JPH06296163A - Radio communication system - Google Patents

Abstract

PURPOSE:To allow a master station to recognize the state of the entire system and to enhance the operating efficiency of the entire channels. CONSTITUTION:A master station A is provided with a means searching an idle channel through the detection of a carrier among plural communication channels, a means sending an ID code of a call destination terminal station and operating communication channel data through a control channel, and a means making voice and/or data communication with the destination terminal station, and each of terminal stations B1, B2,... is provided with a means receiving the ID code and the operating communication channel data and making voice and/or data communication through the designated operating communication channel with the master station A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system capable of efficiently performing voice and data communication between a plurality of wireless stations.

[0002]

2. Description of the Related Art With the recent development of communication technology, the demand for the use of radio waves has greatly increased. In particular, demand is increasing as a means for performing communication within a relatively narrow range such as in a facility or a building.

In response to such demand, for example, a specific low power radio is used. For example, by arranging a plurality of wireless terminal stations in a certain factory, and the master station wirelessly communicating with each terminal station, the device connected to each terminal station can be monitored and controlled.

[0004]

However, in such a wireless communication system according to the prior art, when the terminal station side is the calling station, the terminal station side searches for an empty channel and uses the selected empty channel to perform the master operation. A call will be made to communicate with the station. Therefore, the master station performs wireless communication with a plurality of terminal stations,
The master station cannot manage which channel is used to perform wireless communication with each terminal station, which reduces the efficiency of use of the channel and may prevent efficient wireless communication.

Further, not only the communication between the terminal station and the master station, but when the wireless communication is performed between the terminal stations, the master station completely knows which channel is currently used for the terminal communication. Therefore, the state of each terminal station (communication state, standby state, non-response state, etc.) cannot be grasped. Therefore, there is a problem that the master station cannot immediately communicate with the terminal station when necessary.

An object of the present invention is to provide a wireless communication system which solves the conventional problems described above, allows the master station to grasp the status of the entire system, facilitates communication, and improves the efficiency of the entire system. Especially.

[0007]

A wireless communication system according to claim 1 of the present invention comprises a single master station and a plurality of terminal stations within the communication range of the master station, among a plurality of communication channels. , A communication channel selecting means for selecting a communication channel to be used by searching an empty channel by carrier detection, a terminal station calling means for transmitting an ID code of a callee terminal station and communication channel data to be used on a control channel, and a callee And a communication means for performing voice and / or data communication with the terminal station of the master station by means of the communication channel used, receiving a call signal from the master station on the control channel, and an ID code included in the received signal. Data extraction means for extracting the communication channel data used, and the extracted ID code or the extracted I
A call detection means for detecting the call of itself by the discrimination of the coincidence between the D code and the ID code of itself, and when the call of itself is detected, the voice and / or data of the voice and / or data is transmitted through the communication channel used with the master station. The terminal station is provided with communication means for performing communication.

A wireless communication system according to a second aspect is the wireless communication system according to the first aspect, in which the first terminal station is called and the first communication channel is designated,
The terminal station communication channel setting means for calling the other terminal station and designating the second communication channel, and the voice and / or data transmitted and received on the first communication channel between the first terminal station and the second terminal station. The master station is provided with signal relay means for transmitting and receiving data to and from the second communication channel.

A radio communication system according to a third aspect is the radio communication system according to the first aspect, in which the first terminal station is called, a communication channel for performing inter-terminal station communication is designated, and the second terminal station is called. At the same time, the master station is provided with a terminal station communication channel setting means for designating the communication channel, and each terminal station is provided with inter-terminal station communication means for communicating with other terminal stations through the communication channel.

[0010]

A wireless communication system according to claim 1 comprises a single master station and a plurality of terminal stations within the communication range of the master station, and the communication channel selection means of the master station is one of a plurality of communication channels. , Searches for an empty channel by carrier detection and selects an available communication channel. The terminal station calling means transmits the ID code of the called terminal station and the communication channel data used on the control channel. Then, the communication means performs voice and / or data communication with the called terminal station on the communication channel used. On the other hand, the data extraction means on the terminal station side receives the calling signal from the master station on the control channel and extracts the ID code and the communication channel data used included in the received signal. The call detection means detects that the self is called according to the content of the extracted ID code or when the extracted ID code matches the self ID code. Then, when the call of itself is detected, the communication means performs voice and / or data communication with the master station using the communication channel used.

As described above, the master station searches for an empty channel among a plurality of communication channels by carrier detection and selects a communication channel to be used. Therefore, when the master station is the calling station, the terminal station is of course required. Even if the master station is the calling station and the master station is the called station, the master station always knows the communication channel because the master station selects the communication channel to use. You can

In the wireless communication system according to claim 2, in the wireless communication system according to claim 1, the master station is further provided with a terminal station communication channel setting means and a signal relay means. This terminal station communication channel setting means,
A first terminal station which should perform wireless communication between the terminal stations is called and a first communication channel is designated, and a second terminal station which is the other terminal station is called and a second communication channel is designated. The signal relay means transmits / receives voice and / or data transmitted / received to / from the first terminal station using the first communication channel, to / from the second terminal station using the second communication channel. . As a result, the first terminal station and the second terminal station pass through the master station to the first station.
-Wireless communication is performed using the second communication channel together. As described above, even in the communication between terminal stations, the master station can grasp which communication channel is used by the first and second terminal stations for wireless communication.

In the radio communication system according to claim 3, in the radio communication system according to claim 1, the master station is further provided with a terminal station communication channel setting means and an inter-terminal station communication means. The terminal station communication channel setting means calls the first terminal station and specifies a communication channel for performing inter-terminal station communication, and calls the second terminal station and specifies the same communication channel. Then, the inter-terminal station communication means uses the communication channel to perform another terminal station (a second terminal station if the terminal station itself is the first terminal station, or a first terminal station if the terminal station itself is the second terminal station). Terminal station).

As described above, even in the communication between terminal stations, the master station can grasp which communication channel is used for communication.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, FIG. 16 is a block diagram showing a schematic configuration of a wireless communication system according to an embodiment of the present invention. Figure 1
6, A is a master station, B1, B2, B3, ... B
6 ... are terminal stations. The operation contents of the master station A having such a configuration are as follows.

(1) An empty channel for communication is searched to control the channel use right.

(2) Calls to all terminal stations (broadcast calls), calls of terminal stations in a certain group (group calls) and calls of a specific terminal station (specific calls) are included in the destination station address. Use the group number and terminal number.

(3) The data communication or the voice call is designated to enable mixed communication of data and voice.

(4) Permit communication between terminals and specify a channel to be used.

(5) The state of each terminal station (communication state, standby state, non-response state, etc.) is always grasped.

(6) The position of the terminal station in the communication area is grasped by the received signal strength.

For example, when the master station A is the calling station and one terminal station, a group of terminal stations or all terminal stations are called stations, the master station identifies the destination station number that identifies the terminal station. A call is made by transmitting data indicating which channel is used for communication, and if there is a response from the terminal that is the destination station, communication is started between the terminals. Conversely, when a terminal station is the calling station and the master station is the called station, the terminal station calls with the destination station number that identifies the master station, and the master station responds to this and uses it. Specify the communication channel to the terminal station,
After that, communication is performed using that communication channel.

Next, a line connection procedure between the master station and the terminal station will be described with reference to FIG. FIG. 17 shows RCR STD- which is a standard of radio equipment for a specific low power radio station radio telephone.
20 is a line connection procedure of an automatic channel switching system / duplex system when there is a communication integrated time limit function of 20. In FIG. 17, the left half shows the operation of the calling station and the right half shows the operation of the called station.
"Control channel" is an operation using the control channel,
“Communication channel” indicates an operation on the communication channel.
First, the calling station and the called station both stand by on the control channel, but the calling station side has a carrier channel from a plurality of communication channels, that is, a communication channel not used by any terminal station, Detect as an available channel. After that, perform carrier sense of the control channel, and if the control channel is not used at that time,
Signals and control signals are transmitted on the control channel. Here, “signal” is a signal including a call name corresponding to a so-called call sign, and “control signal” is a signal including a destination station address designating a destination station, a transmitting station address indicating the own station, and data indicating a communication channel to be used. Is. The transmission time T1 of this signal and the response signal is within 0.5 seconds.
The signal and the control signal are received by the called station waiting on the control channel, the contents of the destination station address included in the received control signal are identified, and when the own station corresponds to the destination station, Carrier sense of the control channel is performed, and if there is no carrier, a signal and a response signal are transmitted on the control channel. Here, the “signal” is a signal including the calling name of the own station, like the “signal”, and the “response signal” is the destination station address with the calling station as the destination station and the transmitting station address indicating the own station and For example, it is composed of a command indicating that communication is possible. The transmission time T1 of this signal and the response signal is within 0.5 seconds. The calling station receives this signal and the response signal on the control channel and then
Data communication or voice communication is performed with the called station using the communication channel used previously. The time T2 from the start to the end of this communication is within 3 minutes. In the case of data communication, the elapsed time from the start of communication is counted, and it is controlled so that it is always completed within 3 minutes. In the case of voice call, if 3 minutes elapse, it is automatically Forced to end. After that, the transmission is paused for 2 seconds or more, and the control channel is waited again.

Next, FIG. 18 shows a usage example of each channel when communication is performed between the master station shown in FIG. 16 and a plurality of terminal stations. In FIG. 18, 1CH, 2CH, 3C
H ... 18CH is used as a communication channel, and 19CH is used as a control channel. Further, 9CH of the communication channels are used as a positioning channel for detecting the position of the terminal station between the positioning terminal station and the master station. Here, in the control channel (1), (2),
(3) ... and the communication channel,
The contents of ... are as follows.

First, (1) to (6) are (1) a voice call request between the terminal stations B1 and B2 from the terminal station B1 to the master station (2) a response from the master station to the terminal station B1 (3) a master station From the terminal station B2 to the voice call between the terminal stations and designation of the used channel (for example, 1CH) (4) Response from the terminal station B2 to the master station that the voice call is possible (5) From the master station to the terminal station Call to B1 that voice communication between terminal stations is possible and designation of used channel (1CH) (6) It is a response from the terminal station B1 to the master station.

As shown by this, the voice communication between the terminal stations B1 and B2 is started on the designated channel (1CH in this example).

Further, (7) to (10) are (7) Voice call request from master station to terminal station B3 and designation of used channel (for example, 2CH). (8) Voice call from terminal station B3 to master station. (9) Voice call request from master station to terminal station B4 and designation of used channel (for example, 5CH) (10) Response from terminal station B4 to master station indicating that voice call is possible is there.

As a result, the master station carries out a voice call with the terminal station B3 using the communication channel 2CH and the terminal station B4 using 5CH, as will be shown later.
Make a voice call to and from. However, in this case, the master station relays the voice signal, and the voice call is substantially performed between the terminal stations B3 and B4. Note that (1) to (6)
In the examples shown in and, an example of making a call between terminal stations using a single communication channel is shown, and in (7) to (10) and, an example of making a call between terminal stations using two communication channels is shown. However, this is merely for convenience of description, and in an actual system, either one of the methods may be used to make a call between terminal stations. The former method has the advantage of saving the number of channels used, and the latter method has the advantage of
There is no need for means for operating one of the terminal stations that conducts a call between the terminal stations as a master station and the other terminal station as a slave station, and there is an advantage that the configuration of the terminal station is not complicated.

