KR101667804B1 - Method for roaming service of portable terminal, and service server - Google Patents

Abstract

The present invention relates to a roaming service system and method of a mobile terminal, and a service server thereof. When receiving an international roaming request from a mobile terminal, And comparing the set rate value of the provider site information with the set rate value of the visited terminal, and blocking the location registration of the terminal when the actual traffic distribution ratio value for the visited network is greater than the set rate value for the visited network. , It is possible to control the rate of traffic allocation among a plurality of overseas companies by controlling the location registration request of the mobile terminal in consideration of the difference between the ratio of allocated traffic of a plurality of overseas businesses and the rate of being distributed in real time, By sending a list of PLMNs with priority set according to the traffic allocation ratio, Can not be done the registration process simplified the registration procedure.

Description

[0001] The present invention relates to a roaming service method for a mobile terminal,

The present invention relates to a roaming service system and method for a mobile terminal, and more particularly, to a roaming service system of a mobile terminal capable of controlling the location registration of a mobile terminal that is roaming overseas while providing an international roaming service, And a service server.

In addition to a simple voice call function, a mobile communication terminal is equipped with a built-in camera or a memory so that functions of the multimedia terminal such as digital camera shooting and MP3 music file playback are expanded. The service of the communication terminal is not limited to the communication service for voice communication, and various additional services using the multimedia function newly added to the mobile communication terminal are being developed.

Meanwhile, international roaming service is provided by using such a mobile communication terminal. This is a service provided between countries using the same frequency band (for example, CDMA, WCDMA, etc.) The communication service can be provided in other countries by using the terminal and the telephone number to be used.

In the mobile communication terminal performing the international roaming service, the PLMN (Public Land Mobile Network) information to which the subscriber subscribes and the PLMN information in which the communication terminal is last used are stored in a USIM (Universal Subscriber Identity Module) The PLMN information is extracted from the system information message, and the extracted PLMN information is compared with the last used PLMN information. If the PLMN information is not coincident, it is recognized as an international roaming And then performs the registration process for the base station of the adjacent cell using the extracted PLMN information, thereby receiving the international roaming service.

In recent years, when a mobile communication service provider requests an international roaming service from a customer of a mobile communication service provider, a request for a technique for controlling roaming traffic of a corresponding mobile communication service customer in a country where roaming is requested This is called traffic steering.

However, in the conventional international roaming service, when the mobile communication terminal requesting the location registration to request roaming service from abroad does not request the location registration through the preferred PLMN, the traffic steering technology in the roaming gateway device GLR (Gateway Location Register) refuses the location registration of the mobile communication terminal and repeats the process of guiding the mobile communication terminal to perform the registration procedure through the network of the other carriers. And it is not easy to reflect the change in the traffic allocation ratio among a plurality of overseas carriers to the mobile communication terminal.

Disclosure of Invention Technical Problem [8] The present invention has been proposed in order to solve the above-mentioned problems of the related art, and it is an object of the present invention to control the location registration of a mobile terminal by checking a visited network requesting location registration for an international roaming service, A roaming service system and method for a mobile terminal, and a service server thereof.

According to another aspect of the present invention, there is provided a roaming service system for a mobile terminal that transmits subscriber information of a mobile terminal in response to an international roaming request from a mobile terminal, A ratio of the actual traffic distribution ratio to the visited network in which the mobile terminal requests the location registration and a set ratio value of the provider portion information to the visited network by referring to the subscriber information received from the gateway location register and the gateway location register, And transmits a roaming unauthorized message to the gateway location register when the actual traffic distribution ratio value for the visited network is greater than the set ratio value for the visited network.

According to another aspect of the present invention, there is provided a service server in a roaming service system for a mobile terminal, the service server including a gateway location register, a server interface for data transmission and reception, an actual traffic distribution ratio value for a plurality of visited networks, A server storage unit for storing the received traffic information, and a server interface unit for referring to the subscriber information of the mobile terminal for receiving the international roaming service received from the gateway location register, The server control unit transmits a roaming message to the gateway location register when the actual traffic distribution ratio value for the visited network is larger than the setting ratio value for the visited network. .

In the service server in the roaming service system of the portable terminal according to the present invention, the server control unit compares the set percentage value of the service potion information with respect to a plurality of visited networks in the area where the portable terminal requests location registration and the actual traffic distribution ratio value .

In a service server in a roaming service system of a portable terminal according to the present invention, the server control unit may determine whether a visited network requesting location registration of the portable terminal is a difference between a set ratio value and an actual traffic distribution ratio value among a plurality of visited networks in the area And transmits a roaming unavailable message to the gateway location register if it is not the largest visited network.

In a service server in a roaming service system of a portable terminal of the present invention, when the visited network in which the mobile terminal requests location registration is a Forbidden Public Land Mobile Network (FPLMN), the server control unit transmits a roaming- .

In the service server in the roaming service system of the portable terminal of the present invention, the server interface unit includes an OTA (Over The Air) server and an interface for data transmission and reception, and the server storage unit further stores a PLMN list.

In the service server in the roaming service system of the portable terminal of the present invention, the server control unit extracts the PLMN list corresponding to the subscriber information and sets the first PLMN of the extracted PLMN list in an area where the mobile terminal requests location registration The ratio of the ratio of the actual traffic distribution ratio to the actual traffic distribution ratio value is the largest, and transmits the set PLMN list to the OTA server through the server interface unit.

 In the service server in the roaming service system of the portable terminal of the present invention, the server storage unit further stores a PLMN list and user personal information.

In the service server in the roaming service system of the portable terminal of the present invention, the server control unit extracts a PLMN list corresponding to subscriber information, sets a priority of the extracted PLMN list with reference to user personal information, And transmits the list to the OTA server through the server interface unit.

In the service server in the roaming service system of the portable terminal of the present invention, the server storage unit stores the visited network service information.

