JPH04373319A - Radio communication system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-location wireless communication system in which a single master radio unit controls a plurality of child radio units using a single frequency.

0002

[Background Art] Conventionally, in a wireless communication network using a single system at multiple locations, when performing independent communication for groups with different functions, separate master radios are provided for each group, and Using frequencies, a wireless communication network was constructed in multiple locations.

[0003] FIG. 5 shows a communication network using the conventional multi-location single system wireless communication system configured in this manner.

First, in FIG. 5, the initial basic functional classification is divided into three functional groups: A group 20, B group 30, and C group 40.
a, one parent radio 11 and seven slave radios (21
~27), A group 20 consisting of one parent radio 12 using frequency fb, B group 30 consisting of two child radios (31, 32), and one parent radio using frequency fc. 13 and three slave radios (41 to 43), the C group 40 is composed of three multi-location systems. In addition, each parent radio is connected to the control station 10 in the same area.
Communication control shall be carried out at Originally, the wireless communication network in FIG.
27, 31 to 32, 41 to 43), it is possible to configure a multi-location wireless communication network using one frequency fa, but if the slave radio has three functions of A group, B group, and C group, Because it is classified, two parent radios (12
, 13) and two new frequencies (fb
, fc) and three parent radios (11 to 13).
Each functional group (20, 30,
40) constitutes a multi-location communication network.

[0005] Here, two slave radios (51 to 51) are further installed.
52) in the control station 10 to expand the scale of communication control, one more parent radio 14 and a new assigned frequency fd are required.

[0006] Also, AZ group 6 within A group 20
0 independently and redundantly, it is the same as adding a new function group, and one parent radio 15, three child radios (65 to 67) and a new frequency fa
z is required.

[0007] Therefore, in the conventional multi-location single-system wireless communication system configured for each function, the increase in new functional groups requires new master radio equipment, and new wireless communication systems different from other functional groups are required. Frequencies are required, and as the scale of communications control expands, there is a shortage of allocated frequencies, which poses a problem in that it places limits on the expansion of communications.

Furthermore, in the case of changing the group to which a child radio belongs, one child radio 43 of group C 40 is assigned to group B 30, the child radio 43 of group C 40 is assigned to group B 30. It is necessary to change the frequency from frequency fc of group B to frequency fb of group B 30, check the radio line associated with it, and complete procedures for leaving group C 40 and joining group B 30. It takes a lot of time and effort.

[0009] In this way, in a conventional multi-location single-system wireless communication network configured for each functional group, even if communication control is possible from one control station area, frequencies and parent radios are allocated according to the number of functional groups. The increase in the number of functional groups required the construction of new multi-location integrated communication networks, which limited the ability to expand the scale of communication networks. Also, setting duplicate functional groups within a functional group requires a new base radio and a different frequency, just as the number of functional groups increases.
In fact, it was restricted. Furthermore, since the frequency differs for each function, changing between function groups requires time and effort. In other words, in conventional multi-location single communication networks, flexible and large-scale wireless communication network It was difficult to respond to and construct.

0010

[Problems to be Solved by the Invention] As mentioned above, in the conventional wireless communication network that configures a multi-site system for each functional group, it is necessary to allocate frequencies equal to the number of functional groups. In situations where it is difficult to secure the necessary functions, it is difficult to expand the system to a large-scale communication system by increasing and overlapping functional groups.

[0011]Furthermore, when a wireless device belonging to a certain functional group changes its affiliation to another functional group, the procedure for joining the communication system of another parent wireless device is required due to the change in functional group. Necessary, but with withdrawal/joining procedures and separate functional groups.
There is a problem in that migration procedures, such as frequency changes associated with joining a group and confirmation of the communication network configuration after the change, take time and effort.

The present invention eliminates the above problems, enables the construction of a large-scale wireless communication system, and reduces the time and effort required for re-registration due to changes in terminal affiliation between functional groups. The purpose is to provide a wireless communication method.

