KR102235135B1 - Method for initialization of network access inofrmation in user device - Google Patents

Abstract

A method of initializing network access information of a user terminal is disclosed. The method of initializing network access information includes: transmitting, by a user terminal, an IMSI change request to an applet installed in a subscriber identification module; If the IMSI is changed by the applet, extracting the changed IMSI from the subscriber identification module; And accessing the network using the changed IMSI. Here, the applet may change the IMSI in response to the IMSI change request, and initialize network access information related to a network to which the user terminal has previously accessed.

Description

How to initialize network access information of user terminal {METHOD FOR INITIALIZATION OF NETWORK ACCESS INOFRMATION IN USER DEVICE}

The present invention relates to a method of initializing network access information stored in a USIM inserted in a user terminal when subscriber identification information is changed.

A user terminal subscribed to a telecommunication company in a specific country can access the network of a telecommunication company in another country. The user terminal may include a Home IMSI (International Mobile Subscriber Identification Number) related to a directly contracted provider and a Sponsor IMSI related to a sponsor contracted provider. Here, IMSI refers to a unique identifier requested from a user when a network operator registers a user terminal for a communication service.

At this time, if the user terminal is subscribed to the carrier X of country A and connects to the network of carrier Y of country B, the user terminal accesses the network of carrier Y by using Home IMSI or by using Sponsor IMSI. Suppose you can connect to Y's network.

If the network access information related to Sponsor IMSI exists in the user terminal even if the user terminal connected to the network of carrier Y using Sponsor IMSI is changed to Home IMSI, the user terminal is not the network access information related to the changed Home IMSI. Network access information related to the existing Sponsor IMSI has no choice but to access the network. Then, there is a problem in that the user terminal is billed at the communication cost of the sponsor operator, not the home operator.

Accordingly, there is a need for a method of charging the user terminal with an accurate charge for the use of the communication network by reflecting the change of the IMSI in the user terminal.

The present invention provides a method of initiating network access information related to a previously accessed network in response to a change in IMSI so that an accurate communication fee is charged to a user terminal.

The present invention provides a method for preventing an initialization error of network access information from occurring due to a malfunction of a user terminal by initializing network access information through an applet installed in a USIM rather than a user terminal.

A method of initializing network access information according to an embodiment of the present invention includes the steps of: transmitting, by a user terminal, a request to change International Mobile Subscriber Identification (IMSI) to an applet installed in a subscriber identification module; If the IMSI is changed by the applet, extracting the changed IMSI from the subscriber identification module; And accessing the network using the changed IMSI, wherein the applet changes the IMSI in response to the change request of the IMSI, and initializes network access information related to the network previously accessed by the user terminal. I can.

In the method of initializing network access information, the applet includes LOCI and PSLOCI (Packet Switched Location Information) including a last Registered Public Land Mobile Network (RPMN) and Temporary Mobile Subscriber Identity (TMSI) related to a network to which the user terminal has previously accessed. ) And network access information including a Forbidden Public Land Mobile Network (FPLMN) may be initialized.

In the method of initializing network access information, the user terminal may be able to access the network through any one of IMSI related to a home operator and IMSI related to a sponsor operator.

In the step of accessing the network using the changed IMSI in the method of initializing network access information, the subscriber identification module may access the network in consideration of whether there is network access information related to a network previously accessed.

A user terminal according to an embodiment of the present invention includes: a request transmission unit for transmitting an IMSI change request to an applet installed in the subscriber identification module; An IMSI extraction unit for extracting the changed IMSI from the subscriber identification module when the IMSI is changed by the applet; And a network connection unit for accessing a network using the changed IMSI, wherein the applet changes the IMSI in response to a change request of the IMSI, and initializes network access information related to a network previously accessed by the user terminal. can do.

In the user terminal, the applet includes LOCI, PSLOCI (Packet Switched Location Information), and FPLMN including a last Registered Public Land Mobile Network (RPMN) and Temporary Mobile Subscriber Identity (TMSI) related to a network to which the user terminal has previously accessed. Network access information including (Forbidden Public Land Mobile Network) can be initialized.

The user terminal may be able to access the network through any one of IMSI related to a home operator and IMSI related to a sponsor operator.

In the user terminal, the network connection unit may access a network in consideration of whether there is network access information related to a network previously accessed by the subscriber identification module.

