JPH05244086A - Radio telephone system - Google Patents

Abstract

PURPOSE:To issue a response for a position registration signal from a cellular base station even when a slave set is set in a cordless communication mode. CONSTITUTION:A master set is provided with a cellular transmission part 105 capable of transmitting a signal to the cellular base station and a cellular reception part 106 capable of receiving the signal from the cellualr base station, and when the slave set is located in a cordless communication zone and also, the master set receives the position registration signal from the cellular base station, the master set issues the response to the cellular base station instead of the slave set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiotelephone device which can be used as a cordless telephone within the coverage area of a cordless telephone base unit and as a cellular telephone within the coverage area of a cellular telephone.

[0002]

2. Description of the Related Art In recent years, a cellular telephone device capable of making a call anytime, anywhere and a cordless telephone using a radio have been used instead of a cord between a telephone body and a handset.

A conventional radio telephone device will be described below with reference to the drawings. FIG. 2 is a block diagram showing a basic configuration of a conventional base unit of a wireless telephone device. In FIG. 2, 101 is a telephone line, 102 is a telephone line connection unit for connecting with a telephone line to form an interface, and 103 is A cordless transmitter for transmitting to the slave, 104 is a cordless receiver for receiving from the slave, 107 is an antenna,
Reference numeral 108 is a voice circuit, 109 is a data processing unit, 110 is a microphone, 111 is a speaker, and 112 is a control unit.

FIG. 3 is a block diagram showing the basic configuration of a conventional wireless telephone device slave unit that wirelessly communicates with a master device and cellular base station with a wireless base station. In FIG. 3, 301 is a cordless transmitter for transmitting to the base unit, 3
02 is a cordless receiving unit for receiving a signal from the base unit, 303 is a cellular transmitting unit for transmitting to a cellular base station, 304 is a cellular receiving unit for receiving a signal from the cellular base station, and 305 is a transmitting unit. Common section, 306 common reception section, 307 switching section, 308 antenna, 30
Reference numeral 9 is a second voice circuit, 310 is a data processing unit, 311 is a wireless communication detecting unit for detecting whether or not a cordless telephone is within a communicable range by exchanging an ID code with a base unit, 312. Is a microphone, 313 is a speaker, 314
Is a control unit. In addition, the transmission sharing unit 305 and the reception sharing unit 306 are portions shared for cordless and cellular transmission and reception in order to reduce the size and weight of the slave unit. In the cordless communication mode, the switch 307 is The transmission sharing unit 305 and the cordless transmitting unit 301 are connected, and the reception sharing unit 306 and the cordless receiving unit 302 are connected. On the other hand, in the cellular communication mode, the switch 307 is the transmission sharing unit 305.
The cellular transmission unit 303, the reception sharing unit 306, and the cellular reception unit 304 are connected to each other, and cordless communication and cellular communication cannot operate simultaneously.

With respect to the conventional radiotelephone device including the above components, the relationship and operation of each component will be described below. First, the ID code exchange in the cordless communication mode will be described.

In the cordless communication mode, the control unit 314 of the cordless handset controls the switching unit 307 and the cordless transmission unit 3
01, transmission sharing unit 305, and cordless reception unit 302
And the reception common unit 306 are connected, and a standby state for the second frequency f ₂ from the master unit is established.

The master unit controls the data under the control of the control unit 112.
In the processing unit 109, the locations of the slave unit to which the master unit belongs and other master units
ID code information is generated to identify the slave unit to which it belongs.
Through the cordless transmitter 103 and antenna 107
Radio waves in the air (second frequency f ₂) Fire. The child machine is Anne
Tena 308, cordless receiver 302, shared reception unit 30
6, including ID code information via the data processing unit 310
Fourth frequency f_FourReceived electric field
The strength is measured by the wireless communication detection unit 311, and the cordless telephone
The control unit 3 determines whether or not the wireless telephone communication is possible.
14 and notifies the master unit of a response signal to the ID code information.
By sending back the
Confirm that they exist in the area.

