JP3332111B2 - Mobile communication system and communication control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system for performing data communication using a mobile telephone using wireless communication, for example, a mobile communication using a personal handy phone (PHP), and a system thereof. It relates to the communication control method used.

[0002]

2. Description of the Related Art Generally, when data communication is performed using an information processing device such as a personal computer (hereinafter abbreviated as a personal computer) via a public line, a data communication connector is connected to an RS-232C connector provided on the personal computer. A device configuration in which a modem is connected and a data communication modem and a public line are connected is used. That is, the personal computer and the data communication modem are physically connected by wire.

When executing data communication, a personal computer
The data communication modem is controlled by a command typified by a communication command called a so-called AT command.
The communication command is configured on the premise that the data communication modem is connected by wire to the data communication modem, and can execute a predetermined function.

[0004] By the way, mobile phones using radio include car phones and cellular phones called cellular phones. Cellular Phone provides services nationwide,
In major cities, you can make (call) and receive (receive) calls over a wide area. In the cellular phone, it is also possible to transmit data by communication (personal computer communication) using a personal computer (hereinafter abbreviated as a personal computer) or to execute FAX communication.

[0005] In recent years, instead of the conventional analog signal communication, a digital cellular phone service for performing communication using digital signals has been started. 2. Description of the Related Art A large-scale communication system has been constructed for cellular phones to enable communication over a wide range.

As a simple mobile phone, unlike a cellular phone, there is a cordless phone widely used for home use. In a cordless telephone, communication is performed between a cordless base unit (base station) and a cordless slave unit (mobile station) connected to a public line based on a protocol unique to the cordless telephone. The cordless telephone performs communication by analog signals, and the content of communication by the cordless handset is only voice communication.

As a next-generation mobile telephone using digital signals instead of a cordless telephone using analog signals, a digital cordless telephone, that is, a personal handy phone (hereinafter abbreviated as PHP).
Is planned.

[0008] Unlike the cellular phone, the PHP is not a large-scale communication system. It uses a small-output PHP slave (mobile station) not only at home but also a public base station at a station, a shopping street, a public telephone box, or the like. By providing it, it can be used outdoors.

[0009] Since PHP performs communication using digital signals, it becomes possible to perform data communication services that cannot be realized with a cordless telephone using analog signals, for example, PC communication or FAX communication from outside. In realizing this service, a configuration has been considered in which a modem function corresponding to a data communication modem is provided on the public base station side in order to improve portability.

That is, even when performing personal computer communication or facsimile communication from outside, each user need not carry a modem for data communication, but only carry a personal computer or a facsimile machine.

[0011]

SUMMARY OF THE INVENTION However, PHP
A mobile communication system using a slave has the following problems. Since the modem function is provided in the public base station, the personal computer and the data communication modem are not connected by wire, and communication software (communication command) for controlling the data communication modem connected by wire in the related art is used. ), It becomes impossible to transmit and receive commands and control communication between the personal computer and the data communication modem.

That is, the communication software needs to monitor the status during communication and to set / change the data communication modem in accordance with the case where the communication software passes through the wireless communication path. Data communication cannot be executed with the same control as when a modem is connected.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and does not require physical communication without changing communication software designed to control a wired data communication modem. It is an object of the present invention to provide a mobile communication system and a communication control method capable of executing data communication using a modem function in a base station that has not been performed.

[0014]

According to the present invention, there is provided an information processing apparatus for outputting a communication command for operating a modem function for executing data communication via a public line. An interface unit that inputs and holds the communication command output from the device and outputs data corresponding to the communication command at a predetermined timing, and is connected via the information processing device and the interface unit, from the interface unit. A mobile station that performs processing in accordance with the output data; and a modem function connected to the mobile station via a wireless transmission line and connected to the public line to perform data communication via the public line. And the content of the data output at a predetermined timing from the interface means via the mobile station. Flip with and a base station for operating the modem function, characterized in that to enable data communication by the information processing apparatus via a wireless communication path between the base station and the mobile station.