In the service server in the roaming service system of the portable terminal of the present invention, the server control unit transmits the visited network service information together with the set PLMN list to the OTA server through the server interface unit.

In the service server in the roaming service system of the portable terminal of the present invention, the subscriber information includes a subscriber identification number, a country code and a business code.

The service server in the roaming service system of the portable terminal of the present invention further includes a server transmission / reception unit for data transmission / reception with the administrator terminal.

In the service server in the roaming service system of the portable terminal of the present invention, the server control unit receives and stores the provider position information for a plurality of visited networks from the administrator terminal through the server transmission / reception unit.

In the service server in the roaming service system of the portable terminal of the present invention, the provider portion information may include a plurality of country identification information of a foreign country, a plurality of business entity identification information providing an international roaming service in a foreign country, And period information indicating a period of time.

According to another aspect of the present invention, there is provided a roaming service method for a mobile terminal, the service server including a receiving step of receiving subscriber information of a mobile terminal for receiving an international roaming service from a gateway location register, Comparing the actual traffic distribution ratio value of the visited network requested by the portable terminal with the location information and the setting ratio value of the provider portion information for the visited network with reference to the information, And a first transmission step of transmitting a roaming unavailable message to the mobile terminal through the gateway location register when the distribution ratio value is larger than the setting ratio value for the visited network.

In the roaming service method of a portable terminal according to the present invention, the comparison step compares the set percentage value of provider position information with respect to a plurality of visited networks in the area where the portable terminal requests location registration, and the actual traffic distribution ratio value do.

In the roaming service method of a portable terminal according to the present invention, the first transmission step may be a step in which, when the service server requests the location registration of the portable terminal from the difference between the set ratio value and the actual traffic distribution ratio value Is not the largest visited network, transmits a roaming message to the gateway location register.

A roaming service method of a mobile terminal according to the present invention is characterized in that after a receiving step, when a service server requests a location registration of a portable terminal is FPLMN, a third transmission step of transmitting a roaming message to a gateway location register And further comprising:

A roaming service method of a mobile terminal according to the present invention is characterized in that, after a first transmission step, a service server extracts a PLMN list corresponding to subscriber information, extracts a first PLMN of the extracted PLMN list in an area To the visited network having the largest difference value obtained by subtracting the actual traffic distribution ratio value from the set ratio value.

A roaming service method of a mobile terminal according to the present invention is characterized in that after a first transmission step, a service server extracts a PLMN list corresponding to subscriber information and sets a priority of a PLMN list extracted by referring to user personal information And further comprising:

The roaming service method of a mobile terminal according to the present invention is characterized by further comprising a list transmitting step of, after the setting step, transmitting a list of PLMNs set by the service server to the OTA server.

In the roaming service method of a mobile terminal according to the present invention, the list transmission step transmits visited network service information together with the PLMN list set by the service server.

According to the present invention, when requesting international roaming of a mobile terminal, it is possible to grasp the number of mobile terminals roaming in accordance with a plurality of carriers in the corresponding country in real time, The rate of traffic allocation among a plurality of overseas companies can be controlled.

Also, by transmitting a PLMN list in which a priority is set according to the traffic allocation ratio among a plurality of overseas carriers, the portable terminal can increase the convenience of the user by guiding the connection to the specific visited network without repeating the location registration procedure .

In addition, it is possible to provide stable service to the nation of the foreign country roaming by inducing the use of the network of other carriers through the steering in case of a network failure of an overseas operator.

In addition, by controlling the roaming service in conjunction with the customer database, the customer can be provided with better benefits.

1 is a configuration diagram illustrating a roaming service system of a mobile terminal according to an embodiment of the present invention.
2 is a configuration diagram illustrating a TCP / IP interface protocol message structure for subscriber information transmitted from a gateway location register to a service server according to an exemplary embodiment of the present invention.
3 is a configuration diagram illustrating a PLMN list according to an embodiment of the present invention.
4 is a diagram illustrating a screen for setting provider's portion information in a service server in an administrator terminal according to an exemplary embodiment of the present invention. .
FIG. 5 is a view illustrating a screen in which status information of an international roaming service according to an exemplary embodiment of the present invention is output.
6 is a configuration diagram illustrating a service server according to an embodiment of the present invention.
7 is a configuration diagram illustrating a roaming sub-table according to another embodiment of the present invention.
8 is a flowchart illustrating a roaming service method of a mobile terminal according to an embodiment of the present invention.
FIG. 9 is a flowchart illustrating a roaming service method of a mobile terminal according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention. The same reference numerals are used for portions having similar functions and functions throughout the drawings.

It is to be appreciated that where one element is referred to herein as " transmitting " data or a signal to another element, it may directly transmit data or signals and may transmit data or signals through at least one other element it means.

1 is a configuration diagram illustrating a roaming service system of a mobile terminal according to an embodiment of the present invention.

1, a roaming service system of a mobile terminal according to the present invention includes a mobile terminal 11, a visited network 13, a home location register (HLR) 17, a gateway location register 19, Service server 20 and may further include a USIM Card Management System (UCMS) server 31, an Over The Air (OTA) server 33, and an administrator terminal 37.

The portable terminal 11 includes a USIM and is a portable terminal capable of wireless mobile communication such as a mobile phone and a PDA (Personal Digital Assistants). In addition, the portable terminal 11 can be a general wireless terminal capable of uploading and downloading packets as well as voice calls.

The portable terminal 11 of the present embodiment transmits a request signal to a visited network 13 when receiving an international roaming service from abroad and upon receiving a roaming rejection message for a roaming request, The roaming request signal is retransmitted.

Upon receiving the message including the PLMN list from the visited network 13, the message can be delivered to the USIM. The USIM is a universal subscriber identity module that can store information of the user of the portable terminal 11 such as communication carrier information, user password, roaming information, telephone number of the portable terminal 11, The PLMN list transmitted through the PLMN 13 may be stored in the internal memory.

