JP2000308136A - Mobile communication system and emergency communication method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable even respective terminal stations to execute emergency communication, which is limited to be executed from a control station. SOLUTION: When a control station 7 receives the request of emergency communication from a terminal station 1, for example, a group code table is updated in the order of the existence of terminal stations 1-3 close to the current location of that terminal station 1 out of groups codes A and B to which that terminal station 1 belongs. It is searched whether the respective group codes A and B are assigned to communication at present or not and when the group codes A and B are not assigned to communication, the group communication is executed by these group codes A and B. When the group codes A and B are assigned to communication, it is searched whether that communication is emergency communication or ordinary communication, in the case of ordinary communication, that communication is stopped and these group codes A and B are assigned to emergency communication.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system suitable for emergency communication using a terminal station and an emergency communication method thereof.

[0002]

2. Description of the Related Art One of the greatest features of a mobile communication system is that its terminal station is always close to the user. Therefore, managing the terminal station by the control station of the mobile communication system is considered to be equivalent to managing the user.

[0003] In this case, if the person who owns the terminal station has an urgent business, it is possible to support a function of giving priority to emergency communication even if other communication is disconnected.

[0004]

However, since the above-described emergency communication involves disconnection of normal communication, if all terminal stations have a function of giving priority to emergency communication, the function is executed. When communication requiring more urgency than communication from the terminal station is executed, there arises a problem that the urgent call is disconnected.

Therefore, the function of giving priority to the communication in an emergency is limited to the execution by the control station (judgment by a member of the control station).

[0006] In view of the above, realization of a communication service that is more satisfactory than the current situation is demanded in response to the original demand of emergency communication.

[0007] The present invention has been made in view of such a situation, and a mobile communication system and a mobile communication system capable of executing emergency communication limited to execution from a control station from each terminal station. The emergency communication method can be provided.

[0008]

According to a first aspect of the present invention, there is provided a mobile communication system including a plurality of terminal stations managed by a control station and capable of communicating in a wireless zone for each wireless base station. In a mobile communication system, a plurality of terminal stations are grouped with each other by a plurality of group codes, so that group communication within the same group code can be performed, and the control station is any one of the plurality of terminal stations. When a request for emergency communication is received from, a group code table for group codes based on the wireless zone to which the requesting terminal station belongs is created, and whether each created group code is currently assigned to communication Is searched for, and when it is not assigned to communication, group communication is executed by each group code. Further, the control station can assign each group code to emergency communication when each created group code is currently assigned to communication. Also, when receiving a request for emergency communication from any of the plurality of terminal stations, the control station does not disconnect voice communication to other terminal stations belonging to the same group code, and transmits the same group code by message transmission. It can be notified that there is a request for emergency communication from a terminal station within. Also,
After confirming that the notified terminal station has disconnected the communication, the control station can assign the group code to the emergency communication. In addition, the terminal station can execute emergency communication by linking with the safety system of the car, and the control station automatically responds to a message prompting the terminal station if it does not respond within a certain time. Alternatively, it is possible to manually contact the police or fire department through a private communication network. The emergency communication method for a mobile communication system according to claim 6, wherein the emergency communication is performed from a plurality of terminal stations managed by a control station and capable of communicating in a wireless zone of each wireless base station. An emergency communication method for a mobile communication system, comprising: a first step of grouping a plurality of terminal stations with each other by a plurality of group codes to enable group communication within the same group code; When a request for emergency communication is received from any of them, a second step of creating a group code table of group codes based on the wireless zone to which the requesting terminal station belongs; A third step of searching whether or not the communication is assigned to a group, and performing a group communication with each group code if the communication is not assigned to the communication. Characterized in that it comprises a fourth step of. Also, the fourth step may include a fifth step of assigning each group code to emergency communication when each created group code is currently assigned to communication. Also,
In the fourth or fifth step, when an emergency communication request is received from any of the plurality of terminal stations, the voice communication is not cut off to other terminal stations belonging to the same group code, and the message transmission is performed. A sixth step of notifying that a request for emergency communication has been made by a terminal station within the same group code can be included. In addition, the sixth step may include a step of, after confirming that the notified terminal station has disconnected the communication, assigning the group code to the emergency communication. In the first step, the terminal station is
A step of enabling emergency communication by linking with a vehicle safety system is included. The fourth step is to automatically or automatically respond to a message prompted to the terminal station if the response is not received within a predetermined time. A step of manually contacting the police or fire department through a private communication network may be included. In the mobile communication system and the emergency communication method according to the present invention, a plurality of terminal stations are grouped together by a plurality of group codes, thereby enabling group communication within the same group code,
When the control station receives an emergency communication request from any of a plurality of terminal stations, a group code table of group codes based on a wireless zone to which the requesting terminal station belongs is created, and then each created group is created. A search is performed to determine whether a code is currently assigned to a communication. If the code is not assigned to a communication, a group communication is performed by each group code.

