JPH07203068A - Mobile communication system and communication control method - Google Patents

Abstract

(57) [Abstract] [Object] The present invention provides a modem in a base station that is not physically connected without changing communication software designed to control a wired data communication modem. Allows input and output of information to control functions. [Structure] A personal computer 1 for sending a command indicating reading / writing of data for controlling a modem function
6, an interface unit 18 for inputting and holding information for modem control including data for controlling the modem function sent from the personal computer 16, and executing processing for the data in response to a command; The mobile station 10 and the mobile station 1 connected via the unit 18.
0 via the wireless transmission line and the public line 14
And a base station 12 which has a modem function for holding information for modem control including data for controlling the modem function and which executes a process for the data in response to a command from the personal computer 16.

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 mobile communication using a mobile phone using wireless communication, for example, a personal handy phone (PHP), and a communication control method used in the system. Regarding

[0002]

2. Description of the Related Art Mobile telephones that utilize radio waves include car phones and cell phones called cellular phones. Cellular phones provide services nationwide, and can make (call) and receive (receive) calls over a wide area in major cities. Further, in the cellular phone, it is also possible to transmit data by communication (personal computer communication) using a personal computer (hereinafter, abbreviated as personal computer) or execute FAX communication.

In recent years, instead of the conventional analog signal communication, a digital cellular phone service has been started in which digital signal communication is performed. The cellular phone has a large-scale communication system built in order to enable communication over a wide range.

Further, as a simple mobile telephone unlike a cellular phone, there is a cordless telephone which is widely used for home use. The cordless telephone communicates between a cordless base unit (base station) and a cordless handset (mobile station) connected to a public line based on a protocol unique to the cordless telephone. The cordless telephone communicates with an analog signal, and the content of communication by the cordless cordless handset is only voice communication.

Normally, personal computer communication is performed by connecting RS-232C provided in the personal computer and a data communication modem, and connecting the data communication modem and a public line. Therefore, the communication software operating on the personal computer for executing the personal computer communication is designed to directly control the data communication modem connected by wire to execute the connection operation with the public line.

Further, since the cordless telephone is originally configured for voice communication, it cannot perform data communication through the cordless cordless handset, and the communication software does not support it.

By the way, 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).
Communication system is planned.

Unlike cellular phones, PHP is not a large-scale communication system, and a small-output PHP slave (mobile station) is used not only at home but also as a public base station for stations, shopping areas, public telephone boxes, etc. By providing it, it can be used outdoors.

Since the PHP performs communication using digital signals, it becomes possible to perform data communication services that cannot be realized by a cordless telephone using analog signals, such as personal computer communication and FAX communication from outside. Further, in realizing this service, in order to improve portability, a configuration is considered in which a public base station side is provided with a modem function corresponding to a data communication modem.

That is, even when the personal computer communication or the FAX communication is performed outdoors, each user does not need to carry a data communication modem and only needs to carry a personal computer or a facsimile device.

[0011]

[Problems to be Solved by the Invention] However, PHP
The mobile communication system using the slave has the following problems. Since the modem function is provided in the public base station, when performing personal computer communication, for example, communication software for controlling the conventional data communication modem connected by wire cannot be used as it is.

That is, there is a problem that it becomes impossible to output a control command for controlling the modem and perform read / write control for a register for setting various data in the modem.

The present invention has been made in view of the above circumstances, and physically connects without changing communication software designed to control a wired data communication modem. An object of the present invention is to provide a mobile communication system and a communication control method capable of inputting / outputting information for controlling a modem function in a base station which is not operated.

[0014]

SUMMARY OF THE INVENTION The present invention is for performing data communication with a destination via a line, and shows a read or write request for data for controlling a modem function for data communication. An information processing apparatus that sends a command and information for modem control including data for controlling the modem function, which is sent from the information processing apparatus, is input and held, and a process for the data is performed according to the command. Interface means to execute,
A mobile station connected to the information processing apparatus via the interface means, a mobile station connected to the mobile station via a wireless transmission path, connected to the line, and performing data communication via the line. It has a modem function,
A base station which holds information for modem control including data for controlling the modem function, and which executes processing on the data in response to the command from the information processing device via the mobile station. Data for controlling the modem function held in the interface means and the base station is processed by a command from the information processing device.

