TWI566571B - Method of performing sim/usim personalization on mobile devices - Google Patents

Description

User identification module/general user identification module personalization for mobile devices law

The invention relates to a method for personalizing a user identification module/general user identification module for a mobile device, in particular to a user identification module/general user identification module for a mobile device that does not affect the power-on efficiency of the locking device. The method of personalization.

A Subscriber Identity Module (SIM) card is a smart card used to store user identification data for mobile phone services. It can also be used to store SMS messages and phone numbers. In terms of external hardware, the SIM card is composed of a central processing unit (CPU), a read-only memory (ROM), a random access memory (RAM), and an electronically smeared It consists of components such as electrically erasable programmable read-only memory (EEPROM) and input/output (I/O) circuits. In terms of internal data, the SIM card adopts a hierarchical logical data structure, which includes three types: elementary file (EF), dedicated file (DF), and master file (MF). data of.

According to the specification TS 22.022, mobile equipment (ME) package developed by the 3rd Generation Partnership Project (3GPP) There are five types of personalization: network personalization, network subset personalization, service provider personalization, corporate personalization, and user identification. Group/Universal User Identification Module Personalization (SIM/USIM personalization). After the user inserts the SIM card into the mobile device, the user identity can be identified on the one hand during the boot process, and other information such as the operator network or the memory phone number can be identified on the other hand. The user actually uses the mobile device to issue commands to the SIM card, which should be executed or rejected according to standard specifications and their settings.

In the prior art SIM/USIM personalization method, the mobile device obtains the International Mobile Subscriber Identity (IMSI) of the specific SIM/USIM card as the comparison data. After each boot, the mobile device reads the contents of the basic file EF_IMSI in the SIM/USIM card currently installed, and then judges whether the data matches the memory. Only when the data matches, the mobile device can operate in the normal mode. In other words, when a specific mobile device is personalized by SIM/USIM, it can only be operated when a specific SIM/USIM card is installed. If you accidentally lose this mobile device, others will not be able to use other SIM/USIM cards for use, and certain SIM/USIM cards will also become invalid after loss reporting.

Figure 1 is a schematic diagram of the International Mobile Subscriber Identity Code Base File EF_IMSI defined for the SIM/USIM card in the 3GPP specification TS 51.011, where field 10 defines read (READ), update (UPDATE), revoke (INVALIDATE) and Reply (REHABILATATE) condition of the base file EF_IMSI. PIN (personal identification number) means that only the valid PIN can be provided to read and reply to the basic file EF_IMSI, while the ADM representative can only be updated with administrative rights. And abolish the base file EF_IMSI.

As shown in Figure 1, the reading of the International Mobile User ID basic file EF_IMSI is secured by a PIN. If the specific mobile device completes the SIM/USIM personalization and activates the SIM lock after the prior art method, the SIMI needs to be unlocked after each booting to obtain the IMSI of the currently installed SIM/USIM card for comparison. Therefore, prior art SIM/USIM personalization methods can affect boot efficiency when the mobile device is locked.

The present invention provides a SIM/USIM personalization method for a mobile device, comprising: acquiring an integrated circuit identification code of a specific smart card; storing the integrated circuit identification code of the specific smart card in a mobile device As a comparison data, the mobile device reads the content of an integrated circuit identification code basic file in one of the current smart cards after being turned on; and when determining that the integrated circuit identification code basic file conforms to the comparison When the data is available, the mobile device enters a normal mode.

210~300‧‧‧Steps

10‧‧‧ field

Figure 1 is a schematic diagram of the International Mobile Subscriber Identity Code Base File EF_IMSI as defined by the 3GPP specifications.

2 is a flow chart of a SIM/USIM personalization method for a mobile device according to the present invention.

Figure 3 is a schematic diagram of the integrated circuit identification code base file EF_ICCID defined in accordance with the 3GPP specifications.

