JP6596038B2 - Mobile communication system, area registration server, command board, mobile station, and area information registration method - Google Patents

Description

  The present invention relates to a mobile communication system, an area registration server, a command board, a mobile station, and an area information registration method, and in particular, a base station radio apparatus used for communication with a mobile station based on position information transmitted by a plurality of mobile stations. The present invention relates to a mobile communication system, an area registration server, a command board, a mobile station, and an area information registration method.

  The mobile communication system used for firefighting and emergency services always knows the location information from the mobile station, and the mobile station has moved from the current base station radio equipment operation area to another base station radio equipment operation area. It has an area registration server for grasping. This type of mobile communication system is disclosed in Patent Document 1.

  The mobile communication system disclosed in Patent Document 1 includes a radio network controller capable of communicating with a plurality of base station radio devices, and the radio network controller is provided each time a mobile station performs radio communications with a base station radio device. Communication quality information including the received electric field level in the base station radio apparatus is generated and transmitted to the area registration server. The area registration server includes an information input / output unit that receives communication quality information from the radio network controller, and a base station radio device having the highest received electric field level based on the communication quality information received by the information input / output unit. And an information management unit that is set as a base station wireless device that is optimal for wireless communication. This information management unit is configured such that each time radio communication is performed by a mobile station, the received electric field level of the base station radio device set as the optimum base station radio device is a threshold based on the communication quality information received by the information input / output unit. It is determined whether or not this is the case, and if it is equal to or greater than the threshold value, the setting that the base station radio apparatus is the optimum base station radio apparatus is maintained.

JP 2014-33353 A

  In order to keep track of the location information from the mobile station, the mobile station installed in the fire engine or ambulance sends the location information manually by the operator, or automatically sends the location information periodically. Has been. However, in the case of the manual operation method, it is usually difficult for the operator to perform manual operation in real time during movement. In the case of the periodic transmission method, since a plurality of mobile stations are dispatched to the site and the individual mobile stations frequently transmit position information, wireless communication becomes congested, and normal voice communication cannot be performed. Patent Document 1 discloses a technique for reducing the processing load by reducing the frequency of change to the database of the area registration server, but does not disclose a configuration for solving wireless communication congestion from a mobile station.

  An object of the present invention is to provide a mobile communication system, an area registration server, a command board, a mobile station, and an area information registration method that can change a database of an area registration server in real time and suppress congestion of wireless communication. is there.

  A mobile communication system according to an aspect of the present invention includes a command board that selects a representative mobile station that permits transmission of position information from a plurality of mobile stations that are dispatched to a case that has occurred, and mobile station area information of the plurality of mobile stations. An area registration server that registers and updates the mobile station area information of the mobile station that has been dispatched to the same case as the representative mobile station based on reception quality information of the representative mobile station.

  A command board according to an aspect of the present invention includes a dispatch command unit that determines a plurality of mobile stations to be dispatched in a case, and a position information transmission permission unit that selects a representative mobile station that permits transmission of position information from the plurality of mobile stations. It has.

  An area registration server according to an aspect of the present invention includes a database for registering mobile station area information of a plurality of mobile stations dispatched to a case that has occurred, and a representative mobile selected from the plurality of mobile stations and permitted to transmit position information An area information updating unit that updates the mobile station area information of the mobile station that is dispatched to the same case as the representative mobile station based on the reception quality information of the representative mobile station when receiving the reception quality information of the station ing.

  The mobile station according to one aspect of the present invention receives a notification indicating whether or not to transmit position information, and transmits a communication unit that transmits the position information. When the transmission of the position information is permitted by the notification, the communication unit A position information transmission determination unit that transmits the position information.

  An area information registration method according to an aspect of the present invention registers mobile station area information of a plurality of mobile stations dispatched to a case that has occurred, and is selected from the plurality of mobile stations and is allowed to transmit position information Is received, the mobile station area information of the mobile station that is dispatched to the same case as the representative mobile station is updated based on the reception quality information of the representative mobile station.

  ADVANTAGE OF THE INVENTION According to this invention, the database of an area registration server can be changed in real time, and congestion of radio | wireless communication can be suppressed.

FIG. 1 is a block diagram showing the configuration of the first embodiment. FIG. 2 is a diagram illustrating an example of a configuration of mobile station area information according to the first embodiment. FIG. 3 is a diagram illustrating an example of a configuration of reception quality information according to the first embodiment. FIG. 4 is a block diagram showing the configuration of the mobile station of FIG. FIG. 5 is a flowchart showing the operation of the command stand and the area registration server in FIG. 1 when a case occurs. FIG. 6 is a flowchart showing the operation of the mobile station of FIG. 1 when a dispatch command is received. FIG. 7 is a flowchart showing the mobile station area information update operation of the area registration server of FIG.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a system configuration diagram showing a configuration of a mobile communication system 1 according to the first embodiment of the present invention. This embodiment is applicable to a fire and emergency digital mobile communication system.

  As shown in FIG. 1, the mobile communication system 1 includes a command board 100, a radio network controller 200, an area registration server 300, a plurality of base station radio devices 401 to 403, and a plurality of mobile stations 501 to 50N. .

  The mobile communication system of the present embodiment uses, for example, a digital wireless communication technique based on an SCPC (Single Channel Per Carrier) method. The SCPC method is a method in which one carrier frequency is assigned to one radio channel.

  The command board 100 manages the entire system and performs wireless communication with the mobile stations 501 to 50N. When a fire / emergency incident occurs, the dispatch command unit 101 of the command board 100 selects a plurality of mobile stations to be dispatched and transmits the dispatch command to activate the mobile stations 501 to 50N. The mobile stations 501 to 50N are assumed to move from the operation area 401A to the operation area 402B where the incident site 601 is located in cooperation as the mobile station group 600, for example.

  The area registration server 300 includes a database 301 and a database for registering mobile station area information 311 such as a base station in which the mobile station currently exists in the operation area, a channel number being used, and an electric field strength. And an area information update unit 302 that updates mobile station area information 311 registered in 301.

  Base station radio apparatuses 401 to 403 include operation areas 401A to 403A that define a range in which radio communication is possible, and perform radio communication with mobile stations in operation areas 401A to 403A, respectively. The base station radio apparatus 401 is in an operation area 401A, the base station radio apparatus 402 is in an operation area 402A, and the base station radio apparatus 403 is in an area in which the operation area 403A is in radio communication. The base station radio apparatuses 401 to 403 relay radio communications between mobile stations in the operation areas 401A to 403A and between the mobile stations and the command board 100, respectively. Base station radio apparatuses 401 to 403 are arranged such that operation areas 401A to 403A partially overlap each other.

  FIG. 2 is a diagram illustrating an example of a configuration of mobile station area information according to the first embodiment. As shown in FIG. 2, for example, the mobile station area information 311 includes a mobile station number 321 for identifying a mobile station, a case number 322 for identifying an active case, and wireless communication with the mobile station. An optimum optimum base station number 323, a set channel number 324 set when communicating with the mobile station, and an electric field strength 325 indicating the strength of the received electric field at the base station are included.

  The area information update unit 302 receives the reception quality information 700 from the radio network controller 200 when the base station radio devices 401 to 403 receive radio communications from the mobile stations 501 to 50N. FIG. 3 is a diagram illustrating an example of a configuration of the reception quality information 700 according to the first embodiment. As shown in FIG. 3, the reception quality information 700 includes, for example, a mobile station number 701 indicating the mobile station that has transmitted the received wireless communication, a base station number 702 indicating the base station that has received the wireless communication from the mobile station, It includes a channel number 703 indicating the received wireless communication channel and an electric field strength 704 when the wireless communication is received.

  Upon receiving reception quality information 700 from radio network controller 200, area information update unit 302 searches mobile station area information 311 registered in database 301 based on mobile station number 701 included in reception quality information 700. To do. The area information update unit 302 extracts the mobile station area information 311 having the same mobile station number, and registers the base station number 702 of the reception quality information 700 as the optimum base station number 323 of the mobile station area information 311. The area information updating unit 302 registers the channel number 703 of the reception quality information 700 in the set channel number 324 of the mobile station area information 311. The area information update unit 302 registers the electric field strength 704 of the reception quality information 700 in the electric field strength 325 of the mobile station area information 311.

  For example, when the command board 100 inquires the radio network controller 200 about the base station and channel to be selected for the mobile station of the communication partner, the radio network controller 200 inquires the area registration server 300. In the area registration server 300, the area information update unit 302 includes an optimum base station number 323 registered in the mobile station area information 311 in which the mobile station number 321 matches the mobile station of the communication partner from the database 301, and the set channel number 324. Is returned to the radio network controller 200. When the radio network controller 200 returns the optimum base station number 323 and the set channel number 324 to the command board 100, the command board 100 selects the base station radio apparatus based on the optimum base station number 323 and the set channel number 324. Wireless communication is started.

  FIG. 4 is a block diagram showing the configuration of the mobile station of FIG. Although FIG. 4 shows the configuration of the mobile station 501, other mobile stations may have the same configuration. The mobile station 501 is a portable wireless device, a portable wireless device, an in-vehicle wireless device, or the like. As illustrated in FIG. 4, the mobile station 501 includes an operation unit 510, a control unit 520, a communication unit 530, and a storage unit 540.

  The operation unit 510 can output an instruction to the control unit 520 to change the channel number used by the mobile station 501 by the operation of the operator, to start the wireless communication with the mobile station 501, or to stop the wireless communication. .

  The communication unit 530 can transmit radio to the base station radio apparatuses 401 to 403 when communicating with the command board 100 or with other mobile stations. The communication unit 530 receives a notification indicating whether or not position information can be transmitted from the command board 100. In addition, when the communication unit 530 determines that transmission of the position information is permitted by the command board 100, the communication unit 530 transmits the position information.

  The control unit 520 controls the communication unit 530 and the storage unit 540. The control unit 520 causes the communication unit 530 to transmit the position information when the transmission of the position information is permitted by the notification indicating whether or not the position information can be transmitted from the command board 100.

  In the storage unit 540, a mobile station number 541 for identifying the own mobile station and a currently set channel number 542 are registered. When the mobile station 501 is a mobile station that is permitted to transmit location information, the location information transmission permission 543 is registered in the storage unit 540.

  FIG. 5 is a flowchart showing the operation of the command stand and the area registration server in FIG. 1 when a case occurs. As shown in FIG. 5, in the operation in the fire and emergency service, when an incident occurs, the dispatch command unit 101 of the command board 100 first has an incident number for managing the incident by the dispatch command unit 101 and the mobile station to be dispatched. Mobile station numbers indicating 501 to 50N are determined (step S1). Then, the dispatch command unit 101 of the command board 100 transmits the mobile station to be dispatched and the case number to the area registration server 300 (step S2).

  The area registration server 300 searches the mobile station area 311 of the received mobile station number from the mobile station area information 311 registered in the database 301 (step S3).

  The area registration server 300 updates the case number 322 of the searched mobile station area information 311 to the case number received from the command board 100 (step S4). Further, the area registration server 300 replies to the command board 100 with the optimum base station number 323, the set channel number 324, and the electric field strength 325 registered in the searched mobile station area information (step S5). It is determined whether or not the processing of steps S4 and S5 has been completed for all the mobile stations that have been dispatched (step S6), and if there is a mobile station that has not been processed, the processing returns to step S3.

