JP2020093719A - Train radio system, base station, mobile train station, and base station for notification - Google Patents

Abstract

To provide a method by which a train in a specific section is made to stop without using the information of the train location in a train radio system.SOLUTION: A train radio system 1001 comprises a mobile train station 104, plural base stations 103 arranged along a travel track of a train 105 and assigned peculiar base station numbers and a central device 102 communicating with the mobile train stations 104 through a corresponding base station. Each base station 103 notifies own base station number to the mobile train station 104 in a radio communication area 103A. The mobile train station 104 stores the base station number notified by the base station 103 and transmits a protection warning signal including the stored base station number to the central device 102 through the corresponding base station. The central device 102 selects a base station number based on the base station number included in the protection warning signal and transmits a protection receiving signal including the selected base station number to the plural base stations 103.SELECTED DRAWING: Figure 1

Description

The present invention relates to a train radio system.

In the conventional train radio system, when an abnormality such as a rock fall occurs on the track, the train that detects the abnormality issues a protection signal and another train that receives the protection signal sounds a protection alarm sound. However, there is a mechanism to stop the other trains.

Since the subway is an environment where radio waves between trains are hard to reach, a protection signal is transmitted between trains via a base station installed on the track. In the conventional technique, the protection signal is transmitted from all the base stations to stop the train over the entire section.

On the other hand, Patent Document 1 discloses a mechanism for stopping a train in a specific section, such as a section around the reporting train, by using train position information of the reporting train of the protection signal.

JP, 2014-46818, A

The conventional train radio system has a problem that it cannot stop trains in a specific section, so that the operation stop range is large and the operation stop time is long, which is not suitable for train operation in recent overcrowded timetables.

According to the technique of Patent Document 1, it is possible to stop the train in a specific section, but since train position information is used, there is a problem that it is necessary to introduce an expensive system such as a transponder.

In view of the above problems, it is an object of the present invention to stop a train in a specific section in a train radio system without using train position information.

A first train radio system of the present invention includes a train mobile station mounted on a train and issuing a protective alarm signal, and a plurality of bases arranged along a running line of the train and assigned unique base station numbers. Station and a central device that communicates with the train mobile station via a corresponding base station that is a base station having a wireless communication area at the position of the train mobile station, and each base station wirelessly communicates its own base station number. The train mobile station in the area is notified, and the train mobile station stores the base station number notified from the base station, and includes the stored base station number in the protection alert signal to the central device via the corresponding base station. The central device selects the base station number based on the base station number included in the protection notification signal, and includes the selected base station number in the protection reception signal to transmit to the plurality of base stations.

A second train radio system of the present invention is a train mobile station mounted on a train to issue a protective alarm signal, and a plurality of bases arranged along a train running line and assigned unique base station numbers. Station and a plurality of notification base stations located at the boundary of the wireless communication areas of two adjacent base stations and arranged alternately with the base stations along the running track, and the wireless communication areas at the positions of the train mobile stations. A central device that communicates with a train mobile station via a corresponding base station that is a base station that has, each notification base station is a train mobile station located in its wireless communication area, and a base station of base stations on both sides. Notifying the number, the train mobile station stores the base station number notified from the notifying base station, includes the stored base station number in the protection alarm signal and transmits it to the central device via the corresponding base station, The central unit selects a base station number based on the base station number included in the protection notification signal, and includes the selected base station number in the protection reception signal and transmits it to a plurality of base stations.

According to the present invention, the base station number is notified from the base station or the notifying base station to the train mobile station. Therefore, by including the base station number in the protective alarm signal issued by the train mobile station, the central device To the base station to which the train mobile station that issued the protective alert signal belongs. Therefore, the central unit includes the base station number selected based on the base station number included in the protection notification signal in the protection reception signal and transmits it to each base station, so that the train position information does not use Can be stopped.

1 is a configuration diagram of a train radio system according to the first embodiment. FIG. 3 is a diagram showing a frame configuration of a control signal between a base station and a train mobile station in the train radio system according to the first embodiment. It is a flow chart which shows operation of a train radio system after a central unit receives a protection signal. FIG. 6 is a configuration diagram of a train radio system according to the second embodiment. FIG. 9 is a diagram showing a frame configuration of a control signal between a train mobile station and a base station and a notification base station in the train radio system according to the second embodiment. It is a block diagram of the train radio system of Embodiment 3. FIG. 16 is a diagram showing a frame configuration of a control signal between a base station and a train mobile station in the train radio system according to the third embodiment.