Also, the present invention provides a method for transmitting data via a public line.
For operating the modem function of the base station that performs
Information processing apparatus for outputting control data and wireless communication with said base station
Connected to mobile stations connected via transmission path
In the communication control method in the interface device,
The control data output from the information processing device is
If it is the initial setting information for the dem function,
Saves setting information, and saves communication between the mobile station and the base station.
After the line link is established, the initialization information is transferred to the
Output to a mobile station, and the control data from the information processing device.
Is a modem control command for controlling the modem function and
Dial request command to control connection with public line
If the default setting information is
The modem function of the base station is initialized based on
After outputting a dial request command to the mobile station,
Via the public line by the dial request command
After being connected to the other
Output to the mobile station and based on the modem control command.
After the modem function of the base station is activated,
Enable data communication by the information processing device
It is characterized by.

Further, the present invention provides a method for transmitting data via a public line.
For operating the modem function of the base station that performs
Information processing apparatus for outputting control data and wireless communication with said base station
Connected to mobile stations connected via transmission path
In the communication control method in the interface device,
The control data output from the information processing device is
If it is the initial setting information for the dem function,
Setting information, and stores the control data from the information processing apparatus.
A modem control command to control the modem function
Dial request command for controlling connection to the public line
If each command, save each and the dial
Outputting a request command to the mobile station, and
A radio link with a base station is established and said dial request
Command to connect to the other party via the public line.
Output the initial setting information to the mobile station,
The modem function of the base station based on the initial setting information.
After the is initialized, the modem control command is
Output to the mobile station, based on the modem control command.
After the modem function of the base station is activated, the information
It is a special feature to enable data communication by the processing unit.
Sign.

[0017]

According to such a configuration, the information processing apparatus inputs and holds a communication command output for performing data communication using the data communication modem connected by wire,
By outputting this communication command at a predetermined timing accompanying the wireless communication control between the mobile station and the base station, the modem function provided in the base station is controlled, and the data with the partner via the public line is transmitted. Communication can be set.

Further, initial setting information for controlling a modem function, a modem control command included in a communication command,
Depending on the relationship between the dial request command and the procedure for establishing a wireless link between the mobile station and the base station, and the predetermined procedure to be taken to enable data communication for the modem function. By outputting each data at a predetermined timing, the data communication by the information processing apparatus is enabled.

[0019]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a mobile communication system in the present embodiment. As shown in FIG. 1, in the mobile communication system according to the present embodiment, a wireless communication function is executed between the PHP slave device 10 and a public base station 12 installed, for example, outdoors. The public base station 12 is installed in a public telephone booth or the like.

The public base station 12 is connected to the public line 14, and when a call is made from the PHP handset 10, a call can be made with the other party via the public base station 12 and the public line 14. In addition, data communication by a personal computer (hereinafter abbreviated as a personal computer) 16 and facsimile communication by a facsimile apparatus (hereinafter abbreviated as FAX) 17 can be performed via the PHP slave device 10. The data communication may be performed by another information processing device such as a word processing device. In this embodiment, the public line 14 is
Digital line such as SDN (Integrated Services Digital Network).

The personal computer 16 and the PHP slave device 10 are connected by a connection cable 19a via an interface device 18. The FAX 17 is provided with an interface function (not shown) having the same function as the interface device 18 inside, and is connected to the PHP slave device 10 via the connection cable 19b via this function.

FIG. 2 is a block diagram showing the configuration of the PHP slave unit 10. As shown in FIG. 2, the PHP slave device 10 includes a microcomputer 20, a radio unit 21, a codec 22, an ADPC
M unit 23, PCM unit 24, button input unit 25, speaker 26, microphone 27, connector unit 28, and antenna 29
Is provided.

The microcomputer 20 controls each part of the PHP slave 10 according to a program stored in a memory (not shown). The microcomputer 20 controls a button input unit 25 by inputting a command input from the connector unit 28 via a control line or pressing a dial button.
Control of the telephone function in accordance with the data input from the PC, and control of the codec 22 and the ADPCM unit 23 (switching between voice communication and data communication by turning on / off). The operation of the dial buttons can be emulated by giving a predetermined remote command from the outside to the microcomputer 20 via the connector unit 28 and the control line.

The radio unit 21 is connected to the antenna 29 and the codec 22, and transmits and receives data to and from the radio unit 30 provided in the public base station 12 via the antenna 29 according to a predetermined protocol. The wireless unit 21 inputs and outputs data transmitted to and received from the public base station 12 to and from the codec 22.

