JPH10285072A - Radio equipment and its automatic selection method for communication channel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the burden of an operator and also to shorten the using time of a queuing channel by selecting a communication channel in an automatic way in place of the hitherto manual way. SOLUTION: If an idle channel is available, a CPU 103 sets the frequency of a channel frequency nonvolatile memory 106 at the frequency synthesizer part of a radio part 102. Thus, a transmitting/receiving channel is set again at a queuing channel, and the idle communication channel is sent from the digital signal part of the part 102. Then the frequency corresponding to the channel number that is received by the memory 106 of a radio station B is set at the frequency synthesizer part of the part 102. Meanwhile, a communication channel number is shown at a channel display part 110 of an operation display part 108 and a connection state display part 112 is set in a connection state. The part 112 consists of an LED, etc., and shows that the part 112 is connected to the communication channel when it's turned on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically selecting a communication channel between radio stations and a radio.

[0002]

2. Description of the Related Art Conventionally, radio stations belonging to the same group
When communicating with a specific partner station, one standby wireless channel is provided, and each wireless station always receives this channel, responds to the call of its own station, and then the operator manually selects another available channel. They were to search, move to each other and communicate with each other. But,
Performing a manual search for an available communication channel places a burden on the operator, and short-time communication is often performed on a standby channel.

[0003]

Since the standby channel is a channel used by all the radio stations for calling, when used for communication, there is a problem that other radio stations cannot be called. Also, communication on the standby channel has a problem that it is received by all wireless stations. An object of the present invention is to automatically select a communication channel, which has been manually performed until now, to reduce the burden on an operator and to reduce the use time of a standby channel and a radio channel automatic selection method. To provide a machine.

[0004]

In order to achieve the above object, the present invention relates to a radio used in a radio communication system having one standby channel and a plurality of communication channels. Use channel setting means for setting a channel to be used by the transmission / reception unit; and first control means for controlling the use channel setting means to set a use channel of the transmission / reception unit to the standby channel when in a standby state. Control means, when a transmission request is issued from the own station while in the standby state, determine whether or not the standby channel is being used by another station from the reception state of the transmission / reception unit, and the standby channel is idle. And confirming that the transmission / reception unit transmits a call signal of the communication partner station via the standby channel. Control means, after transmitting the call signal, by controlling the use channel setting means so that the transmitting and receiving means sequentially receives the communication channel, by checking whether the communication channel thus received is in use A vacant communication channel detecting means for detecting a vacant communication channel, and when the vacant communication channel is detected by the means, the transmitting / receiving means transmits the channel number of the channel to the communication partner station via the standby channel. Third control means for controlling the use channel setting means so that the use frequency of the own station becomes the idle communication channel, and the transmission / reception section is in a standby state. When a paging signal addressed to the own station is received via the standby channel, a paging signal detection for detecting this is performed. Means for detecting, when the paging signal is detected by the means, the channel number of the idle communication channel is transmitted and when it is detected that the channel number is received by the transmission / reception unit, the channel number used by the own station is transmitted. And a fourth control unit for controlling the use channel setting unit so that the communication channel is used as the communication channel.

The present invention also relates to a method for automatically selecting a communication channel of a radio in a radio communication system having one standby channel and a plurality of communication channels. At the time of transmission, after confirming that the standby channel is not being used by another station, a call signal to a communication partner is transmitted through the standby channel, and a response signal is received from the communication partner station that has received the transmitted call signal. Is returned, an idle communication channel is detected by sequentially switching to each of the communication channels and checking whether the channel is vacant. When an empty communication channel is found, the channel number is communicated through the standby channel. Transmit to the partner station, and then change the channel used by the own station to the free communication channel. The communication partner station starts communication by setting the empty communication channel indicated by the transmitted channel number as a channel used by the own station. Provides a selection method.

[0006]

Embodiments of the present invention will be described below in detail. FIG. 1 is a diagram showing a configuration example of a wireless device of the present invention. Reference numeral 100 denotes an antenna, reference numeral 101 denotes an RF (high frequency) circuit, reference numeral 102 denotes a wireless unit, reference numeral 103 denotes a CPU,
Reference numeral 104 denotes ROM, reference numeral 105 denotes RAM, reference numeral 106
Is a channel frequency nonvolatile memory, reference numeral 107 is a station address data nonvolatile memory, reference numeral 108 is an operation display unit,
Reference numeral 109 denotes a station selection switch, reference numeral 110 denotes a channel display unit, reference numeral 111 denotes a standby channel use state display unit,
Reference numeral 112 denotes a connection state display unit. FIG. 2 is a control flow in the case where the wireless station A calls and communicates with the wireless station B. Hereinafter, description will be made with reference to FIGS.