[0013]

[Means for Solving the Problems] In a multi-location single wireless communication system in which a single master radio unit controls a plurality of slave radio units divided into functional groups using one frequency, - a setting means for setting a password corresponding to the destination function group; a means provided in the parent wireless device for automatically adding a password corresponding to the destination function group at the time of transmission; A means provided in the radio to notify the operator of the received content as normal reception only when the password corresponding to the preset own function group matches the password of the received data at the time of reception. It is characterized by having the following.

[0014]

[Operation] According to the present invention, by determining passwords for each function group in advance, when the main radio transmits a message, the password is always added as a header of the message. , all slave radios receive the message regardless of the function group, but depending on the function group password added to the message, messages not addressed to the set function group will be notified to the operator. You can avoid it.

[0015] Therefore, even if the frequency is the same, the introduction of a password will cause the same result as if the operator other than the partner function group specified by the parent radio is not receiving the signal, and the multiple locations and one system for each function group will not receive the signal. Since the communication network can be simulated, unnecessary confusion between functional groups does not occur. Further, since the main radio device can specify a functional group, selective control communication to the functional group is possible even if the same frequency is used.

[0016]Furthermore, the function group can be improved only by increasing the number of passwords.
Since the number of groups can be increased and duplicated, it is possible to construct a large-scale communication system that controls many functional groups in multiple locations.

Furthermore, even if there is a change between functional groups, the operator only needs to change the password by specifying the name of the functional group to be changed, so there is no need to change the frequency or confirm whether communication is possible, and the change can be made immediately. Can be moved to operation.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of the present invention. Note that the reference numerals in FIG. 1 are the same as those used in FIG. 5 in order to facilitate comparison with conventional wireless communication networks.

First, the original multi-location wireless communication network consisted of three groups: A group 20, B group 30, and C group 40.
12 slave radios (21 to 2
7, 31 to 32, 41 to 43) are configured by one frequency fo under the control of one parent radio device 11. Group A 20 consists of a shared master radio 11 and seven slave radios (21 to 27), and the password for each function is "XX".
”. Group B 30 has shared parent radios 11 and 2.
It consists of two slave radios (31, 32), and the password for each function is "YY". The C group 40 consists of a shared master radio device 11 and three child radio devices (41 to 43), and the password for each function is "ZZ".

Now, the present invention is characterized in that each functional group has a password, and the password is registered in advance in each radio device before constructing a radio communication network. This password registration will be explained with reference to FIG. 2.

FIG. 2 is a diagram showing an example of a password setting section of a wireless device. This password setting section has function selection keys (221 to 216) corresponding to function group names (211 to 216).
~226), password setting key 200, number/alphabet conversion key 201, and confirmation key 2 used when entering a password.
02, number/alphabet input keys, shift key 230, and liquid crystal display 240. First, to set a password, select the password setting key 200, then select the function selection key (222-226) corresponding to the function group name (212-216), and if necessary, press the numeric/alphabetic conversion key 200. After conversion, use the numeric/alphabetic input keys and shift key 230 to
Set the password while referring to 0. Passwords for other function groups can also be set using other function selection keys (222 to 2).
After selecting 26), the same settings can be made. In addition, the function selection key 221 of the main radio corresponding to the control station
It is not possible to set a password. In addition, the specification of the control station 221 of the parent radio, which is performed only by the parent radio during operation, is set by selecting the function selection key 221, and the specification of the destination function group name (212 to 216) is made using the function selection key. This can be done by selecting (222-226). In addition, the function selection key (222-2
26) is set by the selection. At this time, the light emitting diode (221
a to 226a), and when the key is selected, the color turns red to indicate to the operator that the selection key is selected.

[0023] In this way, the password for each functional group set in advance for all radios is added to the message transmitted by the master radio in the following manner. Figure 3 below shows how to add a password when the main radio transmits a message.
Explain with reference to.