Returning to the explanation of FIG. 18, (11) is a request for data communication from the master station to the terminal station B5 and designation of a channel to be used (3CH), and (12) is communication from the terminal station B5 to the master station. It is a response to that effect. Thereby, thereafter, data communication is performed between the master station and the terminal station B5 by using 3CH as shown in.

Further, (13) is from the master station to the terminal station B6.
Calling voice calls to and using channels (4CH)
(14) is a response indicating that voice communication is possible from the terminal station B6 to the master station. As a result, a voice call is made between the master station and the terminal station B6 by using 4CH as shown later.

Further, (15) is a call for data communication from the terminal station B7, which is a positioning terminal station, to the master station, and (16)
Is a response indicating that data communication is possible from the master station to the terminal station B7 and designation of a used channel (19CH). As a result, as shown below, the positioning terminal station B
7 uses 19CH to transmit positioning data to the master station.

Further, (17) is a call for data communication from the terminal station B8 which is a positioning terminal station to the master station, and (1
8) is a response indicating that data communication is possible from the master station to the terminal station B8 and designation of a used channel (19CH). As a result, the positioning terminal station B8 transmits positioning data to the master station using 19CH, as will be shown later. As a result, the master station receives each positioning data from each positioning terminal station.

A specific example of the wireless communication system shown in FIG. 16 will be described below using the golf course management system as an example.

First, the overall structure of the golf course management system is shown in FIGS. FIG. 1 shows a system mainly provided in the clubhouse, and FIG. 2 shows a system provided on the course side. The unit shown as PC in FIG. 1 is a personal computer, and each personal computer includes a personal computer main body, a keyboard, and a CR.
It consists of T. A LAN (Local Area Network) is configured via the network 24, and for example, NETWARE manufactured by Novell, Inc. in the United States is used. The personal computer 1 is used as a file server that manages various data required for the golf course management system by using the external storage device 2 including a hard disk. The PRT is a printer. The personal computer 3 and the printer 4 connected to the personal computer 3 are provided in the office and perform reservation work, member management, salary management, financial management, office work, and the like. The personal computer 5 and the printer 6 connected to the personal computer 5 are provided in a caddy room and are used for caddy work. The personal computer 7 and the printer 8 connected to the personal computer 7 are provided at the front desk to perform front office work. The personal computer 9 has a PO
The S terminal 10 is connected. These are set up in the pro shop and are used for sales operations.

In the master room in FIG. 1, reference numeral 12 is an audio matrix switcher for switching the input / output connection between multiple inputs and multiple outputs of audio signals. The personal computer 11 controls the matrix switcher 12 and a master unit described later, and acts as a transponder. A speaker 25 for audio output to the master room is provided in the housing of the matrix switcher 12, and a microphone 26 for audio input from the master room is connected. The telephone 13 is connected to the voice matrix switcher 12 and is used for making an outside line call between the master room and the public line, or for making an outside line call between the master terminal and the player side terminal to be described later via the master. This telephone is a personal computer 11
The mixed voice is transmitted to the other party of the outside line call as described later. A graphic monitor 1 is provided on the other personal computer 15 in the master room.
6 are connected. CR of personal computer 15
T is mainly used as a text monitor and displays various management information described later. The entire view of 18 holes is displayed on the graphic monitor 16, and the progress of the game on the entire golf course is displayed graphically. Normally, the operator in the master room gives appropriate instructions to a caddy carrying the player side terminal while monitoring the display contents of the personal computer 15 and the graphic monitor 16. 34a, 3
Reference numerals 4b ... 34n are master units, which perform wireless communication with a player side terminal or the like. These are composed of a plurality of transmitting / receiving units so that a plurality of channels can be used simultaneously. These master units 34 are installed on the roof of the master room.

In the restaurant shown in FIG. 1, a so-called ordering controller 18 for the restaurant is connected to the personal computer 17. The personal computer 17 uses this to perform sales operations in a restaurant. The wireless transfer station 19 is a transceiver that performs wireless communication with a handy terminal carried by a customer service person. The printer 20 is provided in a kitchen, for example, and issues a cooking instruction slip, and the printer 21 is provided for accounting and issues an account slip. Personal computer 22
Is connected to a public line via a modem 23. This is connected, for example, to a personal computer provided in a course shop described later via a public line, and the personal computer in the course shop is connected to the network 24.

In FIG. 2, 34 is the master unit 34 shown in FIG. Since the diagram showing the configuration of the golf course management system is separated into FIG. 1 and FIG. 2, the configuration on the club house side in FIG. 2 shows only the master unit 34 which is a part thereof. In FIG. 2, reference numerals 35a and 35b are player side terminals mainly carried by the caddy, and are master units 3
Wireless communication is performed with the mobile terminal 4. 36a and 36b are positioning terminals, which receive radio waves transmitted from the player-side terminals 35a and 35b and the like, and indicate a transmitting station number indicating from which player-side terminal the radio waves are transmitted and the direction in which the station is received. Data such as the intensity of the received radio wave is obtained and transmitted to the master unit 34. The personal computer 11 in the master room shown in FIG. 1 receives signals from the positioning terminals 36a, 36b, etc., and sends the signals to the player terminals 35a, 35b.
Etc. position detection is performed. The positioning terminals 36a and 36b operate using the solar systems 37a and 37b as power sources. In FIG. 2, reference numeral 38 is a relay, which relays between the player-side terminal 35 and the master unit 34. For example, the radio waves from the player side terminal 35c are received from a relatively distant place such as the other side of the hill, and the radio waves are received by the master unit 3 on a different channel.
4 and retransmits the signal received from the master unit 34 to the player side terminal 35c on a different channel. This repeater 38 also operates using the solar system 39 as a power source.

In FIG. 2, reference numeral 40 denotes a golf cart provided with a cart terminal 41. The cart terminal 41 has the same function as the player-side terminal 35, and controls the traveling of the cart 40 by operating the player-side terminals 35a and 35b.

