KR970011432B1 - Group paging system - Google Patents

Abstract

The present invention provides a group calling control method for private cordless telephone system which enables a subscriber to have a telephone communication with a plurality of group telephone subscribers simultaneously by pushing a group call number, thus saving the trouble of calling them individually and reducing the time required for telephone conversation. The inventive method includes the steps of: transmitting a paging signal to a corresponding connection unit if an input signal is a paging and group call signal, and if not, transmitting an ON/OFF hook signal to a corresponding portable equipment; transmitting an OFF hook signal to the portable equipment if there is the paging and group call signal from the outside, and transmitting a recognition signal about the calling and ON/OFF hook signal if there is a call signal from the portable equipment while the paging signal does not exist; and transmitting a general call signal to an idle channel if a call is from another portable equipment, and transmitting a ring signal and OFF hook signal about the group call, if any.

Description

Group Call Control Method of Wireless Telephone System

1 is a block diagram of a wireless telephone system in the premises.

2 is a block diagram of a portable device in an on-premises wireless telephone system.

3 is a block diagram of a connection device in an on-premises wireless telephone system.

4 is a block diagram of a control device in an on-premises wireless telephone system.

5 is a block diagram showing an identification code of a portable device according to the present invention.

6 is a flowchart of a control device according to the present invention.

7 is a flowchart of a high frequency unit in the connection device according to the present invention.

8 is a flowchart of a portable device according to the present invention.

* Explanation of symbols for main parts of the drawings

la to ln: portable device 2a to 2n: connection device

3: control device 4: private exchange

5: subscriber loop

6: wired call circuit and data network

41,91: antenna 42,92: duplexer

43,93 transmitter 44,94 receiver

45,45,95,96: Frequency Synthesizer

47,97: data demodulator 48,98: data demodulator

49,99: EEPROM 31: switch

32 control unit 33 data network control unit

34: memory 35: user interface

70,80: control unit 71: user interface

81: hybrid 82: data interface

100,200: Analog-to-digital converter

The present invention relates to a control method of an internal wireless telephone system, and in particular, a plurality of portable devices grouped by pressing a group call number when any one subscriber requests simultaneous call with a plurality of mobile device subscribers or all mobile device subscribers. The present invention relates to a group call control method of a wireless telephone system in a premises, which allows a call with a subscriber.

In general, an internal wireless telephone system includes a control device 3 connected from a private switch 4 via a subscriber loop 5, as shown in FIG. 1, and a wired call circuit and data network from the control device 3; And a plurality of connection devices 2a to 2n connected via 6), and a plurality of portable devices la to ln connected to the connection devices 2a to 2n via a wireless communication line.

A detailed block diagram of the portable device is shown in FIG.

That is, the portable devices 1a to 1n have a transmitter 43 and a receiver 44 for wireless communication with the connection devices 2a to 2n, and the transceivers 43 and 44 are duplexers ( It is connected to the antenna 41 via 42.

In addition, the channel for communication is set by local oscillation signals supplied from the first and second frequency synthesizers 45 and 46 coupled to each of the transceivers.

A data modulator 47 and a data demodulator 48 for data communication are respectively coupled to the transceiver, and the data modulator 47 and the demodulator 47 are coupled to a controller 70.

In addition, the user interface 71 composed of a handset and a keypad is combined with an input of a transmitter 43 and an output of a receiver 44, respectively, so that voice, data, and dual tone multi-frequency (Dual Tone Multi Frequency: hereinafter "DTMF") are combined. Modulates, demodulates and transmits and receives signals.

The Y pyrom 49 coupled to the controller 70 stores a group identification code, a connection device identification code, a portable device identification code, and the like.

In addition, an analog-to-digital converter 200 for measuring the electric field strength of the signal received from the receiver 44 is connected between the receiver 44 and the controller 70.

3 shows a specific block diagram of the connection device shown in FIG.

That is, the connecting device has similar components corresponding to those of the portable device of FIG.

Antenna 91, duplexer 92, transceiver 93, 94, third and fourth frequency synthesizer 95, 96, data converter, demodulator 97, 98 ), Y pyrom analog-to-digital converter 100 and the control unit 80 is provided.

In addition, the connecting device is provided with a hybrid 81 and a data interface 82 for communicating with and communicating with the data network 6 of FIG. 1, wherein the hybrid 81 has an input and a receiver of the transmitter 93. Respectively coupled to the output of 94 to communicate voice and DTMF signals with the control device 3 via the data network 6, and the data interface 82 is combined with the controller 80 to similarly transmit data signals. It communicates with the control device 3 via the data network 6.

4 shows a control block 3 of FIG. 1 in a specific block diagram.

The control device 3 is connected to the private exchange 4 via a switch having a switch function for connecting a wired call circuit between the private exchange 4 and the plurality of connection devices 2a to 2n, and the wired call circuit 6 It is connected with a plurality of connection devices (2a to 2n) through.

The switch unit 31 is coupled to the control unit 32, and the control unit 32 is coupled to the data network control unit 33 for mutual data communication with the access device via the data network 6.

In addition, the control unit 32 is connected to the memory 34 that stores the group identification code, access device identification code, portable device identification code, portable device location information, subscriber number and data necessary for system control, keypad and display It is connected to the user interface 35 including the unit and performs the functions of system control and data input and output.

The operation process in the premises wireless telephone system made as described above is as follows.

Each of the high frequency units and the portable devices 1a to 1n in the connection devices 2a to 2n receive the respective state rotor signaling signals in the pay state and find an empty channel for transmitting the signaling signals to each counterpart when necessary. By the control from the control unit 70, 80, the frequency synthesizer 46, 96 is set to the frequency of each given channel, and the scan operation for measuring the presence or absence of a signaling signal and the magnitude of the electric field strength is repeated. The information is recorded in each ypyrom 49 and 99.

During the above scan operation, the portable apparatuses 1a to 1n transmit a position registration signal for position registration from the control apparatus via the connection apparatuses 2a to 2n.

At this time, the portable devices 1a to 1n compare the identification code of the received connection device with the previous connection device identification code stored in the memory by the control unit 70, and the received connection device identification code and the stored connection device identification code. If different, the control unit 70 replaces the received access device identification code with the stored access device identification code, stores the signal, and transmits a location registration signal including the portable device identification code to the access devices 2a to 2n, which is in the standby state. The connection devices 2a to 2n receive the position lock request signal through the receiver 94 and are input to the controller 80.

The control unit 80 again transmits the location registration information including the portable device identification code and the connection device identification code to the control device 3 via the data network.

At this time, the control device 3 in the standby state receives the position registration information to the control unit 32 via the data network control unit 33 and updates the position registration information.

Next, a brief description will be given of a paging mode in which an external telephone is switched, and a call received from the private exchange 4 is received by the switch unit 31 through the subscriber loop 5.

The control unit 32 reads the mobile device identification code corresponding to the called telephone number from the outside, i.e., the called subscriber number and the location information of the mobile device, from the memory 34 to transfer the call information including the mobile device identification code to the access device. The connection devices 2a to 2n that transmit and receive the call information transmit the transmission unit 93 to the portable device.

At this time, the portable devices 1a to 1n in the standby state receive the call signal through the receiver 44, and then transmit the call response signal to the connection devices 2a to 2n through the transmitter 43, and the connection is made. The device again sends a call response signal to the control device 3 indicating that the portable devices 1a to 1n have answered the call.

At this time, the control unit 70 of the portable apparatuses 1a to 1n outputs a call alert via a bell (not shown) of the user interface 71 to inform the portable apparatus of the call.

If the user off-hooks the hook switch (not shown) of the portable devices 1a to 1n, the off-hook signal is sent to the control device 3 through the transmitter 43 and the connection devices 2a to 2n of the portable device. The call is made by transmitting the call paths to the connection devices 2a to 2n and the control device 3, respectively.

Subsequently, in the case of the call mode transmitted by the portable apparatuses 1a to 1n, the user controls the hook synthesizer (not shown) of the portable apparatuses 1a to 1n to make a call. Use (45,46) to select any free empty channel.

The portable devices 1a to ln transmit the call signal including the portable device identification code through the transmitter 43 via the selected channel.

On the other hand, the connection apparatuses 2a to 2n receive the call signal through the receiving unit 44, and then the control unit 80 transmits the call response signal to the portable apparatus (1a to 1n) via the transmitter 93 and makes a call. The call signal including the portable device identification code is also transmitted to the control device 3.

Receiving the call signal, the control device 3 checks the subscriber number corresponding to the calling mobile device identification code from the memory 34, and the control unit 32 sends a call signal to the subscriber loop 5 corresponding to the subscriber number. By connecting the wired telephone circuit 6 and the subscriber loop through the switch unit in order to connect to the transmitted connection devices 2a to 2n, the call is made possible.

When the call is enabled, the user receives a dial tone, that is, a dial tone, from the private exchange 4 through a handset (not shown) of the user interface 71. Then, when the user performs a dialing operation, the dial signal is connected. Inputs are made to the private exchange 4 via the devices 2a to 2n and the control device 93.

Thereafter, the portable apparatuses 1a to 1n receive a busy tone or a ringing tone from the private switchboard 4, and upon receiving the ringing tone, the call is started following the off hook operation of the called telephone number subscriber.

As described above, a call path is connected between one subscriber and another subscriber between a connection device 2a to 2n, a control device 3, and a private exchange 4 by a paging signal from a outside or a call originated by a mobile device. Is done.

In the conventional on-premises wireless telephone system as described above, if you want to make the same call to a large number of mobile phone users in the group, each individual calls and delivers a message, not only cumbersome but also very long talk time. There is a problem that the reliability of the phone is degraded.

In order to solve the above problems, the present invention simultaneously calls a plurality of mobile device subscribers grouped by pressing a group call number when any one subscriber requests a synchronous call with a group of mobile device subscribers or all mobile device subscribers. It is possible to solve the hassle and to shorten the talk time to contribute to the improvement of the reliability of the wireless wireless telephone system. The object of the present invention is to provide a control method of the wireless wireless telephone system including a control device, a connection device and a portable device. The control device transmits a paging signal to a corresponding access device when the signal from the outside is paging, and when the call is a group call signal, and judges the call of the portable device or the off / on hook state of the switch and the connection device. Control process 400 of the control device for transmitting the on, off hook signal to the corresponding device, and The access device sequentially checks the status of multiple channels and transmits an off-hook signal to the portable device when there is a paging signal and a group call signal from the outside, and a call signal transmitted from the portable device in the absence of the paging signal is transmitted. If there is a control process 500 of a connection device that transmits a recognition signal and an on / off hook signal for a call and the state of a plurality of channels in the portable device is sequentially checked, the channel is idle when the call is originated from another mobile device. And a mobile device control process 600 for transmitting a general call signal and transmitting a ring signal and an off-hook signal according to the presence or absence of a group call signal. Group call control room of the wireless telephone system in the premises, characterized in that the call is made simultaneously with a number of subscribers To provide for.

Hereinafter, described in detail by the accompanying drawings as follows.

The wireless telephone system of the present invention is a portable device which the user can carry and use as a wireless telephone at any place in the area, constitutes a dual wireless communication line with the portable device, and a plurality of connection devices connected to the control device by wire. It is a control device that forms a connection device, a wired call circuit and a data network, and connects a private switch and a plurality of subscriber loops to handle switch functions and system control, and to set up, change or cancel a wireless communication line between the access device and a mobile device. Consists of.

Basically, the block diagram of the premises wireless telephone system performing the functions of the present invention is the same as the first diagram.

That is, the portable devices 1a to 1n are connected to the high frequency units of the connection devices 2a to 2n through a wireless communication line, and the connection devices 2a to 2n are controlled through the wired communication circuit and the data network 6. It is connected with the device 3 and the control device 3 is connected with the private exchange 4 by the subscriber loop 5.

Specific block diagrams of the control device 3, the connection devices 2a to 2n, and the portable devices 1a to 1n of FIG. 1 are the same as the control device block of FIG. Fig. 2 is a block diagram of the portable device, and the structure of the portable device, the connection device, and the control device according to the present invention is shown in Figs.

The radiotelephone system of the present invention is a system having a group call function that allows a user of a radiotelephone handset in a conventional radiotelephone system to simultaneously call and talk with a group of radiotelephone handset subscribers.

First, when the portable device is initially registered, the system password, portable device identification code, and the like are assigned to the portable devices 1a to 1n using the function keys of the user interface 71 of FIG. The controller 70 recognizes this and stores a system password, a portable device identification code, and the like in the ypyrom 49.

Here, the system password is composed of 24 bits using a serial number determined according to the law, and the portable device identification code is composed of a group number and a serial number as shown in FIG.

That is, the group number is composed of binary coded ternary codes (BCD CODE) from "0" to "9", and the group number "0" is the sole call code of the portable devices 1a to 1n, respectively. 8 " is a group number and " 9 " is a call group number of all portable devices 1a to 1n, respectively.

The group call function can be explained with the control unit flow chart of FIG. 6, the high frequency unit flow chart within the connection device of FIG. 7, and the portable device flow chart of FIG.

That is, FIG. 6 is a flowchart of the control process 400 of the control device. When the paging signal is received from the outside, the control device paging processing routine L1 determines whether there is a group call number and receives the paging signal to the corresponding access device. A switch off hook processing routine (L2) for transmitting to the exchange as a call signal when it is an outgoing signal from the portable device after the processing routine, and transmitting to a corresponding connection device when it is determined that it is an off hook from the exchange; After the routine (L2), check the on-hook signal of the exchange and if it is not a group call, send the on-hook signal to the connected device. If it is on-hook for a group call, send the signal to the connected device and then carry the portable device of the group. Switch on-hook processing routine (L3) to keep it idle, and the group according to the off-hook determination of the group call on off-hook from the connecting device. A device off hook processing routine (L4) for making a mobile device call and sending an off hook signal to the exchange, and the device is on hook and on hook for a group call. It is composed of a connection device off-hook processing routine (L5) which makes the mobile device of the group idle and transmits an on-hook signal to the exchange.

7 is a flowchart of the control process 500 in the access device according to the present invention, which sequentially checks the frequency state electric field strength synchronization signal detection of a plurality of channels and registers the channel as an idle channel when the electric field intensity is higher than the reference value. Paging processing routine for checking off the off-hook of the group call and the portable device when paging from an external portable device when the synchronization signal is detected in the sensing processing routine (L6) and the channel sensing processing routine (L6). L7) and a mobile device call transmitting a recognition signal and a call signal for a call and transmitting an off and on hook signal to the call signal of the mobile device when the call signal is checked in a state other than the paging from the external portable device. It consists of a processing routine (L8).

8 is a control process 600 of a portable device according to the present invention. The channels are sequentially selected to check frequency states, field strengths, and whether to detect synchronization signals, and register as idle channels when the field strengths are higher than a reference value. If the channel detection processing routine (L9) and the channel detection processing routine (L9) detect a registered signal, the mobile device transmits the call to an idle channel when the call is sent from the portable device. In the transmission processing routine (L10) for transmitting the call, the transmission processing routine (L10) determines that the call is from the outside when the mobile device is outgoing, and in the case of a group call, rings a ring signal for the group call so that the call is possible. A group call processing routine (L11) and a general transmission process routine (L12) for transmitting a ring signal and an off-hook signal when the group call processing routine (L11) is not a group call. The.

Hereinafter, the operation process of the present invention will be described with reference to FIGS. 1 to 8. First, the connection devices 2a to 2n and the portable devices la to an are shown in the high frequency flow chart in the connection device of FIG. 7, and FIG. 8. As shown in the portable device flow chart, the first channel is set to the frequency synthesizers 45 and 46, respectively (steps 201 and 301) and the frequency stability is performed (steps 202 and 302). When the electric field strength is measured by the analog converter (100,200) (steps 203,303) and the electric field strength is lower than the reference value, it is stored in the ipilom (44) (94) as an idle channel (steps 204,305) and the field strength is selected. If it is above the reference value, it is determined whether the synchronization signal is detected (steps 205, 304). If the synchronization signal is not detected, the next channel is selected. In step 9206, 306) the last channel is checked (steps 207, 308). License (207,308) Step) and repeats the process of moving to the first channel selection (steps 201 and 301) or whether the frequency is stable (steps 202 and 302). When the synchronization signal is detected, the process proceeds to the next step according to the signaling signal.

Referring to the group call of the paging signal from the outside, the call from the private exchange 4 is received by the control device 3 through the subscriber loop 5 and the control device 3 is shown in FIG. In step 101, the mobile device identification code and the mobile device location information corresponding to the called subscriber number are determined from the memory 34. Read and send the paging information including the identification code of the mobile device to the access device (step 104), if the group call number, specify the group number of the identification code of the mobile device (step 103) and send a paging signal to the access devices Upon receiving this, the connected devices 2a to 2n receive a page to an empty channel which is determined by the external paging (step 208) and stored in the e-prohm 99 as shown in FIG. After transmitting the signal (step 209), the group call request is checked (step 210), and the off-hook (step 213) of the portable devices 1a to 1n is checked (step 210). Wait for a predetermined time whether an off hook (step 213) or a carrier of a portable device exists (step 211).

In the group call, if there is a transmission carrier of the portable devices 1a to 1n, the off-hook signal is sent to the control device (step 215). In the case of no group call, the off-hook signal is sent to the control device after receiving the off-hook signal of the portable device. send.

After receiving the paging signal from the outside, the portable device (step 309) determines whether or not the group call (step 311) generates a ring signal (step 315). After confirming that the off-hook signal is applied for a predetermined time, if it is off-hook (step 302), when the call is made after transmitting the off-hook signal to the connection devices 2a to 2n, if it is a group call, the frequency synthesizer 45 of the portable devices 1a to 1n is used. Set the transmitter 45 to save the transmission carrier (step 313), generate a ring for the group call (step 314), and determine whether the user off-hooks the mobile device (1a to 1n) (step 322). If the user of the portable device does not off-hook within a predetermined time, the user moves to the next channel selection (step 306).

Next, the group call in the call mode sent by the portable apparatuses 1a to 1n will be described.

When the user of the portable apparatuses 1a to 1n presses the group call number using the function key of the user interface 71 of FIG. 2, the controller 70 recognizes the group call number (step 307) and stores the empty channel stored in the Y. pyrom 49. FIG. The frequency synthesizer 45 is set to transmit the call signal to the connection devices 2a to 2n through the transmitter 43, the duplexer 42, and the antenna 41 (step 310). 2a to 2n), it is determined whether the recognition signal is received (step 312). If the recognition signal is not received, the call is transmitted again to the empty channel (step 310). In step 316, it is determined whether the mobile device is off-hook (step 317). If it is off-hook, the call is made. If the mobile device is on-hook, the mobile device sends an on-hook signal to the access device (step 318).

Upon receiving the call of the mobile devices 1a to 1n, the connection devices 2a to 2n determine whether the call is made by the mobile device (step 216), and if not the call, selects the next channel and calls the call if the mobile device makes the call. A recognition signal for the mobile device is transmitted to the mobile device (step 217), and the call signal of the mobile device is transmitted to the control device 3 (step 218). Step 106).

Accordingly, the exchange receiving the call is transferred to the control device 3, the connection devices 2a to 2n, and the portable devices 1a to 1n in the same process as in the call application from the outside described above to make a call.

In the following, when a call is terminated while a group call is made, the call can be divided into a case in which the user who calls the group is on-hook and a case where the user of the mobile device receiving the group call is on-hook. .

When the on-hook signal of the user who makes a group call is externally received by the private exchange 4, the private exchange 4 sends an on-hook signal to the control device 3, and the received control device receives the on-hook signal from the exchange of FIG. In step 110, it recognizes whether an on-hook signal is applied to the group call (step 111). If it is an on-hook signal for the group call, it sends all the on-hook signals to the corresponding connection devices (step 112). If it is not the on-hook, the on-hook signal is sent to the connected device (step 113).

The connected devices 2a to 2n receive the on-hook signal to the corresponding portable devices 1a to 1n, and the portable device receives the on-hook signal to terminate the call. When the user call on the group call is pressed by pressing a function key of the user interface 71 of FIG. 2, the control unit 70 recognizes this and the data modulator 47, the transmitter 43, the duplexer 42, and the antenna 41 are connected. When the on-hook signal is sent to the access device, the control unit (3), and the private exchange, the on-hook signal is sent to all the mobile devices of the group as in the case of receiving the on-hook signal from the outside described above. Will end.

When the mobile devices 1a to 1n receiving the group call are on hooks, the control unit 70 of the mobile device initializes the frequency synthesizer to turn off the transmitter, and the connection device controls the off signal for the group call when the receiving carrier disappears. (3) and the control device receives the on-hook signal (step 118) and checks the on-hook signal for the group call (step 119) and sends the on-hook signal to the exchange if it is not a group call (step 121). If it is on-hook for the call, it is determined whether the hook signal from all the connection devices (2a to 2n) corresponding to the group call has been received (step 120). The call is terminated by sending an on-hook signal to the private exchange 4 (step 122).

As described above, according to the present invention, when any one subscriber requests a call simultaneously with a plurality of mobile device subscribers or all mobile device subscribers, the present invention allows a user to simultaneously call a plurality of mobile device subscribers grouped by pressing a group call number. It will help to reduce the hassle and shorten the talk time, thereby improving the reliability of the wireless wireless telephone system.

Claims (4)

In a control method of an internal wireless telephone system including a control device, a connection device, and a portable device, the control device transmits a paging signal to a corresponding connection device when the signal from the outside is paging, and if the signal is a group call signal. If the call of the portable device or the switch and the connection device determines the off, on hook state of the control unit 400 and transmits the on, off hook signal to the corresponding device, and the connection device sequentially the state of the plurality of channels If the paging signal and the group call signal from the outside exist, the device transmits the off-hook signal to the mobile device. If there is a paging signal and there is a call signal from the mobile device, the recognition signal for the call and the on-call signal are transmitted. The control process 500 of the connection device for transmitting the off-hook signal, and the status of the plurality of channels in the portable device in sequence Then, if the call is made from another mobile device, the mobile device transmits a normal call signal by sending it to an idle channel, and transmits a signal for a group call and transmits a ring signal and an off-hook signal according to the presence or absence of a group call signal. The process 600 is a group call control method for a wireless telephone system in the premises, characterized in that any one subscriber is made to the call simultaneously with a plurality of grouped subscribers. The apparatus of claim 1, wherein the control process 400 of the control device comprises: a control device paging processing routine L1 for determining whether a group call number is received when receiving a paging signal from the outside and receiving the paging signal to the corresponding access device; A switch off-hook processing routine (L2) for transmitting to the switch as a call signal when it is an outgoing signal from the portable device after the processing routine, and transmitting to a corresponding connection device when it is determined that it is an off-hook from the switch; After performing routine (L2), check the on-hook signal of the exchange and if it is not a group call, send the on-hook signal to the connected device. If it is on-hook for the group call, send the signal to the connected device and then carry the portable device of the group. The switch on-hook routine (L3), which remains idle, and the off-hook determination of the group call on off-hook from the low speed device. The off-hook processing routine (L4) for making the portable device of the call state and transmitting an off-hook signal to the exchange, and the hook-up device is on hook and on-hook for a group call. A group call control method for a wireless telephone system in a premises, which consists of a connection device off-hook processing routine (L5) that checks and puts the mobile device of the group in an idle state and transmits an on-hook signal to the exchange. The channel sensing processing routine (L6) according to claim 1, wherein the access point control process 500 sequentially checks a frequency state electric field strength synchronization signal detection of a plurality of channels and registers an idle channel when the electric field intensity is higher than a reference value. Paging processing routine (L7) which transmits an off-hook signal by checking that the channel call processing routine (L6) is a paging from an external portable device when the synchronization signal is detected, and that it is an off-hook of the group call and the portable apparatus; When the call signal is checked in a state other than the paging from the mobile device, the mobile device call processing routine L8 transmits a recognition signal and a call signal for the call, and transmits an off and on hook signal to the call signal of the mobile device. Group call control method of wireless telephone system in premises. The channel sensing process of claim 1, wherein the portable device control process 500 sequentially selects channels to check frequency states, electric field strengths, and whether or not registered signals are detected, and registers as idle channels when electric field strengths are higher than a reference value. Routing (L9) and the channel detection processing routine (L9) in the case of a call detected by the mobile device when the synchronization signal is detected, the mobile device transmits to the idle channel, and transmits the recognition signal of the connection device for the call and the off, on hook signal If the transmission processing routine (L10) and the transmission processing routine (L10) is not a call originating from the mobile device, it is determined whether the call is paging from the outside, and in the case of a group call, a group call is made by ringing a ring signal for the group call. A premise radiotelephone which has a processing routine L11 and a general transmission processing routine L12 which transmits a ring signal and an off-hook signal when the group call processing routine L11 is not a group call. Group call control method of system.