KR19990031841A - Numeric Assignment Module Designation Method for International Roaming in Code Division Multiple Access / Analog Dual Mode Terminal - Google Patents

Abstract

The present invention relates to a method for facilitating Number Assignment Module (NAM) programming required for international roaming of a CDMA / Analog dual mode terminal.

The present invention first divides the NAM into several types according to the parameters common to each region and communication method, and the common parameters are inputted and stored in advance by the terminal manufacturer, and when the user uses the terminal, the NAM is designated by a predetermined key. When you enter the mode and select a specific NAM, you can enter the rest of the detailed changes without changing the previously entered parameters.

Therefore, according to the method of the present invention, the number of parameters for distinguishing and inputting NAM programming according to the situation using Micom, Display, Memory, Key, etc. which are essential components of the existing terminal. You can effectively use NAM by reducing

Description

Numeric Assignment Module Designation Method for International Roaming in Code Division Multiple Access / Analog Dual Mode Terminal

The present invention relates to a method for facilitating Number Assignment Module (NAM) programming required for international roaming of a CDMA / Analog dual mode terminal.

As shown in FIG. 1, the conventional mobile communication terminal is provided with an RF / analog processing unit 1, a digital signal processing unit 2, a microcomputer 3, a display unit 4, a key input unit 5, and a memory 6. The microcomputer 3 is used for overall control of the terminal. That is, in the case of reception, the RF / analog signal input through the antenna is converted into a digital signal by the RF / analog processing unit 1, and is converted into a voice signal by the digital signal processing unit 2, and in the case of transmission, the voice is input as a microphone. After the signal is modulated by the digital signal processor 2 into a digital signal, the RF / analog processor 1 is loaded on a carrier and transmitted. It serves as a central processing unit for the processing unit 2, the display unit 4, and the key input unit 5.

On the other hand, mobile phones are generally limited to only one country, but should be able to be used in many countries depending on the tendency of physical and human exchange. However, different countries have different mobile phone services, different country numbers and different system-related values. Therefore, in order to use mobile phones in other countries, these parameters must be entered into the terminal each time. There is inconvenience. In order to efficiently perform international roaming, the CDMA / Analog dual mode terminal is provided with a NAM in a part of the memory 6 to store some frequently used parameters and to operate the microcomputer 3 based on the parameters. have.

By the way, the NAM provided in the conventional terminal is composed of several NAMs such as NAM1, NAM2, NAM3, NAM4, etc., so that the user can change and select various NAMs according to the situation. They are all in the same format in duplex mode. Therefore, when using each NAM, it was inconvenient for the user to input all the terminal and system related parameters, so the practical use of this function was limited.

Therefore, in the present invention, the number of parameters input by the user by separating the NAM designation according to the situation by using Micom, Display, Memory, Key, etc. which are essential components of the existing terminal. We want to provide a way to effectively use NAM by reducing it.

1 is a block diagram of a conventional mobile communication terminal

2 is a flow chart illustrating an implementation of NAM programming in an existing mobile communication terminal.

<Description of Symbols for Main Parts of Drawings>

1: RF / Analog Processing Unit

2: Digital signal processor

3: Micom

4: Display

5: Key input unit

6: Memory

In order to achieve the above object, the present invention is implemented using only the components of the existing terminal, a microcomputer, a display, a memory, and a key.

On the other hand, in the case of a new NAM designation, the NAM is divided into several regions by region and communication method. In other words, if there are a lot of common parameters that the user must input, set this as an independent NAM, and input the common parameter in advance from the terminal manufacturer.If the user selects the NAM, the parameter that is already input is left as it is. It is easy to use it by inputting only detailed changes.

Hereinafter, the operation of the present invention will be described with reference to the flow chart of FIG. 2 as an example of dividing into a Korea-only NAM, an international-only NAM, and other related NAMs by region and communication method.

First, enter the NAM programming by using a predetermined selection key to select one of Korean NAM, single mode NAM, dual mode NAM, and other NAMs.

In case of selecting the exclusive NAM in Korea, unnecessary user's input is saved by storing the information of the service company that subscribes, that is, the frequency channel value, the system parameter (SID), the network parameter (NID), and the frequency band in a predetermined value. Reduce

Among international NAMs, single-mode NAMs are selected in regions where analog or digital modes cannot coexist and can be serviced. If analog is selected from the single mode NAM, the control channel values of the A band and the B band are stored according to the international standard, and the frequency band of the used region is selected from A Only, B Only, A then B, and B then A. If digital is selected among single-mode NAMs, digital primary and secondary channels are in accordance with international standards, i.e. for CDMA, 283 primary channels for A band, 691 for secondary channels, 384 for primary channels for B band, and 384 for secondary channels. Save as 777. After inputting SID and NID value and saving, select and save frequency band.

Among the international NAMs, the dual mode NAM is selected from the area where the analog and digital modes can coexist and be serviced. When this is selected, the analog and digital frequency channel related parameters are stored according to international standards. Which of the duplex modes should be prioritized, i.e., whether it is Digital Preferred or Analog Preferred? It also inputs and stores SIDs and NIDs, and selects frequency bands.

The other NAM allows the user to input and store all parameters for other cases that deviate from the predetermined settings. If this is selected, all digital or analog channel values, mode priorities, and SID / NID values are entered and stored. The next frequency band will be selected.

If the parameters of each of the NAMs are stored, it is asked whether to additionally specify the parameters. If an additional designation is selected, enter and store a Mobile Identification Number (MIN), and if no additional designation is selected, just exit NAM designation mode.

Therefore, according to the method of the present invention, the number of parameters for distinguishing and inputting NAM programming according to the situation using Micom, Display, Memory, Key, etc. which are essential components of the existing terminal. You can effectively use NAM by reducing

Claims (1)

In designating NAM for international roaming of CDMA / Analog dual mode terminal, NAM is classified by common parameter according to region or communication method, and common parameter is inputted and stored by terminal manufacturer in advance and when user uses terminal. NAM for NAM for international roaming in a CDMA / Analog dual mode terminal, characterized in that when a specific NAM is selected by entering a NAM designation mode by using a predetermined selection key, the input parameters are left as it is and only the remaining detailed changes are input. Specify method