The codec 22 includes a radio unit 21, an ADP
Connected to the CM unit 23 and the connector unit 28, and when performing a voice call, under the control of the microcomputer 20, the data to be transmitted to the public base station 12 output from the ADPCM unit 24 is transmitted by a radio signal. (An analog signal) and received via the radio unit 21.
Is converted into a digital signal. When performing data communication / FAX communication, data is input / output to / from the personal computer 16 via the connector unit 28 and the data line (the ADPCM unit 23 is not used).

The ADPCM unit 23 is provided between the PCM unit 24 and the codec 22, and has an ADPCM (Adaptive
High-efficiency compression is performed by Differential Pulse Code Modulation (Adaptive Differential Pulse Code Modulation).

The PCM unit 24 is connected to the ADPCM unit 23, the speaker 26 and the microphone 27, and is connected to a PCM (Pulse Co
de Modulation: pulse code modulation). When making a voice call, the PCM unit 24 converts a digital voice signal to be output from the speaker 26 transmitted from the public base station 12 and obtained through the radio unit 21, the codec 22, and the ADPCM unit 23 into an analog voice signal. In addition, it converts an analog audio signal input from the microphone 27 into a digital audio signal and outputs the digital audio signal to the ADPCM unit 23.

The button input unit 25 controls the input of a dial button (not shown) provided for operating the PHP slave unit 10. The button input unit 25 outputs data corresponding to the pressed one of the dial buttons to the microcomputer 20. The dial buttons are used when dialing from the PHP cordless handset 10, and include various function buttons in addition to numeric buttons from 0 to 9 and "*" and "#" buttons.

The speaker 26 is connected to the PCM unit 24, and outputs a sound based on voice data from the other party. The microphone 27 is connected to the PCM unit 24 and inputs a voice to be transmitted to the other party.

The connector section 28 is connected to the personal computer 16 or the FA via the PHP slave unit 10 via connection cables 19a and 19b.
This is an interface for connecting X17. The data line connected to the connector unit 28 is
And the control line is connected to the microcomputer 20.

The antenna 29 is for transmitting and receiving signals to and from the base station 12. FIG. 3 is a block diagram showing a configuration of the public base station 12. As shown in FIG. As shown in FIG. 3, the public base station 12 includes a radio unit 30, an error correction unit 3,
1, data communication unit 32, PCM unit 33, ADPCM unit 3
4 and an antenna 35. Each functional unit constituting the public base station 12 is controlled by a microcomputer (not shown).

The radio unit 30 is connected to an antenna 35, and via the antenna 35, the PHP slave (base station) 10
Data transmission / reception is performed with a predetermined protocol. The wireless unit 30 transmits data transmitted / received to / from the PHP slave device 10 to the ADPCM unit 34 (during a voice call).
Alternatively, input and output are performed with the error correction unit 31 (during data communication).

The error correction unit 31 is, for example, an ASIC (Ap
Replication Specific IC), which performs link control of wireless communication between the PHP slave device 10 and the public base station 12, and corrects a data transfer error.

The data communication section 32 performs data communication control when performing data communication or facsimile communication via the PHP slave device 10. The data communication unit 32 is provided with a modem (modulation / demodulation) function and a modem control function for controlling the function. The base station 12 is basically configured to perform voice communication, and is provided with an adapter to which a predetermined functional unit can be added to realize a function other than voice communication. Data communication control unit 3
2 is used by being attached to a data / FAX communication adapter provided in the base station 12.

The PCM unit 33 is connected to the data communication unit 32, and is connected to the other party (for data communication, for example, a host device) via the public line 14 during data communication. The PCM unit 33 performs a PCM encoding / decoding process for inputting / outputting data to / from a public line 14 which is a digital communication network such as ISDN.
4 is converted to an analog signal, and an analog signal to be transmitted to a communication partner is converted to a digital signal and transmitted to the public line 14.

The ADPCM section 34 is provided between the radio section 30 and the public line 14, and performs high-efficiency compression by ADPCM (Adaptive Differential Pulse Code Modulation). A
When making a voice call, DPCM section 34 transmits 64 from public line 14 (ISDN) to be transmitted to PHP slave 10.
It compresses and converts digital audio data of kbps into a digital audio signal of 32 kbps, and performs the reverse conversion of digital audio data to be transmitted to the public line 14. The ADPCM unit 43 is turned on / off under the control of a microcomputer (not shown). By turning on / off the ADPCM unit 43, a voice signal path (voice call) and a data signal path (data communication) are switched.

