JP3409271B2 - Communication method and device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a master unit connected to a communication network, and a slave unit connected to the master unit by a wireless line and wirelessly communicating with the master unit by matching a unique call code. A communication method and apparatus in a wireless communication system including the same, and particularly by arranging a reception-only slave set with the same call code as the slave in the same communication area as the slave, simultaneous broadcast communication is enabled. Communication method and device.

[0002]

2. Description of the Related Art Conventionally, as a wireless communication system of this type, for example, a PHS (Personal Handy Phone System), a digital car telephone system and the like are known.

In such a wireless communication system,
Communication is performed by establishing a communication line between a master unit connected to a communication network and a slave unit connected to the master unit by a wireless line by using a control channel and an information channel as wireless channels.

That is, when an incoming call is made from the communication network to the slave unit or an outgoing call is made from the slave unit to the communication network, first, a control channel is used between the master unit and the slave unit to connect between the master unit and the slave unit. A wireless line establishing operation is performed, then the information channel designated by the wireless line establishing operation is transferred, and communication between the slave unit via the master unit and the communication network is performed using the information channel. Is configured.

FIG. 10 is a block diagram showing a schematic configuration of the PHS slave unit 10. In FIG.
This slave 10 includes an antenna 11, an antenna transmission / reception changeover switch 12, a wireless reception unit 13, a wireless transmission unit 14, a time division multiplexing / channel control unit 15, a reception ID determination transmission ID addition unit 16, an ID storage unit 17, a reception control. The signal output unit 18 and the transmission control signal input unit 19 are provided.

Here, the ID storage unit 17 of the slave 10 stores a unique ID (call code) of the slave 10 in a non-rewritable manner. This ID (call code) is PS-ID
Is called and is specified as a character string on the housing of the child device 10.

This PS-ID is indispensable for transmission / reception by the handset 10, and specifies which handset 10 is transmitting the radio wave, and the handset 10 stores its own memory among the received radio waves. The radio wave added with the same ID as the PS-ID is continuously received.

In FIG. 10, the antenna 11 is an antenna for both transmission and reception, and the antenna transmission / reception changeover switch 12 has a radio reception unit 13 for receiving a signal received by the antenna 11 at the timing of time division multiplexing of this communication system.
And the signal from the wireless transmitter 14 is transmitted to the antenna 11.

The radio receiver 13 and the radio transmitter 1 are also provided.
Reference numeral 4 is for performing modulation / demodulation of digital transmission / reception signals, and the time division multiplexing / channel control unit 15 is for performing time division multiplexing of transmission / reception signals by the TDMA-TDD system, switching of control channels and information channels, and transmission / reception management. Is.

Further, the reception ID judgment transmission ID addition section 16
Is a process for discarding signals other than the received signal destined for the own device based on the judgment of the received ID, and adding an ID for identifying the transmitted signal of the own device.

The reception control signal output unit 18 converts the received digital signal into a desired control signal and outputs it to a control device (not shown). The transmission control signal input unit 19 is supplied from a control device (not shown). The processing for converting the obtained control signal into a digital signal is performed.

FIG. 11 shows a communication control procedure when a call is made from the subscriber telephone set 50 connected to the telephone network 40 to the PHS handset (PS) 10.

First, the slave unit (PS) 10 performs position registration with the nearest master unit (CS) 30 (FIG. 11A).
reference). For this position registration, a position registration command is input from the transmission control signal input unit 19 of the slave unit (PS) 10, and the reception ID determination transmission ID addition unit 16 adds the position registration command to this position registration command.
A unique ID of the slave unit (PS) 10, that is, an ID stored in the ID storage unit 17, is added, and this is added to the time division multiplexing / channel control unit 15, the wireless transmission unit 14, the antenna transmission / reception changeover switch 12, the antenna 11. Base unit (CS) 30 via
To the child device (PS) 10 in the parent device (CS) 30.
This is done by registering the ID transmitted from

Next, when a call is made from the subscriber telephone 50, this call is transmitted to the telephone network 40 (see FIG. 11B), and the telephone network 40 makes a call from the subscriber telephone 50. Call setup is performed for the base unit (CS) 30 whose location is registered by the handset unit (PS) 10 corresponding to the telephone number (see FIG. 1).
1 (c)).

As a result, the child device (PS) 10 receives the incoming call from the parent device (CS) 30 (see FIG. 11 (d)).

A parent machine (CS) using this child machine (PS) 10
The incoming call from 30 is received by the antenna 11 of the handset (PS) 10, the antenna transmission / reception changeover switch 12, the wireless reception unit 1.
3, time division multiplexing / channel control unit 15, reception ID determination transmission ID addition unit 16, and reception control signal output unit 18.