A UART (Universal Asynchronous Recever T) is provided in the interface means and the base station.
ranceiver) function. Further, the interface means has a determining means for determining whether the command from the information processing device can be processed in the interface means or needs to be processed in the base station. It is characterized in that the processing for the data for controlling the modem function is executed according to the discrimination result of the discrimination means.

Further, the present invention executes data communication with a destination via a line, and sends a command indicating a read or write request for data for controlling a modem function for data communication. Through the information processing device, interface means for inputting and holding information for modem control including data for controlling the modem function transmitted from the information processing device, and the information processing device and the interface means With the connected mobile station,
It is connected to the mobile station via a wireless transmission line and is also connected to the line, has a modem function for performing data communication via the line, and includes data for controlling the modem function. A communication control method in a mobile communication system having a base station that holds information for modem control, wherein the interface means, when a command indicating reading is transmitted from the information processing device,
If it is possible to perform processing in the interface means or to perform processing in the base station, and if it is necessary to perform processing in the base station, the interface means is configured to operate via the mobile station. Instructing the base station of a request according to a command, the base station executes processing in response to the request from the interface means, notifies the processing result to the interface means, and the interface means receives the processing from the base station. When the processing result is output to the information processing device and a command indicating writing is sent from the information processing device, the interface means writes the information for controlling the modem in accordance with the command, and In the base station, it is determined whether processing can be performed in the interface means or processing needs to be performed in the base station. When it is necessary to perform processing, the interface means instructs the base station via the mobile station to request in response to the command, and the base station executes processing in response to the request from the interface means. ,
The processing result is notified to the interface means, the interface means outputs the processing result from the base station to the information processing device, and controls the data communication by processing the data for controlling the modem function. And

[0017]

According to this structure, a modem function for line control is provided in the base station, and the interface means is provided to maintain compatibility with the control of the wired data communication modem in the information processing apparatus. A modem function is provided. Data for various controls is held to control the modem function, but by the command from the information processing device,
Processing (reading and writing) on these data can be performed.

At this time, it is determined whether processing should be performed on the base station side or on the interface means side, and the necessary processing is executed on the basis of the result. Therefore, the data held in both can be unified.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 this embodiment. As shown in FIG. 1, in the mobile communication system of the present embodiment, a wireless communication function is executed between a PHP handset 10 and a public base station 12 (hereinafter, base station) installed outdoors, for example. . The base station 12 is installed in a public telephone box or the like.

When the base station 12 is connected to the public line 14 and a call is made from the PHP handset 10, the base station 12,
It is possible to talk with the other party through the public line 14.
Data communication by a personal computer (hereinafter abbreviated as a personal computer) 16 and a facsimile machine (hereinafter abbreviated as FAX) 17 via the PHP slave unit 10.
FAX communication is possible. In addition, data communication,
It may be another information processing device such as a word processor device. In this embodiment, the public line 14 is connected to the ISDN.
(Integrated Services Digital Network) and other digital lines.

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

FIG. 2 is a block diagram showing the construction of the PHP slave unit 10. As shown in FIG. 2, the PHP slave device 10 includes a microcomputer 20, a wireless unit 21, a codec 22, and an ADPC.
M section 23, PCM section 24, button input section 25, speaker 26, microphone 27, connector section 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 receives a command input from the connector section 28 via a control line or a button input section 25 by pressing a dial button.
The operation control of the telephone function according to the data input from the control unit 22 and the control of the codec 22 and the ADPCM unit 23 (switching voice communication and data communication by turning on / off) are performed. The operation of the dial button can be emulated by externally giving a predetermined command to the microcomputer 20 via the connector section 28 and the control line.

