KR101042526B1 - Method and Apparatus for Automatically Updating Change of Preferred Business Network to Mobile Station - Google Patents

Abstract

The present invention, when attempting outbound roaming from the mobile terminal of the overseas visited network using the overseas roaming service to the home network, through the RSCP which is an intelligent network node of the home network, for changing the preference of the operator network or for the prohibited operator network or other non-preferred operator network If the information is notified to the UMC to update the USIM card of the roaming terminal from the UMC based on the SMS according to the OTA protocol, the transmission fails or the corresponding request is made when all the roaming terminals are requested by the UMC. The present invention relates to a method and apparatus for updating network information for overseas roaming, which can reduce the occurrence and cost of a large amount of traffic. The terminal information updating method according to the present invention comprises the steps of performing a location registration or location registration update, determining whether to change the service based on the information used in the process of the location registration or location registration update and according to the determination Transmitting the control message to the terminal to update the information managed by the terminal.

OB roaming, OTA SMS, USIM, preferred carrier, non-preferred carrier

Description

Method and Apparatus for Automatically Updating Changes in Preferred Operator Networks on Devices {Method and Apparatus for Automatically Updating Change of Preferred Business Network to Mobile Station}

The present invention relates to roaming services from overseas, and in particular, outbound from a mobile terminal (hereinafter referred to as a roaming terminal) of an overseas visit network using an overseas roaming service to a home network (hereinafter, referred to as 'OB'). At the time of roaming attempt, the home network is informed about the change in preference of the Public Land Mobile Network (PLMN) by SMS based on the Over the Air (OTA) protocol. By updating the Universial Subscriber Identification Module card, it is possible to manage overseas roaming, which can be directly managed by the UMC to reduce transmission failures and the incurring and cost of large traffic when requesting the corresponding changes for all roaming terminals collectively. The present invention relates to a method and an apparatus for updating access network information.

Today, according to the overseas roaming service, mobile communication subscribers such as domestic WCDMA can use various mobile communication services by accessing domestic communication networks in foreign countries using the same mobile terminal. Generally, subscribers would like to use voice or video call service through mobile terminals, but the functions of mobile terminals have been extended to receive multimedia data download / upload service or wireless internet service.

When a USIM card is installed in a roaming terminal using such an overseas roaming service, the same service can be obtained by simply attaching the card to another terminal, so the terminal can be replaced freely. Function as an electronic wallet for card payment and the like.

In the case of using the USIM card, the USIM card management center of the operator's network manages the system registration information related to the USIM card, and downloads and installs an application program required for the service to the terminal equipped with the USIM card. At this time, according to the OTA protocol for the use of the USIM card, information related to the start of use of the USIM card or the change of the policy may be transmitted from the USIM card management center to the SMS. Accordingly, the terminal equipped with the USIM card can maintain the continuity of the service using the USIM card at any time at any time even when the service policy is changed by receiving an SMS message (hereinafter, referred to as 'OTA SMS') according to the OTA protocol.

For example, as a policy for roaming terminals, when the existing preferred provider network in the roaming area is abolished and the preference is changed to another provider network, the USIM card management center of the home network corresponds to a Short Message Service Center (SMSC). Request to notify the roaming terminals of the change. However, updating OIM SMS messages to roaming terminals scattered in many foreign countries around the world to update the USIM card with the change information desired by the home network operator requires a large amount of traffic, resulting in network management such as USIM card management center and SMSC. This can put a strain on the server and incur a lot of cost. This is a problem that should be avoided even more, given that the transmission failure rate of OTA SMS is high. In addition, the change of the preference may be a case where the foreign country is limited to only a certain region among the foreign countries. Sending OTA SMS messages to all roaming subscribers without any such consideration may cause a waste of traffic.

Accordingly, an object of the present invention is to solve the above-described problem, and an object of the present invention is to roam system registration information related to a USIM card, such as a change in a preferred provider network according to a policy change for a corresponding overseas roaming area of a home network operator. A method of updating access network information for overseas roaming, in which a terminal equipped with a USIM card can maintain continuity of service with a changed policy by selectively transmitting an OTA SMS message only to a roaming terminal requiring update without burdening traffic for updating to a terminal. To provide a device.

Another object of the present invention is to change the PLMN's preference or prohibit PLMN or other non-preferred PLMN based on the operator network information of the overseas visitor network connected by the roaming terminal equipped with the USIM card through RSCP which is the intelligent network node of the home network. By determining whether the information needs to be updated, an OTA SMS message is sent through the SMSC according to the transmission request notified to the UMC, and automatically updated to the USIM card of the corresponding roaming terminal, thereby smoothly roaming through the changed PLMN desired by the home network service provider. An object of the present invention is to provide a method and apparatus for updating access network information for overseas roaming.

First, to summarize the features of the present invention, the method of updating the information of the terminal according to an aspect of the present invention for achieving the above object, the step of performing the location registration or location registration update of the terminal; Determining whether a service is changed based on information used in the location registration or location registration update process; And updating the information managed by the terminal by transmitting a control message to the terminal according to the determination.

In the determining step, it is determined whether the information managed in the USIM card of the terminal has changed, and in the updating step, the information managed in the USIM card is updated according to the control message.

The performing may include performing a location registration or location registration update process from the outbound roaming terminal to the home network.

In the determining step, it is determined whether or not the priority of the overseas provider network to which the terminal is to be accessed is based on the connected overseas provider network information.

The determining may include: when the roaming terminal is connected to a network other than the highest preferred provider network according to the operator network information, the control for the roaming terminal to make a first priority call using the highest preferred operator network. Determine the request to send the message.

It is determined that the control message includes information for classifying a foreign provider network used in the location registration update process as a network for which call access is prohibited.

In the updating, the control center of the home network receives a transmission request according to the determination from an intelligent network node and transmits a control message generated for updating the service policy information to the roaming terminal.

When the RSCP as the intelligent network node manages the policy for the change of the overseas operator network, and when the UMC as the management center generates and transmits the OTA SMS message as the control message, the roaming terminal receives the OTA SMS received through the SMSC. According to the message, it is possible to update the information of the overseas operator network used to access the call stored in the USIM card.

The control message may be a message according to an OTA protocol.

In addition, the terminal information updating apparatus according to another aspect of the present invention, the operator for receiving the location registration completion information during the process of performing the location registration or location registration update to extract the information used in the process of the location registration or location registration update Network extraction unit; A change determination unit determining whether a service is changed for a corresponding terminal based on the extracted information; And a request unit for requesting transmission of a control message to the terminal to update the information managed by the terminal according to the determination.

The terminal information updating apparatus further includes a storage means for managing a ranking list of a preferred provider network, wherein the change determination unit, the terminal is connected to the call connection through the comparison of the ranking list of the preferred provider network and the provider network information. It is possible to determine whether the provider network used is changed.

In addition, the mobile terminal according to another aspect of the present invention, an SMS receiving unit for receiving an OTA SMS message; And a card update unit for updating a USIM card according to the OTA SMS message, and after the process of performing a location registration update, the network side determines and manages the USIM card based on information used in the location registration update process. When a request for transmission of the OTA SMS message is made to change the information, the communication service may be performed using the updated information on the USIM card according to the OTA SMS message received from the network side.

According to a method and apparatus for updating access network information for overseas roaming according to the present invention, roaming requires updating of system registration information related to a USIM card, such as a change in a preferred carrier network, according to a policy change for a corresponding overseas roaming area of a home network communication service provider. By selectively sending OTA SMS messages to the terminal, it is possible to reflect the policy change without burdening traffic.

In addition, according to the method and apparatus for updating access network information for overseas roaming according to the present invention, the PLMN preference is based on the operator network information of the overseas visitor network accessed by a roaming terminal equipped with a USIM card through RSCP which is an intelligent network node of the home network. By determining whether the information on the changed or prohibited PLMN or other non-preferred PLMN is necessary, an OTA SMS message is sent through the SMSC in response to a transmission request notified to the UMC, and automatically updated on the roaming terminal's USIM card accordingly. Roaming service can be smoothly maintained through the changed PLMN desired by the service provider.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. Like reference numerals in the drawings denote like elements.

1 is a diagram illustrating a mobile communication environment for outbound (OB) roaming according to an embodiment of the present invention.

Referring to FIG. 1, a wireless communication system 100 according to an embodiment of the present invention provides a home network for providing a mobile communication service, such as wideband code division multiple access (WCDMA), to a terminal 119 in a local station. 110) a preferred operator network as a foreign visiting network that provides in / out bound roaming service from a foreign country to a home network to a home network terminal 119 according to a partner contract relationship with a carrier managing the home network. business network 120 and non-preferred business network 130.

