WO2022162862A1 - Mobile station - Google Patents

Mobile station Download PDF

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Publication number
WO2022162862A1
WO2022162862A1 PCT/JP2021/003199 JP2021003199W WO2022162862A1 WO 2022162862 A1 WO2022162862 A1 WO 2022162862A1 JP 2021003199 W JP2021003199 W JP 2021003199W WO 2022162862 A1 WO2022162862 A1 WO 2022162862A1
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WO
WIPO (PCT)
Prior art keywords
mobile station
line
switching
section
operating
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PCT/JP2021/003199
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French (fr)
Japanese (ja)
Inventor
悠太 淵辺
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三菱電機株式会社
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2021/003199 priority Critical patent/WO2022162862A1/en
Priority to JP2022577942A priority patent/JPWO2022162862A1/ja
Publication of WO2022162862A1 publication Critical patent/WO2022162862A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft

Definitions

  • the present disclosure relates to a mobile station of a train radio system, and particularly to a mobile station capable of switching radio systems.
  • the train radio system is a system that communicates between each vehicle in operation and the central control room during train operation.
  • wireless communication is performed between a mobile station mounted on a vehicle, which is a mobile object, and a base station installed on the ground side via spatial waves or leaky coaxial cables (LCX).
  • LCX leaky coaxial cables
  • the frequency is switched when receiving the switching signal sent by the switching base station.
  • the conventional method of changing only the frequency cannot cope with it.
  • the system was switched while the train was stopped at the station connecting each line section. In this case, in a situation where the boundary between each line section is between stations, it is necessary to temporarily stop the vehicle near the boundary and switch the system, which may be a factor in lowering the operation efficiency.
  • the present disclosure has been made in order to solve the above-mentioned problems, and the wireless system of mobile stations can be seamlessly switched without lowering the operational efficiency of trains, even in line sections that are not systematically synchronized. It is an object of the present invention to provide a mobile station capable of switching.
  • a mobile station is a mobile station mounted on a train that moves over first and second railroad sections that have different train radio systems, and includes: a first railroad mobile station; and a line switching identifier, wherein when the line switching identifier receives a specific signal output from the first and second line mobile stations determining line section switching based on the specific signal, inputting a line section switching signal to the first and second line section mobile stations, and selecting one of the first and second line section mobile stations. , the one corresponding to the line section after switching is set as the operating mobile station that operates the train radio system.
  • the mobile station by determining line switching using reception of specific signals output from the first and second line mobile stations as a trigger, it is possible to operate by different train radio systems. It is possible to seamlessly switch the radio system of the mobile station without lowering the operating efficiency of the train even in the line section where the train is located.
  • FIG. 1 is a conceptual diagram showing the configuration of a train radio system using mobile stations according to Embodiment 1;
  • FIG. 2 is a block diagram showing the configuration of a mobile station according to Embodiment 1;
  • FIG. 4 is a flowchart for explaining an operation of switching a radio system in the mobile station of Embodiment 1;
  • FIG. 4 is a block diagram showing the configuration of a mobile station according to Embodiment 2;
  • FIG. FIG. 12 is a flowchart for explaining an operation of switching a radio system in a mobile station according to Embodiment 2;
  • FIG. 1 is a conceptual diagram showing the configuration of a train radio system using mobile stations according to Embodiment 1, showing a train radio system using an LCX as a radio antenna. Further, in this train radio system, the train TR runs on a first line section, that is, A line section, and a second line section, that is, B line section, which are controlled by different entities.
  • Line A and Line B are not synchronized as a train radio system, and that the radio frequencies used are also different.
  • the ends of the coaxial cables AX and BX of the A line section and the B line section, respectively, are laid so as to overlap with the line section of the destination, and are areas where radio waves from both the A line section and the B line section can be received. It secures the AB boundary zone.
  • the mobile station MV1 mounted on the train TR in the AB boundary zone receives radio waves of frequency Fa used in section A and frequency Fb used in section B, but different frequencies that do not interfere with each other. It has become.
  • FIG. 2 is a block diagram showing the configuration of the mobile station MV1 according to the first embodiment.
  • the mobile station MV1 includes a first line mobile station, that is, a line A mobile station AMV, a second line line mobile station, that is, a line B mobile station BMV, and a line and a section switching discriminator SW.
  • the mobile station AMV for line A and the mobile station BMV for line B are collectively referred to as individual line mobile stations.
  • the mobile station AMV for line A is configured to be able to transmit and receive a radio signal ARS for line A of frequency Fa
  • the mobile station BMV for line B is configured to be capable of transmitting and receiving a radio signal BRS for line B of frequency Fb. It is The mobile station that actually operates the train radio system, that is, the operating mobile station is only one of the mobile station AMV for line A and the mobile station BMV for line B.
  • the mobile station AMV for line A has a radio transmission/reception section 1, a demodulation section 2, a control section 3, a storage section 4, an input/output section 5 and a wait timer counter 6.
  • the mobile station BMV for line B has a radio transmission/reception section 11 , a demodulation section 12 , a control section 13 , a storage section 14 , an input/output section 15 and a wait timer counter 16 .
  • Each individual line section mobile station can transmit and receive radio signals via the LCX on each corresponding line section. That is, taking the A-line mobile station AMV as an example, the radio signal ARS received in the A-line section is demodulated by the demodulator 2 . After detecting the synchronization word contained in the demodulated radio signal ARS a specified number of times, the control unit 3 synchronizes with the first base station on the A line, that is, the base station AS, and the radio transmission/reception unit 1 can transmit the radio signal ARS. become. At this time, a synchronization completion signal S1 is output from the control unit 3, which has completed synchronization, to the line switching discriminator SW via the input/output unit 5.
  • FIG. The above operation is the same for the second base station in the B line, that is, the base station BS and the B line mobile station BMV.
  • the synchronization word is a pattern used to determine the transmission timing of the frame of the mobile station.
  • Each frame transmitted from the base station contains a plurality of patterns. can be detected to synchronize with the base station and transmit radio signals.
  • the line switching discriminator SW receives a specific signal output from the mobile station AMV for line A and the mobile station BMV for line B, that is, one of the synchronization completion signals S1 and S11 at the input/output unit 21, and receives the signal. Based on the synchronization completion signal S1 or S11 received, the control unit 22 determines line section switching. That is, when the synchronization completion signal S11 is received, the control unit 22 determines that the line section A is switched to the line section B, and when the synchronization completion signal S1 is received, the line section B is changed to the line section A. Assume it has changed. By using the synchronization completion signals S1 and S11 as a trigger to determine line switching in this way, it is possible to accurately determine line switching.
  • the line section switching discriminator SW determines the line section switching, it outputs a switching signal S10 from the input/output unit 21 to each individual line section mobile station.
  • the switching signal S10 is input to the input/output units 5 and 15 of the mobile station AMV for line A and the mobile station BMV for line B, respectively.
  • the control unit 3 when the switching signal 10 is input to the input/output unit 5 of the mobile station AMV for line A, the control unit 3 stores Set the part 4 as the operating mobile station.
  • the control unit 13 cancels the setting as the operating mobile station in the storage unit 14 .
  • step ST0 the control unit (not shown) of the mobile station MV1 changes the settings of the operating mobile station stored in the storage unit of each line mobile station.
  • the control unit By passing from the mobile station for each line via the input/output unit, it is determined whether the current operation status of the mobile station is operation for line A or line B, and for the individual line that is the operating mobile station
  • the storage unit of the mobile station is made to store that it is the currently operating mobile station.
  • the mobile station AMV for line A If the mobile station currently in operation is the mobile station AMV for line A, then the mobile station AMV for line A enters the line A operation state in which the train radio system for line A is operated (step ST1). On the other hand, if the mobile station currently in operation is the mobile station BMV for line B, the mobile station BMV for line B enters the line B operation state in which the train radio system for line B is operated (step ST2).
  • step ST3 the controller 3 of the mobile station AMV for line A receives a switching signal from the line switching discriminator SW via the input/output unit 5. It is determined whether or not S10 has been input.
  • control unit 22 of the line switching discriminator SW controls an individual line section movement different from the currently operating mobile station stored in the storage unit 23 of the line switching discriminator SW, that is, the A line mobile station AMV.
