KR100744294B1 - Method of changing password for management in mobile wireless telephone - Google Patents

Abstract

The present invention provides a method of remotely changing and storing a maintenance password of a mobile radio telephone using a short message service (SMS). A method for changing a password for management of a mobile radiotelephone, comprising the steps of: receiving a scrambled password data frame from a base station; separating and extracting setting data and password data from the received password data frame; And descrambling the password data using setting data to restore, store, and change the password data.

NAM, password

Description

How to change password for management of mobile cordless phone {METHOD OF CHANGING PASSWORD FOR MANAGEMENT IN MOBILE WIRELESS TELEPHONE}             

1 is a diagram showing an example of a block configuration of a mobile wireless telephone to which the present invention is applied;

2 illustrates a data format for transmitting a program password for a nonvolatile memory in a mobile radio telephone according to an embodiment of the present invention;

3 is a control flowchart illustrating a method for transmitting password change data to an SMS in an eNB according to an embodiment of the present invention.

4 is a control flowchart illustrating a method of changing a management password of a mobile wireless telephone according to an embodiment of the present invention.

The present invention relates to a mobile radio telephone, and more particularly, to a method for remotely changing a management password of a mobile radio telephone.                         

The mobile radiotelephone stores enough information to identify the user and the system to which it is connected, and this information must be passed on to the base station's system in order to make a call set up of the mobile radiotelephone. Such information is referred to as NAM (Number Assignment Module) information. This NAM information includes a Mobile Identification Number and data representing the selected service provider. The NAM information is also stored in the nonvolatile memory. All mobile cordless phones must use NAM information to access the selected radiotelephone system. A user who purchases a mobile cordless telephone expects that all information for use is entered into the storage of the mobile cordless telephone. Therefore, it is necessary to enter the NAM information at the A / S center or the mobile radio distributor. This is done by A / S personnel, etc., programming the NAM-related information directly into the mobile wireless phone. In order to program this NAM information to the mobile wireless telephone, a NAM password is required. In addition, a test mode password is required to set the mobile radio telephone to the test mode. That is, the management password of the mobile radiotelephone includes a test mode password or a number assignment module (NAM) password, and the like is used by a service center or an agent handling a mobile radiotelephone.

However, in the case of a service center or an agency of a mobile radio telephone, service personnel may be replaced due to a change of work or retirement of the agents in charge of service. Accordingly, leakage of a test password or a NAM password, which is a management password, may occur, thereby causing damage to subscribers of the mobile radio telephone.

Meanwhile, with the rapid development of mobile wireless telephone technology and the increase of mobile subscribers, mobile communication service providers are providing various additional services to meet the needs of mobile subscribers and attract more subscribers. Such an additional service is a short message service (SMS). Short message service is a service that allows the communication terminal to send and receive a sentence of a predetermined capacity. Short message service has the same function as two-way wireless calling, which enables simple text reception, voice mail notification, text transmission, etc., to meet the needs of customers. In addition, SMS can be developed a variety of application services due to the unique data transmission function and guaranteed transmission.

Accordingly, it is an object of the present invention to provide a method for changing a password for management of a mobile radio telephone, which enables the management password of the mobile radio telephone to be changed when necessary from a remote location by using the SMS function used in the mobile radio telephone.

In addition, another object of the present invention is to manage the mobile wireless telephone that can prevent the damage of the mobile wireless telephone subscribers due to the leakage of the management password by changing the password for the NAM program and the test mode switching using the SMS communication network It provides a password change method.

In accordance with another aspect of the present invention, there is provided a method for changing a password for management of a mobile radio telephone, the method comprising: receiving a scrambled password data frame from a base station, and extracting setting data and password data separately from the received password data frame. And descrambling the password data using the setting data to restore, store, and change the password data.
In another aspect, the present invention provides a method for changing a password for management of a mobile radio telephone, the method comprising: extracting tongue data and password data from the password data frame when a password data frame is received from a base station; Descrambling the password data using the setting data; After descrambling the password data, searching for a password type in the password data frame; If the password type is a program password, changing the program password and storing the password data; If the password type is a test mode switching password, the password data is characterized in that the process consisting of changing and storing the test mode switching password.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, specific details such as a key input and an operation process thereof are shown, which are provided to help a more general understanding of the present invention, and the specific matters may be modified or changed within the scope of the present invention. Will be apparent to those of ordinary skill in the art.

1 shows an example of a block configuration of a mobile radio telephone to which the present invention is applied. Referring to FIG. 1, in the mobile wireless telephone to which the present invention is applied, the controller 110 controls the overall operation of the mobile wireless telephone. The memory 140 includes a ROM that stores an operating program, an electrically programmable EEPROM, and a RAM. The memory 140 stores an operation program for short message processing of the mobile radio telephone according to the embodiment of the present invention. In addition, a short message is stored in the Y. pyrom of the memory 140.                     

The display unit 120 may be a display device such as a liquid crystal display (LCD). In addition, the display unit 120 displays the state of the mobile wireless telephone or the progress of the program under the control of the controller 110. The key input unit 130 includes a plurality of numeric keys and function keys for performing various functions, and outputs key input data to the controller 110 according to an external key operation.

The RF unit 160 up-converts the signal input from the analog baseband unit 170 under the control of the controller 110 and wirelessly outputs the signal to the base station (not shown) via the antenna 190. . In addition, the RF unit 160 down-converts the received signal received through the antenna 190 under the control of the controller 110 and outputs it to the analog baseband unit 170. The analog baseband unit 170 converts the signal input from the RF unit 160 into a baseband and a digital signal and outputs the signal to the controller 110. In addition, the analog baseband unit 170 outputs a signal output from the control unit 110 to the RF unit 160. The controller 110 performs channel demodulating and channel decoding operations on the digital signal output from the analog baseband unit 170. The control unit 110 displays the image data on the display unit 120. The controller 110 outputs the corresponding voice data to the voice signal processor 180. The voice signal processor 180 performs compression / decompression operation of the voice data, converts the voice data into an audible voice signal, and outputs the same to the user through a speaker SPK.

In addition, the voice signal processor 180 converts and compresses a voice signal of the user output from the microphone MIC to voice data and outputs the voice signal to the controller 110. The controller 110 performs an operation such as channel coding and channel modulation on the voice data, and passes through the analog baseband unit 170, the RF unit 160, and the antenna 190. Wireless output to the base station. In addition, the controller 110 performs a user interface function. That is, the controller 110 displays various menus for the user's convenience on the display unit 120 so that the user can select the corresponding menu.

According to the present invention, the mobile radiotelephone configured as described above can easily change the password for managing the mobile radiotelephone, that is, the password for the NAM program and the password for switching the test mode using the SMS function. In other words, when receiving the password change data from the base station, the mobile phone separates the password to be changed from the received data and its type, and changes and stores the existing password.

2 illustrates a data format for transmitting a program password of a nonvolatile memory in a mobile radio telephone according to an embodiment of the present invention.

The password SMS 10 includes data 12 indicating the password type. The password type data 12 is an index indicating whether the password is a password for a NAM program or a test mode switch. The SMS 10 for password also includes a LEN 14, setting data 16 and password data 18. LEN 14 represents the total size of data except for the password type. Salting data 16 is data having a key value that is scrambled so that the password cannot be recognized. The password data 18 is password data in which the original password is scrambled with setting data. This password data is restored to the original password data using the setting data 16.

3 is a control flowchart illustrating a method for transmitting password change data as an SMS in a base station according to an embodiment of the present invention. Hereinafter, a method of transmitting, by the base station, password change data as an SMS will be described with reference to FIGS. First, the base station receives a password to be changed and its type (step 202). In step 204, the base station generates the setting data 16 using a random number. As described above, the setting data 16 is data having a key value scrambled so that the password cannot be recognized. The setting data 16 is used to process the password not to be recognized. Accordingly, in step 206, the base station scrambles the original password using this setting data. In step 208, the base station adds the password type and setting data to the scrambled password data frame and formats the password change data. This data format includes data 12 representing a password type, data 14 representing a data length, setting data 16 and password data 18 as shown in FIG. The base station then transmits the password change data to the mobile radio telephone over the forward channel.

