligent network subscriber in response to the intelligent network subscriber creation request message. The visited network SCP 140 generates the intelligent network subscriber information using the service type information.

In step S255, the visited network SCP 140 transmits the intelligent network subscriber generation response message to the GLR 130 according to the intelligent network subscriber generation. The intelligent network subscriber generated response message includes the address information of the visited network SCP 140. For example, the visited network SCP 140 may generate and store intelligent network subscriber information including IMSI, CAMEL roaming permission, CAMEL Phase specification information of the home network 200, and address information to the home network SCP 250. Here, whether to allow CAMEL roaming may be set to allow CAMEL roaming as the CAMEL Phase between operators is different.

In step S260, the GLR 130 modifies the stored service type information according to the reception of the intelligent network subscriber generation response message. For example, the GLR 130 uses the CAMEL Phase specification information (CAMEL Phase 1) of the home network 200 and the address information of the home network SCP 250 from the service type information, respectively, and the CAMEL Phase specification information (CAMEL) of the visited network 100. Phase 3) and visit network SCP (140) can be modified with address information.

In step S265, the GLR 130 transmits a subscriber information insertion request message including the modified service type information to the visited network MSC 120.

In step S270, the visited network MSC 120 sets up intelligent network call processing to the visited network SCP 140 according to the service type information included in the subscriber information insertion request message, and transmits the subscriber information insertion response message to the GLR 130. do.

In step S275, the GLR 130 transmits the location registration response message to the visited network MSC 120 according to the reception of the subscriber information insertion response message from the visited network MSC 120, and in step S275, the visited network MSC 120 ) Transmits a response message to the inbound roaming terminal 110 to the completion of the location registration.

3 is a flowchart illustrating a call processing method of an inbound roaming terminal. In FIG. 3, when the visited network 100 and the home network 200 have different CAMEL Phase specifications, a call signal processing method of the inbound roaming terminal 110 for providing a prepaid service to the inbound roaming terminal 110 will be described. Let's do it.

In step S305, the inbound roaming terminal 110 requests an outgoing call to the visited network MSC 120 to connect the communication call to the destination terminal 210.

In step S310, the visited network MSC 120 transmits the intelligent network service request message to the visited network SCP 140 according to the intelligent network call processing set in correspondence with the originating signal of the inbound roaming terminal 110. The intelligent network service request message is a CAP message and may be an IDP message. For example, the intelligent network service request message may be generated in the format of CAMEL Phase 3, which is a CAMEL Phase standard of the visited network 100.

In step S315, the visited network SCP 140 determines whether to allow CAMEL roaming using the intelligent network subscriber information generated when registering the location of the inbound roaming terminal 110.

If the CAMEL roaming is not allowed because the CAMEL Phase specifications of the visited network 100 and the home network 200 match, the visited network SCP 140 processes the intelligent network service as a general intelligent network subscriber.

In step S325, when the visited network SCP 140 is different from the CAMEL Phase specifications of the visited network 100 and the home network 200 and CAMEL roaming is allowed, the specialized service contracted with the operators of the home network 200 in the stored provider information. Judge whether or not.

In step S330, the visited network SCP 140 processes the specialized service, if the specialized service exists. For example, the specialized service may be a customer center access service to the customer center of the home network 200 operator. The inbound roaming terminal 110 may try to access the customer center of the home network 200 operator by receiving the customer center access number. The customer center access number is a number through which the subscriber can access the customer center through the home network 200 before roaming, and does not include an identification number such as a country code. Visiting network SCP (140) checks the customer center access service through the customer center access number when the home network 200 operator and the customer center access service is agreed, and relays the intelligent network service request message to the home network SCP (250) The specialized service can be processed.

In step S335, the visited network SCP 140 modifies the intelligent network service request message corresponding to the CAMEL Phase standard of the home network 200 as the CAMEL Phase specifications of the visited network 100 and the home network 200 are different. For example, the visited network SCP 140 may modify the intelligent network service request message from the format of CAMEL Phase 3 (standard of the visited network 100) to the format of CAMEL Phase 1 (standard of the home network 200).

In step S340, the visited network SCP 140 transmits the modified intelligent network service request message to the home network SCP (250).

In step S345, the home network SCP 250 processes the prepaid service of the inbound roaming terminal 110 according to the receipt of the intelligent network service request message.

In step S350, the home network SCP 250 transmits a BCSM report request message (RRB) to the visited network SCP 140 in accordance with the prepaid service processing. BSCM report request message is the visited network MSC (120) call state to the destination terminal 210, where the call state (Busy), Answer (No Answer), No Answer (Disconnect), etc. It is a control message that requires the event information generated according to the basic call status of to be reported to the home network SCP 250.

In step S355, the visited network SCP 140 modifies the BCSM report request message to the CAMEL Phase 3 format, and in step S360, transmits the modified BCSM report request message to the visited network MSC 120.

Thereafter, in step S365, the visited network MSC 120 requests an incoming call to the GMSC 230 of the home network 200.

In step S370, the GMSC 230, the HLR 240, the home network MSC 220, and the called terminal 210 perform an answer procedure according to the incoming call request.

In step S375, the GMSC 230 transmits an ISUP address complete message (ACM) and an ISUP response message (ANM) to the visited network MSC 120 according to the response procedure.

In operation S380, the visited network MSC 120 transmits a BSCM event report message (ERB) including time information of the completion of the response procedure according to the reception of the ISUP response message to the visited network SCP 140.