When the slave unit (PS) 10 goes off-hook in response to the receipt of the incoming call from the master unit (CS) 30, the subscriber telephone set 50 and the slave unit (PS) 10 make a call.
A telephone call (data communication) is possible via the telephone network 40 and the master device (CS) 30 (see FIG. 11 (e)).

The location registration shown in FIG. 11A is
In response to the input of the position registration command from the transmission control signal input unit 19 of the slave unit (PS) 10, the connection between the slave unit (PS) 10 and the master unit (CS) 30 is performed while maintaining the control channel.
In addition, the call (data communication) shown in FIG. 11E responds to the reception of the incoming call from the parent device (CS) 30 shown in FIG. 11D, and the child device (PS) 10 And parent machine (CS)
This is done by switching the connection with 30 from the control channel to the information channel.

[0019]

By the way, in the above-mentioned conventional wireless communication system, for example, as shown in FIG. 12, broadcast communication is performed with five slave units (PS1 to PS5) 10-1 to 10-5. Considering the case of performing, (b) in FIG.
~ (E) the processing of each slave unit (PS1 ~ PS5) 10
-1 to 10-5, the total time required for this is, as shown in FIG. 12B, each of the slave units (PS1 to PS5) 10-1 to 10-. 5 plus the time required for each, and the required radio resources due to this are slave units (PS1 to PS5) 10-
It corresponds to the number of 1 to 10-5.

As a result, in the conventional wireless communication system, when broadcasting to a plurality of slaves simultaneously, the communication time becomes long and the simultaneous broadcasting cannot be ensured. There was a problem of using many resources.

[0021] Therefore, an object of the present invention is to provide a communication method and device capable of ensuring the simultaneity of simultaneous broadcasts without heavy use of communication resources.

[0022]

In order to achieve the above object, the invention of claim 1 is to verify a unique PS-ID connected to a master unit connected to a communication network and a wireless line to the master unit. In a communication method in a wireless communication system including a slave unit that wirelessly communicates with the master unit, the unique PS that is configured by deleting the transmission function from the slave unit, and is the same as the slave unit. -A plurality of reception-only slaves dedicated to reception having IDs are arranged, and communication information transmitted from the master is received by the reception-only slave when communicating between the master and the slave. It is characterized by performing simultaneous broadcast communication by.

[0023]

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the slave unit dedicated to initiation reception is arranged in the same communication area as the master unit registered by the slave unit. And

According to a third aspect of the invention , in the first aspect of the invention, the reception-only slave unit is connected to an active element such as an actuator, and the slave unit is connected to a passive element such as a sensor. the broadcast communication to control simultaneously the active element, the detection data of the passive elements, characterized in that transmission and reception through the base unit and the communication network.

The invention of claim 4 is characterized in that, in the invention of claim 1, the reception-only slave sets the unique PS-ID by key input of the reception-only slave.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the reception-only slave unit communicates with the slave unit in a state where the slave unit is brought close to the unique PS-I.
It is characterized by setting D.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, the reception-only slave unit is conditioned on the condition that the level of the reception signal from the slave unit exceeds a predetermined threshold value.
It is characterized by setting a unique PS-ID.

[0029] According to a seventh aspect of the present invention, a plurality of parent devices connected to the communication network and the plurality of parent devices are respectively connected to the respective parent devices by wireless lines, and each parent device is verified by checking its own PS-ID. In a communication method in a wireless communication system including a plurality of slave units that perform wireless communication, the above-mentioned unique PS-ID that is configured by deleting the transmission function from each slave unit and has the same unique PS-ID as each slave unit. A plurality of reception-only slaves that are set for reception are placed in the communication area of each master, and when communicating between each master and the slave corresponding to the master, the communication information transmitted from the master is displayed. It is characterized in that simultaneous broadcast communication is performed by receiving by the reception-only slave unit.

According to the invention of claim 8, in the invention of claim 7, the reception-only slave set with the same unique PS-ID as that of the slave is the master whose position is registered by the slave. It is arranged in the same communication area as.

The invention of claim 9 is the invention of claim 7.
In the above, the reception-only slave unit is connected to an active element such as an actuator, the slave unit is connected to a passive element such as a sensor, and the active element is simultaneously controlled by the simultaneous broadcast communication, and the passive element is also connected. Is transmitted and received via the master unit and the communication network.

