JPH0898242A - Cordless telephone system - Google Patents

Abstract

PURPOSE: To accept incoming calls of both of the public mode and the self- management mode in the self-management mode by monitoring incoming calls of both modes by a self-management base station and converting the incoming signal to a sent-management incoming signal to transmit it to a pocket telephone in the case of an incoming call of the public mode. CONSTITUTION: When a pocket telephone set 3 is set to the self-management mode and is connected to a self-management base station 1, the base station 1 receives an incoming call of the public mode at the time of incoming from a public base station 2 to the telephone set 3. It is discriminated whether this call should be received by the telephone set 3 which the base station 1 takes charge of or not; and if it should be received by this telephone set, the incoming signal is converted to a self-management incoming signal format by an internal signal processing part. The base station 1 transmits the converted signal to the telephone set 3. Thus, the telephone set 3 operated in the self-management mode receives the incoming call of the public mode as if it were terminated by a self-management line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone device, and more particularly to a cordless telephone device capable of communicating in a self-employed mode and a public mode.

[0002]

2. Description of the Related Art In a conventional cordless telephone device capable of communicating in a self-employed mode and a public mode, a handset unit switches modes and only an incoming signal from a self-employed master unit is operated while operating in the self-employed mode. I'm watching. Therefore, when the handset is set to self-employed mode, even if there is an incoming call from the public base station, the handset cannot receive the incoming signal and cannot respond to the incoming signal in public mode. It was Also, while operating in public mode, only the incoming signal from the public base station is monitored, so even if there is an incoming call from the self-employed master unit, the slave unit can receive the incoming signal. No, it cannot respond to incoming signals in self-employed mode.

Further, the self-employed master unit according to the conventional technique has only the self-employed mode and cannot receive or detect an incoming signal in the public mode. Therefore, when the slave unit is set to the self-employed mode, no one notices even if there is an incoming call from the public mode base station, and cannot respond to the incoming signal of the public line.

In order to solve this problem, even if the slave unit side simultaneously monitors and receives the incoming signal in the public mode and the incoming signal in the self-employed mode, both modes have different incoming signal periods and configurations. , Very difficult and expensive equipment.

As described above, the conventional technique has a problem that when the slave unit is set to the self-employed mode, the incoming signal from the public base station cannot be received and the incoming call cannot be answered.

[0006]

As described above, when mobile phones having two modes, the self-employed mode and the public mode, are widespread, and each person has one mobile phone, for example, self-employed at home. If it cannot respond to the incoming signal from the public base station when it is used in the mode, it causes a great inconvenience.

An object of the present invention is to solve such a problem so that the portable handset can respond to an incoming call from the public mode even if the portable handset is set to the self-employed mode.

[0008]

To achieve the above object, the present invention provides a self-employed mode for communicating with a self-employed base station,
A cordless system including a mobile phone having communication means for performing wireless communication in two modes of public mode for communicating with a public base station, and a self-employed base station having communication means for performing wireless communication with the mobile phone set in the self-employed mode. In the telephone device, the private base station is provided with receiving means for receiving a public mode signal from the public base station and means for converting the received public mode signal into a private mode signal, and the private base station performs the conversion. The transmitted signal is transmitted to the mobile phone set to the self-employed mode.

[0009]

According to the present invention, as described above, the public mode signal is received by the private base station, converted into the private mode and retransmitted to the mobile phone. Even if set to, you can answer an incoming call from public mode.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cordless telephone device according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a diagram showing the overall configuration of an embodiment of a cordless telephone device of the present invention.

According to the present invention, the private-use master unit monitors incoming signals in both public and private modes, and if there is a public incoming signal, converts it to a private-use incoming signal and redirects it. By sending to the mobile phone, even if the mobile phone is operating in the self-employed mode, it is possible to receive in both modes.

In FIG. 1, reference numeral 1 is a self-employed base station (base unit),
It is connected to a private telephone line and can communicate with mobile phones that are set to private mode. The mobile phone in the self-employed mode is connected to the self-employed telephone line via the self-employed base unit and can perform operations such as making a call, receiving an incoming call, and making a call.

Reference numeral 2 denotes a public base station, which is connected to a public line and can perform a communication operation with a mobile phone set in the public mode. The mobile phone set in the public mode is connected to a public line through a public base station and can perform operations such as making a call, receiving a call, and making a call.

Reference numeral 3 is a mobile phone (slave unit), which can be internally switched between a self-employed mode and a public mode, and can be used in either one of the modes. It communicates with the public base station when it is used in the public mode, and communicates with the self-employed base unit when it is operating in the self-employed mode.