According to an embodiment of the present invention, by initializing network access information related to a previously accessed network in response to a change in IMSI, an accurate communication fee may be charged to the user terminal.

According to an embodiment of the present invention, it is possible to prevent an initialization error of network access information from occurring due to a malfunction of the user terminal by initializing network access information through an applet installed in the USIM, not through the user terminal.

1 is a diagram illustrating a user terminal for initializing network access information according to an embodiment of the present invention.
2 is a diagram showing a detailed configuration of a user terminal according to an embodiment of the present invention.
3 is a diagram showing a result of selecting subscriber identification information according to an embodiment of the present invention.
4 is a diagram illustrating a method of initializing network access information according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a user terminal for initializing network access information according to an embodiment of the present invention.

Referring to FIG. 1, a universal subscriber identity module (USIM) may be inserted into the user terminal 100. In addition, a Home IMSI related to a home operator and a Sponsor IMSI related to a sponsor operator may be stored in the USIM of the user terminal 100.

Here, the Home IMSI provides information that allows the user terminal subscribed to the carrier A in the first country to access the network 101 of the carrier B in the second country as a home operator (communication A) when the user terminal moves to the second country. it means. In addition, Sponsor IMSI provides information that allows the user terminal subscribed to the carrier A in the first country to access the network 101 of the carrier B in the second country as a sponsor provider (communication B) when the user terminal moves to the second country. it means.

That is, when Home IMSI and Sponsor IMSI are stored in the USIM of the user terminal 100, the user terminal 100 may access the network 101 through the selected IMSI. In this case, since the network 101 is connected to the same network 101, but is connected by different operators, the fee according to the usage of the network 101 may be determined differently.

That is, when the user terminal 100 connects to the network 101 via Home IMSI, it is charged with the tariff system of carrier A, and when the user terminal 100 connects to the network via Sponsor IMSI, it may be charged with the tariff system of carrier B. .

Meanwhile, the user terminal 100 may select either Home IMSI or Sponsor IMSI according to the user's control. When the user terminal 100 is currently connected to the network 101 through Sponsor IMSI and changes to Home IMSI, the user terminal 100 may access the network 101 through Home IMSI.

However, when connected to the network 101 by Sponsor IMSI, since network access information related to Sponsor IMSI exists in the user terminal 100, it is still connected to the network 101 by Sponsor IMSI. So, when changing from Sponsor IMSI to Home IMSI, the network access information stored in the user terminal 100 needs to be initialized in response thereto.

For example, the user terminal 100 may transmit an IMSI change request to an applet installed in the USIM. Here, the applet is an application program composed of the Java language and can perform a simple function. Then, the applet may change the IMSI and initialize network access information related to the previously accessed network 101. Here, initializing the network access information may mean deleting the network access information or setting a value to 0.

Then, the user terminal 100 may attempt to access the network 101 after reading the changed IMSI in the USIM. In this case, since the network connection information related to the network 101 previously connected to the user terminal 100 has been initialized, the user terminal 100 can attempt to access the network 101 with the changed IMSI.

According to an embodiment of the present invention, since network access information is initialized in response to a change in IMSI, the user terminal 100 can access the network according to the change in IMSI. In addition, the applet installed in the USIM, not the user terminal, initializes the network access information, so that even if a malfunction of the user terminal occurs, the network connection information can be correctly initialized, and ultimately, the user terminal is charged a fee appropriate for the changed IMSI. Can be.

2 is a diagram showing a detailed configuration of a user terminal according to an embodiment of the present invention.

Referring to FIG. 2, the user terminal 100 may include a request transmission unit 201, an IMSI extraction unit 202, and a network connection unit 203. Here, the user terminal 100 may be able to access the network through any one of IMSI related to a home operator and IMSI related to a sponsor operator.

The request delivery unit 201 may transmit a request to change International Mobile Subscriber Identification (IMSI) to an applet installed in the subscriber identification module. The MULTI-IMSI applet may be installed in the subscriber identification module. Here, the applet may change the IMSI in response to the IMSI change request. In addition, the applet may initialize network access information related to a network previously accessed by the user terminal.

