JPS63318831A - Radiotelephony system - Google Patents

Abstract

PURPOSE:To realize the call of a radiotelephone set even though the telephone moves out of a registered radio zone by calling the telephone via a radio connection device of each radio zone in case no answer is received from the radiotelephone set within a prescribed time. CONSTITUTION:A radiotelephone set 13 moves out of a radio zone registered in a subscriber file 115b of a radio circuit controller 11 and a position register button is not operated yet. Under such conditions, the telephone set 13 receives a call and the controller 11 calls the telephone set 13 via a radio connection device 12. However no answer is received from the telephone set 13. Thus a control part 110 of the controller 11 gives an instruction of the device 12 of each radio zone to transmit a call control signal as long as no answer signal is received from the telephone set 13 within a prescribed time after transmission of the call control signal. Then the call control signal is transmitted from the device 12 of each zone and the telephone set 13 can receive the call control signal.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a wireless telephone device used in cordless telephones, car telephones, and the like.

Conventional technology In general, wireless connection devices ((1:E)) that perform wireless communication with wireless telephones (R placement) such as mobile stations such as cordless telephones and car phones are placed in each wireless zone, and these wireless connection devices A radio line control unit (RCU) is installed to communicate with the (CE), and this radio line control unit (RCU) is connected to an exchange connection device (such as a private branch exchange (PBX) or central office exchange) (:
2. Description of the Related Art Radiotelephone devices are known that perform communication between radiotelephones (R-set) or communication via a central office line between radiotelephones (R-set) by being connected.

In this radiotelephone device, since the radiotelephone (R unit) is a mobile station, the radio zone etc. in which each radiotelephone (R unit) is located is registered in advance in the radio line controller (RCU), and the radio line control unit (RCU) is registered in advance. The device (RCU) forms a communication path with the wireless telephone (R unit) using this registered wireless zone.

Note that the radio line control unit (RCU) and the radio connection equipment (CE) described above correspond to a system control station and a base station of each radio zone in the car telephone system, respectively.

Conventionally, when this type of wireless telephone device receives a call to a wireless telephone (R station), the call is called via a wireless connection device (CE) in the wireless zone of the wireless telephone (R station) that is registered in advance, and the calling party is called. A ring pack tone is sent to the telephone, and if the called party's wireless telephone (R) does not respond, a busy tone or voice message indicating absence is sent after a predetermined period of time, or a ring back tone is sent. Continue sending.

Problems to be Solved by the Invention However, in the above-mentioned conventional wireless telephone device, when the wireless telephone (R location) moves outside the registered wireless zone, the wireless There is a problem in that when a call arrives at the telephone (R), it cannot be called.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a wireless telephone device that can call a wireless telephone even if the wireless telephone moves outside a registered wireless zone.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a method that, upon receiving a call, calls a wireless connection device via a wireless connection device placed in a wireless zone in which a wireless line control device is registered in advance. The present invention is characterized in that if there is no response from the wireless telephone within a predetermined time, the wireless telephone is called via a wireless connection device placed in each wireless zone.

Function The present invention is configured to call the wireless telephone via the wireless connection device placed in each wireless zone if there is no response from the wireless telephone within a predetermined time. Even if the wireless telephone is moved, the wireless telephone can be called.

EXAMPLES Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram showing one embodiment of the wireless telephone device according to the present invention, FIG. 2 is a detailed diagram of each device of the wireless telephone device of FIG. 1, and FIG. FIG. 4 is an explanatory diagram of each file of the wireless connection device in FIGS. 1 and 2. FIG. 5 is an explanatory diagram of each file of the wireless connection device in FIGS. 2 is an explanatory diagram of each file of the radio telephone device, and FIG. 6 is a timing chart for explaining the operation of the radio telephone device of FIGS. 1 and 2.

In FIG. 1, 11 is a fixed station connected to the existing exchange IO and controls the entire radio telephone device, and 12+, 122 to 12n are fixed stations for communication. They are low-power wireless connection devices (CE) with a radius of about 30 to 100 meters, and there are a plurality of these wireless connection devices 121, 122 to 12n, respectively. These wireless connection devices 121, 122 to 12n each constitute one wireless zone z1, z2 to zn, and perform wireless communication with the wireless telephone (R location) 13 located in the wireless zone.

Wireless zones Z1, Z2 to zn are wireless line control devices 11
The wireless service area is controlled by
When a caller carrying 3 (in the case of a cordless phone) is located within this service area, communication with other wireless telephones 13 is performed via the wireless line control device 11 and wireless connection devices 121, 122 to 12n. It is configured so that communication can be carried out via telephone lines or central office lines.

