KR100990243B1

KR100990243B1 - Universal subscriber information storage device for managing remotely subscriber information file using wireless network and method thereof

Info

Publication number: KR100990243B1
Application number: KR20080068594A
Authority: KR
Inventors: 이형진
Original assignee: 주식회사 케이티
Priority date: 2008-07-15
Filing date: 2008-07-15
Publication date: 2010-10-29
Also published as: KR20100008162A

Abstract

The present invention relates to a general-purpose subscriber information storage device managed through a wireless communication network at a remote location and a subscriber information file management method using the same.

According to the present invention, the universal subscriber information storage device is a subscriber information file is defined that can be accessed through a wireless communication network at a remote location, and stores an access declaration file configured to enable further definition of the subscriber information file via a wireless communication network at a remote location. When the access request for the subscriber information file is received through the wireless communication network from the storage unit and the remote site, the controller checks whether the access request subscriber information file is defined in the access declaration file. Include.

As such, new subscriber information files can be accessed remotely through a wireless communication network, and thus, a universal subscriber information storage device can be flexibly implemented to allow additional access in addition to international standards.

UICC, OTA, EF

Description

Universal subscriber information storage device for managing remotely subscriber information file using wireless network and method

The present invention relates to a general-purpose subscriber information storage device managed through a wireless communication network at a remote location and a subscriber information file management method using the same. More particularly, the present invention relates to an apparatus and method for managing subscriber information files stored in a universal subscriber information storage device using an over the air (OTA) technology.

BACKGROUND OF THE INVENTION In accordance with the development of mobile communication technology, a general subscriber information storage device is being applied to the mobile communication terminals that are currently released so that a user can use a mobile communication service more conveniently.

The universal subscriber information storage device may be plugged in and disconnected from the mobile communication terminal. Accordingly, when the universal subscriber information storage device is separated from the user's mobile communication terminal and inserted into another mobile communication terminal, the service stored in the universal subscriber information storage device can be provided through the new mobile communication terminal.

However, the subscriber information stored in the universal subscriber information storage device may be changed according to the needs of the user or at the request of the mobile communication network operator.

OTA (Over The Air) service is a technology that can manage subscriber information stored in the universal subscriber information storage device through a wireless communication network at a remote location.

In general, the general subscriber information storage device stores subscriber information in the form of an element file (EF).

1 is a diagram illustrating a conventional element file structure. At this time, description of the components of the general element file other than the access authority information is omitted.

As shown in FIG. 1, the element file 10 includes access condition information 12. The access authority information 12 may be configured as a READ 12a, an UPDATE 12b, a DEACTIVATE 12c, and an ACTIVATE 12d state. Only the operation according to the above is allowed in the corresponding element file 10.

Conventionally, a setting value is specified in each element file 10 such as 'ADM3' in the UPDATE 12b item of the access authority information 12 so that it can be changed later by the OTA technique. Then, the OTA processing module of the general-purpose subscriber information storage device can access only the element file 10 set as 'ADM3'.

By the way, the access right information of the normal element file 10 is first recorded at the time of manufacture or sale by the mobile communication network provider. Therefore, in principle, it is impossible to change the element file 10 that is initially set to be inaccessible by the OTA technology so that it can be accessed later by the OTA technology.

2 is a diagram showing a conventional reference structure of access authority information.

As shown in FIG. 2, the plurality of different element files 10, 20, and 30 may refer to access authority information defined in the access authority reference element file EF _ARR 40. That is, as shown in FIG. 1, instead of defining access authority information in each element file 10, 20, and 30, access authority information is defined in a separate file and referred to.

The access authority reference element file (EF _ARR ) 40 includes a plurality of records in which different access authority states are defined. Each of the element files 10, 20, and 30 links records in which their access authority states are defined.

At this time, the access authority state defined in each record of the access authority reference element file 40 can be changed later. However, if you change the access permission status defined for each record, the change is applied to all the element files that reference that record. Therefore, changes to some element files are difficult.

In addition, in order to change the access right information of the element files 10, 20, 30 using the access right reference element file 40, it is necessary to know all the access right information of each of the element files 10, 20, 30. . However, access authority information of the element files 10, 20, and 30 is manufacturer's jurisdiction. Therefore, the user only needs to know whether the access using the OTA technology, it can be seen that it is almost impossible for the user to know all the access authority information of each of the element files (10, 20, 30).