The telecommunication company managing the home network 110 selects a more favorable overseas visit network as the preferred operator network 120 in consideration of the communication quality of the overseas visit network, billing standards, etc., and selects the foreign visit network that is not preferred by the non-preferred operator network. Select 130 to enter into a partner contract relationship so that the outbound roaming service can be provided smoothly. At this time, even if the preferred provider network 120 is classified as the highest preferred provider network in the roaming region where the channel allocated to the non-preferred operator network 130 can be used, the preferred carrier which is the highest preferred carrier network without using such a channel. The outbound roaming service is preferentially provided to the channel allocated to the network 120. Here, the channel allocated to the non-preferred operator network 130 may be used in a shaded area in which the channel allocated to the preferred operator network 120 is not available, and as the non-preferred operator network 130, the subordinate to the preferred operator network 120. A plurality of classified operator networks may be selected to provide roaming services. In the case of a plurality of non-preferred service provider networks 130, the priority can be determined again among them, and a channel of a high priority service provider network can be used preferentially.

Meanwhile, the home network 110, the preferred operator network 120, and the non-preferred operator network 130 are connected to a service and a packet data channel of a CS (Circuit Switch) domain such as a voice or video call service based on a circuit channel. Provides the mobile terminal 119, 149 of the PS (Packet Switch) domain, such as downloading or uploading the multimedia data, wireless Internet service, or mobile Internet service based on the mobile terminal 119 of the home network 110. And an overseas roaming service between the mobile terminal 149 of the preferred operator network 120 or the non-preferred operator network 130. Such mobile communication services are provided based on WCDMA as shown in FIG. 1, which will be described below by way of example. However, the mobile communication services are not limited thereto. For example, the present invention may be applied in various ways.

Each of the home network 110, the preferred operator network 120, and the non-preferred operator network 130 is basically a base station (Node-B) 111/121/131 and an RNC (Radio) in order to provide a mobile communication service based on WCDMA. Network Controller: 112/122/132. The RNC performs a radio resource management (RRM) function and a handoff function for supporting mobility between cells according to scheduling of radio resources, thereby communicating between mobile terminals. Each mobile terminal updates its location registration with the HLR 114/124/134, whereby the HLR manages the location registration and status of each mobile terminal. According to the location information of each mobile terminal registered in the HLR, the mobile terminal can receive CS domain service according to the exchange function of the nearest MSC (Mobile Switching Center) 113/123/133, and the SMSC (Short Message Service Center) A short message can be received according to the SMS call processing of 117/125/135.

The Gateway Location Register (GLR) 115 and the Roaming Service Control Point (RSCP) 116 of the home network 110 are configured to relay overseas roaming services. The USIM card management center 118 manages system registration information related to the Universal Subscriber Identification Module (USIM) card included in the mobile terminal 119/149, and installs an application program necessary for a USIM card related service on the terminal. Alternatively, the OTA may transmit an SMS (OTA SMS) message according to an over the air (OTA) protocol to the terminals so that changes in the service policy may be reset. Here, for example, the update of the information stored in the USIM card is made through an OTA SMS message. However, the present invention is not limited thereto, and the control message for updating the information is not only SMS but also LMS (Long Message Service) and MMS. A predetermined message through a signaling channel of the CS domain may be used as a control message for updating information of the USIM card, including an OTA message according to a protocol such as Multimedia Message Service (Unified Message Service) or USSD (Unstructured Supplementary Service Data).

The RSCP 116 is an intelligent network node. In particular, when the mobile terminal 149 of the overseas roaming area registers or updates its initial location with the HLR 114 via the GLR 115 of the home network, the GLR is performed. Before the 115 transmits the location registration related information such as the subscriber profile downloaded from the HLR 114 to the MSC 123/133 or SGSN of the overseas network 120/130, the location registration related information such as the subscriber profile is transmitted to the GLR ( It is relayed to download from the 115) to provide the necessary services to the roaming terminals.

Meanwhile, in the present invention, the mobile terminal may not only be a cellular phone, a Personal Communications Services phone (PCS phone), a synchronous / asynchronous International Mobile Telecommunication-2000 (IMT-2000) terminal, but also a mobile communication. Notebook PCs, Desktop PCs, Palm Personal Computers, Personal Digital Assistants (PDAs), Smart Phones, WAP Phones, Wireless Application Protocol Phones, and Mobile Game Machines It means all communication devices such as mobile play-station.