  • a synchronization completion signal S11 is received from a station, ie, the mobile station BMV for line B through the input/output unit 21, it is determined that the line section has been switched. , to output the switching signal S10.
  • step ST3 when it is determined in step ST3 that the control unit 3 of the mobile station AMV for line A and the control unit 13 of the mobile station BMV for line B have received the switching signal S10 (Yes), the process proceeds to step ST5. . On the other hand, when it is determined that the switching signal S10 has not been input (No), the A line section operation state is maintained, and step ST3 is repeated.
  • a wait time is set as a predetermined time, and switching is not performed even if the switching signal S10 is input during this wait time. That is, for a predetermined time, the mobile station neither cancels its status as an operating mobile station nor becomes an operating mobile station.
  • the wait timer counter 6 of the mobile station AMV for line A has a function as a wait timer for setting a wait time and a counter function for counting the value of the wait timer. controlled.
  • step ST4 When it is determined in step ST4 that the switching signal S10 has been input, the wait timer counter 6 starts counting down.
  • step ST5 when the controller 3 refers to the value of the wait timer counter 6 and determines that the value X of the wait timer counter 6 is greater than 0 (Yes), that is, the countdown has not finished and the wait time is still in progress. If so, the process from step ST3 onwards is repeated.
  • step ST7 when it is determined that the value X of the wait timer counter 6 is 0 (No), that is, when it is determined that the wait time has elapsed after the countdown is completed, the process proceeds to step ST7.
  • the wait time is set in advance based on the length of the AB boundary zone, and can be set, for example, by dividing the length of the AB boundary zone by the operating speed of the train. can be set.
  • step ST7 the control unit 3 cancels the setting in the storage unit 4 that the mobile station AMV for line A is the operating mobile station, and the control unit 13 of the mobile station BMV for line B
  • the setting is stored in the storage unit 4 assuming that the mobile station BMV has newly become the operating mobile station.
  • the mobile station BMV for line B notifies the control unit (not shown) of the mobile station MV1 to the line section switching discriminator SW that it has been switched to the operating mobile station for line B.
  • the control unit of the mobile station MV1 causes the storage unit 14 of the mobile station BMV for line B to store that it is the currently operating mobile station, so that the mobile station BMV for line B operates line B. It is in operational state. In this way, since the switching signal S10 is used to switch the individual line section mobile station corresponding to the line section switching to the operating mobile station, the switching of the operating mobile station can be realized with a relatively simple configuration.
  • step ST9 the wait time for preventing repeated switching of the operating mobile station in the AB boundary zone is set as the value X of the wait timer counter 6.
  • steps ST2, ST4, ST6, ST8 and ST10 is executed in the B-line mobile station BMV.
  • steps ST7 and ST9 are the same as the processing in each section of the mobile station BMV for line B, so the description is omitted.
  • the mobile station MV1 of the first embodiment includes the mobile station AMV for line A, the mobile station BMV for line B, and the line switching discriminator SW. determines the line section switching, it outputs a switching signal S10 to each individual line section mobile station, thereby switching the individual line section mobile station corresponding to the line section switching to the operation mobile station.
  • a radio system switching operation makes it possible to seamlessly switch the radio system of the mobile station without lowering the operating efficiency of the train even in the line sections operated by different train radio systems.
  • FIG. 4 is a block diagram showing the configuration of the mobile station MV2 according to the second embodiment.
  • the mobile station MV2 has, in addition to the configuration of the mobile station MV1 shown in FIG. ing.
  • the basic operation of the mobile station MV2 is the same as that of the mobile station MV1 shown in FIG. Determine switching. After that, the switching signal S10 is output from the line section switching discriminator SW to each individual line section mobile station, and the switching signal S10 is also input to the storage transmission unit MT.
  • the memory transmission unit MT receives and stores necessary information and parameters from the mobile station for the individual line that is currently in operation, even after the line is switched.
  • the configuration and operation of the memory transmission unit MT will be described later in detail.
  • step ST0 the control section (not shown) of the mobile station MV2 reads the setting contents of the operating mobile station stored in the storage section of each line mobile station. By passing from the mobile station for each line via the input/output unit, it is determined whether the current operation status of the mobile station is operation for line A or line B, and for the individual line that is the operating mobile station The storage unit of the mobile station is made to store that it is the currently operating mobile station.
  • the mobile station AMV for line A If the mobile station currently in operation is the mobile station AMV for line A, then the mobile station AMV for line A enters the line A operation state in which the train radio system for line A is operated (step ST11). On the other hand, if the mobile station currently in operation is the mobile station BMV for line B, the mobile station BMV for line B enters the line B operation state in which the train radio system for line B is operated (step ST12).
  • step ST13 the control unit 3 of the mobile station AMV for line A continuously obtains necessary information and parameters even after line switching, that is, The continuation information after line switching is input to the memory transmission unit MT via the input/output unit 5 at any time, and is stored in the memory transmission unit MT.
  • step ST15 the controller 3 of the mobile station AMV for line A determines whether or not the switching signal S10 is received from the line switching discriminator SW via the input/output unit 5 or not.
  • the memory transmission unit MT has a control unit (not shown), and stores information and parameters input from the individual line mobile station in a storage area such as a register or memory of a CPU (Central Processing Unit) of the control unit. Then, each address area of the register or memory of the control unit CPU is sorted in advance for each type of information and parameters to be handed over after line section switching, and when a signal is input from the mobile station for individual line section, the information And depending on the type of parameter, the memory is retained by overwriting the value of the corresponding address.
  • a control unit not shown
  • the control unit 22 of the line switching discriminator SW updates the current operation stored in the storage unit 23 of the line switching discriminator SW.
  • a synchronization completion signal is received from a mobile station, here, a separate line section mobile station different from the line section mobile station AMV, it is determined that line section switching has occurred, and the mobile station AMV for line section AMV and the mobile station AMV for line section B are determined to be line section switching.
  • a switching signal S10 is output to the mobile station BMV.
  • step ST15 when it is determined in step ST15 that the control unit 3 of the mobile station AMV for line A and the control unit 13 of the mobile station BMV for line B have received the switching signal S10 (Yes), the process proceeds to step ST17.
  • step ST17 On the other hand, when it is determined that the switching signal S10 has not been input (No), the A line section operation state is maintained, and step ST13 is repeated.
  • a wait time is set to prevent repeated switching of the operating mobile station in the AB boundary zone, and switching is not performed during this wait time even if the switching signal S10 is input.
  • step ST17 when the controller 3 refers to the value of the wait timer counter 6 and determines that the value X of the wait timer counter 6 is greater than 0 (Yes), that is, the countdown has not finished and the wait time is still in progress. If so, the process from step ST13 onwards is repeated. On the other hand, when it is determined that the value X of the wait timer counter 6 is 0 (No), that is, when it is determined that the wait time has elapsed after the countdown is completed, the process proceeds to step ST19.
  • step ST19 the control unit 3 cancels the setting in the storage unit 4 that the mobile station AMV for line A is the operating mobile station, and the control unit 13 of the mobile station BMV for line B
  • the setting is stored in the storage unit 4 assuming that the mobile station BMV has newly become the operating mobile station.
  • the mobile station BMV for line B notifies the control section (not shown) of the mobile station MV2 to the line section switching identifier SW that it has been switched to the operating mobile station for line B.
  • the control unit of the mobile station MV2 causes the storage unit 14 of the mobile station BMV for line B to store that it is the currently operating mobile station, so that the mobile station BMV for line B operates line B. It becomes an operation state and shifts to step ST21.
  • step ST21 the control section of the mobile station MV2 causes the storage transmission section MT to output the post-switching continuation information held in the storage transmission section MT to the input/output section 15 of the mobile station BMV for line B. .
  • step ST23 the wait time for preventing repeated switching of the operating mobile station in the AB boundary zone is set as the value X of the wait timer counter 6.
