KR20010091482A - Method For Evaluating Duration Of Call Of Mobile Communication System - Google Patents

Abstract

PURPOSE: A method for calculating call time of a mobile communication system is provided to impose the normal call charge in even case of sudden call drop by accumulatively counting call time of a mobile terminal periodically. CONSTITUTION: A mobile terminal enters a call standby state(S10). A base station controller determines whether the corresponding mobile terminal tried call connection requesting a voice call to the other party terminal(S11). If determining that the corresponding mobile terminal tried such call connection, the base station controller transmits information of a telephone number to an exchanger for calling the other party terminal(S12). The exchanger determines whether the call connection between the mobile terminal and the other party terminal is carried out(S13). In case that the other party terminal does not response to the call connection trial, it is determined whether the mobile terminal performs call cancel operation(S14). If the mobile terminal performs call cancel operation, a call time counter performs accumulative counting periodically for renewing and storing the counted value as whole call time(S15). The exchanger determines whether the mobile terminal performs call termination normally or any call drop is generated by an abnormal method(S16). The call time counter calculates the call charge related to the corresponding mobile terminal based on the whole call time counted finally(S17).

Description

Method for Evaluating Call Duration of Mobile Communication System {Method For Evaluating Duration Of Call Of Mobile Communication System}

The present invention relates to a mobile communication system, and more particularly, to a method for calculating a talk time of a mobile communication system for accurately calculating a talk time according to a voice call of a mobile terminal.

As is well known, in a mobile communication system, a user can perform a voice call with the other party by wire or wireless while moving a location in connection with a public telephone network (PSTN). Mobile terminals have been adopted, which are easy to carry and have excellent transmission / reception sensitivity of RF signals.

In addition, in order for the mobile terminal to move normally from one area to another, and to perform a normal voice call, a base station for transmitting and receiving signals must be established in each area, and the base station for each such area must be established. Under the control of the base station controller connected to the exchange.

On the other hand, in such a mobile communication system, a predetermined mobile terminal can calculate a talk time for a voice call with a predetermined wired or wireless subscriber and add a call charge based on the calculated talk time.

At this time, in the mobile communication system, the call time calculation for the voice call to the mobile terminal includes information indicating that the call is normally terminated after the mobile terminal makes a voice call by a call connection with a predetermined counterpart terminal. Only after receiving from the mobile terminal will the call charge be calculated by calculating the talk time used.

However, in such a mobile communication system, since a predetermined mobile terminal performs a voice call and then terminates the call normally, it is possible to calculate a call time and add a call charge. If the user cuts off the power supply by intentionally or unintentionally removing the power battery or intentionally removes the power, or if the remaining battery power is exhausted, the call is cut suddenly and no information about normal call termination is received. Accordingly, there is a problem in that it is difficult to add a call charge because the call time cannot be calculated.

Accordingly, the present invention has been made to solve the above-mentioned problems, and its object is to accumulate the talk time by accumulating the talk time repeatedly at regular call sections after the call connection of a predetermined mobile terminal, thereby accumulating the talk time accumulated even in abnormal call cutting. The present invention provides a method for calculating a talk time of a mobile communication system for calculating a call fee based on the basis.

1 is a block diagram showing the configuration of a mobile communication system to which a call duration calculation method according to the present invention is applied;

2 is a block diagram showing the configuration of a mobile terminal constituting a mobile communication system;

3 is a diagram illustrating an example in which a talk time of a mobile terminal is calculated for each predetermined section and integrated according to an exemplary embodiment of the present invention;

4 is a flowchart illustrating a method for calculating a talk time in a mobile communication system according to the present invention.

Explanation of symbols on the main parts of the drawings

10: mobile terminal, 12: base station,

14: base station controller, 16: exchange,

18: talk time counter, 20: billing information processing unit,

22: authentication center, 24: subscriber location storage,

30: RF signal processing section, 32: baseband conversion section,

38: digital signal processing unit, 40: keypad,

42: display portion, 44: program memory,

46: information memory, 48: data memory,

50: microprocessor.

In order to achieve the above object, according to the present invention, in a mobile communication system configured to enable a voice call by proceeding with a call connection with the other terminal according to the call connection request of the mobile terminal, the mobile terminal to a predetermined counterpart side terminal; Attempting a call connection, and accumulating and storing the talk time periodically according to a predetermined time unit when a call connection is made with the other party's terminal, and terminates the call when normal call termination or abnormal call disconnection is made. B. There is provided a method for calculating a talk time of a mobile communication system, which comprises adding a talk fee by the accumulated counted talk time until a call is cut.

According to the present invention configured as described above, when a call connection is made by requesting a call connection to a predetermined counterpart terminal from the mobile terminal, the call time is periodically accumulated and stored according to a predetermined time unit, and the call is normally made. If the call is cut off abruptly or in an abnormal way, the call charge is added based on the accumulated counting time until then, and even if the call is cut in an abnormal way, the call charge can be added normally. have.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

That is, FIG. 1 is a block diagram showing a configuration of a mobile communication system to which a call time calculation method according to the present invention is applied.

As shown in FIG. 1, a mobile communication system to which the method of the present invention is applied includes a mobile terminal 10, a base station 12, a base station controller 14, an exchange 16, an authentication center 22, Subscriber location storage (24).

The base station 12 searches and locates the location of each mobile terminal 10, and transmits / receives an RF signal to the mobile terminal 10, converts a communication protocol, and codes / decodes data. Decoding will be performed.

The base station controller 14 manages each base station 12 and performs control for allocation control and handover of the communication channel with respect to the mobile terminal 10.

In addition, the switch 16 is connected to a public telephone network (PSTN) and a comprehensive information communication network (ISDN) by wire, and performs a telephone exchange and data exchange function between a wired subscriber and a wireless subscriber or a wireless subscriber, the exchange ( 16, a call time counter 18 for counting a talk time for using a voice call of the mobile terminal 10 and a call charge based on the talk time counted by the talk time counter 18 are added. It comprises a billing information processing unit 20 to.

Here, when the mobile terminal 10 makes a voice call with a predetermined counterpart, the talk time counter 18 accumulates the talk time according to the voice call at regular intervals, for example, every 0.5 seconds. It will be updated. In addition, the charging information processing unit 20 calculates the call charge of the mobile terminal 10 corresponding to the call time finally accumulated from the call time counter 18.

In addition, the authentication center 22 is for authenticating the license status of the mobile terminal 10 in the exchange 16 by the unique number for the mobile terminal 10, the subscriber location storage unit ( 24 stores registration information of a pre-registered mobile terminal 10.

2 is a block diagram showing the configuration of a mobile terminal constituting a mobile communication system.

As shown in FIG. 2, the mobile terminal to which the present invention is applied includes an RF signal processor 30, a baseband converter 32, a speaker 34, a microphone 36, and a digital signal processor 38 ( Digital Signal Processor (DSP).

In the present invention, the keypad 40, the display unit 42, the program memory 44, the information memory 46, the data memory 48, and the microprocessor 50 are configured.

Here, the RF signal processor 30 demodulates and amplifies the RF signal received through the antenna, and modulates and outputs the IQ signal of the transmission target from the baseband converter 32.

The baseband converter 32 digitally converts the received signal from the RF signal processor 30, and analog-converts the digital signal from the digital signal processor 38, and the speaker 34 and the microphone. The digital transmission and the analog conversion of the signals transmitted and received at 36 are performed respectively.

Coding and decoding processing are performed on the signal transmitted / received to the baseband converter 32, and an equalization process is performed to remove multipath noise.

In addition, the keypad 40 is provided with a plurality of function keys for inputting a telephone number for voice call, input of a start and end function of a call operation, and execution input of various functional operations assigned to the mobile terminal. .

The display unit 42 displays, for example, a liquid crystal display (LCD) in order to display a result of performing a function key input of the keypad 40 and to display a result of performing various functional operations assigned to the mobile communication terminal. It is made of a thin display device such as.

The program memory 44 stores control program data for performing various functional operations of the mobile terminal, and software data of a protocol for processing voice and text data transmitted and received on a network.

In addition, the information memory 46 stores a variety of user information additionally input by the user together with the unique information of the mobile terminal, and the data memory 48 is used for processing voice calls and text messages on the network. Related data and the call time data calculated at the time of voice call are stored.

The microprocessor 50 generally controls various functional operations assigned to the mobile terminal, and attempts to make a call connection by using a predetermined telephone number input from the keypad 40 or a telephone number stored in the information memory 46. The digital signal processor 38 and the RF signal processor 30 are controlled to make a voice call with the other terminal connected to the call.

3 is a diagram illustrating an example in which a talk time of a mobile terminal is calculated for each predetermined section and integrated according to an exemplary embodiment of the present invention.

As shown in FIG. 3, when a call connection is made after a call connection attempt is made from the mobile terminal 10 to a terminal of a predetermined telephone number, a voice call proceeds at the talk time counter 18 of the exchange 16. The cumulative counting is performed periodically in units of a predetermined call interval such as, for example, 0.5 seconds, to repeatedly update and store the count value.

That is, in the talk time counter 18, when the first count value t1 is calculated by counting the elapsed time such as 0.5 seconds, the next call duration of e.g. 0.5 second is counted. The second count value t2 is accumulated by applying the first count value t1, and the third count value t3 is determined by counting the second count value t2 in the state where the next 0.5 second has elapsed. It adds up and accumulates. Accumulation application of the count value is repeatedly performed until normal call termination or abnormal call cutting of the mobile terminal 10 is made.

On the other hand, as shown in the figure, when the mobile terminal 10 proceeds with the voice call normally terminated or abnormal call disconnection, the billing information processing unit 20 by the call time counter 18 Finally, the total talk time T is calculated by the accumulated counted n th count value tn, and the call charge for the voice call is calculated based on the total talk time T.

Next, the operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG. 4.

First, while the power of the mobile terminal 10 is turned on and the position of the mobile terminal 10 is retrieved from the base station 12, the microprocessor 50 of the mobile terminal 10 is stored in the information memory 46. The terminal information is transmitted wirelessly, and the base station controller 14 transmits the terminal information of the mobile terminal 10 received through the base station 12 to the authentication center 22 through the exchange 16. Accordingly, the authentication center 22 confirms the legitimate registration state of the mobile terminal 10 based on the received terminal information.

At this time, if it is confirmed that the mobile terminal 10 is legally registered, the base station controller 14 sends an encryption code through the base station 12 to register the mobile terminal 10 in a usable state. do. According to such registration processing, the mobile terminal 10 enters the call waiting state (step S10).

In this state, the base station controller 14 determines whether there is a call connection attempt requesting a voice call for a predetermined counterpart terminal in the corresponding mobile terminal 10 (step S11).

As a result of the determination, when the mobile terminal 10 determines that a call connection attempt is made to a predetermined terminal, that is, another mobile terminal or a wired telephone terminal, the exchange 16 transmits information on the telephone number to be attempted to connect the call. To call the other party's terminal (step S12).

On the other hand, the switch 16 determines whether or not a call connection with the other party's terminal which desires a voice call has been made for the call connection attempt of the mobile terminal 10 (step S13).

As a result of the determination, when the counterpart terminal does not respond to the call connection attempt of the mobile terminal 10 even after a predetermined time elapses, it is determined whether the mobile terminal 10 performs the call cancel operation. (Step S14).

As a result of the determination of step S14, when the mobile terminal 10 performs the call cancel operation, the call connection attempt is released and the process returns to step S10.

However, in the determination result of step S13, if it is determined that the call connection between the mobile terminal 10 and the counterpart side terminal is established, the call time according to the voice call proceeds at the talk time counter 18, for example, 0.5 seconds. Accumulated counting is periodically performed in units of predetermined call intervals such as to repeatedly update and store the count value t as the total talk time T (step S15).

In this state, the exchange 16 determines whether the call is terminated normally or terminated in an abnormal manner in the mobile terminal 10 which has performed the call connection function (step S16). That is, the abnormal call disconnection in the mobile terminal 10 is caused by the power supply accumulated in the power battery while the voice call with the other party is in progress, or by the interruption of the power supply caused by intentionally removing the power battery. .

As a result of the determination, if it is determined that the end of the call or the call is cut off while the mobile terminal 10 is conducting the voice call with the other party, the call time counter 18 of the exchange 16 determines the end time of the call. The information of the total talk time T accumulated regularly until the call cutting point is calculated as the final talk time, and the billing information processing unit 20 finally counts the total talk time (counted at the talk time counter 18). Based on T), a call charge for the mobile terminal 10 is calculated (step S17).

Therefore, in the embodiment of the present invention as described above, even when the mobile terminal 10 performs an abnormal call disconnection by removing the power battery during the voice call with the other party, the call calculated until the call disconnection Based on the time, the call charge can be calculated normally.

According to the present invention made as described above, it is possible to periodically accumulate the talk time of the mobile terminal so that even if a normal call termination or abnormal call cutting is made based on the cumulative counted talk time, a call charge may be added. As such, even if the mobile terminal abruptly cuts the call by an abnormal method, it is possible to add a normal call charge in the billing system of the exchange side that manages the call charge.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes are intended to fall within the scope of the claims set forth.

Claims (1)

In the mobile communication system configured to make a voice call by proceeding with the call connection with the other terminal according to the call connection request of the mobile terminal, Attempting a call connection with a predetermined counterpart terminal in the mobile terminal; Accumulating counting talk time according to a predetermined time unit when the call connection with the other terminal is made, If the normal call termination or abnormal call disconnection is made, the method of calculating the talk time of the mobile communication system comprising the step of adding a call charge as much as the accumulated time until the end of the call or disconnection.