In the present invention, in particular, the overseas outbound roaming terminal 149 that performs the outbound roaming service to the home network based on the information of a foreign land carrier network (PLMN) managed by the USIM card. In the home network (for example, RSCP) after the process of performing a location registration (for example, the first location registration after powering on the terminal after the power-on of the terminal) or a location registration update for the roaming service) When a request for transmission of an OTA SMS message for a change in a foreign service policy (for example, a change in service provider network information) is made based on the self-judgment based on the service provider network information used in the location registration update process, roaming is performed. The terminal 149, according to the corresponding OTA SMS message received from the home network (e.g., SMSC), applies the corresponding service policy information (e.g., foreign service provider network information) to the USIM card. B) We updated the change so that roaming service can be performed by using the updated information of overseas operator network. Here, the change of the service provider network as the change of the service policy includes the change of the preferred service provider network, the change (addition / deletion) of the prohibited service provider network, or the change of the priority of at least one non-preferred service provider network except the preferred service provider network. can do.

Accordingly, in the present invention, selectively transmit the OTA SMS message only to the roaming terminal that needs to update the system registration information related to the USIM card, such as a change in the preferred carrier network, according to the policy change for the home roaming region of the corresponding overseas roaming region. Therefore, roaming service can be effectively maintained by reflecting policy change without burdening traffic.

Hereinafter, a method of updating access network information of a terminal for overseas roaming according to an embodiment of the present invention will be described in more detail with reference to FIG. 2.

First, when the power of the outbound roaming terminal (power on), the roaming terminal performs location registration to the home network. The location registration process may be a location registration process first performed in the visitor network or a location registration update process periodically performed after the already performed location registration process. The roaming terminal transmits a message for requesting the location registration update to the MSC of the overseas visit network for location registration or location registration update (S210).

With respect to the location registration update request, the location registration update process is performed between the MSC of the overseas visited network and the home network (S211). Hereinafter, the location registration update process will be briefly described. For example, the MSC of the overseas visitor network sends a location registration update message to the GLR 115. The location registration update message may include an International Mobile Subscriber Identity (IMSI) number of the subscriber roaming terminal assigned for roaming and MSC GT (Global Title), which is source identification information. The GLR 115 sends a location registration update message back to the HLR 114 of the home network, whereby a location registration update is made between the GLR 115 and the HLR 114, and the GLR 115 receives a subscriber from the HLR 114. Download the profile. When the location registration update is completed between the GLR 115 and the HLR 114, the GLR 115 according to the internal standard, the IMSI number of the roaming terminal, the Mobile Subscriber Integrated Service Digital Network (MSSIS), the MSC GT of the overseas network, and the home network. The RSCP 116 may be notified of information necessary to support the HLR GT other roaming service. As the RSCP 116 stores the necessary information using the above information received from the GLR 115 and gives the corresponding response to the GLR 115, the GLR 115 uses the information received from the RSCP 116. The location registration result such as subscriber profile can be transmitted to MSC of overseas visited network. Upon completion of the location registration update, the MSC of the visited network that has received the location registration result may respond with a completion message of the location registration update to the corresponding roaming terminal (S212).

After the location registration update process of the roaming terminal is performed in this way, the RSCP 116, which is an intelligent network node, is connected to the overseas provider network information (for example, MSC GT of the overseas visited network). Based on the determined operator information, it is determined whether the service policy for the roaming terminal is changed (for example, the operator network) (S220). The RSCP 116 is responsible for the overall control of roaming services, and in particular, manages policies for changing overseas operator networks and changes the operator network (e.g., change or prohibit preferred carrier networks for roaming terminals). Control message for changing the priority of the overseas provider network to which the terminal is connected by determining whether the changed carrier network has been changed (deleted / added) or the priority of at least one non-preferred provider network except the preferred provider network For example, it is determined whether to request transmission of an OTA SMS message.