According to a tenth aspect of the present invention, a master unit connected to a communication network and a slave unit connected to the master unit by a wireless line and wirelessly communicating with the master unit by matching a unique PS-ID. In a communication device including a master unit and a slave unit, the transmission function is deleted from the slave unit, and the same unique PS-ID as that of the slave unit is set. In the communication, a reception-only slave unit that receives communication information transmitted from the master unit to the slave unit is provided.

[0033]

The invention of claim 11 is based on the invention of claim 10.
In the invention, the reception-only slave unit is arranged in the same communication area as the master unit whose position is registered by the slave unit.

The invention of claim 12 is the same as that of claim 10.
In the invention, the reception-only slave unit is connected to an active element such as an actuator, the slave unit is connected to a passive element such as a sensor, and the passive unit is simultaneously controlled by the simultaneous broadcast communication and the passive unit It is characterized in that the detection data of the element is transmitted and received through the master unit and the communication network.

According to a thirteenth aspect of the invention, in the tenth aspect of the invention, the reception-only slave unit is the unique PS-unit.
Rewritable storage means for storing the ID, provided with said storage means, the solid by a key input of the receive-only handset
The existing PS-ID is rewritten.

According to a fourteenth aspect of the present invention, in the tenth aspect of the invention, the reception-only slave unit is the unique PS-unit.
A rewritable storage unit for storing an ID is provided, and the unique PS-ID is rewritten by the storage unit communicating with the slave unit in a state where the slave unit is approached. .

According to a fifteenth aspect of the invention, in the fourteenth aspect of the invention, the storage means is provided on the condition that the level of the received signal from the slave unit exceeds a predetermined threshold value.
The unique PS-ID is rewritten.

[0039] According to a sixteenth aspect of the present invention, a plurality of master units connected to the communication network are connected to the plurality of master units by wireless lines, and the master units are connected to each other by collating unique PS-IDs. In a communication device including a plurality of slaves that perform wireless communication, the above-mentioned unique P that is configured by deleting the transmission function from the slaves and is the same as the slaves.
An S-ID is set, and a plurality of reception-only slave units for receiving communication information transmitted from the master unit to the slave unit at the time of communication between the master unit corresponding to the slave unit and the slave unit. It is characterized by

According to a seventeenth aspect of the present invention, in the sixteenth aspect of the present invention, the same unique PS-ID as the slave unit is used.
Is set in the same communication area as that of the master unit whose position is registered by the slave unit.

The invention of claim 18 is the same as that of claim 16.
In the invention, the reception-only slave unit is connected to an active element such as an actuator, the slave unit is connected to a passive element such as a sensor, and the passive unit is simultaneously controlled by the simultaneous broadcast communication and the passive unit It is characterized in that the detection data of the element is transmitted and received through the master unit and the communication network.

[0042]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram showing an embodiment of a reception-only slave unit adopted in the communication method and apparatus according to the present invention.

The reception-only slave unit 60 shown in FIG. 1 has the transmission function deleted from the conventional PHS slave unit 10 shown in FIG. 10 and also has the I function of the conventional PHS slave unit 10 shown in FIG.
The D storage unit 17 is composed of a non-volatile memory capable of ID rewriting I
It is configured by replacing the D storage unit 21.

It should be noted that, in FIG. 1, parts having the same functions as those of the child device 10 shown in FIG.
The same reference numerals as those used in step 1 are attached.

That is, the reception-only slave unit 6 shown in FIG.
Reference numeral 0 denotes an antenna 11, a wireless reception unit 13, a time division multiplexing / channel control unit 15, a reception ID determination unit 20, an ID storage unit 2
1. The reception control signal output unit 18 is provided.

Here, the antenna 11 is a receiving antenna, the radio receiving section 13 is for demodulating a digital received signal, and the time division multiplexing / channel control section 15 is used.
Is for performing time division multiplexing of received signals by the TDMA-TDD system, switching of control channels and information channels, and reception management.

Further, the reception ID judging section 16 carries out a process of discarding signals other than the received signal destined for itself by judging the reception ID, and the reception control signal output section 18 controls the received digital signal as desired. It is converted into a signal and output to a control device (not shown).

The reception-only slave unit 60 shown in FIG.
The PHS slave unit 10 shown in FIG. 0 is arranged in the same communication area of the master unit as the position-registered master unit, that is, in an area where radio waves reach, and is transmitted from the master unit during communication between the master unit and this slave unit. The transmission information transmitted to this child device 10 is received.

FIG. 2 is a block diagram of the PHS slave unit (P) from the subscriber telephone 50 connected to the telephone network 40 in the above configuration.
S) 10 shows a communication control procedure when a call is made.