FIG. 3 is a diagram showing an example of the data format transmitted by the parent wireless device. That is, in FIG. 3, the data transmitted from the wireless device is the message content 30 which is the information part sent from the terminal connected to the own wireless device.
For 3, when sending, enter the password of the selected destination 3
02 is added as the header of the information section 303. moreover,
Finally, a synchronization bit 301 and an error detection code 304 are added, and the signal is transmitted from the radio. At the time of reception, the password 302 which is the header of the received message is read by the slave wireless device.

[0025] Next, the communication procedure of the multi-location single system wireless communication system when using the password according to the present invention will be described. FIG. 4 is a diagram showing the operational flow of the radio device according to the present invention. First, passwords for all functions are set in advance for all wireless devices (410). Next, it is determined whether or not it is the main radio device (420
), in the case of a slave radio, select its own function from the function selection key on the operation panel of the password setting section of the radio (42
5). The next operations of the master radio device and the child radio device differ depending on whether or not to transmit (430, 460). When transmitting using the main radio, after selecting the function group name of the destination using the operation panel that is the password setting section of the radio (451), a message is input from the terminal connected to the radio to the radio. (452), the transmission destination password selected in advance is automatically added to the message in the wireless device and transmitted (453). If the main radio is not transmitting, it enters the receiving state (441), and when it receives (442), it is output to the terminal connected to the radio (
442). At this time, no password is added to the messages from the child radio, and the parent radio outputs all the messages it receives. Next, when transmitting with a slave radio (460), there is no need to select a destination on the radio's operation panel, and a message is input to the slave radio from a terminal connected to the slave radio. (471), and the message is sent as is without adding the password (472). In addition, if the child radio is not transmitting (460), the receiving status (481)
), and when received (482), the message is output to the terminal only if the password of the message sent by the parent radio device matches the function password set for its own radio device (483), and if it does not match (483). ) is not output to the terminal and enters the receiving state again (481). In this way, by introducing a password for each functional group, the functional group within the multi-site wireless communication network can be identified, and the master wireless device can selectively communicate with the functional group.

[0026] Through the above operating procedure, communication within a multi-location wireless communication network consisting of three functional groups, A group, B group, and C group, and increase/example of functional groups.
Duplicate settings and changing the group to which a child radio belongs between functional groups will be explained with reference to FIG. 1 again.

First, as shown in the operation flow of FIG.
When the operator specifies the functional group to which the parent wireless device wishes to transmit, the password of the specified functional group is automatically added to the transmitted message and the message is transmitted. On the other hand, all child radios (21-27, 31-32, 41-43) use the same frequency fo, so they can receive data sent by the parent radio, but they are different from each other according to their own set functions. If it does not match the password, it will be rejected and the slave radio operator will not recognize it as a legitimate reception.

For example, when specifying the A group 20 and transmitting, the main radio 11 enters the password "in the header of the transmitted message.
Since the message is sent with "XX" added, all child radios (21 to 27) in the A group 20 can receive it and output it to the terminal because it matches the password "XX" of their own functional group 20. , child radios (31 to 32) of B group 30 and C group 40, which are other functional groups.
and 41 to 43) have passwords "YY" and "ZZ" respectively, and the password "X" in the sent message is
Since the received data does not match "X", the received data is rejected and is not output to the terminal connected to the radio. In addition, the slave radio (21
27, 31-32, 41-43) to the main radio 11, the message is sent without a password added, and only the main radio 11 can receive it. The received message can be output to the terminal 11a. Note that communication between functional groups is always performed via the parent radio device 11 of the control station 10.

Next, when adding a new functional group like D group 50 in FIG. 1, if the password "VV" for D group has already been set, the already configured A groups 20 and B Similar to group 30 and group C 40, it is possible to immediately join the multi-location wireless communication network. If a password has not been set, a new password "VV" may be set for the parent radio 11 and all child radios (51, 52) of the D group 50.

[0030] In addition, when setting the AZ group 60 redundantly in the A group 20, the A group 2 which has already been set in the child radios (25 to 27) of the AZ group 60
The password "WW" for the AZ group 60 is selected to overlap the password "XX" for the password "XX" for the password "XX" for the password "XX" for the AZ group 60. In other words, a child wireless device belonging to the AZ group only needs to select the AZ group from the function selection key of its own password setting section. With this password duplication setting, the child wireless devices (25 to 27) in the AZ group 60 can receive both the message addressed to the A group 20 and the message addressed to the AZ group 60.

