JP2965801B2 - Wireless communication system and mobile station in wireless communication system - Google Patents

Abstract

PURPOSE:To provide a radio telephone system capable of using a mobile machine as a transceiver at need. CONSTITUTION:The states of the push-talk switches of the mobile machines 21-23 are detected when the mobile machines 21-23 are set in a transceiver mode, and a transmittable state can be set when the push-talk switch is depressed, and a receivable state can be set when no push-talk switch is depressed. A voice inputted to a microphone is outputted from antennas 51-53 as a wave in a transmission state. Meanwhile, in a reception state, the wave inputted from the antennas 51-53 is taken out as an audio signal, and the voice is outputted from the speaker of a reception part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fixing device (Master) and a plurality of mobile stations (handset) and a wireless communication system and configured from
The present invention relates to a mobile device in a wireless communication system .

[0002]

2. Description of the Related Art Conventionally, this kind of radio telephone system is composed of a plurality of mobile units and one fixed unit. Recently, the number of functions has been increased, and a wireless telephone system having an answering machine function and a model in which a wireless telephone system is built in a facsimile apparatus have been commercialized.

[0003]

However, the above-mentioned conventional wireless telephone system is used only as an original telephone, and is not used for anything other than a telephone, such as a portable transceiver. At present, portable transceivers are used for outdoor sports such as mountain climbing and skiing, especially for contacting always dangerous sports such as mountain climbing, but they are expensive for leisure and sometimes qualified. There was a problem because a license was required and it could not be used easily.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide a radio communication system and a mobile device in a radio communication system that enable simple communication between mobile devices.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a radio communication system comprising a plurality of mobile stations and a fixed station which performs radio communication with these mobile stations and is connected to a telephone line. In the system, a mode for selectively selecting an operation mode of the mobile device between a first mode in which communication is performed via a fixed device and a second mode in which communication between mobile devices is performed without passing through the fixed device. Selecting means for selecting the mode
The stage communicates the operation mode of the mobile device via a fixed device.
When the first mode is selected, communication with other mobile devices is performed.
Select the mode to use the secret mode,
The operation mode of the mobile device can be changed without using a fixed device.
If you select the second mode of communication between
The mode is selected so that the mode is not used . In order to achieve the above object, the present invention provides
A mobile device in a wireless communication system in which a plurality of mobile devices are connected to a telephone line via a fixed device, wherein a first mode for communicating with an operating mode of the mobile device via the fixed device is provided. And a second mode for selectively performing communication with another mobile device without passing through a fixed device. The mode selecting device includes an operation mode of the mobile device.
The first mode in which communication is performed via a fixed device
Use confidential mode, which is not communicated to other
Mode, and fix the operation mode of the mobile device.
Second mode for communicating between mobile devices without going through a fixed device
If you select, the mode will not be used to
The mode is selected .

[0006]

The wireless communication system of the present invention operates in a mobile station.
Select the first mode for communicating the mode via the fixed device.
Use confidential mode that is not communicated to other mobile devices
And select the operation mode of the mobile device.
A second mode for communicating between mobile devices without passing through a fixed device.
Do not use the confidential mode if you select
Select a mode.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

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

In FIG. 1, reference numeral 1 denotes a fixed unit, 2 ₁ , 2 ₂ , and 2 ₃ are mobile units, 3 is a telephone line, and 4 is an antenna for radio wave transmission / reception provided in the fixed unit 1, 5 ₁ , 5 ₂ , 5 ₃ mobile device 2 _{1, 2} 2,
2 ₃ is an antenna for transmitting and receiving radio waves respectively provided.

[0010] The frequency of the radio wave transmitted and received between the fixed unit 1 and the mobile station 2 ₁ to 2 _3, the mobile station 2 ₁ from the fixed unit 1
380MHz band transmission to 2 _3, also the mobile station 2 ₁ to 2
The communication from ₃ to the fixed machine 1 uses a 250 MHz band.

FIG. 2 is a block diagram showing the configuration of the fixed machine 1 of FIG. 1. In FIG. 2, the same elements as those of FIG. 1 are denoted by the same reference numerals.