That is, as described with reference to FIGS. 1 and 2, in the related art, since it is difficult to change the access right information specified for an element file at the time of manufacture, the OTA technology except for the element file defined at the time of ordering of the first universal subscriber information storage device There is a problem that you cannot define a new element file that can be accessed. However, as the functions of mobile communication terminals and services of mobile carriers are complicated and diversified, the need for OTA is also increasing. As a result, the change of the subscriber information is also inevitable, and thus, there is a considerable need for changing the access authority state for the element file in which the subscriber information is stored.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a general-purpose subscriber information storage device and a subscriber information file management method using the same, which can be managed through a wireless communication network at a remote location where access rights information of a subscriber information file can be changed.

In order to achieve the above problems, the general-purpose subscriber information storage device according to the characteristics of the present invention,
A general-purpose subscriber information storage device for storing subscriber information files for a mobile communication service managed through a wireless communication network at a remote location, the subscriber information file having access rights set to be accessible through a wireless network at a remote location among the subscriber information files. A storage unit for storing the access declaration file in which they are defined; And when an access request for a specific subscriber information file is received, check whether the specific subscriber information file is defined in the access declaration file, and if so, access the specific subscriber information file, and if not defined, And a control unit for accessing the specific subscriber information file after acquiring access rights by further defining the specific subscriber information file in the access declaration file.

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In addition, the subscriber information file management method according to an aspect of the present invention,
A method of managing subscriber information files by a general subscriber information storage device for storing subscriber information files for a mobile communication service managed through a wireless communication network at a remote location, the method comprising: (a) a specific subscriber information file via a wireless communication network at the remote location; Receiving a request for access to the server; (b) whether the particular subscriber information file is defined in an access declaration file, wherein the access declaration file is defined among subscriber information files in which subscriber information files are defined that have access rights defined for access over a wireless network at a remote location; Confirming; (c) accessing the specific subscriber information file if the specific subscriber information file is defined in the access declaration file; (d) if the specific subscriber information file is not defined in the access declaration file, receiving a request for updating the access declaration file from the remote location and further defining the specific subscriber information file in the access declaration file; And (e) accessing the specific subscriber information file defined in addition to the access declaration file to which access rights have been obtained.

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According to the present invention, a separate access declaration file in which subscriber information files accessible by using the OTA technology is defined may be implemented, and the contents of the subscriber information files defined in the access declaration file can be changed later using the OTA technology. do. Accordingly, OTA can be additionally enabled for new subscriber information files, and thus the general subscriber information storage device can be flexibly implemented to allow additional access in addition to international standards.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. In addition, terms such as "... unit" described in the specification means a unit for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software.

Now, a general subscriber information storage device and a subscriber information file management method using the same will be described in detail with reference to the accompanying drawings.

Here, a technology for managing subscriber information through a wireless communication network in a remote location may be implemented in various standards, but in an embodiment to which the currently applied OTC technology commonly referred to as 'OTA' is commonly used. Explain.

3 is a block diagram of an entire system for managing subscriber information through a wireless communication network at a remote location according to an embodiment of the present invention.

As shown in FIG. 3, the entire system for managing subscriber information through a wireless communication network at a remote location includes a general-purpose subscriber information storage device 100, a mobile communication terminal 200, and an OTA server 300.

The universal subscriber information storage device 100 stores subscriber information for receiving a service provided by a mobile network operator to which a user subscribes. The universal subscriber information storage device 100 may be implemented as a universal integrated circuit card (UICC) in the form of an integrated circuit that can be attached to and detached from the mobile communication terminal 200. This universal subscriber information storage device 100 is a major component of the Universal Mobile Telecommunications System (UMTS). The universal subscriber information storage device 100 is an advanced form of a subscriber identity module (SIM) card, a SIM card widely used in the European Global System for Mobile Communication (GSM), and a wideband code division multiple (W-CDMA). Universal Subscriber Identity Module (USIM) cards used in Access (User), User Identity Module (UIM) cards that can be used to apply SIM cards to CDMA, and Removable User Identity Module (RUIM) cards are used.

At this time, the general-purpose subscriber information storage device 100 is at least one classified under a service and an application under a master file (MF: MF) which functions as a root file. Dedicated file of DF (hereinafter referred to as 'DF') is implemented. The lower part of the DF includes at least one elementary file (EF) for storing subscriber information such as information necessary for driving a mobile communication terminal, subscriber-specific personal information, and communication network information.

Here, the EF file may be recorded for the first time in the manufacture or sale of the universal subscriber information storage device so that its contents may be changed while the user is using it.

In addition, the EF file containing the communication network information in the EF file may be constantly changed periodically while power is supplied to the mobile communication terminal. These EF files are set by the service provider to be changed using OTA technology. For example, Mobile Station International ISDN Number (MSSI), Operator controlled PLMN selector with Access Technology (OPLMNwAcT), and Forbidden Public Land (FPLMN). Mobile Network) Etc.

