JPH11239383A - Radio communications system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a user to recognize the end of data reception even when the user leaves a radio terminal station during data communication in the radio communications system consisting of a control station that controls the entire system and contains at least one public line and at least one radio terminal station radio-controlled by the control station. SOLUTION: In the case that a kind of an incoming call from a public network is detected and the detection indicates the kind of the incoming call to be radio data communication, data communication with a radio terminal station 107 is conducted. When the end of the radio data communication is detected, a display device is used to inform of the end of the radio data communication. The presence of the end notice when the radio data communication is finished is controlled by a control station 103, the radio terminal station 107, a radio telephone set 104 or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system using wireless communication.

[0002]

2. Description of the Related Art Conventionally, a terminal accommodating ISDN sets voice or data communication at the time of call setup, and distinguishes between voice-based incoming calls and data-based incoming calls based on the type of the communication.

[0003] With the progress of digital wireless technology,
A system in which an ISDN is accommodated and an extension terminal is accommodated using digital radio has been considered. Among them, PHS (Personal Handy-phone), which is expected to become the mainstream in wireless transmission systems in the future, is particularly considered.
PI that prescribes data transmission using System)
AFS (PHS Internet Access F
orum Standard).

[0004] This transmission system uses PHS 32K / bps.
Provides a transmission control procedure (layer 2) for transmitting data with high quality using the unrestricted digital bearer of ISD
By combining with N, data can be transmitted and received in a digitally integrated manner.

[0005]

However, the conventional control station and wireless terminal station do not always exist in the same room, and are often separated in separate rooms. For this reason, it takes time to receive a large amount of data, so if you leave the wireless terminal station and move to another room by the end of data reception, you need to know that you have not returned to the end of data reception unless you return Could not.

Accordingly, an object of the present invention is to provide a wireless communication system that allows a user to know that data reception has ended even if the user is away from a wireless terminal station during data communication.

[0007]

SUMMARY OF THE INVENTION The present invention provides a control station for controlling the entire system and accommodating at least one public line, and at least one wireless terminal station when controlled wirelessly by the control station. In the wireless communication system, the control station includes an incoming call detecting unit that detects a type of incoming call from the public network, a communication unit that performs wireless communication with the wireless terminal station, and an end detecting unit that detects the end of the wireless communication. Display means for displaying a communication state, and when the incoming call detection means detects that the incoming call type is wireless data communication, the communication means performs data communication with a wireless terminal station, and the end detection means When detecting that the wireless data communication has been completed, the wireless communication device has an end notifying unit for notifying that the wireless data communication has been completed using the display unit. And butterflies.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (System Configuration) FIG. 1 is a block diagram showing a system configuration of a wireless communication system according to the present embodiment. Hereinafter, individual terminals constituting the present system will be described in detail.

This radio communication system accommodates a partner terminal 101 for transmitting and receiving data and a public line 102, and provides a control station 1 for providing a public network communication service to a terminal station in the system.
03 and the control station 103, wirelessly exchanging control data or voice data, performing a voice call via the public line 102, and a so-called extension telephone call between a plurality of terminal stations. , A wireless adapter 105 that performs control data communication and data communication with the control station 103, and is connected to the wireless adapter 105,
It comprises a data terminal or peripheral device 106 for receiving data from the wireless adapter 105.

In the present embodiment, the wireless adapter 105 and the data terminal or the peripheral device 106 together constitute a wireless terminal station 107. Further, the data terminal and the peripheral device 106 refer to a terminal device (data terminal) having a function of transmitting and receiving data in a burst manner or a device to which a wireless adapter 105 for performing wireless communication with a data input / output device can be connected. For example, in addition to a computer, a multimedia terminal, a printer, a facsimile, a copier, and a LAN gateway, devices such as an electronic camera, a video camera, and a scanner are applicable.

Hereinafter, a detailed configuration and operation of each section will be described. (1) Control Station FIG. 2 is a block diagram showing the internal configuration of the network control terminal 103.

The main control unit 201 controls the overall control of the network control terminal 103, has a timer clock unit, manages communication, and manages each terminal station. R
The OM 202 stores a control program, and the RAM 203 serves as a work area for control, such as storing terminal type information and communication status in the processing of the main control unit 201.

The digital line interface unit 204 includes:
DSU for receiving data from PSTN 102
(Data service unit) and a serial signal such as an AMI signal, and a data part in the frame is taken out.
Data is output as a PCM signal to a digital switch unit 205 described later at a predetermined timing, and the PCM signal from the digital switch unit 205 is formed into a predetermined frame and output to the digital public line 102 as data.

