KR100661540B1 - mobile communication terminal system and signal link method therefore - Google Patents

Abstract

The present invention compares the strength of a common pilot channel (CPICH) signal or pilot channel synchronization transmitted from a base station system according to a set reference value and outputs the comparison signal, and the strength of the CPICH signal or pilot channel input from the comparator. The microcomputer generates the alarm control signal, the download status control signal and the redial control signal by determining the comparison signal according to the comparison signal, and stores the telephone number currently connected to the terminal according to the storage control signal of the microcomputer. A mobile communication terminal system including a redialing device unit for dialing is provided.

As described above, the present invention checks that the terminal moves to the radio shading area through the internal comparison means using CPICH or pilot channel to alert the user to prepare for the disconnection of the call signal and disconnects the call when leaving the radio shading area. By automatically connecting again, it maximizes the functionality of the terminal and if the call signal is lost while downloading the data, it saves the download status and executes the download operation again from the point of disconnection when the call signal is connected. There is no need to execute a download task, which greatly improves the convenience of the terminal.

Description

Mobile communication terminal system and signal link method thereof

1 is an explanatory diagram illustrating a signal link method of a conventional mobile communication system.

2 is a block diagram illustrating the present system.

3 is a flowchart of the present invention.

<Detailed Description of Codes>

1: terminal system 2: base station system

3: wireless signal processing unit 4: modem

5: comparator 6: micom

7: Alarm unit 8: Redialing unit

9: variable reference value setting unit 10: memory unit

11: video signal processor 12: audio signal processor

13: camera 14: LCD panel

15: Speaker 16: Download Status Checker

17: terminal 18: reference value manual setting unit

The present invention relates to a mobile communication terminal system and a signal linking method thereof. In particular, a mobile terminal system checks that a terminal moves to a radio shading region through internal comparison means using a CPICH or a pilot channel to prepare for disconnection of a call signal. The present invention relates to a mobile communication terminal system and a signal linking method for maximizing the functionality of a terminal by automatically connecting a disconnected call when the alarm leaves the radio shading area.

In general, wireless data communication refers to a communication function of wirelessly transmitting and receiving various data such as letters, numbers, and images through a base station system using a portable terminal capable of wireless transmission and reception. That is, a mobile communication system for exchanging or searching data in both directions while moving by using various terminals such as a cellular phone, a portable computer, a facsimile, and a credit card inquiry machine. Among these mobile communication systems, in particular, the mobile communication system divides the service area into hexagonal cells with a diameter of several km to several ten kilometers in North America in the early 1980s, and then repeatedly uses the same frequency channel in geographically separated cells. The rapid growth of the first commercialization of a cellular-phone mobile communication system that implements a radio channel switching function between cells according to the movement. In recent years, a third generation mobile communication system called IMT-2000 has been developed and used, and this system can be used for various communication services supported by fixed communication networks such as PSTN / ISDN / B-ISDN according to the needs of mobile users. A mobile communication system that enables access to an information service network including audio and video data using a wireless link.

 Then, referring to the conventional mobile communication terminal system as described above with reference to FIG.

A mobile communication terminal capable of transmitting and receiving video and audio signal information by connecting to a wireless service network through a wireless link, for example, an IMT-2000 terminal 70 and a base station for processing a call signal transmitted wirelessly from the mobile communication terminal 70. The system 71 is connected to the base station system 71 in a wired manner and connects a call signal to a communication network such as an external communication network such as the Internet 72, and the communication is connected to the Internet 72. Server 74 to provide a service.

On the other hand, looking at the operation of the conventional mobile communication system as described above, if the user of the mobile communication terminal 70 wants to talk to the other terminal 75, when a pilot signal is caught on the terminal 70, the access channel A call connection is attempted through the base station system 71 through an access channel. When the call is connected to the other terminal 75 through the traffic channel via the base station system 71, the call function is executed by the base station system 71 by the call signal processing. At this time, the power control of the terminal 70 and the base station system 71 is constant between the terminal 70 and the base station system 71 by performing power control through a common pilot channel (CPICH) and a pilot channel during the asynchronous operation. Will keep. In this case, the CPICH or pilot channel refers to a channel that provides information on power strength between the terminal 70 and the base station system 71 for power control.

