JP3055517B2 - Emergency contact system for wireless devices - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency contact system in a wireless connection system.

[0002]

2. Description of the Related Art In a system in which a base station and a mobile terminal or a slave station are connected by radio, when excessive traffic such as a disaster occurs, all of the radio communication channels are blocked and there are no free channels. Not only general subscribers but also important subscribers may be disturbed.

As a countermeasure, for example, Japanese Patent Laid-Open No. 9-8
No. 4108 discloses communication of important subscribers (outgoing / incoming)
There has been proposed a priority connection system for mobile terminals, which can ensure the priority over general subscribers.

The priority connection system for a mobile terminal includes a call control means in a base station and a reserved line number determining means for calculating the reserved line numbers for general calls / priority calls and / or outgoing calls / incoming calls. And channel assignment means for notifying the call control means of the channel assignment and controlling the reserved line and performing traffic measurement, so that when congestion occurs in the mobile terminal, communication of important subscribers ( (Outgoing / incoming) can be secured in preference to general subscribers.

[0005]

However, the system proposed in Japanese Patent Application Laid-Open No. 9-84108 is a system in which a finite number of radio communication channels are allocated to general subscribers and important subscribers, so that the traffic situation may be reduced. Although we can dynamically change the number of channels to be allocated accordingly,
For example, when there are many important subscribers and all the radio communication channels are used up (when there are no radio channels available), even the important subscribers cannot communicate with the contact. have.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide an emergency connection system in a wireless connection system even when all wireless communication channels are in use. It is an object of the present invention to provide a system that enables notification of caller information to a receiver.

[0007]

In order to achieve the above object, an emergency communication system for a wireless device according to the present invention comprises: a system in which a slave station and a base station exchange information by radio; A call channel vacancy information recognizing means for recognizing vacancy information of a call channel, and an important subscriber in which a calling telephone is registered in advance when a call is made when all the call channels are busy (All Busy).
Emergency call recognition means for judging whether the called party is a place designated as an emergency contact , and tone generation for transmitting a dial tone, a ringing tone, etc. to a telephone connected to the slave station. Means, voice generating means for notifying the subscriber by voice, and control channel control means for recognizing the control channel received from the base station, placing the information of the slave station on the control channel, and transmitting the information to the base station, Prepared,
A base station for recognizing free information of a communication channel, means for recognizing free information of a communication channel, means for forming a loop with an exchange, and recognizing an emergency call of a subscriber and transmitting the information to a target call destination Emergency calling subscriber information means for transferring, voice generating means for transmitting voice from a base station to a called party, and recognizing a control channel received from the slave station,
Control channel control means for transmitting the information of the base station on a control channel and transmitting the information to the slave station, even when all the radio communication channels are in use, the information of the urgent subscriber is transmitted to the destination. Notification is possible.

[0008]

Next, an embodiment of the present invention will be described. The emergency communication system of the wireless device of the present invention,
In the preferred embodiment, the information is transmitted to the center device ahead of the base station using the control channel without using the communication channel when the communication channels of the radio channels between the base station and the slave stations are all busy. , To communicate information to emergency contacts.

In the embodiment of the present invention, the slave station includes a speech channel vacancy information recognizing means (21 in FIG. 1) for recognizing vacancy information of a radio speech channel between the base station and the slave station, and a speech channel having no vacancy When a call is made at the time of (All busy), whether the calling telephone is a pre-registered important subscriber and the destination of the call from the important subscriber are designated as emergency contacts. Emergency call recognition means (22 in FIG. 1) for judging whether it is a place, and tone (TONE) generation means (23 in FIG. 1) for transmitting a dial tone or a ringing tone to the telephone connected to the slave station. )
And voice generating means for notifying the subscriber by voice (FIG. 1)
24) and control channel control means (25 in FIG. 1) for recognizing the control channel received from the base station, putting the information of the slave station on the control channel, and transmitting the information to the base station.
Is provided.