Furthermore, when changing the function of one slave radio 43 in the C group 40 to the slave radio 33 in the B group 30, the password "Z" of the radio 43 in the C group 40 is changed.
All you need to do is change the password "Z" to "YY". This operation is simply to select the function selection key corresponding to the B group 30 on the slave radio 43, and the password for each function to which it belongs is automatically changed from "ZZ" to "YY".

[0032] In this way, by introducing a password addition and verification function to the radio equipment of a multi-site wireless communication network, multiple multi-site wireless networks can be integrated, and frequencies can be used effectively. At the same time, by using a password only in the direction from the master radio to the functional group that has slave radios, it is possible to selectively control the communication of the functional groups of the master radio, making it easy to configure complex and large-scale multi-site wireless communication systems. can. Furthermore, it is possible to easily and quickly increase, duplicate, or change the number of functional groups by simply setting the functional groups of the child radios, allowing for flexible responses to the situation of the wireless communication network.

[0033] In this embodiment, a password is added to the message only in the downward direction from the master radio to the slave radio, and no password is added to the message in the upstream direction from the slave radio to the master radio. However, a password may also be added in the upstream direction. For example, if the password of the control station 10 is "SS", the slave radio adds the password "SS" to the message it sends, and the parent radio transmits only the message to which its own password "SS" is added as a legitimate message. It may be presented to the operator as a received message.

Further, in this embodiment, communication is performed by inputting and outputting messages from a terminal connected to each radio, but it is also possible to perform simple input and output of messages from the radio itself.

[0035]

Effects of the Invention As explained above, the present invention allows multiple functional groups to be connected to a single multi-location wireless communication network by introducing passwords for each functional group into wireless devices. Since it can be incorporated into one multi-site integrated communication network, it becomes possible to construct a unified large-scale multi-location integrated wireless communication system that does not require an increase in the allocated frequency of the wireless communication network.

[0036] Originally, multiple frequencies were required to create multiple wireless communication networks in multiple locations for each functional group, but with the introduction of passwords, multiple functional groups can be controlled using only a single frequency. This allows effective use of limited frequencies.

Furthermore, increasing or duplicating functional groups and migrating between functional groups can be done simply by changing the password according to the functional group selection of the radio, without taking much time and effort. It has the advantage of being able to configure, maintain, and operate a wireless communication network flexibly and quickly according to the needs of customers.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram showing an embodiment of a wireless communication system according to the present invention.

FIG. 2 is a panel configuration diagram showing a password setting section of the wireless device in the embodiment shown in FIG. 1;

FIG. 3 is a format diagram showing an example of a data format transmitted from a parent wireless device in the embodiment shown in FIG. 1;

FIG. 4 is a flowchart explaining the operation of the embodiment shown in FIG. 1;

FIG. 5 is a diagram illustrating a conventional example of a communication network using a plurality of multiple point-in-place wireless communication systems.

[Explanation of symbols]

10 Control station 11 Main radio device 11a Terminals 21-24, 25-27, 31, 32, 41-43, 5
1, 52, 65, 6 7 Sub radio 200 Password setting key 201 Numerical/alphabetic conversion key 202 Confirm keys 221a to 226a Light emitting diode 230 Numerical/alphabetic input key and shift key 240 Liquid crystal display

Claims (1)

[Claims] Claim 1: A multi-site wireless communication system in which a single master radio unit controls a plurality of slave radio units divided into functional groups using one frequency, which corresponds to the functional groups. a setting means for setting a password to be transmitted; a means provided in the master radio device for automatically adding a password corresponding to a destination function group at the time of transmission; and a means for notifying the operator of the received content as normal reception only when the password corresponding to the preset own function group matches the password of the received data at the time of reception. A multi-location wireless communication system that is characterized by the following: