JP6933967B2 - Wireless system and wireless train control system - Google Patents

Description

The present invention relates to a wireless train control system for railways and the wireless system thereof.

Conventionally, there has been known a wireless train control system that uses radio to communicate control information related to safety between the ground and the vehicle on a railway (see Non-Patent Document 1). As shown in FIG. 4, the wireless train control system 101 is roughly classified into a ground system 102 and an on-board system 103 (see Non-Patent Document 2). The ground system 102 is installed on the ground and has a command center device 21, a ground device 22, a radio base station 4, and the like. The on-vehicle system 103 is installed on the vehicle and has an on-vehicle control device 31, an on-vehicle radio station 105, and the like. The command center device 21 is a device that monitors and manages train operation in a controlled line section (see Annex B of Non-Patent Document 2). The ground device 22 is a device that controls trains and turnouts in a controlled line section on the ground side. The on-board control device 31 is a device that monitors and controls the train to be controlled, and is connected to the ground device 22 via the wireless system 106. The radio system 106, also called a train radio system, is a system that provides radio data transmission between the ground device 22 and the on-board control device 31, and includes a radio base station 4 and an on-board radio station 105. The radio base station 4 is connected to the terrestrial device 22 via a terrestrial transmission line, and wirelessly performs data communication with the on-board radio station 105. The on-board radio station 105 is connected to the on-board control device 31 and wirelessly performs data communication with the radio base station 4.

The radio base station 4 and the on-board radio station 105 have a terrestrial radio device 41 and an on-board radio device 51, respectively, as radio transmission / reception devices. The radio base station 4 and the on-board radio station 105 have a base device 42 and an on-board device 52, respectively, as devices that provide a handover function. The radio base station 4 is arranged at one or more locations along the radio line according to the reach of the radio, and interfaces with the ground device via the ground transmission line (see 4.2 of Non-Patent Document 2). When a plurality of radio base stations 4a and 4b are arranged along the railway line, the radio system 106 can be used between the terrestrial radio device 41 and the on-board radio device 51 when the train passes through the area boundary of the radio base station 4. It is necessary to perform handover so that communication can be performed continuously.

Conventionally, a wireless system that performs handover has been known in railways. In such a wireless system, for example, the radio base station is switched when the position of the antenna of the on-board radio station exceeds the handover point (see, for example, Patent Document 1). Further, there is known a wireless system that communicates information via a wireless base station beyond the handover point when the wireless communication unit (on-vehicle wireless station) in the vehicle exceeds the handover point (see Patent Document 2).

In the wireless system 106 of the wireless train control system 101, it is a common technical knowledge that a railway operator provides a wireless base station 4 or the like. Therefore, the introduction cost of the wireless system 106 is high. However, if the railroad operator uses the mobile communication of the telecommunications carrier instead of providing the radio base station 4, the railroad operator cannot specify the handover time. In addition, the service of the telecommunications carrier you are using may go down. In addition, there may be problems with area coverage of telecommunications carriers and congestion of communications. For this reason, in the conventional wireless train control system, if the mobile communication of the telecommunications carrier is used, there is a possibility that communication cannot be continuously performed between the ground and the vehicle. Communication could not be used. A telecommunications carrier is a person who performs telecommunications services based on the Telecommunications Business Law.

Japanese Unexamined Patent Publication No. 2015-137079 JP-A-2015-139205

JIS E 3801-1: 2009 "Wireless Train Control System-Part 1: General Requirements and Functional Requirements" JIS E 3801-2: 2010 "Wireless Train Control System-Part 2: System Requirements"

The present invention solves the above problem, and provides a wireless train control system that can continuously communicate between the ground and the vehicle by using the mobile communication of a telecommunications carrier. The purpose is to do.

