WO2002035868A1 - Dispositif et systeme de communication mobile - Google Patents

Dispositif et systeme de communication mobile Download PDF

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Publication number
WO2002035868A1
WO2002035868A1 PCT/JP2000/007452 JP0007452W WO0235868A1 WO 2002035868 A1 WO2002035868 A1 WO 2002035868A1 JP 0007452 W JP0007452 W JP 0007452W WO 0235868 A1 WO0235868 A1 WO 0235868A1
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WO
WIPO (PCT)
Prior art keywords
mobile communication
information
unit
vehicle
transmission
Prior art date
Application number
PCT/JP2000/007452
Other languages
English (en)
Japanese (ja)
Inventor
Akio Mukai
Kazuhisa Shibafuji
Original Assignee
Fujitsu Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2000/007452 priority Critical patent/WO2002035868A1/fr
Priority to JP2002538702A priority patent/JPWO2002035868A1/ja
Publication of WO2002035868A1 publication Critical patent/WO2002035868A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications

Definitions

  • the present invention relates to a mobile communication device and system, and more particularly to a mobile communication device that transmits and receives information to and from a center device via a wireless line, and a mobile communication system configured with the mobile communication device and the center device. is there.
  • the center device and the plurality of mobile communication devices exchange information in real time with each other and function jointly based on this information. is important.
  • An example of a conventional mobile communication system is a command and control system in the fields of firefighting, police, and the like.
  • This command control system is composed of a plurality of vehicles 20-1 to 20-n equipped with a center device 10 and a mobile communication device (hereinafter, the mobile communication device is referred to as a vehicle, and may be collectively referred to by reference numeral 20). It is configured. Information is transmitted and received between the center device 10 and each vehicle 20 via a wireless line.
  • the number of vehicles 20 dispatched for disaster (fire extinguishing) activities is several to several tens depending on the disaster situation.
  • the transmission rate and the wavelength / channel assignment of the radio link between the center device 10 and the vehicle 20 are as follows.
  • Transmission speed 9600bps or 28.8kbps
  • Information transmitted and received between the center device 10 and the vehicle 20 via a wireless line includes the following.
  • FIG. 11 shows a more detailed configuration example of the center device 10 and the vehicle 20 shown in FIG.
  • the center device 10 includes a wireless line transmitting / receiving unit 12 for connecting to the vehicle 20 via a wireless line, a vehicle managing unit 13 for managing the vehicle 20 via the wireless line transmitting / receiving unit 12, and a LAN 14 for the vehicle managing unit 13. It is composed of a connected reception workstation (WS) 15, for example, an NTT line 17 and an exchange 16 for transmitting information from the “119” notifier 18 to the workstation 15.
  • WS connected reception workstation
  • the vehicle 20 includes an antenna 21, a vehicle wireless line transmitting / receiving unit 22 that connects to the center device 10 via the antenna 21 via the above-described wireless line, and a vehicle 20 connected to the vehicle wireless line transmitting / receiving unit 22.
  • a navigation device 25 that displays the current position of the vehicle, and an automatic vehicle monitor (AVM) device (vehicle dynamic setting unit) 26 that sets the dynamics of the vehicle.
  • AAVM automatic vehicle monitor
  • the "119" caller 18 is notified of the occurrence of the disaster to the fire center device 10 (in the example of the figure, a report by a mobile phone).
  • the operator of the workstation 15 listens to the details of the disaster (the location where the disaster occurred, the type of disaster and the situation thereof), inputs the details to the workstation 15, and sends a command (electronic). Document).
  • the vehicle management unit 13 determines the dispatch target vehicle based on the contents of the command document, and transmits the command document to the dispatch target vehicle 20 via the wireless line transmission / reception unit 12. Note that the target vehicles 20 may be dispersed and waiting at different locations.
  • the contents of the instruction document are transmitted to, for example, the navigation device 25 via the vehicle wireless line transmitting / receiving unit 22 and displayed.
  • the operator workstation 15 transmits through the vehicle manager I 3 the detailed information of the field in the vehicle 20. Each vehicle 20 navigates the detailed site information received. Is displayed on the display of the device 25.
  • the position management information of each vehicle 20 is coordinated by the GPS (Global Positioning System) function of the navigation device 25 and is periodically transmitted to the vehicle management unit 13 of the center device 10 via a wireless line. You. This notification is made by a response to the position management information collection request from the center device 10 or by a voluntary notification from the navigation device 25.
  • GPS Global Positioning System
  • the activity information of the dispatched vehicles 20 is transmitted via a wireless line by the operator of each vehicle 20 performing an operation of pressing a dynamic setting button of a vehicle dynamic setting section of the AVM device 26 corresponding to each activity. And transmitted to the center device 10.
  • the detailed information on the actual site is transmitted to the center device 10 via a wireless line.
  • the received activity information and the detailed information of the site are notified to the vehicle management unit 13.
  • the vehicle management unit 13 manages all position management information, activity information, and detailed site information collected from each vehicle 20 dispatched by the command. Further, the vehicle management unit 13 transmits the position management information and the activity information to all the dispatched vehicles 20.