[0009]

Embodiments of the present invention will be described below.

FIG. 1 is a block diagram showing an embodiment of a mobile communication system according to the present invention, FIG. 2 is a block diagram showing details of a control station in FIG. 1, and FIGS. 5 is a flowchart for explaining the operation of the communication system.

The mobile communication system shown in FIG. 1 includes a plurality of terminal stations 1 to 3, radio base stations 4 to 6, and a control station 7. The plurality of terminal stations 1 to 3 are managed by the control station 7 and can communicate in the wireless zones a to c of the wireless base stations 4 to 6.

The terminal station 1 is grouped with the terminal station 2 by the group code A, and is grouped with the terminal stations 2 and 3 by the group code B. As a result, group communication is performed.

The terminal station 2 is grouped with the terminal station 1 by a group code A, and is grouped with the terminal stations 1 and 3 by a group code B. As a result, group communication is performed. The terminal station 3 has a group code B
Grouped with the terminal stations 1 and 2 to execute group communication.

The radio base stations 4 to 6 are managed by the control station 7 and constitute radio zones a to c. Further, the radio base stations 4 to 6 notify the control station 7 of transmission requests from the terminal stations 1 to 3 in the radio zones a to c through a wired / wireless line. In addition, a request from the control station 7 is notified to the terminal stations 1 to 3 in the wireless zones a to c.

The control station 7 manages each of the terminal stations 1 to 3, manages each of the wireless base stations 4 to 6, manages each of the group codes A and B and the individual communication code, and manages a wired / wireless line.

FIG. 2 shows the details of the control station 7.

The control station 7 includes a radio control line termination panel 8 and a CP.
Panel 9, wired trunk 10, wireless communication line termination panel 11, T
A DSW (1, 2) 12 and an automatic notification board 13 are provided.

The radio control line termination panel 8 matches the electrical conditions with the radio base stations 4 to 6 connected to the control station 7 and transmits and receives connection signals to and from the radio base stations 4 to 6.

The CP board 9 has a central processing unit and a main program for managing the control station 7 mounted thereon. The wired trunk 10 is a panel having a trunk interface of each exchange such as a general public line network, and is controlled by the CP board 9.

The wireless communication line terminating panel 11 matches electrical conditions with a line for transmitting and receiving voice data to and from each of the terminal stations 1 to 3 on the wireless line, and makes a connection to a highway in the apparatus. , Data is transmitted for each prescribed time slot.

The TDSW (1, 2) 12 is a time-division switch for exchanging time slots on a highway in the apparatus under the control of the CP board 9. The automatic notification board 13 performs line holding and response prompting.

Next, the operation of the mobile communication system having such a configuration will be described with reference to FIGS.

First, as shown in FIG. 3, the control station 7 determines whether or not there is emergency communication (step 301).
When it is determined that there is an emergency communication, it is determined whether or not an automatic call is made from the terminal stations 1 to 3 (step 302).

When it is determined that the call is an automatic call from the terminal stations 1 to 3, the processing shifts to the flow of the processing A in FIG. Processing A
First, only the line of the control station 7 is connected to any one of the terminal stations 1 to 3 that made the call (step 401). Next, a voice message is transmitted to one of the terminal stations 1 to 3 that made the call (step 402). This is to prompt a response.

Next, the line is held by the automatic notification board 13 of FIG. 2 (step 403). After the line is held, the wireless zones a to c in which the terminal numbers of the calling terminal stations 1 to 3 are registered are specified. Further, pickup of the group codes A and B associated with any of the terminal numbers of the terminal stations 1 to 3 that made the call is performed.

Further, the terminal numbers of all terminal stations 1 to 3 registered in the picked up group codes A and B are searched. Then, in the order of whether each of the terminal stations 1 to 3 matches or is adjacent to the wireless base stations 4 to 6, and how many locations are registered in the next adjacent wireless zones a to c, An update is performed (step 404).

At this time, the counter of the group code table is cleared (step 405). After the counter of the group code table is cleared, the group code is passed to the emergency communication assignment processing subroutine (step 406). This processing is performed according to the flow of FIG. 6, and details thereof will be described later.

Next, processing results 1 according to the flow of FIG.
Return values 1 and 2 which are 2 are determined (step 407). If the return value is 1, the group code is placed at the end of the group code table (step 408).

If the return value is 2, it is determined whether or not I is MAX in the group code table (step 40).
9) If it is not MAX, the counter of the group code table is updated (step 410).

On the other hand, if it is determined in step (302) of FIG. 3 that the call is not an automatic call from the terminal stations 1 to 3, the flow shifts to the processing B of FIG.

In the process B, first, the terminal stations 1 to 1 that have called
3 and only the line of the control station 7 is connected (step 501). Next, after the line is connected, the wireless zones a to c in which the terminal numbers of any of the terminal stations 1 to 3 that made the call are registered are performed.

Further, pickup of the group codes A and B associated with one of the terminal numbers of the terminal stations 1 to 3 that made the call is performed. Also, all terminal stations 1 to 3 registered in the picked up group codes A and B
Is searched.

The group is determined in order of whether each of the terminal stations 1 to 3 matches or is adjacent to the radio base stations 4 to 6 and how many locations are registered in the next adjacent radio zones a to c. The code table is updated (step 502).

At this time, the counter of the group code table is cleared (step 503). After the counter of the group code table is cleared, the group code is passed to the emergency communication assignment processing subroutine (step 504). This processing is performed according to the flow of FIG. 6, and details thereof will be described later.

Next, processing results 1 according to the flow of FIG.
Return values 1 and 2 of 2 are determined (step 505). If the return value is 1, the group code is placed at the end of the group code table (step 506).

If the return value is 2, it is determined whether I is MAX in the group code table (step 50).
7) If it is not MAX, the counter of the group code table is updated (step 508).

Next, in the emergency communication assignment processing subroutine of FIG. 6, it is determined whether or not the passed argument has already been assigned to communication (step 60).
1). If it is determined that the communication is allocated, it is determined whether the communication is an emergency communication (step 6).
02).

If it is determined that the communication is not emergency communication, the existing call is disconnected, an argument is assigned to the emergency communication, and the processing result 2 is returned (steps 609 to 611).

If it is determined that the communication is an emergency communication, an emergency communication message is transmitted (step 603). Next, the disconnection of the terminal stations 1 to 3 which are mobile stations is monitored, and a monitoring timer for disconnecting the terminal stations 1 to 3 is started (steps 604 and 605).

Next, it is determined whether or not there is a disconnection notification (step 606).
09 to 611). If there is no disconnection notification, the processing result 1 is returned after the disconnection monitoring timer reaches a predetermined time (steps 607 and 608).

If it is determined in step 601 that the passed argument has not been allocated to communication, the existing call is disconnected, the argument is allocated to emergency communication, and the processing result 2 is returned (step 601). 612-614).

As described above, in the present embodiment, the control station 7
Receives a request for emergency communication from the terminal station 1, for example, from among the group codes A and B to which the terminal station 1 belongs,
The group code table is updated in the order in which the terminal stations 1 to 3 that are closer to the current location of the terminal station 1 are present. That is, in FIG. 1, a group code table is created in the order of group A and group B.

Next, it is searched whether each of the group codes A and B is currently assigned to communication. When group codes A and B are not assigned to communication,
Group communication is executed by the group codes A and B.

When the group codes A and B are assigned to communication, whether the communication is an emergency communication or a normal communication is searched. If the communication is a normal communication, the communication is disconnected and the emergency communication is performed. Group codes A and B are assigned.

If the existing communication is an emergency communication, the terminal station 2 belonging to the group code A is transmitted from the terminal station 1 in the group A by message transmission without disconnecting the voice communication. Notify that emergency communication has been requested, and urge participation in emergency communication.

When it is recognized that the communication of the group A has been disconnected by the operation of the correspondent, the group code A is assigned to the emergency communication.

As a result, in the prior art, the existing call was forcibly disconnected as an emergency communication and communication with all users was limited to the control station 7 only. In the present embodiment, it is possible to execute a request from each of the terminal stations 1 to 3, and it is possible to provide a communication service that is more satisfactory than the current situation in response to an original request for emergency communication.

When emergency communication is executed in a form linked to a safety system (such as an airbag) possessed by the automobile, a voice message is sent to each of the terminal stations 1 to 3 to the control station 7 side. If a response does not return within a certain period of time, it is possible to automatically or manually contact a police station, a fire department, or the like via a self-service communication network.