The antenna 35 is for transmitting and receiving signals to and from the PHP slave device 10. In the base station 12, at the time of data communication, the radio unit 30, the error correction unit 31,
The path of the data communication unit 32 and the PCM unit 33 is used, and at the time of voice communication, the radio unit 30, the error correction unit 31, the ADPC
The path of the M section 34 is used. The switching of the route is performed by a microcomputer (not shown) for controlling the entire base station 12.

FIG. 4 is a block diagram showing the configuration of the interface unit 18. As shown in FIG. As shown in FIG. 4, the interface unit 18 includes an error correction unit 40, a control unit 41, and a UAR
T (Universal Asynchronous Recever Tranceiver) 4
2.

The interface section 18 can be of an IC card type which can be connected to a card interface (IC card slot) provided in the personal computer 16, for example. The card interface is, for example, JEIDA
(Japan Electronic Industry Development Association
n) / PCMCIA (Personal Computer Memory Card)
International Association) is used. Therefore, the interface unit 18 includes the personal computer 1
6 (I) for connecting to the parallel bus
/ F) 43, interfaces 44a, 44b to which connection cable 19a for connecting to PHP slave unit 10 is connected
(For control lines and data lines).

The error correction unit 40 is constituted by, for example, an ASIC, and performs link control of wireless communication between the PHP slave unit 10 and the public base station 12, correction of a data transfer error, and the like. The error correction unit 40 is connected to the PHP slave device 10 by a control line and a data line of the connection cable 19a.

The error correction section 40 includes a CPU 40a, a controller (CONT) 40b, an SIO 40c, and an error correction circuit 40d. CPU 40a
Controls the error correction unit 40 under the control of the control unit 41. The controller 40b processes control information for the PHP slave 10 provided from the personal computer 16 or a command for the base station 12. SIO40c
Is connected to the control line of the PHP slave 10, and the processing result by the controller 40b, for example, the PHP slave 1
A remote command for executing the same operation as when the 0 dial button is pressed (10-key emulation) is transmitted to the PHP slave device 10. The error correction circuit 40d is for transmitting and receiving a result of processing by the controller 40b, for example, a command and data for data communication with the base station 12 via the PHP slave device 10.

The control section 41 controls the UART 42 and the error correction section 40 constituting the interface section 18 and performs a predetermined operation in accordance with data input via the UART 42 or data input from the error correction section 40. Perform the operation of

The control unit 41 includes a CPU 41a, a ROM 41
b, RAM 41c. The CPU 41a uses the RO
Based on the program stored in M41b, the entire interface unit 18 is controlled. The RAM 41c stores various data and the like, and stores, for example, an initial setting command to be set for a modem function for performing data communication.

The UART 42 is connected to the parallel bus of the personal computer 16 and inputs data from the personal computer 16. The UART 42 is for realizing communication via a telephone line, and has a function of transmitting and receiving data from the CPU (personal computer 16), a function of controlling a modem, and the like. UART4
Numeral 2 simulates the function of a data communication modem, and is controlled by the personal computer 16 in the same manner as when a data communication modem connected by wire is connected. That is, the personal computer 16 uses a communication command (in a conventional communication system) for controlling the data communication modem.

Next, the operation of this embodiment will be described.
First, the operation of the interface unit 18 will be described.
The communication command from the personal computer 16 input from the interface 43 is once input by the UART 42 (in which various registers are provided), thereby maintaining compatibility with communication software in the conventional communication system.

The CPU 41a of the control unit 41 has a ROM 41
b, the content of the communication command input to the UART 42 is determined, and the error correction unit 40
Of the communication command to the CPU 40a.

The CPU 40a discriminates the content of the transferred command, and if it is control information for the PHP slave 10, sends an instruction to the controller 40b and the SIO 40c so as to output the information to the control line.
Process commands from.

If the content of the command is a command to the base station 12, the controller 40b and the error correction circuit 40 output the command to the data line.
An instruction is issued to d to process a command from the personal computer 16.

For example, when the command sent from the personal computer 16 is the initial setting information for the modem function provided in the data communication unit 32 of the base station 12, the following operation is performed.