  • Such a conventional mobile communication system has the following problems.
  • the transmission speed of the wireless line between the center device 10 and the vehicle 20 is low, and the amount of information transferred is small.
  • the position management information of each vehicle 20 is updated in real time by the GPS function of the navigation device 25, but only a part thereof (for example, in a ten-second cycle) can be transmitted to the center device 10.
  • the vehicle position displayed on the center device 10 and the vehicle 20 may not be continuously displayed, but may be displayed intermittently.
  • the transmission speed of the wireless line is low, it takes a long time to transfer data with a large amount of information (for example, information such as a drawing, a map, and an image) between the center device 10 and the vehicle 20.
  • the present invention provides a mobile communication device for transmitting / receiving information to / from a center device via a wireless line, and a mobile communication system including the mobile communication device and the center device, in which a wireless channel condition is determined. It is an object of the present invention to make it possible to quickly transfer the management information even when the management information deteriorates. Disclosure of the invention
  • the mobile communication system of the present invention comprises a first transmission / reception unit for the radio channel, and a second transmission / reception for a second radio channel connected to another mobile communication device. And a management unit for holding the information, wherein the second transmission / reception unit transmits the information to the second transmission / reception unit of the another mobile communication device via the second wireless line.
  • the management unit receiving the information from the second transmission / reception unit updates the information with the latest information.
  • FIG. 1 shows a principle configuration of a mobile communication system according to the present invention.
  • This mobile communication system is different from the conventional mobile communication system shown in FIG. 10 in that each mobile communication device 20 has a wireless line connecting the center device 10 and each mobile communication device (vehicle) 20_1 to 20_ ⁇ .
  • it is connected by a second wireless line, for example, wireless LAN 28, which is faster than the wireless line.
  • each mobile communication device 20 includes a second transceiver (not shown) for the wireless LAN 28 and information transmitted and received by the wireless LAN 28 in addition to the first transceiver (not shown) for the wireless line.
  • a management unit (not shown) that manages the information is provided.
  • the mobile communication devices mounted on emergency vehicles etc. are concentrated at the disaster site, for example, so no line failure has occurred on the wireless LAN 28 Since the possibility is high, for example, the mobile communication device 20_1 having no line failure transmits the information received from the center device to another mobile communication device via the second transmission / reception unit and the wireless LAN.
  • the management unit in the mobile communication device 20_2 moves via the second transmission / reception unit. It receives information from the communication device 20_1 and updates it to the latest one. That is, the management unit updates the already held information with newer information.
  • each mobile communication device 20 to directly transmit and receive information via the wireless LAN 28 even if, for example, a failure occurs in the wireless line with the center device 10, so that the latest information can be constantly updated. It is held.
  • the information can be used as management information of a radio link failure detected by the first transmitting / receiving unit.
  • the failure management information is transferred between the mobile communication devices via the wireless LAN 28, and thereby each mobile communication device 20 is transmitted. In this case, it is possible to manage the latest radio line failure status of all the mobile communication devices 20 in real time, including the mobile communication device 20 in which the radio line failure has occurred.
  • the information is position management information of each mobile communication device. It may have a position detecting unit for outputting.
  • the position detection unit detects the position of the own device and outputs position management information.
  • the management unit of each mobile communication device 20 includes the mobile communication device 20 in which the radio line failure has occurred.
  • the latest location management information of all mobile communication devices can be managed in real time.
  • the management unit may determine that the radio line of the own device is normal.
  • the information collected from the own device and other mobile communication devices is transmitted to the first transmission / reception unit. Through this, it can be transmitted to the center device.
  • the center device 10 can compare the information of all the mobile communication devices, for example, the radio line fault management information or the location management information, with the conventional method of directly collecting the information for each mobile communication device via the radio line. Can be collected by one reception from the mobile communication device. Therefore, information of all mobile communication devices can be collected at high speed. Also, c it becomes possible to also together collecting position management information of the mobile communication device failure to the radio network occurs
  • the information from the center device has an identifier corresponding to the type, and the management unit corresponds to the identifier. And a management table for storing the latest information. That is, in the figure, the center device 10 transmits the information to the mobile communication devices 20_1 to 20n, for example, by broadcasting.
  • the management unit extracts an identifier from the received information, stores the information in a table of a type corresponding to the identifier, and stores the information in the second transmission / reception unit in the same manner as described above. And transmits the information to another mobile communication device via the wireless LAN 28.
  • the center apparatus 10 can reliably transmit the information to, for example, the mobile communication apparatus 20-2 in which a failure has occurred in the wireless line according to the type.
  • the mobile communication device 20-2 receives the management information from all the mobile communication devices with normal wireless channels, but the selection method may be determined in advance.
  • the information includes the fault management information and the dynamic management information
  • the management unit uses the fault management information to transmit a wireless signal of its own device.
  • the failure management information and the dynamic management information are transmitted to another predetermined mobile communication device in which no wireless line failure has occurred via the wireless line of (2).
  • the failure management information and the dynamic management information received from the own device or the other communication device are transferred to the center device via the own device's wireless line. Is possible.
  • the management unit manages the failure status of the wireless lines of all the mobile communication devices.
  • the management unit determines the fault management information.
  • the mobile communication device for example, the mobile communication device 20-1 from which the wireless communication line failure has not occurred is known to the mobile communication device 20-1 via the second transmission / reception unit and the wireless LAN 28.
  • the second transmitting / receiving unit of the mobile communication device 20-1 transfers the information of the own device and the received information to the center device 10 via the first transmitting / receiving unit and the wireless line.
  • the center device divides the information destined for the predetermined mobile communication device into a plurality of data, and an information division transmitting unit that divides each of the divided data into different data.
  • a radio line transmitting / receiving unit for transmitting via any of the plurality of radio lines, wherein the mobile communication device includes a first transmission / reception unit for the radio line and a second transmission / reception unit connected to another mobile communication device.
  • a second transmission / reception unit for a radio line, and data received from the first transmission / reception unit and not destined for the own device are transmitted to the destination mobile communication device via the second transmission / reception unit and the second radio line.
  • a divided data assembling processing unit for assembling the data addressed to the own device received from the first transmitting / receiving unit and the second transmitting / receiving unit into the original information.
  • the information division transmitting unit (not shown) divides, for example, information addressed to the mobile communication device 20_1 into n pieces of data.
  • the wireless line transmitting / receiving unit transmits these divided data to the mobile communication devices 20_1 to 20_n via, for example, one of a plurality of wireless lines having different frequencies. At this time, it is assumed that the wireless line between the center device 10 and the mobile communication device 20-2 is normal.
  • the divided data assembling processing unit transmits the data received from the first transmission / reception unit to the destination mobile communication device 20-1 via the second transmission / reception unit and the second wireless line. Transfer via
  • the divided data assembling processor assembles the data addressed to the own device received from the wireless line and the second wireless line into the original information.
  • the transmission time of the second radio line is compared with the transmission time of the radio line, compared with the case where the information is transmitted only via the radio line between the center device 10 and the mobile communication device 20-1. If it is ignored, the information can be transferred from the center device 10 to the mobile communication device 20-1 at a transmission speed almost n times.
  • the mobile communication device may A second transmitting / receiving unit for a second wireless line connected to another mobile communication device; a divided data transmission processing unit; and a management unit, wherein the divided data transmission processing unit is The management unit divides the information addressed to the device into a plurality of data, and divides each of the divided data into the first transmission / reception unit, the wireless line, the second transmission / reception unit, and the second transmission / reception unit.
  • the first transmitting / receiving unit transmits the data received from the other mobile communication device via the second transmitting / receiving unit in a distributed manner to another mobile communication device via the wireless line.
  • the center device is provided with a divided data assembling processing unit that assembles data received from each of the plurality of wireless lines into the original information via the wireless line corresponding to I have.
  • the divided data transmission processing unit divides information addressed to the center device 10 into m pieces of data.
  • the management unit transmits one divided data to the center device 10 via the first transmission / reception unit and the wireless line, and transmits the remaining (m-1) divided data.
  • Each is transmitted to the mobile communication devices 20-2 to 20-m via the second transmitting / receiving unit and the second wireless line.
  • the wireless line between the center device 10 and the mobile communication device 20-1 is normal.
  • the second transmission / reception unit sends the received data to the first transmission / reception unit, and the first transmission / reception unit transfers the data to the center device 10 via the wireless line corresponding to the own device. .
  • a divided data assembling processing unit (not shown) assembles data received from each wireless line into the original information.
  • the information is fault management information
  • the management unit determines a mobile communication device having a normal wireless line from the fault management information. Knowing that the data can be distributed to the center device via the wireless line of a normal mobile communication device in which no fault has occurred in the wireless line including the own device, and the data can be transmitted to the center device. You.
  • the divided data transmission processing unit knows, from the fault management unit, the mobile communication device 20 in which a fault has occurred in the wireless channel.
  • the processing unit transmits tn data via the second wireless line to the mobile communication device 20_3. ---Disperse and send to 20_m + 2.
  • the mobile communication device 20-3, 20-m + 2 transfers each data to the center device 10 via the second transmission / reception unit and the first transmission / reception unit.
  • FIG. 1 is a block diagram showing the principle of the mobile communication system according to the present invention.
  • FIG. 2 is a block diagram showing a configuration example of a mobile communication device (vehicle) in the mobile communication system according to the present invention.
  • FIG. 3 is a block diagram showing a configuration example of a center device in the mobile communication system according to the present invention.
  • FIG. 4 is a block diagram showing an embodiment (1) of the mobile communication device according to the present invention.
  • FIG. 5 is a block diagram showing embodiments (2) and (3) of the mobile communication device according to the present invention.
  • FIG. 6 is a block diagram showing an embodiment (4) of the mobile communication device according to the present invention.
  • FIG. 7 is a block diagram showing an embodiment (5) of the mobile communication device according to the present invention.