In FIG. 2, both radio stations A and B always receive a standby channel (STEP 10 and STEP 2).
1). That is, in FIG. 1, the CPU 103 of the wireless device uses the RAM 105 as necessary, operates according to the program written in the ROM 104, and sets the frequency of the standby channel of the channel frequency nonvolatile memory 106 to the frequency synthesizer of the wireless unit 102. And antenna 1
00, the RF circuit 101 is set as a standby channel. In this example, channel 0 of the channel frequency nonvolatile memory 106 is a standby channel. When the standby channel is used by another wireless station, it is received by the antenna 100 and the RF circuit 101 and demodulated by the digital signal unit of the wireless unit 102. When the reception level input unit detects that the electric field intensity of the reception radio wave of the standby channel is equal to or higher than a certain level, the operation display unit 10
The standby channel use state display unit 111 of No. 8 displays “in use”. This is performed by lighting a light emitting diode or the like.

When the A radio station calls the B radio station, the operator of the A radio station checks whether the standby channel use state display section 111 is in use (STEP 11 in FIG. 2). NO at STEP 11), station selection switch 10
The user presses the button of the B station 9 (STEP 12). When the CPU 103 detects that the button of the station B has been pressed, the address of the B radio station in the station address data nonvolatile memory 107 is transmitted from the digital signal section of the radio section 102 via the RF circuit 101 and the antenna 100, The data is transmitted on the standby channel (STEP 13). On the other hand, since the B radio station receives the standby channel (STEP 21), the address signal transmitted from the A radio station is transmitted to the radio section 102 of the B radio station.
Are demodulated by the digital signal section, and the CPU 103 determines whether the signal is the address signal of the own station (STEP 22). If it is the address signal of the own station (YES in STEP 22), the connection completion signal is sent from the digital signal section of the radio section 102 to the RF circuit 1
01, the signal is transmitted via the antenna 100 via the standby channel (STEP 23).

The wireless station A that has transmitted the address signal of the wireless station B is waiting to receive the connection completion signal on the standby channel (STEP 14). When a connection completion signal is received (YES in STEP 14), an empty communication channel is searched (STEP 1).
5). That is, the CPU 103 of the radio station A sequentially sets the frequency of each communication channel of the channel frequency nonvolatile memory 106 to the frequency synthesizer of the radio section 102, receives each communication channel, and sets the reception level input section of the radio section 102. Then, a communication channel in which the radio wave of the communication channel is equal to or less than a certain level of electric field strength and there is no signal demodulated by the audio signal unit of the radio unit 102 is searched for and used as an empty communication channel. If there is a free communication channel (YE in STEP15)
S), the CPU 103 sets the frequency of the standby channel (the frequency of channel 0) of the channel frequency nonvolatile memory 106 in the frequency synthesizer of the radio unit 102, thereby resetting the transmission / reception channel to the standby channel. The number of the idle communication channel is transmitted from the digital signal section 102 (STEP 16).

The B radio station that has transmitted the connection completion signal is waiting to receive the communication channel number on the standby channel (STEP 24). When the communication channel number is received (ST
(YES in EP24), sends out a number reception signal (STEP25),
The operation shifts to the communication channel of the received number (STEP 26).
That is, the channel frequency nonvolatile memory 1 of the B radio station
The frequency corresponding to the received channel number of 06 is set in the frequency synthesizer of the radio unit 102. The communication channel number is displayed on the channel display section 110 of the operation display section 108, and the connection state display section 112 is set to the connection state. Since the connection state display unit 112 is constituted by a light emitting diode or the like, when it is lit, it indicates that it has been connected to the communication channel.

The radio station A that has transmitted the communication channel number is:
It is waiting for the reception channel to receive the number reception signal from the B radio station (STEP 17). When the number reception signal is received (YES in STEP 17), the flow shifts to the communication channel of the transmitted number (STEP 18). That is, the frequency corresponding to the received channel number of the channel frequency nonvolatile memory 106 of the wireless station A is set in the frequency synthesizer of the wireless unit 102. The communication channel number is displayed on the channel display section 110 of the operation display section 108, and the connection state display section 112 is set to the connection state.

When the operator of the wireless station A confirms that the light emitting diode of the connection state display unit 112 is turned on, the operator of the wireless station B starts communication with the wireless station B. In this example, data communication is performed (STEP 19 and STEP 27). When the data communication is completed, an end signal is transmitted / received to / from the other party through the communication channel (STEP 20 and STEP 28), and the process returns to the standby channel (STEP 10 and STEP 29). That is, both the A radio station and the B radio station set the frequency of the standby channel of the channel frequency nonvolatile memory 106 in the frequency synthesizer section of the radio section 102. The communication channel connection display unit 112 of the operation unit 108 is turned off, and the channel display unit 110 displays a standby channel. Data communication is performed by the CPU 10
3, using a keyboard and an input / output port (not shown) connected to the device. The end of data communication also indicates that the CPU 1
03.

The control flow shown in FIG. 2 is described only for the case of the normal route, but not for the quasi-normal route. For example, radio station A sends an address signal (STEP
13) While waiting for a connection completion signal from the B radio station (STEP 14), the connection completion signal does not come if the B radio station is turned off. In such a quasi-normal case,
In FIG. 2, the connection completion signal is permanently waiting. However, in fact, the timing is set in the NO loop of STEP 14, and if the connection completion signal does not come for a certain period of time,
The address signal is transmitted again, and if the connection completion signal still does not arrive, control such as returning to the initial state due to timing over is performed. Of course, the retransmission of the address signal can be manually performed by the operator. Similarly, in the NO loops of the other signal reception waiting determination boxes (STEPs 17, 22, and 24) in FIG. 2, the timing is set, and when a signal to be received does not come, the loop is permanently stopped. It doesn't stay. Also, in the transmission and reception of the end signal (STEPs 20 and 28), when the end signal is transmitted from the own station first, the end signal is received from the partner and the channel shifts to the standby channel, but the end signal is not received from the partner. Also shifts to the standby channel after a certain period of timing over.

As described in detail above, according to the present invention, the transition to the communication channel can be automatically realized. However, it may be necessary to transmit data to all other wireless stations at once. In this case, the operator confirms that the standby channel use state display section 111 is not used, and then sets the station selection switch 10
9. Press the simultaneous button and then send the data. That is, when the simultaneous button is pressed, the addresses corresponding to the station address data nonvolatile memory 107 simultaneously are transmitted from the standby channel. When each wireless station receives the corresponding address signal at the same time, it shifts to the data receiving state on the standby channel without sending the connection completion signal, and receives the sent data. When receiving the end signal, the terminal returns to the standby state without sending the end signal from its own station. With such control, simultaneous data transmission using a standby channel is also possible.

[0015]

According to the present invention, the following effects can be obtained. (1) The operator specifies the partner wireless station to communicate with by simple operation on the transceiver, automatically calls the partner wireless station, performs connection and shifts to the communication channel,
Reduce the burden on the operator. (2) The standby channel is not used for communication other than simultaneous data transmission, the use efficiency for calling the standby channel is improved, and unnecessary communication data with another wireless station is not required. (3) Since the use state of the communication channel is automatically detected, the setting of the same communication channel is eliminated, and the possibility of interference is reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a wireless device of the present invention.

FIG. 2 is a communication channel setting flow between a wireless station A and a wireless station B.

[Description of Signs] 100 Antenna 101 RF circuit 102 Radio unit 103 CPU 104 ROM 105 RAM 106 Channel frequency nonvolatile memory 107 Station address data nonvolatile memory 108 Operation display unit 109 Station selection switch 110 Channel display unit 111 Standby channel use state display Unit 112 Connection status display unit

Claims (5)

[Claims] 1. A wireless device used in a wireless communication system having one standby channel and a plurality of communication channels, comprising: a transmitting / receiving unit; a use channel setting unit for setting a channel used by the transmitting / receiving unit; First control means for controlling the use channel setting means so as to set the use channel of the transmission / reception unit to the standby channel when in the standby state; and a transmission request from the own station when in the standby state. Occurs, it is determined from the reception state of the transmission / reception unit whether the standby channel is being used by another station, and it is confirmed that the standby channel has become free, and the calling signal of the communication partner station is transmitted / received. A second control unit for controlling the unit to transmit via the standby channel; and Communication means for controlling the use channel setting means so as to sequentially receive the communication channel, and checking whether or not the communication channel thus received is in use by detecting an unused communication channel; When the vacant communication channel is detected by the means, the transmitting / receiving means controls the channel number of the vacant communication channel to be transmitted to the communication partner station via the standby channel. Third control means for controlling the use channel setting means so as to become the idle communication channel; and, when in a standby state, the transmission / reception unit receives a call signal addressed to the own station via the standby channel. And a call signal detecting means for detecting the call signal after the call signal is detected by the means. When detecting that the channel number of the empty communication channel has been transmitted and received by the transmitting / receiving unit, the control unit controls the use channel setting unit so that the use channel of the own station becomes the communication channel of the transmitted channel number. And a fourth control means for performing the following. 2. The wireless device according to claim 1, wherein:
Display means, and a first display means for displaying the use on the first display means when the second control means detects that the standby channel is in use. And a display control unit. 3. The wireless device according to claim 1, wherein
And the channel number of the free communication channel detected by the third control means or the channel number of the free communication channel set by the fourth control means is displayed on the second display means. And a second display control means for providing the same. 4. The wireless device according to claim 1, wherein
Display means, and when the own station is connected to another station via the idle communication channel, a third display control means for displaying the connection on the third display means,
A wireless device characterized by comprising: 5. A method for automatically selecting a communication channel of a wireless device in a wireless communication system having one standby channel and a plurality of communication channels, the method comprising: waiting in the standby channel during standby; After confirming that the standby channel is not used by another station, a call signal to the communication partner is transmitted through the standby channel, and a response signal is returned from the communication partner station that has received the transmitted call signal. Then, the communication channel is sequentially switched to each of the communication channels, and an empty communication channel is detected by checking whether the channel is vacant. When an empty communication channel is found, the channel number is transmitted to the communication partner station via the standby channel. After that, the channel used by the own station is set to the empty communication channel, By Shin partner station to set the idle communication channel indicated by the channel number transmitted as used channel of the local station, communication channel automatic selection method of radio characterized in that so as to start the communication.