WO2018061587A1 - Radio communiation system and positional information acquisition method for mobile station - Google Patents

Radio communiation system and positional information acquisition method for mobile station Download PDF

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Publication number
WO2018061587A1
WO2018061587A1 PCT/JP2017/031094 JP2017031094W WO2018061587A1 WO 2018061587 A1 WO2018061587 A1 WO 2018061587A1 JP 2017031094 W JP2017031094 W JP 2017031094W WO 2018061587 A1 WO2018061587 A1 WO 2018061587A1
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Prior art keywords
position information
station
mobile station
timer
base station
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PCT/JP2017/031094
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French (fr)
Japanese (ja)
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誠 渡部
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株式会社日立国際電気
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Priority to JP2018542018A priority Critical patent/JP6697083B2/en
Publication of WO2018061587A1 publication Critical patent/WO2018061587A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present invention relates to a method for acquiring location information of a mobile station in a wireless communication system.
  • the disaster prevention radio system is roughly configured by control station equipment having a control station and a base station and terminal station equipment having a terminal station such as a mobile station and a fixed terminal station.
  • Patent Document 1 discloses that the control station has an area for setting a special group communication number in the call signal, and the terminal station device includes the local station group communication number or the local station number in the call signal.
  • a wireless communication system is disclosed in which an incoming call is received when a call is received.
  • the present invention has been made in view of the conventional circumstances as described above, solves the problem of not being able to acquire the location information of the mobile station in the disaster prevention radio system, and acquires the location information of the mobile station using the disaster prevention radio.
  • the purpose is to be able to.
  • a wireless communication system including a control station, a base station, and a mobile station is operated as follows.
  • the control station sends a location information acquisition request to the mobile station, the base station transfers the location information acquisition request received from the control station to the mobile station using the control channel, and the mobile station receives it from the base station.
  • the location information of the local station is obtained and transmitted to the base station using the control channel, and the base station transfers the location information received from the mobile station to the control station.
  • the control station has a first timer for measuring an interval for transmitting a position information acquisition request, and transmits a position information acquisition request when the first timer expires. 1 timer is restarted, and the mobile station has a second timer that measures the interval at which the position information is acquired and transmitted. If the second timer is not started, the mobile station issues a position information acquisition request. In response to the reception, the position information is acquired and transmitted, and the second timer is started. When the second timer is started, the position information acquisition request is received before the second timer expires. In this case, in response to the expiration of the second timer, the position information may be acquired and transmitted and the second timer may be restarted.
  • the control station sequentially issues a request for acquiring position information including designation of an interval for acquiring and transmitting the position information to the plurality of mobile stations via the base station.
  • the mobile station starts the second timer that measures the interval specified in the position information acquisition request received from the base station, and receives the position information acquisition request before the second timer expires.
  • the position information may be acquired and transmitted, and the second timer may be restarted.
  • the mobile station transmits the acquired position information using a communication channel when communicating by individual communication, and holds the acquired position information when communicating by group communication.
  • the position information is newly acquired and transmitted together with the held position information, and when the transmission of the position information fails,
  • the acquired position information may be stored, and the position information may be newly acquired and transmitted together with the stored position information at the next transmission timing.
  • the present invention it is possible to suppress communication congestion even with a low-speed disaster prevention radio, and to acquire location information of a mobile station without hindering operation.
  • FIG. 1 It is a figure which shows the system configuration example of the disaster prevention radio
  • FIG. 1 shows a system configuration example of a disaster prevention radio system which is an example of a radio communication system.
  • the disaster prevention radio system of the present example is roughly composed of a control station equipment having a control station 101 and a base station 102 (102A, 102B), a mobile station 103 (103A, 103B), and a fixed terminal station 104 (104A, 104B).
  • Terminal station equipment having a terminal station.
  • two each of the base station 102, the mobile station 103, and the fixed terminal station 104 are shown, but the number of these is arbitrary.
  • the control station 101 is a station installed in a prefectural or municipal organization, and mainly performs communication control.
  • the base station 102 is installed at a plurality of bases such as a station different from the control station 101, is connected to the control station 101 using a wired line, and is a terminal station (within its own zone (wireless communication area)) ( Wireless communication with the mobile station 103 or the fixed terminal station 104) or wireless relay between the terminal station and the terminal station is performed.
  • the mobile station 103 is a terminal station that mainly moves on land, and performs wireless communication with the base station 102 and other terminal stations.
  • the mobile station 103 is mounted on a moving body such as a vehicle and moves, or is carried by a person.
  • the fixed station terminal 104 is a terminal station that is fixedly installed in a branch office or disaster prevention related organization in a prefecture or municipality, and performs wireless communication with the base station 102 or other terminal stations in the same manner as the mobile station 103. .
  • Each terminal station can also communicate with the control station 101 via the base station 102.
  • the operation of the terminal station will be described by taking the mobile station 103 as an example, but it goes without saying that the same applies to the fixed station terminal 104.
  • FIG. 2 shows a configuration example of the control station 101 in the disaster prevention radio system of FIG.
  • the control station 101 includes a control station control device 201 that controls call management and communication control, an operation management device 202 that manages system information and communication information of the disaster prevention wireless system, and instructions for communication control and the like. And a map display device 204 that displays position information of the mobile station 103 on a map.
  • FIG. 3 shows an example of a mobile station location information acquisition sequence.
  • Mobile station 103A first mobile station in the zone of base station 102A (first base station) transmits a location registration request addressed to control station control apparatus 201 to first base station 102A (step 301).
  • the mobile station 103B second mobile station existing in the zone of the base station 102B (second base station) transmits a location registration request addressed to the control station controller 201 to the second base station 102B (step 303).
  • the base stations 102A and 102B transfer the received location registration request to the control station controller 201 (steps 302 and 304).
  • the control station control apparatus 201 registers the location information (linkage between the mobile station and the base station) of the mobile stations 103A and 103B based on the location registration request received via the base stations 102A and 102B (step 305). . That is, the mobile station 103A is registered under the base station 102A, and the mobile station 103B is registered under the base station 102B. Further, the control station control device 201 updates the target base station information (step 306). In this example, the mobile stations 103A and 103B are both registered in the group 00, and the target base station information of the group 00 is assumed to be base stations 102A and 102B (first base station and second base station).
  • the map display device 204 selects PCH (Paging Channel) as the control type, selects the group 00 as the target station, sets T1 seconds as the transmission interval, sets T2 seconds as the notification interval, and is subject to forced acquisition.
  • a position information acquisition request in which “none” is set is created and transmitted to the control station control apparatus 201 (steps 307 to 309).
  • the position information acquisition request parameters (control type, target station, transmission interval, notification interval) are set in advance in a configuration file or the like, and are automatically transmitted when the map display device 204 is activated. It is also possible for 204 users to set an arbitrary value for transmission.
  • the control station control apparatus 201 sequentially transfers position information acquisition requests to the base stations 102A and 102B, which are target base stations of the group 00, and starts a timer for measuring the transmission interval T1 (hereinafter referred to as “T1 timer”). (Steps 310, 311, 313).
  • the position information acquisition request is transferred using licensee specific information defined in ARIB STD-T79.
  • the base stations 102A and 102B transfer the received licensee specific information (location information acquisition request) to the mobile stations 103A and 103B using the control channel PCH (steps 312 and 314).
  • the mobile stations 103A and 103B When the mobile stations 103A and 103B receive the licensee specific information (location information acquisition request), the mobile stations 103A and 103B acquire the location information from the GPS module and provide the licensee specific information (location information notification) in which the location information and the location information acquisition time are set.
  • a timer for measuring the notification interval T2 (hereinafter referred to as “T2 timer”) is started using the PCH of the control channel and transmitted to the base stations 102A and 102B (steps 315, 316, 317, and 320).
  • the base stations 102A and 102B transfer the received licensee specific information (location information notification) to the control station control device 201, and the control station control device 201 transfers the information to the map display device 204 (steps 318, 319, 321). 322).
  • the map display device 204 displays the positions of the mobile stations 103A and 103B on the map based on the position information notification.
  • the control station control apparatus 201 Whenever the T1 timer expires, the control station control apparatus 201 confirms the target base station information of the group 00, restarts the T1 timer, and sequentially transmits a position information acquisition request to the base stations 102A and 102B (step 323). ⁇ 331). When the location information of the base stations 102A and 102B is changed, the transmission destination base station is changed accordingly.
  • the mobile stations 103A and 103B When the mobile stations 103A and 103B receive a position information acquisition request similar to the previously notified condition (not subject to forced acquisition) when the T2 timer expires, the mobile stations 103A and 103B acquire position information from the GPS module, The licensee specific information (position information notification) in which the information and the position information acquisition time are set is transmitted to the base stations 102A and 102B, and the T2 timer is restarted (steps 332 and 333).
  • the base stations 102A and 102B transfer the licensee specific information (position information notification) received from the mobile stations 103A and 103B to the control station control device 201, and the control station control device 201 transfers the information to the map display device 204 (step). 334-339). Thereafter, the control station control device 201 sequentially transmits a position information acquisition request every time the T1 timer expires, and the mobile stations 103A and 103B repeat position information notification every time the T2 timer expires (steps 340 to 349). .
  • FIG. 4 shows an example of a mobile station position information acquisition (forced acquisition) sequence.
  • the map display device 204 acquires position information in more detail (with a shorter interval) than the notification interval T2 seconds specified in the mobile station position information acquisition sequence in FIG.