  • FIG. 8 is a block diagram showing an embodiment (6) of the mobile communication device and the system according to the present invention.
  • FIG. 9 is a block diagram showing an embodiment (7) of the mobile communication device and the system according to the present invention.
  • FIG. 10 is a block diagram showing a configuration example of a conventional mobile communication system.
  • FIG. 11 is a block diagram showing a more detailed configuration example of a conventional mobile communication system. Explanation of reference numerals
  • FIG. 2 shows a configuration example of a mobile communication device (vehicle) 20 used in the mobile communication system according to the present invention.
  • the vehicle 20 includes a vehicle wireless line transmitting / receiving unit 22 as a first transmitting / receiving unit for connecting to the center device 10 (see FIG. 1) via a wireless line, and a wireless LAN serving as a second wireless line between the plurality of vehicles 20.
  • Wireless LAN transmission / reception unit 23 as a second transmission / reception unit for connection by vehicle, vehicle information management device 24 that manages vehicle information, navigation device 25 that detects and displays the position of vehicle 20, and AVM device 26 that monitors the vehicle , which are interconnected by a bus 50. Further, the vehicle 20 includes an application unit 27 connected to the vehicle information management device 24.
  • the vehicle information management device 24 includes a reception management unit 40 that receives data from the vehicle wireless line transmission / reception unit 22 and the wireless LAN transmission / reception unit 23, a transmission management unit that transmits data to the vehicle wireless line transmission / reception unit 22 and the wireless LAN transmission / reception unit 23. 41, a vehicle wireless failure management unit 42 for managing the failure status of the vehicle wireless line, and a position management unit 43 for managing the vehicle position.
  • the management device 24 includes a divided data assembly processing unit 44 connected to the reception management unit 40, a divided data transmission processing unit 45 connected to the transmission management unit 41, and another information transmission unit 46.
  • the transmission processing unit 45 and other information transmission unit 46 are connected to the ablation unit 27.
  • FIG. 3 shows a configuration example of the center device 10 used in the mobile communication system according to the present invention.
  • the difference between the center device 10 of the present invention and the conventional center device 10 shown in FIG. 11 lies in the internal configuration of the vehicle management unit 13, and as shown in FIG. And an information division transmitting unit 34 is newly added.
  • the vehicle management unit 13 receives the information from the divided data assembling unit 32, which assembles the divided data from the reception managing unit 31 and gives it to the LAN transmitting unit 36 and the application unit 33, and the application unit 33 and the LAN receiving unit 35.
  • An information dividing and transmitting unit 34 for dividing the signal and transmitting the divided signal to the wireless line transmitting and receiving unit 12 is provided.
  • Example (1) Example of operation of vehicle wireless fault management performed between a plurality of vehicles 20_l to 20_n (see Fig. 4)
  • the vehicle wireless fault management according to the embodiment (1) is a basic technique used in embodiments (2) to (6) of the present invention described later. As shown in FIG. This is performed by the unit 22, the wireless LAN transmission / reception unit 23, and the vehicle wireless obstacle management unit 42.
  • each vehicle 20_l to 20_n is connected to a center device 10 (see Fig. 2) via a wireless line via a vehicle wireless line transmitting / receiving unit 22, and information (for example, management information) is transmitted between the center device 10 and each vehicle 20. Information).
  • the vehicles 20 are interconnected by a wireless LAN 28 via a wireless LAN transmission / reception unit 23, and can also transmit and receive information (for example, management information).
  • the center device 10 transmits information such as "order: disaster location (coordinates), disaster type (fire, etc.), dispatched vehicle (vehicle code A, B,..., X) via a vehicle wireless line. Is transmitted to all vehicles 20 by, for example, the same broadcast at the same frequency. This command may be transmitted by allocating an individual frequency to each vehicle 20.
  • the vehicle wireless fault management unit 42 of all the dispatched vehicles 20 receives the “command” via the vehicle radio line transmitting / receiving unit 22, extracts the dispatched vehicle information in the command, and performs a vehicle radio fault management table 61. Create
  • This table 61 is composed of “priority”, “vehicle code” of all dispatched vehicles 20, and “trouble management information” indicating the radio circuit fault status.
  • the “priority” is managed by the center device 10 and may be specified, for example, in the order in which the dispatched vehicle codes in the command are transmitted. “Vehicle code” is initially set to “0”.
  • vehicle wireless fault management unit 42 transmits the created table 61 to the other dispatched vehicles 20 via the wireless LAN transmitting / receiving unit 23 and the wireless LAN 28.
  • the vehicle wireless fault management unit 42 of the other vehicle 20 ignores the table 61 received via the wireless LAN transmission / reception unit 23 if the table 61 has already been created based on the instruction, and if not created, However, the received table 61 is set as the own table 61, and the command is ignored.
  • the fault management unit 42 of the vehicle 2 0 can not receive the command sheet for the radio line failure even via the wireless LAN transceiver 23, each vehicle 20
  • the fault management unit 42 can create the table 61 at a higher speed than in the case where the table 61 must be created based on the instruction document.