FIG. 2 is a block diagram of the private-use base station 1.

In the figure, 10 and 11 are radio units, which are internally divided into receiving units 101 and 111 and transmitting units 102 and 112. If you want to receive the incoming signal in public mode and receive it in the mobile phone 3 that is set to self-employed mode,
One of the radio units 10 performs a public mode signal reception operation,
The other radio unit 11 transmits a private-use signal to the mobile phone 3.

Reference numeral 12 denotes a signal processing section, which is composed of a modulator 121, a demodulator 122 and a signal converting section 123.
A control unit 13 controls the signal processing unit 12, the display unit 14, and the key input unit 15. A display unit 14 displays various information. Reference numeral 15 is a key input unit, which is composed of various function keys and dial buttons.

FIG. 3 shows the structure of a self-employed and public superframe. In the figure, BC indicates BCCH (broadcast channel), which indicates the beginning of a superframe and transfers information about the channel structure, system information and the like. P1 to P8 indicate PCHs (paging channels), which are individual incoming signals given to the respective mobile phones 3. SC indicates SCCH (channel for individual cell), which is a bidirectional channel for transferring information necessary for call connection. Then, from BC to the next BC is called a superframe. When the mobile phone 3 knows the structure of the superframe by the BCCH, it receives only the PCH signal corresponding to itself and does not receive other signals. By the way, this P
Generally, the CH signal cannot be received at the same time because the timing and frequency are different between public and private use.

FIG. 4 shows an outline of the sequence operation when receiving a call. The mobile phone 3 knows that an incoming call is being made by the corresponding PCH signal, and shifts to the incoming call operation. In the incoming operation, the mobile phone 3 sends a link channel establishment request to the private-use base station 1, and the private-use base station 1 returns a link channel allocation signal. Then, the synchronous bursts are sent to each other to shift the channel from the control channel to the call channel, and after the communication of various data such as an incoming call response, the call shifts to the busy state.

Next, FIG. 5 shows a flow chart in the case where the private base station 1 makes an incoming call operation by a signal from the public base station 2. This shows a case where the mobile phone 3 is set in the self-employed mode and is connected to the self-employed base station 1, and receives an incoming call from the public mode.

When an incoming call is received from the public base station 2 to the mobile telephone 3, the private base station 1 first receives the incoming call in the public mode (101). Then, it is judged whether or not there is an incoming call to the mobile phone 3 in charge of the user (102). If the incoming call is to the mobile phone 3 in charge, the internal signal processing unit converts the incoming call signal format into a private incoming signal format (103). The private base station 1 transmits the converted signal to the mobile phone 3 (104). As a result, the mobile phone 3 operating in the self-employed mode can receive a call made in the public mode as if it came to the self-employed line.

[0023]

As described above, according to the present invention, the private-use base station monitors the incoming signals in both public and private modes, and when the incoming in the public mode, converts them into incoming signals for private use. And send it to the mobile phone. Therefore, the mobile phone can receive an incoming call in both modes in the private mode. Further, since the mobile phone may be a conventional device, the total price can be kept relatively low.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an embodiment of the present invention.

FIG. 2 is a block diagram of a private-use base station according to the embodiment of the present invention shown in FIG.

FIG. 3 is a configuration diagram of a self-employed and public superframe according to an embodiment of the present invention.

FIG. 4 is a diagram showing an operation at the time of an incoming call in the embodiment of the present invention.

FIG. 5 shows an operation of receiving a call from a public base station according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Self-employed base station (base unit) 2 Public base station 3 Mobile phone (slave unit) 10, 11 Radio section 12 Signal processing section 13 Control section 14 Display section 15 Key input section 101, 111 Reception section 102, 112 Transmission section 121 Modulator 122 Demodulator 123 Signal converter 200, 201, 203, 204, 205 Processing 202 Judgment

Claims (1)

[Claims] 1. A self-employed mode for communicating with a self-employed base station,
A mobile phone having communication means for performing wireless communication in two communication modes of public mode for communicating with a public base station, and a self-employed base station having communication means for performing wireless communication with the mobile phone set in a self-employed mode. In the cordless telephone device configured, the private base station is provided with receiving means for receiving a public mode signal from the public base station, and means for converting the received public mode signal into a private mode signal, The cordless telephone device, wherein the self-employed base station transmits the converted signal to the mobile phone set in a self-employed mode.