KR101187361B1 - Method and apparatus for processing location registration of outbound roaming subscriber - Google Patents

Abstract

The present invention relates to a normal location registration processing method and apparatus for overseas roaming subscribers subscribed to the data roaming blocking service.
According to the present invention, a normal roaming location registration processing method of a subscriber who is roaming overseas subscribed to a data roaming blocking service in a mobile communication system, the method comprising: (a) receiving a packet network location registration request from an overseas roaming mobile terminal; (b) performing packet network location information update processing to the home location register according to the received packet network location registration request, and then determining whether or not to block data roaming of the corresponding subscriber; (c) in the case where the determination result is that the roaming subscriber is blocked, inquiring the subscriber profile of the roaming subscriber to generate a subscriber information transmission message, and deleting the packet network subscription information data from the generated message; And (d) transmitting the subscriber information transmission message generated by missing the packet network subscription information data to the visited network roamed by the overseas roaming mobile terminal.

Description

Location and apparatus for processing location registration of outbound roaming subscriber}

The present invention relates to a location registration processing method for an overseas roaming subscriber, and more particularly, to a normal location registration processing method and apparatus for an overseas roaming subscriber subscribed to a data roaming blocking service.

With the development of mobile communication technology, mobile communication subscribers can be provided with mobile communication service in the same way as in home network by bilateral agreement and system interworking between mobile operators when visiting overseas. In particular, recently, 3G communication service has been started, and as the user's terminal can be used as it is abroad without renting or changing the terminal, the use of overseas roaming service is increasing.

On the other hand, it provides data roaming blocking service that restricts data roaming and data services from being used for overseas roaming subscribers. This is a service that is provided for subscribers who have roamed overseas and do not want to receive data services through other overseas communication networks, or whose data services cannot be used while roaming overseas. In other words, most domestic customers who do not need data service when they roam overseas even though they receive data service or do not want to receive data service because of charges and quality.

As such, in the case of the subscriber or mobile communication terminal subscribed to the data roaming blocking service during overseas roaming, if a data roaming location registration or packet network location registration is attempted at the SGSN of the overseas visited network, the home location register of the home network Checks the data roaming blocking status of the subscriber, and transmits a location registration disallowed message or a location registration error message and blocks data roaming location registration. That is, a method of blocking data roaming is used by blocking data roaming location registration.

FIG. 1 illustrates a location registration procedure for an overseas roaming subscriber whose data roaming is blocked. As shown in FIG. 1, a subscriber who is blocked from data roaming attempts a packet network location registration request to a home location register of a home network through an SGSN of a visited network.

Then, the home location register inquires whether or not the data roaming block of the subscriber, and confirms that the subscriber is registered in the data roaming blocking service (S2).

The home location register confirms that the subscriber is a data roaming block, stops the location registration process, and transmits a packet network location response message including location registration information and location registration error information to the roaming visited network SGSN. (S3)

Thus, when the data roaming blocking subscriber attempts to register a location overseas, a number of cases of location registration cannot be performed because an error message is received when the GPRS location registration is attempted first. That is, even if the customer subscribed to the data roaming blocking service fails to process the GPRS (packet network) location registration itself, even the voice location registration in the terminal is not properly made. In this case, conventionally, the mobile terminal has to manually set the location registration mode to CS (not PS) to perform location registration again.

The present invention has been made to solve this problem, even if a subscriber roaming abroad is registered in the data roaming blocking service, the location registration is improved structure to properly process the location registration processing and block data roaming only when packet network location registration request Its purpose is to provide a treatment method and apparatus.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Further, objects and advantages of the present invention can be realized by the means and the combination shown in the appended claims.

In order to achieve the above object, the method for processing location registration of an overseas roaming subscriber according to the present invention is a method for processing a normal roaming location registration of an overseas roaming subscriber subscribed to a data roaming blocking service in a mobile communication system. Receiving a packet network location registration request from an overseas roaming mobile terminal; (b) performing packet network location information update processing to the home location register according to the received packet network location registration request, and then determining whether or not to block data roaming of the corresponding subscriber; (c) in the case where the determination result is that the roaming subscriber is blocked, inquiring the subscriber profile of the roaming subscriber to generate a subscriber information transmission message, and deleting the packet network subscription information data from the generated message; And (d) transmitting the subscriber information transmission message generated by missing the packet network subscription information data to the visited network roamed by the foreign roaming mobile terminal.