The present invention provides a SIM/USIM personalization method for a mobile device, which does not affect the startup efficiency even if the mobile device is in the locked state. The SIM/USIM personalization method of the present invention can be applied to different kinds of mobile devices, including mobile phones, personal digital assistants (PDAs), handheld computers, tablet computers, and mini desktops (nettop). ) Computers, laptops, or other devices with communication capabilities. However, the type of mobile device does not limit the scope of the present invention.

In the mobile device to which the SIM/USIM personalization method of the present invention is applied, different types of smart cards can be installed therein, such as a SIM card of a global system for mobile communications (GSM) system, and a universal mobile communication system. (US), universal mobile telecommunications system (UMTS), removable user identity module (R-UIM) card and CDMA user identification module for USIM card, code division multiple access (CDMA) system Group (CSIM) card, etc. Although the present invention has been described with reference to a SIM/USIM card, the type of smart card installed in the mobile device does not limit the scope of the present invention.

In the mobile device to which the SIM/USIM personalization method of the present invention is applied, different sizes of smart cards can be installed therein, such as a standard SIM card (Mini SIM), a micro SIM card (Micro SIM) or a nano SIM card (Nano) SIM) and so on. However, the size of the smart card installed in the mobile device does not limit the scope of the present invention.

2 is a flow chart of a SIM/USIM personalization method for a mobile device according to the present invention, which includes the following steps:

Step 210: Obtain an integrated circuit card identity (ICCID) of a specific smart card, and perform step 220.

Step 220: Determine whether a pre-personalization check is passed; if yes, execute step 230; if no, perform step 300.

Step 230: Store the integrated circuit identification code of the specific smart card into the mobile device as the comparison data, and set the parameters of the related SIM/USIM personalization, and perform step 240.

Step 240: The mobile device starts the lock and performs step 250.

Step 250: The mobile device is rebooted, and step 260 is performed.

Step 260: The mobile device reads the content of an existing smart card integrated circuit identification code basic file (EF_ICCID) in the installation, and performs step 270.

Step 270: Determine whether the read integrated circuit identification code basic file EF_ICCID meets the comparison data; if yes, go to step 280; if no, go to step 270.

Step 280: The mobile device enters the normal mode.

Step 290: The mobile device enters the restricted mode.

Step 300: End SIM/USIM personalization.

Figure 3 is a schematic diagram of the integrated circuit identification code base file EF_ICCID defined for the SIM/USIM card in the 3GPP specification TS 51.011, where field 10 defines read (READ), update (UPDATE), close (DEACTIVATE) and The condition for starting (ACTIVATE) the base file EF_ICCID. ALW means that the basic file EF_ICCID can be read at any time, NEV means that the basic file EF_ICCID is prohibited from being updated, and ADM means that only the administrative authority can be used to close and start the basic file EF_ICCID. As is known to the general knowledge in the relevant field, ICCID is the unique identification of the SIM/USIM card. Therefore, the comparison data set in step 210 of the present invention is unique.

In step 220, the present invention determines whether or not to pass the pre-personalization confirmation. According to the 3GPP specification TS 22.022, pre-personalization confirmation is required before each data is changed during each type of personalization cycle to ensure that the following two conditions are met:

Condition 1: The specific type of personalization to be performed has not yet been initiated.

Condition 2: The personalization comparison data to be stored in relation to a particular type needs to be a subset of the existing personalization code.

For example, if the SIM/USIM personalization process has been completed before, and now you want to modify the content of SIM/USIM personalization, you must first perform de-personalization for SIM/USIM personalization. Condition 1 will Established. If the existing personalization code already contains the comparison data N1 previously stored for the network personalization, and in step 210, the comparison data SU1 related to the SIM/USIM personalization is obtained, and the existing personalized code needs to be (N1- The way of SU1) is updated, condition 2 will be established. If the existing personalization code is updated in the manner of (N2-SU1), Condition 2 will not hold. If one of Condition 1 and Condition 2 does not hold, the present invention performs step 300 to end SIM/USIM personalization.

