KR20070076695A - Method for displaying roaming service charge in mobile communication terminal - Google Patents

Abstract

A method for displaying information about roaming service rates in a mobile communication terminal is provided to display rate information for a roaming service on a displayer of the mobile terminal when a user of the mobile terminal gets out of a service area of a mobile service provider, to which the user subscribes, and receives a roaming service provided by another mobile service provider. A microprocessor of a mobile terminal reads information about a preferred roaming list(PRL) stored in a memory(S32). A mobile communication system, which provides a communication channel by using information about the PRL and values of a number assignment module(NAM), is searched(S33). It is determined whether a system identifier(SID) of the mobile communication system is identical to a HOME_SID_IND among the values of the NAM if the mobile communication system matching with information included in the PRL exits(S35). If the SID is identical to the HOME_ SID_ IND, the microprocessor displays a table relative to a roaming service stored in the memory, on a displayer, or a voice corresponding to the table is output through a voice processor(S37,S38).

Description

How to display roaming service charge information in mobile terminal {METHOD FOR DISPLAYING ROAMING SERVICE CHARGE IN MOBILE COMMUNICATION TERMINAL}

1 is a view showing a display unit when providing a roaming service in a conventional mobile communication terminal.

2 is a schematic block diagram of a mobile communication terminal according to the present invention;

3 is a diagram illustrating a PRL structure stored in a memory unit in a mobile communication terminal according to the present invention.

4 is a flowchart illustrating a roaming service charge information display procedure in a mobile communication terminal according to the present invention.

<Explanation of symbols for the main parts of the drawings>

20: MSM 30: memory section

40: key input unit 50: display unit

60: wireless unit 70: voice processing unit

31: signal acquisition recording area 32: system recording area

The present invention relates to a mobile communication terminal capable of roaming service, and in particular, when a user of a mobile communication terminal uses a roaming service, a roaming service fee in a mobile communication terminal suitable for displaying the charge information of the roaming service on a display unit of the mobile communication terminal. The information display method.

In general, when a user makes a call using a mobile communication terminal or uses an additional service, the user must subscribe to a specific mobile communication service provider.

In this situation, users of all mobile terminals want to be able to use their mobile terminals in any region or any country. On the other hand, a mobile service provider has a wider telecommunications service area, such as a base station and a switching center. The installation cost of the communication equipment and its maintenance costs will be burdensome because many installations are required.

To compensate for these shortcomings, different service providers make a contract, and if each subscriber leaves their service area or country, they can receive the network service provided by another mobile service provider. Make telecommunications services available in any region or country.

Such a mobile communication service is called a roaming service. At present, CDMA communication method '011' and '017' are contracted to provide roaming service to each other, and PCS (personal communication service) communication method is '016', '018', and '019' to roam each other. It is contracted to provide.

In addition, roaming service is possible between a country providing GSM communication method and a country providing CDMA communication method.

However, when the user of the mobile communication terminal receives a roaming service provided by another mobile communication service provider out of the mobile communication service area of the mobile communication service provider to which the mobile communication terminal subscribes, the display unit of the mobile communication terminal roams as shown in FIG. 1. An icon or an indicator (hereinafter referred to as an icon) is displayed.

However, the user of the mobile communication terminal does not know which mobile service provider provides the roaming service and how much the roaming service fee is, so hesitant to roam the service or have doubts about the roaming service charge system. There was no choice but to use.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional technology described above, and an object of the present invention is to provide a roaming service provided by another mobile communication service provider beyond a mobile communication service area of a mobile communication service provider that a mobile communication terminal user subscribes to. When receiving, it is to provide a method for displaying roaming service fee information in a mobile communication terminal capable of displaying roaming service fee information on a display unit of a mobile communication terminal.