Next, the operation of receiving a call from the telephone line 101 in the cordless communication mode will be described. When the telephone line connection unit 102 of the parent device detects an incoming call from the telephone line 101, the telephone line connection unit 102 notifies the control unit 112, and the control unit 112 causes the data processing unit 109, the cordless transmission unit 103, and the antenna 10 to operate.
A call-in signal (second frequency) is transmitted to the child device via 7. The slave unit receives the second frequency f ₂ at the antenna 308 and the cordless receiving unit 302, the control unit 314 detects the incoming call via the reception sharing unit 306 and the data processing unit 310, and then the microphone 312 and the voice circuit. 309, transmission common unit 30
5, the frequency f ₁ is emitted into the air through the cordless transmitter 301 and the antenna 308, and the master unit receives the first frequency f ₁ at the antenna 107 and the cordless receiver 104, and the voice circuit 108 and the telephone line connection unit. 102, telephone line 101
Via the telephone line 101 and the telephone line connection unit 10
2, the second frequency f ₂ is emitted into the air through the voice circuit 108, the cordless transmitter 103, and the antenna 107, the antenna 308 and the cordless receiver 302 receive the second frequency f ₂ , and the reception common unit 306. , A voice circuit 309 and a speaker 313 are used to perform a two-way conversation with a caller of a telephone line.

Next, the cellular in the cellular communication mode
Explain ID code exchange with a base station (not shown)
It When in the cellular communication mode, the control unit 314 of the child device
The switching unit 307 is controlled so that both the cellular transmission unit 303 and the transmission unit
Reception unit 305, cellular reception unit 302, and reception common unit 3
06, and the fourth frequency f from the cellular base station _Four
Will be in the standby state.

The cellular base station periodically or randomly transmits position registration information in order to detect whether or not the slave unit exists within the communication range of the cellular base station. The slave unit has an antenna 308, When the cellular reception unit 304 receives the fourth frequency f ₄ and receives the radio wave f ₄ including the cellular ID code information via the reception sharing unit 306 and the data processing unit 310, the cellular base station responds to the cellular ID code information. By sending back the response signal, the cellular base station confirms that the slave unit exists within the cellular communication range by receiving the response signal.

Next, the incoming call operation of the cellular phone in the cellular communication mode will be described. The slave unit has an antenna 30.
8, when the incoming signal from the cellular base station is received via the cellular reception unit 304, the reception sharing unit 306, and the data processing unit 310, the control unit 314 is notified, and then the microphone 3
12, the voice circuit 309, the transmission sharing unit 305, the cellular transmission unit 303, the antenna 308, and the third frequency f ₃
Also, bidirectional conversation is performed with the caller of the cellular telephone at the fourth frequency f ₄ via the antenna 308, the cellular reception unit 304, the reception sharing unit 306, the voice circuit 309, and the speaker 313.

[0012]

However, in the above-mentioned conventional radiotelephone device, in the cordless communication mode, even if the cellular base station transmits the position registration signal, the position registration signal from the cellular base station is transmitted to the antenna. Although it reaches the cellular receiver 304 via 308, the switch 3
No. 07 connects the cordless reception unit 302 and the reception common unit 306, so that the cellular reception unit 304 and the reception common unit 3 are connected.
06, and therefore the control unit 314 cannot detect that there is a location registration signal from the cellular base station,
Since the cellular base station does not return a response signal to the signal, the cellular base station has a problem that it determines that the mobile device is not within the communicable range and does not notify the mobile device of an incoming call from a third party. It was

In addition, if the transmission common unit 305 and the reception common unit 306 are separately mounted without being shared between the cordless communication and the cellular communication, the cordless communication and the cellular communication can be simultaneously performed. There are problems that the handset becomes larger, heavier, and power consumption increases.

An object of the present invention is to solve the above problems and to provide a radiotelephone device capable of performing a position registration operation with a cellular base station even when a slave unit is in a collarless communication mode.

[0015]

In order to achieve the above object, the present invention provides a base station with a cellular receiver capable of receiving a position registration signal from a cellular base station and a cellular transmitter capable of transmitting a signal to the cellular base station. Parts are added.

[0016]

According to the present invention, in the above structure, the master unit monitors the position registration signal from the cellular base station, and if there is a position registration signal from the cellular base station to the slave unit, the master unit takes the place of the slave unit. By transmitting a response to the location registration signal to the cellular base station by cellular communication, it is notified that the child device exists within the communicable range of the cellular base station.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram showing a basic configuration of a base unit of a wireless telephone device according to the present invention. In FIG. 1, 101 is a telephone line, and 102 is a telephone line connection for connecting with a telephone line to form an interface. Section, 103 is a cordless transmitting section for transmitting to a slave, 104 is a cordless receiving section for receiving a signal from the slave, 105 is a cellular transmitting section for transmitting to a cellular base station, and 106 is a cellular base station. A cellular receiver for receiving signals from
Reference numeral 07 is an antenna, 108 is a voice circuit, 109 is a data processing unit, 110 is a microphone, 111 is a speaker, 112 is a control unit, and 113 is a storage unit.