A digital switch unit 205 switches between a PCM signal between a wireless communication processing unit 206 to be described later and a serial signal between a serial communication control unit 212 to be described later, and transmits a predetermined serial signal to B1 or B1 via a digital line I / F. It enables transmission and reception of serial data using the B2 channel.

The wireless communication processing unit 206 performs processing such as scrambling on the ADPCM-coded information, time-division multiplexes the information into predetermined frames, and performs switching of transmission / reception of the RF unit 211 and frequency switching, which will be described later. It also has functions to control and perform intermittent reception processing, carrier detection, level detection, and bit synchronization. In the wireless communication processing unit 206, data assembled into a wireless frame and modulated by a modem is transmitted to a control station or a target wireless terminal via an RF unit. The details of the wireless communication processing unit 206 will be described with reference to FIG.

The RF unit 207 converts the modulated transmission data from the wireless communication processing unit 206 into information that can be transmitted wirelessly and sends it to the antenna, and extracts the modulated data from the information wirelessly received from the antenna. , And outputs the data to the wireless communication processing unit 206.

The analog switch unit 208 includes the main control unit 2
01, a signal from the modem unit 208, a sound source unit 209, a handset 210, and a speaker 2 described later.
Radio communication processing unit 20 for input / output signals such as analog signals such as 11
6 is switched between input and output.

The sound source unit 209 is a sound source for outputting a hold sound. The handset 210 inputs and outputs voice. The speaker 211 outputs a ringtone and stored voice data. The serial communication control unit 212
It controls serial communication such as DLC. Key input unit 21
Reference numeral 3 denotes a dial key for inputting a dial number and the like, and function keys such as an outside line key, a hold key, and a speaker key. The display unit 214 displays a time, a display during communication, a display of an error, and the like.

A bus 215 is an address and data bus, and is used by the main control unit 201 for setting each unit. (2) Wireless Telephone FIG. 3 is a block diagram showing an internal configuration of the wireless telephone 104.

The main control unit 301 controls the entire wireless telephone 104, and the ROM 302 stores the main control unit 3.
01 is a ROM in which a control program No. 01 is stored, and an EEPROM which stores a call code (system ID) of the wireless communication system and a sub-ID of the wireless telephone.

The RAM 303 is a work area for control in the processing of the main control unit 301. Key input unit 304
Is composed of dial keys for inputting dial numbers and the like, and function keys such as an outside line key, a hold key, and a speaker key.

A display unit 305 displays an incoming call, a dialed number input from the key input unit 304, a usage status of a public line, and the like. The wireless communication processing unit 306 performs processes such as frequency switching, intermittent reception, carrier detection, level detection, bit synchronization, and scrambling of ADPCM encoded information, time-division multiplexing into a predetermined frame, and RF Transmission and reception of the unit 307, frequency switching,
It has functions to perform intermittent reception, carrier detection, level detection, and bit synchronization.

The data assembled by the wireless communication processing unit 306 into a wireless frame described later is transmitted to the control station 103 and the target terminal station via the RF unit 307. It also has an ADPCM codec unit inside, and converts input / output blocks of the microphone 308 and the speaker 309 and analog audio information into ADPCM codes.
The DPCM encoded information is converted into analog audio information.

The RF unit 307 converts the modulated signal from the wireless communication processing unit 306 into a format that can be wirelessly transmitted and sends it to the antenna, extracts the modulated signal from the signal wirelessly received from the antenna, and sends the modulated signal to the wireless communication processing unit 306. Output.

The microphone 308 inputs a speech signal. In addition, the speaker 309 emits a loudspeaker output of a voice signal and a ringtone. The bus 310 is an address and data bus, and is used by the main control unit 301 for setting each unit. (3) Wireless Adapter FIG. 4 is a block diagram showing an internal configuration of a wireless adapter connected to or incorporated in the wireless data terminal device 105.

The main control unit 401 includes a CPU, peripheral devices for performing interrupt control, DMA control, etc., an oscillator for a system clock, and the like, and controls each block in the wireless adapter. The ROM 402 stores the main control unit 4
01 is a ROM in which a control program No. 01 is stored, and an EEPROM which stores a call code (system ID) of the wireless communication system and a sub-ID of the wireless telephone.

The RAM 403 is a work area for control in the processing of the main control unit 401. Key input unit 404
Is composed of dial keys for inputting dial numbers and the like, and function keys such as an outside line key, a hold key, and a speaker key.