In step S385, the visited network SCP 140 modifies the BCSM event report message to the CAMEL Phase 1 format, and in step S390, sends the modified BCSM event report message to the home network SCP 250.

Then, in step S395, the inbound roaming terminal 110, the visited network MSC 120, GMSC 230, home network MSC 220 and the destination terminal 210 performs a call termination procedure.

In step S400, the visited network MSC 120 transmits a BSCM event report message (ERB) including time information when the call termination procedure is completed according to the call termination to the visited network SCP 140.

In step S405, the visited network SCP 140 modifies the BCSM event report message to the CAMEL Phase 1 format, and in step S410, transmits the modified BCSM event report message to the home network SCP 250.

In operation S415, the visited network MSC 120 generates charging data. In this case, the home network SCP 250 may calculate and deduct the prepaid fee using the BSCM event report message received from the visited network MSC 120 through the visited network SCP 140.

On the other hand, the location registration method and call processing method of the inbound roaming terminal according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various electronic means for processing information may be recorded in the storage medium. The storage medium may include program instructions, data files, data structures, etc. alone or in combination.

Program instructions to be recorded on the storage medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of software. Examples of storage media include magnetic media such as hard disks, floppy disks and magnetic tape, optical media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, magneto-optical media and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

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.

100: network
110: inbound roaming terminal
120: Visiting Network MSC
130: GLR
140: Visiting SCP
200: home network
210: called terminal
220: home network MSC
230: GMSC
240: HLR
250: home network SCP

Claims (11)

If the intelligent network message specification information of the visited network and the home network is different, the service type information of the inbound roaming terminal including the intelligent network message specification information of the home network by querying the home location register of the home network according to the location registration request of the inbound roaming terminal Gateway position register to obtain;
A service control device for generating and storing intelligent network subscriber information corresponding to the inbound roaming terminal using the service type information; And
It includes a switch for setting the intelligent network call processing for the inbound roaming terminal to the service control device,
The service control device is configured to relay the intelligent network message transmitted and received between the switch and the home network service control device in a format according to the intelligent network message specification information of the home network or the visited network according to a call request from the inbound roaming terminal. Mobile communication system, characterized in that.
delete The method of claim 1,
The intelligent network message is a CAP (Customized Applications for Mobile.Network Enhanced Logic (APPEL) Application Part) message,
The intelligent network message specification information is CAMEL Phase specification information,
The CAP message is one of an IDP (Initial Detection Point) message, BCSM Report Request Message (RRB: Basic Call State Model (BCB)), BCSM Event Report (ERB: Event Report BCSM), characterized in that the mobile communication system.
The method of claim 1,
And the service type information is a prepaid service, and further includes address information of a home network service control apparatus.
5. The method of claim 4,
The gateway location register modifies the service type information by changing the address information of the home network service control apparatus included in the service type information into the address information of the service control apparatus, and the exchange uses the modified service type information. And setting the intelligent network call processing to the service control device.
In the case where the intelligent network message specification information of the visited network and the home network is different, in the location registration method of the inbound roaming terminal,
Obtaining a service type information of the inbound roaming terminal including the intelligent network message specification information of the home network by querying a home location register of the home network according to a location registration request of the inbound roaming terminal;
Generating, by the visited network service control apparatus, intelligent network subscriber information corresponding to the inbound roaming terminal using the service type information;
Modifying the service type information by changing the address information of the home network service controller included in the service type information into the address information of the visited network service controller; And
And setting, by the visited network switch, the intelligent network call processing for the inbound roaming terminal as the visited network service control device using the modified service type information.
The method according to claim 6,
Generating intelligent network subscriber information corresponding to the inbound roaming terminal using the service type information
Transmitting, by the gateway location register, an intelligent network subscriber creation request message including the service type information to the visited network service control device;
Generating and storing the intelligent network subscriber information including the service type information by the visited network service control apparatus; And
And transmitting, by the visited network service control apparatus, an intelligent network subscriber generation response message including its own address information to the gateway location register.
In the call processing method of the inbound roaming terminal when the information of the intelligent network message specification of the visited network and the home network is different,
Receiving, by the visiting network exchange, a call from the inbound roaming terminal;
Transmitting, by the visited network switch, an intelligent network service request message to the visited network service control apparatus according to the call request; And
And the visited network service control device modifying the intelligent network service request message into a format of the intelligent network message specification information of the home network included in the service type information obtained at the time of registering a location, and transmitting the modified information to the home network service control device. .
9. The method of claim 8,
Receiving, from the home network service controller, a BCSM report request message according to a prepaid service process from the home network service controller; And
And modifying, by the visited network service control device, the BCSM report request message into a format of intelligent network message specification information of the visited network to the visited network switch.
10. The method of claim 9,
The visited network exchange performing call connection according to the call request;
Transmitting, by the visited network switch, a BCSM event report message according to the call connection to the visited network service control apparatus; And
And modifying, by the visited network service control device, the BCSM event report message according to the call connection into a format of the intelligent network message specification information of the home network and transmitting the same to the home network service control device.
The method of claim 10,
Terminating the call connection;
Transmitting, by the visited network switch, a BCSM event report message according to the termination of the call connection to the visited network service control apparatus; And
And modifying, by the visited network service control apparatus, the BCSM event report message according to the termination of the call connection into a format of the intelligent network message specification information of the home network to the home network service controller.

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