The mobile communication terminal 200 is coupled to the universal subscriber information storage device 100 and performs a mobile communication service using subscriber information stored in the universal subscriber information storage device 100. The mobile communication terminal 200 performs data transmission and reception with the universal subscriber information storage device 100 so that the OTA server 300 may manage subscriber information stored in the universal subscriber information storage device 100.

The OTA server 300 transmits information related to a mobile communication service to the mobile communication terminal 200 through the mobile communication network by using the OTA technology. Information related to the mobile communication service includes information values, applications, contents, and the like for controlling, and the mobile communication service subscriber can receive various services remotely without having to go directly to the store through the OTA technology.

As described above, when the mobile communication terminal 200 receives information related to the mobile communication service from the OTA server 300, the mobile communication terminal 200 stores the received information in the general-purpose subscriber information storage device 100 coupled to the mobile communication terminal 200. At this time, the OTA server 300 performs a control such as changing or deleting an EF file stored in the universal subscriber information storage device 100 remotely.

However, in order for the OTA server 300 to control the EF files stored in the universal subscriber information storage device 100, access authority information (Accession Condition, hereinafter 'access authority') that allows the OTA server 300 access to the EF files. Collectively) must be set. Conventionally, when the access right information for the EF files is set once when the universal subscriber information storage device 100 is ordered, it cannot be changed later, but in the embodiment of the present invention, the access right information for the EF files can be changed in real time. We suggest an access declaration file.

4 is a diagram illustrating the structure of an access declaration file according to an embodiment of the present invention.

As shown in FIG. 4, the access declaration file 400 employs a general EF file structure, and description of components overlapping with the conventional EF file structure will be omitted.

The access declaration file 400 includes access authority information 420 for the EF files. The access authority information 420 uses an APDU (Application Protocol Data Unit) parameter of an access domain to define access authority for EF files.

In this case, the access authority information 420 includes read, update, update, deactivate, and activate connection states. As the setting value for each connection state, key values (PIN1, ADM1, ADM3, NEVER, etc.) of APDU parameters are used.

At this time, the RFM (Remote File Management) application that performs OTA processing defines access rights for accessing EF files in access domain information. In addition, access is allowed to the access state of the EF file in which the same key value as the key value of the APDU parameter set in the access domain is defined.

That is, for example, if the 'ADM3' key value is set in the access domain information of the RFM application, access by the OTA technology is allowed to the EF file in which the 'ADM3' key value is set in the UPDATE connection state. Update commands can be performed. Here, the key value of the APDU parameter may be used for all access right information that can be defined as an embodiment of the 'ADM3' key value, but 'ADM3' is used to assign access right information that allows access by the OTA technology. This is the case when the key value of the APDU parameter is used.

In addition, the access declaration file 400 includes a file declaration item 440 in which EF files accessible by the OTA are defined.

The file declaration item 440 includes a length of EF path 442 and a path of EF to be managed by OTA 444 indicating the location where the EF file is stored.

Here, the length 442 of the path information is the length of the EF file path indicated in the 2nd to 11th octets, and has a value of '0x04' / '0x06' / '0x08' / 0x0A, for example.

In addition, the actual path information 444 contains the actual path of the EF file accessible by the OTA. The actual path to an EF file must always begin at MF (eg 3F00), each specified as a File Identifier Descriptor (FID). However, in case of Application Dedicated File-Universal Subscriber Identity Module (ADF-USIM) for USIM function, it is recorded as '7FFF'. At this time, if the length of the actual path information does not fill to the end, the remaining part is set to '0xFF'.

As described above, the file declaration item 440 may not only define EF files accessible by OTA, but may also be changed by OTA later, so that EF files accessible by OTA may be additionally defined. have.

5 is a block diagram showing an internal configuration of a general-purpose subscriber information storage device according to an embodiment of the present invention.

As shown in FIG. 5, the universal subscriber information storage device 100 includes a storage 120 and a controller 140.

The storage unit 120 stores subscriber information files for the mobile communication service, and access declaration files in which subscriber information files in which access rights are set so that the OTA server 300 can be accessed among the subscriber information files are defined (see FIG. 4). 400).

The controller 140 includes an RFM application that performs OTA processing, and when an access request for a specific subscriber information file is received from the OTA server 300, the specific subscriber information file requested for access is defined in the access declaration file 400. Check if it is And if defined in the access declaration file 400, access the specific subscriber information file requested to access.