After the above process, if the user of the terminal 70 wants to download data by accessing a specific site of the Internet, the user may select an Internet menu from his terminal 70, in which case the gateway 73 is connected to the terminal. It forms an Internet menu environment on the LCD panel of (70). Then, when the user of the terminal 70 clicks on the corresponding site in the Internet menu environment displayed on his terminal 70, the user of the terminal 70 via the base station system 71, the gateway 73, and the Internet 72 The server 74 is connected. When the user searches for the desired data from the server 74 through the Internet transmission path connected on the terminal 70 and clicks the download content, the user receives the data from the server 74 through the transmission path. Since it is transmitted to and stored by using), the user of the terminal 70 takes necessary measures.

However, the conventional mobile communication terminal system as described above receives power control through a CPICH or pilot channel to process a call signal. At this time, when the terminal 70 moves to a radio wave shading area, a service currently executed, for example, a video call or Functions such as data download are disconnected until they leave the radio shade area, and therefore, call signals cannot be connected reliably, thereby degrading the stability of the terminal system.

In addition, in the conventional mobile communication terminal system as described above, when the terminal 70 is moved to the radio shading area while downloading data, the current call signal is cut off, so if necessary, the data is downloaded again from the beginning. There was a problem to receive.

Accordingly, the present invention has been invented to solve the conventional problems as described above, by checking that the terminal is moved to the radio shading area through the internal comparison means using the CPICH or pilot channel to prepare for the disconnection of the call signal It is an object of the present invention to provide a mobile communication terminal system and its signal link method that maximizes the functionality of the terminal by automatically alerting the user and leaving the radio shade area again.

Another object of the present invention is to save the download status when the call signal is cut off while downloading the data, and when the call signal is connected, the download task is executed again from the time of disconnection, so there is no need to execute the download task from the beginning again. The present invention provides a mobile communication terminal system and a signal link method thereof that significantly improve the ease of use.

Another object of the present invention is to manually set the variable reference value for checking through the manual mode, so that if the user does not want to alarm frequently, the range of the reference value is lowered, while in the case of important data download, the reference value is increased further. It is possible to provide a mobile communication terminal system and a signal link method thereof that can maximize the functionality of the system.

The present invention for achieving the above object is a mobile communication terminal system for transmitting and receiving video and audio signals through a base station system, the comparison according to the reference value set the strength of the CPICH or pilot channel signal transmitted from the base station system A comparator for outputting the comparator signal, a micom that determines the comparison signal according to the strength of the CPICH or pilot channel signal inputted from the comparator, and generates an alarm control signal, a download status control signal, and a redial control signal, and the micom; According to the storage control signal of the present invention provides a mobile communication terminal system including a redialing device unit for storing and then redialing the phone number connected to the call terminal.

Another feature of the present invention is the CPICH / pilot channel checking step of checking the power strength of the CPICH or pilot channel transmitted from the base station system during the operation mode of the terminal, and the CPICH CPICH or transmitted from the base station during this CPICH / pilot channel checking step Comparing the power strength of the pilot channel according to the set reference value, if it is determined that the terminal is moving to the radio shading area, the user is informed that the terminal is moving to the radio shading area by voice and video signals, and the warning function is executed. If the call termination signal is not input even after a predetermined time elapses after the execution of the warning function, a telephone number storing step of automatically switching to the other party's current telephone number and a phone number storing step after the telephone number storing step is performed. The power strength of the transmitted CPICH / pilot channel is higher than the set reference value It determines that the call is connected normally when the input again provides a signal link method of the mobile communication terminal system including a self-healing phase on which the call is automatically restored to a call to a telephone number re-dial stored before being cut.

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

The system of the present invention, for example, the IMT-2000 terminal system 1, includes a wireless signal processor 3 for RF signal processing of video and audio communication signals transmitted and received via the base station system 2, as shown in FIG. The modem 4 which modulates / demodulates the communication signal transmitted / received by the radio signal processor 3 and the strength of the CPICH or pilot channel signal inputted from the modem 4 are compared according to a threshold power and compared therewith. A comparator 5 for outputting a signal and a comparison signal according to the strength of the CPICH or pilot channel signal inputted from the comparator 5 are judged to generate an alarm control signal, a download status control signal, and a redial control signal. The microcomputer 6 which controls the functions of 1) as a whole, and the current state of data being downloaded to the memory unit 10 according to the download status control signal of the microcomputer 6, for example, a few% of the total data is currently downloaded. Check whether the terminal 1 is currently entering the radio wave shading area according to the alarm control signal of the microcomputer 6 and the download status checker 16 which checks whether or not it is input to the microcomputer 6. Redialing device unit for storing and redialing the alarm device unit (7) for emitting voice and video signals, and the phone number currently connected to the terminal (1) according to the storage control signal of the microcomputer (6) 8).