A display unit 405 displays an incoming call, a dialed number input from the key input unit 404, the use status of a public line, and the like. The wireless communication processing unit 406 performs not only assembly and disassembly of a wireless frame, but also simple error detection processing represented by CRC, scrambling processing, switching between transmission and reception of the RF unit 407, It has a function of controlling frequency switching and the like, and performs carrier detection, level detection, and bit synchronization.

Also, during data communication, it has an input / output unit for communicating at 32 Kbps, and inputs and outputs data to and from a data processing unit described later. Further, an ADPCM codec unit is provided inside, and a microphone 408 and a speaker 409 described later are provided.
And the analog audio information is converted into ADPCM code, and the ADPCM encoded information is converted into analog audio information. The details of the wireless communication processing unit 406 will be described with reference to FIG.

The RF unit 407 converts the modulated signal from the wireless communication processing unit 406 into a format that can be wirelessly transmitted and sends it to the antenna. The RF unit 407 extracts the modulated signal from the signal wirelessly received from the antenna and sends the modulated signal to the wireless communication processing unit 406. Output.

The microphone 408 inputs a speech signal. The speaker 409 emits a loudspeaker output of an audio signal, a ringtone, a signal indicating that the operation is in progress, and the like. The data processing unit 410 configures and decomposes frames conforming to standards such as PIAFS, and has a communication protocol.

The communication interface unit 411 is provided with the above-mentioned 1
A wireless adapter 105 provided with a data terminal or a peripheral device such as RS232C, Centronics, LAN, etc., or a personal computer or a workstation internal bus, such as an ISA bus or PCMCIA interface. Controls communication.

A bus 412 is an address and data bus, and is used by the main control unit 401 for setting each unit. The data terminal / peripheral device 106 is a data terminal represented by a computer or a peripheral device represented by a printer or a facsimile. (Description of Configuration and Operation of Wireless Communication Processing Unit) FIGS. 5 and 6
FIG. 3 is a block diagram illustrating an internal configuration of a wireless communication processing unit.

FIG. 5 shows a radio communication processing unit 206 incorporated in the control station 103 shown in FIG. 2 and an outline of its operation.

The wireless communication processing unit 206 is composed of the following units. First, the modulator 501 modulates data that is assembled and input into a frame and outputs the data to the RF unit 207. Demodulation section 502 demodulates the modulated data output from RF section 207 and converts it into a digital signal.

The frame assembling unit 503 configures data set in various buffers to be described later into a predetermined frame determined by the RCR-28 standard. The frame decomposing unit 504 decomposes digital data having a frame configuration output from the demodulation unit 502 and extracts data.

The A / D converter 505 outputs the R
It receives the SSI signal and performs analog / digital conversion.
The level detector 506 compares the digital signal from the A / D converter 505 with a predetermined level. The synth control unit 507 outputs data for setting a PLL included in the RF unit 207.

The main control unit I / F unit 508 includes the main control unit 20
The bus 215 connected to the bus 1 is accommodated, and the control data is written and read. The transmission buffer 509 is a buffer for temporarily storing data to be transmitted every 5 ms when transmitting data.
Reference numeral 10 denotes a buffer for temporarily storing data decomposed by the frame decomposing unit 504.

The ADPCMI / F 511 is an ADPCMI / F 511 which will be described later.
The audio data compressed to 32 Kbps by the PCM codec 513 is temporarily stored in order to form the audio data into a predetermined frame.
The audio data for 5 ms decomposed in step 4 is temporarily stored. The sound source unit 512 includes a PB signal, BT, DT
Digitally stores such signals and ringtones,
The ADPCM codec 513 converts the input analog signal into a digital signal of 32 Kbps,
The received digital signal is D / A converted and output as an analog signal. The data selector 514 is ADPCM
ADP for ADPCM data input / output signal to I / F511
Whether to input / output from the CM codec 513, PCMI
/ F516 input / output or 32Kbps A
A data output destination for selecting whether to input / output data to / from the data input / output unit 518 as DPCM data is selected.

The analog I / F 515 controls the level of an analog input / output signal between the ADPCM codec 513 and the analog switch unit 208. PCMI /
An F516 inputs and outputs a PCM signal between the digital switch unit 205 and the data selector with a data transmission amount of 64 Kbps. A burst data I / F 517 temporarily stores the burst data signal decomposed by the frame decomposing unit 504. Then, while outputting the data as a 32 Kbps serial signal to the data input / output unit 518, the data output unit 51
8 to temporarily store digital data input at 32 Kbps for a predetermined frame.

The data input / output unit 518 performs a process of switching data input / output at 32 Kbps using ADPCM data and burst data.