The visited network 13 plays a role of ensuring the mobility of the portable terminal 11 and includes a base station, a base station controller and an exchange, and supports both synchronous and asynchronous types. In addition, the visited network 13 is not limited to the CDMA network, the GSM network other than the W-CDMA network, and the fourth generation, and may include a communication network of all mobile communication systems to be realized in the future.

Here, in the case of a synchronous wireless communication network, a base station that receives and transmits a wireless communication signal of the portable terminal 11 controls a base transceiver station (BTS) and a base station controller that performs communication with an exchange, In case of an asynchronous wireless communication network, a base station that receives and transmits a wireless communication signal of the mobile terminal 11 controls a node B and a node B, and a base station controller that performs communication with an exchange is an RNC (Radio Network Controller).

In addition, an exchange is a general mobile communication exchange and constitutes an access point for user traffic with another exchange. That is, the exchange performs call processing, basic and supplementary service processing, location registration procedure and handover procedure processing of the mobile terminal 11, interworking with other networks, and the like. The ASS (Access Switching subsystem), INS (Interconnection Network Subsystem) for centralized call processing function, Central Control Subsystem (CCS) for centralizing operation and maintenance, LRS Location Registration Subsystem).

The visiting network 13 of the present embodiment requests the location registration of the portable terminal 11 by the gateway location register 19 when receiving the overseas roaming request signal from the portable terminal 11, Upon receiving the location registration failure message or the location registration completion message for the visited network 13 of the mobile terminal 11, the mobile terminal 11 transmits the location registration failure message or the location registration completion message.

In addition, upon receiving an FSM (ForwardSM message) including a PLMN list from the gateway location register 19, a Short Message Service (SMSC) (short message service center, not shown) It is possible to transmit such a short message to the portable terminal 11.

The home location register 17 stores the subscriber's terminal information, subscription information, and the like, receives location information, performs registration registration, registration deletion, location confirmation, and authentication functions. In addition, the home location register 17 may include a subscriber information management device that manages the subscriber's supplementary service information in the form of a database when implemented in a wired communication service. The home location register 17 for the mobile communication service and the subscriber information management device for the wired communication service function as a database for the subscriber's additional service information. The home location register 17 of the present embodiment receives the location registration message from the gateway location register 19 and transmits the corresponding International Subscriber Dialing (ISD) information to the gateway location register 19.

The gateway location register 19 includes a gateway location register (GLR), a roaming traffic direction (RTD), and the like. The gateway location register 19 is responsible for a call connection and various data transmission and reception for the international roaming service. And performs signaling conversion, MAP protocol conversion, subscriber identity and supplementary service mapping, and the like for providing an international roaming service with a foreign carrier communication network to be used. In this case, the RTD is a technique for restricting the registration of a business that is not affiliated with an operator. In case of roaming to a specific country, when there is a communication network registration request of an unaffiliated communication service provider other than a communication network of an affiliated communication service provider, It is possible to perform a function of disallowing registration of a communication network of a non-affiliated communication network until it is roamed to the communication network of the business operator.

In this case, the GLR of the gateway location register 19 uses a TCP / IP socket connection and operates as a server with the service server 20. The service server 20 operates as a client, and each TCP / It provides the port number required for IP socket connection.

The gateway location register 19 of the present embodiment requests the location registration of the portable terminal 11 from the visited network 13 and transmits the subscriber information of the portable terminal 11 requesting location registration to the service server 20 send. At this time, the gateway location register 19 extracts subscriber information by referring to a location registration request message (UP) received from the mobile terminal 11 via the visited network 13, and transmits the extracted subscriber information to the service server 20 have. For example, it can be confirmed from the global title (GT) information of the location registration request message. The global title information is address information used in the SCCP (Signaling Connection Control Part) protocol for routing of signaling messages, and is an identification code uniquely set for each communication network of each provider. More specifically, the global title information is formed by combining a code representing a country and a code representing the visited network.

Upon receipt of the roaming unavailable message from the service server 20 to the mobile terminal 11, the mobile terminal 11 transmits a location registration failure message such as 'UL NACK' to the mobile terminal 11 through the visited network 13 . On the other hand, upon receiving the roaming allowance message for the mobile terminal 11 from the service server 20, the mobile terminal 11 transmits the location registration message to the home location register 17, and receives the ISD information transmitted from the home location register 17 (For example, IMSI / MSISDN pair) of the portable terminal 11 by registering and managing the subscriber information.

2 is a block diagram illustrating a TCP / IP interface protocol message structure for subscriber information transmitted from the gateway location register 19 to the service server 20 according to an exemplary embodiment of the present invention. Referring to FIG. 2, The subscriber information between the GLR of the gateway location register 19 and the service server 20 is composed of a message header and a message body.

The message header includes a 'message version ID' indicating a version of the currently used message format, 'Linked ID' as an unsigned integer variable, a control message such as connection, release, check, A message type, which is an unsigned integer variable for distinguishing service request and response messages, a service ID, an unsigned integer variable, a node for sending and receiving a message to distinguish a system providing a mobile communication service by function 'Context ID', which is an unsigned integer variable, is a number assigned to each message, 'Subsystem' for identifying a message, 'Operation Code' for identifying a type of a message, 'Prefix' 'Source ID' indicating the system transmitting the message, 'Time Stamp', an unsigned integer variable indicating the system time in seconds in which the message is called, Recorded and a "Message Length" of an unsigned integer type variable containing the length of the body region.

The message body includes a 'User ID' which is an identification number of a subscriber, 'CC' which is a country code of a corresponding area where a portable terminal 11 requests a location registration, VC ', which is a Vendor Code for a service provider operating the service provider 13, is provided as a VLR number or Serving GPRS Supporting Node (SGSN) number, 'UserID' may be provided as MSISDN (Mobile Station ISDN) information, but is not limited thereto.