The radio unit 21 is connected to the antenna 29 and the codec 22, and transmits / receives data to / from the radio unit 30 provided in the base station 12 via the antenna 29 according to a predetermined protocol. Wireless unit 2
1 inputs and outputs data to and from the base station 12 to and from the codec 22.

The codec 22 includes a radio unit 21 and an ADP.
When connected to the CM section 23 and the connector section 28 and performing a voice call, under the control of the microcomputer 20, the data output from the ADPCM section 24 to be transmitted to the base station 12 is transmitted as a radio signal ( The analog signal) is converted into a digital signal, and the radio signal from the base station 12 received via the radio unit 21 is converted into a digital signal. Data communication / FAX
When communication is performed, 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
Differential Pulse Code Modulation: Highly efficient compression is performed by 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 the PCM (Pulse Co
de Modulation: Performs pulse code modulation. When making a voice call, the PCM unit 24 is transmitted from the base station 12 to receive the radio unit 21, the codec 22, and the ADPCM unit 23.
The digital audio signal to be output from the speaker 26 obtained via the converter is converted into an analog audio signal, and the analog audio signal input from the microphone 27 is converted into a digital audio signal and output to the ADPCM unit 23.

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

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

The connector section 28 is connected to the personal computer 16 or FA via the connection cables 19a and 19b to the PHP slave unit 10.
This is an interface for connecting the X17. The data line connected to the connector unit 28 is a codec 22.
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 shows the base station 12
3 is a block diagram showing the configuration of FIG. As shown in FIG. 3, the base station 12 includes a radio unit 30, an error correction unit 31, and a UART.
32, a modem 33, a PCM 34, and an antenna 35. It should be noted that FIG. 3 shows only a path for data communication. In addition to this, as a basic function of the base station 12, a voice communication path for performing voice communication is provided.

The radio unit 30 is connected to the antenna 35, and the PHP slave unit (base station) 10 is connected via the antenna 35.
Data is transmitted and received between and by a predetermined protocol. The wireless unit 30 sends the data transmitted / received to / from the PHP slave device 10 to the voice communication path during voice communication, and to the data communication path (error correction unit 31) during data communication.

The error correction unit 31 is, for example, an ASIC (Ap
replication specific IC) and performs link control of wireless communication between the PHP slave 10 and the public base station 12 and correction of data transfer errors.

UART (Universal Asynchronous Recev)
er Tranceiver) 32 is connected to the error correction unit 31 and the modem 33. The UART 32 is for realizing communication through a telephone line and has a function of holding data for modem control obtained via the error correction unit 31 and controlling the modem 33 based on these data. There is.

The modem 33 includes a UART 32 and a PCM 3
4 and is controlled by UART 32,
The transmission data from the RT 32 is modulated, and the reception data from the PCM 34 is demodulated.

The PCM 34 includes a modem 33 and a public line 14.
And is connected to the other party (for example, a host device in the case of data communication) via the public line 14 at the time of data communication. The PCM unit 33 performs PCM encoding / decoding processing for inputting / outputting data to / from the public line 14, which is a digital communication network such as ISDN. The digital signal from the public line 14 is converted into an analog signal. Converted,
In addition, the analog signal output from the modem 33 to be transmitted to the communication partner is converted into a digital signal to convert the public line 14
Send to.

The antenna 35 is for transmitting and receiving signals to and from the PHP slave unit 10. FIG. 4 is a block diagram showing the configuration of the interface unit 18. As shown in FIG. 4, the interface unit 18 includes an error correction unit 4
0, CPU 41, and UART 42.

The interface 18 is, for example, the personal computer 1.
6 can be configured as an IC card type that can be connected to the card interface (IC card slot) provided in FIG. The card interface is, for example, JEIDA
(Japan Electronic Industry Development Association
) / PCMCIA (Personal Computer Memory CardIn
ternational Association) is used.

The error correction unit 40 is composed of, for example, an ASIC, and corrects a data transfer error between the PHP slave unit 10 and the public base station 12. The error correction unit 40 is connected to the PHP slave 10 by a control line and a data line of the connection cable 19a. The control line can transmit to the PHP slave device 10 a command for performing the same operation as when the dial button of the PHP slave device 10 is pressed (10-key emulation). The data line is the PHP slave unit 10.
It is for transmitting and receiving data for data communication via.