Referring now to FIG. 6, a wireless communication processing unit incorporated in the wireless adapter 105 of FIG. 4 and an outline of its operation will be described. In FIG. 6, the same components as those in FIG.

The wireless communication processing unit 406 mainly includes the modulation unit 50
Reference numeral 1 modulates data that is assembled and input into a frame and outputs the data to the RF unit 407. Demodulation section 502 demodulates the modulated data output from RF section 407 and converts it into a digital signal. The frame assembling unit 503 configures data set in various buffers described later into a predetermined frame determined by the RCR-28 standard.

The frame decomposing unit 504 decomposes digital data having a frame configuration output from the demodulation unit 502 and extracts data. A / D converter 5
05 receives an RSSI signal from RF and receives an analog /
Perform digital conversion. The level detection unit 506 compares the digital signal from the A / D converter 505 with a predetermined level. The synth control unit 507 outputs data for setting the PLL included in the RF unit 407. The main control unit I / F unit 508 accommodates a bus 412 connected to the main control unit 401, and writes and reads control data.

The transmission buffer 509 is a buffer for temporarily storing data to be transmitted every 5 ms when transmitting data, and the reception buffer 510 temporarily stores the data decomposed by the frame decomposing unit 504. This is a buffer for temporarily storing.

ADPCMI / F 511 is an ADPCMI / F 511 to be described later.
The audio data compressed to 32 Kbps by the PCM codec 513 is temporarily stored in order to form the audio data into a predetermined frame.
The audio data for 5 ms decomposed in step 4 is temporarily stored.

The sound source section 512 digitally stores PB signals, signals such as BT and DT, ringtones, and the like. A
The DPCM codec 513 converts the input analog signal into a digital signal of 32 Kbps, and D / A converts the received digital signal and outputs it as an analog signal. The data selector 514 includes an ADPCMI /
ADPCM data input / output signal to F511
Whether input / output from / from codec 513, PCMI / F
32Kbps ADP or I / O from 516
A data output destination is selected for inputting / outputting data to / from the data input / output unit 518 as CM data.

The analog I / F 515 adjusts the level of the audio signal from the microphone 408 and converts the signal into an ADPCM signal.
The signal is output to the codec 513, the level of the analog signal from the ADPCM codec is adjusted, and the signal is output to the speaker 409.

The PCMI / F 516 inputs / outputs a PCM signal to / from the outside at a data transmission rate of 64 Kbps. The burst data I / F 517 temporarily stores the burst data signal decomposed by the frame decomposing unit 504, and outputs 32 Kbps.
The data is output to the data input / output unit 518 as an s serial signal, and the digital data input at 32 Kbps from the data output unit 518 is temporarily stored for a predetermined frame.

The data input / output unit 518 includes the data processing unit 4
ADPC data input / output at 32Kbps between 10
A process of switching according to M data and burst data is performed.

Hereinafter, a specific operation of the present system will be described.

FIG. 7 is a flowchart showing the operation of the control station in the present system.

When a process such as intermittent reception is performed as a standby process in S101, and there is an incoming call from the public network in S102, whether or not data communication is to be performed based on the layer information received in S103. to decide. If it is not the data communication, the processing at the time of the voice call is performed. If the result of the determination in S103 is that data communication has been performed, the PI
It is determined whether the communication is based on AFS. And S104
If it is not the PIAFS communication, a process for performing another data communication is performed. If it is determined in S104 that the communication is based on PIAFS, it is checked in S105 whether an incoming call such as a subaddress has been designated.

If no incoming call is specified in S105, incoming calls are made to all the terminals of the system. Also, S
If an incoming call is specified in 105, a process for making an incoming call to the specified wireless terminal is performed in S106,
In S107, it is confirmed whether or not the wireless terminal designated to receive the call is registered.

When the registration of the designated wireless terminal is confirmed in S107, processing for establishing a wireless link with the wireless terminal, such as an incoming call response and call setting, is performed in S108. During this process, at step S109, the wireless terminal station notifies the control station at the end of communication that the data communication has ended, or sends a notification signal to the designated wireless telephone indicating that the data communication has ended. Detect if you are requesting to send.

When the data end notification request is received in S109, the information is stored in S116 to notify the control station or the designated wireless terminal station of the data communication end, and the wireless link is continued in S110. Perform processing for establishing If no end notification request is received in S109, establishment of a wireless link is confirmed in S110.

When it is detected in S110 that a call between the control station and the wireless terminal station has been established, data communication is performed in S111.
If the call is not established in S110, it is detected in S117 whether a situation in which the call is not established has passed for a predetermined time.
If it is detected in S117 that the non-established state has continued for a predetermined time, the communication is disconnected in S120 and the process proceeds to a standby state.