  • a position information acquisition request to which a timer value of T3 ( ⁇ T2) seconds is added as an interval is transmitted to the control station controller 201 (steps 401 and 402).
  • the map display device 204 can set a plurality of mobile stations to be forcibly acquired, only the mobile station 103A (first mobile station) is shown in FIG.
  • the control station control device 201 confirms the target base station information of the group 00, and sequentially transmits a location information acquisition request to the base stations 102A and 102B (steps 403 to 407). In this position information acquisition request, a mobile station to be forcibly acquired and a timer value of notification interval T3 seconds are set.
  • the mobile station 103A When the mobile station 103A receives the licensee-specific information (position information acquisition request), the mobile station 103A stops the T2 timer because it differs from the previously notified condition (not subject to forced acquisition) (step 408). Further, a timer (hereinafter referred to as “a”) that acquires position information from the GPS module, transmits the position information and licensee specific information (position information notification) in which the position information acquisition time is set to the base station 102A, and measures the notification interval T3. (T3 timer) is started (steps 409 and 410). The base station 102A transfers the licenser-specific information (position information notification) received from the mobile station 103A to the control station control device 201, and the control station control device 201 transfers it to the map display device 204 (steps 411 and 412). .
  • a a timer that acquires position information from the GPS module, transmits the position information and licensee specific information (position information notification) in which the position information acquisition time is set to the base station 102
  • the mobile station 103B when the mobile station 103B receives the licensee specific information (position information acquisition request), the mobile station 103B acquires the position information from the GPS module because it is the same as the previously notified condition (not subject to forced acquisition).
  • the licensee specific information (position information notification) in which the information acquisition time is set is transmitted to the base station 102B, and the T2 timer is restarted (step 413).
  • the base station 102B transfers the licenser-specific information (position information notification) received from the mobile station 103B to the control station control device 201, and the control station control device 201 transfers it to the map display device 204 (steps 414 and 415). .
  • the control station control device 201 sequentially transmits a position information acquisition request every time the T1 timer expires, the mobile station 103A transmits a position information notification every time the T3 timer expires, and the mobile station 103B Whenever the timer expires, a position information notification is transmitted (steps 416 to 442).
  • a position information acquisition request in which the mobile station 103A is excluded from the designation of the mobile station to be forcibly acquired in steps 401 and 402. Is possible.
  • FIG. 5 shows an example of a mobile station position information acquisition stop sequence.
  • the map display device 204 transmits a position information acquisition stop request to the control station control device 201 (step 501).
  • the control station control device 201 stops the T1 timer (step 502).
  • the location information acquisition request is not transmitted from the control station control device 201. If the mobile stations 103A and 103B have not received a position information acquisition request similar to the previously notified condition when the T2 timer expires, the mobile stations 103A and 103B stop the T2 timer (steps 503 and 504).
  • the mobile stations 103A and 103B cannot receive the location information acquisition request before the T2 timer expires, so the T2 timer expires. Also, no location information notification is performed.
  • FIG. 6 shows an example of the mobile station location information notification failure sequence.
  • the mobile station 103A transmits a location information notification to the base station 102A. If the location information notification fails due to the state of the radio line or the base stations 102A and 102B, the mobile station 103A The position information and the position information acquisition time are stored in the memory (steps 601 and 602).
  • the mobile station 103A acquires the position information from the GPS module, and sets the position information and the position information acquisition time, and the position information and the position information acquisition time in which the transmission has failed, (Location information notification) is transmitted to the base station 102A (step 603).
  • FIG. 7 shows an example of a mobile station position information acquisition (during mobile station communication) sequence.
  • the mobile station 103A transmits a position information notification to the base station 102A using the PCH of the control channel, but transmits a position information notification using the PCH of the control channel when transitioning to communication. It becomes impossible. Therefore, when the mobile station 103A shifts to communication (individual communication), the mobile station 103A transmits a location information notification to the base station 102A using the communication channel FACCH (high-speed associated control channel) (step 701).
  • FACCH high-speed associated control channel
  • the mobile station 103B when the mobile station 103B shifts to communication (group communication), the mobile station 103B cannot transmit the position information notification unless it acquires the transmission right and enters the transmission state.
  • the position information acquisition time is stored in the memory (step S707). Then, the mobile station 103B acquires the transmission right, not when the T2 timer expires, and acquires the position information from the GPS module when the state is shifted to the transmission state, and acquires the position information, the position information acquisition time, and the transmission.
  • the licensee specific information (position information notification) in which the position information that could not be set and the position information acquisition time is set is transmitted to the base station 102B (steps 708 and 709). Thereafter, when the mobile stations 103A and 103B shift from the communication state to the idle state, each time the T2 timer expires, the mobile stations 103A and 103B transmit a location information notification by PCH (step 712).
  • the disaster prevention radio system of this example includes the control station 101, the base station 102, and the mobile station 103, and the control station 101 transmits a request for acquiring the location information of the mobile station 103,
  • the base station 102 transfers the position information acquisition request received from the control station 101 to the mobile station 103 using the PCH of the control channel, and the mobile station 103 is based on the position information acquisition request received from the base station 102.
  • the position information of the own station is acquired and transmitted to the base station 102 using the PCH of the control channel, and the base station 102 transfers the position information received from the mobile station 103 to the control station 101.
  • the communication between the base station 102 and the mobile station 103 when acquiring the location information of the mobile station 103 is performed using the PCH, thereby suppressing communication congestion even in low-speed disaster prevention radio, and hindering operation.
  • the position information of the mobile station 103 can be acquired without exerting any influence.
  • the control station 101 has a map display device 204 that displays the received location information of the mobile station 103 on a map. Therefore, since the location information of the mobile station 103 can be confirmed on a map, for example, the location of the mobile station can be grasped at a glance at the time of a disaster, and staff can be dispatched to the disaster site and evacuation guidance can be performed quickly. It becomes like this.
  • the control station 101 transmits a request for acquiring position information including the designation of the base station 102, and the base station 102 receives the request for acquiring position information including the designation of the own station.
  • the position information acquisition request is transferred to the mobile station 103 in the wireless communication area of the local station. Therefore, it is possible to collect location information by narrowing down the area to be collected (base station 102).
  • the control station 101 has a T1 timer for measuring an interval for transmitting a position information acquisition request, and transmits a position information acquisition request when the T1 timer expires. Start again.
  • the mobile station 103 has a T2 timer that measures the interval at which the position information is acquired and transmitted. When the T2 timer is not activated, the mobile station 103 receives the position information acquisition request in response to receiving the position information acquisition request. In the state where the T2 timer is activated and the T2 timer is activated, the position information acquisition request is received before the T2 timer expires. Acquire and transmit information and restart the T2 timer.
  • the measurement interval of the T1 timer may be preset in the control station 101, for example, or may be specified by the user of the map display device 204.
  • the measurement interval of the T2 timer may be set in advance in the mobile station 103 or may be specified by the user of the map display device 204, for example.
  • the control station 101 when there are a plurality of transmission destination mobile stations 103, the control station 101 sends a request for acquiring location information including the notification interval T2 via the base station 102 to the plurality of mobile stations 103. Sequentially.
  • the mobile station 103 activates a T2 timer that measures the notification interval T2 specified in the position information acquisition request received from the base station 102, and receives the position information acquisition request before the T2 timer expires
  • the position information is acquired and transmitted, and the T2 timer is restarted. Therefore, transmission of position information from each mobile station 103 is sequentially performed, so that communication congestion can be suppressed.
  • the control station 101 transmits a request for acquiring position information including an interval shorter than the measurement interval of the T2 timer and the designation of the mobile station, and the mobile station 103 expires the T2 timer.
  • the position information is acquired and transmitted without waiting for the expiration of the T2 timer, and the T2 timer is stopped to A T3 timer that measures a short interval is started, and thereafter, position information is acquired and transmitted according to the T3 timer. Therefore, real-time position information can be acquired by designating only the necessary mobile station 103 while minimizing the hindrance to operation.
  • the measurement interval of the T3 timer and the designation of the mobile station 103 to which this is applied are set by the user of the map display device 204, for example.
  • the control station 101 stops the T1 timer based on an instruction from the map display device 204, and the mobile station 103 does not receive the location information until the T2 timer (or T3 timer) expires.
  • the T2 timer or T3 timer
  • the mobile station 103 automatically stops the position information collecting operation, so that the control station 101 stops the position information collecting operation. There is no need to transmit an instruction to the mobile station 103. For this reason, the operation can be continued so as not to generate extra traffic after the acquisition of position information is stopped.
  • the mobile station 103 transmits the acquired position information using the FACCH of the communication channel when performing communication by individual communication. Therefore, even when the mobile station 103 shifts to individual communication, it is possible to continue collecting location information using the FACCH.
  • the mobile station 103 retains the acquired position information in the memory during communication by group communication, acquires the transmission right, and shifts to the transmission state. In response, new position information is acquired and transmitted together with the position information held in the memory. Therefore, even when the mobile station 103 shifts to group communication, the position information can be transmitted at the timing when the transmission state is entered.
  • the mobile station 103 when the mobile station 103 fails to transmit the position information, the mobile station 103 stores the acquired position information in the memory, and next transmission timing (when the T2 timer expires). Then, the position information is newly acquired and transmitted together with the position information held in the memory. Therefore, even when the mobile station 103 cannot transmit the position information due to a temporary communication failure (such as an abnormality in the wireless channel state or the base station state), the position information can be transmitted after the communication is restored.