The initialization command output from the personal computer 16 passes through the UART 42 and the CPU 41 of the controller 41.
At a, it is determined whether or not the command is an initial command. Here, if it is determined that the command is an initialization command, the command is temporarily stored in the RAM 41c.

When the modem function in the data communication unit 32 of the base station 12 is activated and a command indicating that initial setting is possible is input from the interface 44B via the data line, the initial setting stored in the RAM 41c is stored. Outputs information via data lines.

Next, the command processing in the first embodiment will be described with reference to the flowchart shown in FIG. The control unit 41 of the interface unit 18 includes a UART
It is detected whether or not data has been received by the interface 42 through the interface 43 (step A1).

When data is input from the personal computer 16, the control unit 41 of the interface unit 18
It is determined whether the information is the initial setting information for the modem function provided in (1) (step A2). If the result of this determination is that the information is the initial setting information, the CPU 41a of the control unit 41 stores the initial setting information in the RAM 41c (step A).
3). Further, the CPU 41 a
O40c, via the control line of the interface 44a, requests the PHP slave 10 to establish a wireless link with the base station 12 (step A4).

When a wireless link between the PHP slave device 10 and the base station 12 is established, the interface unit 18
The initial setting information stored in the error correction unit 40
Is set in the data line output register in the error correction circuit 40d. Thereby, the CP of the error correction unit 40
U40a sends the contents of the data line output register to the data line via the interface 44b via PHP.
The data is output to the data communication unit 32 of the base station 12 via the slave 10 (step A5).

The data communication section 32 of the base station 12 performs the initial setting of the modem function based on the initial setting information from the interface section 18. When the initialization is completed, the data communication unit 32 notifies the interface unit 18 of the completion of the initialization.

Next, when a communication command is output from the personal computer 16 (steps A1, A2, A6), the control unit 41
CPU 41a interprets the contents of the communication command. As a communication command for controlling the modem function, an AT command (for example, ATDT0425 ...) is generally used. AT commands for executing automatic calling include a modem control command (ATDT portion) for a modem function, and a dial request command (destination telephone number) for realizing a telephone function for connecting a line with a communication partner. , Dial information indicating 0425 ...). CPU 41a
Separates the communication command into a modem control command and a dial request command, and stores them in the RAM 41c (step A8).

Here, the base station 12 (data communication unit 32)
Is notified of the completion of the initial setting (step A
9) The CPU 41a of the control unit 41 transmits the dial request command stored in the RAM 41c to the error correction unit 40.
Is set in the data line output register of the error correction circuit 40d (step A10).

The CPU 40a of the error correction unit 40 outputs the dial request command set in the data line output register to the data communication unit 32 of the base station 12 via the PHP slave device 10 (step A11).

The data communication section 32 of the base station 12 calls a communication partner in response to a dial request command from the interface section 18 to connect a line.

The CPU 41a of the interface unit 18
When a call / response is input from PHP handset 10, RA
The modem control command held in M41c is set in the data line output register of the error correction circuit 40d. Thereby, the CPU 40a of the error correction unit 40
Transmits the modem control command of the data line output register from the data line via the interface 44b.
The data communication unit 32 of the base station 12 via the PHP slave 10
(Step A14).

As a result, the modem function of the data communication unit 32 is shifted to the online mode, and is ready for data communication. If it is determined in step A6 that the received command is not a communication command, a process corresponding to the command is executed (step A15).

Next, the command processing in the second embodiment will be described with reference to the flowchart shown in FIG. In the second embodiment, a description will be given assuming that each unit is controlled at the timing shown in FIG.

The personal computer 16 transmits initial setting information for the modem function based on communication software for controlling a data communication modem connected by wire (FIG. 7).
(A)), when there is a notification indicating that it has been received (FIG. 7)
(B)), and sends a communication command (FIG. 7 (c)).

The control unit 41 of the interface unit 18
It is detected whether or not the data has been received by the ART 42 via the interface 43. If the data has been input from the personal computer 16, it is determined whether or not the data is the initial setting information for the modem function provided in the base station 12 (step B).
1).

If the result of this determination is that the information is the initial setting information, the CPU 41a of the control unit 41
It is stored in M41c (step B2, FIG. 7D). The UART 42 notifies the reception of the initial setting information from the personal computer 16 (step B3).