In particular, 'message type' is used together with 'Operation Code' when a message is transmitted from the gateway location register 19 to the service server 20, and the service server 20 registers the subscriber's overseas roaming, And the 'Operation Code' is used to update the subscriber information in case of overseas roaming registration, overseas roaming deletion, and the like. Items of 'Linked ID', 'Service ID', 'Prefix' and 'NPA' may not be included in the message transmitted between the gateway location register 19 and the service server 20.

In addition, the gateway location register 19 performs a roaming function to another communication network by interworking with a signal roaming network, for example, a signaling transfer point (STP) for interworking communication services between a certain communication network and another communication network, It is possible to perform the call connection and the transmission / reception of various data during the incoming exchange period.

The service server 20 stores information on a provider portion for a plurality of overseas visited networks 13 and receives subscriber information of the portable terminal 11 transmitted from the gateway location register 19, A server that determines whether to allow roaming of the portable terminal 11 by comparing the actual traffic distribution ratio value of the plurality of visited networks 13 with the provider potion information.

The actual traffic distribution ratio value may be a value obtained by multiplying the number of all mobile terminals 11 that are roaming in a given area by the number of operators providing a roaming service within a specific area of a foreign country, 13 to the number of mobile terminals 11 that are provided with roaming service.

The provider potion information is information indicating a share allocated in advance to the roaming traffic to a plurality of operators operating the foreign network 13. At this time, the provider's position information includes the policy item 'Policy' for each policy, 'Country', which is an identification item for a plurality of countries overseas, 'Vendor', a vendor identification item for providing an international roaming service in the country, Quot; setting rate value ", which assigns traffic to the visited network 13 operated by the terminal, and " Term " At this time, although the region where the portable terminal 11 requests roaming is classified as a country in the foreign country, when the same operator operates the visiting network 13 between adjacent countries, the same PLMN list can be used, Groups can be grouped by country.

More specifically, when the service server 20 receives the subscriber information from the gateway location register 19, the service server 20 checks the subscriber information of the country where the mobile terminal 11 requests the location registration and the visited network 13, The actual traffic distribution ratio value for the visited network 13 requesting the location registration is compared with the setting ratio value for the visited network 13 included in the provider portion information. The service server 20 transmits a roaming unavailable message to the gateway location register 19 when the actual traffic distribution ratio value for the visited network 13 is greater than the setting ratio value for the visited network 13. [

The gateway location register 19 that has received the roaming unauthorized message transmits a location registration failure message to the mobile terminal 11 via the visited network 13 and then the mobile terminal 11 transmits the location registration failure message to another visited network 13), and it is possible to maintain the traffic setting ratio value per provider in the country constant through the above-described process.

In another embodiment of the present invention, the service server 20 may roam to the gateway location register 19 if the actual traffic share ratio value for the visited network 13 is greater than the set ratio value for the visited network 13 Extracts a PLMN list corresponding to the subscriber information of the mobile terminal 11 and transmits the first PLMN to the mobile terminal 11 in the country where the mobile terminal 11 requests the location registration, Can be set to the visited network 13 having the largest difference value minus the value.

By setting the first PLMN, that is, the PLMN list, to the highest visited network 13 having the largest difference value obtained by subtracting the actual traffic distribution ratio value from the traffic setting ratio value in the country where the mobile terminal 11 requests the location registration, The mobile terminal 11 that has received the first PLMN performs the roaming using the first PLMN, so that the roaming traffic of the mobile terminal 11 can be more efficiently controlled.

The PLMN list indicates a list of the visited network 13 in which the mobile terminal 11 can receive roaming services from abroad.

Referring to FIG. 3, the PLMN list includes a PLMN list group identification item 'GroupID' that matches a plurality of countries or country groups, and a group ID PLMN_NUM 'of the registered PLMN list,' MCC (Mobile Country Code) of the first PLMN + PLMNXXX '(Mobile Network Code) and' ATI (Access Technology Identifier) of the first PLMN ' Quot; PLMNXXXATI ". That is, the service server 20 stores the items 'PLMNXXX' and 'PLMNXXXATI' in the PLMN list as the difference value obtained by subtracting the actual traffic distribution ratio value from the traffic setting ratio value within the country where the mobile terminal 11 requests location registration The information about the large visited network 13 is changed and set.

Thereafter, the service server 20 can transmit the newly set PLMN list to the OTA server 33. [ At this time, the service server 20 formats data in an APDU (Application Protocol Data Unit) format for data communication with the USIM module, and transmits the data to the OTA server 33. In addition, when formatting the data, the UCMS server 31 to inquire the card key of the USIM card, and can perform the data format using the SP (Security Policy) method.

The UCMS server 31 stores USIM profile information such as International Mobile Subscriber Identification (IMSI) of the subscriber and identification information of a terminal such as MSISDN (Mobile Station International ISDN Number), and transmits the USIM profile to the service server 20 And performs synchronization function.

The OTA server 33 performs an SMS format to transmit the list of PLMNs received from the service server 20 to the mobile terminal 11 through the SMS method and then visits the FSM (Foward SMS message) message including the PLMN list To the network (13).

When the portable terminal 11 requests the location registration again, the portable terminal 11 can perform the location registration process using the PLMN list received from the OTA server 33 through the visited network 13. Specifically, the portable terminal 11 extracts PLMN information from the system information message acquired from the base station of the neighboring cell, and when the extracted PLMN information matches the received PLMN list, performs registration processing for the base station of the corresponding cell do. At this time, whether or not the extracted PLMN information matches the PLMN list is determined according to the priority determined by the service server 20.

The administrator terminal 37 is a computer capable of transmitting and receiving data with the service server 20 using a network (not shown), a notebook computer, a workstation, a PDA (personal digital assistant), a portable multimedia player (PMP) player, a mobile communication terminal, and the like. At this time, the intermediary network connecting the service server 20 and the administrator terminal 37 may be a virtual private network (VPN), the Internet, an intranet, an extranet, or other widely known or later developed wired, Lt; / RTI > network.

