JPH08195984A - Radio telephone equipment - Google Patents

Abstract

PURPOSE: To provide a radio telephone equipment capable of performing communication between slave units without intervention of a master unit even within the service zone of the master unit. CONSTITUTION: This equipment is provided with a frame timing generation part 7 and a frame operation mode setting part 8 for selecting the reference frame timing of a transmission frame building part 4, etc., in addition to a radio part 1, a reception frame decomposition part 2, a frame timing extraction part 3, the transmission frame building part 4 and a voice processing part 5. Further, it is provided with a channel setting part 9 for the communication between the slave units for scanning a free channel. and setting the channel at the time of starting the communication between the slave units and an incoming call detection part 10 for the communication between the slave units for detecting an incoming call from another slave unit while scanning the channel at the time of standby. Then, a frame operation mode is turned to a master unit mode in the slave unit A, the free channel is set by the channel setting part 9 and the communication between the slave units is independently performed by the channel different from the master unit without the intervention of the master unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless telephone device such as a car telephone or a mobile telephone.

[0002]

2. Description of the Related Art In recent years, wireless telephone devices have come into widespread use as their convenience and economy have improved.
Among them, in particular, cellular phones and cordless phones have become popular as car phones, mobile phones, and private phones.

A conventional wireless telephone device will be described below. FIG. 2 is a block diagram of a conventional digital radiotelephone device, 1 is a radio unit for transmitting and receiving data wirelessly, 2 is a reception frame decomposing unit for extracting a predetermined frame from a reception signal and separating it into a voice signal and a control signal, Reference numeral 3 is a frame timing extraction unit that extracts the frame timing synchronized with the receiving station from the reception signal and supplies the frame timing to the reception frame decomposition unit 2. Reference numeral 4 is a transmission frame construction unit that constructs a voice signal and a control signal into a predetermined frame. 5 is a voice processing unit for processing a voice signal, 5a is a speaker, 5b is a microphone,
Reference numeral 6 is a control unit for integrally controlling the wireless telephone device.

The operation of the conventional radiotelephone device configured as described above will be described below. First, the signal of the master unit received by the wireless unit is the frame timing extraction unit 3
Thus, the timing synchronized with the master unit is extracted and becomes the reference timing of the received frame decomposing unit 2. This reference timing is also supplied to the transmission frame construction unit 4, and the slave unit processes the transmission / reception frame in synchronization with the partner station (master unit).
In the master unit, the received frame is synchronized with the partner station (slave unit), and the transmission frame is transmitted at a timing unique to the master unit. Now, the reception frame disassembling unit 2 separates the reception voice signal and the reception control data, and the transmission frame constructing unit 4 constructs the transmission voice signal and the transmission control signal into the transmission frame.
In the voice processing unit 5, the voice from the microphone 5b is output as a transmission voice signal and the reception voice signal is output to the speaker 5a.

Here, a case in which the handset A makes a telephone call with the handset B will be described. It is assumed that the child device A is already connected to the parent device on the channel A. In the slave unit A, the control unit 6 sends an inter-slave unit call request signal as a transmission control signal to the transmission frame construction unit 4, and is transmitted to the master unit through the wireless unit 1. The master unit newly makes a call to slave unit B using channel B. In the slave unit B, the control unit 6 detects the incoming call request signal from the reception control data of the received frame disassembling unit 2 and performs the incoming call process, and the line is connected. Next, by connecting the lines of the slave unit A and the slave unit B on the master unit side, the inter-slave unit communication can be performed between the slave unit A and the slave unit B via the master unit.

[0006]

However, in the above-mentioned conventional wireless telephone device, since the inter-slave unit communication is performed via the master unit, one of the slave units is outside the zone of the master unit during the inter-slave unit communication. When moving, there was a problem that the call was interrupted. In addition, since two communication channels of the master unit are occupied to carry out a call between the slave units, the number of usable channels of the master unit (the number of accommodated slave units) decreases.

The present invention solves the above-mentioned problems, and the slave unit B scans channels other than the master unit, monitors the call request between the slave units from the slave unit A, and when the call between the slave units is performed, the master unit is connected. It is an object of the present invention to provide a wireless telephone device capable of making a telephone call between the slaves independently of the master by calling the slave B on a channel different from the above.

[0008]

In order to achieve the above object, the present invention provides a radio section for transmitting and receiving data wirelessly, and a frame processing section connected to the radio section for constructing a transmission frame and disassembling a reception frame. And a frame operation mode setting unit that switches the operation mode between a master unit mode that transmits a frame at its own timing to this frame processing unit and a slave unit mode that transmits a frame in synchronization with an incoming signal; A channel setting unit that performs channel scanning and channel setting, an incoming call detection unit that detects an incoming call while scanning the channel during standby, and a control unit that totally controls the inter-handset call The frame processing unit of is set to the master unit mode via the frame operation mode setting unit, and the empty channel is set by the channel setting unit,
By calling the other handset on a channel different from that of the base unit, and by detecting the incoming call from the one handset in the call reception detection section of the other handset, the other handset is not connected to the base unit. The call is set up on another channel.