According to another aspect of the present invention, as a normal roaming location registration processing device of a subscriber who is roaming overseas subscribed to the data roaming blocking service in a mobile communication system, storing whether the roaming subscribers subscribe to the data roaming blocking service and whether data roaming blocking information is stored part; A receiving unit for receiving a packet network location registration request from an overseas roaming mobile terminal; In accordance with the received packet network location registration request, packet network location information update processing is performed, and the storage unit checks whether or not data roaming is blocked by the storage unit. A location registration control unit for generating a packet network subscription information data from the generated message; And a message transmission unit for transmitting the subscriber information transmission message generated by the location registration controller to a visited network roamed by the mobile terminal requesting location registration.

According to the present invention, when a data roaming blocking subscriber attempts to register a location of a packet network (GPRS), it performs a normal packet network location registration process, and then transmits a modified subscriber information transmission (ISD) message that deletes information necessary for data roaming. Thus, while blocking data roaming and data service use, packet network location registration provides an effect that can be normally processed.

In addition, the subscriber network does not need to operate the mobile terminal directly, the packet network location registration process is normally performed to increase user convenience, and the data roaming blocking process, along with a notification SMS to inform the fact that the customer's complaint elements by sending It provides a preventable effect.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention below, And should not be construed as limiting.
1 is a diagram illustrating a location registration processing procedure for a foreign roaming subscriber whose data roaming is blocked.
2 is a diagram illustrating a configuration of a roaming system implemented with a method for processing location registration of an overseas roaming subscriber according to an embodiment of the present invention.
3 is a signal flow diagram illustrating a location registration processing method of an overseas roaming subscriber according to an embodiment of the present invention.
4 is a flowchart illustrating a method of performing location registration processing of an overseas roaming subscriber in a home network according to an embodiment of the present invention.
5 is a diagram illustrating a configuration of a location registration processing device of an overseas roaming subscriber according to an embodiment of the present invention.
6 is a diagram illustrating an example of packet network subscription information data deleted in an ISD message according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

2 is a diagram illustrating a configuration of a roaming system implemented with a method for processing location registration of an overseas roaming subscriber according to an embodiment of the present invention.

Referring to the drawings, the roaming system according to the present embodiment includes a home network 10 and a visited network 20, and subscribers of the home network 10 roam to the visited network 20 to receive a communication service. . The visit network 20 is an overseas network.

In FIG. 2, the mobile terminal 400 is a communication terminal having a voice call, a video call, a text message transmission and reception, a data service, and a global roaming function. In this embodiment, the mobile terminal 400 is a terminal roaming to the visited network 20 as a terminal of a subscriber to the home network 10.

Referring to FIG. 2, the home network 10 includes a gateway location register (GLR) 200 and a home location register (HLR) 100. A wireless access network (access network, base station, base station controller, etc.), a switch (MSC), a packet network switching node (SGSN), a message center, etc. are included together, but the description thereof will be omitted here.

The gateway location register 200 serves as a gateway for the location registration processing of the mobile terminal 400 roaming from the home network 10 to the visited network 20, and from the roaming mobile terminal 400, a packet network or a voice network (line network). When a location registration request is received, the device transmits a location registration request to the home location register 100 that accommodates the roaming mobile terminal 400.

The gateway location register 200 downloads the subscriber profile (subscriber information transmission message, ISD) from the home location register 100 and transmits it to the exchange 310 of the roaming mobile terminal 400 side. In addition, the gateway location register 200 relays the exchange of routing information between the home location register 100 of the home network 10 and the exchanger of the visited network 20, or between the home location register of the visited network and the exchanger of the home network.