<A. Embodiment 1>
<A-1. Composition>
FIG. 1 shows the configuration of a train radio system 1001 according to the first embodiment. As shown in FIG. 1, a train radio system 1001 includes a command console 101, a central device 102, n base stations 103, and a plurality of train mobile stations 104. The command console 101 and the central unit 102 are installed at the operation command center. The n base stations 103 are arranged along the running track of the train 105, and the wireless communication area 103A of each base station 103 includes the running track. Unique base station numbers c from 1 to n are assigned to the n base stations 103 in the order of arrangement. In this specification, for example, the base station 103 with the base station number c of 1 is referred to as the base station 103 (c=1). The train mobile station 104 is a mobile station mounted on the train 105.

The base station 103 is connected to the central device 102 and also to the train mobile station 104 existing in its own wireless communication area 103A. Therefore, the train mobile station 104 moves on the track as the train 105 travels, but via the base station 103 (hereinafter also referred to as “corresponding base station of the train mobile station 104”) having the wireless communication area 103A at that position. It is possible to communicate with the central device 102 or the command console 101 connected to the central device 102. In other words, the base station 103 relays communication between the train mobile station 104 mounted on the train 105 located in the wireless communication area 103A and the central device 102. As a result, the ground commander of the operation command center can make a call or perform data communication with the train crew who board the train 105.

The base station 103 repeatedly notifies the train mobile station 104 existing in the wireless communication area 103A of the base station number c at regular intervals. Thereby, the train mobile station 104 grasps the base station number c of the corresponding base station.

When the train crew detects an abnormality such as a rock fall on the track, the train crew operates the train mobile station 104 to issue a protective alarm signal. That is, the train mobile station 104 issues a protection alert signal. This protection alarm signal is transmitted from the train mobile station 104 to the central unit 102 via its corresponding base station. The train mobile station 104 includes the base station number c of the corresponding base station in issuing the protection alert signal. Therefore, for example, the base station number 3 is included in the protection alarm signal transmitted from the train mobile station 104 of the train 105 located in the wireless communication area 103A of the base station 103 (c=3).

The central device 102 selects a base station number based on the base station number included in the protection notification signal, and includes the selected base station number in the protection reception signal and transmits it to all the base stations 103. The protection reception signal is transmitted from each base station 103 to the train mobile station 104 in each wireless communication area 103A. The wireless communication area 103A of the base station 103 having the base station number included in the protection reception signal is the stop target section of the train 105. Therefore, the central unit 102 determines the stop target section based on the base station number included in the protection alarm signal.

As an example, the central apparatus 102 includes the base station number included in the protection alert signal and the base station numbers consecutive thereto in the protection reception signal. That is, when the protection notification signal includes the base station number 3, the central unit 102 includes the base station number 3 and the base station numbers 2 and 4 obtained by adding 1 to the base station number 3 in the protection reception signal. In this example, the base station 103 (c=3), which is the corresponding base station of the train mobile station 104 that issued the protection signal, and the wireless communication areas 103A of the base stations 103 (c=2, 4) adjacent to both sides of the train station 103 are stopped. It will be the target section.

However, the base station number selected by the central device 102 is not limited to this. The base station number included in the protection notification signal may not be included in the protection reception signal, and the base station number included in the protection notification signal may be one or plural. When a plurality of base station numbers are included in the protection alarm signal, those base station numbers may be continuous or discontinuous. In any case, the central unit 102 can arbitrarily determine the stop target section by selecting an arbitrary base station number based on the base station number included in the protection notification signal and including it in the protection reception signal.

The train mobile station 104 receives the protection reception signal from the corresponding base station. Then, when the base station number c of the corresponding base station matches with one of the base station numbers included in the protection reception signal, the train mobile station 104 sounds a protection alarm sound. Then, the train crew of the train 105 equipped with the train mobile station 104 stops the train 105. For example, when the protection signal includes the base station numbers 2, 3, and 4, the train 105 existing in the wireless communication area 103A of the base station 103 (c=2, 3, and 4) stops.

FIG. 2 is a block diagram showing the configurations of the base station 103 and the train mobile station 104.