For example, the applet includes LOCI, PSLOCI (Packet Switched Location Information), and FPLMN (Forbidden Public Land) including the last Registered Public Land Mobile Network (RPMN) and Temporary Mobile Subscriber Identity (TMSI) related to the network to which the user terminal has previously accessed. Network access information including Mobile Network) can be initialized.

When the IMSI is changed by the applet, the IMSI extraction unit 202 may extract the changed IMSI from the subscriber identification module.

The network connection unit 203 may access the network using the changed IMSI. In this case, the network connection unit 203 may access the network in consideration of whether there is network access information related to the network previously accessed by the subscriber identification module. In this case, since the network access information has already been initialized according to the IMSI change, the network connection unit 203 can access the network using the changed IMSI instead of the previous network access information.

3 is a diagram showing a result of selecting subscriber identification information according to an embodiment of the present invention.

When a user terminal subscribed to a Korean telecommunication company A is located in China, the user terminal can roam and access the network of a Chinese telecommunication company B (China Unicom). At this time, since the user terminal has Multi-IMSI, it can access the network of carrier B in a roaming method using either Home IMSI (45006xxx...) or Sponsor IMSI (20404xxx...).

As shown in the screen 301 of FIG. 3, accessing the network of carrier B through Home IMSI is defined as direct roaming, and accessing the network of carrier B through Sponsor IMSI as shown in the screen 302 may be defined as sponsored roaming. have.

If RPMN or TMSI, which is the network access information generated when connecting to the network with Sponsor IMSI, is not initialized, the B communication company cannot know whether the IMSI has been changed in the user terminal, and the RPMN or TMSI still exists. It can be recognized as being connected to the network by IMSI. Then, there is a problem in that the user terminal is charged with the communication fee system set by the sponsor provider.

So, when the current user terminal is changed to Home IMSI from the sponsored roaming state connected to the Sponsor IMSI, the user terminal transmits the RPMN or TMSI, which is the network access information generated when the network is accessed through the Sponsor IMSI through the applet installed inside the USIM. Can be initialized.

Then, the user terminal can be changed from the screen 302 to the screen 301 because it is assumed that the user terminal is connected to the network of communication company B through Home IMSI. The user terminal may be charged with a communication fee system set in the home operator.

4 is a diagram illustrating a method of initializing network access information according to an embodiment of the present invention.

In step 402, the user terminal 400 may request an IMSI change from the applet 401. Here, the applet 401 may be installed in the USIM inserted into the user terminal 400.

In step 403, the applet 401 may change the IMSI according to the change request. Thereafter, in step 404, the applet 401 may initialize network access information related to a network to which the user terminal 400 has previously accessed.

Then, in step 405, the user terminal 400 may extract the changed IMSI by reading the USIM. In step 406, the user terminal 400 may attempt to access the network with the changed IMSI. Then, in step 407, the user terminal 407 may determine whether there is network access information related to a network that has been previously accessed in the USIM.

At this time, even if the user terminal 400 malfunctions, the application 401 installed in the USIM initializes the network access information, and thus the process proceeds to step 408 without proceeding to step 409. That is, the user terminal 400 may be charged a communication fee corresponding to the changed IMSI by accessing the network with the changed IMSI.

Methods according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and usable to those skilled in computer software.

As described above, although the present invention has been described by limited embodiments and drawings, the present invention is not limited to the above embodiments, and various modifications and variations from these descriptions for those of ordinary skill in the field to which the present invention pertains. This is possible.

Therefore, the scope of the present invention is limited to the described embodiments and should not be defined, but should be defined by the claims to be described later as well as those equivalent to the claims.

100: user terminal
101: network

Claims (8)