First, the slave unit (PS) 10 performs position registration with the nearest master unit (CS) 30, and is a reception-only slave unit within the same communication area as the slave unit (PS) 10. The same ID (call code) as that of the slave unit (PS) 10 is set for 60 (see FIG. 2A).

Here, in this position registration, as in the case shown in FIG. 11, a position registration command is input from the transmission control signal input unit 19 of the slave unit (PS) 10, and the reception ID determination is made in this position registration command. In the transmission ID adding unit 16, the slave unit (P
S) 10 unique ID, that is, the ID stored in the ID storage unit 17 is added, and this is added to the time division multiplexing / channel control unit 15, the wireless transmission unit 14, the antenna transmission / reception changeover switch 1
2, transmit to the base unit (CS) 30 via the antenna 11,
The parent device (CS) 30 is performed by registering the ID transmitted from the child device (PS) 10.

The ID (call code) for the reception-only slave unit 60 is set to the same ID as that of this slave unit (PS) 10.
This is performed by setting (call code) in the ID storage unit 21 of the reception-only slave unit 60. The ID (call code) setting operation for the reception-only slave unit 60 will be described later in detail.

Next, when a call is made from the subscriber telephone 50, this call is transmitted to the telephone network 40 (see FIG. 2B), and the telephone network 40 makes a call from the subscriber telephone 50. The call setup is performed for the parent machine (CS) 30 whose location is registered by the child machine (PS) 10 corresponding to the telephone number based on FIG.
(See (c)).

The reception-only slave unit 60 does not participate in the processing of FIG. 2 (b) and the processing of FIG. 2 (c).

When the call setup is performed from the telephone network 40 to the parent machine (CS) 30 whose location is registered by the child machine (PS) 10, the child machine (PS) 10 receives the call from the parent machine (CS) 30. The call is received (see FIG. 2 (d)).

Master device (CS) by this child device (PS) 10
As in the case shown in FIG. 11, the reception of the incoming call from 30 is performed by the antenna 11, the antenna transmission / reception changeover switch 12, the wireless reception unit 13, the time division multiplexing / channel control unit 15, the reception of the slave unit (PS) 10. The ID determination is performed via the transmission ID addition unit 16 and the reception control signal output unit 18.

At this time, the reception-only slave unit 60 has the same ID (call code) as that of the slave unit (PS) 10, and therefore, like the slave unit (PS) 10, the master unit (CS). ) 3
An incoming call from 0 is received (see FIG. 2 (d)).

Master device (CS) by this reception-only slave device 60
The incoming call from 30 is received by the antenna 11 of the reception-only slave unit 60, the wireless reception unit 13, the time division multiplexing / channel control unit 1.
5, reception ID determination unit 20, reception control signal output unit 18.

When the slave unit (PS) 10 goes off-hook in response to the receipt of the incoming call from the master unit (CS) 30, the subscriber telephone set 50 and the slave unit (PS) 10 call each other.
A telephone call (data communication) is possible via the telephone network 40 and the master device (CS) 30 (see FIG. 2 (e)).

Further, at this time, the reception-only slave unit 60 receives the data transmitted from the master unit (CS) 30 to the slave unit (PS) 10.

Here, since the reception-only slave unit 60 does not perform any transmission, it does not affect the call connection by the master unit (CS) 30 at all.

FIG. 3 shows a reception-only slave unit 6 having the above structure.
It shows the total communication time and the usage state of the required radio resource when the simultaneous broadcast is performed using 0.

In FIG. 3, four reception-only slave units (reception-only slave units 1 to 4) 60-1 to 60-are utilized by utilizing data transmission from the master unit (CS) 30 to the slave unit (PS) 10. Four
It shows the case where the broadcast is carried out with respect to.

In this case, as shown in FIG. 3A, for the master unit (CS) 30 to the slave unit (PS) 10, one-time data shown in (b) to (e) of FIG. Since only the transmission process is performed, as shown in FIG. 3B, the total time required for this broadcast is only the time corresponding to one child device (PS) 10, and its required radio resource is also one. Handset (PS) 10
Only those that correspond to.

FIG. 4 shows an embodiment of a communication system of a factory manufacturing line constructed by applying the communication method and apparatus of the present invention.

In FIG. 4, reference numeral 70 denotes a factory production line. Along the line 70, a plurality of parent devices CSa ...
CSc is arranged.

In addition, in the communication area of each of the parent devices CSa to CSc, that is, in the range where the radio waves reach, the child device PS1 and the plurality of receiving-only child devices 1-1 to 1-4, the child device PS2 and the plurality of receiving-only terminals are provided. Machines 2-1 to 2-3, a slave PS3, and a plurality of reception-only slaves 3-1 to 3-4 are arranged, respectively.

Here, in this communication system, a slave unit PS1 and a plurality of reception dedicated slave units 1-1 to 1-4, a slave unit PS2 and a plurality of reception dedicated slave units 2-1 to 2-3, a slave unit. The simultaneous broadcast using the PS3 and a plurality of reception-only slave units 3-1 to 3-4 is used to realize a simultaneous reset of various devices and an emergency simultaneous stop.

Further, a plurality of reception-only slave units 1-1 to 1-
4, the plurality of reception-only slave units 2-1 to 2-3 and the plurality of reception-only slave units 3-1 to 3-4 are connected to active elements such as actuators of various devices, and the active elements are simultaneously reset. Controls emergency simultaneous stop, etc., and creates handset PS1, handset PS2, handset P
Since S3 has a transmission / reception function, it can be connected to a passive element such as a sensor to notify the user of data sensed by the passive element.

Note that the communication area in which the master devices CSa to CSc can communicate is not an accurate circle due to the arrangement conditions of devices and the like, but for example, when the PHS master device is used, the radius is 10
Communication is possible within the range of 0 m.

Further, within a range in which the radio wave of one base unit can reach, 2
It is also possible to arrange one or more slave units and perform simultaneous broadcast of two or more systems.

Also, if this communication system is connected to a general telephone network, it is possible to perform control from any subscriber telephone that subscribes to this telephone network.

Since the slave unit and the reception-only slave unit transmit data wirelessly to the master unit, they are layout-free and can be arranged and controlled arbitrarily.

FIG. 5 shows an ID for the reception-only slave unit 60.
3 shows a method of setting (call code).

The method of setting the ID (call code) for the reception-only slave unit 60 is as follows: 1) The ID stored in the ID storage unit 21 of the reception-only slave unit 60 using the keyboard (not shown) of the reception-only slave unit 60. There is a method of rewriting (call code) 2) rewriting the ID (call code) stored in the ID storage unit 21 of the reception-only slave unit 60 through communication with the slave unit 10.

FIG. 5 shows a method of rewriting the ID (call code) stored in the ID storage unit 21 of the reception-only slave unit 60 by communicating with the slave unit 10 shown in 2) above.

In the case of the method shown in FIG.
The ID (call code) stored in the ID storage unit 21 of the reception-only slave unit 60 is rewritten using the reception level detection function of 0, and the slave unit 10 is close to the reception-only slave unit 60 whose ID is to be rewritten. It is arranged at a distance of, for example, 10 cm, and a command for rewriting the ID (call code) stored in the ID storage unit 21 is wirelessly transmitted from the handset 10 to the reception-only handset 60 that is the target of ID rewriting.

Here, in the reception-only slave unit 60, this slave unit 1
The reception level from 0 is measured, and if the reception level exceeds a predetermined threshold value, the ID (call code) stored in the ID storage unit 21 is rewritten.

FIG. 6 shows the reception level measured by the reception-only slave unit 60 at this time. In this case, since the slave unit 10 is arranged in the close range of the reception-only slave unit 60, the reception level of the slave unit 10 should exceed the threshold value. The reception level should be below this threshold. This makes it possible to rewrite the ID (call code) for the reception-only slave unit 60 with certainty and without misidentification.

Whether or not the reception-only slave unit 60 has been rewritten with the correct ID (call code) is determined by this reception-only slave unit 60.
Can confirm whether or not the signal between the slave unit and the master unit can be intercepted.

By the way, in this communication system, as shown in FIG. 7, one reception-only slave unit 1-1 is the master unit CS.
When the other reception-only slave unit 1-2 is arranged in the vicinity of the boundary of the range in which the radio wave of the master unit CS reaches, the reception timing of both units is deviated by the distance difference. Occurs. However, for example, when the PHS parent device is adopted, the range of the radio wave of the parent device CS is about 100 m, and the time required for the radio wave to transmit the 100 m is less than 1 μs. It can be regarded as a simultaneous broadcast.

Further, as shown in FIG. 8, simultaneous broadcast is performed from the telephone set 50 via the telephone networks 40 including the exchanges (exchanges 1 to 5) 70-1 to 70-5 and the different parent devices CSa to CSc. Each exchange (exchanges 1 to 5) 7
The delay time of the simultaneous broadcast differs depending on the line accommodation status of 0-1 to 70-5. That is, the exchange (exchange 4) 70-4
CSa and exchange (exchange 5) 70 ″ 5 housed in
The parent device CSb accommodated in the
The timing of receiving data from -3 depends on the design of the telephone network 40 and its physical distance.