  • steps ST12, ST14, ST16, ST18, ST20, ST22 and ST24 is executed in the mobile station BMV for line B, and the processing of steps ST12, ST14, ST16, ST18, T20, ST22 and ST24 are the same as the processes in which the above-described ST11, ST13, ST15, ST17, ST19, ST21, and ST23 are replaced with the processes in each section of the mobile station BMV for line B, so description thereof will be omitted.
  • the mobile station MV2 of the second embodiment includes the mobile station AMV for line A and the mobile station BMV for line B, the line switching discriminator SW, and the storage transmission unit MT.
  • the line section switching discriminator SW determines the line section switching
  • the individual line section mobile station corresponding to the line section switching is selected by outputting a switching signal S10 to each individual line section mobile station. Switch to the operating mobile station.
  • the memory transmission unit MT stores the post-switching continuation information that is necessary even after the line switching. It can be handed over to the ward mobile station.
  • Such wireless system switching operation makes it possible to seamlessly switch the wireless system of the mobile station without lowering the operating efficiency of the train, even in line sections operated by different systems.
  • each embodiment can be freely combined, and each embodiment can be appropriately modified or omitted.

Abstract

The present disclosure pertains to a mobile station. This mobile station is mounted on a train which moves over a range of first and second railroad sections having train wireless systems different from each other. The mobile station comprises: a first railroad-section mobile station; a second railroad-section mobile station; and a railroad-section switching discriminator. Upon reception of specific signals outputted from the first and second mobile stations, the railroad-section switching discriminator determines railroad section switching on the basis of the specific signals, inputs a railroad-section switching signal to the first and second mobile stations, and uses one of the first and second railroad-section mobile stations that corresponds to a railroad section after switching, as an operation mobile station for operating a train wireless system.

Description

移動局mobile station
　本開示は、列車無線システムの移動局に関し、特に無線方式を切り替えることができる移動局に関する。 The present disclosure relates to a mobile station of a train radio system, and particularly to a mobile station capable of switching radio systems.
　列車無線システムは、列車運行に際して運行中の各車両と中央指令室との間で通信を行うシステムである。列車無線システムでは、移動体である車両に搭載された移動局と地上側に設置された基地局との間で、空間波または漏洩同軸ケーブル（ＬＣＸ：Leaky Coaxial cable）など介して無線通信を行う。これまで、列車無線システムにおいては、移動体である車両が、異なる無線周波数を使用する線区に乗り入れる際に、周波数を自動的に切り替える方式として、例えば特許文献１に開示されるように、線区の境界線付近に設置した切替基地局から切替信号を送信し、移動局の周波数を変更する方式があった。 The train radio system is a system that communicates between each vehicle in operation and the central control room during train operation. In a train radio system, wireless communication is performed between a mobile station mounted on a vehicle, which is a mobile object, and a base station installed on the ground side via spatial waves or leaky coaxial cables (LCX). . Until now, in train radio systems, as a system for automatically switching frequencies when a vehicle, which is a mobile object, enters a railway section using a different radio frequency, a line system has been proposed, for example, as disclosed in Patent Document 1. There was a method in which a switching signal was sent from a switching base station installed near the boundary line of the ward to change the frequency of the mobile station.
特開２００２－３６８６７５号公報JP-A-2002-368675
　従来の線区間での切替方式においては、移動局が異なる線区間に乗り入れる際に、切替基地局が送信した切替信号受信時に周波数を切り替えていた。しかし、異なる鉄道事業者が管轄する線区に乗り入れる場合は、周波数の差異だけでなく、システム的に同期していないということも考えられ得る。そのような場合には従来の周波数のみを変更する方式では対応できない。また、各線区がシステム的に同期していない場合は、各線区を繋ぐ駅で列車が停止している間に、システムの切り替えを行っていた。この場合、各線区の境界が駅間にある状況においては、境界付近で車両を一時停止し、システムの切り替えを行う必要があり、運行効率を下げる要因となり得るとの問題点があった。 In the conventional line section switching method, when a mobile station enters a different line section, the frequency is switched when receiving the switching signal sent by the switching base station. However, in the case of running on lines under the jurisdiction of different railway operators, it is possible that not only the frequency is different but also the system is not synchronized. In such a case, the conventional method of changing only the frequency cannot cope with it. In addition, when each line section was not synchronized systematically, the system was switched while the train was stopped at the station connecting each line section. In this case, in a situation where the boundary between each line section is between stations, it is necessary to temporarily stop the vehicle near the boundary and switch the system, which may be a factor in lowering the operation efficiency.
　本開示は、上記のような問題点を解消するためなされたもので、システム的に同期していない線区間であっても、列車の運行効率を下げることなく、シームレスに移動局の無線方式を切り替えることが可能な移動局を提供することを目的とする。 The present disclosure has been made in order to solve the above-mentioned problems, and the wireless system of mobile stations can be seamlessly switched without lowering the operational efficiency of trains, even in line sections that are not systematically synchronized. It is an object of the present invention to provide a mobile station capable of switching.
　本開示に係る移動局は、互いに列車無線システムが異なる第１および第２の線区に渡って移動する列車に搭載された移動局であって、第１の線区用移動局と、第２の線区用移動局と、線区切替識別器と、を備え、前記線区切替識別器は、前記第１および第２の線区用移動局から出力される特定の信号を受信した場合に、前記特定の信号に基づいて線区切替を判断し、前記第１および第２の線区用移動局に線区切替信号を入力し、前記第１および第２の線区用移動局のうち、切り替え後の線区に対応した方を前記列車無線システムを運用する運用移動局とする。 A mobile station according to the present disclosure is a mobile station mounted on a train that moves over first and second railroad sections that have different train radio systems, and includes: a first railroad mobile station; and a line switching identifier, wherein when the line switching identifier receives a specific signal output from the first and second line mobile stations determining line section switching based on the specific signal, inputting a line section switching signal to the first and second line section mobile stations, and selecting one of the first and second line section mobile stations. , the one corresponding to the line section after switching is set as the operating mobile station that operates the train radio system.
　本開示に係る移動局によれば、第１および第２の線区用移動局から出力される特定の信号の受信をトリガとして線区切替を判断することで、異なる列車無線システムによって運用されている線区間においても、列車の運行効率を下げることなく、シームレスに移動局の無線方式を切り替えることが可能となる。 According to the mobile station according to the present disclosure, by determining line switching using reception of specific signals output from the first and second line mobile stations as a trigger, it is possible to operate by different train radio systems. It is possible to seamlessly switch the radio system of the mobile station without lowering the operating efficiency of the train even in the line section where the train is located.
実施の形態１の移動局を使用した列車無線システムの構成を示す概念図である。1 is a conceptual diagram showing the configuration of a train radio system using mobile stations according to Embodiment 1; FIG. 実施の形態１の移動局の構成を示すブロック図である。2 is a block diagram showing the configuration of a mobile station according to Embodiment 1; FIG. 実施の形態１の移動局における無線方式を切り替える動作を説明するフローチャートである。4 is a flowchart for explaining an operation of switching a radio system in the mobile station of Embodiment 1; 実施の形態２の移動局の構成を示すブロック図である。FIG. 4 is a block diagram showing the configuration of a mobile station according to Embodiment 2; FIG. 実施の形態２の移動局における無線方式を切り替える動作を説明するフローチャートである。FIG. 12 is a flowchart for explaining an operation of switching a radio system in a mobile station according to Embodiment 2; FIG.
　＜実施の形態１＞
　図１は、実施の形態１の移動局を使用した列車無線システムの構成を示す概念図であり、ＬＣＸを無線アンテナとする列車無線システムを示している。また、本列車無線システムでは、管轄する主体が異なる線区である第１の線区すなわちＡ線区、および第２の線区すなわちＢ線区に列車ＴＲが乗り入れる構成となっている。 <Embodiment 1>
FIG. 1 is a conceptual diagram showing the configuration of a train radio system using mobile stations according to Embodiment 1, showing a train radio system using an LCX as a radio antenna. Further, in this train radio system, the train TR runs on a first line section, that is, A line section, and a second line section, that is, B line section, which are controlled by different entities.