The roaming terminal registers and calls a location for outbound roaming service to the home network based on overseas operator network information managed by the USIM card (for example, information on preferred operator network, non-preferred operator network, or prohibited operator network). Attempt to connect. For example, a roaming terminal may attempt to access a call by registering a location first through a channel assigned to a preferred provider network, and assigning it to a non-preferred provider network in a shadow area where the channel allocated to the preferred provider network cannot be used. A call can be attempted by location registration through the established channel. The roaming terminal cannot use the roaming service through a channel assigned to the prohibited provider network.

The RSCP 116 manages a ranking list of a preferred provider network to be applied to a roaming terminal, and when there is a change in the corresponding rank due to a change in a service policy, the roaming terminal uses a roaming service through an existing lower rank provider network. If you update the location registration to determine whether or not to request the transmission of OTA SMS message for the change of the operator network information of the overseas according to the change to be made automatically updated.

The RSCP 116 determines whether or not it is an existing service policy based on overseas provider network information (for example, corresponding carrier information determined as MSC GT of an overseas visited network) used in the process of updating the location registration of the roaming terminal. You can judge.

For example, in Table 1, B1 is the first preferred provider with high call / packet quality and low settled payment per call / packet between operators, B2 is an intermediate non-preferred carrier with medium quality and medium payments, B3 is assumed to be a very unfavorable operator due to the lowest quality and high payment.

 TABLE 1

country buisnessman Preferred Operator Prohibited Business RSCP operation Country b B1 Not set Not set OTA not sent Country b B2 Set Not set When the roaming terminal registers the location in the B2 network, the OTA SMS transmission request for changing the preferred carrier network information of the USIM card to B1. Country b B3 Set Set When the roaming terminal registers the location in the B3 network, the request for sending the SMS changes the preferred carrier network information of the USIM card to B1 and adds B3 to the prohibited provider network information. Country C C1 .. Not set Not set OTA not sent

When the roaming terminal determines that the country B performs a call connection for location registration through the visited network of B1, which is the preferred carrier network, the RSCP 116 needs to determine to request transmission of an OTA SMS message to the roaming terminal. There is no.

However, when the roaming terminal determines that the country B performs a call connection for location registration through the visited network of the intermediate non-preferred operator network B2, the RSCP 116 determines that the roaming terminal has the highest priority provider network (B1 network). Using this, it is possible to determine a request for transmission of an OTA SMS message to a roaming terminal so as to make a priority call connection. This is the same even when the terminal determines that the country B performs a call access for location registration through the visited network of B3, the lowest non-preferred operator network. However, when the roaming terminal performs location registration through the visited network of B3, which is the lowest non-preferred service provider network, the OTA SMS message is connected to the highest priority call using the preferred service provider network (B1 network) as described above. The provider network (B3 network) that performs the location registration may be determined to include information for classifying the network as prohibited from call access. The same principle can be applied in other countries.

As another example, in [Table 2], assuming that the highest priority operator in Country C is changed from C1 to C2, as described above, the roaming terminal accesses a call for location registration through a visited network of newly changed highest priority operator network C2. If it is determined that the case has been performed, RSCP 116 does not need to determine to request the transmission of the OTA SMS message to the roaming terminal. However, when the roaming terminal determines that the country C has performed a call connection for location registration through the visited network of the existing preferred provider network C1, the RSCP 116 determines that the roaming terminal is changed to the highest preferred provider network (C2 network). ), It is possible to determine the request for transmission of the OTA SMS message to the roaming terminal so as to make the highest priority call connection.

TABLE 2

country buisnessman Preferred Operator Prohibited Business RSCP operation Country C C1 Set Not set When the roaming terminal registers its location in C1, it requests OTA SMS transmission to update the preferred carrier network information of USIM card to C2. Country C C2 Not set Not set If the roaming terminal registers its location in C2, it is already registered in the preferred provider's network.

In response to the determination of the RSCP 116, when the OTA SMS transmission is required to the roaming terminal, the RSCP 116 requests the OTA SMS transmission to the UMC 118 (S221). Requests for transmission of OTA SMS may include service policy information, for example, changes in the Public Land Mobile Network (PLMN) (Change of Preferred Operator Network, Change of Prohibited Operator Network (Delete / Add), Or change the priority of at least one non-preferred provider network except for the preferred provider network.

Accordingly, the UMC 118 generates an OTA SMS including the change information of the service provider network in order to update the corresponding service policy information (S230), and goes through a process (S231) required for an SMS transmission request with the SMSC 117. Accordingly, the SMSC 117 inquires and receives the location of the roaming terminal from the HLR 114 (S232), thereby transmitting the corresponding OTA SMS message to the roaming terminal (S240).