In the method of initializing network access information performed by a user terminal,
When the user terminal subscribed to a telecommunication company in a first country moves to a second country, receiving a roaming method selected by a user who has the user terminal to access the network of the telecommunication company in the second country by roaming-the The roaming method includes direct roaming to access the network of a telecommunication company in a second country using Home IMSI, which allows the user terminal to access a home operator according to a telecommunication company in the first country to which the user terminal is subscribed, and a sponsor according to the telecommunication company in the second country Including sponsored roaming to access the network of telecommunications companies in a second country using Sponsor IMSI to access as a business operator -;
The user terminal for charging the user terminal fee based on the selected roaming method based on the rate system of one of the carriers of the first country or of the carriers of the second country that can access the network of the carriers of the second country. Transmitting an International Mobile Subscriber Identification (IMSI) change request to an applet installed in the subscriber identification module;
If the IMSI is changed by the applet, extracting the changed IMSI from the subscriber identification module;
Accessing a network of a carrier in a second country by using the changed IMSI;
Determining a communication fee corresponding to the changed IMSI according to whether or not a network of a communication company in the second country is connected; And
Considering whether the IMSI connected to the network of the telecommunication company of the second country is Home IMSI or Sponsor IMSI, displaying roamed results of different user terminals according to the home operator or sponsor operator on the screen;
Including,
The above applet,
Change the IMSI in response to the change request of the IMSI, and initialize network access information related to the network to which the user terminal previously accessed,
The step of connecting to the network of the telecommunication company of the second country,
Check whether network access information related to the network to which the user terminal has previously accessed according to the IMSI change has been initialized,
When the network access information according to the initialization is deleted or has a value of '0', attempts to access the network of a carrier in a second country with the changed IMSI,
As the connection is attempted, it accesses the network of a communication company of a second country through the changed IMSI,
The step of determining the communication fee,
It is determined whether the operator who has accessed the network of the telecommunication company of the second country is a home operator or a sponsor operator,
A method of initializing network access information for differently determining a communication fee according to a network usage of a communication company in the connected second country by using the determined service provider's rate system. The method of claim 1,
The above applet,
LOCI, PSLOCI (Packet Switched Location Information), and FPLMN (Forbidden Public Land Mobile Network) including the last Registered Public Land Mobile Network (RPMN) and Temporary Mobile Subscriber Identity (TMSI) related to the network to which the user terminal has previously accessed. Network connection information initialization method for initializing the included network connection information. delete The method of claim 1,
The step of accessing the network using the changed IMSI,
A method of initializing network access information in which the subscriber identification module accesses a network by considering whether there is network access information related to a network previously accessed. In the user terminal,
When the user terminal subscribed to a telecommunication company in the first country moves to a second country, a roaming method to be accessed by roaming to the network of the telecommunication company in the second country is selected from the user holding the user terminal, and the selected roaming method is selected. Based on a roaming method, the user terminal for charging the user terminal is a subscriber with a service provider in the first country that can access the network of the communication company in the second country or a service provider in the second country. Request delivery unit for transmitting the IMSI change request to the applet installed in the identification module-The roaming method uses Home IMSI to access the home operator according to the telecommunication company of the first country to which the user terminal is subscribed. Including direct roaming to access the network of a carrier and sponsored roaming to access the network of a carrier of a second country by using Sponsor IMSI to access a sponsored operator according to the carrier of the second country;
An IMSI extraction unit for extracting the changed IMSI from the subscriber identification module when the IMSI is changed by the applet; And
A network connection unit that accesses the network of a telecommunication company in a second country by using the modified IMSI.
Including,
The above applet,
Change the IMSI in response to the change request of the IMSI, and initialize network access information related to the network to which the user terminal previously accessed,
The user terminal,
In consideration of whether the IMSI connected to the network of the telecommunication company of the second country is Home IMSI or Sponsor IMSI, the roaming results of different user terminals according to the home operator or sponsor operator are displayed on the screen,
The network connection unit,
Checks whether network access information related to a network to which the user terminal has previously accessed according to the IMSI has been initialized,
When the network access information according to the initialization is deleted or has a value of '0', attempts to access the network of a carrier in a second country with the changed IMSI,
As the connection is attempted, access to the network of the carrier of the second country through the changed IMSI,
Determine whether the operator who has accessed the network of the telecommunication company in the second country is a home operator or a sponsor operator,
A user terminal configured to differently determine a communication fee according to the network usage of the connected second country communication company using the determined service provider's rate system. The method of claim 5,
The above applet,
LOCI, PSLOCI (Packet Switched Location Information), and FPLMN (Forbidden Public Land Mobile Network) including the last Registered Public Land Mobile Network (RPMN) and Temporary Mobile Subscriber Identity (TMSI) related to the network to which the user terminal has previously accessed. User terminal for initializing the included network access information. delete The method of claim 5,
The network connection unit,
A user terminal that accesses a network in consideration of whether there is network access information related to a network previously accessed by the subscriber identification module.

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