  If the processes of steps S4 and S5 have been completed for all the mobile stations that are dispatched, the position information transmission permission unit 102 of the command board 100 selects a representative mobile station that is permitted to transmit the position information (step S7). The position information transmission permission unit 102 may limit the number of representative mobile stations to one, for example. There are several methods by which the location information transmission permission unit 102 selects a representative mobile station. For example, the position information transmission permission unit 102 may select one unit having the highest electric field strength 325 as the representative mobile station, or the command table 100 includes an operation unit. The position information transmission permission unit 102 is operated by the operator. The representative mobile station may be selected based on the above. The dispatch command unit 101 transmits a dispatch command to the mobile station to be dispatched, and the location information transmission permission unit 102 transmits a notification indicating whether or not the location information can be transmitted (step S8). The location information transmission permission unit 102 transmits a notification indicating whether or not location information transmission is possible to all mobile stations, but the communication destination mobile station number of the notification indicating whether or not location information transmission is possible is the mobile station number of the representative mobile station. Yes. Thus, the location information transmission permission unit 102 permits transmission of location information only to the representative mobile station.

  As shown in FIG. 5, the location information transmission permitting unit 102 periodically transmits location information to all mobile stations after the incident has been completed, such as a fire has been extinguished. A command for permitting is transmitted (step S9).

  FIG. 6 is a flowchart showing the operation of the mobile station in FIG. 1 when receiving a dispatch command. The mobile stations 501 to 50N move in cooperation with the mobile station group 600 to the operation area 402A of the base station wireless device 402 where the incident site 601 is located. When the mobile station 501 to 50N is selected as a mobile station to be dispatched when a case occurs, the mobile station 501 to 50N receives a dispatch command and a notification indicating whether or not to transmit position information from the command board 100 (step S10). When the mobile stations 501 to 50N receive the dispatch command and the notification indicating whether or not the position information can be transmitted, the mobile stations 501 to 50N determine whether or not the transmission of the position information is permitted (step S11). For example, the mobile stations 501 to 50N determine that the transmission of the position information is permitted when the communication destination mobile station number of the notification indicating whether or not the position information can be transmitted is the same as the mobile station number 541 of the storage unit 540 in the mobile station. If the mobile station number is different from the mobile station number 541 in the storage unit 540 of the mobile station, it is determined that transmission of position information is not permitted.

  When the transmission of the position information is permitted in step S11, the mobile stations 501 to 50N register the position information transmission permission 543 in the storage unit 540 (step S12). Then, the mobile stations 501 to 50N periodically measure the position information and transmit the position information obtained by the measurement (step S13).

  If transmission of position information is not permitted in step S11, it is determined whether position information transmission permission 543 is registered in the storage unit 540 (step S14). If position information transmission permission is registered in the storage unit 540, it is deleted. (Step S15), and the mobile station stops the periodic location information transmission (step S16). If the position information transmission permission 543 is not registered in the storage unit 540, the periodic position information transmission is not performed.

  FIG. 7 is a flowchart showing the mobile station area information update operation of the area registration server of FIG. When the representative mobile station transmits the location information, the area registration server 300 receives the reception quality information from the radio network controller 200 (step S20). The area information update unit 302 searches the mobile station area information 311 registered in the database 301, and from the received representative mobile station reception quality information 700, the mobile station number 701, base station number 702, channel number of the representative mobile station. 703 and the electric field strength 704 are extracted (step S21). Next, the area information updating unit 302 searches the mobile station area information 311 of the representative mobile station based on the extracted mobile station number 321 from the mobile station area information 311 registered in the database 301, and the case of the representative mobile station. The number 322 is extracted (step S22).

  Then, the area information updating unit 302 searches the mobile station area information 311 including the same case number 322 as the representative mobile station from the mobile station area information 311 registered in the database 301 (step S23). The area information update unit 302 updates the optimum base station number 323 of the mobile station area information 311 to the base station number 702 of the reception quality information of the representative mobile station. Also, the area information update unit 302 updates the set channel number 324 to the channel number 703 of the received reception quality information of the representative mobile station. Further, the area information update unit 302 updates the electric field strength 325 to the electric field strength 704 of the received reception quality information of the representative mobile station (step S24).