During data communication in S111, S11
In step 2, it is detected whether the data communication is completed. If the data communication is not completed in S112,
At 118, it is detected whether or not the termination notification processing is performed in the control station. This can be set when the control station wants to hear the end notification when the data communication end notification is not received from the wireless terminal station in S109.

When the end notification setting process is performed in S118, the setting is stored in order to notify the control station or the designated wireless terminal station of the end of data communication in S119, and when the setting is completed, Data communication is continued in S111.

When it is detected that the data communication has been completed in S112, the control station performs processing for disconnecting the communication in S113.

When the release of the public network and the release of the wireless channel are completed in S113, the control station detects in S114 whether or not the data communication end notification is set. And
If the data communication end notification has not been set in S114, the process directly proceeds to the standby state. Also, S11
If the data communication end notification is set in S4, S1
The control station analyzes whether the information set in step 15 gives an end notification in the control station or gives a notification to the specified extension wireless telephone, and performs the specified notification processing.

FIG. 8 is a flow chart showing the processing when the communication end notification is made in S115.

If the control station detects a setting indicating the end of data communication in step S121 after the data reception processing is completed, the control station emits a sound different from a ring tone or the like in step S127, and displays the display section. Of the "data communication end" is displayed on the LCD, and the user is notified that the data communication has ended. It is also conceivable to notify the user of the end of data communication by turning on the LED at the same time.

During the notification of the end of the data communication in the control station in S127, it is detected in S128 whether a predetermined time has elapsed since the start of the notification. If the predetermined time has not elapsed in S128, a signal indicating cancellation of notification by the user from the control station or the wireless terminal station is detected in S125. As a method of detecting the release, the release processing is performed by detecting the pressing of a predetermined or arbitrary key by the user.

If it is determined in step S125 that cancellation of the data communication end notification has not been detected, it is determined in step S128 whether the notification process has elapsed for a predetermined time. If it is detected in S128 that the notification processing has elapsed for a predetermined time, the processing such as sounding of a predetermined sound and displaying on the LCD is ended in S126, and the processing shifts to a standby processing.

If the data communication notification processing is not set in the control station in S121, the wireless terminal station communicates with the wireless terminal station based on the specified extension address in order to perform the data communication end notification to the wireless terminal station specified in S122. To establish a wireless link. If it is not possible to notify the designated terminal due to the use of the wireless terminal station in S123 during the above processing,
At 7, the control station performs data communication end notification processing.

If it is detected in step S123 that the data communication end notification can be sent to the wireless terminal station, the control data indicating that the data communication has ended to a predetermined wireless terminal station using a control channel or the like is detected in step S124. Send After the processing, when the wireless terminal detects a signal for canceling the data communication end notification in S125, the control station ends the data communication end notification processing in S126. At this time, the extension radiotelephone is notified by an optional information notification message (BCC
H) or the like.

FIG. 9 is a flowchart showing the operation of the terminal station in the present system.

If an incoming call request from the control station is detected in S202 while standby processing such as intermittent reception is being performed in S201, it is determined in S203 whether the incoming call is an incoming call addressed to its own terminal. Then, if it is detected in S203 that the incoming call is an incoming call addressed to the own terminal, it is determined whether the communication is wireless data communication or voice communication in S204. Performs processing for link establishment.

When it is detected in S204 that the data communication is not wireless data communication, it is detected in S214 whether or not a data communication end notification signal is received from the control station. If the information is not the information, processing for performing voice communication is performed. S
Upon receiving the data communication end notification from the control station at 214,
In step S215, the wireless telephone outputs a predetermined ringing sound from the speaker unit, and also displays on the display unit that data communication from the control station has ended. Also,
When a function such as a vibration is provided, the end of data communication is notified by vibration using the function. When the notification is completed, the process proceeds to a standby process.

If it is detected in S204 that the data communication is wireless data communication, processing for establishing a wireless link such as link channel assignment and call setting is performed in S205. If the data communication end notification has been set in S206 during the process, the information indicating whether the control station sends the end notification, the other wireless terminal station sends the end notification, or the own terminal sends the end notification is given in S207. Transmits the data communication end notification information to the control station using the call control information.

When the data communication end notification ends in S207, it is detected in S208 whether or not the call has been established.
If the call has not been established in S208, S21
At 7, the cutting process is performed.

When it is detected in S208 that a call has been established, wireless data communication is started in S209. During this data communication, it is detected whether or not the wireless data communication in S210 has been completed. If it is detected in S210 that the data communication has not been completed, it is detected in S216 whether a disconnection request has been made in the network, the control station, or the terminal itself.