In order to achieve the above object, a method for displaying roaming service fee information in a mobile communication terminal according to the present invention includes the steps of: pressing a power button by a user of the mobile communication terminal; Reading Preferred Roaming List (PRL) information stored in a memory in a microprocessor of the mobile communication terminal; Finding a mobile communication system providing a call channel using PRL information and number allocation module (NAM) values read from the microprocessor; Determining, by the microprocessor, whether there is a mobile communication system that matches information included in the PRL information stored in the memory; As a result of the determination, when there is a mobile communication system that matches the information included in the PRL information, it is determined whether the system identifier (SID) of the currently found mobile communication system is equal to the value in HOME_SID_IND among the number allocation module (NAM) values. Making a step; As a result of the determination, when the system identifier (SID) of the currently found mobile communication system is equal to the value in the HOME_SID_IND of the number allocation module (NAM) value, the microprocessor displays the roaming service charge table stored in the memory of the mobile communication terminal. Displaying on the display unit, or outputs a voice message corresponding to the rate list through the voice processing unit of the mobile communication terminal.

According to a feature of the present invention described above, when a user of a mobile communication terminal receives a roaming service provided by another mobile communication service provider out of the mobile communication service area of the mobile communication service provider that he subscribes to, the display unit of the mobile communication terminal roams. It provides the advantage of displaying service charge information. Therefore, the user of the mobile communication terminal can quickly determine whether or not to use the roaming service, and even when using the roaming service, the roaming service fee system can be known and used.

Hereinafter, a procedure for displaying roaming service fee information in a mobile communication terminal according to the present invention will be described with reference to the accompanying drawings.

2 is a schematic block diagram of a mobile communication terminal according to the present invention. Referring to FIG. 2, a mobile station modem (MSM) 20 performs an overall control operation of a mobile communication terminal.

The radio unit 60 controls transmission and reception of voice data and control data under the control of the MSM 20.

The voice processing unit 70 converts the voice data received from the wireless unit 60 into an audible sound through the speaker under the control of the MSM 20, and outputs the voice signal received from the microphone to the wireless unit 60. do.

The key input unit 40 includes a plurality of numeric keys and function keys, and outputs key input data corresponding to a key pressed by the user to the MSM 20. The display unit 50 displays various messages and the like under the control of the MSM 20.

As shown in FIG. 3, the PRL information divided into the signal capture recording area 31 and the system recording area 32 is stored. Here, the signal capture recording area 31 includes signal acquisition type information and channel information, and the system recording area 32 includes system type information, priority information, index information, roaming indicator information, and system identification. (SID) information and NID information.

In this case, it is assumed that a roaming indicator based on a system identification (SID) of each mobile communication provider is set in the PRL information. For example, when SKT and KT's mobile communication providers are currently providing roaming services, roaming indicators can be determined by negotiating roaming indicators for each SID as shown in Table 1 below.

SID Roaming indicator Mobile operators 2220,2221,2222,2226,2236,2238 4 SKT 2189,2180,2185,2210,2211,2212,2215 5 KT . . .

In addition, the memory 30 of the mobile communication terminal is created and stored as shown in Table 2 below, a roving service fee table that maps each other and the roaming service fee of the mobile communication provider corresponding to the roaming indicator representing the SID of each mobile communication provider. .

Roaming indicator Mobile operators Roaming Service Fee / 10secs (U $) 4 SKT 0.20 5 KT 0.18 . . .

Hereinafter, a procedure for displaying roaming service fee information in a mobile communication terminal according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a flowchart illustrating a procedure for displaying roaming service fee information in a mobile communication terminal according to the present invention.

4 and 3, the user of the mobile communication terminal presses the power button of the key input unit 40 of the mobile communication terminal (S31).

At this time, the MSM 20, which is a microprocessor of the mobile communication terminal, reads PRL information stored in advance in the memory unit 30 (S32).

The system recording area 32 of this PRL information includes system type information, priority information, index information, roaming indicator information, system identifier (SID) information, and NID information.

In this case, a roaming indicator according to a system identification (SID) of each mobile communication provider is preset in the PRL information as shown in Table 1.

In addition, in the memory 30 of the mobile communication terminal, a roving service fee table that maps each other's service name and roaming service fee corresponding to a roaming indicator representing the SID of each mobile communication provider is also created and stored as shown in Table 2.

Subsequently, the MSM 20 of the mobile communication terminal searches for a mobile communication system that provides a communication channel using the read PRL information and the Number Assignment Module (NAM) values (S33).

At this time, the MSM 20 of the mobile communication terminal determines whether there is a mobile communication system that matches the information included in the signal acquisition recording area 31 and the system recording area 32 of the PRL (S34).