With respect to the radiotelephone device including the above components, the relationship and operation of each component will be described below. Both the cordless communication mode and the cellular communication mode can operate simultaneously in the master unit, and the cordless communication mode and the cellular communication mode cannot simultaneously operate in the slave unit.

First, the ID in the cordless communication mode
Code exchange will be described. In the cordless communication mode, the control unit 314 of the slave unit controls the switching unit 307 to connect the cordless transmission unit 301 and the transmission common unit 305, and the cordless reception unit 302 and the reception common unit 306, and to connect the second unit from the master unit. The standby state of the frequency f ₂ is set.

Under the control of the control unit 112, the master unit causes the data processing unit 109 to generate ID code information for identifying a slave unit to which the master unit belongs and a slave unit to which another master unit belongs, and the cordless transmission is performed. Radio waves of the second frequency f ₂ are emitted into the air through the unit 103 and the antenna 107. The slave unit is an antenna 308, a cordless receiver 302, a reception common unit 30.
6, when the radio wave of the fourth frequency f ₄ including the ID code information is received via the data processing unit 310, the received electric field strength is measured by the wireless communication detection unit 311 and the range in which the wireless communication of the cordless telephone is possible It is determined whether it is inside, and the control unit 31
No. 4 is notified and a response signal for the ID code information is sent back to the master unit to confirm that the master unit and the slave unit are within the cordless communication range.

Next, the operation of receiving a call from the telephone line in the cordless communication mode will be described. The telephone line connection unit 102 of the parent device notifies the control unit 112 when an incoming call is detected from the telephone line 101, and the control unit 112 notifies the data processing unit 1
09, the cordless transmitter 103, and the antenna 107 to transmit an incoming call signal (second frequency f ₂ ) to the slave. The slave unit receives the second frequency f ₂ at the antenna 308 and the cordless receiving unit 302, the control unit 314 detects the incoming call through the reception sharing unit 306 and the data processing unit 310, and then,
Microphone 312, voice circuit 309, transmission sharing unit 305, cordless transmission unit 301, antenna 308, antenna 10
7. The first frequency f ₁ is received by the cordless receiving unit 104, and is transmitted via the voice circuit 108, the telephone line connecting unit 102, and the telephone line 101, and the telephone line 101, the telephone line connecting unit 102, the voice circuit 108, Cordless transmitter 103,
Antenna 107, antenna 308, cordless receiver 3
02, the second frequency f ₂ is received, and the reception sharing unit 306,
Through the voice circuit 309 and the speaker 313, a two-way conversation is performed with the caller of the telephone line.

Next, the ID code exchange with the cellular base station in the cellular communication mode will be described. When in the cellular communication mode, the control unit 314 of the child device operates as the switching unit 307.
To connect the cellular transmission unit 303 and the transmission sharing unit 305, and connect the cellular reception unit 304 and the reception sharing unit 306,
The standby state of the fourth frequency f ₄ from the cellular base station is set.

The cellular base station periodically or randomly transmits a position registration signal to detect whether or not the child device is within the communication range of the cellular base station. When the cellular reception unit 304 receives the fourth frequency f ₄ and receives the radio wave f ₄ including the cellular ID code information via the reception sharing unit 306 and the data processing unit 310, the cellular base station responds to the cellular ID code information. The cellular base station confirms that the slave unit is within the communicable range by sending back the response signal and receiving the response signal.

When the cordless handset is in the cordless communication area, the cordless communication mode is used to notify the telephone number and ID number for identifying each cordless handset relating to the cellular system, and the cordless handset is notified of the information. Is stored in the storage unit 113.

Next, the incoming call operation of the cellular phone in the cellular communication mode will be described. The slave unit notifies the control unit 314 when an incoming call signal from the cellular base station is received via the second antenna 308, the cellular reception unit 304, the reception sharing unit 306, and the data processing unit 310, and then the microphone 312. , The voice circuit 309, the transmission sharing unit 305, the cellular transmission unit 303, and the antenna 308 at the third frequency f ₃ , and the antenna 308 and the cellular reception unit 30.
4, reception common unit 306, voice circuit 309, speaker 31
Two-way conversation with the caller of the cellular telephone at the fourth frequency f ₄ via 3.