The base station is a communication channel vacancy information recognizing means for recognizing vacancy information of a radio communication channel (31 in FIG. 1).
Loop generating means (32 in FIG. 1) for forming a loop (LOOP) with the exchange (4 in FIG. 1), recognizing the emergency call of the subscriber, and transferring the information to the intended call destination Emergency calling subscriber information means (33 in FIG. 1)
Voice generation means (34 in FIG. 1) for transmitting voice from the base station to the called party; control channel control for recognizing the control channel received from the slave station, putting the information of the base station on the control channel, and transmitting the information to the slave station (35 in FIG. 1).

When the telephone dials the telephone number of the center, which is the emergency contact, in a state where the wireless communication channel between the slave and the base station is free, the emergency call recognition means detects the emergency call. The registration information is compared with the dialed number sent, and if the registered emergency contact is found, the control channel control means controls the radio control channel (TS
0) with the dial number and transmit it to the base station.

When the base station recognizes that the data received by the control channel control means is a dial number, it loops the line corresponding to the calling subscriber to the exchange, and the exchange switches to the telephone set of the subscriber. The base station that has received this dial tone issues an emergency call when there is no available communication channel, so that the base station reproduces the dial number of the center to which the base station is connected.

The exchange receiving the dial number sends a call signal to the center device of the center to which the exchange is connected. Further, the exchange sends a ringing tone to the telephone at the same time as calling the center device, and the base station that has received the ringing tone places the fact that the ringing tone has been received by the control channel control means on the control channel (TS0) and sends it to the slave station. Forward. The slave station receiving this confirms that the information of the control channel is a ringing tone, creates a ringing tone for the telephone by the tone generating means, and transmits the ringing tone to the telephone. At this time, the voice generating means of the slave station generates a voice indicating that the telephone line is congested but calling the center, and notifies the telephone.

When the called center device answers, a loop occurs and the exchange closes the communication path. However, the base station that has detected the loop cannot perform radio communication with the slave station.
The base station transmits to the center device that the important subscriber is an emergency call.

Therefore, according to the embodiment of the present invention,
Even when all wireless communication channels are in use, emergency callers can be notified of information to destinations, saving lives in congestion-prone situations such as disasters. Effect.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to describe the above-mentioned embodiment of the present invention in more detail, an embodiment of the present invention will be described below.

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the emergency communication system according to the present invention. Referring to FIG. 1, in the present embodiment, the telephones 11 and 12 are connected to the slave station 2, and the slave station 2 and the base station 3 exchange information by wireless. The base station 3 is connected to the exchange 4 and exchanges information with the center device 5 through the exchange 4.

As shown in the channel configuration diagram of FIG. 2, the wireless communication is composed of a control channel and a communication channel, and the control channel is usually used for communication of idle communication channel information and fault information. The communication channel is a channel through which voice passes, and during communication, two channels are used for uplink from the slave station 2 to the base station 3 and reverse downlink.

The difference between the control channel and the communication channel is that the control channel is the control information and the communication channel transmits the radio signal at all times during the call, while the communication channel is the control information. It must be busy so that it is not used by other subscribers.

In the present embodiment, information is transmitted to the center device 5 ahead of the base station 3 using the control channel without using the communication channel.

Referring to FIG. 1 again, the slave station 2 includes a speech channel vacancy information recognizing section 21 for recognizing vacancy information of the speech channel, and an all bus busy channel (All Bus).
y) When an outgoing call is made during the state, the emergency call recognition unit determines whether the calling telephone is an important subscriber and whether the call destination is a place designated as an emergency contact. 22, a tone (TONE) generating unit 23 for transmitting a dial tone (DIAL TONE) or a ringing tone to a telephone connected to the slave station 2, a voice generating unit 24 for notifying the subscriber by voice, A control channel control unit 25 that recognizes a control channel received from the base station 3 or puts information of the slave station 2 on the control channel and transmits the control channel to the base station 3.
And

The base station 3 includes a traffic channel vacancy information recognizing unit 31 for recognizing vacancy information of a traffic channel, a loop (LOOP) generating unit 32 for forming a loop (LOOP) with the exchange 4, and an emergency call of a subscriber. Emergency calling subscriber information section 33 for recognizing the call and transferring the information to center device 5
And a voice generation unit 34 for transmitting voice to be sent from the base station 3 to the center device 5, and a control channel received from the slave station 2 is recognized, and information of the base station 3 is put on the control channel and transmitted to the slave station 2. A control channel control unit 35.