The CPU 41 controls the UART 42 and the error correction unit 40 constituting the interface unit 18 based on a program isolated in a memory (not shown). Data input via the UART 42 or error A predetermined operation is executed according to the data input from the correction unit 40.

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 by a telephone line, and inputs and holds parallel data for controlling a modem function from the CPU (personal computer 16) in the same manner as a wired data communication modem. can do. Further, under the control of the CPU 41, it has a modem interface (transmits / receives data and control signals necessary for control) that outputs data for controlling the modem function as needed.

Next, the operation of this embodiment will be described with reference to FIG. FIG. 5 is for explaining the procedure of register read processing and register write processing for the modem. First, using FIG. 5 (A),
A case will be described in which a register that stores data for controlling the modem 33 in the base station 12 is read.

First, the personal computer 16 outputs to the modem function a command request indicating reading of a register for holding data used for realizing the modem function (FIG. 5 (a)).

The interface section 18 detects the input of a command from the personal computer 16 (FIG. 5 (b)). Then, whether the input command needs to be processed by the UART 32 in the base station 12 or the UAR in the interface 18
It is determined whether the command can be processed in T42 (Fig. 5).
(C).

As a result of the determination, the UART 32 in the base station 12
When it is necessary to process the
Error correction unit 4 to send the command input to
A command is set in the output register provided in 0 (FIG. 5 (d)).

When the command is set in the output register, the CPU 41 outputs a register read request to the base station 12 (FIG. 5 (e)). The command set in the output register is sent to the PHP slave device 10 via the data line and is transmitted to the base station 12 via the wireless communication path between the PHP slave device 10 and the base station 12.

Upon receiving the command indicating the register read request, the base station 12 refers to the register of the UART 32 in the base station 12 (FIG. 5 (f)). The base station 12 sets the contents of the referenced register in the output register of the error correction unit 31 and outputs it to the interface unit 18 (FIG. 5 (g)).

The interface section 18 refers to the contents of the register of the UART 32 from the base station 12 and refers to the UART.
If the contents of the register 42 are different, the contents of the register are updated (FIG. 5 (h)), and the contents of the register are output to the personal computer 16 (FIG. 5 (i)).

On the other hand, as a result of the determination in FIG. 5C, if the processing of the UART 42 in the interface unit 18 is sufficient, the register of the UART 42 is referred to (see FIG. 5).
(J)), the contents of the register are output to the personal computer 16 (FIG. 5 (k)).

Next, the case of writing data for controlling the modem 33 in the base station 12 will be described with reference to FIG. First, the personal computer 16 outputs, to the modem function, a command request indicating setting / modifying (writing) of a register for holding data used for realizing the modem function (FIG. 6).
(M)).

The interface section 18 detects the input of a command from the personal computer 16 (FIG. 6 (n)). The interface 18 receives the command input and receives the UART4.
The contents of register 2 are changed (FIG. 6 (o)). Then, whether the input command needs to be processed by the UART 32 in the base station 12 or the UAR in the interface 18
It is determined whether the command can be processed in T42 (Fig. 6).
(P).

As a result of the discrimination, the UART 32 in the base station 12
If it is necessary to process the error correction unit 40 in order to transmit the contents of the register to the base station 12,
A command is set in the output register provided in (FIG. 6 (q)).

When the output value is set in the output register, the CPU 41 outputs a register write request to the base station 12 (FIG. 6 (r)). The output value set in the output register is sent to the PHP slave device 10 via the data line, and is transmitted to the base station 12 via the wireless communication path between the PHP slave device 10 and the base station 12.

The base station 12 receives the command indicating the register write request and updates the register of the UART 32 in the base station 12 (FIG. 6 (s)). The base station 12 is a UAR
The computer 16 is notified that the updating of the register value of T32 is completed (FIG. 6 (t)).