Accordingly, the roaming terminal receiving the corresponding OTA SMS message through the SMSC may update the information of the overseas provider network used for accessing the call stored in the USIM card according to the OTA SMS message. The roaming terminal is able to perform roaming services of the required CS or PS domains by performing location registration using information of the overseas provider network updated in the USIM card.

As described above, the information of the overseas provider network stored in the USIM card may be updated through an OTA SMS message, but may be updated through a signaling channel of the CS domain, including an OTA message according to a protocol such as LMS and MMS as well as SMS. It is possible to update the corresponding information of the USIM card by using a message or the like as a control message. For example, when the UMC 118 receives a request for transmission of the control message from the RSCP 116, the control message is transmitted to the terminal and stored in the USIM card through a system that processes messages according to the above protocols. It is possible to update the information of the network of overseas operators.

3 is a block diagram illustrating a configuration of an apparatus 300 for updating access network information of a terminal for overseas roaming, which may be provided in the RSCP 116 according to an embodiment of the present invention.

Referring to FIG. 3, the apparatus 300 for updating roaming information for overseas roaming according to an embodiment of the present invention includes a carrier network extracting unit 310, a provider network change determining unit 320, and a memory storing unit 321. ), And the OTA transmission request unit 330.

The operator network extracting unit 310 receives the completion information of the location registration update during the process of performing the location registration update from the roaming terminal to the home network as in step S211 of FIG. Network information can be extracted. For example, the GSI 115 may receive and store information required for supporting the roaming terminal's IMSI number, the MSISDN, the MSC GT of the overseas network, and the HLR GT other roaming service of the home network, from the GLR 115 in the location registration update process. When transmitting a response message indicating that the location registration update process is completed, the network operator 310 extracts the response message, roaming based on the information received from the GLR 115, such as MSC GT of the overseas network The terminal may extract information about a pre-connected overseas operator network through a process of updating the location registration.

The operator network change determination unit 320 may determine whether the service policy for the roaming terminal is changed based on the extracted operator network information. The storage means 321 may store and manage the rank list of the preferred operator network, the operator network change determination unit 320 is a list of the preferred operator network and the operator network extraction unit 310 of the storage means 321 Through comparison with the extracted operator network information, it is possible to determine whether the roaming terminal has changed the priority of the overseas operator network used for call access for location registration. As described in the description of FIG. 2, the operator network change determination unit 320 changes the overseas operator network (eg, changes in the preferred operator network or changes of the prohibited operator network) by changing the roaming service policy. / Change), or change the priority of at least one non-preferred provider network except the preferred provider network, etc.), and accordingly the control message (eg. For example, it is possible to determine whether to request transmission of an OTA message using SMS, LMS, MMS, or a message using a signaling channel.

As the carrier network change determination unit 320 determines that the transmission request is necessary, the OTA transmission request unit 330 is a roaming terminal to update the service policy information (foreign carrier network information) managed in the USIM card of the roaming terminal. Requests UMC 118 to send the corresponding control message (eg, OTA SMS message).

4 is a diagram illustrating a process of updating access network information for overseas roaming in a mobile terminal 400 according to an embodiment of the present invention. Referring to FIG. 4, the mobile terminal 400 according to an embodiment of the present invention may include an SMS receiver 410, a card updater 420, and a USIM card 430.

The USIM card 430 may be detachable from a predetermined socket of the mobile terminal, and information related to the initiation of use of the USIM card 430 or the change of policy according to the OTA protocol for the use of the USIM card 430 may be an SMS message. (OTA SMS message) can be transmitted from the UMC 118, accordingly, the SMS receiver 410 receives it, the card updater 420 automatically stores or updates the information in the USIM card 430 can do.

The mobile terminal 400 may perform an outbound roaming service to the home network by performing a location registration update process through a channel assigned to the corresponding network based on the overseas operator network information stored in the USIM card 430 as described above. .