If it is determined in step S34 that there is a mobile communication system that matches the information included in the PRL 30, it is compared whether the SID of the currently found mobile communication system is equal to the value in the HOME_SID_NID of the NAM parameters (S35). .

As a result of the comparison in step S35, if the SID of the currently found mobile communication system is equal to the value in HOME_SID_NID among the NAM parameters, it is determined as a home mobile communication system to which the user subscribes (S36). In this case, since the display unit 50 of the user's mobile communication terminal is a normal case, text information related to the roaming service is not provided.

On the other hand, when the comparison result of step S35, if the SID of the currently found mobile communication system is not the same as the value in the HOME_SID_NID of the NAM parameters, it is determined as a mobile communication system to receive a roaming service (S37). That is, when the roaming indicator of the currently found mobile communication system has a value of 3 or more on the PRL, the MSM 20 of the mobile communication terminal determines that it is a roaming service system, and determines the roaming service fee table of the mobile communication system that provides the selected roaming service. The data is read from the memory 30 and displayed on the display unit 50 (S38). In addition, the MSM 20 of the mobile communication terminal may store the voice memo corresponding to the roaming service fee table of the mobile communication system providing the selected roaming service in advance and provide the same to the user.

For example, the SID of the currently found mobile communication system is 2222, the HOME_SID_NID is 2189 / 65535,2180 / 65535,2185 / 65535,2210 / 65535,2211 / 65535,2212 / 65535,2215 / 65535, and the system record on the PRL is In the area 32, the SID 2222, the NID 65535, and the roaming indicator 3 are recorded, and the roaming service charge table stored in the memory 30 includes the roaming indicator 3, the mobile communication provider (SKT), and the roaming. If the service fee (U $ 0.20) is recorded, when the user of the mobile communication terminal powers on, the mobile communication system for jurisdiction of the area is a roaming service system, and the roaming icon indicating the roaming service on the display unit 50 of the mobile communication terminal. In the current mobile communication system, the roaming indicator matching the SID 2222 is 3, and according to the roaming service charge table shown in Table 2, the "SKT usage rate is U $ 0.20 per 10 seconds" is displayed.

As described above, according to the method for displaying roaming service charge information in a mobile communication terminal according to the present invention, roaming provided by another mobile communication service provider out of the mobile communication service area of a mobile communication service provider that the mobile communication terminal user subscribes to When the service is provided, the roaming service charge information may be displayed on the display unit of the mobile communication terminal.

Therefore, the user of the mobile communication terminal can quickly determine whether or not to use the roaming service, and even when using the roaming service, the roaming service fee system can be known and used, thereby greatly improving the quality of the overall mobile communication service.

On the other hand, the present invention is not limited only to the above-described embodiments, but may be modified and modified within the scope not departing from the gist of the present invention, such modifications and changes should be regarded as belonging to the following claims. will be.

The scope of the claims should be seen in all cases of using a System ID (SID) and a Roaming Indicator in claiming and displaying roaming charges and roaming usage information in a mobile communication system.

Claims (2)

Pressing a power button by a user of the mobile communication terminal; Reading Preferred Roaming List (PRL) information stored in a memory in a microprocessor of the mobile communication terminal; Finding a mobile communication system providing a call channel using PRL information and number allocation module (NAM) values read from the microprocessor; Determining, by the microprocessor, whether there is a mobile communication system that matches information included in the PRL information stored in the memory; As a result of the determination, when there is a mobile communication system that matches the information included in the PRL information, it is determined whether the system identifier (SID) of the currently found mobile communication system is equal to the value in HOME_SID_IND among the number allocation module (NAM) values. Making a step; As a result of the determination, when the system identifier (SID) of the currently found mobile communication system is equal to the value in the HOME_SID_IND of the number allocation module (NAM) value, the microprocessor displays the roaming service charge table stored in the memory of the mobile communication terminal. Roaming service charge information display method of the mobile communication terminal characterized in that it is displayed on the display unit, or outputting a voice message corresponding to the rate table through the voice processing unit of the mobile communication terminal. The method of claim 1, The roaming service in the mobile communication terminal is stored in the memory of the mobile communication terminal, a roaming service rate table that maps the roaming service charges with each other of the mobile communication providers corresponding to the roaming indicators representing the SID of each mobile communication provider. How to display fee information.

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