JP3055058B2 - Network radio station with relay function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network radio which performs communication via a network base station, and more particularly to a network radio having a relay function for a general radio.

[0002]

2. Description of the Related Art Conventionally, a network radio is required to communicate with a radio station in a network. A general portable radio (hereinafter referred to as a portable radio) communicates with a radio station in a network. I could not do it. As the network wireless communication system, there is a configuration diagram of a conventional network communication system as shown in FIG. FIG. 6 is a diagram showing a signal path of the network communication of FIG. IDs other than those shown in the figure
Network communication by code cannot be supported. In the figure, reference numeral 501 denotes a network base station, 51a and 51n denote network radios for network communication (hereinafter referred to as network radio stations), and 52a and 52n denote portable radios connectable to a network. The radio frequency band of this network can communicate with a plurality of channels in the VHF and UHF bands. When the network wireless station 51a or the portable wireless device 52a communicates with the network wireless station 51n in the area, the transmission frequency is set to “201 #” with the partner station ID code, for example, a digital signal from the keypad of the operation unit of the network wireless station 51a. The ID is set, a self-station ID code is attached, and it is transmitted to the base station 501. The base station 501 relays the signal and transmits it to the network wireless station 51n specified by the ID code. Network radio station 51
If the signal transmitted from the base station 501 has the own station ID code, n takes in the signal and transmits a recognition signal with the ID code of the network wireless station 51a sent in combination with the own station ID code. When receiving the recognition signal, the network radio station 51a establishes a communication line with the network radio station 51n by relaying the base station 501, and can communicate.

[0003] In addition to network communication, there are various restrictions on the transmission frequency and transmission power in the case of communication using radio equipment, and the range of communication may be limited due to such restrictions. There is also. M
There are a CA system, a cellular system for communicating from a wireless device to a telephone line, and the like, and a repeater system for amateur radio and specific low-power wireless devices. In these systems, the communication is performed by transmitting and receiving a set of the partner station code and the own station code. or,
There is also a method in which a calling signal is transmitted to a child device by using the parent device as a relay unit when the parent device of the wireless device having the child device is absent.

[0004]

In a conventional network communication system, a network radio located in the area of a base station of a network usually has an individual ID code. Communication is not possible unless the ID code of the other party's network radio is input. Therefore, the portable wireless device cannot communicate with the network wireless device in the network. Communication between the same portable wireless devices has a limited communication range due to transmission power. The present invention, in order to eliminate such inconvenience of the portable wireless device, when the ID code of the other station in the network is input and transmitted from the keypad of the portable wireless device, the network wireless device relays, Provided is a communication method which enables communication with a network wireless station of a partner transmitting an ID code in a network area and a portable wireless device within a communication range with the network wireless station.

[0005]

Means for Solving the Problems In a network radio station which communicates by designating a partner station with an ID code via a network base station, the network radio station includes a network radio communicating with the ID code and a network communication ID. A wireless device that communicates with a wireless device without a code, and a modulation signal between the network wireless device and the wireless device;
It is connected by a connection line for transmitting and receiving demodulated signals and digital data, and the control associated with the transmission and reception of each signal is provided with means for controlling with a control signal on the sending side, so that a network wireless communication device and a wireless device without a network communication ID code can be connected. And / or a network wireless communication device having a function as a relay device.

[0006]

FIG. 1 is a block diagram showing a main part of a network radio station according to an embodiment of the present invention. The figure will be described from the configuration.
And a wireless device 13, and a network wireless device 12 a
, 120 is an antenna, 129 is an antenna unit, 121 is a transmission unit, 122 is a reception unit, 123 is a CPU, 124 is a data encoder / decoder (hereinafter referred to as a data conversion unit), 125 is a switch circuit, 126 is a mute circuit,
127 is a speaker amplifier, and 128 is a speaker.

The configuration of the radio apparatus 13 is as follows: 130 is a transmitting antenna, 131 is a transmitting section, 132 is a modulating section, 133 is a receiving antenna, 134 is a receiving section, 135 is a demodulating section,
136 is a CPU, 137 is a data encoder / decoder (hereinafter referred to as a data conversion unit), 138 is a switch circuit, and 139 is a microphone. Network radio 12a
The connection between the wireless device 13 and the wireless device 13 includes a demodulation output connection line that branches the signal demodulated by the receiving unit 122 and connects the signal to the switch circuit 138, and a part of the output of the demodulation unit 135 of the wireless device 13 is connected to the switch circuit 138. And a part of the output of the demodulation unit 135 includes a modulation input connection line output to the switch circuit 125 when there is a control signal indicating that the switch circuit 138 has selected network communication. CPU of wireless device 12a
The network wireless station 12 is configured by connecting serial data connection lines serving as a relay function between the 123 and the CPU 136 of the wireless device 13 so as to transmit and receive serial data. In the figure, 11 is a portable radio, 14
Is a relay base station for the network radio.

First, the operation of the network radio 12a will be described from the receiving side. When the reception signal input from the antenna 120 is amplified and demodulated by the reception unit 122 through the antenna unit 129, the demodulated signal is unconditionally output to the switch circuit 138 of the wireless device 13. When the demodulated signal is converted by the decoder of the data conversion unit 124 and an ID code is detected from the signal, the local station I
A match with the D code is detected, and when the match is detected, a recognition signal composed of the ID code of the partner station network radio 12b and the own station ID code is generated under the control of the CPU 123, and the data conversion unit 124, the transmission unit 121, and the antenna unit A communication line is established by transmitting from the antenna 120 through 129.

When the communication line is established, a control signal is output to the mute circuit 126 and the CPU 136 of the wireless device 13 through the serial data connection line, and the CPU 136 outputs a control signal and the demodulated output is transmitted from the switch circuit 138 to the modulation unit 13.
2 so that the switch circuit 138 is connected. A part of the received and demodulated signal passes through a mute circuit 126 opened by the control signal, and outputs a sound from a speaker 128 through a speaker amplifier 127. If the ID code of the received signal does not match the own station ID code, the control signal is not output from the CPU 123, so that the mute circuit 126 keeps the muted state and the output of the speaker 128 is stopped.

Next, transmission from the local station to the network radio 12b of the communication partner is performed by the network radio 12a of the local station.
a from the keypad (not shown) provided at
The ID code 2b is input and transmitted to the base station 14 together with the own station ID code. Remote station network radio 12b
When a recognition signal is transmitted from the base station 14 via the base station 14, a communication line is established by receiving the signal. Thereafter, transmission and reception of voice and data become possible. Since the microphone 139 for voice input is provided in the wireless device 13, the wireless device 1
This will be described in section 3.

The wireless device 13 will be described from the receiving side. The transmission signal from the portable wireless device 11 is transmitted to the antenna 133
Then, the output amplified and demodulated through the receiver 134 and the demodulator 135 is output from the speaker 128 through the switch amplifier 138 and the speaker amplifier 127 of the network radio 12a. The digital data in the demodulated signal is converted by an encoder / decoder in a data conversion unit 137, input to a CPU 136, formed into serial data, and output to the CPU 123 of the network radio 12a.
Output to When the CPU 136 and the CPU 123 detect an ID code designating a communication partner station of the network in the serial data, the CPU 136 and the CPU 123 automatically attach the own station ID code to the ID code and transmit the ID code from the antenna 120 of the network radio 12a. When the communication partner station of the network receives and detects the ID code, it returns a recognition signal. When the own station receives the recognition signal, the network wireless device 12a performs a relay function between the partner station 12b of the transmitted ID code and the portable wireless device 11, thereby establishing a communication line. Upon detection of the recognition signal, the CPU 136 causes the demodulation unit 13
5 by controlling the switch circuit 138 so that the output of the switch 5 becomes a modulation signal of the network radio 12a.
Switch to connection with 5. Also, the CPU 123 is the wireless device 1
3 transmits the modulated signal input to the switch circuit 125 based on the serial data output from the CPU 136.
The switch circuit 125 is brought into contact with the switch 21 in order to take it in.
If the partner station network radio 12b does not transmit a recognition signal, a communication line is not established.

The transmission of the wireless device 13 will be described. The transmission conditions are communication with the portable wireless device 11, relay transmission when the portable wireless devices 11 communicate with each other, and relay transmission when the network wireless station 12 b and the portable wireless device 11 communicate with each other. In the case of communication between the network wireless station 12a and the portable wireless device 11, the voice is captured by the microphone 139, modulated by the modulation unit 132 through the switch circuit 138, and amplified by the transmission unit 131 in the same manner as in the transmission of a normal wireless device. From the antenna 130. Portable radio 11
In the case of relay transmission of communication between the mobile stations, a transmission signal from the portable wireless device 11 is fetched by the antenna 133, amplified by the reception unit 134, and demodulated by the demodulation unit 135. Next, the demodulated signal is passed through a switch circuit 138, the transmission frequency is modulated by a conversion unit 132, and the transmission unit 131 amplifies the transmission frequency.
Transmit from 30. In the case of relay communication between the network radio 12b and the portable radio 11, the CPU 123 and the CPU
136 cooperates to input a signal received by the network radio 12a to the modulation unit 132 via the switch circuit 138, modulates the transmission frequency, and transmits the signal from the transmission unit 131 via the transmission antenna 130.

FIG. 2 is a diagram showing network communication using the network radio of the present invention. FIG. 2 will be described. Reference numeral 11 in FIG. 2 denotes a portable wireless device that cannot use a network. Reference numeral 12 denotes a network radio station, and a radio device 13 for communicating and relaying with the network radio 12a and the portable radio 11 having no ID code outside the network.
It is composed of 12b is another network radio, 1
Reference numeral 4 denotes a base station for relaying a network radio.

The relay operation of the network radio station 12 is as follows. When the ID code of the partner station 12b in the network is input and transmitted on the keypad of the portable radio 11 which cannot use the network, the ID code is transmitted to the network radio station 12 Of the other station 12b
Is detected, the network radio 12a
The base station 14 attaches its own station ID code to the detected ID code, modulates the transmission frequency, and transmits it to the base station 14. The base station 14 relays and transmits the received ID code. When the other station receives and detects its own station ID code, it transmits the ID code of the network radio station 12 of the transmission source and a recognition signal with the identification code. When the recognition signal is relay-transmitted by the base station 14 and received by the network radio 12a of the network radio station 12, a communication line is formed and communication becomes possible only after the network radio station 12a of the portable radio 11 It is used for relaying, and communication between the portable wireless device 11 and the network wireless device 12b can be performed by linking the network wireless device 12 and the base station 14 to become a relay station.

On the contrary, when the network radio station 12 receives a signal from the inside of the network, the network radio 1
The CPU 13 in 2a decodes and detects the data in the received signal and identifies whether or not it matches the ID code of its own station. If the signal is the ID code of the own station, a recognition signal with the ID code of the other station is transmitted to the base station 14, and then the mute circuit 126 is unmuted and the speaker amplifier 127 and the speaker 128 are turned off. Activate. On the other hand, a part of the demodulated output of the network radio device 12a is transmitted to the radio device 13, and the switch circuit 138 modulates the transmission frequency by the modulating unit 132 and sets so that the antenna 130 can transmit through the transmitting unit 131 to perform network communication. And the portable wireless device 11 is in a relay state.

FIG. 3 shows a portable radio device according to the present invention communicating.
Figure showing various communication linesSo,No network
Line station 12, network radio station 15, portable radio 11
a, 11b, 11c, and 11d, and the base station 14. Mobile phone
Network radio station 12 is used for
The portable radios 11c and 11d are network stations.
The wireless station 15 is a relay station. Therefore, the portable radio 11
The communication line that a communicates with is a communication lineNo portable
The line machine 11a is located in the area of the network radio station 12.
Communication with the band radio 11b is described in detail in the above paragraph 0012.
The portable device is relayed by the wireless device 13 in the described manner.
A communication state is established with the band wireless device 11b.In communication lines
It communicates with the network radio station 12. Communication line
Indicates that the portable wireless device 11a has no network
lineStation15 and the ID of the network radio station 15
After entering the code and submitting,Network radio station 12
Network I consisting of ID code of partner station and own station
Send the D code. I received this ID codebase station
14 is relaydo itID code in network radio station 15
Transmitted and received by the network radio station 15
By transmitting the identification signal, the portable wireless device 11a and the network
A communication line is formed with the work radio station 15. Communication times
The line is a portable radio that communicates with the network radio station 15.
11d, and in this case,Portable radio
ID of the network radio station 15 in the call signal of the
And send. Communication up to network radio station 15
Is the same as the communication line. Network radio station 15 is I
Because there is a D code and a call signal,
Relay the portable wireless device 11d in the manner described and make a call
Be in a state. Therefore, in the case of the present invention, communication,,,
All communication lines can be used.

FIG. 4 is a flow chart showing how the network radio station selects network communication or communication with a portable radio or relay. The operation of this flowchart will be described in comparison with FIG. First, in step 41, it is determined whether the network wireless device is displayed as a network service. If there is no display, it is out of the network area.
The communication line is referred to the communication line shown in FIG.
The communication line b relays the network radio station 12 and the communication line between the portable radio device 11a and the network radio device 12 by the communication in step 43 can be used.

If there is a network service display in step 41, it means that the user is in the network area, so that network wireless communication in step 44 can be started. At step 45, it is determined whether or not the communication line is connected to the network radio station.
If there is no exchange of the ID code and no exchange of the recognition signal between the network radio stations, only the communication line of the communication of step 50 and the communication line of the communication of step 51 can be used. If there is an ID code exchange and a recognition signal exchange in step 45, a communication circuit by communication in step 46, a communication line by communication in step 47, a network radio station 12 and a base station 1 by communication in step 48.
A communication line between the portable wireless device 11a and the network wireless station 15 can be used with the relay station 4 as a relay station. In addition, the communication between the portable wireless device 11a and the portable wireless device 11d can be made communicable with the network wireless station 12 and the base station 14 and the network wireless station 15 as relay stations by the communication in step 49. As a result, the portable wireless device 11a can communicate with all of the portable wireless devices that communicate with all network wireless stations and network wireless stations within the network area. In step 52, the network communication ends.

[0019]

As described above, the network radio station according to the present invention comprises a network radio and a portable radio, and is a network radio station which also serves as a relay station of the portable radio. ID with
In addition to communication using codes, communication with portable radios within the communication range with the same network radio becomes possible,
It can also communicate with the network radio in the area where this portable radio communicates and communicate with the portable radio in the communication area of the network radio with relay function of the other party communicating with the ID code. Providing the relay function has an advantage that the range of communication can be further expanded.

[Brief description of the drawings]

FIG. 1 is a block diagram of a network radio station having a relay function according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a network communication system using the present invention.

FIG. 3 is a diagram illustrating various communication lines with which a general portable wireless device communicates according to the present invention.

FIG. 4 is a flowchart illustrating selection of a network radio station between network communication and communication with a portable radio and relay operation according to the present invention.

FIG. 5 is a configuration diagram of a conventional network communication system.

FIG. 6 is a diagram illustrating a communication range in the network communication system of FIG. 5;

[Explanation of symbols]

11a, 11b Portable wireless device 11c, 11d Portable wireless device 12, 15 Network wireless station 12a, 12b Network wireless device 13 Wireless device 120, 130, 133 Antenna 121 Transmitter 122 Receiver 123, 136 CPU 124, 137 Data encoder / Decoder data conversion unit 125,138 switch circuit 126 mute circuit 129 antenna unit 127 speaker amplifier 128 speaker 129 antenna unit 131 transmission unit 132 modulation unit 134 reception unit 135 demodulation unit 139 microphone 14 base station

Continuation of the front page (56) References JP-A-9-98462 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04B 7/26 H04Q ⁷ /04-7/38

Claims (1)

(57) [Claims] 1. A network radio station communicating by specifying the destination station ID code via the base station of the network, the network radio network radio stations that communicate with the ID code, no network communication ID code radio Wireless device that communicates with the
Modulation signal between the network radio and a wireless device, connected by connection lines for exchanging the demodulated signals and digital data, Ne
Modulation signal and demodulation between network radio and radio equipment
The network radio station is provided with means for controlling transmission and reception of signals and digital signals .
And communication, to no ID code for network communication radio
Communication and relay characterized by comprising a relay operation for
Network radio station with functions .