As described above, the present invention scrambles the management password to be changed in the mobile wireless telephone in the base station using the setting data in the base station.

4 is a control flowchart illustrating a method of changing a management password of a mobile wireless telephone according to an embodiment of the present invention.

Referring to FIG. 4, first, the control unit 110 of the mobile radio telephone receives data for password change in step 302, and separates setting data and password data from the received data. The sender processes and transmits the original password data so that the original password data cannot be recognized by using the setting data. That is, the password data separated from the received data is scrambled using the setting data. In step 304, the controller 110 of the mobile wireless telephone descrambles and restores the password data scrambled by the received setting data.

The control unit 110 of the mobile radio telephone detects the type of password to be changed in step 306. This password type is represented by password type data 12 in the data format shown in FIG. The password includes a password for the NAM program and a password for the test mode switch. As mentioned above, the NAM information is used because it should not be easily changed as information necessary to identify the user of the mobile radio telephone and its connected system. In addition, since the switching of the mobile radio telephone to the test mode should only be possible by a specific person such as an A / S agent, a test mode switching password is used. In step 306, the password type is determined by determining whether the password type is a password for a NAM program. If the password type is NAM program password, the control unit 110 of the mobile radio telephone proceeds to step 308 to change the NAM program password. If it is determined in step 306 that the password type is not a password for the NAM program, the flow proceeds to step 310 to change the test mode switching password.

As described above, the password change method of the present invention separates the setting data and the scrambled password data from the SMS message (Short Message Service) transmitted from the base station, and descrambles the scrambled data by the setting data to decode the password data. Restore it. And changing and storing the program password stored in the nonvolatile memory in the telephone as the restored password data. Accordingly, the password for the program stored in the nonvolatile memory in the mobile wireless telephone can be freely changed remotely using the SMS function of the mobile wireless telephone.

As described above, according to the present invention, the management password of the mobile wireless telephone can be easily changed by using the SMS function, thereby preventing damage to the mobile wireless telephone subscriber due to the leakage of the management password. In addition, it is possible to protect personal information of the mobile radio telephone subscriber.

Claims (11)

In password change method for management of mobile cordless telephone, Receiving a scrambled password data frame from a base station; Separating and extracting setting data and password data from the received password data frame; And restoring, storing, and changing the password data by descrambling the password data by using the setting data. The method of claim 1, Receiving a password data and a password type at the base station; Generating setting data using a random number in response to the input password data and password type; Scrambling the password data using the setting data; And generating a password data frame consisting of the password type, the setting data and the scrambled password data, and transmitting the generated password data frame to the mobile radio telephone. The method of claim 2, And the password data frame includes total length information of the password data frame excluding the length of the password type. The method of claim 2, And said setting data is a key value for scrambling and descrambling said password data. delete The method of claim 1, wherein storing and changing the password data comprises: After extracting the password data, searching for a password type in the password data frame; If the password type is a program password, storing the password by changing a program password; And if the password type is a password for a test mode switch, changing the password for changing the test mode switch and storing the password. The method of claim 1, And said password data frame is received via a short message service (SMS). In password change method for management of mobile cordless telephone, When the password data frame is received from the base station, extracting set data and password data from the password data frame; Descrambling the password data using the setting data; After descrambling the password data, searching for a password type in the password data frame; If the password type is a program password, changing the program password and storing the password data; And if the password type is a test mode switching password, changing the password data for changing the test mode and storing the password data. The method of claim 8, Receiving a password data and a password type at the base station; Generating setting data, which is a key value for scrambling and descrambling the password data, in response to the input password data and password type, using a random number; Scrambling the password data using the setting data; And generating a password data frame consisting of the password type, the setting data and the scrambled password data, and transmitting the generated password data frame to the mobile radio telephone. The method of claim 9, And a total length information of the password data frame except the length of the password type in the password data frame. The method of claim 8, And said password data frame is received via a short message service (SMS).

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