On the other hand, as a result of the determination in FIG. 6 (p), if the processing of the UART 42 in the interface unit 18 is acceptable, a change completion notice is output to the personal computer 16 (FIG. 6 (u)).

In this way, the data held in the UART 42 having the modem function provided in the interface section 18 can be processed by the command from the personal computer 16, and the modem provided in the base station 12 can be processed. Similarly, each data for line control (modem function control) held in the UART 32 for controlling 33 can be processed without any difference from the information on the interface unit 18 side.

In the above embodiment, the mobile communication system using the PHP slave unit 12 as a mobile station has been described as an example. However, a cordless telephone which performs analog signal communication and is widely used at home. The same data communication control can be performed between the child device and the parent device.

In the above embodiment, the public line 14 is the IS.
Although it has been described as the DN, it may be a line for analog communication. In that case, the PCM unit 34 of the base station 12 becomes unnecessary.

[0059]

As described above, according to the present invention, in a base station that is not physically connected, without changing communication software designed to control a wired data communication modem. It is possible to input and output information for controlling the modem function of.

[Brief description of 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 showing the configuration of a PHP slave device 10 according to the present invention.

FIG. 3 is a block diagram showing a configuration of a public base station 12 according to the present invention.

FIG. 4 is a block diagram showing a configuration of an interface section 18 according to the present invention.

FIG. 5 is a diagram for explaining a register read / write procedure according to the present 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 section, 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, 32, 42 ... UART, 33 ... Modem, 41 ... CP
U.

Claims (4)

[Claims] 1. An information processing apparatus for executing data communication with a partner via a line, and transmitting a command indicating a request for reading or writing data for controlling a modem function for data communication. Interface means for inputting and holding information for modem control including data for controlling the modem function sent from the information processing device, and for executing processing for the data according to the command, A mobile station connected to the processor via the interface unit, a modem function for connecting to the mobile station via a wireless transmission path and to the line, and performing data communication via the line. And holding information for modem control including data for controlling the modem function, A base station that executes processing on the data in response to the command via the mobile station, and controls the interface means and the modem function held in the base station by a command from the information processing device. A mobile communication system, characterized by processing data for communication. 2. A UART (Universal Asynchronous Recever Tranc) is provided in the interface means and the base station.
The mobile communication system according to claim 1, wherein the mobile communication system has an eiver) function. 3. The interface means has a determination means for determining whether a command from the information processing device can be processed in the interface means or needs to be processed in the base station. The mobile communication system according to claim 1, wherein processing is performed on the data for controlling the modem function according to the determination result of the determining means. 4. An information processing apparatus for executing data communication with a partner via a line, and transmitting a command indicating a request for reading or writing data for controlling a modem function for data communication. And interface means for inputting and holding information for modem control including data for controlling the modem function sent from the information processing apparatus, and connected via the information processing apparatus and the interface means A mobile station, which is connected to the mobile station via a wireless transmission path and is also connected to the line, has a modem function for performing data communication via the line, and controls the modem function. And a base station that holds information for modem control including data of the above, and a communication control method in a mobile communication system comprising: When a command indicating reading is sent from the interface unit, the interface unit determines whether processing is possible in the interface unit or whether processing needs to be performed in the base station, and the process is performed in the base station. When necessary, the interface means instructs the base station via the mobile station to make a request in accordance with a command, and the base station executes processing in accordance with the request from the interface means, Notifying the result to the interface unit, the interface unit outputs the processing result from the base station to the information processing apparatus, and when a command indicating writing is sent from the information processing apparatus, the interface unit is The information for controlling the modem is written in accordance with the command and processed in the interface means. If it is possible or not, it is determined whether the processing needs to be performed in the base station, and when the processing needs to be performed in the base station, the interface unit sends a command to the base station via the mobile station. The base station executes a process according to the request from the interface unit, notifies the interface unit of the processing result, and the interface unit processes the processing result from the base station with the information processing. A communication control method, wherein data communication is controlled by processing the data output to a device and controlling a modem function.