In the course shop shown in FIG. 2, a personal computer 32 is connected to the POS terminal 31. The personal computer 32 performs sales business processing by the POS terminal 31, and also performs data transmission with the personal computer 22 shown in FIG. 1 connected to the public line via the modem 33.

Further, a course shop terminal 30 is provided on the roof of the course shop, and a speaker 28 is provided on the control unit 27 of the course shop and a microphone 29 is connected thereto. Control unit 2
7 is a master unit 34 using the terminal 30 for the course shop
Alternatively, wireless communication is performed with the player-side terminal 35.

Next, the structure of the player side terminal device is shown in FIG. In FIG. 3, reference numeral 42 is a housing, and 43 is an antenna protruding above the housing 42. A display unit 44, a key input unit 45, a speaker 46 and a microphone 4 are provided on the front surface of the housing 42.
7 is provided. The display section 44 shows the score, course information,
Display messages, rankings, player information, etc. The key input unit 45 is used when a score is input, a message is read, a message is transmitted, various other information is read, or a voice call is made. Speaker 4
Reference numeral 6 is used during voice communication and for voice notification such as synthetic voice and warning sound. The microphone 47 is used during a voice call. Case 4
2 is provided with an input / output terminal for audio signals and the like on the right side as viewed from the front. In the example shown in FIG. 3, a waterproof cover 48 for waterproofing those terminals is covered.

FIG. 4 is a plan view showing only the display section and the key input section of the player side terminal device shown in FIG. Figure 4
In, the numeric keypad of the key input unit 45 is used for inputting various numerical values, and the arrow mark cursor movement key is used for moving the cursor displayed in the display unit 44 in that direction. Further, F1, F2, F3, and F4 are function keys, respectively, and have a key function displayed at the bottom of the display unit 44. In this example, operating the F1 key enters the score input mode, operating the F2 key displays the course information, and operating the F3 key displays the received message and sends the message. By operating the F4 key, the display of the OUT / IN score can be switched. In the key input section, "CART" is used to control the cart, and "MENU" is used.
Is used for switching the function key display and returning to the main menu from various processing states. The "call" key is used when making a voice call, and the "call end" key is used when ending a voice call.

Next, FIG. 5 shows the configuration of the positioning terminal 36 as an external view. In FIG. 5, reference numeral 50 is a transmission / reception unit on the positioning terminal station side, and 53 is a transmission / reception antenna thereof.
A radiator 51 of a receiving antenna for positioning is attached to the transmitting / receiving unit 50 by using the case thereof. The reflectors 52a, 52b, 5 are arranged around the radiator 51 in four directions.
2c and 52d are arranged. In addition, in FIG.
Is a control box that performs automatic radio wave direction detection control using the antennas 51 and 52a to 52d and control of the transmission / reception unit 50. These are provided on one mast.

Next, a positioning method using the positioning terminal shown in FIG. 5 will be described with reference to FIG. In FIG. 6, 36a,
36b and 36c respectively indicate the position of the positioning terminal, and 35 indicates the position of the player side terminal. Radio wave of the control channel from the player-side terminal 35 (radio wave of the frequency transmitted from the player-side terminal among the two frequencies forming the control channel)
Is transmitted, the positioning terminal 36a detects that the radio wave has been received from the θa direction with reference to the reference azimuth (for example, north), and the positioning terminal 36b detects that the radio wave has been received from the θb direction. Furthermore, the positioning terminal 36c is -θ
Detects reception of radio waves from the c direction. At the same time, each positioning terminal reads the transmission station number transmitted from the player-side terminal 35. Each positioning terminal stores the received transmitting station number, receiving direction, and its radio field intensity data together with time data, and transmits the stored contents to the master in response to a call from the master. Based on these data, the personal computer 11 in the master room determines the intersection point of the straight lines extending from each positioning terminal in the receiving direction based on the known position data of each positioning terminal and the reception direction data of each terminal station. Obtained as the position of the player side terminal. At that time, when the positioning data is received from three or more positioning terminals, the one with the highest radio field intensity is given priority, and the weighting or averaging process is performed according to the radio field intensity to determine the positioning accuracy (accuracy). Increase. Since the positioning terminal receives the radio wave transmitted from the player side terminal and detects the direction thereof, if the player side terminal and the master do not communicate with each other, the position of the player side terminal is determined. It cannot be detected. Therefore, the master requests a dummy signal transmission to the player-side terminal that has not transmitted radio waves for a certain period of time. As a result, the master can detect the position of the player-side terminal, which is not in communication, at regular intervals. Further, in the above example, each positioning terminal stores the data of the received transmitting station number, the receiving azimuth and its radio field intensity together with the time data,
Although the stored contents are transmitted to the master in response to the call from the master, as another method, each positioning terminal sends the received transmission station number, reception direction, and its signal strength data to the master each time. You may make it transmit.
However, in that case, in order to avoid collision of positioning data transmitted from multiple positioning terminals, each positioning terminal generates a random number based on the terminal number and time, and receives radio waves from the player side terminal. Until the positioning data is transmitted, the delay time due to the random number is individually provided.

Next, FIG. 7 is a block diagram showing the overall configuration of the positioning terminal. In FIG. 7, the switching signal generation circuit 55
Indicates the directional direction of the positioning antenna by the radiator 51 and the reflectors 52a to 52d shown in FIG.
Switch repeatedly each time.