The wireless line control device 11 is connected to the existing exchange 10 via the same number of telephone lines as the number of wireless telephones 13, and is connected to the wireless connection device 121 in each wireless zone z1, z2 to zn.
．． 122 to 12n are arranged in a number that is a fraction of the number of wireless telephones 13 depending on the busy hour traffic and the call loss rate.

Next, detailed configurations of the radio line control device 11, each radio connection device 12, and each radio telephone 13 will be explained with reference to FIG.

In the radio line control device 11, 110 is a control unit that controls the entire radio line control device 11, and this control unit 1
10 is a microcomputer (CPU) and a ROM (lead-off 9) in which an execution program of the CPU is stored. :, RAM with CPU i-area, etc. (
Random access memory).

The ROM of the control unit 110 includes a program for registering the wireless zone in which the wireless telephone 13 is located, which will be described later, a missed call program for calling the wireless telephone 13 that has moved outside the wireless zone, and a program for wireless communication. Stored.

1111 to IIIN are office line interfaces to which telephone lines are connected, 112 is a tone trunk that generates various tone signals, 1131 to 113m are radio line interfaces to be connected to each wireless connection device 121 to 12n, respectively; 114 is a matrix switch for connecting the office line interfaces 1111 to 111N, the tone trunk 112, and the wireless line interfaces 1131 to 113m.

115a, as shown in FIG. 3 1a), the identification number of this radio line control device 11, that is, the system identification number (SYS-ID), the system capacity that indicates the number of subscribers, the number of radio zones n, that is, the wireless Various data such as station data of the wireless connection device such as the number of control stations of the connection device 12, the number of wireless connection devices, and monitoring timer values are stored, and control of the wireless connection device 12, which will be described later although not shown in the figure, is stored. Part 12
This is a system file in which various data to be stored in the 0 program, the wireless line connection file 125a, and the station data file 125b are stored.

115b, as shown in FIG. 3(b), the calling number (subscriber number) and identification number (R position
ID), location information such as the number of the wireless zone where you are currently located,
This is a subscriber file in which subscriber class data is stored, and the location information is rewritten when the wireless telephone 13 moves between wireless zones, as will be described later.

115c, as shown in FIG. The line connection file 115f, which stores various data such as the line number of the central office line, the line number with the wireless connection device, the status of calling/incoming calls, and the line connection time, is shown in Figure 3. As shown in (1), this is a wireless area configuration file that stores various data such as the number of each wireless zone, the number of wireless connection devices installed in each wireless zone, and the identification number of the wireless connection devices.

Reference numeral 116 denotes a control console on which the operator inputs various data of files 115a to 115f, and displays monitoring results of the wireless connection device serving as the control station.

In each wireless connection device 12, 120 is a control unit that controls the entire wireless connection device 12, and this control unit 120
is a microcomputer (CPU) and a ROM (read-only memory) that stores the CPU's execution programs.
It is roughly composed of RA'M (Random Access Memory) having a work area for the CPU, etc.

121 is a multi-channel access (MCA) wireless transceiver that performs wireless communication with the wireless telephone 13;
2 is a line interface connected to the radio line control device 11 via a 2-wire (2W) transmission line, a control signal transmitter/receiver for transmitting and receiving control signals to and from the radio line control device 11, and 124 is an audio line interface for the communication line. This is an audio control unit that turns signals on/off, amplifies them, etc.

125a, as shown in FIG. 4 (LL), the current operating state of the wireless connection device 12, the identification number (R-ID) of the currently connected wireless telephone, control of call originating/incoming call processing, etc. This is a wireless line connection file that stores various data such as sequences, various control signals with the wireless telephone 13 (wireless side), and various control signals with the wireless line control device 11 (wired side).

125b, as shown in FIG. 4(b), the identification number (SMS-ID) of the wireless line control device 11, the number of the wireless zone where the wireless connection device is installed, the identification number of the wireless connection device, and the availability. Channel search period, dial pause time when making an outside call, dial pulse speed (1
0 pI) 8 or 20 pps'').

Make rate of dial pulse (33%, 50% or 66%
This is a station data file that stores various data such as ).

In each radio telephone 13, 130 represents each radio telephone 1
This control unit 130 is a control unit that controls the entire 3.
A microcomputer (CPU), a ROM (read only memory) in which the CPU execution program is stored,
It is generally composed of a RAM (random access memory) having a work area for the CPU, etc.

