JPH06224846A - Group switching type communication equipment and group switching type communication system using the same - Google Patents

Abstract

PURPOSE:To attain a certain communication simultaneously with the other communication in the same MCA system by providing a group switching control means which switches a group with which communication is operated by an MCA radio equipment under outside control. CONSTITUTION:This device is equipped with an MCA radio equipment 2 which operates MCA radio communication, and a data communicating means 3 which communicates digital information through the MCA radio equipment 2. Then, the device is equipped with a group switching control means 4 which switches the group with which the communication is operated by the MCA radio equipment 2. In this case, even when the communication is turned with the same channel as the other communication in a state that a certain group is selected by the MCA radio equipment 2, the group with which the communication is operated by the MCA radio equipment 2 can be changed by controlling the group switching control means 4 by the outside control. Thus, the group can be changed, and a certain communication can be attained simultaneously with the other communication in the same MCA system by using the other channel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a group switching type communication device used for business radio and the like, and a group switching type communication system using this device.

[0002]

2. Description of the Related Art MCA (Multi-Channel Access) radio is
For example, it is used for collection and delivery instruction systems in the transportation industry and the like. As is well known, in MCA radio, one of the users
The unit is composed of one base station (command station) and a plurality of mobile stations that can communicate with each other, and the unit of the user is called a group. In the MCA radio, the base station and the mobile station do not directly communicate with each other, but the control station intervenes between them, which is well known and is not directly related to the present invention. Since it is not related, the control station is omitted and it is noted that the base station and the mobile station communicate directly.

FIG. 6 is a block diagram showing the structure of a conventional mobile station. If only voice communication is performed, only the MCA radio device 61 is required. If data communication is also performed, an MCA wireless device 61, a data communication means 62 for communicating digital information via the MCA wireless device 61, a personal computer 63 for controlling data communication, data processing, etc. are required. .

[0004]

In a conventional MCA system composed of mobile stations as shown in FIG. 6, at the time of communication, a base station belonging to the same MCA system and all mobile stations tune to the same channel all at once. Therefore, voice communication and data communication cannot be performed simultaneously in the same MCA system. FIG. 7 is a diagram for explaining such a situation.
When the base station and all mobile stations tune to the same channel when the press button of the microphone is pressed to perform voice communication with mobile station A, mobile station B needs to perform data communication during that period. Even if the nature occurs, the mobile station B cannot perform the data communication until the voice communication is completed.

Such a situation is also the same as when the press button of the microphone is pressed to perform voice communication in the mobile station A. In addition, even when data communication is performed between the base station and mobile station A, the base station and all mobile stations tune to the same channel, so there is no need to perform voice communication at mobile station B during that period. Even if it occurs, the mobile station B cannot perform voice communication until after the end of the data communication.

In the conventional MCA system, as described above, since voice communication and data communication cannot be simultaneously performed in the same MCA system, the responsiveness is lost in, for example, a pickup and delivery system, and such a system is lost. Is inconvenient for users of.

The technical problem of the present invention is to pay attention to such a problem, and in the MCA system, separate communication is possible even during a period in which another communication device is communicating in the same MCA system. It is to realize a communication device. Then, this communication device is applied to, for example, a collection / delivery system to realize a communication system capable of simultaneously performing voice communication and data communication in the same MCA system.

[0008]

FIG. 1 is a block diagram for explaining the basic principle of a group switching type communication device according to claim 1. In FIG. The group switching communication device according to claim 1 also has an MCA radio 2 for performing MCA radio communication, and a data communication means 3 for communicating digital information via the MCA radio 2. In such a configuration, the group switching communication device according to claim 1 is configured such that the MCA radio 2 is controlled under external control.
It has a group switching control means 4 for switching the group with which communication is performed.

A group switching communication system according to claim 2 is
A base station 1 and a mobile station 6 are provided, and a group is selected for the mobile station 6 according to the group switching communication device of claim 1 and voice communication and data communication, and the group switching control means 4 is provided. The control means 5 controls and switches a group.