However, the same exchange (exchange 5) 70-
Focusing on the parent device CSb and the parent device CSc accommodated in No. 5, the maximum difference in reception timing between the reception-only child devices in this communication system is 5 ms.

That is, in this communication system employing PHS, as shown in FIG. 9, 5 ms TDMA / TD of 4 downlink time slots and 4 uplink time slots.
When operating based on the D frame and passing through the same exchange, the deviation of the reception timing is the maximum at this TDMA / T.
This is because it becomes 5 ms determined by the DD frame.

[0086]

As described above, according to the first aspect of the invention, the master unit connected to the communication network and the master unit are connected to each other by a wireless line, and the master unit is connected to the master unit by matching the unique call code. In a communication method in a wireless communication system including a slave unit that wirelessly communicates, a plurality of reception-only slave units dedicated to reception in which the same call code as that of the slave unit is set are arranged, and the master unit and the slave unit. When communicating with the device, the broadcast information is transmitted from the master device by the reception-only slave device, so that the broadcast communication is performed. The effect is that simultaneity can be secured.

According to the invention of claim 2, claim 1
In the present invention, since the reception-only slave unit is configured by deleting the transmission function from the slave unit, the reception-only slave unit can be configured easily and inexpensively, and according to the invention of claim 3. For example, in the invention of claim 1, since the reception-only slave unit is arranged in the same communication area as the master unit whose location is registered by the slave unit, the slave unit is the same as the master unit by which the slave unit is registered. Broadcast communication within the communication area is possible. Further, in the invention of claim 4, in the invention of claim 1, the reception-only slave unit is connected to an active element such as an actuator, and the slave unit is connected. Since it is connected to a passive element such as a sensor, it is possible to simultaneously control the active element by the simultaneous broadcast communication and transmit / receive the detection data of the passive element through the master unit and the communication network. Become.

According to the invention of claim 5, claim 1
According to the invention of claim 6, in the invention of claim 1, in the invention of claim 1, the reception-only slave is configured to set the calling code by key input of the reception-only slave. The slave unit is configured to set the call code by communicating with the slave unit in a state where the slave unit is brought close to the slave unit.
In the invention described above, the reception-only slave unit is configured to set the calling code on condition that the level of the reception signal from the slave unit exceeds a predetermined threshold value. The call code can be set easily and surely.

According to the invention of claim 8, a plurality of master units connected to the communication network and a plurality of the master units are respectively connected to the master units by radio lines, and each master unit is collated by a unique call code. In a communication method in a wireless communication system including a plurality of slaves that wirelessly communicate with each other, a plurality of reception-only slaves dedicated to reception in which the same call code is set for each slave is set as a communication area of each master. And is configured to perform simultaneous broadcast communication by receiving communication information transmitted from the master unit by the reception-only slave unit when communicating with each master unit and a slave unit corresponding to the master unit. Therefore, it is possible to ensure the simultaneity of simultaneous broadcast to a plurality of reception-only slave units without consuming a lot of communication resources.

According to the invention of claim 9, claim 8 is provided.
In the invention, since the reception-only slave set with the same call code as that of the slave is arranged in the same communication area as that of the master registered by the slave, Broadcast communication within the same communication area as the registered base unit becomes possible, and according to the invention of claim 10,
In the invention of claim 8, since the reception-only slave unit is connected to an active element such as an actuator and the slave unit is connected to a passive element such as a sensor, the active devices are simultaneously controlled by the simultaneous broadcast communication. At the same time, the detection data of the passive element can be transmitted and received via the master unit and the communication network.

According to the invention of claim 11, the master unit connected to the communication network is connected to the master unit by a wireless line,
In a communication device having a slave unit that wirelessly communicates with the master unit by collating a unique call code, the same call code as the slave unit is set, and during communication between the master unit and the slave unit, Since the reception-only slave device for receiving the communication information transmitted from the master device to the slave device is provided, it is possible to ensure the simultaneity of simultaneous broadcast without using a lot of communication resources. The device can be provided inexpensively and easily.

Further, according to the invention of claim 12, in the invention of claim 11, the reception-only slave unit is configured by deleting the transmission function from the slave unit. It can be constructed at a low cost, and according to the invention of claim 13, in the invention of claim 11,
Since the reception-only slave unit is arranged in the same communication area as that of the master unit whose location is registered by the slave unit, simultaneous broadcast communication within the same communication area as that of the master unit in which the slave unit is registered According to the invention of claim 14, in the invention of claim 11, the reception-only slave unit is
Since the slave unit is connected to an active element such as an actuator, and the slave unit is connected to a passive element such as a sensor, the active device is simultaneously controlled by the broadcast communication, and the detection data of the passive unit is transmitted to the master unit and the passive unit. It becomes possible to send and receive via the communication network.