The actual operation of this embodiment will be described with reference to the sequence charts of FIGS.

First, a case will be described with reference to FIG. 1 and FIG. 3 in which a wireless communication channel has a free space, a call can be transmitted from the telephone set 11 to the center apparatus 5, and a normal communication can be performed (sequence S1).

In the radio system according to the present embodiment, the idle communication channel information is transferred from the base station 3 to the slave station 2 at the time of starting. The idle communication channel information is transferred from the base station 3 to the slave station 2 every time the information changes. In this normal calling sequence, it is assumed that only the notification channel TS1 is empty before the telephone 11 is called. , The slave station 2 receiving the information sends a T
Register S1.

When the receiver of the telephone 11 is picked up, an off-hook (OFF HOOK) signal is transmitted to the slave station 2, and the slave station 2, which has received the off-hook (OFF HOOK) signal, transmits to the base station 3 using the idle communication channel TS1. Make a call request.

The base station 3 transfers information indicating that the TS1 is busy to all the slave stations so that the communication channel used for calling is not used. In this case, there was no space since the original space was only TS1 (All Busy)
Information is sent.

The base station 3 loops (LOOP) a line corresponding to the calling subscriber to the exchange 4.

When the exchange 4 detects the loop, it issues a dial tone (DIAL TON) to the telephone set 11 of the subscriber.
E).

The user of the telephone 11 checks the dial tone and dials the number of the center to which the telephone 11 is connected. The slave station 2 that has received the dial number notifies the base station 3 of the dial number. The slave station 2 receives a DP (dial pulse) signal and a P
The signal can be detected for both signal systems of B (push button) signal, and the notification to the exchange 4 is reproduced or passed by the base station 3 without changing from the state without wireless communication.

The exchange 4 that has received the dial number sends a call signal to the center device 5 of the center to be connected. In addition, the exchange 4 calls the center device 5 and sends a ringing tone to the telephone 11 at the same time.

The center device 5 responds (OFF HOOK)
Then, a loop occurs, the exchange 4 closes the communication path, and the communication state is established.

Next, with reference to FIGS. 1 and 4, a description will be given of a sequence in a case where it is desired to urgently contact the center device 5 from the telephone 12 in a state where the radio communication channel is full (All Busy) (sequence S2). ).

When the receiver of the telephone 12 is picked up, an off-hook (OFF HOOK) signal is transmitted to the slave station 2. However, the speech channel availability information recognizing section 21 of the slave station 2 is busy (All Busy) and has no idle channel. Unlike the normal call, the processing is shifted to the emergency transmission recognition unit 22.

The emergency call recognizing unit 22 checks whether the off-hook subscriber is an important subscriber. If the subscriber is an important subscriber, a dial tone is created by the tone generator 24,
Send to telephone 12. In this case, the call is transmitted to the subscriber of the telephone 12 as in a normal call. Alternatively, the voice generation unit 24 may create the fact that there is no wireless communication channel available (All Busy), and notify the telephone 12.

No wireless communication channel available (All Bu
sy) or when the telephone 12 receiving the dial tone dials the telephone number of the center which is the emergency contact, the emergency call recognizing unit 22 of the slave station 2 compares the emergency contact registration information with the transmitted dial number, If it is a registered emergency contact, the control channel control unit 25 puts a dial number on the radio control channel TS0 and transmits it to the base station 3.

When the base station 3 recognizes that the data received by the control channel control unit 35 is a dial number,
The line corresponding to the calling subscriber is looped through the exchange 4.

Since the exchange 4 detects the loop, it issues a dial tone to the subscriber's telephone 12 as in the case of a normal call.

When the base station 3 receives the dial tone,
If the call is a normal call, a dial tone is transmitted to the slave station 2 through the communication channel, but no communication channel is available (All
Because of the emergency call of “Busy”, the received dial tone is ignored, and the base station 3 reproduces the number of the center to be connected.

The exchange 4 receiving the dial number sends a call signal to the center device 5 of the center to which the exchange is connected. The exchange 4 calls the center device 5 and sends a ringing tone to the telephone 12 at the same time.

Here, the base station 3 that has received the ringing tone
The control channel control unit 35 places the fact that the ringing tone has been received on the control channel TS0 and transfers it to the slave station 2.

The slave station 2 which has received the request receives the control channel TSO
Is confirmed to be a ringing tone, a ringing tone is generated for the telephone set 12 by the tone generator 24, and
Send to 2. When the dial tone and the ringing tone are created from the slave station 2, the operation up to this point is the same as that of the normal call for the subscriber of the telephone set 12.

The voice generation unit 24 of the slave station 2 may generate a voice such as “the telephone line is currently congested but calling”, and notify the telephone 12.

On the other hand, the called center device 5 responds (O
(FF HOOK), a loop occurs, and the exchange 4 closes the communication path. However, since the base station 3 that has detected the loop cannot communicate with the slave station 2, the base station 3 joins the center device 5 with an important connection. To the effect that this is an emergency call. As the contact method, the address of the subscriber's house or the like from the calling telephone may be registered in the emergency calling subscriber information unit 33 and transferred from the base station 3 by a signal, or the voice synthesizing unit 34.
May be converted to voice. Further, a method of reducing information in the base station 3 by providing a database outside may be used.

The center device 5 that has confirmed that the call is an emergency call cannot talk directly to the telephone 12, but must take measures such as heading to the site as a response, and take prompt measures in the event that it is urgent. Can be.

The base station 3 sends a call destination response notice to the slave station 2 on the control channel TS0, and the slave station 2 receives the notice from the base station 3 and notifies the telephone set 12, for example, "at present when the telephone line is congested. And I can't talk to the center, but I've contacted the center, so please hang up and wait. ''
Is generated and transmitted.

The registration of important subscribers may be performed for all subscribers under the slave station 2.

Also, the registration of the emergency contact number may be valid for all numbers, and a flexible service can be provided by balancing important subscribers and emergency contact numbers.

[0049]

As described above, according to the present invention,
Even when all of the wireless communication channels are in use, it is possible to notify a caller who needs urgency of information to a called party. Therefore, the present invention
It is very effective in rescuing human lives in situations where congestion is likely to occur, such as during a disaster.

Further, according to the present invention, unlike the conventional system, it is not necessary to secure the radio communication channel for important subscribers, so that the radio communication channel can be used to the maximum from the normal state. The wireless communication channel can be effectively used.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration of a wireless channel between a base station and child stations.

FIG. 3 is a sequence diagram for explaining the operation of one embodiment of the present invention.

FIG. 4 is a sequence diagram for explaining the operation of one embodiment of the present invention.

[Explanation of symbols]

 11, 12 Telephone 2 Slave station 21 Call channel free information recognition unit 22 Emergency call recognition unit 23 Tone generation unit 24 Voice generation unit 25 Control channel control unit 25 Antenna 3 Base station 31 Call channel free information recognition unit 32 Loop generation unit 33 Emergency Calling subscriber information section 34 Voice generation section 35 Control channel control section 4 Switching equipment 5 Center device

Continuation of the front page (72) Inventor Hiromi Atsuta 5-7-1 Shiba, Minato-ku, Tokyo Within NEC Corporation (58) Field surveyed (Int. Cl. ⁷ , DB name) H04B 7/26 H04Q 7 / 04-7/38 H04M 3/42

Claims (5)