If a disconnection request is detected in S216, the communication is disconnected in S217. If there is no disconnection request in S216, it is detected in S218 whether or not a data end notification has been set in the wireless terminal station. This setting is set by setting a bit at a predetermined address in the storage unit.

If the setting is performed in S218, a process for storing that the information is set is performed in S219, and the data communication is continued in S209.

When it is detected in S210 that the data communication has been completed, a process for disconnecting the communication is performed in S211. When the release of the wireless channel is completed in S211, the control station sets a data communication end notification in S212. Is detected. If the data communication end notification has not been set in S212, the process directly proceeds to the standby process.

If the data communication end notification is set in S212, information including whether to notify the control station in step S213 of the end or to the designated extension wireless telephone is sent to the control station. Perform notification processing.

FIG. 10 is a flowchart showing the processing when the communication end notification is made in S213.

First, if notification at the control station is set at the end of data communication in S220, the control station is notified of the end of data communication using the control channel in S226. Upon receiving this control signal, the control station performs the above-described notification processing. Then, when the notification to the control station is completed in S226, the process shifts to a standby process in the wireless terminal station.

If it is detected in S220 that the notification processing is not the notification processing in the control station, it is detected in S221 whether or not the notification of the end of data communication to other wireless terminal stations other than the own terminal is set. If the setting has been made, S225
Based on the extension address information set in the above step, the wireless terminal station indicated by the address is notified of the end of the data communication using the control channel. The wireless terminal station that has received the end notification performs a data communication end notification shown below,
The process moves to the standby state.

If it is not a notification to another wireless terminal station in S221, it is determined that a data communication end notification is made in its own terminal, and in S222, a predetermined ringing sound output, LCD display, LED lighting, etc. A data communication end notification process is performed.
During the notification process, detection of cancellation of the data communication end notification by pressing a predetermined or arbitrary key of the key input unit during the data communication end notification is performed in S223.

While detecting the cancellation of the data communication end notification in S223, it is detected in S227 whether a predetermined time has elapsed from the start of the notification. If the predetermined time has not elapsed, S
At 223, detection of notification cancellation is continued. If it is detected in S227 that the predetermined time has elapsed since the start of the notification process during the detection of the termination of the data communication termination, the wireless data communication termination notification process is terminated in S224, and the process proceeds to a standby process.

FIG. 11 is a sequence chart showing the operation when the control station notifies the end of data communication.

In step S301, the control station receives a call setting indicating an incoming call from the network. If the control station detects data communication using PIAFS based on called terminal information and the like included in the call setting information, the control station uses wireless communication in step S302. And outputs an incoming call request to the wireless terminal station.

When the radio terminal station receives the incoming call request and detects that the call is addressed to its own terminal, it transmits a link channel assignment request to the control station in step S303, indicating that it can respond. .

When the control station receives the link channel assignment request, it searches for a free radio channel, selects a channel with a good radio condition, and transmits the channel information selected in S304 to the radio terminal station as a link channel assignment request. . The wireless terminal station that has received the request changes the channel based on the received channel information to perform communication, and transmits an incoming call response to the control station in S305.

When the control station receives the incoming call response,
At 306, a call setting indicating that the call setting is to be started is transmitted to the wireless terminal station, and communication type information indicating that this call performs data communication is notified. The wireless terminal station that has received the call setting information determines whether or not communication is possible with the control station based on the communication type information indicating data communication in the call setting information in step S307. For example, a call setting reception indicating that the call setting has been started is transmitted.

Further, the control station receiving the call setting acceptance,
In step S308, a call setting acceptance is transmitted to the network. If the wireless terminal station has already been set to notify the end of data communication at the end of data communication, the information for notifying the control station of the end of data communication using the fixed shift information element during reception of the call setting Send

After transmitting the call setting reception in S307, the wireless terminal station transmits a call to the control station in S309 after transmitting the signal, and causes the wireless terminal station to ring a ring tone. If there is information indicating a notification at the time of data communication termination during call setting reception, the information is stored. The control station having received the call transmits a call to the network in S310, and notifies that the call is currently being made.

If a response is made by the wireless terminal station in off-hook or the like in S311 during the transmission of the call signal, a response is transmitted to the control station. When the control station receives the response,
A response is transmitted to the network in S312. When a response acknowledgment is transmitted from the network in S313 for the response, the control station
At 314, a response acknowledgment is sent to the wireless terminal to notify the terminating wireless terminal that the call has been provided.

