JPH04127728A - Portable telephone set - Google Patents

Abstract

PURPOSE:To attain a call even at a place, where radio waves are not reached from a radio base station, by repeating radio waves so as to transmit/receive them. CONSTITUTION:At a place such as an outdoor place or the like where the radio waves can be easily reached from the base station, a master set 1 and a slave set 2 are integrated and connected by connectors 12 and 15 so as to use the portable telephone set completely similarly to the conventional one. On the other hand, when using the telephone set at a place such as an indoor place or the like where the radio waves are hardly reached from the base station, the set 1 and the set 2 are separated and the set 1 is installed at a place by the window or the like where the radio waves are easily reached so as to operate the set 1 as a repeater. Thus, the portable telephone set can be used even at a place where the conventional one can not be used.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a mobile phone, and more particularly to a mobile phone configured to be able to transmit and receive radio waves by relaying them. Wireless communication is performed between mobile phones and wireless base stations installed every kilometer, and the wireless base stations are connected to general telephone lines via mobile phone exchanges, allowing communication between mobile phones and general telephones. It is a system for making calls between the two. Conventional mobile phones of this type are configured so that the mobile phone directly receives radio waves from a wireless base station, and conversely, directly transmits radio waves from the mobile phone to the wireless base station.

[Problem to be solved by the invention]

In this way, conventional mobile phones transmit and receive radio waves directly to and from wireless base stations, so when the mobile phone is moved to a place where the radio waves from the wireless base station cannot reach, such as indoors, Wireless connection with the wireless base station becomes impossible,
There is a problem with not being able to make calls.

An object of the present invention is to provide a mobile phone that allows telephone calls even in places where radio waves from a wireless base station cannot reach.

[Means for Solving the Problems] The mobile phone of the present invention is composed of a base unit and a slave unit, each of which can be used independently or in an integrated state. Then, the base unit has a first terminal that performs wireless communication with the base station.
There is no connection between the base unit transmitter/receiver and the slave unit! The main unit is equipped with a second base unit transmitting/receiving unit that performs communication, and the slave unit is equipped with a slave unit transmitting/receiving unit that performs wireless communication with the base unit, and the base unit and the slave unit are integrated. When the handset transmitter/receiver is
It is configured to be switched and connected to the base unit transmitter/receiver.

In this case, the frequency of the first base unit transmitting/receiving unit is made different from the frequencies of the second base unit transmitting/receiving unit and the slave unit transmitting/receiving unit.

[Effect]

According to the present invention, the base station and the slave unit are separated in a place where radio waves cannot reach, and the base unit is installed in a place where the radio waves can reach, and this is relayed to enable communication between the base station and the slave unit. . In addition, in areas where radio waves can reach, the base unit and slave unit can be integrated and used like a regular mobile phone.

[Example] Next, the present invention will be explained with reference to the drawings.

FIGS. 1(a) and 1(b) are external perspective views of an embodiment of the present invention. As shown in these figures, the mobile phone is
It consists of a base unit 1 and a slave unit 2 that can be separated. The base unit 1 has an antenna 11 and a connector 1 used for connection with the slave unit 2.
2 is provided. The handset 2 also includes an antenna 21, a microphone 22 and a speaker 23 for transmitting and receiving, and an operation key 24.
A connector 25 (shown in FIG. 2) used for connection with the base unit 1 is provided. As shown in FIG. 1(a), these master unit 1 and slave unit 2 can be integrated by a connecting mechanism (not shown) after connecting their respective connectors 12 and 25, or as shown in FIG. By releasing the connection mechanism as in b), the two can be separated and each can be used independently.

FIG. 2 is a block diagram showing the internal configuration of the mobile phone shown in FIG. 1.

The handset 2 includes a microphone 22 and a speaker 23, a handset transmitter/receiver 26, an antenna 21 connected to the handset transmitter/receiver 26, a connector 25 used for connection to the base unit 1, and the microphone 22 and A switching unit 27 that switches the speaker 23 between the handset transmitting/receiving unit 26 or the connector 25
and a control section 28 that controls the handset transmitting/receiving section 26, switching section 27, and the like.

Base unit 1 also includes antenna 11, first and second base unit transmitting/receiving units 13.14, and antenna 11 for common use by these first and second base unit transmitting/receiving units 13.14. An antenna duplexer 15, a connector 12 used for connection with the child unit 2, a switching unit 16 that switches the first base unit transmitting/receiving unit 13 between the connector 12 or the second base unit transmitting/receiving unit 14, and control thereof. The control unit 17 is configured to perform the following operations.

The first base unit transmitting/receiving unit 13 is configured to be capable of wireless communication with a base station (not shown), and the second base unit transmitting/receiving unit 14
is configured to be capable of wireless communication with the handset transceiver section 26.