At this point, the interface unit 18 waits for the input of a communication command from the personal computer 16 (step B4). When the communication command is received by the UART 42, the CPU 41a of the control unit 41 interprets the contents of the communication command. As a communication command for controlling the modem function, an AT command is generally used. The AT command for executing automatic calling includes a modem control command for a modem function and a dial request command for realizing a telephone function for connecting a line with a communication partner (dial information indicating a telephone number of the partner). And are included. The CPU 41a separates the communication command into a modem control command and a dial request command, and stores them in the RAM 41c (steps B5 and B6).

The CPU 41a transmits the dial request command stored in the RAM 41c to the error correction section 40.
Is set in the data line output register of the error correction circuit 40d (step B7), and the
Is set in a control command output register of the SIO 40c.

The CPU 40a of the error correction unit 40 outputs the dial request command set in the data line output register and the control command set in the control command output register to the PHP slave device 10 (step B).
8, FIG. 7 (e)). The PHP slave 10 establishes a wireless link with the base station 12 in response to a control command from the interface unit 18 (FIG. 7 (f)). Then, the data communication unit 32 of the base station 12 sets the modem function to an off-hook state in response to the dial request command, calls a communication partner in response to the dial request command from the interface unit 18, and (FIG. 7 (g)).

The CPU 41a of the interface unit 18
When a call / response is input after the wireless link is established by the PHP slave 10 (step B9, FIG. 7 (h)),
The communication start request to the data communication unit 32 is sent to the PHP slave 1
0 (step B10, FIG. 7 (i)).

Further, PHP slave device 10 outputs a modem activation request (SACCH) to base station 12 in response to a communication start request from interface unit 18 (FIG. 7).
(J)). The data communication unit 32 of the base station 12 activates the modem function in response to the modem activation request, and thereafter outputs a start completion notification (SACCH) to the PHP slave 10 (FIG. 7).
(K)). The PHP slave device 10 outputs a preparation completion notification to the interface unit 18 in response to the activation completion notification (FIG. 7 (l)).

When the control unit 41 of the interface unit 18 receives the preparation completion notification (step B11), the RAM 41
The initial setting information stored in c is set in the data line output register in the error correction circuit 40d of the error correction unit 40. Thereby, the CPU of the error correction unit 40
40a outputs the contents of the data line output register to the data communication unit 32 of the base station 12 via the PHP slave unit 10 from the data line via the interface 44b (step B12, FIG. 7 (m)).

The data communication section 32 of the base station 12 performs the initial setting of the modem function based on the initial setting information from the interface section 18. When the initialization is completed, the data communication unit 32 notifies the interface unit 18 of the completion of the initialization (FIG. 7 (n)).

The CPU 41a of the interface unit 18
When the initial setting completion notification is input from the base station 12 via the PHP slave device 10 (step B13), the RAM 41c
Is set in the data line output register of the error correction circuit 40d (step B14). Thereby, the CP of the error correction unit 40
The U40a outputs the modem control command of the data line output register from the data line via the interface 44b to the data communication unit 32 of the base station 12 via the PHP slave device 10 (step B15, FIG. 7 (o)). ).

As a result, the modem function of the data communication unit 32 shifts to the online mode, notifies the personal computer 16 of the connection (FIG. 7 (p)), and enters a state where data communication is possible (FIG. 7 (q)). )).

In this way, without changing the communication software designed to control the wired data communication modem operating on the personal computer 16,
By controlling the modem function provided in the data communication unit 32 of the base station 12, the personal computer 16 can perform data communication via the PHP slave 10 (mobile station) and the base station 12.

That is, the interface section 18 stores initial setting information and communication commands output from the personal computer 16 for controlling the modem function. The communication commands are separately stored as a modem control command for controlling a modem function and a dial request command for controlling a line connection.

Therefore, information stored in accordance with the timing of control of establishing a wireless link between the PHP slave device 10 and the base station 12, control of connection to the line 14, and control of the modem function of the data communication unit 32. By outputting a command or a command, the information processing apparatus does not perform any special processing (regardless of whether the configuration is a configuration in which the modem function is connected by wire or a configuration in which the modem function is connected via a wireless communication path). No), data communication with the other party via the PHP slave device 10 (mobile station), the base station 12, and the public line 14 becomes possible.