  • each vehicle 20 is set in the vehicle dynamics setting section 49 of the AVM device 26 by “Return”. When set, it is deleted as the end of the disaster activity of own vehicle 20.
  • the vehicle wireless line transmitting / receiving unit 22 notifies the failure management unit 42 when detecting a wireless line failure caused by deterioration of the wireless line condition and a hardware failure.
  • the center device 10 periodically polls each vehicle 20.
  • the vehicle wireless line transmission / reception unit 22 of each vehicle 20 detects whether or not polling is received within a certain period of time. If the polling cannot be detected, it is determined as “wireless line failure”. Or "Recovery from radio link failure”.
  • the failure management unit 42 When receiving the notification of the wireless line failure from the transmitting / receiving unit 22, the failure management unit 42 sets “failure management” corresponding to the vehicle code of the own vehicle in the table 61 to “1” (radio line failure), and The “self-vehicle code + failure status (wireless circuit failure)” is notified to the other vehicles 20 registered in the table 61 via the LAN transmission / reception unit 23.
  • the fault management unit 42 receives “other vehicle code + wireless line status (wireless line failure)” from another vehicle 20 via the wireless LAN 28 and the wireless LAN transmitting / receiving unit 23, the fault management unit 42 Set “Fault management” corresponding to the vehicle code to "1".
  • the vehicle wireless line transmitting / receiving unit 22 notifies the failure managing unit 42 when the wireless line is restored.
  • the failure management unit 42 updates the “fault management” corresponding to the own vehicle code in the table 61 to “0” (no wireless line failure), and transmits the “own vehicle code + Notify other vehicle 20 registered in table 61 of "failure status (wireless circuit failure recovery)".
  • the failure management unit 42 receives “other vehicle code + failure status (wireless circuit failure recovery)” via the wireless LAN 28 and the wireless LAN transmission / reception unit 23, the failure management unit 42 corresponding to the other vehicle code in the table 61 Update "Management" to "0" (no radio link failure). As a result of the above operation, a radio line failure occurs in the table 61 of all dispatched vehicles 20. The latest failure status of the wireless line of all dispatched vehicles 20 including the existing vehicle 20 is updated in real time.
  • each vehicle 20 can notify each vehicle 20 of the status of all vehicles 20 by notifying each other of various vehicle statuses via the wireless LAN 28 without being limited to the failure of the wireless line. It is also possible to
  • Embodiment (2) Operation example of updating position management information of dispatched vehicle 20 between vehicles (see FIG. 5) As shown in FIG. In addition to the functions indicated by, a position management unit 43 and a navigation device 25 including a GPS position detection unit 48 and a navigation display processing unit 47 are involved.
  • the position management unit 43 includes an all-vehicle position management table 63 that manages the positions of all dispatched vehicles 20.
  • the table 63 includes a “priority”, a “vehicle code”, and a “vehicle position” area.
  • the position management unit 43 refers to the table 61, and determines the “priority” of the table 61.
  • the table 63 can be created by copying the “vehicle code” area and adding the “vehicle position: x / y coordinates” area. Alternatively, similarly to the case of the table 61, the information may be created based on a command from the center device 20.
  • the vehicle 20 detects the position of the own vehicle by the GPS position detection unit 48 and displays the position on the navigation display processing unit 47.
  • the GPS position detection unit 48 transmits the detected position management information (x / y coordinates) to the position management unit 43, and the position management unit 43 stores the “vehicle position” corresponding to the “vehicle code” of the own vehicle. Update with location management information.
  • the position management unit 43 transmits the “vehicle code” of the own vehicle + “position management information (x / y coordinates)” to all vehicles other than the own vehicle registered in the table 63 via the wireless LAN transmission / reception unit 23. Notify 20.
  • the position management unit 43 updates the table 63 based on the “vehicle code” + “position management information (x / y coordinates)” information of the other vehicle received via the wireless LAN transmitting / receiving unit 23. Further, each time the table 63 is updated, the position management unit 43 requests the navigation display processing unit 47 to display the position of another vehicle.
  • each vehicle 20 transmits the position management information of the own vehicle to the center device 10 via the wireless line to the center device 10 via the conventional procedure, and transmits the position management information collected by the center device 10 via the wireless line. This makes it possible to update the position management information of all the vehicles 20 at a higher speed as compared with the procedure of notifying all the vehicles 20).
  • the position of each vehicle 20 displayed on the display processing unit 47 can be displayed in a continuous form with the movement.
  • the latest position management information can be obtained even for the vehicle 20 in which the wireless line failure has occurred.
  • Embodiment (3) An example in which the center device 10 receives and updates the position management information of all the dispatched vehicles 20 at high speed (see FIG. 5).
  • the position management unit 43 of each vehicle 20 manages the position management information of all the vehicles 20 in the table 63.
  • the position management information of all vehicles 20 is periodically transmitted to the center device 10 via the vehicle wireless circuit transmitting / receiving unit 22 or every time the position management information is changed. Send to
  • the position management unit 43 refers to the table 61 instead of the table 63, and when the own vehicle has the highest priority among the vehicles in which the radio line has not failed, the position management unit 43 obtains the position management information of all the vehicles 20. The information may be transmitted to the center device 10.