Next, the operation of the position registration signal from the cellular base station will be described. The control unit 112 of the parent device receives the location registration signal from the cellular base station via the antenna 107, the cellular reception unit 106, and the data processing unit 109, and detects the location registration signal from the cellular base station to the child device. If the location registration signal is received, the telephone number or ID signal in the location registration signal is compared with the telephone number or ID number of the child device stored in the storage unit 113, and the two are the same and the child If the device and the base unit are within the cordless communication area, the location registration operation with the cellular base station in the cellular communication mode is started. That is, the response signal to the location registration signal is sent back to the cellular base station via the data processing unit 109, the cellular transmission unit 105, and the antenna 107. At this time, the handset does not respond to the location registration signal from the cellular base station even in the cellular communication mode.

Next, the operation of the location registration signal from the cellular base station will be described. When the child device changes from the cellular communication mode to the cordless communication mode, the child device notifies the parent device that the cordless communication mode has been changed to the cordless communication mode, and the controller 112 of the parent device notifies the cellular base station. When the location registration signal from the cellular base station to the slave unit is detected and the location registration signal is received, the location registration signal from the cellular base station is received via the antenna 107, the cellular reception unit 106, and the data processing unit 109. The telephone number or ID number in the position registration signal is compared with the telephone number or ID number of the child device stored in the storage unit 113, and if they are the same, the position registration operation with the cellular base station in the cellular communication mode is performed. To start. Before the cordless communication mode is switched to the cellular communication mode, the cordless handset notifies the master unit that the cordless communication mode is changed to the cellular communication mode. During
The response to the position registration signal from the cellular base station is interrupted.

[0029]

As is apparent from the above description of the embodiments, according to the present invention, the base unit monitors the position registration signal from the cellular base station and sends it from the cellular base station to the handset belonging to the base unit. When the slave unit is in the cordless communication area, it responds to the position registration signal on behalf of the slave unit, reducing the volume, weight and power consumption of the slave unit. can do. Further, even when the slave unit is in the cordless communication mode, it becomes possible to respond to the location registration signal from the cellular base station.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a base unit of a wireless telephone device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a basic configuration of a conventional wireless telephone device master unit.

FIG. 3 is a block diagram showing a basic configuration of a conventional wireless telephone device slave unit.

[Explanation of symbols]

 101 telephone line 103 first cordless transmitter 104 first cordless receiver 105 first cellular transmitter 106 first cellular receiver

Claims (4)

[Claims] 1. A master unit connected to a telephone line, and wirelessly linked to the master unit by using a first frequency for transmission to the master unit and a second frequency for reception from the master unit. And a cordless receiver that receives the second frequency from the master unit, and a third frequency to the cellular base station. And a cellular reception unit that receives a fourth frequency from a cellular base station, and the master unit has a cordless transmission unit that transmits the slave unit at the second frequency, and The base unit is composed of a cordless receiving unit that receives the first frequency, a cellular transmitting unit that transmits the fourth frequency to the cellular base station, and a cellular receiving unit that receives the third frequency from the cellular base station. The third transmitted by the base station It monitors the frequency, detects the position registration signal from the cellular base station to the slave unit belonging to the master unit, and the slave unit and the master unit are within the communication range using the first frequency and the second frequency. If present in the wireless telephone device, the third frequency and the fourth frequency are used to respond to the location registration signal to the cellular base station on behalf of the slave unit. 2. When the slave unit is in a standby mode of the second frequency or in a communication mode using the first frequency and the second frequency, the master unit transmits data by the cellular base station. Monitoring the third frequency, and using the third frequency and the fourth frequency when detecting the location registration signal sent from the cellular base station to the slave belonging to the master. 2. The radiotelephone device according to claim 1, wherein the radiotelephone device responds to the cellular base station instead of the slave unit. 3. A cordless communication in which a slave unit communicates using the first frequency and the second frequency from a cellular communication mode in which the slave unit communicates using the third frequency and the fourth frequency. The wireless telephone device according to claim 2, wherein when the mode is switched to, the base unit is notified of the switching to the cordless communication mode. 4. When the slave unit switches from the cordless communication mode to the cellular communication mode, the slave unit notifies the master unit of switching to the cellular communication mode, and the master unit while the slave unit is in the cellular communication mode. 3. The wireless telephone device according to claim 2, wherein the response to the location registration signal transmitted by the cellular base station is interrupted.