The base station 103 includes a wireless processing unit 21a, a signal processing unit 21b, a storage unit 21c, and a central device interface unit 21d. The wireless processing unit 21a performs wireless communication with the train mobile station 104. The signal processing unit 21b performs various controls within the base station 103. The storage unit 21c stores data such as a base station number. The central device interface unit 21d connects to the central device 102.

The train mobile station 104 includes a wireless processing unit 22a, a signal processing unit 22b, a storage unit 22c, a voice output unit 22d, and an operation unit 22e. The wireless processing unit 22a performs wireless communication with the base station 103. The signal processing unit 22b performs various controls within the train mobile station 104. The storage unit 22c stores data such as a base station number. The voice output unit 22d causes a speaker mounted on the train 105 to sound a protective alarm sound. The operation unit 22e is an input interface for a train crew to perform a warning signal issuing operation.

The control signal communicated between the base station 103 and the train mobile station 104 includes a super frame 23a having a plurality of basic frames 23b. In the example of FIG. 2, one superframe 23a has 16 basic frames 23b from frame 0 to frame 15, of which frame 1 is assigned for notification of the base station number, and frame 0 and frame 2-15. Are assigned for call and data control. Each basic frame 23b is transmitted by time division control. Therefore, the train mobile station 104 can receive the base station number c from the corresponding base station without interfering with the call and data control.

<A-2. Operation>
Next, operations of the base station 103 and the train mobile station 104 will be described with reference to FIG. First, in the base station 103, the signal processing unit 21b reads the base station number stored in the storage unit 21c, and the wireless processing unit 21a transmits the base station number to the train mobile station 104 at regular intervals. In the train mobile station 104, the wireless processing unit 22a receives the base station number from the base station 103 at a constant cycle, and the signal processing unit 22b stores this in the storage unit 22c. When the train mobile station 104 moves into the wireless communication area 103A of another base station 103, the train mobile station 104 acquires the base station number from the other base station 103 by the above process. Therefore, the base station number of the corresponding base station is always stored in the storage unit 22c of the train mobile station 104.

When the train crew performs a notification operation on the operation unit 22e of the train mobile station 104, the signal processing unit 22b reads the base station number from the storage unit 22c and includes it in the protection notification signal, and the wireless processing unit 22a causes the protection notification signal. Is transmitted to the base station 103.

In the base station 103, when the wireless processing unit 21a receives the protection notification signal from the train mobile station 104, the central device interface unit 21d transmits the protection notification signal to the central device 102.

Upon receiving the protection alerting signal from the base station 103, the central device 102 transmits the protection reception signal to all the base stations 103. The operation of the train radio system 1001 after the central device 102 receives the protection alarm signal will be described below with reference to the flowchart of FIG.

First, the central unit 102 receives a protection alarm signal from the base station 103 (step S101). This protection notification signal includes the base station number x of the corresponding base station at the time of the notification of the train mobile station 104 that issued the protection notification signal. Here, x is an arbitrary natural number.

Next, the central unit 102 selects the base station number x included in the protection notification signal and the base station numbers x-1 and x+1 obtained by incrementing or decrementing the base station number x by 1, and selects the selected base station number as the protection reception signal. It transmits to all the base stations 103 including (step S102). That is, the protection reception signal includes the base station numbers x-1, x, x+1.

After that, each base station 103 transmits a protection reception signal to the train mobile station 104 within the wireless communication area 103A (step S103).

The train mobile station 104 that has received the protection reception signal determines whether the base station number of the corresponding base station stored in the storage unit 22c matches one of the base station numbers added to the protection reception signal (step S104). If the base station numbers match in step S104, the voice output unit 22d sounds a protective alarm sound (step S105), but if the base station numbers do not match, the voice output unit 22d does not generate a protective alarm sound, and the train wireless system 1001 operates. The operation ends.

When the voice output unit 22d sounds the protective alarm sound in step S105, the train crew stops the train 105 (step S106). Therefore, in this example, it is possible to stop only the train 105 existing in the wireless communication area 103A with the base station numbers x-1, x, x+1.