  • a temporary communication failure such as an abnormality in the wireless channel state or the base station state
  • the mobile station 103 transmits the acquisition time of the position information together with the position information. Therefore, the control station 101 can also specify the transition (temporal change) of the position of the mobile station 103.
  • the map display device 204 may display the transition of the position of the mobile station 103 on the map.
  • the configurations of the system and apparatus according to the present invention are not necessarily limited to those described above, and various configurations may be used.
  • the present invention can also be provided, for example, as a method or method for executing the processing according to the present invention, a program for realizing such a method or method, or a storage medium for storing the program.
  • the present invention can be used in various types of wireless communication systems including a control station, a base station, and a mobile station.
  • Control station 102 (102A, 102B): Base station 103 (103A, 103B): Mobile station 104 (104A, 104B): Fixed station terminal 201: Control station control device, 202: Operation management device, 203: Control table, 204: Map display device

Abstract

[Problem] To solve a problem that positional information of a mobile station cannot be acquired in a disaster prevention radio system, thereby making it possible to acquire the positional information of the mobile station using disaster prevention radio. [Solution] A radio communication system is provided with a control station 101, a base station 102, and a mobile station 103, wherein the control station 101 transmits an acquisition request for positional information of the mobile station 103, the base station 102 transfers, to the mobile station 103, the acquisition request for the positional information received from the control station 101 using a control channel, the mobile station 103 acquires positional information thereof on the basis of the acquisition request for the positional information received from the base station 102, and transmits the acquired positional information to the base station 102 using the control channel, and the base station 102 transfers the positional information received from the mobile station 103 to the control station 101.

Description

無線通信システム及び移動局の位置情報取得方法Wireless communication system and mobile station location information acquisition method
　本発明は、無線通信システムにおける移動局の位置情報取得方法に関する。 The present invention relates to a method for acquiring location information of a mobile station in a wireless communication system.
　従来、災害等の発生時に緊急的な無線通信を行えるようにした防災無線システムが実用に供されている。防災無線システムは、概略的に、統制局や基地局を有する統制局設備と、移動局や固定端末局といった端末局を有する端末局設備とにより構成されている。 Conventionally, disaster prevention wireless systems that enable emergency wireless communication in the event of a disaster have been put into practical use. The disaster prevention radio system is roughly configured by control station equipment having a control station and a base station and terminal station equipment having a terminal station such as a mobile station and a fixed terminal station.
　このような防災無線システムに関し、特許文献１には、統制局は呼出信号に特別グループ通信番号を設定する領域を有し、端末局装置は呼出信号に自局グループ通信番号又は自局番号が含まれている場合に着信を行うようにした無線通信システムが開示されている。 With regard to such a disaster prevention radio system, Patent Document 1 discloses that the control station has an area for setting a special group communication number in the call signal, and the terminal station device includes the local station group communication number or the local station number in the call signal. A wireless communication system is disclosed in which an incoming call is received when a call is received.
特開２０１６－６３４０８号公報JP 2016-63408 A
　従来の防災無線システムは、統制局設備から遠隔地にある移動局の位置情報を収集することができなかった。そのため、災害時に職員（に所持される移動局）の正確な位置を把握することが困難であり、災害発生現場への職員の迅速な派遣、避難誘導などを行うことが難しかった。
　移動局にＧＰＳ（Global Positioning System）ユニットを搭載し、移動局の位置情報を統制局設備に通知させて収集すればこの問題は解決するが、防災無線の伝送速度は低速であり、数百台ある移動局の位置情報を収集しながら運用するには、通信の輻輳などが発生することが懸念されていた。 Conventional disaster prevention radio systems have not been able to collect location information of mobile stations located remotely from control station equipment. For this reason, it is difficult to grasp the exact location of the staff (mobile station held by them) at the time of a disaster, and it is difficult to dispatch staff to the disaster occurrence site and guide evacuation.
If the mobile station is equipped with a GPS (Global Positioning System) unit and the location information of the mobile station is sent to the control station equipment and collected, this problem can be solved, but the transmission speed of disaster prevention radio is low, and several hundred units In order to operate while collecting location information of a certain mobile station, there has been a concern that communication congestion may occur.
　本発明は、上記のような従来の事情に鑑みて為されたものであり、防災無線システムにおいて移動局の位置情報を取得できない問題を解決し、防災無線を用いて移動局の位置情報を取得できるようにすることを目的とする。 The present invention has been made in view of the conventional circumstances as described above, solves the problem of not being able to acquire the location information of the mobile station in the disaster prevention radio system, and acquires the location information of the mobile station using the disaster prevention radio. The purpose is to be able to.
　本発明は、上記目的を達成するために、統制局と、基地局と、移動局とを備えた無線通信システムを以下のように動作させるようにした。
　統制局が、移動局に対する位置情報の取得要求を送信し、基地局が、統制局から受信した位置情報の取得要求を制御チャネルを用いて移動局に転送し、移動局が、基地局から受信した位置情報の取得要求に基づいて、自局の位置情報を取得して制御チャネルを用いて基地局に送信し、基地局が、移動局から受信した位置情報を統制局に転送する。 In order to achieve the above object, according to the present invention, a wireless communication system including a control station, a base station, and a mobile station is operated as follows.
The control station sends a location information acquisition request to the mobile station, the base station transfers the location information acquisition request received from the control station to the mobile station using the control channel, and the mobile station receives it from the base station. Based on the obtained location information acquisition request, the location information of the local station is obtained and transmitted to the base station using the control channel, and the base station transfers the location information received from the mobile station to the control station.
　ここで、一構成例として、統制局は、位置情報の取得要求を送信する間隔を計測する第１のタイマを有し、第１のタイマの満了時に、位置情報の取得要求を送信すると共に第１のタイマを起動し直し、移動局は、位置情報を取得して送信する間隔を計測する第２のタイマを有し、第２のタイマを起動していない状態では、位置情報の取得要求を受信したことに応じて、位置情報を取得して送信すると共に第２のタイマを起動し、第２のタイマを起動した状態では、第２のタイマが満了するまでに位置情報の取得要求を受信した場合に、第２のタイマが満了したことに応じて、位置情報を取得して送信すると共に第２のタイマを起動し直すようにしてもよい。 Here, as one configuration example, the control station has a first timer for measuring an interval for transmitting a position information acquisition request, and transmits a position information acquisition request when the first timer expires. 1 timer is restarted, and the mobile station has a second timer that measures the interval at which the position information is acquired and transmitted. If the second timer is not started, the mobile station issues a position information acquisition request. In response to the reception, the position information is acquired and transmitted, and the second timer is started. When the second timer is started, the position information acquisition request is received before the second timer expires. In this case, in response to the expiration of the second timer, the position information may be acquired and transmitted and the second timer may be restarted.
　また、一構成例として、統制局は、移動局が複数ある場合に、位置情報を取得して送信する間隔の指定を含む位置情報の取得要求を、基地局を介して複数の移動局に順次送信し、移動局は、基地局から受信した位置情報の取得要求で指定された間隔を計測する第２のタイマを起動し、第２のタイマが満了するまでに位置情報の取得要求を受信した場合に、第２のタイマが満了したことに応じて、位置情報を取得して送信すると共に第２のタイマを起動し直すようにしてもよい。 Further, as one configuration example, when there are a plurality of mobile stations, the control station sequentially issues a request for acquiring position information including designation of an interval for acquiring and transmitting the position information to the plurality of mobile stations via the base station. The mobile station starts the second timer that measures the interval specified in the position information acquisition request received from the base station, and receives the position information acquisition request before the second timer expires. In this case, in response to the expiration of the second timer, the position information may be acquired and transmitted, and the second timer may be restarted.
　また、一構成例として、移動局は、個別通信による通信中の場合には、取得した位置情報を通信チャネルを用いて送信し、グループ通信による通信中の場合には、取得した位置情報を保持しておき、送信権を取得して送信状態に移行したことに応じて、新たに位置情報を取得して前記保持している位置情報と共に送信し、位置情報の送信に失敗した場合には、取得した位置情報を保持しておき、次回の送信タイミングで、新たに位置情報を取得して前記保持している位置情報と共に送信するようにしてもよい。 As one configuration example, the mobile station transmits the acquired position information using a communication channel when communicating by individual communication, and holds the acquired position information when communicating by group communication. In addition, in response to acquiring the transmission right and shifting to the transmission state, the position information is newly acquired and transmitted together with the held position information, and when the transmission of the position information fails, The acquired position information may be stored, and the position information may be newly acquired and transmitted together with the stored position information at the next transmission timing.
　本発明によれば、低速な防災無線でも通信の輻輳を抑え、運用に支障を及ぼすことなく移動局の位置情報を取得できるようになる。 According to the present invention, it is possible to suppress communication congestion even with a low-speed disaster prevention radio, and to acquire location information of a mobile station without hindering operation.