If the pre-personalization is confirmed, the present invention stores the comparison data obtained in step 210 into the mobile device in step 230, and sets the parameters of the relevant SIM/USIM personalization. According to the 3GPP specification TS 22.022, the parameters for setting the relevant SIM/USIM personalization include the state of depositing a personalization control key (PCK) and setting a SIM/USIM personalization indicator (SIM/USIM personalization indicator). The personalization control key PCK can be a decimal string of 6~16 digits, which is usually randomly assigned by the operator. After the personalized control key PCK is stored in the mobile device, the SIM/USIM de-personalization is required to be input first. The correct personalization control key PCK. The SIM/USIM personalization indicator is used to indicate that the SIM/USIM personalization is in an ON/OFF state, and the present invention sets the SIM/USIM personalization indicator to an "ON" state in step 230, representing SIM/USIM personalization has been initiated. Therefore, the mobile device needs to perform the corresponding confirmation step at the time of power-on, which will be explained later.

Since the mobile device activates the lock in step 240, after rebooting in step 250, it will be required according to the results of steps 260 and 270, whether in normal mode in step 280 or in restricted mode in step 290. Just enter the correct PIN to unlock. The SIM locker and the unlocking method are well known to those skilled in the relevant art, and are not described herein, and the SIM locker and the unlocking method are not limited to the scope of the present invention.

In step 260, the mobile device reads the contents of the existing smart card integrated circuit identification code basic file EF_ICCID in the installation, and determines in step 270 whether the read integrated circuit identification code basic file EF_ICCID meets the saving in step 230. Comparison data. If the data is consistent, the existing smart card currently installed is the smart card used in the previous SIM/USIM personalization. At this time, step 280 is executed to enter the normal mode, and the user can use all the functions requested through the mobile device. If the data does not match, the existing smart card currently installed is not the smart card used in the previous SIM/USIM personalization. At this time, step 290 is executed to enter the restricted mode. The restricted mode can be the "emergency calls only mode" defined in the 3GPP specification TS 22.022, and the mobile device uses the temporary location user register (VLR) assigned temporary mobile subscriber identity (temporary mobile Subscriber identity, TMSI) to send out emergency calls.

The present invention uses the ICCID of a specific smart card as a SIM/USIM individual The comparison data, in which the ICCID is unique, and the reading of the integrated circuit identification code basic file EF_ICCID is not protected by the PIN. In the present invention, even in the locked state, the mobile device can directly read the content of the integrated circuit card identification code basic file EF_ICCID in the existing smart card after installation, and then determine whether the existing smart card in the installation is a specific wisdom. Card without having to wait until the unlock is complete. Therefore, the SIM/USIM personalization method of the present invention does not affect the startup efficiency.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

210~300‧‧‧Steps

Claims (7)

A method for performing a subscriber identity module/universal subscriber identity module personalization (SIM/USIM personalization) on a mobile device, comprising: acquiring an integrated circuit of a specific smart card An integrated circuit card identity (ICCID); storing the integrated circuit identification code of the specific smart card into a mobile device as a comparison data; after the mobile device is turned on, Reading the content of an integrated circuit identification code basic file (EF_ICCID) in one of the current smart cards; and when determining that the integrated circuit identification code basic file conforms to the comparison data, the mobile device leaves the locked state To enter a normal mode. The method of claim 1, further comprising: when determining that the integrated circuit identification code basic file does not conform to the comparison data, the mobile device enters a restricted mode. The method of claim 2, wherein the mobile device is capable of performing more operations in the normal mode than in the restricted mode. The method of claim 1, further comprising: determining whether to pass a pre-personalization check; and storing the integrated circuit identification code in the mobile device when determining the pre-personalization confirmation As the comparison data. The method of claim 4, wherein the pre-personalization confirmation comprises: confirming that the SIM/USIM personalization has not been activated; and confirming that the integrated circuit identification code of the specific smart card is a child of an existing personalization code set. The method of claim 1, further comprising: depositing a personalization control key into the mobile device. The method of claim 1, further comprising: setting a SIM/USIM personalization indicator to a startup state.