<A-3. Effect>
As described above, the train radio system 1001 according to the first embodiment includes a train mobile station 104 mounted on the train 105 for issuing a protective alarm signal, and a unique base station arranged along the running track of the train 105. A plurality of base stations 103 to which station numbers are assigned, and a central device 102 that communicates with a train mobile station 104 via a corresponding base station that is a base station 103 having a wireless communication area 103A at the position of the train mobile station 104. Prepare Then, each base station 103 notifies its own base station number to the train mobile station 104 in the wireless communication area 103A, and the train mobile station 104 stores and stores the base station number notified from the base station 103. The base station number is included in the protection alarm signal and transmitted to the central unit 102 via the corresponding base station, and the central unit 102 selects and selects the base station number based on the base station number included in the protection alarm signal. The base station number is included in the protection reception signal and transmitted to the plurality of base stations 103. As described above, according to the train radio system 1001, the base station 103 notifies the train mobile station 104 of the base station number. Therefore, by including the base station number in the protection alarm signal issued by the train mobile station 104. , The central station 102 can be informed of the base station 103 to which the train mobile station 104 that issued the protective alert signal belongs. Therefore, the central unit 102 includes the base station number selected based on the base station number included in the protection notification signal in the protection reception signal and transmits the base station number to each base station 103, so that the train position information is not used for the specific section. Train 105 can be stopped. Therefore, the operation stop time of the train 105 is shortened, which contributes to the operation on the normal timetable.

Specifically, each base station 103 transmits the protection reception signal received from the central device 102 to the train mobile station 104 in the wireless communication area 103A, and the train mobile station 104 has the stored base station number as the protection reception signal. The train 105 can be stopped by the train crew by sounding a protection alarm when the base station number included in the above is matched.

<B. Embodiment 2>
<B-1. Composition>
FIG. 4 is a configuration diagram of the train radio system 1002 according to the second embodiment. The train radio system 1002 includes a notification base station 106 in addition to the configuration of the train radio system 1001 of the first embodiment. The notification base station 106 is located at the boundary between the wireless communication areas of two adjacent base stations 103, and is provided alternately with the base stations 103 along the running line of the train 105. That is, (n-1) notification base stations 106 are provided for the n base stations 103.

The wireless communication area 106A of the notification base station 106 overlaps with the wireless communication areas 103A of the base stations 103 on both sides of the notification base station 106. However, a communication antenna of the notification base station 106 is an antenna such as a leaky coaxial cable (LCX) that narrows the reach of the radio wave, and the wireless communication area 106A is overlapped between the adjacent notification base stations 106. I won't.

In the train radio system 1001 according to the first embodiment, the base station 103 transmits its own base station number to the train mobile station 104. On the other hand, in the train radio system 1002 of the second embodiment, the notification base station 106 transmits the base station numbers of the base stations 103 on both sides to the train mobile station 104. For example, the notification base station 106 installed at the boundary of the wireless communication area 103A between the base station 103 (c=1) and the base station 103 (c=2) assigns the base station numbers c=1 and 2 to the train mobile station 104. Send to. Further, the notification base station 106 installed at the boundary of the wireless communication area 103A between the base station 103 (c=2) and the base station 103 (c=3) sets the base station numbers c=2 and 3 to the train mobile station 104. Send to. In the following description, the notification base station 106 (c=1, 2) will be referred to as the notification base station 106 installed at the boundary of the wireless communication area 103A between the base station 103 (c=1) and the base station 103 (c=2). ) Etc.

The train mobile station 104 is notified of the base station number of the base station 103 by the notification base station 106 and stores it in the storage unit 22c. Therefore, the base station number stored in the storage unit 22c is determined by the relationship between the position of the train mobile station 104 and the wireless communication area 106A of the notification base station 106. For example, when the train 105 travels from the base station 1 to the base station n, the train mobile station 104 includes the notification base station 106 (c=2) in the wireless communication area 103A of the base station 103 (c=2). If the position is not overlapped with the wireless communication area 106A of 3), the storage unit 22c of the train mobile station 104 stores the base station numbers 1 and 2 notified from the notification base station 106 (c=1, 2). If the wireless communication area 106A of the notification base station 106 (c=2, 3) overlaps, the base station numbers 2 and 3 notified from the notification base station 106 (c=2, 3) are stored. To be done. In this way, the train mobile station 104 stores the base station number of the corresponding base station and the base station number of the base station 103 adjacent to the corresponding base station.

FIG. 5 shows configurations of the base station 103, the train mobile station 104, and the notification base station 106 in the train radio system 1002. The configurations of the base station 103 and the train mobile station 104 are the same as those in the first embodiment.