本発明の一実施形態に係る防災無線システムのシステム構成例を示す図である。It is a figure which shows the system configuration example of the disaster prevention radio | wireless system which concerns on one Embodiment of this invention. 図１の防災無線システムにおける統制局の構成例を示す図である。It is a figure which shows the structural example of the control station in the disaster prevention radio | wireless system of FIG. 移動局位置情報取得シーケンスの例を示す図である。It is a figure which shows the example of a mobile station location information acquisition sequence. 移動局位置情報取得シーケンスの例を示す図である。It is a figure which shows the example of a mobile station location information acquisition sequence. 移動局位置情報取得（強制取得）シーケンスの例を示す図である。It is a figure which shows the example of a mobile station position information acquisition (forced acquisition) sequence. 移動局位置情報取得（強制取得）シーケンスの例を示す図である。It is a figure which shows the example of a mobile station position information acquisition (forced acquisition) sequence. 移動局位置情報取得停止シーケンスの例を示す図である。It is a figure which shows the example of a mobile station position information acquisition stop sequence. 移動局位置情報通知失敗シーケンスの例を示す図である。It is a figure which shows the example of a mobile station location information notification failure sequence. 移動局位置情報取得（移動局通信中）シーケンスの例を示す図である。It is a figure which shows the example of a mobile station positional information acquisition (during mobile station communication) sequence.
　本発明に係る無線通信システムについて、図面を参照して説明する。
　図１には、無線通信システムの一例である防災無線システムのシステム構成例を示してある。
　本例の防災無線システムは、概略的に、統制局１０１や基地局１０２（１０２Ａ，１０２Ｂ）を有する統制局設備と、移動局１０３（１０３Ａ，１０３Ｂ）や固定端末局１０４（１０４Ａ，１０４Ｂ）といった端末局を有する端末局設備とにより構成されている。本例では、基地局１０２、移動局１０３、固定端末局１０４をそれぞれ２台ずつ示しているが、これらの台数は任意である。 A radio communication system according to the present invention will be described with reference to the drawings.
FIG. 1 shows a system configuration example of a disaster prevention radio system which is an example of a radio communication system.
The disaster prevention radio system of the present example is roughly composed of a control station equipment having a control station 101 and a base station 102 (102A, 102B), a mobile station 103 (103A, 103B), and a fixed terminal station 104 (104A, 104B). Terminal station equipment having a terminal station. In this example, two each of the base station 102, the mobile station 103, and the fixed terminal station 104 are shown, but the number of these is arbitrary.
　統制局１０１は、都道府県または市町村の機関などに設置される局であり、主に通信統制を行う。
　基地局１０２は、統制局１０１とは別の局舎などの複数の拠点に設置され、有線回線を用いて統制局１０１と接続し、自局のゾーン（無線通信エリア）内に存する端末局（移動局１０３や固定端末局１０４）との無線通信、或いは端末局－端末局の無線中継を行う。 The control station 101 is a station installed in a prefectural or municipal organization, and mainly performs communication control.
The base station 102 is installed at a plurality of bases such as a station different from the control station 101, is connected to the control station 101 using a wired line, and is a terminal station (within its own zone (wireless communication area)) ( Wireless communication with the mobile station 103 or the fixed terminal station 104) or wireless relay between the terminal station and the terminal station is performed.
　移動局１０３は、主に陸上を移動する端末局であり、基地局１０２や他の端末局との無線通信を行う。移動局１０３は、車両等の移動体に搭載されて移動し、または、人に所持されて移動する。
　固定局端末１０４は、県又は市町村の出先機関及び防災関係機関などに固定して設置される端末局であり、移動局１０３と同様に、基地局１０２や他の端末局との無線通信を行う。
　また、各端末局は、基地局１０２を介して統制局１０１と通信することもできる。
　以下では、移動局１０３を例に挙げて端末局の動作を説明するが、固定局端末１０４においても同様であることは言うまでもない。 The mobile station 103 is a terminal station that mainly moves on land, and performs wireless communication with the base station 102 and other terminal stations. The mobile station 103 is mounted on a moving body such as a vehicle and moves, or is carried by a person.
The fixed station terminal 104 is a terminal station that is fixedly installed in a branch office or disaster prevention related organization in a prefecture or municipality, and performs wireless communication with the base station 102 or other terminal stations in the same manner as the mobile station 103. .
Each terminal station can also communicate with the control station 101 via the base station 102.
Hereinafter, the operation of the terminal station will be described by taking the mobile station 103 as an example, but it goes without saying that the same applies to the fixed station terminal 104.
　図２には、図１の防災無線システムにおける統制局１０１の構成例を示してある。
　本例の統制局１０１は、呼管理、通信統制等の制御を行う統制局制御装置２０１と、防災無線システムのシステム情報、通信情報等の管理を行う運用管理装置２０２と、通信統制等の指示を行う統制台２０３と、移動局１０３の位置情報を地図上に表示する地図表示装置２０４とを備える。 FIG. 2 shows a configuration example of the control station 101 in the disaster prevention radio system of FIG.
In this example, the control station 101 includes a control station control device 201 that controls call management and communication control, an operation management device 202 that manages system information and communication information of the disaster prevention wireless system, and instructions for communication control and the like. And a map display device 204 that displays position information of the mobile station 103 on a map.
　以下、本例の防災無線システムによる移動局の位置情報の取得方法について説明する。
　図３には、移動局位置情報取得シーケンスの例を示してある。
　基地局１０２Ａ（第１の基地局）のゾーンに存する移動局１０３Ａ（第１の移動局）は、統制局制御装置２０１宛の位置登録要求を第１の基地局１０２Ａへ送信する（ステップ３０１）。また、基地局１０２Ｂ（第２の基地局）のゾーンに存する移動局１０３Ｂ（第２の移動局）は、統制局制御装置２０１宛の位置登録要求を第２の基地局１０２Ｂへ送信する（ステップ３０３）。
　基地局１０２Ａ，１０２Ｂは、受信した位置登録要求を統制局制御装置２０１へ転送する（ステップ３０２，３０４）。 Hereinafter, the acquisition method of the positional information on the mobile station by the disaster prevention radio system of this example is demonstrated.
FIG. 3 shows an example of a mobile station location information acquisition sequence.
Mobile station 103A (first mobile station) in the zone of base station 102A (first base station) transmits a location registration request addressed to control station control apparatus 201 to first base station 102A (step 301). . Also, the mobile station 103B (second mobile station) existing in the zone of the base station 102B (second base station) transmits a location registration request addressed to the control station controller 201 to the second base station 102B (step 303).
The base stations 102A and 102B transfer the received location registration request to the control station controller 201 (steps 302 and 304).
　統制局制御装置２０１は、基地局１０２Ａ，１０２Ｂを経由して受信した位置登録要求に基づいて、移動局１０３Ａ，１０３Ｂの位置情報（移動局と基地局の紐付け）を登録する（ステップ３０５）。すなわち、基地局１０２Ａの配下に移動局１０３Ａを登録し、基地局１０２Ｂの配下に移動局１０３Ｂを登録する。また、統制局制御装置２０１は、対象基地局情報を更新する（ステップ３０６）。本例では、移動局１０３Ａ，１０３Ｂはいずれもグループ００に登録されており、グループ００の対象基地局情報を基地局１０２Ａ，１０２Ｂ（第１の基地局及び第２の基地局）とする。 The control station control apparatus 201 registers the location information (linkage between the mobile station and the base station) of the mobile stations 103A and 103B based on the location registration request received via the base stations 102A and 102B (step 305). . That is, the mobile station 103A is registered under the base station 102A, and the mobile station 103B is registered under the base station 102B. Further, the control station control device 201 updates the target base station information (step 306). In this example, the mobile stations 103A and 103B are both registered in the group 00, and the target base station information of the group 00 is assumed to be base stations 102A and 102B (first base station and second base station).
　地図表示装置２０４は、制御種別としてＰＣＨ（一斉呼出チャネル）を選択し、対象局としてグループ００を選択し、送信間隔としてＴ１秒を設定し、通知間隔としてＴ２秒を設定し、強制取得対象として「なし」を設定した位置情報取得要求を作成し、統制局制御装置２０１へ送信する（ステップ３０７～３０９）。位置情報取得要求のパラメータ（制御種別、対象局、送信間隔、通知間隔）は予めコンフィグファイル等で設定済みであり、地図表示装置２０４が起動したときに自動的に送信されるが、地図表示装置２０４のユーザが任意の値を設定して送信することも可能である。 The map display device 204 selects PCH (Paging Channel) as the control type, selects the group 00 as the target station, sets T1 seconds as the transmission interval, sets T2 seconds as the notification interval, and is subject to forced acquisition. A position information acquisition request in which “none” is set is created and transmitted to the control station control apparatus 201 (steps 307 to 309). The position information acquisition request parameters (control type, target station, transmission interval, notification interval) are set in advance in a configuration file or the like, and are automatically transmitted when the map display device 204 is activated. It is also possible for 204 users to set an arbitrary value for transmission.
　統制局制御装置２０１は、グループ００の対象基地局である基地局１０２Ａ，１０２Ｂへ位置情報取得要求を順次転送して、送信間隔Ｔ１を計測するタイマ（以下、「Ｔ１タイマ」という）を起動する（ステップ３１０，３１１，３１３）。位置情報取得要求は、ＡＲＩＢ　ＳＴＤ－Ｔ７９に規定されている免許人固有情報を利用して転送される。
　基地局１０２Ａ，１０２Ｂは、受信した免許人固有情報（位置情報取得要求）を制御チャネルのＰＣＨを用いて移動局１０３Ａ，１０３Ｂへ転送する（ステップ３１２，３１４）。 The control station control apparatus 201 sequentially transfers position information acquisition requests to the base stations 102A and 102B, which are target base stations of the group 00, and starts a timer for measuring the transmission interval T1 (hereinafter referred to as “T1 timer”). ( Steps 310, 311, 313). The position information acquisition request is transferred using licensee specific information defined in ARIB STD-T79.