The administrator terminal 37 of this embodiment transmits and sets the service provider information on the plurality of overseas visited networks 13 providing the international roaming service to the service server 20 and sets the status information of the international roaming service to the service server 20. [ (20) and output it.

4 is a diagram illustrating a screen for setting provider position information in the service server 20 in the administrator terminal 37 according to an exemplary embodiment of the present invention. Referring to FIG. 4, 'Policy', 'Country', 'Vendor', 'Setting ratio value', and 'Term' can be input as items of the potion information. In this case, if the 'Default' item is checked, the 'Term' item can not be input. If the specific policy is not set when the mobile terminal 11 requests the roaming, Value. Also, if the set rate value of the visited network 13 is input as 0, the visited network 13 of the corresponding provider is registered as FPLMN (Forbidden PLMN).

Since the international roaming service manager can modify the registered service provider information, the policy is already activated and applied to the international roaming service within the period in which the policy is applied, It is possible to set the policy so that it can not be modified, and also the warning message may be output so that the international roaming service manager can recognize the policy.

In addition, for each policy, it is possible to update the PLMN list previously stored in the USIM of the portable terminal 11 or to download the FPLMN when transmitting the PLMN list to the portable terminal 11.

The status information of the international roaming service is information indicating the status of a plurality of portable terminals 11 receiving international roaming service from abroad.

5 is a view illustrating an example of a screen displaying status information of the international roaming service according to an exemplary embodiment of the present invention. Referring to FIG. 5, the screen displaying the status information of the international roaming service includes: 'Active' which is the item indicating the current policy applied to each country, 'Total' which indicates the number of mobile terminals 11 currently roaming in each country, and 'International' "Portion", which is an item indicating a setting ratio value assigned to each provider, and "Portion", which is an item indicating the number of mobile terminals 11 roaming through the visited network 13 'Count', 'Actual' which is the item indicating the actual traffic distribution ratio value for each business entity, and 'Deviation' which indicates the difference between the actual traffic distribution ratio value and the setting ratio value for each business can do. At this time, 'Try', which is an item indicating a cumulative count value not shown, but also a request for roaming for each service provider, indicates a cumulative count value when the mobile terminal 11 receives a roaming service from the roaming service provider's visited network 13 FA ', which is an item indicating an accumulated count value for which the roaming service is not provided to the visited network 13 of the provider of which the portable terminal 11 has requested roaming, as an item' SC '.

6 is a configuration diagram illustrating a service server according to an embodiment of the present invention. 1 to 6, the service server 20 of the present embodiment includes a server interface unit 21, a server storage unit 23, and a server control unit 25. At this time, the server transmission unit 27 ).

The server interface unit 21 has an interface for performing data transmission and reception with the gateway location register 19 and may additionally include an interface for performing data transmission and reception with the UCMS server 31 and the OTA server 33 have. Specifically, the server interface unit 21 has an interface for receiving subscriber information from the gateway location register 19 and additionally synchronizes the USIM card profile of the portable terminal 11 with the UCMS server 31, And may have an interface for transmitting the PLMN list to the OTA server 33. [

The server storage unit 23 stores the actual traffic distribution ratio value for the plurality of visited networks 13 in which the portable terminal 11 is provided with the international roaming service, At this time, the PLMN list or the roaming sub-table may be further stored. In addition, it may further store user personal information or visited network service information.

The user's personal information includes personal information about the user such as the user's gender, age, address, and service information provided by the user. The service provided by the user includes, for example, a rate plan or call charge information, data call charge information, Roaming history information of the roaming history information, and the like.

The visiting network service information refers to the additional service information that the user can use in addition to the current communication service in the visited network and the marketing and promotion information currently provided by the visiting network provider.

The server transmission / reception unit 27 has an interface for performing data transmission / reception with the administrator terminal 37 via a network (not shown). Specifically, the server transmission / reception unit 27 receives the provider position information from the administrator terminal 37 and has an interface for transmitting the status information of the international roaming service.

The server control unit 25 controls the operations of the server interface unit 21, the server storage unit 23, and the server transmission / reception unit 27 as a whole.

The server control unit 25 of the present embodiment receives from the gateway location register 19 via the server interface unit 21 a subscriber of the portable terminal 11 when the portable terminal 11 requests the location registration to receive the roaming service from abroad, The mobile terminal 11 refers to the country code (CC) and the business entity code (VC) included in the subscriber information to determine from which country the mobile terminal 11 requests the location registration through the visited network 13.

The server control unit 25 stores the setting ratio value preset and stored in the server storage unit 23 of the visited network 13 requesting the location registration of the portable terminal 11 and the actual ratio The traffic distribution ratio value is extracted and the size is compared.

At this time, if a specific period to which the setting ratio value for the visited network 13 is applied is set, the server control unit 25 sets the setting ratio value applied at the time when the portable terminal 11 requests the location registration, The size of the traffic distribution ratio value can be compared.

When the server controller 25 confirms that the actual traffic ratio value for the visited network 13 is larger than the preset ratio value, the server controller 25 transmits a roaming unavailable message to the gateway location register 19.

At this time, the server control unit 25 confirms that the actual traffic ratio value for the visited network 13 is equal to or smaller than the set ratio value, and transmits the roaming permission message to the gateway location register 19.

When receiving the subscriber information of the portable terminal 11 from the gateway location register 19 through the server interface unit 21, the server control unit 25 refers to the country code (CC) included in the subscriber information It is possible to extract a set ratio value and an actual traffic distribution ratio value for all the plurality of visited networks 13 providing the international roaming service in the area where the terminal 11 requests the location registration. Then, the server control unit 25 calculates a difference value obtained by subtracting the actual traffic distribution ratio value from the set ratio value for all of the plurality of visited networks 13, If the difference value obtained by subtracting the actual traffic distribution ratio value from the set ratio value of the traffic rate ratio setting unit 13 is not the largest, the roaming unreliable message can be transmitted to the gateway location register 19.

At this time, if the difference value obtained by subtracting the actual traffic distribution ratio value from the set ratio value of the visited network 13 for which the mobile terminal 11 requests the location registration is the largest, the roaming permission message is transmitted to the gateway location register 19 .

For example, referring to FIG. 5, when the portable terminal 11 makes a location registration request through the visiting network 13 of the d or f provider in the country B, it transmits a roaming message to the gateway location register 19 And transmits the roaming permission message to the gateway location register 19 when requesting the location registration through the e-business's visited network 13. [

In addition, when the portable terminal 11 confirms that the visited network 13 requesting location registration is a Forward Public Land Mobile Network (FPLMN), it can transmit a roaming unauthorized message to the gateway location register.

The server control unit 25 receives the subscriber information from the gateway location register 19 through the server interface unit 21 and determines that the actual traffic distribution ratio value for the visited network 13 corresponds to the visited The roaming sub-table stored in the server storage unit 23 can be extracted after transmitting the roaming-unrecognized message to the gateway location register 19 when the set ratio value is larger than the set ratio value for the network 13. [ Subsequently, a PLMN list corresponding to the subscriber information of the portable terminal 11 is extracted, and a difference value obtained by subtracting the actual traffic distribution ratio value from the traffic setting ratio value within the country where the portable terminal 11 requests the location registration of the first PLMN Can be set as the largest visited network (13).

Specifically, the server control unit 25 sets the items 'PLMNXXX' and 'PLMNXXXATI' in the PLMN list shown in FIG. 3 as the traffic setting ratio value of the visited network 13 in the country in which the portable terminal 11 requests the location registration The information on the visited network 13 having the largest difference value minus the actual traffic distribution ratio value can be set.

For example, referring to FIG. 5, when the portable terminal 11 requests the location registration through the visiting network of the f provider in the country B, the actual distribution ratio value (63%) is larger than the setting ratio value (60%) , The service server 20 confirms the setting ratio value and the actual distribution ratio value allocated to each business operator (d, e, f) in country B and the difference value obtained by subtracting the actual distribution ratio value from the setting ratio value is the largest b Set the visited network (13) operated by the provider (2%) as the first PLMN.

The server control unit 25 extracts the PLMN list corresponding to the subscriber information of the portable terminal 11 and then transmits at least one of the user personal information stored in the server storage unit 23 to the reference Parameter to set the priority of the PLMN list. For example, if a user has a large amount of data usage, the first PLMN can be set as the lowest cost data access fee. If the user has a lot of additional services, the first PLMN . In addition, if a particular visiting network is marketing to a specific age group, the visiting network may be set as the first PLMN if the user has the corresponding age range.

In addition, when two or more parameters are used to set the priority of the PLMN list, weights can be given to each parameter. For example, when two parameters of a call charge and an additional service are set as reference parameters and a weight is assigned to a call charge more than an additional service, a visit network with a low call charge is set as the first PLMN, The visiting network to be provided can be set as the second PLMN.

By setting the priority of the PLMN list through the user personal information, the roaming service can be provided according to the user's tendency.

The server control unit 25 can reflect the set PLMN list and the received subscriber information in the roaming sub table when the received subscriber information or the PLMN list is newly set.

The roaming sub-table is a table in which information about the mobile terminal 11 in which the service server 20 is roaming is stored.

Referring to FIG. 7, the roaming sub-table includes a 'UserID', a subscriber identification number used as an index, a subscriber identification number ' 'UpdateTime', which is the time at which the subscriber identification number last transmitted the overseas location registration, 'GroupID', which is the PLMN list group ID, a country code indicating the country or country group in which the current subscriber is roaming, (VC), which is a Vendor Code indicating a visited network 13 in which a current subscriber is roaming, and a current PLMN (Visited PLMN) or an HPLMN (Home PLMN) And the data type may be input as OCTETS (byte data), DATE (time data), INT (integer data), and so on. At this time, 'CC' or 'VC' is provided as a VLR number or SGSN (Serving GPRS Supporting Node) number, and 'UserID' may be provided as MSISDN (Mobile Station ISDN) information, but is not limited thereto.

If there is no subscriber information in the roaming sub-table, the server control unit 25 newly creates a roaming sub-table, reflects the received subscriber information and the newly set PLMN list, and stores the received subscriber information and the stored roaming sub- If there is a difference, the roaming sub-table can be updated by reflecting the subscriber information. If the PLMN list is newly set, the roaming sub-table can be updated by reflecting the set PLMN list.

When the server control unit 25 confirms that the actual traffic ratio value of the visited network 13 is equal to or smaller than the set ratio value, the server control unit 25 transmits a roaming permission message to the roaming sub table stored in the server storage unit 23 And update the roaming sub-table by reflecting the subscriber information.

Thereafter, the server control unit 25 transmits the newly set PLMN list to the OTA server 33. At this time, the service server 20 formats the data in the APDU format for data communication with the USIM module, and transmits the data to the OTA server 33. Also, when formatting the data, the UCMS server 31 can inquire the card key of the USIM card, and can perform the data format using the SP (Security Policy) method.

At this time, when the server control unit 25 transmits the newly set PLMN list to the OTA server 33, the server control unit 25 can transmit the visited network service information together. By providing the visited network service together, the user can be guided to select the visited network by confirming the service, marketing, and promotional information provided by the provider of the visited network together with the PLMN list.

On the other hand, the server control unit 25 refers to the roaming sub table, and when the portable terminal 11 confirms that there is a registered PLMN (RPLMN) in the portable terminal 11 because the company code storing the location registration is stored, The mobile terminal 11 may transmit a delete message for deleting the RPLMN.

