JP2002125269A - Portable telephone device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform direct communication between portable telephone devices in a short-range regardless of whether a base station is positioned inside or outside a zone. SOLUTION: This portable telephone device is provided with a first receiving circuit 5 for receiving a signal from a base station, a second receiving circuit 6 for receiving a signal from the other portable telephone device in a transceiver mode, a first transmitting circuit 7 for transmitting a signal to the base station, a second transmitting circuit 8 for transmitting a signal to the other potable telephone device as the base station, and a deciding circuit 9 for detecting that the signal is transmitted by the other portable telephone system as the base station. This portable telephone system is provided with a portable telephone mode for performing inter-arbitrary portable telephone communication by interposing the base station the transceiver mode for performing the communication without interposing any base station.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone device which enables communication between portable telephone devices and increases convenience.

[0002]

2. Description of the Related Art In some cases, portable telephone devices are used for communication between automobiles when acting as a group. In this case, communication must be performed through the service of the base station even at a very short distance.

[0003]

As described above, since the mobile telephone device must perform communication through the service of the base station, if the mobile phone device is out of the service area of the base station,
Even if the distance between cars is extremely short, communication between mobile phone devices is impossible.

[0004] An object of the present invention is to provide a portable telephone device which enables communication between portable telephone devices regardless of the service area of the base station and outside the service area even under such a situation, thereby increasing convenience. It is in.

[0005]

SUMMARY OF THE INVENTION The present invention provides a broadband CD.
In a mobile phone device of the MA system, a terminal device has the same function as a base station, and performs communication between a mobile phone mode with an existing base station and any mobile phone device without an existing base station. A transceiver mode is provided to enable communication between mobile phone devices regardless of the service area of the existing base station or outside the service area.

Further, the present invention provides a first receiving circuit for receiving a signal from a base station and a second receiving circuit for receiving a signal from another portable telephone device in a transceiver mode for performing direct communication between portable telephone devices. A receiving circuit, a first transmitting circuit for transmitting a signal to the base station, a second transmitting circuit for transmitting a signal to another portable telephone device in the transceiver mode, and the other portable telephone device in the transceiver mode in the standby state If it is detected that the call is being transmitted, if the call is directed to itself, the first receiving circuit and the first transmitting circuit are invalidated and communication is performed using the second receiving circuit and the second transmitting circuit. A determination circuit for setting the mode to the transceiver mode.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings.

[0008] Generally, a mobile telephone device of the broadband CDMA system synchronizes based on a signal transmitted from a base station, so that the mobile telephone device itself does not transmit a synchronization signal. As shown in FIG. 1, the mobile phone device of the present invention has the same function as the base station in the mobile phone device, so that the mobile phone device 1 that performs outgoing transmission becomes a base station, a signal for establishing synchronization, and a target. Mobile phone device 2
And synchronizes with the surrounding mobile phone devices 2 to 4 so that the target mobile phone device 2 establishes a communication protocol in response to the call, thereby enabling the mobile phone device 1 and the mobile phone device 2 to communicate with each other. An operation as a transceiver mode for performing communication is executed.

Therefore, it is possible to directly communicate between the portable telephone devices in the area where the radio wave of the portable telephone device reaches, regardless of the presence of the base station.

FIG. 2 is a circuit diagram showing an embodiment of the portable telephone device of the present invention. The mobile phone device shown in FIG. 2 includes a first receiving circuit 5 that receives a signal from a base station,
In the transceiver mode, a second receiving circuit 6 for receiving a signal from another mobile telephone device, a first transmitting circuit 7 for transmitting a signal to a base station, and transmitting a signal to another mobile telephone device as a base station And a determination circuit 9 for detecting that another mobile phone device is transmitting as a base station.

A first receiving circuit 5 for receiving a signal from a base station provides a function of a circuit built in a general portable telephone device.

The second receiving circuit 6 has a function of receiving a signal from another portable telephone device acting as a base station in the transceiver mode, and a receiving function as the base station when the second receiving circuit 6 itself operates in the transceiver mode as the base station. Provide a function to perform

The first transmitting circuit 7 for transmitting a signal to the base station is a transmitting circuit in a portable telephone mode, and provides a function equivalent to that of a conventional portable telephone device.

The second transmitting circuit 7 provides a function of transmitting a signal to another portable telephone device as a base station in the transceiver mode.

A determination circuit 9 for detecting that another mobile telephone device is transmitting as a base station determines whether or not the other mobile telephone device is transmitting in the transceiver mode and whether it is transmitting to itself. Provide a function to detect. If it can be detected, a communication protocol is established under arbitrary conditions with the mobile phone device acting as a base station. The detection is performed when the first receiving circuit 5 performs a cell search of the base station.
It detects whether or not the received signal from the discovered base station includes an arbitrary scrambling code prepared as a transceiver mode and a communication request signal for itself. If it is not included, ignore it and connect to the base station in mobile phone mode.

In the portable telephone device according to the present invention, when the determination circuit 9 detects that another portable telephone device is transmitting as a base station in the standby state in the portable telephone mode, if the call is to the self, the base station The communication protocol is established between the portable telephone devices in the transceiver mode by canceling the connection with the portable telephone device. If the call is not for itself, the connection with the base station is kept established.

Next, the operation of the embodiment of the present invention will be described with reference to FIGS.

When a connection is made between portable telephone apparatuses in the portable telephone mode, a base station is interposed between the portable telephone apparatuses.
Performs communication using the first receiving circuit 5 and the first transmitting circuit 7. At this time, the second receiving circuit 6 and the second transmitting circuit 8 are invalidated.

When the transceiver mode is used, the portable telephone device 1 on the side desiring communication transmits a signal using the second transmitting circuit 8 and receives a signal using the second receiving circuit 6. At this time, the first receiving circuit 5 and the first transmitting circuit 7
Is invalid.

The other portable telephone devices 2 to 4 receive this signal in the first receiving circuit 5 and determine in the determining circuit 9 whether the request is a communication request for themselves. A communication protocol is established using the second receiving circuit 6 and the second transmitting circuit 8, and communication is started.

FIG. 1 shows a state in which the portable telephone device 1 is used as a base station and a communication request is made to the portable telephone device 2. In FIG. 1, the mobile phone devices 3 and 4 for which communication has not been requested do not react to the action of the mobile phone device 1 and maintain the mobile phone mode, so that the mobile phone device 1 and the mobile phone device 1 A transceiver mode communication with the telephone device 2 is realized.

[0022]

As described above, the present invention enables communication between portable telephone devices regardless of the service area of the base station and outside the service area, and increases the convenience of the portable telephone device. This is extremely effective practically as an additional function of the mobile phone device.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating functions and operations of a mobile phone device according to the present invention.

FIG. 2 is a circuit configuration diagram showing an embodiment of the mobile phone device of the present invention.

[Explanation of symbols]

 1, 2, 3, 4 Mobile phone device 5 First receiving circuit 6 Second receiving circuit 7 First transmitting circuit 6 Second transmitting circuit

Claims (6)

[Claims] 1. A portable telephone mode function for performing wireless communication through an existing base station and a transceiver mode function for performing communication between arbitrary portable telephone apparatuses without an existing base station. , Within the service area of existing base stations,
A mobile phone device that enables communication between mobile phone devices regardless of outside the service area. 2. A first receiving circuit for receiving a signal from a base station, a second receiving circuit for receiving a signal from another mobile phone device in a transceiver mode for performing direct communication between the mobile phone devices, A first transmitting circuit for transmitting a signal to a base station, a second transmitting circuit for transmitting a signal to another mobile phone device in a transceiver mode, and another mobile phone device transmitting in a transceiver mode in a standby state If it is detected that the call is for itself, the transceiver mode is set to invalidate the first receiving circuit and the first transmitting circuit and perform communication using the second receiving circuit and the second transmitting circuit. And a determination circuit. 3. The portable telephone device according to claim 1, wherein the portable telephone device is used for wideband CDMA wireless communication. 4. The determination circuit detects that the received signal includes an arbitrary scrambling code prepared as a transceiver mode and a communication request signal for itself, thereby enabling another mobile phone device to operate in the transceiver mode. 4. The mobile phone device according to claim 3, wherein the mobile phone device detects that the call is made by the user and that the call is directed to the user. 5. A mobile phone mode function for performing wireless communication with an existing base station interposed and a transceiver mode function for performing communication between arbitrary mobile phone devices without an existing base station. A wireless communication system that enables communication between mobile phone devices using the mobile phone devices regardless of whether the mobile phone is within or outside the service area of an existing base station. 6. The wireless communication system according to claim 5, wherein communication is performed by a wideband CDMA system.