[0009]

According to the present invention, with the above configuration, the frame processing unit of one of the slave units is set as the master unit mode via the frame operation mode setting unit, and the empty channel is set by the channel setting unit, and the channel different from the master unit is set. The other handset to call the other handset, and the other handset uses the incoming call detection unit to detect an incoming call from one handset, allowing the handset You can make calls.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a radiotelephone device according to an embodiment of the present invention, in which 7 is a frame timing generation unit for generating unique frame timing, and 8 is a frame operation mode for selecting a reference frame timing of the transmission frame construction unit 4. A setting unit, 9 is a channel setting unit for inter-slave communication that performs idle channel scanning and channel setting when communication between slaves starts, and 10 is a slave that detects an incoming call from another slave while scanning a channel during standby. It is an incoming call detection unit for inter-call communication. The radio unit 1, the received frame decomposition unit 2, the frame timing extraction unit 3, the transmission frame construction unit 4, the voice processing unit 5, and the control unit 6 are the same as the conventional ones, and the description thereof will be omitted.

The operation of the wireless telephone device configured as described above will be described below. In the zone of the master unit, the slave unit A and the slave unit B are in a standby state, the slave unit A calls the slave unit B by an extension call, the slave unit B responds to the incoming call, and the call between the slave units is established. Up to.

First, the case of standby will be described. From the signal of the master unit received by the wireless unit 1, the timing synchronized with the master unit is extracted by the frame timing extraction unit 3 and becomes the reference timing of the received frame decomposition unit 2. The frame operation mode setting unit 8 is normally connected so that the output of the frame timing extraction unit 3 is input to the transmission frame construction unit 4. That is, the slave mode is set. As a result, the timing of the transmission frame is also synchronized with the partner station (base station). As in the conventional example, the master unit synchronizes only the received frame with the partner station (slave unit), and the transmission frame is transmitted at a timing unique to the master unit.

Now, the reception frame disassembling unit 2 separates the reception voice signal and the reception control data into the transmission frame constructing unit 4
Then, a transmission voice signal and a transmission control signal are constructed in a transmission frame. During standby, no voice signal is generated, so the control unit 6 causes the voice processing unit 5 to be inactive. Both the slave units A and B normally monitor the reception control signal in order to respond to the call from the master unit, and simultaneously respond to the inter-slave unit call request from other slave units. The incoming call detector 10 for calls periodically monitors channels other than the master unit to monitor extension call requests from other slave units.

Next, description will be given of a case where the handset A makes a handset call to the handset B. The frame operation mode setting unit 8 of the child device A is connected so that the output of the frame timing generation unit 7 is input to the transmission frame construction unit 4. That is,
The master unit mode is set, and the slave unit A is artificially operated in the operation mode. As a result, the slave unit A releases the synchronization relationship with the parent unit that has been connected so far, and generates a transmission frame at its own timing. Next, the channel setting unit for inter-slave communication scans and sets an empty channel that is not used by the master. The control frame 6 sends a control signal for requesting an inter-slave communication with the slave B to the transmission frame constructing part 4.
Then, the mobile station B makes a call between the mobile stations via the wireless unit 1 on the idle channel. In the handset B, the incoming call detection unit for handset call detection 10 detects the control signal for requesting the handset call, and the control unit 6 constructs a transmission frame using the handset call response signal as a transmission control signal. By sending to the unit 4, by responding to the slave unit A via the wireless unit 1 and setting the voice processing unit 5 in the operating state, the voice from the microphone 5b is output as the transmission voice signal and the reception voice signal is output to the speaker 5a. , Make a call between handset units. The handset A detects the above-mentioned response signal from the handset B, activates the voice processing unit 5 in the same manner as the handset B, and performs a handset call.

[0015]

As described above, according to the present invention, the conventional radiotelephone device is provided with the frame timing generation unit, the frame operation mode setting unit, the inter-handset call channel setting unit, and the inter-handset call arrival detection unit. As a result, the inter-slave communication can be performed on a channel different from that of the master unit without going through the master unit. Furthermore, since another channel is used, the main unit side can continue the service without reducing the number of channels of the main unit.
A user-friendly wireless telephone device can be realized.

[Brief description of drawings]

FIG. 1 is a block diagram of a wireless telephone device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a conventional digital wireless telephone device.

[Explanation of symbols]

 1 Radio Section 2 Received Frame Decomposition Section 3 Frame Timing Extraction Section 4 Transmission Frame Construction Section 5 Voice Processing Section 6 Control Section 7 Frame Timing Generation Section 8 Frame Operation Mode Setting Section 9 Inter-Slave Communication Channel Setting Section 10 Inter-Slave Communication Incoming call detector

Claims (1)

[Claims] 1. A master unit and a slave unit that transmits and receives data in synchronization with an incoming signal from the master unit, and a wireless unit that wirelessly transmits and receives data and a transmission frame connected to this wireless unit to construct a transmission frame. Frame operation mode setting that switches the operation mode between the frame processing unit that decomposes the received frame and the master unit mode that performs frame transmission to this frame processing unit at its own timing and the slave unit mode that performs frame transmission in synchronization with the incoming signal Section, a channel setting section that is connected to the wireless section and performs free channel scanning and channel setting, an incoming call detection section that detects an incoming call while scanning the channel during standby, and controls the inter-slave communication The control unit, the frame processing unit of one of the slave units is set to the master unit mode via the frame operation mode setting unit, and the empty channel is set by the channel setting unit. , By calling the other handset on a channel different from that of the base, and the other handset using the incoming call detection unit to detect an incoming call from one handset, Is a wireless telephone device characterized by setting up a call on another channel.