　ここで、Ａ線区およびＢ線区は列車無線システムとして同期しておらず、また使用する無線の周波数も異なるものとする。Ａ線区およびＢ線区のそれぞれの同軸ケーブルＡＸおよびＢＸの終端は、それぞれ乗り入れ先の線区と重なるように敷設し、Ａ線区およびＢ線区の無線電波を双方とも受信できるエリアであるＡＢ境界ゾーンを確保している。ＡＢ境界ゾーンにおいて列車ＴＲに搭載される移動局ＭＶ１は、Ａ線区において使用する周波数ＦａとＢ線区において使用する周波数Ｆｂの無線電波をそれぞれ受信することになるが、それぞれ互いに干渉しない異なる周波数となっている。 Here, it is assumed that Line A and Line B are not synchronized as a train radio system, and that the radio frequencies used are also different. The ends of the coaxial cables AX and BX of the A line section and the B line section, respectively, are laid so as to overlap with the line section of the destination, and are areas where radio waves from both the A line section and the B line section can be received. It secures the AB boundary zone. The mobile station MV1 mounted on the train TR in the AB boundary zone receives radio waves of frequency Fa used in section A and frequency Fb used in section B, but different frequencies that do not interfere with each other. It has become.
　図２は、実施の形態１の移動局ＭＶ１の構成を示すブロック図である。図２に示されるように、移動局ＭＶ１は、第１の線区用移動局すなわちＡ線区用移動局ＡＭＶおよび、第２の線区用移動局すなわちＢ線区用移動局ＢＭＶと、線区切替識別器ＳＷとを備えている。なお、Ａ線区用移動局ＡＭＶおよびＢ線区用移動局ＢＭＶを個別線区用移動局と総称する。 FIG. 2 is a block diagram showing the configuration of the mobile station MV1 according to the first embodiment. As shown in FIG. 2, the mobile station MV1 includes a first line mobile station, that is, a line A mobile station AMV, a second line line mobile station, that is, a line B mobile station BMV, and a line and a section switching discriminator SW. The mobile station AMV for line A and the mobile station BMV for line B are collectively referred to as individual line mobile stations.
　Ａ線区用移動局ＡＭＶは、周波数ＦａのＡ線区の無線信号ＡＲＳを送受信可能に構成され、Ｂ線区用移動局ＢＭＶは、周波数ＦｂのＢ線区の無線信号ＢＲＳを送受信可能に構成されている。なお、実際に列車無線システムを運用する移動局、すなわち運用移動局は、Ａ線区用移動局ＡＭＶおよびＢ線区用移動局ＢＭＶのどちらか一方のみである。 The mobile station AMV for line A is configured to be able to transmit and receive a radio signal ARS for line A of frequency Fa, and the mobile station BMV for line B is configured to be capable of transmitting and receiving a radio signal BRS for line B of frequency Fb. It is The mobile station that actually operates the train radio system, that is, the operating mobile station is only one of the mobile station AMV for line A and the mobile station BMV for line B.
　図２に示されるように、Ａ線区用移動局ＡＭＶは、無線送受信部１、復調部２、制御部３、記憶部４、出入力部５およびウェイトタイマカウンタ６を有している。また、Ｂ線区用移動局ＢＭＶは、無線送受信部１１、復調部１２、制御部１３、記憶部１４、出入力部１５およびウェイトタイマカウンタ１６を有している。 As shown in FIG. 2, the mobile station AMV for line A has a radio transmission/reception section 1, a demodulation section 2, a control section 3, a storage section 4, an input/output section 5 and a wait timer counter 6. The mobile station BMV for line B has a radio transmission/reception section 11 , a demodulation section 12 , a control section 13 , a storage section 14 , an input/output section 15 and a wait timer counter 16 .
　各個別線区用移動局は、それぞれの対応する線区において、ＬＣＸを介して無線信号を送受信することができる。すなわち、Ａ線区用移動局ＡＭＶを例に採れば、Ａ線区において受信した無線信号ＡＲＳは復調部２おいて復調される。復調された無線信号ＡＲＳに含まれる同期ワードを規定回数検出した制御部３は、Ａ線区の第１の基地局すなわち基地局ＡＳと同期し、無線送受信部１において無線信号ＡＲＳの送信が可能になる。その際、同期が完了した制御部３から線区切替識別器ＳＷに対し、出入力部５を介して同期完了信号Ｓ１を出力する。以上の動作は、Ｂ線区における第２の基地局すなわち基地局ＢＳとＢ線区用移動局ＢＭＶにおいても同様である。 Each individual line section mobile station can transmit and receive radio signals via the LCX on each corresponding line section. That is, taking the A-line mobile station AMV as an example, the radio signal ARS received in the A-line section is demodulated by the demodulator 2 . After detecting the synchronization word contained in the demodulated radio signal ARS a specified number of times, the control unit 3 synchronizes with the first base station on the A line, that is, the base station AS, and the radio transmission/reception unit 1 can transmit the radio signal ARS. become. At this time, a synchronization completion signal S1 is output from the control unit 3, which has completed synchronization, to the line switching discriminator SW via the input/output unit 5. FIG. The above operation is the same for the second base station in the B line, that is, the base station BS and the B line mobile station BMV.
　ここで、同期ワードとは、移動局のフレームの送信タイミングを決めるために使用されるパターンであり、基地局側から送信される各フレームの中に複数種のパターンが格納されており、このパターンを検出することで基地局と同期し、無線信号の送信が可能となる。 Here, the synchronization word is a pattern used to determine the transmission timing of the frame of the mobile station. Each frame transmitted from the base station contains a plurality of patterns. can be detected to synchronize with the base station and transmit radio signals.
　線区切替識別器ＳＷは、Ａ線区用移動局ＡＭＶおよびＢ線区用移動局ＢＭＶから出力される特定の信号、すなわち同期完了信号Ｓ１およびＳ１１の一方を出入力部２１において受信し、受信した同期完了信号Ｓ１またはＳ１１に基づいて、制御部２２において線区切替を判断する。すなわち、制御部２２は、同期完了信号Ｓ１１を受信した場合には、Ａ線区からＢ線区に切り替わったと判断し、同期完了信号Ｓ１を受信した場合には、Ｂ線区からＡ線区に切り替わったと判断する。このように同期完了信号Ｓ１およびＳ１１をトリガとして線区切替を判断することで、線区切替を精度良く判断することができる。 The line switching discriminator SW receives a specific signal output from the mobile station AMV for line A and the mobile station BMV for line B, that is, one of the synchronization completion signals S1 and S11 at the input/output unit 21, and receives the signal. Based on the synchronization completion signal S1 or S11 received, the control unit 22 determines line section switching. That is, when the synchronization completion signal S11 is received, the control unit 22 determines that the line section A is switched to the line section B, and when the synchronization completion signal S1 is received, the line section B is changed to the line section A. Assume it has changed. By using the synchronization completion signals S1 and S11 as a trigger to determine line switching in this way, it is possible to accurately determine line switching.
　線区切替識別器ＳＷは、線区の切り替えを判断した場合、それぞれの個別線区用移動局に対し、出入力部２１から切替信号Ｓ１０を出力する。切替信号Ｓ１０は、Ａ線区用移動局ＡＭＶおよびＢ線区用移動局ＢＭＶの出入力部５および１５にそれぞれ入力される。 When the line section switching discriminator SW determines the line section switching, it outputs a switching signal S10 from the input/output unit 21 to each individual line section mobile station. The switching signal S10 is input to the input/output units 5 and 15 of the mobile station AMV for line A and the mobile station BMV for line B, respectively.
　ここで、Ａ線区用移動局ＡＭＶが運用移動局ではない場合を例に採ると、Ａ線区用移動局ＡＭＶの出入力部５に切替信号１０が入力されると、制御部３は記憶部４に運用移動局としての設定を行う。一方、運用移動局であったＢ線区用移動局ＢＭＶの出入力部１５に切替信号Ｓ１０が入力されると、制御部１３は記憶部１４に運用移動局としての設定を解除する。 Here, taking as an example the case where the mobile station AMV for line A is not the operating mobile station, when the switching signal 10 is input to the input/output unit 5 of the mobile station AMV for line A, the control unit 3 stores Set the part 4 as the operating mobile station. On the other hand, when the switching signal S10 is input to the input/output unit 15 of the mobile station BMV for line B, which was the operating mobile station, the control unit 13 cancels the setting as the operating mobile station in the storage unit 14 .
　次に、図２を参照しつつ、図３に示すフローチャートを用いて、実施の形態１における移動局ＭＶ１において無線方式を切り替える動作について説明する。 Next, the operation of switching the radio system in the mobile station MV1 according to Embodiment 1 will be described using the flowchart shown in FIG. 3 while referring to FIG.
　図３に示されるように、切り替え動作を開始すると、まず、ステップＳＴ０において、移動局ＭＶ１の図示されない制御部が、各線区用移動局の記憶部に記憶されている運用移動局の設定内容を出入力部を介して各線区用移動局から受け渡されることで、移動局の現運用状態がＡ線区運用かＢ線区運用かを判断し、運用移動局となっている個別線区用移動局の記憶部に、現運用移動局であることを記憶させる。 As shown in FIG. 3, when the switching operation is started, first, in step ST0, the control unit (not shown) of the mobile station MV1 changes the settings of the operating mobile station stored in the storage unit of each line mobile station. By passing from the mobile station for each line via the input/output unit, it is determined whether the current operation status of the mobile station is operation for line A or line B, and for the individual line that is the operating mobile station The storage unit of the mobile station is made to store that it is the currently operating mobile station.
　現運用移動局がＡ線区用移動局ＡＭＶであれば、Ａ線区用移動局ＡＭＶがＡ線区の列車無線システムを運用するＡ線区運用状態となる（ステップＳＴ１）。一方、現運用移動局がＢ線区用移動局ＢＭＶであれば、Ｂ線区用移動局ＢＭＶがＢ線区の列車無線システムを運用するＢ線区運用状態となる（ステップＳＴ２）。 If the mobile station currently in operation is the mobile station AMV for line A, then the mobile station AMV for line A enters the line A operation state in which the train radio system for line A is operated (step ST1). On the other hand, if the mobile station currently in operation is the mobile station BMV for line B, the mobile station BMV for line B enters the line B operation state in which the train radio system for line B is operated (step ST2).
　以下では、現運用移動局がＡ線区用移動局ＡＭＶとなっている場合に、運用移動局がＢ線区用移動局ＢＭＶに切り替わる場合について説明する。 In the following, a description will be given of a case where the mobile station currently in operation is the mobile station AMV for line A and the mobile station in operation is switched to mobile station BMV for line B.
　現運用移動局がＡ線区用移動局ＡＭＶの場合、ステップＳＴ３に移行し、Ａ線区用移動局ＡＭＶの制御部３が、出入力部５を介して線区切替識別器ＳＷから切替信号Ｓ１０が入力された否かを判断する。 If the mobile station currently in operation is the mobile station AMV for line A, the process proceeds to step ST3, and the controller 3 of the mobile station AMV for line A receives a switching signal from the line switching discriminator SW via the input/output unit 5. It is determined whether or not S10 has been input.
　ここで、線区切替識別器ＳＷの制御部２２は、線区切替識別器ＳＷの記憶部２３に記憶している現運用移動局、すなわちＡ線区用移動局ＡＭＶとは異なる個別線区移動局、すなわちＢ線区用移動局ＢＭＶから出入力部２１を介して同期完了信号Ｓ１１を受信すると、線区切替と判断し、Ａ線区用移動局ＡＭＶおよびＢ線区用移動局ＢＭＶに対し、切替信号Ｓ１０を出力する。 Here, the control unit 22 of the line switching discriminator SW controls an individual line section movement different from the currently operating mobile station stored in the storage unit 23 of the line switching discriminator SW, that is, the A line mobile station AMV. When a synchronization completion signal S11 is received from a station, ie, the mobile station BMV for line B through the input/output unit 21, it is determined that the line section has been switched. , to output the switching signal S10.
　このため、ステップＳＴ３においてＡ線区用移動局ＡＭＶの制御部３およびＢ線区用移動局ＢＭＶの制御部１３がそれぞれ切替信号Ｓ１０を入力された（Ｙｅｓ）と判定すると、ステップＳＴ５に移行する。一方、切替信号Ｓ１０が入力されていない（Ｎｏ）と判定した場合は、Ａ線区運用状態を維持し、ステップＳＴ３を繰り返す。 Therefore, when it is determined in step ST3 that the control unit 3 of the mobile station AMV for line A and the control unit 13 of the mobile station BMV for line B have received the switching signal S10 (Yes), the process proceeds to step ST5. . On the other hand, when it is determined that the switching signal S10 has not been input (No), the A line section operation state is maintained, and step ST3 is repeated.
　ここで、ＡＢ境界ゾーンにおいて運用移動局の切り替えが繰り返されることを防ぐために、予め定められた時間としてウェイト時間が設定されており、このウェイト時間中は切替信号Ｓ１０が入力されても切り替えしない。すなわち、予め定められた時間は、運用移動局であることを解除することも、運用移動局となることもしない。 Here, in order to prevent repeated switching of the operating mobile station in the AB boundary zone, a wait time is set as a predetermined time, and switching is not performed even if the switching signal S10 is input during this wait time. That is, for a predetermined time, the mobile station neither cancels its status as an operating mobile station nor becomes an operating mobile station.
　Ａ線区用移動局ＡＭＶのウェイトタイマカウンタ６は、ウェイト時間を設定するウェイトタイマとしての機能と、ウェイトタイマの値をカウントするカウンタとしての機能を有し、制御部３によってタイマセットおよびカウントが制御される。 The wait timer counter 6 of the mobile station AMV for line A has a function as a wait timer for setting a wait time and a counter function for counting the value of the wait timer. controlled.
　ステップＳＴ４で切替信号Ｓ１０が入力されたと判定されるとウェイトタイマカウンタ６がカウントダウンを開始する。ステップＳＴ５では、制御部３がウェイトタイマカウンタ６の値を参照し、ウェイトタイマカウンタ６の値Ｘが０より大きい（Ｙｅｓ）と判断した場合、すなわち、カウントダウンが終わっておらずウェイト時間中であると判断した場合、ステップＳＴ３以下の処理を繰り返す。一方、ウェイトタイマカウンタ６の値Ｘが０である（Ｎｏ）と判断した場合、すなわち、カウントダウンが終わってウェイト時間が経過したと判断した場合はステップＳＴ７に移行する。 When it is determined in step ST4 that the switching signal S10 has been input, the wait timer counter 6 starts counting down. In step ST5, when the controller 3 refers to the value of the wait timer counter 6 and determines that the value X of the wait timer counter 6 is greater than 0 (Yes), that is, the countdown has not finished and the wait time is still in progress. If so, the process from step ST3 onwards is repeated. On the other hand, when it is determined that the value X of the wait timer counter 6 is 0 (No), that is, when it is determined that the wait time has elapsed after the countdown is completed, the process proceeds to step ST7.
　なお、ウェイト時間は、ＡＢ境界ゾーンの長さに基づいて予め設定され、例えば、ＡＢ境界ゾーンの長さを列車の運行速度で除算するなどして設定することができるので、現実的なウェイト時間の設定が可能となる。 Note that the wait time is set in advance based on the length of the AB boundary zone, and can be set, for example, by dividing the length of the AB boundary zone by the operating speed of the train. can be set.
　ステップＳＴ７では、制御部３は、Ａ線区用移動局ＡＭＶが運用移動局であるとの記憶部４の設定を解除し、Ｂ線区用移動局ＢＭＶの制御部１３は、Ｂ線区用移動局ＢＭＶが新たに運用移動局になったとして記憶部４に設定を記憶させる。また、Ｂ線区用移動局ＢＭＶは、線区切替識別器ＳＷに、自身がＢ線区の運用移動局に切り替わったことを移動局ＭＶ１の図示されない制御部に通知する。移動局ＭＶ１の制御部は、Ｂ線区用移動局ＢＭＶの記憶部１４に、現運用移動局であることを記憶させることでＢ線区用移動局ＢＭＶがＢ線区を運用するＢ線区運用状態となる。このように、切替信号Ｓ１０により線区の切り替えに対応した個別線区用移動局を運用移動局に切り替えるので、比較的簡単な構成で運用移動局の切り替えを実現できる。 In step ST7, the control unit 3 cancels the setting in the storage unit 4 that the mobile station AMV for line A is the operating mobile station, and the control unit 13 of the mobile station BMV for line B The setting is stored in the storage unit 4 assuming that the mobile station BMV has newly become the operating mobile station. In addition, the mobile station BMV for line B notifies the control unit (not shown) of the mobile station MV1 to the line section switching discriminator SW that it has been switched to the operating mobile station for line B. The control unit of the mobile station MV1 causes the storage unit 14 of the mobile station BMV for line B to store that it is the currently operating mobile station, so that the mobile station BMV for line B operates line B. It is in operational state. In this way, since the switching signal S10 is used to switch the individual line section mobile station corresponding to the line section switching to the operating mobile station, the switching of the operating mobile station can be realized with a relatively simple configuration.