If the specific subscriber information file for which access is requested is not defined in the access declaration file 400, the controller 140 may further define the specific subscriber information file for which access is requested in the access declaration file 400 to obtain access rights. Then approach.

6 is a flowchart illustrating a method of managing subscriber information through a wireless communication network at a remote location using an access declaration file according to an embodiment of the present invention.

As shown in FIG. 6, the universal subscriber information storage device stores the access declaration file (400 of FIG. 4) (S101). At this time, the access declaration file 400 is stored at the time of manufacture of the universal subscriber information storage device.

When the OTA server transmits an access request (S103) to the mobile communication terminal, the mobile communication terminal transmits the access request to the universal subscriber information storage device (S105).

The universal subscriber information storage device receives the OTA data for the access request (S107) and performs the update (S109). At this time, in order to update, the corresponding EF file should be accessed. If the access is allowed by the OTA server by checking the access domain information of the RFM application and the access declaration file 400 stored in step S101, the update is allowed. Can be performed successfully.

The universal subscriber information storage device determines whether the update is successful in step S109 (S111), and if it does not succeed, transmits an error response to the mobile communication terminal (S113). The mobile communication terminal transmits an error response to the OTA server (S115).

The OTA server transmits an access declaration file update request to the mobile communication terminal (S117), and the mobile communication terminal transmits an access declaration file update request to the general-purpose subscriber information storage device (S119).

The universal subscriber information storage device calls the access declaration file 400 (S121) and adds the EF file in which the error occurs to the access declaration file (S123). The access declaration file update response is transmitted to the mobile communication terminal (S125). The mobile communication terminal transmits an access declaration file update response to the OTA server (S127).

Thereafter, the OTA server retransmits the access request for the EF file in which the error occurred to the mobile communication terminal (S129). The mobile communication terminal transmits the access request to the universal subscriber information storage device (S131).

The universal subscriber information storage device receives the OTA data for the access request (S133) and performs the update again (S135). At this time, the access declaration file 400 is checked for updating. Since the access declaration file is updated in step S123, the update is successful.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a diagram illustrating a conventional element file structure.

Claims

A general-purpose subscriber information storage device for storing subscriber information files for a mobile communication service managed through a wireless communication network at a remote location,

A storage unit for storing an access declaration file in which subscriber information files in which access rights are set to be accessible through a wireless network from a remote location among the subscriber information files are defined; And

When a request for access to a specific subscriber information file is received, it is checked whether the specific subscriber information file is defined in the access declaration file, and if so, the specific subscriber information file is accessed. A control unit for accessing the specific subscriber information file after acquiring access authority by further defining a specific subscriber information file in the access declaration file.

Universal subscriber information storage device comprising a.

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The method of claim 1,

The access declaration file,

Implemented in the form of an Elementary File (EF),

Access rights information allowing change through the wireless communication network at the remote location, subscriber information file information accessible through the wireless communication network at the remote location, and path information indicating a location where the subscriber information file is stored;

And the subscriber information file information and the route information are changeable through a wireless communication network at the remote location.

In the general subscriber information storage device for storing subscriber information files for a mobile communication service managed through a wireless communication network at a remote location, the method for managing the subscriber information files,

(a) receiving a request for access to a specific subscriber information file through a wireless communication network at the remote location;

(b) whether the particular subscriber information file is defined in an access declaration file, wherein the access declaration file is defined among subscriber information files in which subscriber information files are defined that have access rights defined for access over a wireless network at a remote location; Confirming;

(c) accessing the specific subscriber information file if the specific subscriber information file is defined in the access declaration file;

(d) if the specific subscriber information file is not defined in the access declaration file, receiving a request for updating the access declaration file from the remote location and further defining the specific subscriber information file in the access declaration file; And

(e) accessing the specific subscriber information file defined in addition to the access declaration file to obtain access rights

Subscriber information file management method comprising a.

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The method of claim 4, wherein

Step (c) or step (e),

Checking whether the access request is a request defined in access authority information of the access declaration file;

If the access request is the defined request, checking the path information of the access requested subscriber information file in the access declaration file; And

Performing an operation according to the access request by accessing the access requested subscriber information file using the path information;

Subscriber information file management method comprising a.

The method according to claim 4 or 6,

The access declaration file,

Implemented in the form of an Elementary File (EF),

Access rights information allowing change over a wireless communication network at a remote location, subscriber information file information accessible through a wireless communication network at the remote location, and path information indicating a location where the subscriber information file is stored;

And said subscriber information file information and said route information are modifiable through said wireless communication network at said remote location.