The home location register 100 manages the profile of the mobile subscriber as well as the current location information of the mobile terminal. The home location register 100 stores the location information of the roaming mobile terminal 400 when a location registration request from the roaming mobile terminal 400 comes up through the gateway location register 200 and stores a subscriber profile in the gateway location register 200. Down.

The home location register 100 serves to provide routing information for the mobile terminal by using the stored location information and the subscriber profile of the mobile terminal. That is, when the routing information request for a specific mobile terminal is received from the originating exchange, the home location register 100 checks the destination exchange using the location information of the mobile terminal, and obtains the routing number from the destination exchange. Transmit to originating exchange.

In the present invention, the home location register 100, in the case of the packet network location registration request of the location registration request coming from the visited network, checks whether or not the data roaming block of the subscriber who requested the location registration, if the data roaming block subscriber The registration process is normally performed, but the process of deleting and transmitting packet network subscription information data (gprsSubscriptionData), which is information necessary for data roaming access, from the subscriber information transmission message (ISD: Insert Subscriber Data) transmitted to the visited network after the location registration processing is performed. do.

That is, when a subscriber who has roamed abroad subscribes to the data roaming blocking service or the data roaming is blocked, the home location register 100 according to the present invention requests the packet network location registration. Instead of failing, the packet network location registration process is performed normally and only blocks the data roaming service of the subscriber. In other words, in the case of a data roaming blocking subscriber, the location registration processing according to the packet network location registration request is normally performed, and after deleting information necessary for data roaming access or data service use when transmitting an ISD message according to location registration processing, Transmission processing ensures that the subscriber no longer has data roaming or data services on the visited network.

Therefore, even if the data roaming blocking subscriber, the location registration processing according to the packet network location registration request can be performed normally, reducing the inconvenience of the customer. In addition, after the normal packet network location registration processing for the data roaming blocking subscriber, and after the control process to block data roaming, a notification message for data roaming blocking is sent to the subscriber by SMS to prevent customer complaints.

To this end, the home location register 100 according to the present invention includes a DB in which information of a data roaming blocking subscriber is stored, and the DB stores and manages data roaming blocking subscribers in the form of an operator determined barring (ODB) parameter. In addition, the packet network location registration request of the overseas roaming mobile station transmitted from the visited network may form a GPRS Update Location.

When the exchange of the visited network 20 receives a location registration request from the roaming mobile terminal 400 roaming into the visited network 20, the exchanger transmits it to the gateway location register 200 of the home network 10, and further, the roaming mobile terminal. When the originating call is received from the 400, before the incoming call processing (for example, the call processing through the international telephone network), the service request message is transmitted to the roaming SCP to perform the intelligent network service processing for the roaming subscriber.

In addition, the switch of the visited network 20 is divided into a circuit network switch (MSC) 310 and a packet network switch or a packet network switch node (SGSN: 320), and the roaming mobile station 400 is connected to the circuit network switch 310 to be located. In the case of requesting registration, the circuit network location registration request is transmitted to the location register 100 of the home network 10, and in the case of requesting location registration by accessing the packet network switching node 320, the packet network location registration request is located in the location of the home network 10. Is sent to the register 100.

Hereinafter, a procedure for performing location registration processing for an overseas roaming subscriber in the roaming system of FIG. 2 will be described with reference to FIG. 3.

3 is a signal flow diagram illustrating a location registration processing method of an overseas roaming subscriber according to an embodiment of the present invention.

In this embodiment, a description will be made on the assumption that a mobile terminal roaming to an overseas visited network attempts to register a packet network location while being connected to a packet network switching node (SGSN).

Referring to the drawing, first, a mobile terminal roaming to a visited network accesses a SGSN and requests for location registration. In this case, when the roaming mobile terminal 400 generates a location registration requirement such as power-on, it may be described as a state in which a location registration request is transmitted to the SGSN of the visited network 20 through the wireless access network. (S101)

SGSN of the visited network 20 received the location registration request confirms that the subscriber is a subscriber of the home network 10 based on the identification number of the roaming mobile terminal 400, and registers the packet network location with the gateway location register 200 of the home network 10. GPRS Update Location) request is transmitted (S102).

The gateway location register 200 having received the packet network location registration request from the SGSN of the visited network 20 forwards the packet network location registration request to the home location register of the home network 10 (S103).

Upon receiving the packet network location registration request, the home location register 100 updates the location information of the corresponding subscriber according to the packet network location registration request, checks whether the data roaming is blocked by the subscriber, and confirms that the subscriber is the data roaming blocking target. In this case, it is checked whether data roaming is blocked by referring to the ODB parameter registered in the home location register related to the data roaming blocking service. (S104, S105)

After confirming that the data roaming blocking subscriber, the home location register proceeds to inquire the subscriber profile of the subscriber in order to generate the subscriber information transmission (ISD) message according to the location registration process to the visited network.

After inquiring the subscriber profile, the home location register generates an ISD message including the inquired subscriber profile. In this case, the procedure of generating a modified ISD message by deleting packet network subscription information data, which is information necessary for data roaming connection, is included in the ISD message. Is done. Meanwhile, in addition to the deletion processing of the packet network subscription information data, the ISD message normally includes a subscriber status information message and communication service list information for service authentication according to the inquired subscriber profile (S107).

In more detail, the subscriber status information message is a subscriberStatus ODB message including an ODB parameter, and the communication service list information may include, for example, a teleserviceList message.

Here, the packet network subscription information data to be deleted may be a gprsSubscriptionData item of the packet network ISD message. An example of the packet network subscription information data deleted in the ISD message is shown in FIG. 6.

As shown in FIG. 6, the packet network ISD message generated by the home location register includes a subscriber status information message and communication service list information (A), and together with the packet network subscription information data (D). In the case of the data roaming blocking target subscriber, the packet network subscription information data D is deleted. The packet network subscription information data D thus deleted includes information necessary for data roaming and data service use, and PDP context information as shown in the drawing.

After performing the location registration process, the home location register performs the procedure of transmitting the modified ISD message to the SGSN of the visited network 20 through the gateway location register. (S108, S109).

The SGSN of the visited network receives the ISD message and completes the location registration by registering and storing the subscriber profile in the visited location register (S110).

On the other hand, the location registration is completed, but the information required for data roaming and data service use is missing from the profile of the subscriber, the roaming mobile terminal of the subscriber is not possible to maintain data roaming and data access processing. That is, data service blocking control according to the data roaming blocking service is normally performed (S111).

As described with reference to FIG. 3, when a foreign roaming subscriber who subscribes to a data roaming blocking service registers a location such as powering on a roaming mobile terminal for the first time by moving to an overseas visiting network, the location registration is performed through SGSN of the visiting network. In case of attempt, the home location register of the home network performs normal location registration update processing according to the packet network location registration request received through SGSN, and then confirms that the subscriber is a data roaming blocking subscriber, and thus, data roaming and Message modification processing for deleting information necessary for data service is performed, and the modified ISD message is transmitted to the visited network. Accordingly, subscribers roaming the visited network are normally registered in the network but the data roaming service is still blocked. That is, the problem that the packet network location registration process of the data roaming blocking subscribers failed fundamentally.

4 is a flowchart illustrating a method of performing location registration processing of an overseas roaming subscriber in a home network according to an embodiment of the present invention.

Referring to FIG. 4, first, a procedure of receiving a location registration request signal from an overseas roaming terminal is performed.

Check whether the subscriber is roaming to voice network (line network, CS) or data network (packet network, PS) through the location registration request signal. At this time, when the data network roams, a packet network location registration request signal in the form of GPRS Update Location is received, thereby confirming that the data network is roaming (S202).

As a result of the check, when a voice location registration request is attempted while roaming on the voice network, a general voice network location registration process is performed.

On the other hand, when the packet network location registration request is attempted while roaming on the data network, the home location register first performs packet network location information update processing of the subscriber (S203).

After the normal location information update process, the procedure to determine whether the data roaming of the subscriber is blocked. In this case, the discrimination process is performed by referring to the ODB parameter registered in relation to the data roaming blocking service in the blocked subscriber information DB provided in the home location register (S204).