　その後、ステップＳＴ９に移行し、ＡＢ境界ゾーンにおいて運用移動局の切り替えが繰り返されることを防ぐためのウェイト時間を、ウェイトタイマカウンタ６の値Ｘとして設定する。 After that, the process proceeds to step ST9, and the wait time for preventing repeated switching of the operating mobile station in the AB boundary zone is set as the value X of the wait timer counter 6.
　その後は、Ｂ線区用移動局ＢＭＶにおいて、ステップＳＴ２、ＳＴ４、ＳＴ６、ＳＴ８およびＳＴ１０の処理が実行されるが、ステップＳＴ２、ＳＴ４、ＳＴ６、ＳＴ８およびＳＴ１０は、それぞれ上述したＳＴ１、ＳＴ３、ＳＴ５、ＳＴ７およびＳＴ９の処理を、Ｂ線区用移動局ＢＭＶの各部での処理に置き換えた処理と同様であるため、説明は省く。 After that, the processing of steps ST2, ST4, ST6, ST8 and ST10 is executed in the B-line mobile station BMV. , ST7 and ST9 are the same as the processing in each section of the mobile station BMV for line B, so the description is omitted.
　以上説明したように、本実施の形態１の移動局ＭＶ１は、Ａ線区用移動局ＡＭＶおよびＢ線区用移動局ＢＭＶと、線区切替識別器ＳＷとを備え、線区切替識別器ＳＷが線区の切り替えを判断した場合、それぞれの個別線区用移動局に対して切替信号Ｓ１０を出力することで、線区の切り替えに対応した個別線区用移動局を運用移動局に切り替える。このような無線方式の切り替え動作により、異なる列車無線システムによって運用されている線区間においても、列車の運行効率を下げることなく、シームレスに移動局の無線方式を切り替えることが可能となる。 As described above, the mobile station MV1 of the first embodiment includes the mobile station AMV for line A, the mobile station BMV for line B, and the line switching discriminator SW. determines the line section switching, it outputs a switching signal S10 to each individual line section mobile station, thereby switching the individual line section mobile station corresponding to the line section switching to the operation mobile station. Such a radio system switching operation makes it possible to seamlessly switch the radio system of the mobile station without lowering the operating efficiency of the train even in the line sections operated by different train radio systems.
　＜実施の形態２＞
　列車無線システムの運行上、管轄の異なる線区間であっても安全に関わる情報などは線区切替前後で継続して無線通信を続ける必要がある。実施の形態２の移動局においては、各鉄道事業者の取り決めに基づいて、線区切替後も継続して送受を行う必要性があると判断された情報に関して、各個別線区用移動局内において受け渡す機能を備えている。 <Embodiment 2>
Due to the operation of the train radio system, it is necessary to continue radio communication before and after the line switching, even if it is a line section under different jurisdiction. In the mobile station of Embodiment 2, regarding information determined to be necessary to be continuously transmitted and received even after line switching, based on the agreements of each railway operator, within the mobile station for each individual line, It has the ability to deliver.
　図４は、実施の形態２の移動局ＭＶ２の構成を示すブロック図である。図４に示されるように、移動局ＭＶ２は、図２に示した移動局ＭＶ１の構成に加えて、線区切替識別器ＳＷから出力される切替信号Ｓ１０が入力される記憶伝送部ＭＴを備えている。その他、図４においては、図２を用いて説明した移動局ＭＶ１と同一の構成については同一の符号を付し、重複する説明は省略する。 FIG. 4 is a block diagram showing the configuration of the mobile station MV2 according to the second embodiment. As shown in FIG. 4, the mobile station MV2 has, in addition to the configuration of the mobile station MV1 shown in FIG. ing. In addition, in FIG. 4, the same components as those of the mobile station MV1 explained with reference to FIG.
　移動局ＭＶ２の基本的な動作は、図２に示した移動局ＭＶ１の動作と同様であり、線区切替識別器ＳＷが各個別線区用移動局から入力された情報に基づいて、線区切替を判断する。その後、線区切替識別器ＳＷから各個別線区用移動局に対して切替信号Ｓ１０を出力すると共に、切替信号Ｓ１０は記憶伝送部ＭＴにも入力される。 The basic operation of the mobile station MV2 is the same as that of the mobile station MV1 shown in FIG. Determine switching. After that, the switching signal S10 is output from the line section switching discriminator SW to each individual line section mobile station, and the switching signal S10 is also input to the storage transmission unit MT.
　記憶伝送部ＭＴは、現在の運用移動局となっている個別線区用移動局から随時に線区切替後も継続して必要な情報およびパラメータなどを受け取り、格納している。記憶伝送部ＭＴの構成および動作については、後に詳細に説明する。 The memory transmission unit MT receives and stores necessary information and parameters from the mobile station for the individual line that is currently in operation, even after the line is switched. The configuration and operation of the memory transmission unit MT will be described later in detail.
　次に、図４を参照しつつ、図５に示すフローチャートを用いて、実施の形態２における移動局ＭＶ２において無線方式を切り替える動作について説明する。 Next, the operation of switching the radio system in the mobile station MV2 according to Embodiment 2 will be described using the flowchart shown in FIG. 5 while referring to FIG.
　図５に示されるように、切り替え動作を開始すると、まず、ステップＳＴ０において、移動局ＭＶ２の図示されない制御部が、各線区用移動局の記憶部に記憶されている運用移動局の設定内容を出入力部を介して各線区用移動局から受け渡されることで、移動局の現運用状態がＡ線区運用かＢ線区運用かを判断し、運用移動局となっている個別線区用移動局の記憶部に、現運用移動局であることを記憶させる。 As shown in FIG. 5, when the switching operation is started, first, in step ST0, the control section (not shown) of the mobile station MV2 reads the setting contents of the operating mobile station stored in the storage section of each line mobile station. By passing from the mobile station for each line via the input/output unit, it is determined whether the current operation status of the mobile station is operation for line A or line B, and for the individual line that is the operating mobile station The storage unit of the mobile station is made to store that it is the currently operating mobile station.
　現運用移動局がＡ線区用移動局ＡＭＶであれば、Ａ線区用移動局ＡＭＶがＡ線区の列車無線システムを運用するＡ線区運用状態となる（ステップＳＴ１１）。一方、現運用移動局がＢ線区用移動局ＢＭＶであれば、Ｂ線区用移動局ＢＭＶがＢ線区の列車無線システムを運用するＢ線区運用状態となる（ステップＳＴ１２）。 If the mobile station currently in operation is the mobile station AMV for line A, then the mobile station AMV for line A enters the line A operation state in which the train radio system for line A is operated (step ST11). On the other hand, if the mobile station currently in operation is the mobile station BMV for line B, the mobile station BMV for line B enters the line B operation state in which the train radio system for line B is operated (step ST12).
　以下では、現運用移動局がＡ線区用移動局ＡＭＶとなっている場合に、運用移動局がＢ線区用移動局ＢＭＶに切り替わる場合について説明する。 In the following, a description will be given of a case where the mobile station currently in operation is the mobile station AMV for line A and the mobile station in operation is switched to mobile station BMV for line B.