The notification base station 106 includes a wireless processing unit 41a, a signal processing unit 41b, a storage unit 41c, and a central device interface unit 41d. The wireless processing unit 41a performs wireless communication with the train mobile station 104. The signal processing unit 41b performs various controls of the notification base station 106. The storage unit 41c stores data such as a base station number. The central device interface unit 41d connects to the central device 102.

The control signal communicated between the base station 103 and the train mobile station 104 includes a superframe 42a having a plurality of basic frames 42b. In the example of FIG. 5, one super frame 42a has 16 basic frames 42b from frame 0 to frame 15. Of these, frame 1 is not transmitted and frames 0 and 2-15 are assigned for call and data control. Each basic frame 42b is transmitted by time division control.

The control signal communicated between the notification base station 106 and the train mobile station 104 includes a superframe 43a having a plurality of basic frames 43b. In the example of FIG. 5, one superframe 43a has 16 basic frames 43b from frame 0 to frame 15, but only frame 1 among them is assigned to the notification of the base station number and transmitted by time division control. Therefore, the notification base station 106 can notify the train mobile station 104 of the base station number without interfering with the control signal from the base station 103.

<B-2. Operation>
Next, operations of the notification base station 106 and the train mobile station 104 will be described with reference to FIG. First, in the notification base station 106, the signal processing unit 41b reads the base station number stored in the storage unit 41c, and the wireless processing unit 41a transmits the base station number to the train mobile station 104 at a constant cycle. In the train mobile station 104, the wireless processing unit 22a receives the base station number from the notification base station 106 at a constant cycle, and the signal processing unit 22b stores this in the storage unit 22. When the train mobile station 104 moves into the wireless communication area 106A of the different notification base station 106, the train mobile station 104 acquires the base station number from the different notification base station 106 by the above process. Therefore, the storage unit 22c of the train mobile station 104 always stores the corresponding base station and the base station numbers of the base stations 103 adjacent thereto.

The operation in which the train mobile station 104 issues the protection notification signal and the protection notification signal is received by the central apparatus 102 via the base station 103 is the same as in the first embodiment. Upon receiving the protection alerting signal from the base station 103, the central device 102 transmits the protection reception signal to all the base stations 103. The operation of the train radio system 1002 after the central device 102 receives the protection alarm signal will be described below with reference to the flowchart of FIG.

First, the central unit 102 receives a protection alarm signal from the base station 103 (step S101). This protection alert signal includes base station numbers x and x+1 of the corresponding base stations at the time of the alert of the train mobile station 104 that issued the protection alert signal. Here, x is an arbitrary natural number.

Next, the central unit 102 selects the base station numbers x and x+1 included in the protection alarm signal and the base station numbers x-1 and x+2 obtained by increasing or decreasing the base station numbers x and x+1 by 1, and selects the selected base station numbers. It is included in the protection reception signal and transmitted to all base stations 103 (step S102). That is, this protection reception signal includes base station numbers x-1, x, x+1, x+2.

After that, each base station 103 transmits a protection reception signal to the train mobile station 104 within the wireless communication area 103A (step S103).

The train mobile station 104 receiving the protection reception signal determines whether one of the two base station numbers stored in the storage unit 22c matches the base station number given to the protection reception signal ( Step S104). The train mobile station 104 sounds a protective alarm sound when the base station numbers match in step S104 (step S105), but does not sound if they do not match, and ends the process.

When the train mobile station 104 sounds the protective alarm sound in step S105, the train crew of the train 105 equipped with the train mobile station 104 stops the train 105 (step S106). Through the above processing, the wireless communication area 103A of the base station 103 (c=x-1, x, x+1, x+2), or the notification base station number 106 (c=x-2, x-1) or the notification base station The train 105 existing in the wireless communication area 106A of 106 (c=x+2, x+3) stops.