A group switching communication system according to claim 3 is
In the group switching communication system according to claim 2, the mobile station 6 has a control means for selecting a group for voice communication and waiting for communication.

The group switching communication system according to claim 4 is
In the group switching communication system according to claim 2, the mobile station 6 has a control means for selecting a group for data communication and waiting for communication.

The group switching communication system according to claim 5 is
In the group switching communication system having a plurality of base stations 1, the mobile station 6 has a control means for further selecting a group according to the base station 1 of the communication destination.

[0013]

According to the group switching type communication device of claim 1,
Since the MCA radio 2 has the group switching control means 4 for switching the group to communicate with under the external control, the MCA
Even if the radio 2 is tuning to the same channel as other communication in the state where the radio 2 is selecting a certain group, the MCA radio 2 communicates by controlling the group switching control means 4 by external control. It is possible to change the herd. And, since it is possible to change the group in this way, it is possible to perform another communication at the same time as another communication within the same MCA system by using another channel.

In the group switching communication system according to claim 2, the mobile station 6 selects a group according to the group switching communication device according to claim 1 and voice communication and data communication, and the group switching control means 4 Since it has a control means 5 for controlling the groups and switching the groups, by assigning different groups to the voice communication and the data communication, the different channels are used to simultaneously perform the communication in the same MCA system. It is possible to do.

Further, by allocating a plurality of groups to voice communication and data communication, it is possible to simultaneously perform a plurality of voice communication and a plurality of data communication in the same MCA system by using different channels.

In the group switching type communication system according to claim 3, the mobile station 6 has a control means for selecting a group for voice communication and waiting for communication. It is suitable for a communication system that does not require a switching control procedure and has a high frequency of voice communication.

In the group switching type communication system according to claim 4, the mobile station 6 has a control means for selecting a group for data communication and waiting for communication. It is suitable for a communication system that does not require a switching control procedure and has a high frequency of data communication.

In the group switching communication system according to claim 5, since the mobile station 6 has a control means for further selecting a group according to the base station 1 of the communication destination, the mobile station 6 is
It is possible to communicate with a plurality of base stations 1. Since the plurality of base stations 1 belong to different groups, it is possible to simultaneously perform communication between different base stations 1 and different mobile stations 6.

[0019]

EXAMPLES Next, examples of how the group switching communication system according to the present invention is actually embodied will be described. FIG. 2 is a block diagram showing an embodiment of the present invention, and constitutes an MCA system capable of simultaneously performing voice communication and data communication within the same MCA system. Base station 21
Is installed with an MCA wireless device 23 for performing voice communication and an MCA wireless device 24 for performing data communication. And
Different groups are assigned to voice communication and data communication.

A DCU (Data Control Unit) 25 for connecting to an external device and performing data communication is attached to the MCA radio 24 and connected to a personal computer 26 or the like. The personal computer 26 is not essential, and other control means such as a general-purpose computer, a printer, a display device, etc. are selected according to the purpose of use of the system.

An MCA radio 27 is installed in the mobile station 22,
The MCA radio 27 is shared between the case of performing voice communication and the case of performing data communication. The MCA radio 27
A DCU 28 for connecting to an external device and performing data communication is attached and connected to a personal computer 29 or the like. The personal computer 29 is not essential, and devices such as other control means, printers, and display devices are selected according to the purpose of use of the system. DCU28 has a personal computer
An interface for switching the group of MCA radios 27 under the control of 29 or the like is incorporated.

When a press button on the microphone of the MCA radio 27 is pressed in a mobile station 22, at least the mobile station
MC installed in 22 and MC installed in base station 21
The A radio 23 is tuned to the same channel and voice communication is performed. During such voice communication, at another mobile station 22, a personal computer for transmitting and receiving data
When 29 or the like is operated, at least the MCA radio 27 installed in the mobile station 22 and the MCA radio 24 installed in the base station 21
Are tuned to the same channel, and data communication is performed between the personal computer 26 and the like installed in the base station 21 and the personal computer 29 and the like installed in the mobile station 22.

In this embodiment, since different groups are assigned to voice communication and data communication, a group of MCA radios 27 installed in the mobile station 22 is selected and switched according to voice communication and data communication. As described above, it is possible to simultaneously perform voice communication and data communication within the same MCA system. 3 and 4 are time charts showing an example of such group switching control in the mobile station 22. In FIGS. 3 and 4, the first group is assigned to voice communication and the second group is assigned to data communication.

FIG. 3 is a time chart showing an example in which the mobile station 22 selects a group for voice communication and waits for communication. Since the group for voice communication is selected and on standby, the group switching control is not necessary when performing voice communication. On the other hand, when performing data communication, the DCU 28 is controlled before starting the data communication as shown in (a) and (d) of FIG.
The group of CA radios 27 is switched to the group for data communication. Then, data communication is carried out as shown in (a) and (e) of the same figure, and after the data communication is completed, a group for voice communication is again selected as shown in (c) and (f) of the figure to wait for communication. .

If such group switching control is performed, one group of channels is used in voice communication, and two groups of channels are used in data communication. Therefore, the same MCA is used.
It is possible to perform voice communication and data communication at the same time in the system. Since group switching is not required during voice communication, it is preferable to apply the method to a communication system in which voice communication is frequently performed.

FIG. 4 is a time chart showing an example in which the mobile station 22 selects a group for data communication and waits for communication. Since a group for data communication is selected and is on standby, when performing data communication, group switching control is not required as shown in (a) and (b) of FIG. On the other hand, when performing voice communication from the base station 21 to all the mobile stations 22, the group switching instruction data is transmitted from the base station 21 as shown in FIG. When receiving the instruction data, switches to the group for voice communication as shown in FIG.

In such voice broadcast communication, both the base station 21 and the mobile station 22 transmit data during the voice communication so that the mobile station 22 does not miss the broadcast communication. And the MCA radio 27 installed in the mobile station 22
It is necessary to prevent switching to a group for data communication. For individual voice communication, only a specific mobile station 22 may be selectively switched to the voice communication group. If the group switching instruction data includes the data designating the mobile station 22, each mobile station 22 identifies the data, so that only the specific mobile station 22 is selectively used for voice communication. It is possible to switch to a group. Then, during the voice communication period, the other mobile station 22 can perform data communication.

When the voice broadcast communication is completed, the group switching instruction data is transmitted from the base station 21 as shown in FIG. 9 (E), and each mobile station 22 receives the instruction data and then receives the instruction data. ), Switch to the group for data communication. In this case, if there is a mobile station 22 that cannot receive the group switching instruction data due to the radio wave environment or the like, the mobile station 22 loses the opportunity to switch to the group for data communication. In order to eliminate such inconvenience, in addition to the group switching control as described above, the mobile station 22 measures the time for switching to the group for voice communication and, if a sufficient time elapses, voluntarily uses for data communication. It is preferable to use the control of switching to the group.

If voice communication is performed from the mobile station 22, for example, in conjunction with the press button of the microphone,
When a voice communication group is selected as shown in FIG. 6 and voice communication is completed, the data communication group is again selected and communication is waited as shown in FIG.

If such group switching control is performed, one group of channels is used in voice communication, and two groups of channels are used in data communication. Therefore, the same MCA is used.
It is possible to perform voice communication and data communication at the same time in the system. Since group switching is not required during data communication, it is preferable to apply the method to a communication system in which data communication is frequently performed.

In the configuration of the communication system as described above, data communication and voice communication can be performed simultaneously in the same MCA system, but a plurality of data communications and a plurality of voice communications cannot be performed at the same time. When the frequency of communication and voice communication is extremely high, a communication waiting time becomes necessary. In such a case, it is preferable to further install an MCA receiver, DCU, control means, etc. in the base station 21 and allocate different groups.

With such a configuration, it is possible to simultaneously perform a plurality of data communications and a plurality of voice communications within the same MCA system. Therefore, for example, mobile stations are divided into several groups and If the groups for data communication and the groups for voice communication are allocated differently for each group, the communication frequency of each group is reduced and the communication waiting time is also reduced.

Further, the base station 21 is further provided with an MCA receiver,
It is also possible to install a DCU, control means, etc., and further allocate groups according to the content of data to be communicated and the content of voice communication. Such a configuration is effective, for example, when a group that is not normally used is reserved for a group that is used for normal communication and that the group waits for highly urgent communication such as an abnormality report. .

FIG. 5 shows an application example of the present invention when there are a plurality of base stations. When the mobile station 53 performs data communication, the destination base station is selected according to the type of data to be transmitted, the current position, and the like. Then, by performing group switching according to the base station selected in this way, the mobile station 53 can perform data communication with a plurality of base stations.

[0035]

As described above, the group switching type communication device has a structure capable of switching the group to be communicated by the external control as described above. Same MCA using different channels
In the system, it is possible to perform another communication at the same time as another communication.

The group switching type communication system according to claim 2 is
As described above, since the group is selected and switched according to the voice communication and the data communication, unlike the conventional case,
It has become possible to use the different channels to simultaneously perform those communications within the same MCA system. Also, by assigning multiple groups to voice communication and data communication,
It has become possible to simultaneously perform multiple voice communications and multiple data communications within the same MCA system.

The group switching type communication system according to claim 3 is
As described above, the group for voice communication is selected to wait for communication, so that the group switching control procedure for performing voice communication becomes unnecessary.

The group switching type communication system according to claim 4 is
As described above, since the group for data communication is selected and the communication is waited for, the group switching control procedure at the time of performing data communication becomes unnecessary.

The group switching type communication system according to claim 5 is
Since the group is further selected according to the base station of the communication destination, the mobile station can communicate with a plurality of base stations. Moreover, it has become possible to simultaneously perform communication between different base stations and different mobile stations.

Therefore, according to the present invention, in the MCA system, it is possible to realize a communication device that can separately perform communication even during a period in which another communication device is performing communication in the same MCA system. It was Then, by applying this communication device to, for example, a collection / delivery system, the same MC
It became possible to perform voice communication and data communication simultaneously within the A system.

[Brief description of drawings]

FIG. 1 is a block diagram showing the basic principle of the present invention.

FIG. 2 is a block diagram showing an embodiment of the present invention.

FIG. 3 is a time chart showing a first embodiment of group switching control according to the present invention.

FIG. 4 is a time chart showing a second embodiment of group switching control according to the present invention.

FIG. 5 is a diagram illustrating an application example of the present invention to a communication system having a plurality of base stations.

FIG. 6 is a block diagram of a conventional mobile station.

FIG. 7 is a diagram illustrating a problem of a conventional MCA wireless system.

[Explanation of symbols]

 1 Base Station 2 MCA Radio 3 Data Communication Means 4 Group Switching Control Means 5 Control Means 6 Mobile Stations 21 Base Stations 22 Mobile Stations 23 MCA Radios 24 MCA Radios 25 DCU 26 Personal Computers 27 MCA Radios 28 DCU 29 Personal Computers

Claims (5)

[Claims] 1. An MCA radio device for performing MCA radio communication (2)
A data communication means (3) for communicating digital information via the MCA radio (2), and a group switching control means for switching a group communicated by the MCA radio (2) under external control. (4) A group switching communication device comprising: 2. A base station (1) and a mobile station (6), wherein the mobile station (6) responds to the group switching type communication device having the configuration of claim 1 and voice communication and data communication. To select a group and control the group switching control means (4) to switch the group
(5) A group switching communication system comprising: 3. The group switching communication system according to claim 2, wherein the mobile station (6) has control means for selecting a group for voice communication and waiting for communication. system. 4. The group switching communication system according to claim 2, wherein the mobile station (6) has control means for selecting a group for data communication and waiting for communication. system. 5. The group switching communication system according to claim 2, comprising a plurality of base stations (1), wherein the mobile station (6) further selects a group according to a base station (1) of a communication destination. A group switching type communication system comprising means.