The receiving circuit 56 receives the signal received by the radiator 51 shown in FIG. The bandpass filter 57 extracts a signal component having a center frequency of 60 Hz, for example, corresponding to the frequency of the switching signal of the switching signal generation circuit 55. The phase comparison circuit 58 compares the phase of the switching signal and the signal component of 60 Hz included in the received signal. The A / D converter 59 converts the comparison result into digital data. The microprocessor 61 reads the A / D converted value and converts it into azimuth data of the received signal. The modem 60 demodulates the received signal and converts it into a serial data string. The microprocessor 61 reads the signal of the modem 60 and extracts the transmitting station number from the data included in the data string. The transmission / reception unit 50 has the same basic configuration as the player-side terminal shown in FIG. 5 (however, the display unit, the key input unit, the speaker, and the microphone are unnecessary). The transmission / reception unit 50 receives a call from the master unit and performs response control under the control of the positioning control unit 61,
The data provided from the positioning control unit 61 is transmitted to the master unit as positioning data.

Next, FIG. 8 is a block diagram showing the configuration of the transmission / reception circuit provided in each transmission / reception unit 50 of the master unit 34, the player side terminal 35 and the positioning terminal. In FIG. 8, 74 is a local oscillation circuit that determines the reception frequency, and 73 is a PLL circuit that sets the local oscillation frequency based on CH setting data given from the outside. Antenna duplexer 62, high frequency amplifier circuit 63, mixing circuit 64,
The intermediate frequency amplification circuit 65 and the FM detection circuit 66 form a reception circuit together with the local oscillation circuit 74, and the PLL circuit 73
The set frequency is received by the CH setting data given to the. The comparator 67 generates a signal indicating the presence or absence of the carrier component of the received signal. The comparator 68 converts the received signal into a serial binary digital data string and outputs it as received data. The amplifier circuit 69 amplifies the received audio signal and drives the speaker. Further, in FIG. 8, reference numeral 71 denotes an oscillation circuit for determining the transmission frequency, and 70
Is a PLL circuit that sets the oscillation frequency based on CH setting data given from the outside. The modulation circuit 75 converts the transmission data, which is a binary serial data string, into MSK
The modulated signal is supplied to the oscillation circuit 71. The amplification circuit 76 amplifies the microphone signal, and the modulation circuit 77 FM-modulates the oscillation frequency of the oscillation circuit 71 according to the strength of the audio signal. The transmission amplifier circuit 72 power-amplifies the transmission signal.

Master unit 34, player side terminal 35
A control circuit for giving CH setting data and transmission data to the transmission / reception circuit shown in FIG. 8 and reading the received reception data is connected to each transmission / reception unit 50 of the positioning terminal. Next, the configuration of those control circuits is shown.

FIG. 9 is a block diagram showing the structure of the control circuit of the master unit. In FIG. 9, the CPU 80 is the RO
A program written in advance in M81 is executed to control the transmission / reception circuit of the master unit. The RAM 82 is used as various working areas when executing the program. The CPU 80 reads the received data and the carrier detection signal via the I / O port 83,
The transmission data is output via the I / O port 84, and the I / O
Two CH setting data are output via the port 85.
Further, the CPU 80 outputs the presence / absence of a carrier and received data to the personal computer (11 in FIG. 1) in the master room through the I / O port 86, and reads the transmitted data from the personal computer in the master room.

FIG. 10 is a block diagram showing the configuration of the control circuit of the player side terminal. In FIG. 10, the CPU 90 executes a program written in advance in the ROM 91 to control the transmitting / receiving circuit of the player side terminal. The RAM 92 is used as various working areas when executing the program. The CPU 90 reads the received data and the carrier detection signal through the I / O port 93, outputs the transmitted data through the I / O port 94, and the I / O port 95.
CH setting data is output via. Further, the CPU 90 reads the key operation content of the key input unit 45 and writes the display data to the display memory of the LCD controller 96. The LCD controller 96 creates a display signal from the contents of the display memory and outputs the display signal to the display unit 44 which is an LCD panel.

FIG. 11 is a block diagram showing the configuration of the control circuit in the transmission / reception unit (50 in FIG. 7) provided on the positioning terminal station side. In FIG. 11, the CPU 10
0 executes a program written in advance in the ROM 101 to control the transmission / reception circuit. The RAM 102 is used as a working area when executing the program.
The CPU 100 reads the received data and the carrier detection signal via the I / O port 103, and the I / O port 10
4 to output transmission data, I / O port 105 to output CH setting data, and I / O port 1
Data is input to and output from the positioning control unit (61 in FIG. 7) via 06.

Next, FIG. 12 shows a connection relationship between the master unit 34 shown in FIG. 1, the audio matrix switcher 12 and the personal computer 11. In FIG. 12, 34a and 34b are master units, respectively.
(In the figure, only two master units are shown for simplification of the drawing.) 110a and 110b are conversion boxes for converting a logic level voltage signal and a current signal, and 111 is a personal computer 11 for converting R signals.
It is a level converter that converts the level of a signal input / output in the S-232C format and also performs voltage-current conversion. This level converter 111 and conversion box 110
Transmission / reception between a and 110b is a two-wire system, and the conversion boxes 110a and 110b are commonly connected to each line. Further, in FIG. 12, the audio matrix switcher 12 has a plurality of input terminals and output terminals for audio signals,
The combination of the input and output is switched according to the control signal given from the personal computer 11. In the example shown in the figure, the output terminal (SP terminal) of the master unit 34a is connected to the speaker 25, and the master unit 34a
Since the input terminal (MIC terminal) of is connected to the microphone 26, it is possible to perform a voice call between the master room and another terminal by using the master unit 34a. here,
If the connection is made as shown by the broken line, the master unit 34
The audio output signal of a is audio-input to the master unit 34b, and the audio output signal of the master unit 34b is audio-input to the master unit 34a. As a result, a voice call between the slaves can be made between the player terminal, which is the call destination of the master unit 34a, and the player terminal, which is the call destination of the master unit 34b, via the master unit 34a and the master unit 34b. it can. As shown in FIG. 8, each player side terminal can independently set the transmission and reception frequencies on the same channel. Therefore, if one side is set as the master side and the other side is set as the slave side, the audio on the master side is set. It is possible to make a direct call between handset units without going through the matrix switcher. Master units 34a, 34
b has a data serial input / output port in addition to an audio signal input / output terminal so that data to be transmitted can be serially sent to the RX terminal and received data output from the TX terminal can be serially read. it can. The personal computer 11 can set which master unit is used for which channel by sending the CH setting data together with the identification code of the master unit through the RS-232C port. Normally, one of the plurality of master units is dedicated as a control channel, the other one is dedicated for communication with the positioning terminal, and the other master unit is used for voice communication or data communication with the player side terminal, for example. To use. Further, in the example shown in FIG.
The personal computer 11 has each master unit 34.
Although the channels are designated for the a, 34b and the like via the line, one of the plurality of master units can wirelessly communicate with another unit.
You may make it specify a channel. However, in that case, it is necessary to set the one unit as the master unit side and the other unit as the slave unit side.