[0078]

As described above, according to the present invention, there is no need to change communication software designed to control a data communication modem connected by wire without changing the communication software designed to control the data communication modem. It is possible to execute data communication using the modem function.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a mobile communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of the PHP slave device 10 according to the present embodiment.

FIG. 3 is a block diagram showing a configuration of a public base station 12 in the embodiment.

FIG. 4 is a block diagram showing a configuration of an interface unit 18 in the embodiment.

FIG. 5 is a flowchart for explaining a command processing procedure in the first embodiment.

FIG. 6 is a flowchart for explaining a command processing procedure in the second embodiment.

FIG. 7 is a diagram for explaining control timing of each unit in the second embodiment.

[Explanation of symbols]

10: PHP slave unit (mobile station), 12: base station, 14: public line, 16: personal computer (information processing device), 18: interface unit, 19a, 19b: connection cable, 20: microcomputer, 21, 30 ... Radio unit, 22
... Codec, 23 ... ADPCM part, 24, 34 ... P
CM section, 25 button input section, 26 speaker, 27 ...
Microphone, 28 connector section, 31, 40 error correction section, 33 PCM section, 40 error correction section, 41 control section, 41a CPU, 41b ROM, 41c RA
M, 42... UART, 43, 44a, 44b.

Continuation of front page (56) References JP-A-5-327929 (JP, A) JP-A-5-219261 (JP, A) JP-A-5-110718 (JP, A) JP-A-2-254827 (JP) , A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04B ⁷ /24-7/26 H04L 13/02-13/18 H04L 29/00-29/12 H04M 11/00-11 / 10 H04Q 7/00-7/38

Claims (5)

(57) [Claims] An information processing apparatus for outputting a communication command for operating a modem function for executing data communication via a public line, the communication command being output from the information processing apparatus. Interface means for inputting and holding, and outputting data in accordance with the communication command at a predetermined timing; and an interface connected to the information processing apparatus via the interface means for performing a process in accordance with the data output from the interface means. A mobile station to be executed, connected to the mobile station via a wireless transmission line and connected to the public line, and having a modem function for performing data communication via the public line; Operates the modem function according to the content of the data output at a predetermined timing from the mobile station via the mobile station. Mobile communication system, characterized in that to enable data communication by the information processing apparatus and the base station, comprises a, over a wireless communication path between the base station and the mobile station to. 2. The interface means interprets a communication command output from the information processing apparatus, holds data for each content included in the communication command obtained by the interpretation, and holds the data at a predetermined timing. The mobile communication system according to claim 1, wherein the mobile communication system outputs the signal to a mobile station or the base station. 3. The mobile communication according to claim 2, wherein said interface means outputs the held content at a timing corresponding to a notification indicating a processing status in said base station via said mobile station. system. 4. Data communication is performed via a public line.
Outputs control data for operating the base station modem function.
Information processing device and the base station via a wireless transmission path.
Interface connected to each mobile station connected
In the communication control method in the communication device, the control data output from the information processing device is
If it is the initial setting information for the modem function,
Save the initial setting information, between the mobile station and the base station
After the wireless link is established, the initialization information
Output to a mobile station, wherein the control data from the information processing device is
Connection between the modem control command for controlling the
If it is a dial request command to control connection
Respectively, and the modems of the base station are stored based on the initial setting information.
After the function is initialized, the dial request command
Output to the mobile station, and through the public line by the dial request command.
After being connected to the other
Output to the mobile station and the modem of the base station based on the modem control command.
After the dem function has been activated, the dem
Communication control which is characterized in that a possible state Data Communications
Method. 5. A data communication is executed via a public line.
Outputs control data for operating the base station modem function.
Information processing device and the base station via a wireless transmission path.
Interface connected to each mobile station connected
In the communication control method in the communication device, the control data output from the information processing device is
If it is the initial setting information for the modem function,
And the control data from the information processing device is stored in the modem device.
Connection between the modem control command for controlling the
If it is a dial request command to control connection
Respectively, and outputs the dial request command to the mobile station to establish a radio link between the mobile station and the base station.
Via the public line by the dial request command
Transfer the initial setting information to the destination
Output to a mobile station and the modem of the base station based on the initial setting information.
Before the modem control command is
To the mobile station, and based on the modem control command, the modem of the base station.
After the dem function has been activated, the dem
Communication control which is characterized in that a possible state Data Communications
Method.