One end of the comparator 5 has a threshold power that varies according to the type of communication signal. For example, when a signal to which a call is connected is a data signal, the first reference value or a voice signal having a high range of the reference value is formed. The variable reference value setting unit 9 for setting the second reference value formed in a range lower than the first reference value to be variable by the microcomputer 6 is connected. Here, the variable reference value setting unit 9 is connected to a reference value manual setting unit 18 that allows a user to manually set a second reference value formed in a range lower than the first reference value in the case of a voice signal. At this time, the reference value manual setting unit 18 is to strictly set the standard in the case of data requiring a stable call, and can be set to lower the reference value in the case of a voice call that is not unreasonable even if a loose standard is applied. In order to reduce ringing, the reference value is manually set through the reference value manual setting unit 18 in the manual mode. On the contrary, in case of important data, the user may set the reference value more strictly in manual mode.

In addition, one end of the modem 4 is connected to a video signal processor 11 for processing the input and output video signal, and an audio signal processor 12 for processing the audio signal. The camera 13 and the LCD panel 14 are connected to one end of the video signal processor 11, and the speaker 15 is connected to one end of the audio signal processor 12.

Next, a signal link method applied to the above-described system of the present invention will be described.

When the terminal is set up as shown in FIG. 3, the present invention proceeds from the initial state S1 to the normal mode execution step S2 to execute the call mode or data download function set by the user. Then, after the normal mode execution step (S2) to proceed to the variable reference value manual mode determination step (S3) it is determined whether the manual mode for manually setting the variable reference value from the current user is set. In this case, if the manual mode for manually setting the variable reference value is set by the user as a result of the determination during the variable reference value manual mode determination step (S3), the process proceeds to the manual mode execution step (S4) to set the variable reference value manually set by the user. Set to the reference value and check the CPICH or pilot channel channel. However, if the manual mode for manually setting the variable reference value is not set by the user as a result of the determination during the manual mode determination step (S3) of the variable reference value, the automatic mode is determined and the process proceeds to the automatic mode execution step (S5). Set the reference value automatically and check the CPICH or pilot channel channel.

After the automatic mode execution step (S5), the process proceeds to the CPICH / pilot channel checking comparison step (S6) to determine whether the CPICH or pilot channel signal currently transmitted from the base station system is smaller than a predetermined threshold power. At this time, when the CPICH / pilot channel checking comparison step (S6) is determined as a result that if the power strength of the CPICH or pilot channel transmitted from the base station is greater than the set reference value, since the call is normally connected, return to the previous step (S2) and repeat the loop. To perform.

However, as a result of the CPICH / pilot channel checking comparison step (S6), if the power strength of the CPICH or pilot channel transmitted from the base station is smaller than the set reference value, it is determined that the current terminal is moved to the radio shading area and the warning function is executed. Proceeding to step S7, the user is informed that the terminal is moving to the radio shading area by voice and video signals and is requested to terminate the call. Then, after the warning function execution step (S7) proceeds to the call termination determination step (S8) to determine whether or not the call termination signal is input from the user within a predetermined time. At this time, if the call termination signal is input from the user within a predetermined time as a result of the determination in the call termination determination step (S8), the process ends to the call termination step (S9) to terminate the call. However, if the call termination signal is not input from the user within a predetermined time as a result of the determination in the call termination determination step (S8), the process switches to the automatic mode and proceeds to the data download determination step (S10). During the data download determination step (S10), it is determined whether the current terminal is downloading data. If the data is being downloaded as a result of the determination, the process proceeds to the data download status checking step (S11) to check the current status of the data being downloaded to the terminal. After storing the information, it proceeds to the CPICH / pilot channel iterative checking step (S12).

In addition, if it is determined during the data download determination step (S10) that the current terminal is not downloading data, it is determined that the call mode and proceeds to the phone number storage step (S13) to automatically save the other party's current phone number The CPICH repetition checking step S12 is performed.