In FIG. 1, reference numeral 6 denotes a display unit for displaying a dial number at the time of dialing and a mode content at the time of mode setting. Reference numeral 7 denotes an operation unit for performing dial input and mode set input. Reference numeral 8 denotes a handset, which includes a microphone and a receiver. A control unit 9 controls the telephone and controls the operation unit 7 and the display unit 6. The control unit 9 includes a CPU, a ROM, a RAM, a PIO, and the like. The handset 8, the transmission unit 10, and the reception unit 11 are connected to the control unit 9. The transmitting unit 10 converts an audio signal into a radio wave and transmits it. The receiving unit 11 receives the radio wave and detects and demodulates the radio signal to extract the audio signal.

An antenna 4 is connected to the transmitting unit 10 and the receiving unit 11, and the antenna 4 is composed of a helical antenna or the like.

The transmitting section 10 and the receiving section 11 have a secret mode in which a voice is encrypted by a predetermined method for communication.

[0015] Figure 3 is a block diagram showing a configuration of the mobile station 2 ₁ of FIG. 1 are denoted by the same reference numerals to common elements with Figure 1. The mobile station 2 ₁ has a control unit 12 for the mobile station 2 ₁ overall control as shown in FIG. Reference numeral 13 denotes a transmitting unit, which includes an electret condenser microphone, a dynamic microphone, and the like. Reference numeral 14 denotes a receiver, which is composed of a speaker. Reference numeral 15 denotes a display unit which is connected to the control unit 12 and displays a state of the wireless telephone system, an incoming call display, and the like, and is configured by an LCD, an LED, and the like. An operation unit 16 for setting various modes is connected to the display unit 15. The receiving unit 18 are connected with the transmitter 17 between the control unit 12 and the antenna 5 _1.
Reference numeral 19 denotes a battery as a power supply. Incidentally, the description thereof is omitted also other mobile stations 2 ₂ and 2 ₃ are the mobile station 2 ₁ the same configuration.

The transmitting section 17 and the receiving section 18 have a secret mode in which voice is encrypted by a predetermined method for communication.

[0017] FIG. 4 is a diagram illustrating a state in which the mobile station 2 ₁ to 2 ₃ to each other when the set to the mobile station 2 ₁ to 2 ₃ to the mobile station inter-only radio communication mode (transceiver mode) is communicating . Incidentally, the mobile station 2 ₁ to 2 ₃ calls between the typical wireless telephone system is performed through the fixed machine 1.

[0018] Incidentally, any of the mobile stations 2 ₁ to 2 ₃ is fixed unit 1
Is communicated in a secret mode so as not to be communicated to other mobile devices. On the other hand, in the transceiver mode, communication is performed without using the secret mode.

Between the mobile station 2 ₁ to 2 ₃ will be able to direct wireless communication in the case of setting [0019] The mobile station 2 ₁ to 2 ₃ of the present embodiment to the transceiver mode. At this time, the previous input frequency that is backed up is displayed on the display unit 15, and the receiving unit 18 and the transmitting unit 17 are automatically set so that the same frequency as the frequency displayed on the display unit 15 can be transmitted and received. Further, when it is desired to change the transmission / reception frequency, the frequency can be set to an arbitrary frequency within a predetermined range by key input of the operation unit 16. On the other hand, the fixed machine 1 is connected to the telephone line 3 and functions as a normal telephone.

Next, the operation of the fixed unit 1 in the wireless telephone system according to the embodiment of the present invention having the above configuration will be described with reference to FIG.

FIG. 5 is a flowchart showing the operation procedure of the fixed machine 1.

First, in step 1, it is detected whether or not there is an incoming call from the telephone line 3 connected to the fixed machine 1. If there is an incoming call, the control unit 9 detects it and proceeds to the next step 3. move on. In step 3, all of the mobile station 2 ₁ to 2 ₃ performs a check whether it is set to the transceiver mode, the mobile station 2 ₁ to 2 ₃ is not set in the transceiver mode, the next step 5 to advances, the command that specifies the incoming command and the frequency issued from the control unit 9 of the fixed unit 1 and transmitted from the transmitting unit 10 via the antenna 4, to beat the bell of the mobile station 2 ₁ to 2 _3. To off-hook performs detection of off-hook of the next step 6 in the handset 8 of the mobile station 2 ₁ to 2 ₃ or the fixed unit 1 is detected is ringing the bell of the mobile station 2 ₁ to 2 _3.

[0023] In step 6, if off-hook is detected, stopping the ringing of the bell of the mobile station 2 ₁ to 2 _3, executes the line capture step 7. The line acquisition is performed by a line control circuit (not shown) of the control unit 9, and the telephone enters a talking state in the secret mode at the designated frequency. When the mobile station 2 ₁ to 2 ₃ of the on-hook is detected in step 8, the control is terminated operation by opening the line in step 9.

On the other hand, if there is an incoming call from the telephone line 3 in the step 1, the process proceeds to step 2, performs off-hook detection of the mobile station 2 ₁ to 2 ₃ or the fixed unit 1 of the handset 8, off hook If is not detected, the process returns to step 1. If an off-hook is detected in step 2, the process proceeds to step 7 to perform line seizure, transmit a command for specifying a frequency, and enter a talking state in the secret mode.

On the other hand, in the above step 3, the mobile units 2 ₁ to 2 ₃
Are set to the transceiver mode, the process proceeds to step 4 to detect whether or not the handset 8 of the fixed machine 1 is off-hook, and waits until the handset 8 is off-hook. Then, when it goes off-hook, the process proceeds to step 7 to perform line capture.

[0026] Next, based on FIG 6 the operation of the mobile station 2 ₁ to 2 ₃ of the radio telephone system of an embodiment of the present invention having the above structure will be described.

[0027] FIG. 6 is a flowchart showing an operation procedure of the mobile station 2 ₁ to 2 _3.

Firstly, the mobile station 2 ₁ to 2 ₃ performs a check whether it is set to the transceiver mode in step 1. Here, the transceiver mode setting of the mobile station 2 ₁ to 2 _3, must be set for each of the mobile stations 2 ₁ to 2 _3. The setting method may be such that the setting is made from the operation unit 16 to the nonvolatile memory of the control unit 12 by a mechanical method such as a changeover switch, or by a method called a “software switch”. The software switch is a software flag that can be registered in advance in the nonvolatile memory and can be registered as ON / OFF (1/0). The configuration is such that software switches can be registered by operating the keys of the operation unit 16. The control unit 12 determines the execution of the program based on the value (0 or 1) of the software switch. At the same time the control unit 12 via the antenna 5 ₁ to 5 ₃ from transmitter 17, to the fixed unit 1 sends a command is registered in the nonvolatile memory of the control unit 9 of the stationary machine 1. Thus the fixed unit 1 can recognize any of the mobile stations 2 ₁ to 2 ₃ is set to the transceiver mode.

It should be noted, it must cancel operated for each of the mobile station 2 ₁ to 2 ₃ Similarly, when releasing the set mode.

If it is determined in step 1 that the transceiver mode has been set, the process proceeds to step 2 where the state of a push talk switch (not shown) of each of the mobile units 21 to 23 is detected.
Step 4 if the push-to-talk switch is pressed
The signal state transmission proceeds to, also if not pressed will receive state proceeds to Step 3, respectively back to step 1. In the receiving state of step 3, the antennas 51 to 51 in FIG.
The radio wave input from 53 is detected and demodulated by the receiving unit 18 to extract an audio signal.
Output sound from the speaker. On the other hand, in the transmission state of step 4, the voice input to the microphone of the transmitting section 13 in FIG.
, And output from the antennas 51 to 53 as radio waves.

In steps 3 and 4, the secret mode is not used. In the reception and transmission states of steps 3 and 4, communication is performed at the frequency input from the operation unit 16.

On the other hand, if it is determined in step 1 that the transceiver mode has not been set, step 5
To detect whether there is an incoming call. The incoming call detection is performed by the control unit 12 of FIG. 3 analyzing the incoming call command sent from the fixed machine 1 of FIG.

If there is no incoming call in step 5, the process returns to step 1;
_{1-2 3} off-hook to wait until it is detected. If an off-hook is detected in step 6, the process proceeds to step 7, where a line capture command is sent to the fixed
Execute line capture with. Here, a plurality of mobile stations 2 ₁ to 2 ₃
Is off-hook, the mobile station that sent the line capture command earlier becomes effective.

In the next step 8, the communication state is set in the secret mode at the frequency designated by the command received together with the incoming call command. In step 9, the communication state is maintained until the on-hook is detected. If an on-hook is detected in step 9, a line release command is sent promptly in step 10, and then, in the next step 11, a standby state is set and the control operation is completed. Here, also includes information for identifying each of the mobile station 2 ₁ to 2 ₃ to a predetermined command.

FIG. 7 is a list showing a typical example of this type of wireless telephone system.

As can be seen from the figure, for example, in Japan, the frequency of radio waves transmitted and received in a wireless telephone system is
Channel spacing of 1 within a predetermined frequency range
It is 2.5 KHz. The frequencies of radio waves transmitted and received are different in the 250 MHz band for mobile device transmission and 380 MHz band for fixed device transmission.

When the mobile station is in the transceiver mode, the circuit is configured so that the frequencies of radio waves transmitted and received are the same as each other.

[0038]

As described above, according to the radio communication system of the present invention, the operation mode of the mobile station is changed between the first mode in which communication is performed via the fixed station and the mode between the mobile stations without passing through the fixed station. Selecting means for selectively selecting a second mode in which communication is performed by the mobile device, wherein the selecting means selects an operation mode of the mobile device.
Select the first mode to communicate the code via the fixed machine
Use the secret mode, which is not communicated to other mobile devices.
Select the mode to use, and the operation mode of the mobile device
To communicate between mobile devices without passing through the fixed device.
When the mode is selected, do not use the confidential mode
It will select the mode in this way, passing between a simple mobile device mutual
The effect of being able to talk is obtained.

[Brief description of the drawings]

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

FIG. 2 is a block diagram showing a configuration of a fixed machine in the system.

FIG. 3 is a block diagram showing a configuration of a mobile device in the same system.

FIG. 4 is a diagram showing a state in which a mobile device in the system is set to a transceiver mode and is communicating.

FIG. 5 is a flowchart showing an operation procedure of a fixed machine in the same system.

FIG. 6 is a flowchart showing an operation procedure of a mobile device in the same system.

FIG. 7 is a list showing a typical example of a wireless telephone system.

[EXPLANATION OF SYMBOLS] 1 fixed unit 2 _{1, 2} 2, 2 ₃ mobile 3 telephone antenna 5 ₁ line 4 fixed machine, 5 _2, 5 ₃ mobile device 2 _{1, 2} 2, 2 ₃ of the antenna 12 mobile station Control unit 15 Mobile unit display unit 16 Mobile unit operation unit (mode selection means, frequency setting means)

Claims (8)

(57) [Claims] In a wireless communication system comprising a plurality of mobile devices and a fixed device connected to a telephone line while performing wireless communication with the mobile devices, the operation mode of the mobile device is communicated via the fixed device. the first mode and the mode selecting means for selecting alternatively into a second mode in which communication between the mobile station mutually without the fixed machine to perform provided, the mode selecting manual
The stage communicates the operation mode of the mobile device via a fixed device.
When the first mode is selected, communication with other mobile devices is performed.
Select the mode to use the secret mode,
The operation mode of the mobile device can be changed without using a fixed device.
If you select the second mode of communication between
A wireless communication system wherein a mode is selected so as not to use the mode . 2. The wireless communication system according to claim 1, wherein when the second mode is selected by the mode selection means, the plurality of mobile devices function as transceivers. 3. The wireless communication system according to claim 1, wherein said mode selection means is constituted by a changeover switch or a software switch. 4. A frequency setting means for arbitrarily setting a frequency of a radio wave transmitted / received between the plurality of mobile stations within a predetermined range when the second mode is selected by the mode selection means. The wireless communication system according to claim 1, wherein 5. A mobile device in a wireless communication system in which a plurality of mobile devices are connected to a telephone line via a fixed device, wherein the mobile device communicates with the mobile device via the fixed device via an operation mode of the mobile device. Mode selection means for selectively selecting between a first mode for performing communication and a second mode for performing communication with another mobile device without passing through a fixed device , wherein the mode selection device includes an operation mode of the mobile device. Fix
If you select the first mode of communication via
Use confidential mode that is not communicated to some mobile devices
Mode, and set the operation mode of the mobile unit via the fixed unit.
Select the second mode to communicate between mobile devices
Mode, select the mode so that the confidential mode is not used.
Mobile device in the wireless communication system, characterized by-option. 6. The mobile station according to claim 5, wherein the mobile station functions as a transceiver when the second mode is selected by the mode selection means. 7. The mobile station in a wireless communication system according to claim 5, wherein said mode selection means comprises a changeover switch or a software switch. 8. A frequency setting means capable of arbitrarily setting a frequency of a radio wave transmitted / received to / from the other mobile station within a predetermined range when the second mode is selected by the mode selection means. The mobile station in the wireless telephone system according to claim 5, wherein: