JPH10322770A - Message allowance emergency radio communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system which receives a communication request from the other station to a mobile station during emergency communication and can flexibly transmit information. SOLUTION: This system is constituted of the mobile station 25, radio base stations 20 and 30 and a control station. A communication channel for the mobile station is preferentially allocated to emergency communication. When a message storage control part is provided for the control station 1 and the communication request is received from a terminal except for an emergency communication opposite party, the message storage control part 50 stores the prescribed part of the communication request as a message and transmits the message to the objective mobile station during emergency communication when emergency communication terminates.

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 in which connection services within a zone and between zones are improved.

[0002]

2. Description of the Related Art FIG. 4 is a diagram showing a basic configuration of a conventional system for performing emergency communication. In the figure, 10 is a radio base station apparatus, 21 and 31 are emergency communication mobile stations, 12 is a radio channel in the radio base station 10, 22 is a general communication mobile station, 1
3 is a control channel and 14 is a communication channel.

Next, the operation of the apparatus having the above-described configuration will be described. The emergency communication mobile stations 21 and 31 are in emergency communication using the communication channel 14. The mobile station 22 requests communication from the emergency communication mobile station 31 using the control channel 13. The radio base station apparatus 10 returns a connection rejection to the mobile station 22 because the emergency communication mobile station 31 is communicating. When the communication between the emergency communication mobile stations 21 and 31 is completed, the mobile station 22 requests communication from the emergency communication mobile station 31 again using the control channel 13. The wireless base station apparatus 10 notifies the emergency communication mobile station 31 of the incoming call request using the control channel 13. The emergency communication mobile station 31 notifies the radio base station apparatus 10 of the reception of the incoming call. The radio base station apparatus 10 notifies the mobile station 22 and the emergency communication mobile station 31 of the communication channel 14, and the emergency communication mobile station 31 and the mobile station 22 start communication using the communication channel 14.

[0004]

Since the conventional emergency communication radio is configured as described above, in a mobile communication system in which a radio base station apparatus is connected using a multi-channel access (MCA) function, When the emergency communication radio is in emergency communication, there is a problem that if another emergency communication radio is desired to be communicated further, the other party cannot be notified of the emergency message even if the emergency message is sent.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and a system for registering a message message in an emergency communication radio device during an emergency communication and enabling the message message to be communicated to the other party after the end of the emergency communication. The purpose is to obtain.

[0006]

A message-permitted emergency radio communication system according to the present invention comprises a mobile station, a radio base station, and a control station, and preferentially assigns a communication channel to the mobile station to emergency communication. In a communication system, a message storage control unit is provided in a control station, and when a communication request is received from a terminal other than the emergency communication partner for a target mobile station in emergency communication, the message storage control unit transmits a predetermined portion of the communication request. The message is stored as a message, and the message is transmitted to the target mobile station when the emergency communication is completed.

Furthermore, a priority is set for a communication request from a terminal other than the emergency communication partner, and when the priority of the communication request is high, a communication channel with a low priority is forcibly disconnected when transmitting a message message. Send it.

Further, when a communication request from a terminal other than the emergency communication partner is an emergency communication, the communication request is stored as a message message and transmitted after the end of the emergency communication.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a description of a channel and an example of a communication sequence at the time of emergency communication according to the first embodiment. In FIG. 1, reference numeral 1 denotes a first system formed by a zone in which a wireless base station device 20 relays communication of a mobile station;
This is a control station device that controls connection between the wireless base station device 30 and a second system formed in a zone where communication of mobile stations is relayed. 22 is a wireless channel of the first system formed around the wireless base station device 20, 23 is a control channel in the wireless channel of the first system, 24 is a communication channel, and 21 and 25 are wireless base stations, respectively. Mobile stations communicating within a zone of the system formed around the device 20. Reference numeral 32 denotes a radio channel of the second system formed around the radio base station device 30, reference numeral 33 denotes a control channel in the radio channel of the second system,
Reference numeral 4 denotes a communication channel, and reference numeral 31 denotes a mobile station that communicates in a system zone formed around the wireless base station device 30. Reference numeral 50 denotes a message storage control unit that stores a message message provided in the control station device 1 and is read when necessary.

Hereinafter, the operation of the radio communication system according to the present invention which permits a message to be transmitted to a mobile station in emergency communication will be described with reference to FIG. First, the mobile station 2 performing emergency communication in the first system in which the radio base station apparatus 20 is the center of the zone
It is assumed that the mobile station 31 performing emergency communication in the second system, in which the wireless base station device 30 is located at the center of the zone, is performing emergency communication using the communication channels 24 and 34 of the respective zones. The mobile station 25 in the first system uses the control channel 23 of the system to make a connection request to the mobile station 31 that is performing emergency communication in the second system. Send to The radio base station apparatus 20 notifies the control station apparatus 1 of a connection request from the mobile station 25. The control station device 1 is a mobile station 31 of the second system.
Is in emergency communication, the free space of the message storage control unit 50 is checked, and if there is a free space, the communication channel 26 of the wireless base station device 20 is used as a communication channel by the wireless base station device 20 as a communication channel. Specify sending. At this time, the communication channel 26 is notified in a control mode so that a call from the mobile station 25 cannot be made. After the mobile station 25 transitions to the communication channel 26, the control station apparatus 1 notifies the mobile station 25 of a message service message notifying that a call is to be message-registered from voice data in the apparatus. After the notification of the message, the mobile station 25 is notified of a call permission instruction. The mobile station 25 that has received the call permission instruction transmits a message using the designated communication channel 26 to the radio base station apparatus 20.
Notify. The radio base station device 20 notifies the control station device 1 of a message called from the mobile station 25. The control station device 1 records a message message from the mobile station 25 in a message storage control unit 50 in the device.

After the emergency communication mobile station 31 of the second system has completed the emergency communication, the control station apparatus 1 determines the number of message messages in the mobile station 31 by using the control channel 33 of the radio base station apparatus 30. Notify using. The mobile station 31 that has completed the emergency communication notifies the radio base station device 30 of the message reproduction request using the control channel 33. Wireless base station device 30
Notifies the control station device 1 of a message reproduction request. The control station device 1 searches the message storage control unit 50 for a message message to the mobile station 31, and if there is a message, sends a free communication channel 34 in the wireless base station device 30 to the wireless base station device 30 as a communication channel. Assign. The control station device 1 extracts the message message to the mobile station 31 after the emergency communication from the message storage control unit 50, and notifies the communication channel 34 of the message message. When the control station device 1 has finished notifying all message messages to the mobile station 31 after the emergency communication, the control station device 1 notifies the mobile station 31 of a disconnection instruction using the communication channel 34, and the message notification operation ends.

The message-permitted radio communication system according to the present embodiment is effective even when the mobile station moves from the first system to the second system. FIG. 2 is a diagram showing an example of a communication sequence when the zone is moved.
In FIG. 2, the mobile station 22 existing in the zone where the radio base station 10 relays the communication of the mobile station has its communication channel 1
4, when the radio base station 30 moves to the zone for relaying the communication of the mobile station while the message message is being recorded in the message storage control unit 50 of the control station device 1 using the mobile station 22 ′ (the original mobile station 22 ′). The mobile station 22) detects the deterioration of the communication level and notifies the wireless base station 30 of a zone switching communication request. The wireless base station 30 issues a zone switching communication request to the control station device 1. The control station device 1 allocates the open communication channel 17 to the radio base station 30. The radio base station 30 uses the control channel 16 to designate the communication channel 17 to the mobile station 22 ′ that has moved. The mobile station 22 ′ notifies the radio base station 30 of the message using the designated communication channel 17. The control station device 1 notifies the radio base station 10 that the communication channel 14 used by the mobile station 22 has been released, and returns the communication channel 14 to an empty channel. The radio base station 30 notifies the message notified from the mobile station 22 ′ to the zone controller 1, and the zone controller 1 records the message in the message storage controller 50.

In the above description, all message messages are stored and transmitted after the end of emergency communication. However, only messages with a high degree of urgency may be received, stored, and transmitted.

Embodiment 2 FIG. If there is no available communication channel even after the mobile station performing emergency communication ends emergency communication,
The message message cannot be notified to the mobile station for emergency communication or after the end of emergency communication. If a mobile station intending to transmit a message to a mobile station that is in emergency communication, if the message urgency is specified as a priority, the message is stored according to the priority and transmitted according to the priority. Can be. FIG. 3 is a diagram illustrating an example of a communication sequence according to the present embodiment. Hereinafter, the operation of the message-allowed wireless system according to the present embodiment will be described with reference to FIG. The mobile station 22 in the system formed around the wireless base station device 10 uses its communication channel 14 to perform an emergency communication mobile station during emergency communication in the system formed around the wireless base station 30. A message message is transmitted to the wireless base station 10 for 31. The radio base station 10 is the control station 1
Send a message to. The control station device 1 stores the message message transmitted to the message storage control unit 50.
After notifying the message, the mobile station 22 transmits the priority information of the message message to the radio base station 10 using the communication channel 14. The radio base station 10 transmits the priority information of the message message to the control station device 1. The control station device 1 stores the priority of the message message in a file in the device.

After the communication of the emergency communication mobile station 31 is completed, the control station device 1 transmits the number of registered message messages to the emergency communication mobile station 31 to the radio base station 30. Radio base station 30
Transmits the number of registered message messages to the emergency communication mobile station 31 using the control channel 16. The emergency communication mobile station 31 transmits a message playback request to the wireless base station 30 using the control channel 16. The wireless base station 30 transmits a message reproduction request to the control station device 1. Control station device 1
Searches for a free communication channel in the radio base station 30,
If there is no vacant channel, a search is made to see if there is a high-priority message in the registered message messages. Secure a free communication channel. The control station device 1 sets the communication channel 17 to the radio base station 30.
, And the communication channel 17 is specified to the emergency communication mobile station 31. The radio base station 30 transmits a message message to the emergency communication mobile station 31 using the designated communication channel 17. After transmitting all the message messages, the control station device 1 sends a disconnection instruction to the wireless base station 30. The radio base station 30 instructs the emergency communication mobile station 31 to disconnect using the communication channel 17, and ends the message reproduction process.

In the above-described configuration and operation, a case has been described in which a communication channel of a low priority is forcibly disconnected in order to transmit all stored message messages. However, the communication channel may be forcibly disconnected in order to transmit only a message having a higher priority from among the stored message messages. Also, instead of storing all message messages received during an emergency call in the first place, only message messages with high priority may be received and stored.

[0017]

According to the present invention, a message message from another mobile station is stored for a mobile station in emergency communication,
Since the transmission is performed after the end of the emergency communication, there is an effect that the message from the message sender can be reliably transmitted.

Further, even if a plurality of emergency communications are generated, there is an effect that the wireless communication can be effectively used in correspondence with the priority.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a description of a channel and an example of a communication sequence according to Embodiment 1 of the present invention.

FIG. 2 is a diagram illustrating an example of another communication sequence according to the first embodiment.

FIG. 3 is a diagram illustrating a description of a channel and an example of a communication sequence according to Embodiment 2 of the present invention.

FIG. 4 is a communication sequence diagram of a conventional emergency communication system.

[Explanation of symbols]

1 control station device, 10, 20, 30 radio base station device,
12, 15, 22, 32 wireless channels, 13, 16,
23, 33 control channels, 14, 17, 24, 2
6,34 Communication channel, 21,31 Emergency communication mobile station, 22,22'25 Mobile station, 50 Message storage control unit.

Claims (3)

[Claims] 1. A radio communication system comprising a mobile station, a radio base station, and a control station, wherein a communication channel for the mobile station is preferentially assigned to emergency communication. When receiving a communication request from a terminal other than the emergency communication partner to the target mobile station during emergency communication, the message storage control unit stores a predetermined portion of the communication request as a message message, and when the emergency communication ends, the message A message-allowed emergency wireless communication system, wherein the message is transmitted to a target mobile station. 2. Priorities are set for communication requests from terminals other than the emergency communication partner, and when the priority of the communication requests is high,
2. The message-allowed emergency radio communication system according to claim 1, wherein a communication channel having a low priority is forcibly disconnected when the message message is transmitted. 3. The message permitting device according to claim 1, wherein when a communication request from a terminal other than the emergency communication partner is an emergency communication, the communication request is stored as a message and transmitted after the emergency communication ends. Emergency wireless communication system.