Meanwhile, in the CPICH / pilot channel repeat checking step (S12), it is continuously checked whether the CPICH or pilot channel signal currently transmitted from the base station system is smaller than a set threshold power, and the CPICH or pilot channel transmitted from the base station is determined as a result. If the power strength is less than the set reference value, the CPICH / pilot channel checking function is continued and the loop is repeated. However, if it is determined during the CPICH / pilot channel repeat checking step (S12), if the power strength of the CPICH or pilot channel transmitted from the base station is greater than the set reference value, since the call is normally connected again, the process proceeds to the automatic call recovery step (S14). do. In this call automatic recovery step (S14), the call is automatically connected to a telephone number or an Internet site that was automatically stored before the call was disconnected.                     

In addition, after the call automatic recovery step (S14), the process proceeds to the previous mode determination step (S15) to determine whether the data was being downloaded immediately before the call of the terminal is disconnected. At this time, if it is determined during the previous mode determination step (S15) that the data is not being downloaded immediately before the call of the terminal is disconnected, that is, in the call mode, proceeds to the call mode redo step (S16) to the currently connected call channel Resume the call.

However, if the data was being downloaded immediately before the call of the terminal was disconnected as a result of the determination in the previous mode determination step (S15), it proceeds to the data download redo step (S17) and the amount of download data stored just before the call is disconnected. Information is sent to the base station, and the data download function is executed again from the point of disconnection.

In other words, a mobile communication terminal 1, for example, an IMT-2000 system is set up by a user to perform a call mode or data download, wherein the terminal 1 transmits a CPICH / pilot channel transmitted from the base station system 2. Check the channel. In addition, when the user of the terminal 1 calls another terminal 17 through the key panel (not shown), the microcomputer 6 recognizes this and inputs it to the modem 4. Then, the modem 4 modulates the input telephone number signal and inputs it to the radio signal processor 3, and the radio signal processor 3 RF-processes the telephone number signal and transmits the signal to the base station system 2 to which the call is connected. Communication with the counterpart terminal 17 is performed. Therefore, the video and audio signals of the other party input via the base station system 2 are processed by the radio signal processing unit 3 and then input to the modem 4 so that the modem 4 receives the call signal. Is demodulated and input to the video signal processor 11 and the audio signal processor 12. FIG. The video signal processor 11 processes the video signal input from the counterpart terminal and displays the video signal on the LCD panel 14, and the audio signal processor 12 also processes the audio signal of the counterpart terminal. And emits to the outside through the speaker 15 or the handset (not shown) in synchronization with the image signal on the LCD panel 14. Thus, the user can talk while watching the moving picture on the LCD panel 14 in the usual manner. At this time, when the reference value of the CPICH or pilot channel signal is set through the reference value manual setting unit 18, the microcomputer 6 operates in the manual mode and sets the input reference value if the user sets the reference value for a predetermined time. If no signal is input, it operates in auto mode and uses the preset value as the reference value.

When the reference value of the CPICH or pilot channel signal is set as described above, the microcomputer 6 continuously determines whether the CPICH or pilot channel signal transmitted from the base station system is smaller than the threshold power set through the comparator 5. . Here, if the power of the CPICH or pilot channel signal transmitted from the base station is greater than the set reference value, the call is normally connected and maintains the current call connection state.

However, if it is detected that the strength of the CPICH or pilot channel signal transmitted from the base station is smaller than the reference value set by the comparator 5, the comparator 5 inputs the comparison signal to the microcomputer 6. Then, the microcomputer 6 determines that the terminal 1 is currently moving to the radio wave shading area according to the input comparison signal of the comparator 5, and alerts or displays the fact through the alarm device 7. To the user. In this case, if the call termination signal is input from the user within a predetermined time, the microcomputer 6 terminates the function of the terminal 1.

However, when the call termination signal is not input from the user even after a predetermined time elapses, the microcomputer 6 determines whether a signal such as data, for example, a data file, is being downloaded from the external communication system. At this time, when the function of the terminal 1 is operating in the voice call mode, the microcomputer 6 stores the phone number of the other party currently connected to the call through the redialing device unit 8. However, if the function of the terminal 1 is currently operating as a download function of the data, the microcomputer 6 may download the current data through the download status checker 16, for example, a data file downloaded from the external communication network to the memory unit 10. Check the amount of and automatically save the current status information to internal memory.

On the other hand, when the terminal 1 is out of the radio shading area, the power of the CPICH or pilot channel signal transmitted from the base station system 2 is greater than the reference value set by the comparator 5, wherein the comparator (5) inputs this comparison signal to the microcomputer (6). Accordingly, the microcomputer 6 determines the comparison signal input from the comparator 5 to recognize that the current terminal 1 is out of the radio shading area, and the corresponding function before the terminal 1 enters the radio shading area. Mode For example, it is determined whether the call mode or the data download mode is in progress. At this time, if the terminal 1 is operating in the call mode, the microcomputer 6 redials the phone number stored just before the call is disconnected through the redialing device unit 8 to reconnect with the caller. Initiate a recall.