The wireless system of the present invention has an on-vehicle device mounted on a vehicle and a base device provided on the ground, and wirelessly communicates control information for controlling a train between the on-vehicle device and the base device. A wireless system, in which an on-board wireless connection device that performs wireless communication between the on-board device and wireless stations of a plurality of telecommunications carriers and the base device are connected to the lines of the respective telecommunications carriers. The line further has the radio station, and the on-board device sends control information to the base device to the radio of the plurality of telecommunications carriers. When the station is made to transmit to the on-board wireless connection device in parallel and the base device receives a plurality of the same control information, the control information received earliest among the same control information is adopted, and the base device receives the same control information. When the control information to be sent to the on-board device is transmitted in parallel to the lines of the plurality of communication carriers via the terrestrial wireless connection device, and the on-board device receives a plurality of the same control information, the same control is performed. It is characterized by adopting the control information received earliest among the information.

In this wireless system, the line of the telecommunications carrier is preferably a mobile phone network, and the radio station is preferably a base station or mobile station of the mobile phone network.

In this wireless system, the terrestrial wireless connection device is preferably connected to the line of the telecommunications carrier by wire or wirelessly.

This wireless train control system is a wireless train control system including a ground device that controls a controlled line section on the ground side and an on-board control device that monitors and controls the train to be controlled, and is claimed. The wireless system according to any one of 1 to 3 is provided, the ground device is connected to the base device of the wireless system, and the on-board control device is connected to the on-board device of the wireless system. It is characterized by that.

Since the wireless system and the wireless train control system of the present invention use the communication of a plurality of telecommunications carriers, even if the service of one telecommunications carrier goes down, communication between the ground and the vehicle is performed. Is done continuously.

The block block diagram of the wireless train control system which has the wireless system which concerns on one Embodiment of this invention. FIG. 6 is a block configuration diagram of a wireless train control system having a wireless system according to a modified example of the same embodiment. A sequence diagram showing the operation of the wireless system. Block configuration diagram of a conventional wireless train control system.

A wireless system and a wireless train control system according to an embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, the wireless train control system 1 includes a wireless system 6. The wireless train control system 1 has a configuration partially similar to that of the conventional wireless train control system defined in the Japanese Industrial Standards (Non-Patent Document 1 and Non-Patent Document 2), and the wireless system 6 is a conventional wireless train control system. Different from wireless system. In FIG. 1, the same reference numerals are given to the parts equivalent to those of the conventional wireless train control system.

In addition to the wireless system 6, the wireless train control system 1 includes a command center device 21, a ground device 22, and an on-board control device 31.

The command center device 21 is a device that monitors and manages train operation in a controlled line section (see Annex B of Non-Patent Document 2).

The ground device 22 is a device that controls trains and turnouts in a controlled line section on the ground side. The ground device 22 has hardware such as a processing device and a storage device, and operates by executing software.

The on-board control device 31 is a device that monitors and controls the train to be controlled, and is connected to the ground device 22 via the wireless system 6.

The wireless system 6 has an on-vehicle device 61 mounted on the vehicle and a base device 62 provided on the ground. The wireless system 6 is a system that wirelessly communicates control information for controlling a train between the on-board device 61 and the base device 62. The control information may be divided and stored in a plurality of slots for communication.

The terrestrial device 22 is connected to the base device 62 of the wireless system 6 via a terrestrial transmission line or radio. The on-vehicle control device 31 is connected to the on-vehicle device 61 of the wireless system 6 on the vehicle.

The wireless system 6 further includes an on-vehicle wireless connection device 63 and a plurality of terrestrial wireless connection devices 64 (64A, 64B, 64C). The terrestrial wireless connection devices 64A, 64B, and 64C connect the base device 62 to the lines 7A, 7B, and 7C of the respective telecommunications carriers A, B, and C. That is, the terrestrial wireless connection device 64A connects the base device 62 to the line 7A of the telecommunications carrier A. The terrestrial wireless connection device 64B connects the base device 62 to the line 7B of the telecommunications carrier B. The terrestrial wireless connection device 64C connects the base device 62 to the line 7C of the telecommunications carrier C. That is, the terrestrial wireless connection device 64A is opposed to the telecommunications carrier A, the terrestrial wireless connection device 64B is opposed to the telecommunications carrier B, and the terrestrial wireless connection device 64C is opposed to the telecommunications carrier C. The lines 7A, 7B, and 7C are communication networks of telecommunications carriers A, B, and C. The terrestrial wireless connection devices 64A, 64B, 64C are connected to the lines 7A, 7B, 7C of A, B, C by wire or wirelessly.

The lines 7A, 7B, and 7C have radio stations 71A, 71B, and 71C, respectively. The on-vehicle wireless connection device 63 performs wireless communication with the radio stations 71A, 71B, 71C of a plurality of telecommunications carriers A, B, and C. Since the telecommunications carriers A, B, and C have radio stations 71A, 71B, and 71C, they are mobile communication carriers.

Since the command center device 21, the ground device 22, the base device 62, and the ground wireless connection device 64 are installed on the ground, they are called the ground system 2. Since the on-vehicle control device 31, the on-vehicle device 61, and the on-vehicle wireless connection device 63 are installed on the vehicle, they are called the on-vehicle system 3. The on-board device 61 and the on-board wireless connection device 63 constitute the on-board radio station 5. The wireless train control system 1 uses the lines 7A, 7B, 7C and the radio stations 71A, 71B, 71C of the telecommunications carriers A, B, and C, and the lines 7A, 7B, 7C and the radio station 71A. , 71B, 71C are not part of the wireless train control system 1.

In the present embodiment, the lines 7A, 7B, 7C of the telecommunications carriers A, B, and C are mobile phone networks. The radio stations 71A, 71B, and 71C are base stations or mobile stations of the mobile phone network. A base station is a radio station that does not move on land (Ministry of Internal Affairs and Communications Ordinance, Radio Law Enforcement Regulations). A mobile station is a radio station that operates while moving or stopped at an unspecified point.

FIG. 2 shows a wireless system 6 according to a modified example of the present embodiment. In this modification, the base device 62 is one, and the wireless system 6 has two terrestrial wireless connection devices 64 for each of the lines 7A and 7B of the plurality of telecommunications carriers A and B. That is, the terrestrial wireless connection devices 64A1 and 64A2 connect the base device 62 to the line 7A of the telecommunications carrier A. The terrestrial wireless connection devices 64B1 and 64B2 connect the base device 62 to the line 7B of the telecommunications carrier B. The number of base devices 62 and the presence / absence and degree of multiplexing of the terrestrial wireless connection device 64 are not limited to the examples shown in FIGS. 1 and 2. Moreover, if there are a plurality of telecommunications carriers to be used, the specific number thereof is not limited.

The operation of the wireless system 6 shown in FIG. 2 will be described with reference to FIG. The operation of the wireless system 6 shown in FIG. 1 is the same. When constructing the wireless system 6, it is confirmed that the communication areas of the telecommunications carriers A and B cover the control target line section of the wireless train control system 1. In addition, the railway operator having the wireless train control system 1 makes a contract with the telecommunications carriers A and B in advance for band guarantee and SLA (service level agreement).

As an initial operation, the on-board wireless connection device 63 performs mutual authentication with each of the terrestrial wireless connection devices 64A1, 64A2, 64B1 and 64B2. Then, the on-board wireless connection device 63 registers the terrestrial wireless connection devices 64A1, 64A2, 64B1, and 64B2 as communication partners, and each of the terrestrial wireless connection devices 64A1, 64A2, 64B1, and 64B2 communicates with the on-board wireless connection device 63. Register as a partner.

First, a case where control information is sent from the vehicle to the ground will be described. The on-board device 61 causes the on-board wireless connection device 63 to transmit the control information to be sent to the base device 62 in parallel with the radio stations 71A and 71B of a plurality of telecommunications carriers. In the present embodiment, the on-board wireless connection device 63 duplicately transmits control information to the respective radio stations 71A and 71B. The presence / absence and degree of multiplexing in which the on-board wireless connection device 63 transmits control information to the wireless stations 71A and 71B are not limited thereto.

The lines 7A and 7B have radio stations 71A and 71B, respectively (see FIG. 2), and the control information transmitted by the on-board wireless connection device 63 is sent to the base device 62. Is received by the terrestrial wireless connection devices 64A1, 64A2, 64B1, 64B2 via the lines 7A and 7B (see FIG. 3). The control information has the base number of the base device 62, and the terrestrial wireless connection devices 64A1, 64A2, 64B1 and 64B2 convert the base number into the IP address of the base device 62. As a result, the control information that has reached the ground is routed to the appropriate base device 62.

The base device 62 receives the same control information in parallel from the terrestrial wireless connection devices 64A1, 64A2, 64B1, and 64B2. Therefore, when the base device 62 receives a plurality of the same control information, the base device 62 adopts the earliest received control information among the same control information. It should be noted that the same control information is determined, for example, based on the identification code attached to the control information or the identification code of the slot in which the control information is housed.

Next, a case where control information is sent from the ground to the vehicle will be described. The base device 62 transmits the control information to be transmitted to the on-board device 61 to the lines 7A and 7B of a plurality of telecommunications carriers in parallel via the terrestrial wireless connection devices 64A1, 64A2, 64B1 and 64B2.

Since the lines 7A and 7B have radio stations 71A and 71B, respectively, the control information is sent to the radio stations 71A and 71B. Since the control information is sent to the on-board device 61, it is transmitted to the on-board wireless connection device 63. The on-board wireless connection device 63 transmits the received control information to the on-board device 61.

The on-board device 61 receives the same control information from the on-board wireless connection device 63 in parallel. Therefore, when the on-board device 61 receives a plurality of the same control information, the on-board device 61 adopts the earliest received control information among the same control information. It should be noted that the same control information is determined, for example, based on the identification code attached to the control information or the identification code of the slot in which the control information is housed.

As described above, according to the wireless system 6 and the wireless train control system 1 according to the present embodiment, since the communication of a plurality of telecommunications carriers is used, even if the service of one telecommunications carrier goes down, the ground Communication between the vehicle and the vehicle is continuous.

The present invention is not limited to the configuration of the above embodiment, and various modifications can be made without changing the gist of the invention. For example, in the wireless train control system 1, the configuration and functions of the wireless system 6 of the present invention may be added to the conventional wireless system 106.

1 Wireless train control system 22 Ground device 31 On-board control device 6 Wireless system 61 On-board device 62 Base device 63 On-board wireless connection device 64 Ground wireless connection device 7A, 7B, 7C Line 71A, 71B, 71C Radio station A, B, C telecommunications carriers

Claims (4)

It is a wireless system that has an on-board device mounted on a vehicle and a base device provided on the ground, and wirelessly communicates control information for controlling a train between the on-board device and the base device.
An on-board wireless connection device that performs wireless communication between the on-board device and wireless stations of a plurality of telecommunications carriers,
Each further has a plurality of terrestrial wireless connection devices for connecting the base device to the line of the telecommunications carrier.
Each of the lines has the radio station.
The on-board device causes the on-board wireless connection device to transmit control information to be sent to the base device in parallel with the radio stations of a plurality of telecommunications carriers.
When the base device receives a plurality of the same control information, the base device adopts the earliest received control information among the same control information.
The base device transmits control information to be transmitted to the on-board device to a plurality of lines of the telecommunications carrier in parallel via the terrestrial wireless connection device.
The on-board device is a wireless system characterized in that when a plurality of the same control information is received, the earliest received control information among the same control information is adopted. The line of the telecommunications carrier is a mobile phone network.
The wireless system according to claim 1, wherein the wireless station is a base station or a mobile station of the mobile phone network. The wireless system according to claim 1 or 2, wherein the terrestrial wireless connection device is connected to the line of the telecommunications carrier by wire or wirelessly. It is a wireless train control system having a ground device that controls a controlled line section on the ground side and an on-board control device that monitors and controls the train to be controlled.
The wireless system according to any one of claims 1 to 3 is provided.
The ground device is connected to the base device of the wireless system, and the ground device is connected to the base device of the wireless system.
The on-board control device is a wireless train control system, characterized in that it is connected to the on-board device of the wireless system.

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