  • the center device 10 can receive the position management information of all the vehicles 20 collected by the position management unit 43 via the high-speed wireless LAN 28 in one short transfer time via a wireless line.
  • the position of each vehicle displayed on the center device 10 is continuously displayed as the vehicle moves, and is not displayed intermittently.
  • the center device 10 can also collect the position management information of the vehicle 20 in which the radio line failure has occurred.
  • Embodiment (4) An example of operation of the vehicle 20 when receiving command information and detailed information (for example, information on a disaster point) from the center device 10 (see FIG. 6).
  • the reception management unit 40 and the display processing unit 47 (the navigation display processing of the navigation device 25) Department 47) is further involved.
  • the reception management unit 40 includes a command information reception table 62-1, a detailed information reception table 62_2,..., Etc. corresponding to the type of management information (command information, detailed information). ).
  • the reception management unit 40 receives the management information from the center device 10 via the vehicle wireless line transmission / reception unit 22.
  • An ID (identifier) corresponding to the type of information is added to the management information, and the reception management unit 40 stores the management information in the corresponding information reception table 62 based on the ID.
  • the reception management unit 40 refers to the vehicle wireless obstacle management table 61 and transmits the received management information to all the vehicles 20 other than the own vehicle registered in the table 61 via the wireless LAN transmission / reception unit 23. For example, it is notified by broadcast.
  • the reception management unit 40 of the other vehicle 20 receives the management information via the wireless LAN transmission / reception unit 23. Then, the reception management unit 40 extracts the management information having the same ID from table 6 2 determines whether the same as that received management information, if the management information to each other only to One Do different, correspond on the basis of the ID The management information is discarded if they are the same.
  • This discarding operation is performed at most (the total number of dispatched vehicles or the number of wireless circuits—1) because there is a possibility that the same information is received from all dispatched vehicles 20 other than the own vehicle.
  • the reception management unit 40 may refer to the table 61 and notify the reception information only to the other vehicle 20 in which the radio line failure has occurred. In this case, the load on the wireless LAN 28 can be reduced.
  • the center device 10 transmits the management information addressed to the vehicle in which the wireless line failure has occurred to the vehicle 20 having the normal wireless line, This vehicle 20 may transfer the information to the destination vehicle 20. This also makes it possible to update the information in the table 62 of the vehicle 20 in which the radio line failure has occurred.
  • Embodiment (5) An operation example when information is transmitted from the vehicle 20 to the center device 10 (FIG. 7. reference)
  • the information transmission operation according to the embodiment (5) includes a transmission management unit 41 that forms a management unit together with a vehicle radio failure management unit 42, a vehicle operation state.
  • the setting unit 49 and the other information transmitting unit 46 are involved.
  • the vehicle dynamics setting unit 49 and the other information transmitting unit 46 respectively transmit the vehicle dynamics management information such as the above-mentioned vehicle departure, arrival, water discharge, fire extinguishing, returning home, and, for example, from the application unit (see FIG. 2). Is transmitted to the transmission management unit 41.
  • the transmission management unit 41 refers to the table 61 via the failure management unit 42 and, when the wireless line of the own vehicle is normal, transmits the vehicle dynamics management information and the failure management information via the vehicle wireless line transmission / reception unit 22.
  • the “management information” including “” is transmitted to the center device 10.
  • the transmission management unit 41 refers to the table 61 and searches for a code of a vehicle having the highest priority among vehicles in which no wireless line failure has occurred. Then, by transmitting the “vehicle code” + “management information” via the wireless LAN transmitting / receiving unit 23, the “management information” is reliably transmitted to the vehicle of the “vehicle code”.
  • the vehicle 20 corresponding to the vehicle code is determined to have been requested to transfer the "management information" to the center unit 10 based on the content of the "management information", and passed through the vehicle wireless line transmission / reception unit 22. And transfer.
  • the vehicle 20 having the radio line failure can surely transmit the ⁇ management information J '' of the own vehicle to the center device 10 via the vehicle 20 having no radio line failure. .
  • Embodiment (6) Operation example when the center device 10 transmits a large amount of data to the vehicle 20 (see FIG. 8)
  • the application section 33, the information division transmission section 34, and the wireless line transmission / reception section 12 among the functions of the center apparatus 10 shown in FIG. 3 are particularly involved.
  • the information transmission source application unit 33 transmits the large-capacity data 51 to the information division transmission unit 34.
  • the transmitting unit 34 converts the data 51 into a predetermined fixed length, for example, m divided data 51-1 to 5 m. Divided into
  • the section 34 includes, for each of the divided data 51 1 to 51 _m, a “division serial number” indicating the serial number (“1” to “′”), a “division number—“ m ”” indicating the number of divided data, and the divided data 51_1 to 51 — receiving a ra creating a "parent vehicle code” a message obtained by adding respectively (packet) 5 2- 1 ⁇ 5 2- m for specifying the vehicle 20 to restore the original data 51.