If it is confirmed that the data roaming is a blocked subscriber, a procedure for generating a modified ISD message is performed by deleting the packet network subscription information data during the ISD message generation process. That is, a modified ISD message is generated in which the gprsSubscriptionData item in the ISD message is deleted (S205).

The modified ISD is transmitted to the SGSN of the visited network to complete the location registration process in the home network. In the visited network, location registration processing may be performed through the transmitted ISD message, but since data necessary for data roaming is deleted, data roaming and data service are not provided to the corresponding subscriber (S206).

In addition, by performing a procedure of sending an SMS message to inform the subscriber that the data roaming block is blocked, the procedure to reduce the inconvenience of the customer proceeds (S207).

On the other hand, if the subscriber is not blocked from roaming data, a general ISD message is generated and a normal ISD message is transmitted to the visited network. Through this, the subscriber is provided with normal location registration processing and normal data roaming and data services. (S221, S222)

5 is a diagram illustrating a configuration of a location registration processing device of an overseas roaming subscriber according to an embodiment of the present invention. The location registration processing device of the overseas roaming subscriber with reference to FIG. 5 may be mounted in the home location register 100 of FIG. 2.

As shown in FIG. 5, the location registration processing apparatus 100 of an overseas roaming subscriber includes a location registration request receiver 110, a location registration controller 120, an ISD transmitter 130, an SMS sender 140, Blocking subscriber information DB 150 and the like.

The location registration request receiver 110 requests a location registration from the gateway location register 200 of the home network 10 as the overseas roaming mobile terminal 400 attempts to register a location in the SGSN 320 of the overseas visit network 20. And receives the location registration request to the location registration control unit 120.

When the location registration request is transmitted from the location registration request receiving unit 110, the location registration control unit 120 performs location information update processing of the roaming mobile terminal 400, queries the subscriber profile, and sends an ISD message to the visited network. Create At this time, if the location registration request signal is a packet network location registration request, it checks whether or not the data roaming of the corresponding subscriber is blocked.In case of the blocking target, packet network subscription information data (ie, information necessary for data roaming and data service, etc.) is generated from the generated ISD message. gprsSubscriptionData) Deletes the item and transforms the ISD message.

The ISD transmitter 130 transmits the ISD message generated by the location registration controller 120 to the visited network of the subscriber who requested the location registration. In this case, the modified ISD message will be transmitted in case of a data roaming blocking subscriber, and a normal ISD message will be transmitted in case of a normal subscriber.

If it is determined that the subscriber registered by the location registration controller 120 is a data roaming blocking subscriber, the SMS sending unit 140 performs a process of sending and sending a guide message indicating that data roaming and data service are being blocked by SMS. do. An example of the notification message is "[Notification] You are currently subscribed to the data roaming protection service and your data service is not available. Please contact customer service to use the data service."

The blocking subscriber information DB 150 stores whether the roaming subscribers subscribe to the data roaming blocking service and the data roaming blocking information, and is referred to when the location registration control unit 120 determines the data roaming blocking subscriber. In addition, the blocked subscriber information DB 150 includes ODB parameters registered in the home location register in connection with the data roaming blocking service.

The method of the present invention as described above may be embodied as a program and stored in a computer-readable recording medium (such as a CD-ROM, a RAM, a ROM, a floppy disk, a hard disk, or a magneto-optical disk).

While the specification contains many features, such features should not be construed as limiting the scope of the invention or the scope of the claims. In addition, the features described in the individual embodiments herein may be combined and implemented in a single embodiment. Conversely, various features described herein in a single embodiment may be implemented in various embodiments individually or in a suitable subcombination.