After receiving the signal, data communication is performed between the partner terminal and the wireless terminal station via the network and the control station in S315. At this time, the wireless terminal station processes data in accordance with the PIAFS protocol and receives data communication at 32 Kbps. At this time, if the setting of the data communication end notification is performed at the control station using the key input unit or the like, the information is set, and at the end, the control station notifies the end.

When the control station receives a disconnection from the network in S316 during communication in S315, the control station transmits a call to disconnect the call.
In S317, a disconnection is transmitted to the wireless terminal station. The wireless terminal station that has received the disconnection transmits a release to the control station in S318, and the control station that has received the release transmits a release to the network in S319.

In response to the release, when the release completion is transmitted from the network to the control station in S320, the control station transmits the release completion to the wireless terminal station in S321. Subsequently, the control station executes S3
At 22, a wireless channel disconnection is transmitted to the wireless terminal station,
Release the wireless channel. The wireless terminal station that has received the wireless channel disconnection transmits a wireless channel disconnection completion to the control station in S323, and notifies the control station that the wireless channel has been released on the wireless terminal station side.

When the control station detects that the wireless data communication has been completed normally, it detects whether or not the control station has set the notification of the end at the time of the end of the data communication. Then, the control station informs the output of the predetermined ringing sound and the normal termination on the display unit.

FIG. 12 is a sequence chart showing the operation when the designated extension radio telephone notifies the end of data communication.

In step S401, when the control station receives a call setting indicating an incoming call from the network and detects that the data communication is the PIAFS-based data communication based on the receiving terminal information included in the call setting information, the control station uses the wireless communication in step S402. And outputs an incoming call request to the wireless terminal station. The wireless terminal station receives the incoming call request,
Upon detecting that the incoming call is addressed to the own terminal, a link channel assignment request is transmitted to the control station in step S404, indicating that a response is possible.

Upon receiving the link channel assignment request, the control station searches for a free radio channel, selects a channel with a good radio condition, and transmits the channel information selected in S404 to the wireless terminal station as a link channel assignment request. . The wireless terminal station receiving the request changes the channel based on the channel information received for performing communication,
In step S405, an incoming call response is transmitted to the control station.

When the control station receives the incoming call response, S
At 406, a call setting indicating that the call setting is to be started is transmitted to the wireless terminal station, and communication type information indicating that this call performs data communication is notified.

The wireless terminal station receiving the call setting information determines whether or not communication is possible with the control station based on the communication type information indicating data communication in the call setting information in S407.
If communication is possible, a call setting reception indicating that the call setting has been started is transmitted.

If the wireless terminal station has already been set to notify the end of data communication at the end of data communication, the control station uses the fixed shift information element to notify the control station of the end of data communication at the time of accepting the call setting. Send the information to do. The information includes extension information for notifying the end of data communication.

The control station that has received the call setting acceptance receives the call from the S4.
At 08, a call setting acceptance is similarly transmitted to the network. S40
After transmitting the call setting reception in step 7, the wireless terminal station transmits a call to the control station in step S409 after transmitting the signal, and causes the wireless terminal station to sound a ring tone. Also, if there is information indicating a notification at the end of data communication during call setting acceptance,
The information is stored. The control station having received the call, S4
At step 10, a call is sent to the network to notify that the call is currently being made.

If a response is made by the wireless terminal station in off-hook or the like in S411 during the transmission of the call signal, a response is transmitted to the control station. When the control station receives the response, S
At 412, a response is sent to the network. S for the response
When a response confirmation is transmitted from the network in 413, the control station proceeds to S4
At 14, a response confirmation is transmitted to the wireless terminal station to notify the called wireless terminal station that the call has been provided. After receiving the signal, data communication is performed between the partner terminal and the wireless terminal station via the network and the control station in S415.

At this time, the wireless terminal station processes data according to the PIAFS protocol and receives data communication at 32 Kbps. At this time, if a setting is made at the control station to perform a data communication end notification at the designated extension wireless telephone using the key input unit or the like, the information is set, and the termination is performed at the designated extension wireless telephone at the end. Notification.

When the control station receives a disconnection from the network in S416 during communication in S415, the control station transmits a disconnection to the wireless terminal station in S417 to disconnect the call. The wireless terminal station having received the disconnection transmits a release to the control station in S418, and the control station having received the release transmits a release to the network in S419.

In response to the release, when the release completion is transmitted from the network to the control station in S420, the control station transmits the release completion to the wireless terminal station in S421. Subsequently, the control station
At 422, a wireless channel disconnection is transmitted to the wireless terminal station to release the wireless channel. The wireless terminal station that has received the wireless channel disconnection transmits a wireless channel disconnection completion to the control station in S423, and notifies the control station that the wireless channel has been released on the wireless terminal station side.