The base stations 102A and 102B transfer the received licensee specific information (location information acquisition request) to the mobile stations 103A and 103B using the control channel PCH (steps 312 and 314).
　移動局１０３Ａ，１０３Ｂは、免許人固有情報（位置情報取得要求）を受信すると、ＧＰＳモジュールから位置情報を取得し、位置情報及び位置情報取得時間を設定した免許人固有情報（位置情報通知）を制御チャネルのＰＣＨを用いて基地局１０２Ａ，１０２Ｂへ送信して、通知間隔Ｔ２を計測するタイマ（以下、「Ｔ２タイマ」という）を起動する（ステップ３１５，３１６，３１７，３２０）。
　基地局１０２Ａ，１０２Ｂは、受信した免許人固有情報（位置情報通知）を統制局制御装置２０１へ転送し、統制局制御装置２０１は、地図表示装置２０４へ転送する（ステップ３１８，３１９，３２１，３２２）。地図表示装置２０４は、位置情報通知に基づいて、地図上に移動局１０３Ａ，１０３Ｂの位置を表示する。 When the mobile stations 103A and 103B receive the licensee specific information (location information acquisition request), the mobile stations 103A and 103B acquire the location information from the GPS module and provide the licensee specific information (location information notification) in which the location information and the location information acquisition time are set. A timer for measuring the notification interval T2 (hereinafter referred to as “T2 timer”) is started using the PCH of the control channel and transmitted to the base stations 102A and 102B ( steps 315, 316, 317, and 320).
The base stations 102A and 102B transfer the received licensee specific information (location information notification) to the control station control device 201, and the control station control device 201 transfers the information to the map display device 204 ( steps 318, 319, 321). 322). The map display device 204 displays the positions of the mobile stations 103A and 103B on the map based on the position information notification.
　統制局制御装置２０１は、Ｔ１タイマが満了する度に、グループ００の対象基地局情報を確認し、Ｔ１タイマを起動し直して位置情報取得要求を基地局１０２Ａ，１０２Ｂへ順次送信する（ステップ３２３～３３１）。基地局１０２Ａ，１０２Ｂの位置情報が変更された場合は、それに伴い、送信先の基地局を変更する。
　移動局１０３Ａ，１０３Ｂは、Ｔ２タイマの満了時に、前回通知した条件（強制取得対象ではない）と同様の位置情報取得要求を受信している場合には、ＧＰＳモジュールから位置情報を取得し、位置情報及び位置情報取得時間を設定した免許人固有情報（位置情報通知）を基地局１０２Ａ，１０２Ｂへ送信して、Ｔ２タイマを起動し直す（ステップ３３２，３３３）。 Whenever the T1 timer expires, the control station control apparatus 201 confirms the target base station information of the group 00, restarts the T1 timer, and sequentially transmits a position information acquisition request to the base stations 102A and 102B (step 323). ~ 331). When the location information of the base stations 102A and 102B is changed, the transmission destination base station is changed accordingly.
When the mobile stations 103A and 103B receive a position information acquisition request similar to the previously notified condition (not subject to forced acquisition) when the T2 timer expires, the mobile stations 103A and 103B acquire position information from the GPS module, The licensee specific information (position information notification) in which the information and the position information acquisition time are set is transmitted to the base stations 102A and 102B, and the T2 timer is restarted (steps 332 and 333).
　基地局１０２Ａ，１０２Ｂは、移動局１０３Ａ，１０３Ｂから受信した免許人固有情報（位置情報通知）を統制局制御装置２０１へ転送し、統制局制御装置２０１は、地図表示装置２０４へ転送する（ステップ３３４～３３９）。
　以降、統制局制御装置２０１は、Ｔ１タイマが満了する度に位置情報取得要求を順次送信し、移動局１０３Ａ，１０３Ｂは、Ｔ２タイマが満了する度に位置情報通知を繰り返す（ステップ３４０～３４９）。 The base stations 102A and 102B transfer the licensee specific information (position information notification) received from the mobile stations 103A and 103B to the control station control device 201, and the control station control device 201 transfers the information to the map display device 204 (step). 334-339).
Thereafter, the control station control device 201 sequentially transmits a position information acquisition request every time the T1 timer expires, and the mobile stations 103A and 103B repeat position information notification every time the T2 timer expires (steps 340 to 349). .
　図４には、移動局位置情報取得（強制取得）シーケンスの例を示してある。
　地図表示装置２０４は、図３の移動局位置情報取得シーケンスで指定した通知間隔Ｔ２秒より詳細に（短い間隔で）位置情報を取得する場合には、強制取得対象の移動局の指定と、通知間隔としてＴ３（＜Ｔ２）秒のタイマ値を追加した位置情報取得要求を統制局制御装置２０１へ送信する（ステップ４０１，４０２）。地図表示装置２０４は、強制取得対象の移動局を複数台設定することが可能であるが、図４では移動局１０３Ａ（第１の移動局）のみとしている。 FIG. 4 shows an example of a mobile station position information acquisition (forced acquisition) sequence.
When the map display device 204 acquires position information in more detail (with a shorter interval) than the notification interval T2 seconds specified in the mobile station position information acquisition sequence in FIG. A position information acquisition request to which a timer value of T3 (<T2) seconds is added as an interval is transmitted to the control station controller 201 (steps 401 and 402). Although the map display device 204 can set a plurality of mobile stations to be forcibly acquired, only the mobile station 103A (first mobile station) is shown in FIG.
　統制局制御装置２０１は、Ｔ１タイマが満了すると、グループ００の対象基地局情報を確認し、位置情報取得要求を基地局１０２Ａ，１０２Ｂへ順次送信する（ステップ４０３～４０７）。この位置情報取得要求には、強制取得対象の移動局の指定と、通知間隔Ｔ３秒のタイマ値が設定されている。 When the T1 timer expires, the control station control device 201 confirms the target base station information of the group 00, and sequentially transmits a location information acquisition request to the base stations 102A and 102B (steps 403 to 407). In this position information acquisition request, a mobile station to be forcibly acquired and a timer value of notification interval T3 seconds are set.
　移動局１０３Ａは、免許人固有情報（位置情報取得要求）を受信すると、前回通知した条件（強制取得対象ではない）と異なるため、Ｔ２タイマを停止する（ステップ４０８）。また、ＧＰＳモジュールから位置情報を取得し、位置情報及び位置情報取得時間を設定した免許人固有情報（位置情報通知）を基地局１０２Ａへ送信して、通知間隔Ｔ３を計測するタイマ（以下、「Ｔ３タイマ」という）を起動する（ステップ４０９，４１０）。
　基地局１０２Ａは、移動局１０３Ａから受信した免許人固有情報（位置情報通知）を統制局制御装置２０１へ転送し、統制局制御装置２０１は、地図表示装置２０４へ転送する（ステップ４１１，４１２）。 When the mobile station 103A receives the licensee-specific information (position information acquisition request), the mobile station 103A stops the T2 timer because it differs from the previously notified condition (not subject to forced acquisition) (step 408). Further, a timer (hereinafter referred to as “a”) that acquires position information from the GPS module, transmits the position information and licensee specific information (position information notification) in which the position information acquisition time is set to the base station 102A, and measures the notification interval T3. (T3 timer) is started (steps 409 and 410).
The base station 102A transfers the licenser-specific information (position information notification) received from the mobile station 103A to the control station control device 201, and the control station control device 201 transfers it to the map display device 204 (steps 411 and 412). .
　一方、移動局１０３Ｂは、免許人固有情報（位置情報取得要求）を受信すると、前回通知した条件（強制取得対象ではない）と同様のため、ＧＰＳモジュールから位置情報を取得し、位置情報及び位置情報取得時間を設定した免許人固有情報（位置情報通知）を基地局１０２Ｂへ送信して、Ｔ２タイマを起動し直す（ステップ４１３）。
　基地局１０２Ｂは、移動局１０３Ｂから受信した免許人固有情報（位置情報通知）を統制局制御装置２０１へ転送し、統制局制御装置２０１は、地図表示装置２０４へ転送する（ステップ４１４，４１５）。 On the other hand, when the mobile station 103B receives the licensee specific information (position information acquisition request), the mobile station 103B acquires the position information from the GPS module because it is the same as the previously notified condition (not subject to forced acquisition). The licensee specific information (position information notification) in which the information acquisition time is set is transmitted to the base station 102B, and the T2 timer is restarted (step 413).
The base station 102B transfers the licenser-specific information (position information notification) received from the mobile station 103B to the control station control device 201, and the control station control device 201 transfers it to the map display device 204 (steps 414 and 415). .
　以降、統制局制御装置２０１は、Ｔ１タイマが満了する度に位置情報取得要求を順次送信し、移動局１０３Ａは、Ｔ３タイマが満了する度に位置情報通知を送信し、移動局１０３Ｂは、Ｔ２タイマが満了する度に位置情報通知を送信する（ステップ４１６～４４２）。
　移動局１０３Ａの通知間隔をＴ２秒に戻す場合には、ステップ４０１，４０２で移動局１０３Ａを強制取得対象の移動局の指定から外した位置情報取得要求を統制局制御装置２０１へ送信することで可能である。 Thereafter, the control station control device 201 sequentially transmits a position information acquisition request every time the T1 timer expires, the mobile station 103A transmits a position information notification every time the T3 timer expires, and the mobile station 103B Whenever the timer expires, a position information notification is transmitted (steps 416 to 442).