On the other hand, when the operation mode of the terminal 1 is downloading data immediately before the call of the terminal 1 is disconnected, the microcomputer 6 disconnects the call stored in the internal memory through the download status checker 16. The data storage amount information up to the last time is transmitted to the base station system, and data is downloaded from the base station system immediately after the data download is stopped, and the corresponding data is downloaded to the memory unit 10.

Therefore, according to the present invention, even if the call is disconnected while downloading, there is no need to download the data from the beginning again when reconnecting the call.

Here, the setting reference value of the comparator 5 may be set differently according to the type of communication signal. For example, the microcomputer 6 may maintain data in which a signal connected to a call through the variable reference value setting unit 9 maintains a stable call. In the case of a signal, a first reference value having a strictly high range of the reference value is set. If the communication signal is a voice signal, a second reference value formed in a loosely lower range than the first reference value may be variably set. When the reference value manual setting unit 18 selects the automatic mode when setting the reference value, the user needs to select the manual mode to lower the reference value and reduce the important value if the user wants to reduce the alarm sound frequently due to the strict reference value. In this case, the user can set the reference value more strictly in manual mode.

 As described above, the present invention uses a CPICH or pilot channel to check that the terminal moves to a radio shading area through an internal comparison means to alert the user to prepare for a break of a call signal and to cut off the radio shading area. By automatically reconnecting the call, it has the advantage of maximizing the functionality of the terminal.

In addition, according to the present invention, if the call signal is cut off while downloading the data, the download status is stored and the download operation is executed again from the time of disconnection when the call signal is connected. Therefore, there is no need to execute the download operation from the beginning again. It also has the effect of significantly improving the convenience of using the terminal.

Claims (6)

In the mobile communication terminal system for transmitting and receiving video and audio signals via a base station system, A variable reference value setting unit that adjusts a reference value according to a type of communication signal passing through the base station system, and compares the strength of a CPICH or pilot channel signal transmitted from the base station system according to the reference value set by the reference value setting unit A comparator for outputting a signal, a micom that determines an comparison signal according to the strength of a CPICH or pilot channel signal input from the comparator, and generates an alarm control signal, a download status control signal, and a redial control signal, and the storage control of the micom And a redialing device unit for storing a phone number currently connected to a call according to a signal and then redialing the call recovery. The mobile communication terminal system according to claim 1, wherein an end of the microcomputer is connected with an alarm device which notifies the user that the terminal is currently entering the radio shading area according to an alarm control signal. The mobile communication terminal system according to claim 1, wherein a download status checker is connected to one end of the micom to check and input a current status of data being downloaded to the memory unit according to the download status control signal of the microcomputer. According to claim 1, One end of the comparator can be automatically or manually set a plurality of variable reference value setting unit and a variable reference value for variable setting according to the type of traffic in the terminal, the user can set the variable reference value arbitrarily A mobile communication terminal system, characterized in that the reference value manual setting unit is connected. In the signal link method of a mobile communication terminal through which a communication signal is transmitted and received via a base station system, CPICH / pilot channel checking step of checking the power strength of the CPICH or pilot channel transmitted from the base station system during the operation mode of the terminal, and set the power strength of the CPICH / pilot channel transmitted from the base station during this CPICH / pilot channel checking step If it is determined that the current terminal is moving to the radio shading area according to the reference value, the user is informed that the terminal is moving to the radio shading area by voice and video signals, and the warning function is executed after the warning function is executed. If the call termination signal is not input even after the elapse of time, the phone number storage step of switching to the automatic mode and automatically storing the current party's phone number, and the CPICH or pilot channel transmitted from the base station after the phone number storing step. If the power strength is input over the set reference value, the call is normal. And a call auto-recovery step of automatically recovering the call by redialing the stored phone number before determining that the call is disconnected. The data download status checking step of checking the current status of the data being downloaded to the terminal and storing the corresponding information when the data is being downloaded after the execution of the warning function, and recovering the call after the download status checking step. And a data download redo step of notifying the base station of information about the amount of download data stored immediately before the call is disconnected, and executing the data download function again from the time point at which the call was disconnected. Link way.

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