According to a fifteenth aspect of the present invention, in the eleventh aspect of the present invention, the reception-only slave unit includes rewritable storage means for storing the calling code, and the storage means includes the rewritable storage means. The call code is rewritten by a key input of the reception-only slave unit. Further, according to the invention of claim 16, in the invention of claim 11, the reception-only slave unit is rewritable for storing the call code. A storage means is provided, wherein the storage means makes the drunk rewrite the call code by communicating with the slave in a state where the slave is brought close to the storage. Further, according to the invention of claim 17, In the invention of claim 16, the storage means is configured so that the calling code is rewritten on condition that the level of the received signal from the slave unit exceeds a predetermined threshold value. The setting of the call sign can be performed easily and reliably against.

According to the eighteenth aspect of the present invention, a plurality of master units connected to the communication network and a plurality of master units are respectively connected to the master units by wireless lines, and each master unit is verified by matching a unique calling code. In a communication device comprising a plurality of cordless handsets that wirelessly communicate with each other, the same call code as the cordless handset is set, and when the cordless handset corresponding to the cordless handset and the cordless handset communicate with the cordless handset, the cordless handset Since it is configured by including a plurality of reception-only slaves that receive communication information transmitted from the slave to the slaves, it is possible to achieve simultaneous broadcast to a plurality of reception-only slaves without using a lot of communication resources. It is possible to provide a communication device that can be secured inexpensively and easily.

According to the nineteenth aspect of the present invention, in the eighteenth aspect of the present invention, the reception-only slave set with the same call code as the slave is the same as the master whose location is registered by the slave. Since the slave unit is configured to be placed in the communication area, the simultaneous broadcast communication in the same communication area as that of the master unit whose location is registered by the slave unit becomes possible, and according to the invention of Claim 20, In the eighteenth invention, the reception-only slave unit is
Since the slave unit is connected to an active element such as an actuator, and the slave unit is connected to a passive element such as a sensor, the active device is simultaneously controlled by the broadcast communication, and the detection data of the passive unit is transmitted to the master unit and the passive unit. It becomes possible to send and receive via the communication network.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing an embodiment of a reception-only slave unit adopted in a communication method and device according to the present invention.

FIG. 2 is a diagram showing a communication control procedure when a call is made from a subscriber telephone connected to a telephone network to a PHS handset in the communication system employing the reception-only handset shown in FIG.

FIG. 3 is a diagram showing a total communication time and a usage state of required radio resources when a broadcast is performed in a communication system employing the reception-only slave shown in FIG.

FIG. 4 is a system configuration diagram showing an embodiment of a communication system of a manufacturing line of a factory configured by applying the communication method and device of the present invention.

5 is a diagram showing a method of setting an ID (call code) for the reception-only slave shown in FIG.

FIG. 6 is a diagram showing an example of a reception level measured by a reception-only slave in the method of setting an ID (call code) for the reception-only slave shown in FIG.

[FIG. 7] Reception timing of one reception-only slave unit when it is arranged close to the master unit, and when another reception-only slave unit is arranged near the boundary of the range where the radio wave of the master unit reaches FIG.

FIG. 8 is a diagram for explaining a shift in reception timing in the case of performing simultaneous broadcast from a telephone set via different parent devices via a telephone network.

FIG. 9 is a diagram for explaining a shift in reception timing when a simultaneous broadcast is performed via a master device CSb and a master device CSc accommodated in the same exchange.

FIG. 10 is a block diagram showing a schematic configuration of a PHS slave unit.

FIG. 11: PHS from a subscriber telephone connected to the telephone network
Showing a communication control procedure when a call is made to the child device.

FIG. 12 is a diagram showing a total communication time and a usage state of required radio resources when a broadcast is performed using a PHS slave.

[Explanation of symbols]

10 cordless handsets 11 antenna 12 Antenna transmission / reception switch 13 Radio receiver 14 Wireless transmitter 15 Time division multiplexing / Channel control unit 16 Reception ID judgment Transmission ID addition section 17 ID storage 18 Reception control signal output section 19 Transmission control signal input section 20 Received ID determination unit 21 ID storage unit

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04B ^7/ 24-7/26 102 H04Q ^7/ 00-7/38

Claims (18)