When returning the notification interval of the mobile station 103A to T2 seconds, by transmitting to the control station control apparatus 201 a position information acquisition request in which the mobile station 103A is excluded from the designation of the mobile station to be forcibly acquired in steps 401 and 402. Is possible.
　図５には、移動局位置情報取得停止シーケンスの例を示してある。
　地図表示装置２０４は、位置情報取得停止要求を統制局制御装置２０１へ送信する（ステップ５０１）。
　統制局制御装置２０１は、位置情報取得停止要求を受信すると、Ｔ１タイマを停止する（ステップ５０２）。これにより、以降は、統制局制御装置２０１から位置情報取得要求が送信されなくなる。
　移動局１０３Ａ，１０３Ｂは、Ｔ２タイマの満了時に、前回通知した条件と同様の位置情報取得要求を受信していない場合には、Ｔ２タイマを停止する（ステップ５０３，５０４）。本例では、統制局制御装置２０１による位置情報取得要求の送信が停止されるので、移動局１０３Ａ，１０３Ｂは、Ｔ２タイマの満了までに位置情報取得要求を受信できないため、Ｔ２タイマが満了しても位置情報通知は行わない。 FIG. 5 shows an example of a mobile station position information acquisition stop sequence.
The map display device 204 transmits a position information acquisition stop request to the control station control device 201 (step 501).
Upon receiving the position information acquisition stop request, the control station control device 201 stops the T1 timer (step 502). Thereby, thereafter, the location information acquisition request is not transmitted from the control station control device 201.
If the mobile stations 103A and 103B have not received a position information acquisition request similar to the previously notified condition when the T2 timer expires, the mobile stations 103A and 103B stop the T2 timer (steps 503 and 504). In this example, since the transmission of the location information acquisition request by the control station control device 201 is stopped, the mobile stations 103A and 103B cannot receive the location information acquisition request before the T2 timer expires, so the T2 timer expires. Also, no location information notification is performed.
　図６には、移動局位置情報通知失敗シーケンスの例を示してある。
　移動局１０３Ａは、Ｔ２タイマの満了時に位置情報通知を基地局１０２Ａへ送信するが、無線回線の状態や基地局１０２Ａ，１０２Ｂの状態により位置情報通知の送信に失敗した場合は、移動局１０３Ａで位置情報及び位置情報取得時間をメモリに保持しておく（ステップ６０１，６０２）。
　移動局１０３Ａは、次回のＴ２タイマの満了時に、ＧＰＳモジュールから位置情報を取得し、位置情報及び位置情報取得時間、並びに送信に失敗した位置情報及び位置情報取得時間を設定した免許人固有情報（位置情報通知）を基地局１０２Ａへ送信する（ステップ６０３）。 FIG. 6 shows an example of the mobile station location information notification failure sequence.
When the T2 timer expires, the mobile station 103A transmits a location information notification to the base station 102A. If the location information notification fails due to the state of the radio line or the base stations 102A and 102B, the mobile station 103A The position information and the position information acquisition time are stored in the memory (steps 601 and 602).
When the next T2 timer expires, the mobile station 103A acquires the position information from the GPS module, and sets the position information and the position information acquisition time, and the position information and the position information acquisition time in which the transmission has failed, (Location information notification) is transmitted to the base station 102A (step 603).
　図７には、移動局位置情報取得（移動局通信中）シーケンスの例を示してある。
　移動局１０３Ａは、Ｔ２タイマの満了時に、位置情報通知を制御チャネルのＰＣＨを用いて基地局１０２Ａへ送信するが、通信中へ移行した場合は制御チャネルのＰＣＨを用いて位置情報通知を送信することが不可能となる。
　そこで、移動局１０３Ａは、通信中（個別通信）へ移行した場合は、通信チャネルのＦＡＣＣＨ（高速付随制御チャネル）を用いて位置情報通知を基地局１０２Ａへ送信する（ステップ７０１）。 FIG. 7 shows an example of a mobile station position information acquisition (during mobile station communication) sequence.
When the T2 timer expires, the mobile station 103A transmits a position information notification to the base station 102A using the PCH of the control channel, but transmits a position information notification using the PCH of the control channel when transitioning to communication. It becomes impossible.
Therefore, when the mobile station 103A shifts to communication (individual communication), the mobile station 103A transmits a location information notification to the base station 102A using the communication channel FACCH (high-speed associated control channel) (step 701).
　また、移動局１０３Ｂは、通信中（グループ通信）へ移行した場合は、送信権を取得して送信状態にならない限り位置情報通知を送信できないため、Ｔ２タイマの満了時に、移動局１０３Ｂで位置情報及び位置情報取得時間をメモリに保持しておく（ステップＳ７０７）。そして、移動局１０３Ｂは、Ｔ２タイマの満了時ではなく、送信権を取得し、送信状態に移行したことを契機に、ＧＰＳモジュールから位置情報を取得し、位置情報及び位置情報取得時間、並びに送信できなかった位置情報及び位置情報取得時間を設定した免許人固有情報（位置情報通知）を基地局１０２Ｂへ送信する（ステップ７０８，７０９）。
　その後、移動局１０３Ａ，１０３Ｂは、通信中からアイドル状態に移行すると、Ｔ２タイマが満了する度に、位置情報通知をＰＣＨで送信する（ステップ７１２）。 Further, when the mobile station 103B shifts to communication (group communication), the mobile station 103B cannot transmit the position information notification unless it acquires the transmission right and enters the transmission state. The position information acquisition time is stored in the memory (step S707). Then, the mobile station 103B acquires the transmission right, not when the T2 timer expires, and acquires the position information from the GPS module when the state is shifted to the transmission state, and acquires the position information, the position information acquisition time, and the transmission. The licensee specific information (position information notification) in which the position information that could not be set and the position information acquisition time is set is transmitted to the base station 102B (steps 708 and 709).
Thereafter, when the mobile stations 103A and 103B shift from the communication state to the idle state, each time the T2 timer expires, the mobile stations 103A and 103B transmit a location information notification by PCH (step 712).
　以上のように、本例の防災無線システムは、統制局１０１と、基地局１０２と、移動局１０３とを備えており、統制局１０１が、移動局１０３の位置情報の取得要求を送信し、基地局１０２が、統制局１０１から受信した位置情報の取得要求を制御チャネルのＰＣＨを用いて移動局１０３に転送し、移動局１０３が、基地局１０２から受信した位置情報の取得要求に基づいて、自局の位置情報を取得して制御チャネルのＰＣＨを用いて基地局１０２に送信し、基地局１０２が、移動局１０３から受信した位置情報を統制局１０１に転送する。
　このように、移動局１０３の位置情報を取得する際の基地局１０２と移動局１０３の間のやりとりをＰＣＨを用いて行うことで、低速な防災無線でも通信の輻輳を抑え、運用に支障を及ぼすことなく移動局１０３の位置情報を取得できるようになる。 As described above, the disaster prevention radio system of this example includes the control station 101, the base station 102, and the mobile station 103, and the control station 101 transmits a request for acquiring the location information of the mobile station 103, The base station 102 transfers the position information acquisition request received from the control station 101 to the mobile station 103 using the PCH of the control channel, and the mobile station 103 is based on the position information acquisition request received from the base station 102. The position information of the own station is acquired and transmitted to the base station 102 using the PCH of the control channel, and the base station 102 transfers the position information received from the mobile station 103 to the control station 101.
In this way, the communication between the base station 102 and the mobile station 103 when acquiring the location information of the mobile station 103 is performed using the PCH, thereby suppressing communication congestion even in low-speed disaster prevention radio, and hindering operation. The position information of the mobile station 103 can be acquired without exerting any influence.
　また、本例の防災無線システムでは、統制局１０１は、受信した移動局１０３の位置情報を地図上に表示する地図表示装置２０４を有する。したがって、移動局１０３の位置情報を地図上で確認できるため、例えば、災害時に移動局の位置を一目で把握することが可能となり、災害発生現場への職員の迅速な派遣、避難誘導などを行えるようになる。 In the disaster prevention radio system of this example, the control station 101 has a map display device 204 that displays the received location information of the mobile station 103 on a map. Therefore, since the location information of the mobile station 103 can be confirmed on a map, for example, the location of the mobile station can be grasped at a glance at the time of a disaster, and staff can be dispatched to the disaster site and evacuation guidance can be performed quickly. It becomes like this.
　また、本例の防災無線システムでは、統制局１０１は、基地局１０２の指定を含む位置情報の取得要求を送信し、基地局１０２は、自局の指定を含む位置情報の取得要求を受信した場合に、自局の無線通信エリア内の移動局１０３へ当該位置情報の取得要求を転送する。したがって、収集対象のエリア（基地局１０２）を絞って位置情報の収集を行うことができる。 Further, in the disaster prevention radio system of this example, the control station 101 transmits a request for acquiring position information including the designation of the base station 102, and the base station 102 receives the request for acquiring position information including the designation of the own station. In this case, the position information acquisition request is transferred to the mobile station 103 in the wireless communication area of the local station. Therefore, it is possible to collect location information by narrowing down the area to be collected (base station 102).