Next, FIG. 13 shows an example of a signal format for wireless communication between terminals such as between the master unit and the player side terminal or between the master unit and the positioning terminal. In FIG. 13, a bit synchronizing signal S1, a frame synchronizing signal S2, and a calling signal S3 are signals for transmitting a calling name defined as a standard of the radio equipment for a specific low power radio station radio telephone. In this embodiment, specific low power radio stations are used for the master unit, the player side terminal, the positioning terminal station side transmitting / receiving unit, etc., but the present invention is not limited to this. Continue,
The destination station address S4, the transmission station address S5, the control data S6, the information S7 and the FSC S8 are the frame body, and the destination station address S4 is the call number (group number and player side terminal number) of the destination station and the transmission station address S.
5 is a call number (group number and player side terminal number) of the own station. The call number of the destination station and the call number of its own station correspond to the "ID code" according to claim 1. As shown in FIG. 13, the control data S6 includes a control code S61, a command code S62, a transmission packet number S63, and a reception packet number S64. Here, the control code S61 is, for example, a code indicating "normal reception notice", "communication end", "error", "request refusal", "request cancellation (communication end)", and the command code S62 is
For example, "voice communication request", "voice communication", "message transmission", "score data transmission request", "score data transmission preparation", "score data transmission", "competition data transmission request", "competition data transmission channel". , “Competition data transmission”, “course information transmission channel”, “course information transmission”, and the like. In the frame body, the information S7 is data to be sent together with the control data S6. For example, if the command code S62 of the control data is "voice call request", the other party number, if "voice call", the permitted channel number, the other party The destination number and the volume, and the "score data transmission request" include the use-permitted channel number and the hall number. FSC S8 is the CRC value of the frame body used for error checking. The transmission packet number S
63 and the reception packet number S64 are used to retransmit the data in packet units when a data transmission error occurs, but the transmission packet number S63 and the reception packet number S64 may be included in the information S7.

Next, FIG. 14 shows a display example of the graphic monitor 16 in the master room shown in FIG. In this way, the position of the player-side terminal carried by the caddy, the caddy name, etc. are displayed on the graphic monitor 16 along with the entire view of the 18 holes. In FIG. 14, “a” indicates the caddy names “Seki” and “Yamada” of the group waiting for the start of the OUT game, and “b” indicates the caddy names “tsu” and “tsu” of the group waiting for the start of the IN game. It is a display of "Togawa". Further, c indicates the hole number "1", and the text information of the hole whose hole number is shown in a different color as shown in the figure is displayed on the text monitor side described later. Also, d is the display of the caddy names "Ishii" and "Ueda" of the group waiting in the tee ground or behind it, and e is the caddy name "Imai" of the group playing on the 3rd hole course. Is displayed, and f indicates the position of the player-side terminal carried by the caddy “Imai”. From this display content, the group with the caddy name "Himuro" played slowly, and there were two groups waiting in the tee ground of the first hole or behind it,
Moreover, it can be seen that no play has already taken place in the second hole, and in this case, for example, for the caddy "Himuro", the "competition at the rear is out of the predetermined fixed transmission message. Please send a message such as "Please." From the master room.

FIG. 15 shows a screen of a text monitor displayed on the CRT of the personal computer 15 in the master room shown in FIG. In FIG. 15, a indicates the usage status of the selected hole. Here, "Today's number" is a serial number for each day, "Competition name" is the name of the competition that the group is doing, "Caddy name" is the caddy name of the group, and "Start time" is currently playing The start time of the half you are in, "the time required for the previous hole" is the time required to play the previous hole, and "waiting time" is the waiting time until you hit the first shot in the hole you are currently playing. is there.

In FIG. 15, b and c show the details of the sets waiting for the start of OUT and IN, respectively. Here, the "start time" is the scheduled start time of the half that is about to be played, "the time required for the front hole"
For teams that have already played half, the time it took to play the last hole of the previous half, "waiting time" starts from the scheduled time, subtracting the start (planned) time from the current time Is the time it takes.

In FIG. 15, d shows the current date and time and the remaining time of the voice call when the voice call is made from the master. e indicates the usage status of each master unit managed and controlled by the master. Here, the numeral is the channel number in use, and one with a lightning bolt symbol indicates that data is being communicated and two with a lightning bolt symbol is during a voice call. In addition, those without a numerical value display are unused, and those with a cross mark show the failure status of the master unit. Here, 19ch is the control channel, 9
One master unit is dedicatedly assigned to each ch as a communication channel for positioning data.

In FIG. 15, f shows a list of messages transmitted to the player terminal carried by Caddy. Here "send time" is the time when the message was sent,
The "caddy name" is the caddy name of the destination, the "type" is whether the type of the transmitted message is broadcast or individual, and the "message" is the content of the transmitted message. In the display of the message contents, a message requiring a response is displayed in red, and a message not requiring a response or a message receiving a response is displayed in green. In this example, at 11:02, the caddy "Ichikawa" individually sends the message "It is the start time." At 13:54, the caddy "Toyota" says "It is 10 minutes before the start."
Message was sent individually, and at 10:31, the message "Weather is getting worse." Was broadcast, indicating that the reply from caddy "Yamaguchi" has not been returned yet. .

In FIG. 15, g indicates a message received from the player-side terminal carried by the caddy. Here, "reception time" is the time when the message was received, "caddy name" is the name of the caddy that sent the message, "position" is the hole number of the caddy at that time, and "message" is the content of the received message. The display of this message content is
Messages that require a response are displayed in red, and messages that do not require a response or have responded are displayed in green.

Next, the processing contents and processing procedure as a transponder of the personal computer 11 provided in the above-mentioned master room will be described below.

FIG. 19 shows a command FIFO used in the main routine described later. In the command FIFO, "main" is a main event, which is used to perform processing such as receiving a signal from a control channel and issuing a command corresponding to the signal, as will be described later. The "command" is, for example, competition data. It is used to specify various commands such as reading from a file and transmitting to a player side terminal station.

In the command FIFO, a "main event" is always inserted between the "command" and the "command", and when the events are sequentially read from the command FIFO and the main processing described later is performed, a long-term control is performed. Prevents the situation where the channel is not read. After executing all the commands, only the "main event" is left in the command FIFO so that the control channel can always be read.

20 and 21 are flowcharts showing the processing procedure of the main processing. First, as shown in FIG. 20, the command FIFO is initialized, the master unit control driver described later is initialized, and the matrix switcher control driver is initialized. After that, the state of the control unit (master unit used for the control channel (19CH)) is inquired to determine the state of the control unit. Then, the positioning unit (master unit used for communication of positioning data) is inquired to determine the positioning unit. Subsequently, a main event is added (written) to the command FIFO, and a main count (a counter for determining whether or not some kind of transmission from the master is necessary at regular intervals) is initialized.
The "control unit inquiry" and the "positioning unit inquiry" shown in FIG. 20 may be performed in the "master unit control driver initialization" shown in FIG.

Then, as shown in FIG. 21, command F
The event is extracted from the IFO, and the process according to the extracted content is performed. If the extracted content is the main event, the processing shown in FIG. 22 and thereafter is executed. If the content extracted from the command FIFO is a command, the process according to the command is performed, data to be transmitted such as score data is transmitted to the terminal, and this executed command is deleted from the command FIFO. Then, while waiting, the main loop shown in FIG. 21 is repeated.

In the main event process, as shown in FIG. 22, first, a received signal from the control unit is input, and if there is any signal, that signal is decoded and a command is created. If the received signal requests a voice call, then FIG.
The processing shown in FIG. 24 and subsequent steps is executed if the processing shown in FIG. For other commands, the command code is added to the command FIFO. After that, if the last of the command FIFO is not the main event, the main event is added here. The voice call process may be performed by executing a command, similar to the process of sending a message.
In that case, the judgment of "voice call" and the judgment of "call between handset" in FIG.
24 and the process of FIG. 24 is the "command execution" shown in FIG.
Will be done in.

In the main event process, as shown in FIG. 25, the main count is then incremented by 1 and it is determined whether or not the result has reached the specified number of repetitions. If the prescribed number of repetitions has not been reached, the call request from the master is checked, and if there is a request, it is checked whether or not the partner terminal is in use. If it is not in use, the other party is notified that there is a voice call request, and the matrix switcher is switched. After that, the call end command is sent to the command FIFO.
Add to. This call end command includes time limit data (call forced stop time) data that can occupy the channel,
If this call end command is executed, it is determined whether or not the current time has reached the call forcible stop time. If the current time has been reached, the call is forcibly stopped. If not, the call end command is sent to the command FIFO again. The process of adding is performed. As a result, the voice call is automatically terminated when three minutes have elapsed without operating the call end key since the voice call was started. If there is a voice call request from the master and the other party's terminal is in use, FIG.
At (111), the processes after (111) are performed. That is, the master is notified that the call is not established, and if the last of the command FIFO is not the main event, the main event is added.

In FIG. 25, if the value of the main count reaches a specified value, the main count is initialized and it is determined whether or not there is a message to be sent from the master. If there is a message, the message is sent to the command FIFO. Add a command. If there is no message, it is determined whether there is game information to be transmitted next. If there is game information, a game information transmission command is added to the command FIFO. If there is no game information to be transmitted, it is determined whether or not there is other data to be transmitted from the master, and if there is data, a data transmission command is added to the command FIFO.

It should be noted that, in FIG. 25, after the result of the process of "inspecting the call request from the master" is "requested",
The processing up to (110) may be performed by executing a command instead of being performed in this main event processing. In that case, when the "request is present", a step of adding a call request command to the command FIFO may be added to connect to the processing from (110).

By the way, the master unit control driver (1) manages the unit used by the master unit,
(2) Management of channels used by each master unit,
(3) Command output to each master unit, and (4) data input / output to / from each master unit. FIG. 27 is a flow chart showing the processing procedure of the master unit control driver. As shown in FIG. 27, first, if there is a "control unit request", the unit number of the master unit used as the control unit is checked, and it is set as the return value. If there is an "empty unit request", the unused master unit is checked, and if there is an empty unit, the unit number is used as the return value, and if there is no empty unit, the value indicating no empty channel is used as the return value. If there is a "use channel request", check the channels available in the unit specified by the argument, and if there is an empty channel, return the empty channel number as the return value,
If there is no empty channel, the value indicating that there is no empty channel is returned. If "unit channel release", release the unit and channel specified by the argument,
Allowed for use elsewhere. If it is a command, FIG.
As shown in, the processing of each command is performed. "DAT
In the case of "A output", the data of the argument is set to be output to the unit designated by the argument, and if the data output is not normally performed, the error code is set as the return value. If "D
If it is “ATA input”, the data is set to be input from the unit designated by the argument, the data is input, and if not input normally, the error code is set as the return value.

The matrix switcher control driver is an SP (speaker) of two master units.
And the MIC (microphone) are mutually connected, and the microphone and speaker in the master room are connected to the MIC and SP of the master unit. FIG. 29 is a flowchart showing the processing procedure of the matrix switcher control driver.

First, a connection command is used to connect master units to each other (that is, to make a call between slave units via two master units), and the MIC of the nth master unit, which is one designated unit. The SP (voice output) of the m-th master unit, which is the other designated unit, is connected to (voice input), and the SP of the m-th master unit is connected to the MIC of the n-th master unit. If the units are not connected to each other, the master microphone is connected to the MIC of the master unit, and the SP of the master unit is connected to the speaker of the master, thereby enabling the voice call between the master and the terminal. If it is a disconnect command, disconnects the master unit.

The processing contents shown in FIGS. 19 to 26 are similarly performed on the player side terminal side, and communication can be performed regardless of which of the master side and the player side terminal is the calling side or the called side. I am trying.

[0073]

According to the wireless communication system of the first aspect of the present invention, since the status and movements of the entire system are grasped by the master, effective use of communication channels and individual management / group management can be efficiently performed. You will be able to do it.

Further, according to the wireless communication system according to the second and third aspects, the communication between the terminal stations becomes possible, and the situation can be monitored by the master.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a clubhouse side of a golf course management system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a golf course management system on a course side.

FIG. 3 is an external perspective view of a player-side terminal.

FIG. 4 is a plan view showing a configuration of a key input unit and a display unit of the player side terminal.

FIG. 5 is a perspective view showing a configuration of a positioning terminal.

FIG. 6 is a plan view showing a positioning method.

FIG. 7 is a block diagram showing a configuration of a positioning terminal.

FIG. 8 is a block diagram showing a configuration of a transmission / reception circuit.

FIG. 9 is a block diagram showing a configuration of a control circuit of the master unit.

FIG. 10 is a block diagram showing a configuration of a control circuit of a player side terminal.

FIG. 11 is a block diagram showing a configuration of a control circuit of a positioning terminal station side transmission / reception unit.

FIG. 12 is a circuit diagram showing a relationship between a master unit, an audio matrix switcher, and a personal computer connected to them.

FIG. 13 is a diagram showing a signal format of wireless communication performed between a master unit and a terminal or the like.

FIG. 14 is a diagram showing a display example of a graphic monitor in the master room.

FIG. 15 is a diagram showing a display example of a text monitor in the master room.

FIG. 16 is a block diagram showing a configuration of a wireless communication system that is an embodiment of the present invention.

FIG. 17 is a diagram showing a line connection procedure according to the embodiment.

18 is a diagram showing an example of the usage status of each channel in the system shown in FIG.

FIG. 19 is a personal computer 1 provided in the master room
Command FI used for processing as a transponder of No. 1
It is a figure which shows the content example of FO.

FIG. 20 is a flowchart showing a main processing procedure.

FIG. 21 is a flowchart showing a main processing procedure.

FIG. 22 is a flowchart showing main event processing.

FIG. 23 is a flowchart showing main event processing.

FIG. 24 is a flowchart showing main event processing.

FIG. 25 is a flowchart showing main event processing.

FIG. 26 is a flowchart showing main event processing.

FIG. 27 is a flowchart showing processing of a master unit control driver.

FIG. 28 is a flowchart showing the processing of the master unit control driver.

FIG. 29 is a flowchart showing processing of a matrix switcher control driver.

[Explanation of symbols]

12-Voice matrix switcher 25-Speaker 26-Microphone 34-Master unit 35-Player side terminal 36-Positioning terminal 37-Solar system 38-Relay station 39-Solar system 40-Golf cart 41-Cart terminal 43-Antenna 44-Display unit 45-Key input unit 46-Speaker 47-Microphone 48-Waterproof cover of input / output connector 50-Positioning terminal station side transmitting / receiving unit 51-Radiation of positioning antenna 52-Reflector of positioning antenna 53- Transmission / reception antenna of positioning terminal station side transmission / reception unit 50-Control box 110-Conversion box 111-Level converter

Claims (3)

[Claims] 1. A single master station and a plurality of terminal stations within the communication range of the master station. Among a plurality of communication channels, an empty channel is searched by carrier detection to select a communication channel to be used. Voice and / or data on the used communication channel between the used communication channel selection means, the terminal station calling means for transmitting the ID code of the called terminal station and the used communication channel data on the control channel, and the called terminal station. And a data extracting means for receiving a calling signal from the master station on the control channel and extracting the ID code and the used communication channel data included in the received signal, and the extracted ID code. Or a call detection hand that detects your own call by determining whether the extracted ID code matches your own ID code. If, when the self-call is detected, a wireless communication system comprising a communication means for communicating voice and / or data in the used communication channel between the master station comprises a terminal station. 2. The wireless communication system according to claim 1, wherein the first terminal station is called and the first communication channel is designated, and the second terminal station is called and the second communication channel is designated. Signal relay means for transmitting / receiving voice and / or data transmitted / received on the first communication channel between the communication channel setting means and the first terminal station on the second communication channel to / from the second terminal station. A wireless communication system provided for the master station. 3. The wireless communication system according to claim 1, wherein the first terminal station is called and a communication channel for performing inter-terminal station communication is designated, and the second terminal station is called and the communication channel is designated. A wireless communication system comprising a station communication channel setting means in a master station, and each terminal station being provided with terminal-to-station communication means for communicating with other terminal stations through the communication channel.