It is to be understood that, although the operations have been described in a particular order in the figures, it should be understood that such operations are performed in a particular order as shown, or that a series of sequential orders, or all described operations, . In some circumstances, multitasking and parallel processing may be advantageous. It should also be understood that the division of various system components in the above embodiments does not require such distinction in all embodiments. The above-described program components and systems can generally be implemented as a single software product or as a package in multiple software products.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

10: home network 20: visit network
100: home location register 200: gateway location register
310: visited network switch 320: visited network packet exchange node
400: roaming mobile terminal

Claims (14)

A method for processing a normal roaming location registration of a subscriber who is roaming overseas who is subscribed to a data roaming blocking service in a mobile communication system,
(a) receiving a packet network location registration request from an overseas roaming mobile terminal;
(b) performing packet network location information update processing to the home location register according to the received packet network location registration request, and then determining whether or not to block data roaming of the corresponding subscriber;
(c) in the case where the determination result is that the roaming subscriber is blocked, inquiring the subscriber profile of the roaming subscriber to generate a subscriber information transmission message, and deleting the packet network subscription information data from the generated message; And
and (d) transmitting the subscriber information transmission message generated by missing the packet network subscription information data to the visited network roamed by the overseas roaming mobile terminal. The method of claim 1,
In the packet network subscription information data missing from the subscriber information transmission message,
A location registration processing method for an overseas roaming subscriber, characterized by including information necessary for data roaming access. The method according to claim 1 or 2,
The subscriber information transmission message,
A location registration processing method for an overseas roaming subscriber, characterized in that the message is an ISD (Insert Subscriber Data) message. The method of claim 3, wherein
The packet network subscription information data,
And a gprsSubscriptionData information included in the ISD message format. The method of claim 3, wherein
In the ISD message generated in step (c),
A method for processing location registration of an overseas roaming subscriber, comprising subscriber status information message for service authentication and communication service list information. The method of claim 5, wherein
Subscriber status information message for the service authentication,
SubscriberStatus ODB message including ODB (Operator Determined Barring) parameter registered in the home location register related to the data roaming blocking service,
The communication service list information,
A location registration processing method for an overseas roaming subscriber, which is a teleserviceList message. The method according to claim 1 or 2,
The packet network location registration request is a GPRS Update Location request. The method according to claim 1 or 2,
After step (d) above,
And transmitting a guide message indicating that data roaming according to the data roaming blocking service is blocked to the overseas roaming mobile terminal. The method according to claim 1 or 2,
Step (c) and (d),
(c-1) if the data roaming is not blocked as a result of the determination, querying a subscriber profile of the roaming subscriber and generating a normal subscriber information transmission message; And
and (d-1) transmitting the subscriber information transmission message including the packet network subscription information data to the visited network roamed by the overseas roaming mobile terminal. As a normal roaming location registration processing device of a subscriber who is roaming overseas subscribed to data roaming blocking service in a mobile communication system,
A storage unit in which roaming subscribers subscribe to data roaming blocking service and data roaming blocking information;
A receiving unit for receiving a packet network location registration request from an overseas roaming mobile terminal;
In accordance with the received packet network location registration request, packet network location information update processing is performed, and the storage unit checks whether or not data roaming is blocked by the storage unit. A location registration control unit for generating a packet network subscription information data from the generated message; And
And a message transmitter configured to transmit the subscriber information transmission message generated by the location registration controller to a visited network roamed by the mobile terminal requesting location registration. 11. The method of claim 10,
Subscriber information transmission message generated by the location registration control unit,
Insert Subscriber Data (ISD) message.
The packet network subscription information data deleted from the ISD message is
And gprsSubscriptionData information, which is information required for data roaming access included in the ISD message format. The method of claim 11,
In the ISD message missing gprsSubscriptionData information generated by the location registration controller,
And a subscriberStatus ODB message including an ODB (Operator Determined Barring) parameter registered in a home location register in association with a data roaming blocking service, and a teleserviceList message. The method of claim 10 or 11,
The location registration control unit,
And checking the subscriber's data roaming block, and if the subscriber is not a blocking subscriber, looks up the subscriber profile of the roaming subscriber and generates a subscriber information transmission message without missing the packet network subscription information. The method of claim 10 or 11,
If the location registration control unit is identified as a data roaming blocking subscriber,
And a service notification unit for transmitting a guide message indicating that data roaming according to the data roaming blocking service is blocked to the overseas roaming mobile terminal of the subscriber.

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