　また、本例の防災無線システムでは、統制局１０１は、位置情報の取得要求を送信する間隔を計測するＴ１タイマを有し、Ｔ１タイマの満了時に、位置情報の取得要求を送信する共にＴ１タイマを起動し直す。また、移動局１０３は、位置情報を取得して送信する間隔を計測するＴ２タイマを有し、Ｔ２タイマを起動していない状態では、位置情報の取得要求を受信したことに応じて、位置情報を取得して送信すると共にＴ２タイマを起動し、Ｔ２タイマを起動した状態では、Ｔ２タイマが満了するまでに位置情報の取得要求を受信した場合に、Ｔ２タイマが満了したことに応じて、位置情報を取得して送信すると共にＴ２タイマを起動し直す。したがって、移動局１０３が再起動した場合や、後起動（位置情報の収集の開始後に起動）した場合でも、特別な操作を行うことなく、位置情報を収集することができる。
　なお、Ｔ１タイマの計測間隔は、例えば、統制局１０１に予め設定されていてもよく、地図表示装置２０４のユーザにより指定されてもよい。また、Ｔ２タイマの計測間隔は、例えば、移動局１０３に予め設定されていてもよく、地図表示装置２０４のユーザにより指定されてもよい。 Further, in the disaster prevention radio system of this example, the control station 101 has a T1 timer for measuring an interval for transmitting a position information acquisition request, and transmits a position information acquisition request when the T1 timer expires. Start again. In addition, the mobile station 103 has a T2 timer that measures the interval at which the position information is acquired and transmitted. When the T2 timer is not activated, the mobile station 103 receives the position information acquisition request in response to receiving the position information acquisition request. In the state where the T2 timer is activated and the T2 timer is activated, the position information acquisition request is received before the T2 timer expires. Acquire and transmit information and restart the T2 timer. Therefore, even when the mobile station 103 is restarted or later started (started after the start of collection of position information), the position information can be collected without performing a special operation.
Note that the measurement interval of the T1 timer may be preset in the control station 101, for example, or may be specified by the user of the map display device 204. In addition, the measurement interval of the T2 timer may be set in advance in the mobile station 103 or may be specified by the user of the map display device 204, for example.
　また、本例の防災無線システムでは、統制局１０１が、送信先の移動局１０３が複数ある場合に、通知間隔Ｔ２を含む位置情報の取得要求を、基地局１０２を介して複数の移動局１０３に順次送信する。また、移動局１０３は、基地局１０２から受信した位置情報の取得要求で指定された通知間隔Ｔ２を計測するＴ２タイマを起動し、Ｔ２タイマが満了するまでに位置情報の取得要求を受信した場合に、Ｔ２タイマが満了したことに応じて、位置情報を取得して送信すると共にＴ２タイマを起動し直す。したがって、各移動局１０３からの位置情報の送信が順次行われることで、通信の輻輳を抑止することができる。 Further, in the disaster prevention radio system of this example, when there are a plurality of transmission destination mobile stations 103, the control station 101 sends a request for acquiring location information including the notification interval T2 via the base station 102 to the plurality of mobile stations 103. Sequentially. In addition, when the mobile station 103 activates a T2 timer that measures the notification interval T2 specified in the position information acquisition request received from the base station 102, and receives the position information acquisition request before the T2 timer expires In response to the expiration of the T2 timer, the position information is acquired and transmitted, and the T2 timer is restarted. Therefore, transmission of position information from each mobile station 103 is sequentially performed, so that communication congestion can be suppressed.
　また、本例の防災無線システムでは、統制局１０１が、Ｔ２タイマの計測間隔よりも短い間隔及び移動局の指定を含む位置情報の取得要求を送信し、移動局１０３は、Ｔ２タイマが満了するまでに、前記短い間隔及び自局の指定を含む位置情報の取得要求を受信した場合には、Ｔ２タイマの満了を待たずに位置情報を取得して送信すると共に、Ｔ２タイマを停止して前記短い間隔を計測するＴ３タイマを起動し、以降はＴ３タイマに従って位置情報の取得及び送信を行う。したがって、運用への支障を極力抑えつつ、必要な移動局１０３だけを指定してリアルタイムな位置情報を取得することができる。
　なお、Ｔ３タイマの計測間隔やこれを適用する移動局１０３の指定は、例えば、地図表示装置２０４のユーザにより設定される。 Further, in the disaster prevention radio system of this example, the control station 101 transmits a request for acquiring position information including an interval shorter than the measurement interval of the T2 timer and the designation of the mobile station, and the mobile station 103 expires the T2 timer. By the time, when receiving the acquisition request of the position information including the short interval and the designation of the own station, the position information is acquired and transmitted without waiting for the expiration of the T2 timer, and the T2 timer is stopped to A T3 timer that measures a short interval is started, and thereafter, position information is acquired and transmitted according to the T3 timer. Therefore, real-time position information can be acquired by designating only the necessary mobile station 103 while minimizing the hindrance to operation.
Note that the measurement interval of the T3 timer and the designation of the mobile station 103 to which this is applied are set by the user of the map display device 204, for example.
　また、本例の防災無線システムでは、統制局１０１が、地図表示装置２０４による指示に基づいてＴ１タイマを停止し、移動局１０３が、Ｔ２タイマ（又はＴ３タイマ）が満了するまでに位置情報の取得要求を受信しない場合には、位置情報の取得及び送信を行わずにＴ２タイマ（又はＴ３タイマ）を停止する。したがって、移動局１０３は、位置情報の取得要求を所定時間内に受信できない場合には、自動的に位置情報の収集動作を停止するため、統制局１０１は位置情報の収集動作を停止させるための指示を移動局１０３へ送信する必要が無い。このため、位置情報の取得停止後に余計なトラフィックを発生させないように運用を継続することができる。 Further, in the disaster prevention wireless system of this example, the control station 101 stops the T1 timer based on an instruction from the map display device 204, and the mobile station 103 does not receive the location information until the T2 timer (or T3 timer) expires. When the acquisition request is not received, the T2 timer (or T3 timer) is stopped without acquiring and transmitting the position information. Therefore, if the mobile station 103 cannot receive the position information acquisition request within a predetermined time, the mobile station 103 automatically stops the position information collecting operation, so that the control station 101 stops the position information collecting operation. There is no need to transmit an instruction to the mobile station 103. For this reason, the operation can be continued so as not to generate extra traffic after the acquisition of position information is stopped.
　また、本例の防災無線システムでは、移動局１０３は、個別通信による通信中の場合には、取得した位置情報を通信チャネルのＦＡＣＣＨを用いて送信する。したがって、移動局１０３が個別通信に移行した場合でも、ＦＡＣＣＨを利用して位置情報の収集を継続することができる。 Also, in the disaster prevention radio system of this example, the mobile station 103 transmits the acquired position information using the FACCH of the communication channel when performing communication by individual communication. Therefore, even when the mobile station 103 shifts to individual communication, it is possible to continue collecting location information using the FACCH.
　また、本例の防災無線システムでは、移動局１０３は、グループ通信による通信中の場合には、取得した位置情報をメモリに保持しておき、送信権を取得して送信状態に移行したことに応じて、新たに位置情報を取得してメモリに保持している位置情報と共に送信する。したがって、移動局１０３がグループ通信に移行した場合でも、送信状態となったタイミングで位置情報の送信を行うことができる。 Further, in the disaster prevention radio system of this example, the mobile station 103 retains the acquired position information in the memory during communication by group communication, acquires the transmission right, and shifts to the transmission state. In response, new position information is acquired and transmitted together with the position information held in the memory. Therefore, even when the mobile station 103 shifts to group communication, the position information can be transmitted at the timing when the transmission state is entered.
　また、本例の防災無線システムでは、移動局１０３は、位置情報の送信に失敗した場合には、取得した位置情報をメモリに保持しておき、次回の送信タイミング（Ｔ２タイマ等の満了時）で、新たに位置情報を取得してメモリに保持している位置情報と共に送信する。したがって、移動局１０３が一時的な通信障害（無線回線状態や基地局状態の異常など）により位置情報を送信できなかった場合でも、通信が復旧した後に位置情報の送信を行うことができる。 Moreover, in the disaster prevention radio system of this example, when the mobile station 103 fails to transmit the position information, the mobile station 103 stores the acquired position information in the memory, and next transmission timing (when the T2 timer expires). Then, the position information is newly acquired and transmitted together with the position information held in the memory. Therefore, even when the mobile station 103 cannot transmit the position information due to a temporary communication failure (such as an abnormality in the wireless channel state or the base station state), the position information can be transmitted after the communication is restored.
　また、本例の防災無線システムでは、移動局１０３は、位置情報と共に位置情報の取得時間を送信する。したがって、統制局１０１において、移動局１０３の位置の推移（時間的変化）についても特定できるようになる。なお、地図表示装置２０４で移動局１０３の位置の推移を地図上に表示するようにしてもよい。 Moreover, in the disaster prevention wireless system of this example, the mobile station 103 transmits the acquisition time of the position information together with the position information. Therefore, the control station 101 can also specify the transition (temporal change) of the position of the mobile station 103. The map display device 204 may display the transition of the position of the mobile station 103 on the map.
　なお、本発明に係るシステムや装置などの構成としては、必ずしも以上に示したものに限られず、種々な構成が用いられてもよい。
　また、本発明は、例えば、本発明に係る処理を実行する方法や方式、このような方法や方式を実現するためのプログラムや当該プログラムを記憶する記憶媒体などとして提供することも可能である。 Note that the configurations of the system and apparatus according to the present invention are not necessarily limited to those described above, and various configurations may be used.
The present invention can also be provided, for example, as a method or method for executing the processing according to the present invention, a program for realizing such a method or method, or a storage medium for storing the program.
　本発明は、統制局と、基地局と、移動局とを備えた種々の形式の無線通信システムに利用することができる。 The present invention can be used in various types of wireless communication systems including a control station, a base station, and a mobile station.
　１０１：統制局、　１０２（１０２Ａ，１０２Ｂ）：基地局、　１０３（１０３Ａ，１０３Ｂ）：移動局、　１０４（１０４Ａ，１０４Ｂ）：固定局端末、
　２０１：統制局制御装置、　２０２：運用管理装置、　２０３：統制台、　２０４：地図表示装置 101: Control station 102 (102A, 102B): Base station 103 (103A, 103B): Mobile station 104 (104A, 104B): Fixed station terminal
201: Control station control device, 202: Operation management device, 203: Control table, 204: Map display device

Claims (5)

  1. 　統制局と、基地局と、移動局とを備えた無線通信システムにおいて、
    　前記統制局は、前記移動局の位置情報の取得要求を送信し、
    　前記基地局は、前記統制局から受信した位置情報の取得要求を制御チャネルを用いて前記移動局に転送し、
    　前記移動局は、前記基地局から受信した位置情報の取得要求に基づいて、自局の位置情報を取得して制御チャネルを用いて前記基地局に送信し、
    　さらに、前記基地局は、前記移動局から受信した位置情報を前記統制局に転送することを特徴とする無線通信システム。     In a wireless communication system comprising a control station, a base station, and a mobile station,
    The control station transmits a request for acquiring location information of the mobile station,
    The base station transfers a position information acquisition request received from the control station to the mobile station using a control channel,
    The mobile station, based on an acquisition request for position information received from the base station, acquires the position information of its own station and transmits it to the base station using a control channel,
    Furthermore, the base station transfers position information received from the mobile station to the control station.
  2. 　請求項１に記載の無線通信システムにおいて、
    　前記統制局は、
    　位置情報の取得要求を送信する間隔を計測する第１のタイマを有し、
    　第１のタイマの満了時に、位置情報の取得要求を送信すると共に前記第１のタイマを起動し直し、
    　前記移動局は、
    　位置情報を取得して送信する間隔を計測する第２のタイマを有し、
    　前記第２のタイマを起動していない状態では、位置情報の取得要求を受信したことに応じて、位置情報を取得して送信すると共に前記第２のタイマを起動し、
    　前記第２のタイマを起動した状態では、前記第２のタイマが満了するまでに位置情報の取得要求を受信した場合に、前記第２のタイマが満了したことに応じて、位置情報を取得して送信すると共に前記第２のタイマを起動し直すことを特徴とする無線通信システム。     The wireless communication system according to claim 1, wherein
    The control station
    A first timer for measuring an interval for transmitting a position information acquisition request;
    When the first timer expires, a request for acquiring position information is transmitted and the first timer is restarted.
    The mobile station
    A second timer for measuring an interval for acquiring and transmitting position information;
    In a state where the second timer is not started, in response to receiving the position information acquisition request, the position information is acquired and transmitted and the second timer is started.
    In a state where the second timer is activated, when a request for acquiring position information is received before the second timer expires, the position information is acquired in response to the expiration of the second timer. And the second timer is restarted and transmitted.
  3. 　請求項１に記載の無線通信システムにおいて、
    　前記統制局は、
    　位置情報の取得要求を送信する間隔を計測する第１のタイマを有し、
    　第１のタイマの満了時に、位置情報の取得要求を送信すると共に前記第１のタイマを起動し直し、
    　さらに、前記移動局が複数ある場合に、位置情報を取得して送信する間隔の指定を含む位置情報の取得要求を、前記基地局を介して複数の前記移動局に順次送信し、
    　前記基地局は、前記統制局から受信した位置情報の取得要求を前記移動局に転送し、
    　前記移動局は、前記基地局から受信した位置情報の取得要求で指定された間隔を計測する第２のタイマを起動し、
    　前記第２のタイマが満了するまでに位置情報の取得要求を受信した場合に、前記第２のタイマが満了したことに応じて、位置情報を取得して送信すると共に前記第２のタイマを起動し直すことを特徴とする無線通信システム。     The wireless communication system according to claim 1, wherein
    The control station
    A first timer for measuring an interval for transmitting a position information acquisition request;
    When the first timer expires, a request for acquiring position information is transmitted and the first timer is restarted.
    Further, when there are a plurality of the mobile stations, a position information acquisition request including designation of an interval for acquiring and transmitting the position information is sequentially transmitted to the plurality of mobile stations via the base station,
    The base station forwards the acquisition request for location information received from the control station to the mobile station,
    The mobile station starts a second timer that measures the interval specified in the position information acquisition request received from the base station,
    When a request for acquisition of position information is received before the second timer expires, the position information is acquired and transmitted and the second timer is started in response to the expiration of the second timer. A wireless communication system characterized by reworking.
  4. 　請求項１乃至請求項３のいずれかに記載の無線通信システムにおいて、
    　前記移動局は、
    　個別通信による通信中の場合には、取得した位置情報を通信チャネルを用いて送信し、
    　グループ通信による通信中の場合には、取得した位置情報を保持しておき、送信権を取得して送信状態に移行したことに応じて、新たに位置情報を取得して前記保持している位置情報と共に送信し、
    　位置情報の送信に失敗した場合には、取得した位置情報を保持しておき、次回の送信タイミングで、新たに位置情報を取得して前記保持している位置情報と共に送信することを特徴とする無線通信システム。     The radio communication system according to any one of claims 1 to 3,
    The mobile station
    When communicating by individual communication, send the acquired location information using the communication channel,
    In the case of communication by group communication, the acquired position information is retained, and in response to acquiring the transmission right and shifting to the transmission state, the position information is newly acquired and retained. Send with information,
    When the transmission of the position information fails, the acquired position information is held, and at the next transmission timing, the position information is newly acquired and transmitted together with the held position information. Wireless communication system.
  5. 　統制局と、基地局と、移動局とを備えた無線通信システムにおける移動局の位置情報取得方法において、
    　前記統制局が、前記移動局の位置情報の取得要求を送信し、
    　前記基地局が、前記統制局から受信した位置情報の取得要求を制御チャネルを用いて前記移動局に転送し、
    　前記移動局が、前記基地局から受信した位置情報の取得要求に基づいて、自局の位置情報を取得して制御チャネルを用いて前記基地局に送信し、
    　前記基地局が、前記移動局から受信した位置情報を前記統制局に転送することを特徴とする移動局の位置情報取得方法。     In a mobile station location information acquisition method in a wireless communication system comprising a control station, a base station, and a mobile station,
    The control station transmits an acquisition request for location information of the mobile station,
    The base station, using a control channel, transfers the location information acquisition request received from the control station to the mobile station,
    Based on the location information acquisition request received from the base station, the mobile station acquires its own location information and transmits it to the base station using a control channel,
    A location information acquisition method for a mobile station, wherein the base station transfers location information received from the mobile station to the control station.
PCT/JP2017/031094 2016-09-28 2017-08-30 Radio communiation system and positional information acquisition method for mobile station WO2018061587A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004282193A (en) * 2003-03-13 2004-10-07 Hitachi Kokusai Electric Inc Digital radio system
JP2007174333A (en) * 2005-12-22 2007-07-05 Fujitsu Ltd Method and system for judging propriety of mobile communication, location information server, mobile terminal and transportation means positioning apparatus
JP2007214893A (en) * 2006-02-09 2007-08-23 Hitachi Kokusai Electric Inc Radio communication system and instruction reception confirming method
JP2008154120A (en) * 2006-12-20 2008-07-03 Nec Corp Wireless communication system, base stations, mobile stations, and position information receiving method used therefor
JP2009177639A (en) * 2008-01-25 2009-08-06 Nec Corp Radio communication system, and radio communication method
WO2014155494A1 (en) * 2013-03-25 2014-10-02 富士通株式会社 Wireless communication system, base station, wireless communication device, and wireless communication method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005086678A (en) * 2003-09-10 2005-03-31 Hitachi Kokusai Electric Inc Monitoring information collection method in mobile radio system
JP4646564B2 (en) * 2004-07-27 2011-03-09 京セラ株式会社 Mobile communication system, link control method, and program
JP2006333345A (en) * 2005-05-30 2006-12-07 Nec Access Technica Ltd Mobile station, mobile communication system, location information notification method and location information notification program
JP6053511B2 (en) * 2012-09-26 2016-12-27 株式会社日立国際電気 Wireless communication system
JP6275419B2 (en) * 2013-03-29 2018-02-07 株式会社日立国際電気 Wireless communication system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004282193A (en) * 2003-03-13 2004-10-07 Hitachi Kokusai Electric Inc Digital radio system
JP2007174333A (en) * 2005-12-22 2007-07-05 Fujitsu Ltd Method and system for judging propriety of mobile communication, location information server, mobile terminal and transportation means positioning apparatus
JP2007214893A (en) * 2006-02-09 2007-08-23 Hitachi Kokusai Electric Inc Radio communication system and instruction reception confirming method
JP2008154120A (en) * 2006-12-20 2008-07-03 Nec Corp Wireless communication system, base stations, mobile stations, and position information receiving method used therefor
JP2009177639A (en) * 2008-01-25 2009-08-06 Nec Corp Radio communication system, and radio communication method
WO2014155494A1 (en) * 2013-03-25 2014-10-02 富士通株式会社 Wireless communication system, base station, wireless communication device, and wireless communication method

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