  The area information update unit 302 determines whether all the mobile station area information having the same case number as that of the representative mobile station has been updated (step S25). If there is any information that has not been updated, the process returns to step S23. The area information update unit 302 completes the process if all the information has been updated.

  As described above, according to the present embodiment, there is no need for the mobile station to notify the location information during dispatch to the incident site, and there is no congestion due to frequent location information notification from all mobile stations. It is possible to make a reliable call in a short time in highly reliable fire and emergency services.

  The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Mobile communication system 100 Command board 101 Dispatch command part 102 Position information transmission permission part 200 Radio network controller 300 Area registration server 301 Database 302 Area information update part 311 Mobile station area information 321 Mobile station number 322 Case number 323 Optimal base station number 324 Setting channel number 325 Electric field strength 401, 402, 403 Base station wireless device 401A, 402A, 403A Operation area 501-50N Mobile station 510 Operation unit 520 Control unit 530 Communication unit 540 Storage unit 541 Mobile station number 542 Channel number 543 Location information Transmission permission 600 Mobile station group 601 Case site 700 Reception quality information 701 Mobile station number 702 Base station number 703 Channel number 704 Electric field strength

Claims (7)

A command board for selecting a representative mobile station that permits transmission of position information from a plurality of mobile stations that are dispatched to the incident that has occurred,
Area registration for registering mobile station area information of the plurality of mobile stations, and updating the mobile station area information of the mobile station currently dispatched in the same case as the representative mobile station based on reception quality information of the representative mobile station Server,
I have a,
The mobile station area information and the reception quality information include a mobile station number,
The area registration server extracts a mobile station number from the reception quality information of the representative mobile station, searches the mobile station area information of the representative mobile station based on the mobile station number, and A mobile communication system that extracts a case number for identifying an article plan . The command board determines a case number for identifying the case, transmits the case number to the area registration server,
The mobile communication system according to claim 1, wherein the area registration server registers the case number in the mobile station area information. The mobile station area information and the reception quality information include a base station number,
The area registration server updates based base station number of the mobile station in the turnout in the same cases as the representative mobile station to the base station number included in the received quality information of the representative mobile station, according to claim 1 or 2. The mobile communication system according to 2. The command system, the plurality of the one of the mobile stations selected as the representative mobile station, the mobile communication system according to any one of claims 1 to 3, dispatched to the case. The command board transmits a notification permitting transmission of position information to the mobile stations other than the representative mobile station after the case is completed.
The mobile communication system according to any one of claims 1 to 4 . A database for registering mobile station area information of a plurality of mobile stations dispatched to the incident,
Updating the previous SL mobile station area information of the mobile station in the turnout in the same cases as the representative mobile station based on the reception quality information of the representative mobile station the transmission of the position information selected from said plurality of mobile stations is permitted An area information update unit;
I have a,
The mobile station area information and the reception quality information include a mobile station number,
The area information update unit extracts a mobile station number from the reception quality information of the representative mobile station, searches the mobile station area information of the representative mobile station based on the mobile station number, and An area registration server that extracts a case number for identifying the case . Register the mobile station area information of multiple mobile stations dispatched to the incident that occurred,
Updating the mobile station area information of the mobile station that has been dispatched to the same case as the representative mobile station based on the reception quality information of the representative mobile station selected from the plurality of mobile stations and permitted to transmit position information ,
The mobile station area information and the reception quality information include a mobile station number,
When updating the mobile station area information, extract the mobile station number from the reception quality information of the representative mobile station, search the mobile station area information of the representative mobile station based on the mobile station number, An area information registration method for extracting a case number for identifying the case of a representative mobile station .

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