　現運用移動局がＡ線区用移動局ＡＭＶの場合、ステップＳＴ１３に移行し、Ａ線区用移動局ＡＭＶの制御部３が、線区切替後も継続して必要な情報およびパラメータなど、すなわち線区切替後継続情報を出入力部５を介して記憶伝送部ＭＴに対し随時に入力し、記憶伝送部ＭＴに記憶させている。その後、ステップＳＴ１５に移行し、Ａ線区用移動局ＡＭＶの制御部３が、出入力部５を介して線区切替識別器ＳＷから切替信号Ｓ１０を受け取ったか否かを判断する。 If the currently operating mobile station is the mobile station AMV for line A, the process proceeds to step ST13, and the control unit 3 of the mobile station AMV for line A continuously obtains necessary information and parameters even after line switching, that is, The continuation information after line switching is input to the memory transmission unit MT via the input/output unit 5 at any time, and is stored in the memory transmission unit MT. After that, the process proceeds to step ST15, and the controller 3 of the mobile station AMV for line A determines whether or not the switching signal S10 is received from the line switching discriminator SW via the input/output unit 5 or not.
　ここで、記憶伝送部ＭＴでの情報およびパラメータの格納の方法の一例を説明する。記憶伝送部ＭＴは、図示されない制御部を有し、制御部のＣＰＵ（Central Processing Unit）のレジスタまたはメモリなどの記憶領域に個別線区用移動局から入力される情報およびパラメータを格納する。そして、当該制御部ＣＰＵのレジスタまたはメモリなどの各アドレスの領域を、線区切替後に引き継ぐ情報およびパラメータの種別ごとに予め振り分け、個別線区用移動局から信号の入力があった際に、情報およびパラメータの種別に応じて、該当するアドレスの値を上書きすることで記憶を保持する。一方、線区切替完了後に、情報およびパラメータを新たに運用移動局となった個別線区移動局に伝送する際は、その時点で記憶伝送部ＭＴ内の制御部のＣＰＵレジスタまたはメモリに格納されている値を読み出し、送信する。 Here, an example of a method of storing information and parameters in the memory transmission unit MT will be described. The memory transmission unit MT has a control unit (not shown), and stores information and parameters input from the individual line mobile station in a storage area such as a register or memory of a CPU (Central Processing Unit) of the control unit. Then, each address area of the register or memory of the control unit CPU is sorted in advance for each type of information and parameters to be handed over after line section switching, and when a signal is input from the mobile station for individual line section, the information And depending on the type of parameter, the memory is retained by overwriting the value of the corresponding address. On the other hand, when information and parameters are transmitted to the individual line section mobile station that has newly become the operating mobile station after the line section switching is completed, the information and parameters are stored in the CPU register or memory of the control section in the storage transmission section MT at that time. read and send the value
　線区切替識別器ＳＷの制御部２２は、Ｂ線区用移動局ＢＭＶから出入力部２１において同期完了信号Ｓ１１を受信すると、線区切替識別器ＳＷの記憶部２３に記憶している現運用移動局、ここでは、Ａ線区用移動局ＡＭＶとは異なる個別線区移動局から同期完了信号を受信した場合は、線区切替と判断し、Ａ線区用移動局ＡＭＶ、Ｂ線区用移動局ＢＭＶに対し、切替信号Ｓ１０を出力する。 When the input/output unit 21 receives the synchronization completion signal S11 from the mobile station BMV for line B, the control unit 22 of the line switching discriminator SW updates the current operation stored in the storage unit 23 of the line switching discriminator SW. When a synchronization completion signal is received from a mobile station, here, a separate line section mobile station different from the line section mobile station AMV, it is determined that line section switching has occurred, and the mobile station AMV for line section AMV and the mobile station AMV for line section B are determined to be line section switching. A switching signal S10 is output to the mobile station BMV.
　このため、ステップＳＴ１５においてＡ線区用移動局ＡＭＶの制御部３およびＢ線区用移動局ＢＭＶの制御部１３がそれぞれ切替信号Ｓ１０を入力された（Ｙｅｓ）と判定すると、ステップＳＴ１７に移行する。一方、切替信号Ｓ１０が入力されていない（Ｎｏ）と判定した場合は、Ａ線区運用状態を維持し、ステップＳＴ１３を繰り返す。 Therefore, when it is determined in step ST15 that the control unit 3 of the mobile station AMV for line A and the control unit 13 of the mobile station BMV for line B have received the switching signal S10 (Yes), the process proceeds to step ST17. . On the other hand, when it is determined that the switching signal S10 has not been input (No), the A line section operation state is maintained, and step ST13 is repeated.
　ここで、ＡＢ境界ゾーンにおいて運用移動局の切り替えが繰り返されることを防ぐためにウェイト時間が設定されており、このウェイト時間中は切替信号Ｓ１０が入力されても切り替えしない。 Here, a wait time is set to prevent repeated switching of the operating mobile station in the AB boundary zone, and switching is not performed during this wait time even if the switching signal S10 is input.
　ステップＳＴ１７では、制御部３がウェイトタイマカウンタ６の値を参照し、ウェイトタイマカウンタ６の値Ｘが０より大きい（Ｙｅｓ）と判断した場合、すなわち、カウントダウンが終わっておらずウェイト時間中であると判断した場合、ステップＳＴ１３以下の処理を繰り返す。一方、ウェイトタイマカウンタ６の値Ｘが０である（Ｎｏ）と判断した場合、すなわち、カウントダウンが終わってウェイト時間が経過したと判断した場合はステップＳＴ１９に移行する。 In step ST17, when the controller 3 refers to the value of the wait timer counter 6 and determines that the value X of the wait timer counter 6 is greater than 0 (Yes), that is, the countdown has not finished and the wait time is still in progress. If so, the process from step ST13 onwards is repeated. On the other hand, when it is determined that the value X of the wait timer counter 6 is 0 (No), that is, when it is determined that the wait time has elapsed after the countdown is completed, the process proceeds to step ST19.
　ステップＳＴ１９では、制御部３は、Ａ線区用移動局ＡＭＶが運用移動局であるとの記憶部４の設定を解除し、Ｂ線区用移動局ＢＭＶの制御部１３は、Ｂ線区用移動局ＢＭＶが新たに運用移動局になったとして記憶部４に設定を記憶させる。また、Ｂ線区用移動局ＢＭＶは、線区切替識別器ＳＷに、自身がＢ線区の運用移動局に切り替わったことを移動局ＭＶ２の図示されない制御部に通知する。移動局ＭＶ２の制御部は、Ｂ線区用移動局ＢＭＶの記憶部１４に、現運用移動局であることを記憶させることでＢ線区用移動局ＢＭＶがＢ線区を運用するＢ線区運用状態となり、ステップＳＴ２１に移行する。 In step ST19, the control unit 3 cancels the setting in the storage unit 4 that the mobile station AMV for line A is the operating mobile station, and the control unit 13 of the mobile station BMV for line B The setting is stored in the storage unit 4 assuming that the mobile station BMV has newly become the operating mobile station. In addition, the mobile station BMV for line B notifies the control section (not shown) of the mobile station MV2 to the line section switching identifier SW that it has been switched to the operating mobile station for line B. The control unit of the mobile station MV2 causes the storage unit 14 of the mobile station BMV for line B to store that it is the currently operating mobile station, so that the mobile station BMV for line B operates line B. It becomes an operation state and shifts to step ST21.
　ステップＳＴ２１では、移動局ＭＶ２の制御部は、記憶伝送部ＭＴからＢ線区用移動局ＢＭＶの出入力部１５に対し、記憶伝送部ＭＴで保持されていた線区切替後継続情報を出力させる。 In step ST21, the control section of the mobile station MV2 causes the storage transmission section MT to output the post-switching continuation information held in the storage transmission section MT to the input/output section 15 of the mobile station BMV for line B. .
　その後、ステップＳＴ２３に移行し、ＡＢ境界ゾーンにおいて運用移動局の切り替えが繰り返されることを防ぐためのウェイト時間を、ウェイトタイマカウンタ６の値Ｘとして設定する。 After that, the process proceeds to step ST23, and the wait time for preventing repeated switching of the operating mobile station in the AB boundary zone is set as the value X of the wait timer counter 6.
　その後は、Ｂ線区用移動局ＢＭＶにおいて、ステップＳＴ１２、ＳＴ１４、ＳＴ１６、ＳＴ１８、ＳＴ２０、ＳＴ２２およびＳＴ２４の処理が実行されるが、ステップＳＴ１２、ＳＴ１４、ＳＴ１６、ＳＴ１８、Ｔ２０、ＳＴ２２およびＳＴ２４の処理は、それぞれ上述したＳＴ１１、ＳＴ１３、ＳＴ１５、ＳＴ１７、ＳＴ１９、ＳＴ２１およびＳＴ２３の処理を、Ｂ線区用移動局ＢＭＶの各部での処理に置き換えた処理と同様であるため、説明は省く。 After that, the processing of steps ST12, ST14, ST16, ST18, ST20, ST22 and ST24 is executed in the mobile station BMV for line B, and the processing of steps ST12, ST14, ST16, ST18, T20, ST22 and ST24 are the same as the processes in which the above-described ST11, ST13, ST15, ST17, ST19, ST21, and ST23 are replaced with the processes in each section of the mobile station BMV for line B, so description thereof will be omitted.
　以上説明したように、本実施の形態２の移動局ＭＶ２は、Ａ線区用移動局ＡＭＶおよびＢ線区用移動局ＢＭＶと、線区切替識別器ＳＷと、記憶伝送部ＭＴとを備え、線区切替識別器ＳＷが線区の切り替えを判断した場合、それぞれの個別線区用移動局に対して切替信号Ｓ１０を出力することで、線区の切り替えに対応した個別線区用移動局を運用移動局に切り替える。また、記憶伝送部ＭＴには、線区切替後も継続して必要な線区切替後継続情報が格納されており、線区の切り替えに際しては、線区切替後継続情報を切替後の個別線区用移動局に引き継ぐことができる。このような無線方式の切り替え動作により、異なるシステムによって運用されている線区間においても、列車の運行効率を下げることなく、シームレスに移動局の無線方式を切り替えることが可能となる。 As described above, the mobile station MV2 of the second embodiment includes the mobile station AMV for line A and the mobile station BMV for line B, the line switching discriminator SW, and the storage transmission unit MT. When the line section switching discriminator SW determines the line section switching, the individual line section mobile station corresponding to the line section switching is selected by outputting a switching signal S10 to each individual line section mobile station. Switch to the operating mobile station. In addition, the memory transmission unit MT stores the post-switching continuation information that is necessary even after the line switching. It can be handed over to the ward mobile station. Such wireless system switching operation makes it possible to seamlessly switch the wireless system of the mobile station without lowering the operating efficiency of the train, even in line sections operated by different systems.
　本開示は詳細に説明されたが、上記した説明は、すべての局面において、例示であって、この開示がそれに限定されるものではない。例示されていない無数の変形例が、この開示の範囲から外れることなく想定され得るものと解される。 Although the present disclosure has been described in detail, the above description is illustrative in all aspects, and the disclosure is not limited thereto. It is understood that numerous variations not illustrated can be envisioned without departing from the scope of this disclosure.
　なお、本開示は、その開示の範囲内において、各実施の形態を自由に組み合わせたり、各実施の形態を適宜、変形、省略することが可能である。 It should be noted that, within the scope of this disclosure, each embodiment can be freely combined, and each embodiment can be appropriately modified or omitted.

Claims (6)

  1. 　互いに列車無線システムが異なる第１および第２の線区に渡って移動する列車に搭載された移動局であって、
    　第１の線区用移動局と、
    　第２の線区用移動局と、
    　線区切替識別器と、を備え、
    　前記線区切替識別器は、
    　前記第１および第２の線区用移動局から出力される特定の信号を受信した場合に、前記特定の信号に基づいて線区切替を判断し、前記第１および第２の線区用移動局に対して線区切替信号を入力し、前記第１および第２の線区用移動局のうち、切り替え後の線区に対応した方を前記列車無線システムを運用する運用移動局とする、移動局。     A mobile station mounted on a train that moves over first and second railway sections having different train radio systems,
    a first line mobile station;
    a second line mobile station;
    and a line section switching identifier,
    The line switching identifier is
    When a specific signal output from the first and second line mobile stations is received, line switching is determined based on the specific signal, and the first and second line mobile stations A line section switching signal is input to the station, and one of the first and second line section mobile stations corresponding to the line section after switching is set as an operation mobile station that operates the train radio system. mobile station.
  2. 　前記移動局は、
    　前記第１および第２の線区用移動局のうち前記運用移動局から、線区切替後も継続して必要な線区切替後継続情報を取得して記憶し、線区切替後に前記第１および第２の線区用移動局のうち前記運用移動局となった方に前記線区切替後継続情報を伝送する記憶伝送部をさらに備える、請求項１記載の移動局。     The mobile station
    Continues to acquire and store necessary post-switching continuation information even after line switching from the operating mobile station among the first and second line mobile stations; 2. The mobile station according to claim 1, further comprising a storage transmission unit configured to transmit said post-switching continuation information to one of said second line mobile station and said operating mobile station.
  3. 　前記第１および第２の線区は、それぞれ第１および第２の基地局を有し、
    　前記特定の信号は、
    　前記第１の線区用移動局が前記第１の基地局と同期した場合に前記第１の線区用移動局から出力され、
    　前記第２の線区用移動局が前記第２の基地局と同期した場合に、前記第２の線区用移動局から出力される、請求項１または請求項２記載の移動局。     the first and second lines have first and second base stations, respectively;
    The specific signal is
    output from the first line mobile station when the first line mobile station synchronizes with the first base station;
    3. The mobile station according to claim 1, which is output from said second line mobile station when said second line mobile station synchronizes with said second base station.
  4. 　前記第１および第２の線区用移動局は、
    　前記線区切替信号が入力された場合に、自らが前記運用移動局であった場合は、前記運用移動局であることを解除し、自らが前記運用移動局でなかった場合は、前記運用移動局となる、請求項１または請求項２記載の移動局。     The first and second line mobile stations are
    When the line section switching signal is input, if it is the operating mobile station, it cancels being the operating mobile station, and if it is not the operating mobile station, the operating mobile station. 3. A mobile station as claimed in claim 1 or claim 2, wherein the mobile station is a station.
  5. 　前記第１および第２の線区用移動局は、
    　前記線区切替信号が入力された場合に、予め定められた時間は、前記運用移動局であることを解除することも、前記運用移動局となることもしない、請求項４記載の移動局。     The first and second line mobile stations are
    5. The mobile station according to claim 4, wherein when said line switching signal is input, said mobile station does not cancel being said operating mobile station or become said operating mobile station for a predetermined time.
  6. 　前記第１および第２の線区は、
    　前記第１および第２の線区の無線電波を両方とも受信できる境界ゾーンを有し、
    　前記予め定められた時間は、
    　前記境界ゾーンの長さに基づいて設定される、請求項５記載の移動局。     The first and second line sections are
    Having a boundary zone capable of receiving radio waves from both the first and second railway sections,
    The predetermined time is
    The mobile station according to claim 5, which is set based on the length of said boundary zone.
PCT/JP2021/003199 2021-01-29 2021-01-29 Mobile station WO2022162862A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008118721A (en) * 2008-01-28 2008-05-22 Kyocera Corp Wireless communication terminal
JP2016508330A (en) * 2013-01-20 2016-03-17 エルジー エレクトロニクス インコーポレイティド Handover determination method and terminal for traffic offloaded to wireless LAN
JP2018142770A (en) * 2017-02-27 2018-09-13 三菱電機株式会社 Wireless communication system
JP2019192128A (en) * 2018-04-27 2019-10-31 株式会社東芝 Data analysis system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008118721A (en) * 2008-01-28 2008-05-22 Kyocera Corp Wireless communication terminal
JP2016508330A (en) * 2013-01-20 2016-03-17 エルジー エレクトロニクス インコーポレイティド Handover determination method and terminal for traffic offloaded to wireless LAN
JP2018142770A (en) * 2017-02-27 2018-09-13 三菱電機株式会社 Wireless communication system
JP2019192128A (en) * 2018-04-27 2019-10-31 株式会社東芝 Data analysis system

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