At this time, the server control unit 25 may transmit a deletion message for deleting the RPLMN in the portable terminal 11 while transmitting the PLMN list to the newly set PLMN list, and when the power of the portable terminal 11 is turned on or off The location registration is performed when the mobile terminal 11 is turned on or off or the local time of the corresponding country where the mobile terminal 11 is located and the deletion message is displayed at a preset time, Lt; / RTI >

8 is a flowchart illustrating a roaming service method of a mobile terminal according to an embodiment of the present invention. 1 and 8, the visiting network 13 receives an overseas roaming request signal from the portable terminal 11 to receive the international roaming service from abroad (S41) The gateway registration server 19 requests the location registration of the portable terminal 11 (S43).

In step S43, the gateway location register 19, which is requested to register the location of the portable terminal 11, transmits subscriber information to the service server 20 (S45).

At this time, the gateway location register 19 can extract the subscriber information by referring to the location registration request message (Update Location) received through the visited network 13 from the portable terminal 11, and transmit the extracted subscriber information to the service server 20. As described above, for example, the gateway location register 19 can check the subscriber information in the global title (GT) information of the location registration request message in which the code representing the country and the code representing the visited network are combined have.

The service server 20 receiving the subscriber information in step S45 confirms the country and the visited network 13 from which the mobile terminal 11 requests the location registration in the subscriber information, The actual traffic distribution ratio value for the requested visited network 13 is compared with the set ratio value for the visited network 13 included in the provider's portion information (S47).

At this time, if the specific period in which the setting ratio value for the visited network 13 is applied is set, the service server 20 sets the setting ratio value applied at the time when the portable terminal 11 requests the location registration, The size of the traffic distribution ratio value can be compared.

In addition, the service server 20 stores the setting ratio value and the size of the actual traffic distribution ratio value for all of the plurality of visited networks 13 providing the international roaming service in the area where the portable terminal 11 requests the location registration Can be compared.

If the actual traffic distribution ratio value for the visited network 13 is equal to or smaller than the setting ratio value for the visited network 13 in step S47, the service server 20 roams to the gateway location register 19 An acceptance message is transmitted (S49).

In step S49, the gateway location register 19 receiving the roaming permission message transmits the location registration message to the home location register 17, thereby receiving the ISD information transmitted from the home location register 17, And manages subscriber information of the subscriber station 11 (S51).

The gateway location register 19 that has performed the location registration in association with the home location register 17 in step S51 transmits the location registration completion message to the mobile terminal 11 through the visited network 13 in step S53.

If the actual traffic distribution ratio value for the visited network 13 is greater than the setting ratio value for the visited network 13 in step S47, the service server 20 transmits a roaming unavailable message to the gateway location register 19 (S55).

At this time, the service server 20 calculates a difference value by subtracting the actual traffic distribution ratio value from the set ratio value for all the plurality of visited networks 13 in the area, and when the portable terminal 11 requests location registration When the difference value obtained by subtracting the actual traffic distribution ratio value from the set ratio value of the visited network 13 is not the largest, it is possible to transmit a roaming unreleased message to the gateway location register 19.

In addition, when the portable terminal 11 confirms that the visited network 13 requesting location registration is a Forward Public Land Mobile Network (FPLMN), it can transmit a roaming unauthorized message to the gateway location register.

In step S55, the gateway location register 19, which has received the roaming unauthorized message, transmits a location registration failure message to the mobile terminal 11 via the visited network 13 (S57). Thereafter, the portable terminal 11 attempts to request the location registration to another visited network 13 in the area.

FIG. 9 is a flowchart illustrating a roaming service method of a mobile terminal according to another embodiment of the present invention. Referring to FIGS. 1 and 8, since steps S61 to S77 are the same as steps S41 to S57 of FIG. 8, description thereof will be omitted.

It is confirmed in step S77 that the actual traffic distribution ratio value for the visited network 13 is larger than the set ratio value for the visited network 13 and the service server 20 that has transmitted the roaming unauthorized message to the gateway location register 20 (20) extracts the roaming sub-table stored therein (S79).

Subsequently, in step S75, the service server 20 extracting the roaming sub-table extracts the PLMN list corresponding to the subscriber information of the portable terminal 11 and transmits the first PLMN to the country where the portable terminal 11 requests location registration The visited network 13 having the largest difference from the traffic setting ratio value minus the actual traffic distribution ratio value is set as the visited network 13 (S81).

At this time, the service server 20 may extract the PLMN list corresponding to the subscriber information of the portable terminal 11, and then set the priority of the PLMN list by setting at least one parameter of the user personal information as a reference parameter.

The service server 20 setting the PLMN list in step S81 reflects the received subscriber information and the newly set PLMN list on the roaming sub-table and stores it (S83).

At this time, if there is no subscriber information in the roaming sub-table, the server control unit 25 can newly generate a roaming sub-table, store the received subscriber information and the newly set PLMN list, and store the received subscriber information and pre-stored roaming The sub-tables may be compared to update the roaming sub-table by reflecting the subscriber information if there is a difference. If the PLMN list is newly set, the roaming sub-table may be updated by reflecting the set PLMN list.

In step S67, if it is confirmed that the actual traffic ratio value of the visited network 13 is equal to or smaller than the set ratio value, the roaming permission message is transmitted, then the roaming sub table is extracted, and the subscriber information is reflected And update the roaming sub-table.

The service server 20 that has updated the roaming sub table in step S83 requests the UCMS server 31 to request the profile of the USIM card loaded in the portable terminal 11 and receives the profile of the USIM card from the UCMS server 31, (S85).

In step S85, the service server 20 synchronizing the USIM card profile with the UCMS server 31 transmits the newly set PLMN list to the OTA server 33 (S87).

At this time, the service server 20 formats the data in the APDU format for data communication with the USIM module, and transmits the data to the OTA server 33. Also, when formatting the data, the UCMS server 31 can inquire the card key of the USIM card and perform the data format using the SP (Security Policy) method.