  • the transmitting unit 34 requests the wireless line transmitting / receiving unit 12 to transmit to the vehicle 20 through a plurality of wireless lines (for example, a plurality of different frequencies).
  • the wireless line transmitting and receiving unit 12 transmits messages 52-11 to 52-m to the vehicles 20-1 to 20_m, respectively, for example, using an m-channel wireless spring.
  • the transmission of 16 messages is repeated or the original data 51 is divided into 16 divided data. It may be divided into 16.
  • FIG. 2B shows an operation example of the vehicles 201-11 to 20- ⁇ , which receive the messages 52-1 to 52-m transmitted by the center device 10 via the wireless lines, respectively.
  • the reception operation of the vehicle 20 involves the reception management unit 40, the divided data assembly processing unit 44, and the application unit 27.
  • the reception management unit 40 receives the message 52-1 via the vehicle wireless line transmission / reception unit 22, and transmits the message 52-1 to the divided data assembly processing unit 44.
  • the assembling processing unit 44 secures a restored data area 53 based on the “number of divisions” and the divided data length of the message 52-1. Write “divided data 51-1 1” to the divided data area 53-1 of the restored data area 53.
  • the divided data assembling processing unit 44 receives the message 52_2 via the vehicle wireless line transmission / reception unit 22 and the reception management unit 40, and receives the “parent vehicle code” of the message 52-2. Is not the vehicle code, the message 52-2 is transferred to the vehicle 20-1 of the "parent vehicle code” via the wireless LAN transmission / reception unit 23 and the wireless LAN 28. Similarly, in the case of the vehicles 20-3 to 20-m, the messages 52-3 to 52-m are transferred to the vehicle 20-1 via the wireless LAN transmitting / receiving unit 23 and the wireless LAN 28. In the vehicle 20-1, the assembling processing unit 44 receives the message 52-2 addressed to the own vehicle via the wireless LAN transmission / reception unit 23 and the reception management unit 40.
  • the assembling processing unit 44 writes the divided data 51-3 to 5-5m in the divided data area 53-1 to 51-m, and the original data 51 transmitted by being divided from the center device 10 is transmitted to the parent device. This means that the data has been transferred to the restored data area 53 of the vehicle 20-1.
  • the assembling processing section 44 when all the divided data 5 to 1 to 5 m are written in the restored data area 53 and the data assembling is completed, the data 51 restored in the restored data area 53 is applied to the application data.
  • the restored data 51 is transmitted to all the vehicles 20_2 to 20-m other than the own vehicle registered in the table 61 via the wireless LAN transmitting / receiving unit 23 and the wireless LAN 28.
  • the assembly processing unit 44 transmits the restored data 51 received via the wireless LAN transmitting / receiving unit 23 to the application unit 27.
  • the large amount of data 51 is transmitted from the center device 10 to the application unit 27 of all the vehicles 20.
  • This transfer rate ignores the high-speed wireless LAN 28 transfer rate as compared with the transfer rate of the conventional method in which the center device 10 transfers a large amount of data 51 to one vehicle 20 via one wireless line. If this is done, it will be almost one-third the number of wireless lines.
  • the center apparatus 10 detects a failure in the wireless line between the own apparatus and each vehicle based on whether or not there is a response from the vehicle by the above-described periodic polling, and uses the wireless line in which the failure has occurred. It may not be necessary.
  • Embodiment (7) Contrary to embodiment (6), an operation example of transferring a large amount of data from the vehicle 20 to the center unit 10 (see FIG. 9).
  • the large-capacity data transfer operation includes an application unit 27, a divided data transmission processing unit 45, and a transmission control unit. Department 41 is involved.
  • the application unit 27 of the vehicle 20-1 transmits the large-capacity data 54 to the divided data transmission processing unit 45.
  • the transmission processing unit 45 requests the transmission management unit 41 to transmit the data 54 to the center device 10 via the vehicle wireless line transmission / reception unit 22. .
  • the transmission processing unit 45 determines the number of divisions “k” obtained by dividing the data length of the data 54 by the predetermined fixed length, and according to the priority shown in the table 61, the radio line failure. Select only "k" vehicles that do not have the problem.
  • the transmission processing unit 45 unconditionally sets the own vehicle to the priority “1”, so that if the own vehicle does not have a wireless line failure, at least via the wireless line instead of the wireless LAN 28 One divided data can be transmitted.
  • the selected vehicle code is sequentially added to the “transmission vehicle code” of each message 55 according to the priority, and, for example, different frequencies are set to the “transmission line”.
  • the transmission management unit 41 refers to the “transmission vehicle code” of the message 55, and if the vehicle code is the own vehicle code, transmits the message 55 to the center device 10 via the vehicle wireless line transmitting / receiving unit 22 and the wireless line.
  • the transmission management unit 41 transmits the message 55 to the vehicle of the “transmission vehicle code” via the wireless LAN transmission / reception unit 23 and the wireless LAN 28.