(57) [Claims] In a system in which a slave station and a base station exchange information by radio, a call is made when a communication channel of a wireless channel between the slave station and the base station is free. important subscriber der phone subscriber registered in advance is, and, when a call destination is an emergency contact registered in advance, and the a slave station the base station transmits the information using a control channel Means for transmitting emergency information to a contact point by transmitting information to a center device ahead of the base station. 2. A system for exchanging information between a slave station and a base station using radio, wherein the slave station recognizes free information of a radio communication channel, and a communication channel empty information recognizing means; If there is no outgoing call, the calling phone is a pre-registered important subscriber.
Emergency call recognition means for determining whether the called party is a place designated as an emergency contact , and a tone for transmitting a dial tone, a ringing tone, etc. to a telephone connected to the slave station. Generating means, voice generating means for informing the subscriber by voice, control channel control means for recognizing a control channel received from the base station, placing information on the slave station on a control channel, and transmitting the information to the base station The base station comprises: a communication channel vacancy information recognizing means for recognizing vacancy information of a radio communication channel; a means for forming a loop with an exchange; and recognizing an emergency call of a subscriber, and recognizing the information. Emergency calling subscriber information means for transferring to a target call destination; voice generation means for transmitting voice from the base station to the call destination; and a control channel received from the slave station. Control channel control means for recognizing the information, transmitting the information of the base station on the control channel, and transmitting the information to the slave station. Even when all the communication channels are in use, the information of the urgent subscriber can be obtained. An emergency contact system for wireless devices, which can notify a destination. (3) When a telephone dials a telephone number of a center device, which is an emergency contact, in a state where the wireless communication channels of the slave station and the base station are full, an emergency call of the slave station is made. When the recognition unit determines that the emergency contact is an emergency contact registered in advance, the slave station control channel control unit sends the dial number to a control channel of a wireless channel and transmits the base station, (B) When the base station recognizes that the data received by the control channel control means is a dial number,
Looping the line corresponding to the calling subscriber to the switch; (c) the switch issues a dial tone to the subscriber's telephone; (d) the base station receiving the dial tone comprises: Without transmitting the dial tone to the slave station, the base station reproduces the dial number of the center apparatus to which the base station is connected, and (e) the exchange having received the dial number from the base station is a connection partner. A ringing signal is transmitted to the center device, and a ringing tone is transmitted to the telephone. (F) The base station, which has received the ringing tone from the exchange, has received the ringing tone by the control channel control means. Is transferred to the slave station on a control channel. (G) The slave station confirms that the information of the control channel is a ringing tone, and outputs a ringing tone to the telephone before. Created by the tone generation means and transmitted to the telephone, at which time the voice generation means of the slave station generates a voice that the telephone line is congested but calls the center and notifies the telephone. (H) when the called center device answers, a loop is formed, the exchange closes the communication path, and the base station that has detected the loop transmits an emergency call to the center device. The emergency communication system for wireless devices according to claim 2, wherein 4. An off-line when the handset of the telephone is picked up.
Signal is transmitted to the slave station and there is no available communication channel.
Sometimes the communication channel availability information recognizing means performs the emergency call.
The processing is shifted to a recognizing unit, and the emergency call recognizing unit rejects the off-hook subscriber.
Is an important subscriber registered in advance.
Heavy that confirmed, subscriber who has the off-hook is said has been registered in advance
If a subscriber is required, dial tone is generated
Means and send it to the telephone, or
Created by the voice generation means to indicate that there is no
Notify the telephone, and if there is no free wireless communication channel or dial
The telephone that received the call
When the telephone number is dialed, the emergency call of the slave station
In the recognition means, the emergency contact registration information and the
Emergency numbers registered with the dial numbers
If it is a contact, the control channel control means
Put the dial number on the line control channel and send it to the base station.
3. The communication of the wireless device according to claim 2, wherein
Quick contact system . 5. The registration of the important subscriber is performed under the control of the slave station.
2. The method according to claim 1, wherein the step is performed for all subscribers.
4. The emergency communication system for a wireless device according to any one of
M