131 is a multi-channel access (MCA) wireless transceiver that performs wireless communication with the wireless connection device 12;
Reference numeral 32 indicates various tones for amplifying and turning on/off the audio signals of the receiver and microphone of the handsera) 132a, and corresponding to the calling signal etc. sent from the wireless line control device 11 via the wireless connection device 12. 133 is a dial key for inputting a dial number, etc.; 134 is a hook switch (SW) that is turned on/off from off-hook/on-hook C2 of the handset 132a; , wireless telephone 1
3 is a location registration button for registering location information such as the wireless zone in which it is located in the subscriber file 115bl2 of the radio line control device 11; This is a PB/DP changeover switch (SW) for selection.

138a, as shown in FIG. 5(a), the connection state of the wireless telephone, the number of the connected wireless connection device 12, the system number (SMS-ID) of the connected wireless line control device 11, This is a wireless line connection file in which various data such as a connection sequence with the wireless connection device 12 and a control signal with the wireless connection device 12 are stored.

As shown in FIG. 5(b), 138b is a wireless telephone ID file in which the identification number (R-ID) of the wireless telephone 13 is stored, and 138C is a wireless telephone ID file, as shown in FIG. 5(c). The number of the wireless zone where the wireless telephone 13 is located (
Wireless zone number file in which location information) is stored, 13
8d is a speed dial file in which speed dial numbers and dial codes are stored in correspondence, as shown in FIG. 5(c);
As shown in FIG. 5(e), 138e is a dial file in which the dial number (two pairs of dial codes) inputted last time using the dial key 133 is stored.

The members 130 to 138e are housed in a portable casing in the case of a cordless telephone, and in a casing that can be installed in a center console or the like of a car in the case of a car phone.

Next, the operation of the embodiment according to the above configuration will be explained.

(1) Location Registration from Wireless Telephone 13 First, the operation when registering the wireless zone in which the wireless telephone 13 is located will be explained.

When the location registration switch 135 of the wireless telephone 13 is pressed, the control unit 130 turns on the wireless transceiver 131,
A position record request signal and the identification number of the radio telephone operator 3 stored in the radio telephone ID file 138b are sent via the radio transceiver 131 according to the control sequence and control signal of the radio line connection file 138a.

This signal is received by the wireless connection device 12 of the control station in each wireless zone via each wireless transmitter/receiver 131 at different levels depending on the wireless zone in which the wireless telephone 13 is located. The control unit 120 encodes the reception level of the signal from the wireless telephone 13, and controls the control seed () of the wireless line connection file 125a.
Second, the transmission path with the wireless line connection device 11 is made into a closed loop, and the location registration request signal, identification number, and reception level code are sent to the control signal transceiver 123 and the line interface 1.
22 to the radio line controller 11 to open a loop.

Here, the reception level is, for example, 20 dB or less, 20 to
40 dB, 40 to 60 dB, and 60 dB or more are encoded into 2-bit data of "00", "01", "10", and "11", respectively. Of course, if the signal is encoded into 3 bits or more, the reception level can be differentiated into 8 or more levels.

When the control unit 110 of the wireless line control device 11 receives the location registration request signal, identification number, and encoded data indicating the reception level via the wireless line interface 113, it decodes the encoded data and then compares the reception levels from each wireless connection device 12. do.

The control unit 110 selects location information such as the wireless zone with the highest reception level or the identification number of the wireless connection device 12, and stores the selected location information in the location information storage area of the subscriber file 125b.

Note that if the compared reception levels are the same, the smallest number or the largest number, or the number of the wireless zone or wireless connection device 12 input first or last may be registered.

When the location registration is completed as described above, the control unit 110 reverses the line voltage and sends a location registration completion signal to the wireless connection device 12 that received the maximum level signal. In this case, the location registration completion signal is not sent to wireless connection devices other than the wireless connection device that received the maximum level signal. The wireless connection device 12 that has received the location registration completion signal converts this signal and the number of the wireless zone into a wireless signal, and transmits the signal to the wireless telephone 1.
Send to 3.

The wireless telephone 13 handset the location registration completion signal)
132a's receiver or speaker, or by flashing a light emitting diode, etc., and also informs the caller of the wireless zone identification number of the wireless connection device 12 that sent the response, that is, the location registration completion signal. It is registered in the wireless zone number file 138c.

Next, the wireless telephone 13 sends a location record confirmation signal to its wireless connection device 12, which wireless connection device 12 sends its location registration confirmation signal to the radio line control device 11, and the radio line control device 11 completes the loop. Depolarize.