<B-3. Effect>
The train radio system 1002 according to the second embodiment is arranged along the travel line of the train 105 and the train mobile station 104 mounted on the train 105 to issue a protective alarm signal, and is assigned a unique base station number. A plurality of base stations 103, a plurality of base stations 103 for notification, which are located at the boundary between the wireless communication areas 103A of two adjacent base stations 103 and which are arranged alternately with the base stations 103 along a running track, and train movements. A central unit 102 which communicates with the train mobile station 104 via a corresponding base station which is a base station 103 having a wireless communication area 103A at the station 104. Then, each notification base station 106 notifies the train mobile station 104 located in the wireless communication area 106A of the base station numbers of the adjacent base stations 103, and the train mobile station 104 notifies from the notification base station 106. The stored base station number is stored, the stored base station number is included in the protection alarm signal and transmitted to the central unit 102 via the corresponding base station, and the central unit 102 stores the base station number included in the protection alarm signal. The base station number is selected based on the selected base station number, and the selected base station number is included in the protection reception signal and transmitted to the plurality of base stations 103. Therefore, when the train mobile station 104 receives the protection reception signal from the base station 103, the train mobile station 104 determines whether or not the stored base station number and the protection reception signal match to determine whether or not the train mobile station 104 itself is a stop target. can do. In this way, the central unit 102 can specify the stop section of the train 105 by specifying the base station number included in the protection reception signal, as in the first embodiment. Further, according to the train radio system 1001, since train position information is not used, an expensive device such as a transponder is unnecessary. Further, the train mobile station 104 receives the base station number from the notifying base station 106 instead of the base station 103, so that when the train mobile station 104 is located at the boundary of the wireless communication areas 103A of the two base stations 103, The problem that the radio signal interferes and the base station number cannot be obtained is solved.

<C. Third Embodiment>
<C-1. Composition>
FIG. 6 shows the configuration of the train radio system 1003 according to the third embodiment. Compared to the train radio system 1001 of the first embodiment, the train radio system 1003 of the third embodiment includes a base station 1031 and a base station 1032 instead of the base station 103. The base stations 1031 and 1032 are arranged alternately along the running track of the train 105. The base station 1031 and the base station 1032 transmit the base station number to the train mobile station 104 similarly to the base station 103 of the first embodiment, but the transmission timing is different between the base station 1031 and the base station 1032. Therefore, even when the train mobile station 104 is located at the boundary between the wireless communication area 1031A of the base station 1031 and the wireless communication area 1032A of the base station 1032, the wireless signals from the base stations 1031 and 1032 interfere and the base station number is acquired. You can avoid the situation where you can't. Further, according to the train radio system 1003, it is not necessary to provide the notification base station 106 unlike the train radio system 1002 of the second embodiment. The configuration of the train radio system 1003 other than the base stations 1031 and 1032 is the same as that of the train radio system 1001 of the first embodiment.

FIG. 7 is a block diagram of the base stations 1031 and 1032 and the train mobile station 104 according to the third embodiment. The configurations of base station 1031 and base station 1032 are similar to those of base station 103 of the first embodiment.

The control signal communicated between the base station 1031 and the train mobile station 104 includes a super frame 61a having a plurality of basic frames 61b. In the example of FIG. 7, one super frame 61a has 16 basic frames 61b from frame 0 to frame 15. Among them, the frame 1 is assigned to the notification of the base station number, the frame 2 is not transmitted, and the frame 0 and the frame 2-15 are assigned to the call and the data control. Each basic frame 61b is transmitted by time division control.

The control signal communicated between the base station 1032 and the train mobile station 104 is composed of a super frame 62a having a plurality of basic frames 62b. In the example of FIG. 7, one super frame 62a has 16 basic frames 62b from frame 0 to frame 15. Among them, the frame 2 is assigned to the notification of the base station number, the frame 1 is not transmitted, and the frame 0 and the frame 2-15 are assigned to the call and the data control. Each basic frame 62b is transmitted by time division control. In this way, since the frames to which the notification of the base station number is assigned are different in the control signals transmitted from the base stations 1031 and 1032, the base station numbers transmitted from the base stations 1031 and 1032 interfere with each other in the train mobile station 104. Received without.

Other than the frame configuration of the control signal from the base stations 1031 and 1032 to the train mobile station 104 described above, the configuration is the same as that of the first embodiment.

<C-2. Effect>
In the train radio system 1003 according to the third embodiment, two adjacent base stations 1031 and 1032 transmit the base station number to the train mobile station 104 at different timings. Therefore, even when the train mobile station 104 is located at the boundary between the radio communication areas 1031A and 1032A of two adjacent base stations 1031 and 1032, the radio signals from the base stations 1031 and 1032 do not interfere with each other, and It is possible to get the number. Further, the train radio system 1003 does not require the notification base station 106 unlike the train radio system 1002 of the second embodiment, and thus can be realized with a simple configuration.

In each of the above embodiments, the base station number of each base station is used instead of the position information to specify the train stop target section in the protection signal. This technology can be applied not only to the train radio system, but also to a communication system having a function realized by using position information of a specific section.