[0049]

As described above, according to the mobile communication system and the emergency communication method according to the present invention, a plurality of terminal stations are grouped with each other by a plurality of group codes, so that group communication within the same group code can be performed. Executable and when the control station receives an emergency communication request from any of a plurality of terminal stations, a group code table of a group code based on the wireless zone to which the requesting terminal station belongs is created. After that, it is searched whether each created group code is currently assigned to communication, and if it is not assigned to communication, group communication is executed according to each group code. The emergency communication that has been performed can be executed from each terminal station.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an embodiment of a mobile communication system according to the present invention.

FIG. 2 is a block diagram showing details of a control station of FIG. 1;

FIG. 3 is a flowchart illustrating an operation of the mobile communication system in FIG. 1;

FIG. 4 is a flowchart illustrating an operation of the mobile communication system of FIG. 1;

FIG. 5 is a flowchart illustrating an operation of the mobile communication system in FIG. 1;

FIG. 6 is a flowchart illustrating an operation of the mobile communication system of FIG. 1;

[Explanation of symbols]

 1 to 3 terminal station 4 to 6 wireless base station 7 control station 8 wireless control line termination panel 9 CP panel 10 wired trunk 11 wireless communication line termination panel 12 TDSW (1, 2) 13 automatic notification panel a to c wireless zone A, B group code

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (10)

[Claims] 1. A mobile communication system comprising a plurality of terminal stations managed by a control station and capable of communicating in a radio zone for each radio base station, wherein the plurality of terminal stations are a plurality of terminal stations. By being grouped with each other by the group code, group communication within the same group code can be executed.When the control station receives a request for emergency communication from any of the plurality of terminal stations, the control station After creating a group code table of the group codes based on the wireless zone to which the calling terminal station belongs, search whether each created group code is currently assigned to communication, and A mobile communication system for performing group communication using each of the group codes when the group code is not present. 2. The mobile communication system according to claim 1, wherein the control station assigns each of the group codes to emergency communication when each of the created group codes is currently assigned to communication. . 3. The control station, upon receiving an emergency communication request from any one of the plurality of terminal stations, does not disconnect voice communication to other terminal stations belonging to the same group code, and transmits a message. 3. The mobile communication system according to claim 1, wherein the mobile station notifies the terminal station in the same group code of an emergency communication request. 4. The mobile communication system according to claim 3, wherein the control station allocates the group code to emergency communication after confirming that the notified terminal station has disconnected communication. 5. The terminal station is capable of executing emergency communication by linking with a vehicle safety system, and the control station responds to a message prompted to the terminal station for a predetermined time. The mobile communication system according to claim 1, wherein, when the mobile communication system is not located within the mobile communication system, the mobile communication system automatically or manually contacts a police station or a fire department via a private communication network. 6. An emergency communication method for a mobile communication system which is managed by a control station and executes emergency communication from a plurality of terminal stations which can communicate in a wireless zone of each wireless base station. A first step of grouping the plurality of terminal stations with each other by a plurality of group codes and enabling group communication within the same group code; and requesting emergency communication from any of the plurality of terminal stations. Receiving the request, the second step of creating a group code table of the group codes based on the wireless zone to which the requesting terminal station belongs; and the created group codes are currently assigned to communication. A third step of searching for whether or not there is a communication, and if not assigned to a communication, a group communication is executed by each of the group codes. Emergency communications method for a mobile communication system; and a fourth step. 7. The method according to claim 5, further comprising the step of: assigning each of the group codes to emergency communication when each of the created group codes is currently assigned to communication.
7. The emergency communication method for a mobile communication system according to claim 6, further comprising the step of: 8. In the fourth or fifth step, when an emergency communication request is received from any of the plurality of terminal stations, disconnection of voice communication to other terminal stations belonging to the same group code is performed. The mobile communication system according to claim 6 or 7, further comprising a sixth step of notifying that an emergency communication request has been made from a terminal station in the same group code by message transmission without performing the communication. Emergency communication method. 9. The method according to claim 8, wherein the sixth step includes a step of assigning the group code to emergency communication after confirming that the notified terminal station has disconnected the communication. An emergency communication method for the mobile communication system according to claim 1. 10. The first step includes:
A step of enabling emergency communication by linking with a safety system of a vehicle, wherein the fourth step includes a step of not responding to a message prompted to the terminal station within a predetermined time; 7. The emergency communication method for a mobile communication system according to claim 6, further comprising a step of automatically or manually contacting a police station, a fire station, or the like through a private communication network.