It should be noted that from the wireless connection device 12 described above to the wireless line control device 11
Instead of sending a special signal, the location registration request signal may be notified by opening/closing a track loop. Further, the location registration completion signal from the radio line control device 11 to the radio connection device 12 may also be notified by reversing the line voltage, or the radio telephone 13 may be notified directly by a tone signal or by transmitting this tone signal as a code signal. It may also be sent.

(2) Receiving a call to the radio telephone 13 Next, the operation when receiving a call to the radio telephone 13 via the radio line control device 11 will be explained.

When a call arrives at, for example, extension 13
Access 10.

The control unit 110 reads the wireless zone in which the wireless telephone (13X1) is located from the subscriber file 115b, and sends the identification number of the wireless telephone (13X1) and a call control signal to the control station of the wireless connection device 12 located in the wireless zone. Send out.

In this case, the control unit 110 controls the matrix switch 11
4 to connect the control station (two-pair radio line interface 113 and the received station line interface 111) of the wireless connection device 12 in that wireless zone.

The control unit 120 of the wireless connection device 12 receives the above call control signal etc. via the line interface 122 and the control signal transmitter/receiver 123, and transmits the call control signal etc. to the wireless line connection file 12.
A wireless radio telephone (13
X1) generates an identification number signal and a call control signal;
It is transmitted via the wireless transceiver 121.

When the wireless telephone 13 receives the signal of the identification number of the wireless telephone (13X1) and the call control signal via the wireless transceiver 131, it compares the received identification number with the identification number of the wireless telephone ID file 138b, and selects a matching wireless telephone. The control unit 130 of the telephone 13 turns on the transmitting/receiving unit 132, and the transmitting/receiving unit 132 generates an audio signal for calling based on the calling control signal from the wireless connection device 12.

Therefore, the calling signal from the existing exchange 10 is sequentially sent in the form of specific signals to the radio telephone (13X1) via the radio line control device 11 and the control station of the radio connection device 12, and when the radio telephone (13X1) goes off-hook. , a communication path is established between the calling side telephone and the wireless telephone (13X1).

(5) Missed call In the above call, the wireless telephone (13X1) moves outside the wireless zone registered in the subscriber file 115b of the wireless line control device 11, and
If the location registration button 135 in 1) is not operated and the new wireless zone is not registered in the subscriber file 115b, even if the wireless connection device 12 sends out a call control signal, the radio waves will not be transmitted to the wireless telephone (13X1). The wireless telephone (13X1) cannot be called because it cannot be reached.

Hereinafter, the operation of absentee calling according to the present invention will be explained with reference to FIG.

As described above, when a call arrives at extension 13X1, for example, the radio line control device 11 reads the wireless zone where the wireless telephone (13X1) is located from the subscriber file 115b, and controls the wireless connection device 12 located in that wireless zone. Sends the identification number of the wireless telephone (13X1) and a call control signal to the station.

The control unit 120 of the wireless connection device 12 receives the call control signal via the line interface 122 and the control signal transmitter/receiver 123, and transmits the call control signal to the wireless line connection core coil 125.
A wireless radio telephone (13X
1) The identification number and call control signal are generated and transmitted via the wireless transceiver 121.

The control unit 110 of the wireless line control device 11 performs a call control signal within a predetermined period of time (for example, within 1.6 seconds to 2 seconds) after sending the call control signal.
If there is no incoming call response signal from the wireless telephone (13
Sends call control signals, etc. to

Calls to all wireless zones are made at the same timing.

FIG. 6 shows a case where a call control signal and the like are sent out at the same timing to the wireless connection devices 12 (control stations) (two) in each of the wireless zones z1, Z2 to zn.

Therefore, the wireless connection device 1 placed in each wireless zone
2 sends a call control signal, and the wireless telephone (13X1
) can receive call control signals and the like as long as it is located within the service area of this wireless telephone device.

In this method, since calls are made to all service areas at the same time, the desired wireless telephone can be called at an early stage.

This method may also be provided as a service function for a specific predetermined radiotelephone, distinguishing it from general radiotelephones. For example, it can be a service function for VIPs.

Therefore, according to the above embodiment, the wireless telephone 13 moves outside the wireless zone registered in the subscriber file 115b of the wireless line control device 11, and the location registration button 135 of the wireless telephone 13 is not operated. Even if the new wireless zone is not registered in the subscriber file 115b, the wireless telephone 13 can be called.

Further, the present invention provides a location registration button 13 of the wireless telephone 13.
For example, the wireless connection device 12 sends out its location information, and the wireless telephone 13
is temporarily turned on to prevent power consumption, receives this location information, compares it with the location information in the wireless zone number file 138c, and if it differs, the wireless line controller 1
The present invention can also be applied to the case of rewriting the registered location information of the subscriber file 115b of No. 1.

In addition, when the wireless telephone (13
If you configure the configuration so that it is rewritten to , you can make a normal call the next time you receive a call.

(4) Calling from the radio telephone 13 Next, the operation when making a call from the radio telephone 13 to a central office line or another radio telephone 13 will be explained.

When the wireless telephone 13 is off-hook, the hook switch 13
4 is turned on, the control unit 130 generates a calling signal based on the connection density and control signal of the wireless line connection file 138a, and also generates a calling signal using the wireless zone number file 138c.
The identification number of the wireless zone in which the file is currently located is added and transmitted via the wireless transceiver 131.

The control unit 120 of the control station of the wireless connection device 12 in each wireless zone compares the identification number of its own wireless zone in the station data file 125b, and the control unit 120 of the control station whose identification number matches the wireless telephone 13. It sends a call response signal and a signal specifying a communication channel to the communication channel, switches to the communication channel, and the wireless connection device becomes a communication station.

When the control section 130 of the radio telephone 13 sends out a channel switching signal, the wireless connection device 12 closes the loop with the radio line control device 11, and the control section 130 of the radio telephone 13 transmits a channel switching signal to prevent interference with an adjacent wireless zone. If there is no interference detection completion signal, a calling signal is sent to the wireless line control device 11. Upon receiving the calling signal, the radio line control device 11 closes the subscriber line and sends out the calling signal.

Next, the control unit 110 of the office line line control device sends a call response signal to the wireless connection device 12, and the voice control unit 1
24 and sends an audio circuit activation signal to the radio telephone 13.

The control section 130 of the radio telephone 13 turns on the transmitter/receiver section 132 in response to the audio circuit activation signal.

Therefore, the dial tone sent from the existing exchange 10 to the wireless telephone 13 via the closed loop is reproduced into voice by the receiver of the hand 7) 132a, and the caller is informed of the closed loop with the existing exchange 10. can.

Next, when the dial number is input from the dial key 113, the control unit 130 of the wireless telephone 13 converts it into a dial code and sends a signal indicating the dial signal method set by the PB/DP changeover switch 136 (for example, PB
A double signal rOJ and a double signal DP (“1”) are added and sent to the wireless connection device 12.

The wireless connection device 12 converts the signal C2 indicating the dial signal system into a dial code, or a dial signal of the P signal system or the PB signal system, and sends it to the existing exchange 10 via the above-mentioned closed loop.

The existing exchange 10 sends a ring pack tone to the wireless connection device 12 via the closed loop, and the wireless connection device 12
converts the ringback tone into the radio signal and sends it to the radio telephone 13, and when the telephone on the called side responds, a call is established.

DETAILED DESCRIPTION OF THE INVENTION As described above, in the present invention, when an incoming call is received, a wireless line control device calls a wireless connection device via a wireless connection device placed in a pre-registered wireless zone, and calls the wireless telephone within a predetermined time. Since the configuration is configured so that if there is no response from the wireless telephone, the wireless telephone will be called through the wireless connection device placed in each wireless zone, so even if the wireless telephone moves outside the registered wireless zone, the wireless telephone will not receive a response. can be called.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing one embodiment of the wireless telephone device according to the present invention, FIG. 2 is a detailed block diagram of each device of the wireless telephone device of FIG. 1, and FIG. 1 and 2, FIG. 4 is an explanatory diagram of each file of the wireless connection device in FIGS. 1 and 2,
FIG. 5 is an explanatory diagram of each file of the radio telephone device shown in FIGS. 1 and 2, and FIG. 6 is a timing chart for explaining the operation of the radio telephone device shown in FIGS. 1 and 2. . 11...Radio line control device, Engineering 2...Wireless connection device, 13...Wireless telephone, 110.120.130...
- Control unit, 114... Matrix switch, 115
a... System Finobe 115b... Subscriber file, 115e... Line connection file, 121,1
31...Radio transceiver, 125a, 138a...Wireless line connection file 125b...Station data file, 138b...Wireless telephone identification number (ID) file, 138c...Wireless zone number file. Name of agent: Patent attorney Toshio Nakao (1 person)°°
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Claims (1)

[Claims] a plurality of wireless connection devices each arranged in a different wireless zone and performing wireless communication with a wireless telephone located in the wireless zone; a storage means in which data of the wireless zone in which the wireless telephone is located is stored; Calling the wireless telephone via a wireless connection device located in a wireless zone of data stored in the means, and if there is no response from the wireless telephone within a predetermined time, the wireless connection device located in each wireless zone is called. and a radio line control device having means for calling the radio telephones all at once.