In the present invention, the respective embodiments can be freely combined, or the respective embodiments can be appropriately modified or omitted within the scope of the invention.

21a, 22a, 41a wireless processing unit, 21b, 22b, 41b signal processing unit, 21c, 22c, 41c storage unit, 21d, 41d central device interface unit, 22e operating unit, 23a, 42a, 43a, 61a, 62a superframe, 23b, 42b, 43b, 61b, 62b basic frame, 101 command console, 102 central device, 103 base station, 103A, 106A, 1031A, 1032A wireless communication area, 104 train mobile station, 105 train, 106 notification base station, 1001 , 1002, 1003 Train radio system.

Claims (9)

A train mobile station that is installed in the train and issues a protective alert signal,
Arranged along the running line of the train, a plurality of base stations assigned a unique base station number,
A central device that communicates with the train mobile station via a corresponding base station that is the base station having a wireless communication area at the position of the train mobile station,
Each of the base stations notifies its own base station number to the train mobile station within the wireless communication area,
The train mobile station stores the base station number notified from the base station, and transmits the stored base station number to the central apparatus via the corresponding base station by including the stored base station number in the protection alarm signal,
The central device selects the base station number based on the base station number included in the protection notification signal, and transmits the selected base station number to the plurality of base stations by including it in a protection reception signal.
Train radio system. Each of the base stations transmits the protection reception signal received from the central device to the train mobile station in a wireless communication area,
The train mobile station sounds a protection alarm when the stored base station number matches the base station number included in the protection reception signal,
The train radio system according to claim 1. Arranged along the running track of the train, assigned a unique base station number, one of a plurality of base stations having a wireless communication area on the running track,
Relaying communication between the train mobile station and the central device mounted on the train located in the wireless communication area of the base station,
Transmitting the base station number to the train mobile station,
base station. A train mobile station mounted on a train to issue a protective alert signal,
Of a plurality of base stations arranged along the train running line and having a unique base station number, a central device via a corresponding base station which is the base station having a wireless communication area at the position of the train mobile station, Communicate,
The base station number is received and stored from the corresponding base station, and the stored base station number is included in the protection alarm signal and transmitted to the central apparatus via the corresponding base station,
Train mobile station. A train mobile station that is installed in the train and issues a protective alert signal,
Arranged along the running line of the train, a plurality of base stations assigned a unique base station number,
A plurality of notification base stations located at the boundary of the wireless communication areas of two adjacent base stations and arranged alternately with the base stations along the running track;
A central device that communicates with the train mobile station via a corresponding base station that is the base station having a wireless communication area at the position of the train mobile station,
Each of the notification base stations notifies the train mobile station located in the wireless communication area of the base station numbers of the base stations on both sides,
The train mobile station stores the base station number notified from the notifying base station, includes the stored base station number in a protection alarm signal, and transmits it to the central device via the corresponding base station. ,
The central device selects the base station number based on the base station number included in the protection notification signal, and transmits the selected base station number to the plurality of base stations by including it in a protection reception signal.
Train radio system. Of the plurality of base stations for notification, which are provided at the boundary of the adjacent wireless communication areas of the plurality of base stations arranged along the running track of the train, and which are alternately arranged with the plurality of base stations along the running track. One of the notification base stations,
The plurality of base stations are assigned a unique base station number, and relay communication between a train mobile station and a central device mounted on the train located in the wireless communication area,
Transmitting the base station number of the base station on both sides of the notification base station to the train mobile station,
Notification base station. A train mobile station mounted on a train to issue a protective alert signal,
Of a plurality of base stations arranged along the train running line and having a unique base station number, communicate with a central device via a corresponding base station which is a base station having a wireless communication area at the position of the train mobile station. Then
Of the plurality of notification base stations located at the boundary of the wireless communication areas of the adjacent base stations and arranged alternately with the plurality of base stations along the running track, wireless communication is performed at the position of the train mobile station. From the notification base station having an area, the base station numbers of the base stations on both sides thereof are received and stored, and the stored base station number is included in the protection alarm signal via the corresponding base station. Sending to the central device,
Train mobile station. The two adjacent base stations transmit the base station number to the train mobile station at different timings,
The train radio system according to claim 1. Transmitting the base station number to the train mobile station at a different timing from the adjacent base station,
The base station according to claim 3.

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