When the control station detects that the wireless data communication has ended normally, it detects whether or not a setting for notifying the end at the designated extension wireless telephone at the end of the data communication is made. If so, S42
4. In step S425, the designated extension radio telephone is notified of the output of the predetermined ringing sound and the normal termination is notified on the display unit using the notification signal, and the extension radio telephone is notified of the end of data communication.

[0107]

As described above, according to the present invention,
In a wireless communication system including a control station accommodating a public network and a wireless terminal station wirelessly connected to the control station, when the wireless terminal station performs data communication through the control station and the public network, Even if the user is away from the wireless terminal station during data communication, the user can know that the data communication has ended normally, so that the operability is improved and an efficient wireless communication system can be provided. There is.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a wireless communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of a control station used in the embodiment.

FIG. 3 is a block diagram showing an internal configuration of the wireless telephone used in the embodiment.

FIG. 4 is a block diagram illustrating an internal configuration of a wireless terminal station used in the embodiment.

FIG. 5 is a block diagram illustrating an internal configuration of a wireless communication processing unit used in the embodiment.

FIG. 6 is a block diagram illustrating an internal configuration of a wireless communication processing unit used in the embodiment.

FIG. 7 is a flowchart showing an operation of a control station used in the embodiment.

FIG. 8 is a flowchart showing an operation of a control station used in the embodiment.

FIG. 9 is a flowchart showing an operation of the wireless terminal station used in the embodiment.

FIG. 10 is a flowchart showing an operation of the wireless terminal station used in the embodiment.

FIG. 11 is a flowchart showing an operation of the control station of the embodiment when notifying the end of data communication.

FIG. 12 is a flowchart showing an operation of the designated extension wireless telephone according to the embodiment for notifying the end of data communication.

[Explanation of symbols]

 101: partner terminal, 102: public line, 103: control station, 104: wireless telephone, 105: wireless adapter, 106: data terminal / peripheral device, 107: wireless terminal station.

Claims (6)

[Claims] 1. A wireless communication system comprising: a control station that controls the entire system and accommodates at least one public line; and at least one wireless terminal station that is wirelessly controlled by the control station. The station comprises an incoming call detecting means for detecting the type of incoming call from the public network, a communication means for communicating wirelessly with the wireless terminal station, an end detecting means for detecting the end of the wireless communication, and a display for displaying a communication state. Means, when the incoming call detection means detects that the incoming call type is wireless data communication, the communication means performs data communication with the wireless terminal station, and the end detecting means indicates that the wireless data communication has ended. And a termination notifying unit for notifying that the wireless data communication has been terminated by using the display unit when detected. Stem. 2. The wireless communication system according to claim 1, further comprising means for controlling, by a control station, whether or not there is a termination notification when the wireless data communication is terminated. 3. The wireless communication system according to claim 1, further comprising means for controlling, in the wireless terminal station, whether or not there is a termination notification when the wireless data communication is terminated. 4. The wireless communication system according to claim 1, further comprising means for controlling, in a wireless telephone accommodated in the control station, whether or not there is a termination notification when the wireless data communication is terminated. system. 5. A control method for a wireless communication system having a control station for controlling the entire system and accommodating at least one public line, and at least one wireless terminal station when wirelessly controlled by the control station. The control station detects an incoming call type from a public network, a communication step of performing wireless communication with a wireless terminal station, an end detection step of detecting an end of wireless communication, and a communication state. A display step of displaying, and when it is detected that the incoming call type is wireless data communication in the incoming call detecting step, data communication with the wireless terminal station is performed in the communication step, and the wireless data communication is ended by the end detecting means. And an end notification step of notifying that the wireless data communication has ended by using the display step when detecting that A control method for a wireless communication system. 6. A program for controlling a wireless communication system having a control station for controlling the entire system and accommodating at least one public line, and at least one wireless terminal station when wirelessly controlled by the control station. In the computer-readable storage medium, the control station detects an incoming call type from a public network, a communication step of performing wireless communication with a wireless terminal station, and detecting an end of wireless communication. End detection step to perform, a display step of displaying the state of communication, and when the incoming call detection step detects that the incoming call type is wireless data communication, performs data communication with the wireless terminal station in the communication step, Upon detecting that wireless data communication has ended in the end detection step, the wireless data communication has ended using the display step. Storage medium characterized by storing a program for executing a completion notification step of notifying that, the.