In particular, in the present invention, the location registration update in the home network (for example, RSCP) after the mobile terminal 400 performs a location registration update to the home network for roaming service (for example, see S211 of FIG. 2). Control message for changing the overseas operator network information based on self-determination based on the overseas operator network information used in the process (for example, OTA message using SMS, LMS, MMS, message using signaling channel, etc.) ) Can be sent (see FIG. 3). Accordingly, the UMC 118 operates and the mobile terminal 400 receives a corresponding control message (eg, an OTA message using SMS, LMS, MMS, or a message using a signaling channel) from a home network (eg, SMSC). ) May be updated and updated in the USIM card 430. In accordance with this process, the USIM card 430 includes a change in a foreign provider network (for example, a change in a preferred carrier network, a change in a prohibited operator network (delete / addition), or a preferred operator when the roaming service policy is changed). Real-time update information of at least one non-preferred operator network excluding the network, etc.). Accordingly, the mobile terminal 400 uses the updated overseas operator network information stored in the USIM card 430. Location registration updates and other CS and PS based roaming services will be available.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible. In the above description, a method of updating information on a provider network of a USIM card of a roaming terminal by using an OTA SMS transmission request to a UMC via RSCP when roaming from an overseas visited network to the home network has been described as an example. The above method may be applied to update various information managed in the USIM card of the terminal. For example, in the case of performing a location registration update in a terminal even in a domestic home network, a service change (eg, MSC GT, SGSN GT information, etc.) is used based on information used in the process of location registration update at this time. For example, a service using information managed on a USIM card for a service specialized in a region, and a change of a service requiring update of the corresponding information managed on a USIM card for a change of the specialized service, etc.) may be determined. And the information managed in the USIM card of the terminal by causing the UMC to transmit the corresponding message through the SMSC in response to the OTA SMS transmission request from the system on the network side (for example, RSCP or other subscriber management server) to the UMC according to this determination. (E.g., information managed on a USIM card for a service specific to that region, and an update is made to change that specific service. Required information, etc.). Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

1 is a diagram illustrating a mobile communication environment for OB roaming according to an embodiment of the present invention.

2 is a flowchart illustrating a method of updating access network information of a terminal for overseas roaming according to an embodiment of the present invention.

3 is a block diagram illustrating a configuration of an apparatus for updating access network information of a terminal for overseas roaming that may be provided in an RSCP according to an embodiment of the present invention.

4 is a diagram illustrating a process of updating access network information for overseas roaming in a mobile terminal according to one embodiment of the present invention.

Claims (12)

Performing, by the outbound roaming terminal, location registration or location registration update to the home network; Determining whether the roaming terminal changes the overseas provider network used by the roaming terminal for call access based on the overseas provider network information used in the location registration or location registration update in the intelligent network node of the home network; And An overseas service provider transmits a control message for the roaming terminal in the form of an OTA SMS message from the management center of the home network to the roaming terminal in response to a request for transmission from the intelligent network node of the home network according to the determination. Controlling to update the network information; In the determining step, the terminal information update method characterized in that the determination is performed by comparing the ranking list of the preferred operator network of the foreign countries managed by the storage means and the used overseas operator network information. The method of claim 1, The updating of the terminal information, characterized in that for updating the overseas operator network information managed in the USIM card according to the OTA SMS message. delete The method of claim 1, The determining may include determining whether to change the priority of the overseas provider network to which the roaming terminal is connected based on the used overseas provider network information. The method of claim 1, wherein the determining comprises: When the roaming terminal is connected to a network other than the preferred carrier network according to the used overseas operator network information, And the roaming terminal determines a request for transmission of the control message for making the highest priority call connection using the highest priority provider network. The method of claim 5, And determining that the control message includes information for classifying an overseas provider network used in the location registration or location registration update as a network for which call access is prohibited. delete delete delete An apparatus for updating terminal information of a home network for controlling performance of a communication service to a home network of an outbound roaming terminal, Receiving location registration completion information from the roaming terminal during the process of performing the location registration or location registration update to the home network of the outbound roaming terminal to extract the overseas operator network information used in the process of location registration or location registration update Operator network extracting unit; Storage means for managing a ranking list of overseas preferred business networks; A change determination unit for comparing the rank list of the preferred operator network with the extracted overseas operator network information and determining whether to change the overseas operator network used by the roaming terminal for call access; And A request unit for requesting transmission of a control message to the roaming terminal according to the determination; In response to the request, the control center for the roaming terminal is transmitted from the management center of the home network to the roaming terminal in the form of an OTA SMS message to control the roaming terminal to update the overseas provider network information used for call access. Terminal information updating device. delete delete

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