In a mobile phone configured in this way, as shown in the schematic diagram in Figure 3, in places where radio waves from the base station can easily reach, such as outdoors, the base unit I and base unit I are connected as shown in Figure 1 (a). The handset 2 is integrated and both are connected by a connector 12.25. Then, by switching each switching section 16.27 to the side a in FIG. Wireless communication with the base station 3 is possible by using the first base unit transmitting/receiving unit 13.

Thereby, it can be used in exactly the same way as a conventional mobile phone. In addition, at this time, antenna 1 of base unit L
1 is used, and the antenna 21 of the handset 2 is stored inside the main body.

On the other hand, when using it in a place where radio waves are difficult to reach, such as indoors, the base unit 1 and slave unit 2 are separated as shown in Figure 1 (b), and the base unit 1 is placed in a place where radio waves can easily reach, such as near a window. put it on. At this time, the switching units 16 and 27 of the master device 1 and the slave device 2 are respectively switched to the side b in FIG. 2. Therefore, the input from the microphone 22 of the handset 2 is transmitted from the handset transceiver section 26 to the antenna 2.
The signal is transmitted to the base unit 1 via the weak radio wave 1, low power radio wave, etc., via the base unit 1, and is received by the second base unit transmitting/receiving unit 14 via the antenna 11 and the antenna duplexer 15.

Furthermore, via the switching unit 16, the antenna duplexer 15. It is transmitted to the base station 3 via the antenna 11. On the other hand, radio waves from the base station 3 are relayed to the base unit 1 in the reverse procedure and are output from the speaker 23 of the slave unit 2.

Note that the antenna 11 of the base unit 1 is preferably configured to be movable so that it is convenient when placed near a window or the like.

FIG. 4 shows a call connection flow of the mobile phone according to the embodiment shown in FIG. In this embodiment, the relay between the handset and the base uses one control channel and several communication channels.

(a) The mobile transmitter transmits a transmission signal to the master station on the control channel,
The master station transmits a transmission signal to the base station.

When an acceptance of the call is returned from the base station, the master station selects a channel that is not in use in the surrounding area and designates it as a slave unit. After that, the master station sends a line test tone to the specified communication channel, and the handset sends the tone back, and after confirming that the specified communication channel is usable, starts the communication.

(b) When the base unit receives an incoming signal from the mobile terminating base station, the base unit sends the incoming signal to the slave unit on the control channel, and the slave unit also returns an incoming response to the base unit on the control channel. When the base station receives an incoming call response from the handset, the base station selects a call channel and uses the control channel to specify the call channel to the handset. After that, just like when making a call from a mobile device, you can start a call after testing the line.

(C) After the mobile device ends the call, the handset sends a call end signal using a tone outside the voice band of the current call channel, then ends the call and returns to the control channel.

The base unit transmits a call termination signal to the base station, and the base station returns a call termination confirmation signal to the base unit to terminate the call.

(d) When a call termination signal is received from the fixed call termination base station, the base unit transmits a disconnection command to the slave unit using a tone outside the voice band of the communication channel in progress, then terminates the call and returns to the control channel. When the handset receives the disconnection command, it speaks and returns a disconnection confirmation to the master station on the control channel.

〔Effect of the invention〕

As explained above, the present invention allows the base unit and handset to be integrated in areas where radio waves can reach and can be used like a normal mobile phone, while the base unit and handset can be used in areas where radio waves cannot reach. By separating the base unit, installing it in a place where radio waves can reach, and having it function as a repeater, it is possible to use a mobile phone even in places where conventional mobile phones cannot be used.

[Brief explanation of the drawing]

1(a) and 1(b) are perspective views showing different usage patterns of an embodiment of the mobile phone of the present invention, FIG. 2 is a block diagram showing the internal configuration of the mobile phone of FIG. 1, and FIG.
The figure is a schematic diagram showing a usage pattern, and FIG. 4 is a diagram showing a call connection flow. ■...Base unit, 2...Slave unit, 3...Base station, 11...
. . . Antenna, 12 . . . Lid, 13 . . .
Antenna duplexer, 16... Switching unit, 17... Control unit, 21... Antenna, 22... Microphone, 23...
Speaker, 24...Operation key 25...Connector, 2
6... Handset transmitting/receiving section, 27... Switching section, 28...
control section. Figure Figure

Claims (1)

[Claims] 1. Consisting of a base unit and a slave unit that can be used independently or in an integrated state, and the base unit includes a first base unit transceiver unit that performs wireless communication with a base station. and a second base unit transmitting/receiving unit that performs wireless communication with the slave unit, and the slave unit is equipped with a slave unit transmitting/receiving unit that performs wireless communication with the base unit, and the slave unit is equipped with a second base unit transmitting and receiving unit that performs wireless communication with the base unit. 1. A mobile phone characterized in that, when integrated, a handset transmitting/receiving section is configured to be switched and connected to a first base transmitting/receiving section. 2. The mobile phone according to claim 1, wherein the frequency of the first base transmitter/receiver is different from the frequencies of the second base transmitter/receiver and the handset transmitter/receiver.