  • the wireless LAN transmission / reception unit 23 that has received the message 55-2 addressed to the own vehicle has designated the message 55-2 via the vehicle wireless line transmission / reception unit 22 as “transmission line (frequency)”. Transfer to the center device 10 in frequency.
  • the radio line transmitting and receiving unit 12 manages received messages 55-l to 55_k (only the message 55-2 is illustrated in FIG. 2B).
  • the data is sent to the divided data assembling section 32 via the section 31.
  • the divided data assembling section 32 transmits the restored data 54 to the application section 33.
  • the large-capacity data 54 transmitted from the application unit 27 of the vehicle 20 is received by the application unit 33 of the center device 10.
  • the data transfer time of the wireless LAN 28 which is faster than the wireless line, is ignored, the data transfer time can be reduced compared to the conventional transfer time by dividing and transferring to the "k" channel wireless line. It is reduced by a factor of k.
  • the vehicle 20 in which a radio line failure has occurred is transmitted to the center device 10 by dividing the large-capacity data of the own vehicle via the wireless LAN 28 to each vehicle 20 in which the radio line failure has not occurred. It becomes possible to send.
  • each mobile communication device (vehicle) 1 transmits and receives management information such as fault management information and location management information via the second wireless line.
  • management information such as fault management information and location management information
  • the received mobile communication device is configured to update the management information to the latest one, the management information can be transmitted and received at high speed between the mobile communication devices without passing through the center device. .
  • management information collected by transmission and reception between mobile communication devices is collectively transferred to the center device, so that the management information can be transmitted from the mobile communication device to the center device at a high speed. Become.
  • the large-capacity management information transmitted between the center device and a predetermined mobile communication device is divided into a plurality of data, and each data is transmitted and received via a different radio line and a second radio line, Thus, high-capacity management information can be transmitted at high speed.
  • the center device or each mobile communication device manages the failure status of all the radio lines, and manages the management information between the center device in which the radio line has failed and each of the mobile communication devices by the normal radio line and the second radio communication device.
  • the latest management information is sent and received between the center device and the mobile communication device where the wireless line has failed because the wireless line is transferred as a detour. It is possible to trust (

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un système de communication mobile, qui se caractérise en ce que : des informations applicables constituent des informations de commande de défaillance ; et en ce qu'une unité de commande applicable reconnaît les dispositifs de communication mobile possédant des circuits radio normaux, à partir des informations de commande de défaillance, et distribue les données par l'intermédiaire des circuits radio des dispositifs de communications normaux, dont le dispositif comportant des circuits radio sans défaillance, de sorte qu'elles soient transmises à un dispositif central applicable.
PCT/JP2000/007452 2000-10-25 2000-10-25 Dispositif et systeme de communication mobile WO2002035868A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2000/007452 WO2002035868A1 (fr) 2000-10-25 2000-10-25 Dispositif et systeme de communication mobile
JP2002538702A JPWO2002035868A1 (ja) 2000-10-25 2000-10-25 移動通信装置及びシステム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/007452 WO2002035868A1 (fr) 2000-10-25 2000-10-25 Dispositif et systeme de communication mobile

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WO2002035868A1 true WO2002035868A1 (fr) 2002-05-02

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JP (1) JPWO2002035868A1 (fr)
WO (1) WO2002035868A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007150460A (ja) * 2005-11-24 2007-06-14 Oki Electric Ind Co Ltd 移動体位置表示システム、移動局装置及び基地局装置
JP2007251657A (ja) * 2006-03-16 2007-09-27 Fujitsu Ltd 無線通信装置制御プログラム、無線通信装置、無線通信装置制御方法
JP2013012154A (ja) * 2011-06-30 2013-01-17 Toshiba Corp 情報提供システム、情報提供方法及び情報分割処理プログラム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0851703A2 (fr) * 1996-12-27 1998-07-01 At&T Wireless Services, Inc. Procédé et appareil pour notifier à une station dans un premier réseau d'une demande de communication provenant d'un deuxième réseau
JPH11205856A (ja) * 1998-01-09 1999-07-30 Mitsubishi Heavy Ind Ltd 移動体通信システム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0851703A2 (fr) * 1996-12-27 1998-07-01 At&T Wireless Services, Inc. Procédé et appareil pour notifier à une station dans un premier réseau d'une demande de communication provenant d'un deuxième réseau
JPH11205856A (ja) * 1998-01-09 1999-07-30 Mitsubishi Heavy Ind Ltd 移動体通信システム

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007150460A (ja) * 2005-11-24 2007-06-14 Oki Electric Ind Co Ltd 移動体位置表示システム、移動局装置及び基地局装置
JP4736747B2 (ja) * 2005-11-24 2011-07-27 沖電気工業株式会社 移動体位置表示システム、移動局装置
JP2007251657A (ja) * 2006-03-16 2007-09-27 Fujitsu Ltd 無線通信装置制御プログラム、無線通信装置、無線通信装置制御方法
JP2013012154A (ja) * 2011-06-30 2013-01-17 Toshiba Corp 情報提供システム、情報提供方法及び情報分割処理プログラム

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