(57) [Claims] 1. A wireless system comprising: a master unit connected to a communication network; and a slave unit connected to the master unit by a wireless line and wirelessly communicating with the master unit by matching a unique PS-ID. A communication method in a communication system, which is configured by deleting the transmission function from the slave unit,
In addition, a plurality of reception-only slave units dedicated to reception in which the same unique PS-ID as the slave unit is set are arranged, and when the master unit and the slave unit communicate with each other, the communication transmitted from the master unit. A communication method comprising performing broadcast communication by receiving information by the reception-only slave unit. 2. The communication method according to claim 1, wherein the reception-only slave unit is arranged in the same communication area as that of the master unit whose position is registered by the slave unit. 3. The reception-only slave unit is connected to an active element such as an actuator, the slave unit is connected to a passive element such as a sensor, and the active devices are simultaneously controlled by the simultaneous broadcast communication. 2. The communication method according to claim 1, wherein the detection data of the passive element is transmitted and received via the master unit and the communication network. 4. The reception-only slave unit is provided with the unique PS-ID by key input of the reception-only slave unit.
The communication method according to claim 1, wherein 5. The communication method according to claim 1, wherein the reception-only slave unit sets the unique PS-ID by communicating with the slave unit in a state where the slave unit is brought close to it. . 6. The reception-only slave unit sets the unique PS-ID on condition that the level of a reception signal from the slave unit exceeds a predetermined threshold value. 5. The communication method described in 5. 7. A plurality of master units connected to a communication network, and a plurality of master units connected to the master units by wireless lines respectively, and wirelessly communicating with each master unit by collating unique PS-IDs. In a communication method in a wireless communication system including a slave unit, a plurality of reception-only units configured by deleting the transmission function from each slave unit and having the same unique PS-ID as that of each slave unit are set. The reception-only slave unit is placed in the communication area of each master unit, and when communicating between each master unit and the slave unit corresponding to the master unit, the communication information transmitted from the master unit is received by the reception-only slave unit. A communication method characterized by performing simultaneous broadcast communication by performing. 8. The unique PS-ID which is the same as the slave unit.
8. The communication method according to claim 7, wherein the reception-only slave set with is arranged in the same communication area as that of the master whose location is registered. 9. The reception-only slave unit is connected to an active element such as an actuator, the slave unit is connected to a passive element such as a sensor, and the active devices are simultaneously controlled by the simultaneous broadcast communication. 8. The communication method according to claim 7, wherein the detection data of the passive element is transmitted and received via the master unit and the communication network. 10. A communication comprising: a master unit connected to a communication network; and a slave unit connected to the master unit by a wireless line and wirelessly communicating with the master unit by matching a unique PS-ID. In the device, the transmission function is deleted from each of the slaves, and the same unique PS-ID as that of the slaves is set, and when the master and the slaves communicate with each other, the master A reception-only slave unit for receiving communication information transmitted from the slave unit to the slave unit, the communication device comprising: 11. The communication apparatus according to claim 10, wherein the reception-only slave unit is arranged in the same communication area as the master unit whose position is registered by the slave unit. 12. The reception-only slave unit is connected to an active element such as an actuator, the slave unit is connected to a passive element such as a sensor, and the active devices are simultaneously controlled by the simultaneous broadcast communication. 11. The detection data of the passive element is transmitted and received via the master unit and the communication network.
The communication device described. 13. The reception-only slave unit comprises a rewritable storage unit for storing the unique PS-ID, and the storage unit is provided with the unique PS-key by a key input of the reception-only slave unit. ID
11. The communication device according to claim 10, wherein is rewritten. 14. The reception-only slave unit includes a rewritable storage unit that stores the unique PS-ID, and the storage unit communicates with the slave unit in a state where the slave unit is brought close to the storage unit. 11. The communication device according to claim 10, wherein the unique PS-ID is rewritten by doing so. 15. The unique PS-ID is rewritten in the storage means on condition that the level of a received signal from the slave unit exceeds a predetermined threshold value. Communication device. 16. A plurality of master units connected to a communication network, and a plurality of master units connected to the plurality of master units by wireless lines respectively and wirelessly communicating with each master unit by collating unique PS-IDs. In a communication device including a slave unit, the transmission function is deleted from the slave unit,
And the same unique PS-ID as that of the slave unit is set, and during communication between the master unit and the slave unit corresponding to the slave unit,
A communication device comprising: a plurality of reception-only slave units that receive communication information transmitted from the master unit to the slave unit. 17. The reception-only slave set with the same unique PS-ID as that of the slave is arranged in the same communication area as the master with which the slave is registered. The communication device according to claim 16. 18. The reception-only slave unit is connected to an active element such as an actuator, the slave unit is connected to a passive element such as a sensor, and simultaneously controls the active elements by the broadcast communication. 17. The detection data of the passive element is transmitted and received via the master unit and the communication network.
The communication device described.