JPH01155726A - Constitution system for talking group - Google Patents

Abstract

PURPOSE:To select a communication opposite party more flexibly and minutely in response to the request of a caller by providing a means realizing in-group communication giving same talking channel to plural groups. CONSTITUTION:When a group 1 and a radio equipment 1-1-1-1 belonging to the group 1 apply calling to a radio equipment group of groups 1, 2 by using in-group communciation, a control signal representing the communication mode to be in-group communication, group ID of a caller ID as 1, group ID as 1 and group ID of a destination ID as 1 and a group ID as 2 is sent to a central controller 4 by using an incoming control channel. The central controller 4 retrieves an idle talking channel to decide a talking channel f1 to be assigned and gives information of it to all radio equipments in existence in a radio zone 6 that the relevant radio equipments 1-1-1-n, 1-1-2-n are to camp on the said talking channel f1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mobile communication system, and in particular, the present invention relates to a mobile communication system, in which a plurality of wireless devices communicate with each other at a wireless base station according to instructions for allocating and canceling communication channels from a central controller. The present invention relates to a mobile communication system that performs communication via a relay device.

[Conventional technology]

Multiple MAs communicate with each other via the communication channel of the central control unit.
MCA is a method for making a group call via a wireless base station relay device according to the #1 call or cancellation instruction.
There is a system.

In this system, there are two types of group call modes: intra-group call and intra-group call.

FIG. 1 is a diagram illustrating such a conventional call mode, in which 50 represents a group, and 51 to 56 each represent a group.

In the same figure, in the case of the intra-group call mode, one call channel is given to all the non-functions in the group indicated by 50, and in the case of the intra-group call mode, one call channel is given to all the non-functions in the group indicated by 50.
One communication channel is given to each radio device belonging to a specific group among the 56 radios.

[Problem that the invention seeks to solve]

In the conventional system as described above, when it is necessary to open a group call across groups as shown at 57 or 58 in the t52 diagram, it is necessary to make an intra-group call. In some cases, communication channels are also given to other groups within the same group that are not related to communication.

That is, since the same channel is also given to other wireless devices not related to the call, the #1 wireless device has to listen to unnecessary calls.

SUMMARY OF THE INVENTION In view of these conventional problems, it is an object of the present invention to provide a means for making calls between groups possible without initiating intra-group calls.

[Means for solving problems]

According to the invention, the above objects are achieved by the means specified in the claims.

That is, the present invention provides, in the mobile communication system, a means for requesting a radio device to communicate with a radio device belonging to another group, and a central control device that receives a request from the non-#i device. In this case, a call group arrangement method is provided in which a means is provided for providing a common call channel to the group to which the wireless device belongs and the group to which the other party's wireless device belongs.

〔Example〕

FIG. 3 is a diagram showing the vI configuration of a system according to an embodiment of the present invention.

In the same figure, 1-L-1Il-n (in the figure,
.

111tn is written as a number, which will be explained later. ) is the #1 wireless device existing in wireless zone 6 and has a multi-channel access function.

During a call, the communication channel is transferred to a predetermined communication channel according to the specification of the communication channel from the central control device, and multiple radios that have transferred to the communication channel are transferred to the specified communication channel via the communication channel center a device using the breath daughter method (two-frequency half-duplex communication). It has the ability to make group calls between machines.

As a group organizer for wireless devices for group calls,
There are groups and groups, and all non-functions are first classified into several groups based on worker units, which are further divided into several groups based on work units, and then groups are divided based on these groups. A call is made.

Group 1 of 1-L4-n represents group ID-No, m represents group ID-No, respectively.

That is, wireless fi 1-+-+-+ is a wireless device belonging to group 1, group 1.

2-1 is a control channel receiving device, which receives and demodulates the control channel uplink transmitted by #a, and relays it to the central control device.

2-2 is a control channel transmitting device which modulates a control signal from the central control device and transmits it to the wireless devices in the wireless zone 6 as a downlink control channel.

3 is a communication channel relay device which receives and amplifies the communication channel upstream from Iso, and performs frequency conversion.
A central control unit 64 transmits a call channel downlink to a non-#l island in the wireless zone 6, which manages the usage status of call channels and selects a channel to be allocated from among available call channels when a group call is requested. , has the function of specifying a communication channel for desired wireless devices participating in a group call.

Also, 5 represents the base station and 6 FIG. 4 shows a control sequence of an embodiment of the present invention.

Inter-group calls made possible by the call group configuration method of the present invention are performed as follows.

The following is a case in which radio 1-1-1-1 belonging to group 1 and group 1 makes a call to a group of non-#1 aircraft in group 1 and group 2 using group open call. .

1-1-+-+ f) No 11Amfpt-, ha! $5
1XI I: According to the M7 format, the call mode is inter-group call, the group ID of the caller ID is 1,
A control signal indicating that the group ID is 1, the group ID of the called party ID is 1, and the group ID is 2 is sent to the central controller 4 via the control channel receiving device 2-+ using the control channel upstream. be done.

The central control device 4 recognizes from the received control signal that there is a request for an inter-group call from group 1 of group 1 to group 2 of group 1, searches for an empty call channel, and assigns the call channel f1. After making the decision, the wireless device 2-2 transmits the wireless signal to all wireless devices in the wireless zone 6 according to the signal 7 format shown in FIG. -n, 1-
+-2-n is notified to shift to the corresponding communication channel f1.

The central control device 4 also activates the communication channel relay device 3 to relay the communication channel f1.

Among all the wireless devices that have received the control channel downlink, the wireless device 1-1-1-1. belonging to group 2 of group 1 has been ordered to shift to communication channel f1.
1-1-1-2.1-1-2-1.1-1-2-2 is
In accordance with the notification, the communication channel f1 is transferred. Thereafter, transmission and reception are repeated alternately between the wireless devices of this time using the press-daughter method, and a group call is performed via the call channel relay device 3.

The communication channel relay device 3 is activated by an activation signal from the central control device 4, and receives and amplifies the communication channel upstream from the wireless device that has shifted to the communication channel f, and performs frequency conversion. , to the wireless device that has migrated to .

This enables inter-group calls, and enables communication as shown at 57 or 58 in Figure 2, which has a higher degree of freedom than the conventional group call mode shown in Figure 1, ie, intra-group calls or intra-group calls. You can choose your opponent.

〔Effect of the invention〕

As explained above, the present invention is applicable to a mobile communication system in which a plurality of wireless devices communicate with each other via a wireless base station relay device according to the allocation and cancellation of communication channels by the central control device. In addition to the conventional group call mode, intra-group call and intra-group call, this system has a means to realize inter-group call which gives the same call channel to multiple groups. This has the advantage of allowing more flexible and detailed selection of communication partners according to requests.

[Brief explanation of the drawing]

Figure fjS1 is a diagram explaining the conventional group call mode, Figure 2' is a diagram showing the concept of the group call mode,
Fig. 3 is a diagram showing the system configuration of an embodiment of the present invention, Fig. 4 is a diagram showing a control sequence of an embodiment of the invention, and Fig. 5 is a diagram showing the inter-group call origination used in the embodiment of the invention. FIG. 6 is a diagram showing a seven-order format of a call request signal. FIG. 6 is a diagram showing a seven-order format of an inter-group call notification signal used in an embodiment of the present invention. 1-1-+-n... Radio equipment belonging to Group 1 of Group 1, 1-+-2-n... Radio equipment belonging to Group 2 of Group 1, l-2-1-n・
...No #ifi belonging to group 1 of group 2,
2-1... Control channel receiving device,
2-2... Control channel transmitting device,
3... Call channel relay device, 4
・・・・・・Central control unit, 5 ・・・・・・
Base station, 6...Wireless zone agent Patent attorney Takashi Honma! Figure 2

Claims (1)

[Claims] A wireless device having a multi-channel access function is installed in a service area to create a wireless zone, and wirelessly connects with the wireless device within this wireless zone using the multi-channel access function. A wireless base station relay device that has the function of receiving radio waves from a radio device, relaying and amplifying them, converting the frequency, and transmitting them to all wireless devices.Ascertaining the usage status of the above wireless base station relay device, and responding to requests from wireless devices. If there are multiple radio equipment groups in the same wireless zone, the central controller is equipped with Enables intra-group calls that provide a common communication channel for all radios within a group of radios, and intra-group calls that provide a common communication channel for radios that belong to a specific group within the group of radios. In a mobile communication system that is structured in such a way that a wireless device is provided with a means for requesting communication with a wireless device belonging to another group, when the central control unit receives a request from the wireless device, the wireless device A method for configuring a call group, characterized in that means is provided for providing a common call channel to a group to which a radio device belongs and a group to which a partner radio device belongs.