In addition, when the service server 20 transmits the newly set PLMN list to the OTA server 33, the service server 20 can transmit the visited network service information together.

On the other hand, when the service server 20 refers to the roaming sub table and confirms that the provider code storing the location registration of the portable terminal 11 is stored and the RPLMN is present in the portable terminal 11, Lt; RTI ID = 0.0 > RPLMN. ≪ / RTI > At this time, the service server 20 may transmit a deletion message for deleting the RPLMN in the portable terminal 11 while transmitting the PLMN list. When the portable terminal 11 is powered on or off, that is, The mobile terminal 11 may inquire the local time of the corresponding country where the portable terminal 11 is located and transmit the deletion message at a preset time.

The OTA server 33 that has received the PLMN list in step S87 performs the SMS format to transmit the received PLMN list to the mobile terminal 11 through the SMS method and then transmits the FSM (FowardSM) including the PLMN list, Message to the visited network 13 via the gateway location register 19 (S89).

The visited network 13 receiving the FSM message in step S89 generates a short message including the corresponding PLMN list information in cooperation with the short message service center (SMSC, not shown), and then transmits the short message to the mobile terminal (S91).

In step S91, the portable terminal 11 that has received the short message transmits the PLMN list included in the received short message to the USIM card installed therein (S93), and the USIM card stores the PLMN list in the internal memory (S95).

When the portable terminal 11 requests the location registration again, the portable terminal 11 can perform the location registration process using the PLMN list received from the OTA server 33 through the visited network 13.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be appreciated by those skilled in the art that numerous changes and modifications can be made to the invention. And all such modifications and changes as fall within the scope of the present invention are therefore to be regarded as being within the scope of the present invention.

According to the present invention, a separate apparatus is not required in a conventional roaming service system to control traffic between a plurality of overseas companies that provide international roaming service, thereby minimizing additional costs. Particularly, in view of the trend of increasing number of users moving to foreign countries, the utilization of the roaming service of the portable terminal of the present invention will not be much utilized.

11: portable terminal 13: visited network
17: home location register 19: gateway location register
20: service server 21: server interface part
23: server storage unit 25: server control unit
27: Server Transmitter / Receiver 31: UCMS Server
33: OTA server 37: administrator terminal

Claims (23)

delete A server interface unit for transmitting and receiving data to and from the gateway location register;
A server storage unit for storing actual traffic distribution ratio values and provider portion information for a plurality of visited networks;
The server interface unit refers to the subscriber information of the mobile terminal for receiving the international roaming service received from the gateway location register and determines the actual traffic distribution ratio value for the visited network requested by the mobile terminal to be registered, And a server control unit for transmitting a roaming unavailable message to the gateway location register if the actual traffic distribution ratio value for the visited network is greater than the set ratio value for the visited network, ;
/ RTI >
The set ratio value is a value
And a traffic rate allocated to the visited network. delete 3. The apparatus of claim 2,
If the visiting network requesting the location registration is not a visiting network having a largest difference between the set ratio value and the actual traffic distribution ratio value among a plurality of visited networks in the area, To the service server. 3. The apparatus of claim 2,
Wherein the mobile terminal transmits a roaming unavailable message to the gateway location register when the visited network requested by the mobile terminal is a Forbidden Public Land Mobile Network (FPLMN). 3. The method of claim 2,
The server interface unit includes an interface for data transmission / reception with an Over The Air (OTA) server,
Wherein the server storage further stores any one of a PLMN list, user personal information, and visited network service information,
Wherein the server control unit extracts a PLMN list corresponding to the subscriber information and stores the first PLMN of the extracted PLMN list in the area where the mobile terminal requests location registration, Traffic distribution ratio value minus the value of the traffic distribution ratio, and transmits the set PLMN list to the OTA server through the server interface unit. delete delete The method according to claim 6,
The server control unit extracts a PLMN list corresponding to the subscriber information, sets a priority order of the extracted PLMN list with reference to the user personal information, and transmits the set PLMN list to the OTA server through the server interface unit To the service server. delete 10. The method of claim 9,
Wherein the server control unit transmits the visited network service information together with the set PLMN list to the OTA server through the server interface unit. delete delete delete delete The service server receiving subscriber information of a mobile terminal for receiving an international roaming service from a gateway location register;
The service server refers to the received subscriber information to determine whether the actual traffic distribution ratio value of the visited network requested by the mobile terminal to register the location and the set ratio included in the provider portion information of the visited network A comparison step of comparing values;
Wherein the service server transmits a roaming unavailable message to the mobile terminal through the gateway location register when the actual traffic distribution ratio value for the visited network is greater than the set ratio value for the visited network, ;
/ RTI >
The set ratio value is a value
And a traffic ratio allocated to the visited network. delete 17. The method of claim 16,
If the visited network in which the mobile terminal requests the location registration is not the visited network having the largest difference between the set ratio value and the actual traffic distribution ratio value among the plurality of visited networks in the area, And transmits a roaming-disabled message to the mobile terminal. 17. The method of claim 16,
A third transmission step of, when the service server is a Forbidden Public Land Mobile Network (FPLMN), when the visited network in which the mobile terminal requests location registration transmits a roaming unavailable message to the gateway location register;
The method of claim 1, further comprising: 17. The method of claim 16, further comprising, after the first transfer step,
The service server extracts a PLMN list corresponding to the subscriber information, extracts a first PLMN of the extracted PLMN list from the set rate value in the area where the portable terminal requests location registration, A traffic distribution ratio value;
The method of claim 1, further comprising: 17. The method of claim 16, further comprising, after the first transfer step,
A setting step of the service server extracting a PLMN list corresponding to the subscriber information and setting a priority order of the extracted PLMN list by referring to user personal information;
The method of claim 1, further comprising: delete delete

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