WO2023195073A1

WO2023195073A1 - Resource management device, train radio system, communication control method, control circuit, and storage medium

Info

Publication number: WO2023195073A1
Application number: PCT/JP2022/017111
Authority: WO
Inventors: 景子鮫島; 哲也青山
Original assignee: 三菱電機株式会社
Priority date: 2022-04-05
Filing date: 2022-04-05
Publication date: 2023-10-12
Also published as: JP7438473B1; JPWO2023195073A1

Abstract

A resource management device (203), which is connected to a train radio system in which communication is performed, by using a general purpose radio or an independent network, between reception management devices provided to respective direction center receptions for managing train service and a plurality of on-train systems provided to respective train compositions, is characterized by comprising: an information acquisition unit (31) which acquires communication information indicating communication statuses of the plurality of on-train systems and communication statuses of the reception management devices; and a rule generation unit (32) that, on the basis of the communication information, generates rules for determining a connection destination, from among the plurality of on-train systems, to which each of the reception management devices is to establish connection, and a communication means, from among the general purpose radio and the independent network, to be used for the reception management device to establish the connection to the connection destination.

Description

Resource management device, train radio system, communication control method, control circuit, and storage medium

The present disclosure relates to a resource management device, a train radio system, a communication control method, a control circuit, and a storage medium for managing train operation.

In recent years, in the field of train radio, which communicates between the ground command station that manages train operations and onboard trains, in addition to conventional command calls, there has been a demand for the transmission of images captured by forward monitoring cameras, in-train cameras, etc. is increasing. With the increase in traffic due to video transmission, the introduction of general-purpose radio such as 5G (5th Generation) is being considered to replace or supplement conventional private networks built exclusively for train radio. Existing train radio systems often use a circuit switching method in which the lines of the private network and the control center correspond on a one-to-one basis. On the other hand, if a private network and general-purpose radio are used together, and the total number of lines for the private network and general-purpose radio is greater than the number of control center counters, it becomes necessary to select a line to be used at each counter.

Patent Document 1 describes a train radio system that uses a private network and general-purpose radio in combination, in which an integrated radio controller provided both on the train and on the ground determines whether each train will use the private network or the general-purpose radio. The technology has been disclosed. The integrated radio controller determines whether to transmit each data using a private network or a general-purpose radio, depending on whether the data to be transmitted is train control information.

International Publication No. 2021/053908

However, according to the above-mentioned conventional technology, the line to be used is determined depending on the type of data to be transmitted, and the rules for determining the line are fixed. For this reason, traffic may concentrate on a specific control center window or line, and in this case, it may not be possible to connect to the control center window even though other control center windows or lines can be used. There was a problem with formation.

The present disclosure has been made in view of the above, and is a resource management device that makes it possible to determine the formation and lines to be used to which each command center window connects, depending on the communication status of the command center window and each formation. The purpose is to obtain.

In order to solve the above-mentioned problems and achieve the purpose, the resource management device according to the present disclosure includes a counter management device provided at each command center counter that manages train operation, and a counter management device provided at each train formation. Each of the plurality of onboard systems is a resource management device connected to a train radio system that communicates using general-purpose radio or a private network, and the resource management device is configured to monitor the communication status of each of the plurality of onboard systems and the counter management device. An information acquisition unit that acquires communication information indicating the communication status; and a connection point to which the counter management device connects among the plurality of on-board systems, and a connection destination of the counter management device among the general-purpose wireless and private networks, based on the communication information. The device is characterized by comprising a rule generation unit that generates a rule for determining a communication means to be used to connect with the destination.

The resource management device according to the present disclosure has the effect of making it possible to determine the formation to which each command center counter connects and the line to be used, depending on the communication status of the control center counter and each formation.

A diagram showing an example of the configuration of a train radio system according to Embodiment 1. Diagram showing an example of the configuration of the ground system shown in Figure 1 A diagram showing an example of the functional configuration of the resource management device shown in FIG. 2 A diagram showing a first example of the hardware configuration of the resource management device shown in FIG. 3 A diagram showing a second example of the hardware configuration of the resource management device shown in FIG. 3 Diagram showing an example of the configuration of the on-board system shown in Fig. 1 A diagram showing an example of the functional configuration of the line switching device shown in FIG. 6 A diagram showing a first example of the hardware configuration of the line switching device shown in FIG. A diagram showing a second example of the hardware configuration of the line switching device shown in FIG. 7 Sequence diagram for explaining the rule generation operation of the train radio system shown in Figure 1 Sequence diagram for explaining the rule change operation of the train radio system shown in Figure 1 Sequence diagram for explaining rule change operation of the train radio system according to Embodiment 2

Below, a resource management device, a train radio system, a communication control method, a control circuit, and a storage medium according to embodiments of the present disclosure will be described in detail based on the drawings. Furthermore, hereinafter, a wireless communication network whose scope of application is limited to train radio systems will be referred to as a private network, and a general-purpose wireless communication network whose scope of application is not limited to train radio systems will be referred to as general-purpose wireless.

Embodiment 1.
FIG. 1 is a diagram showing an example of the configuration of a train radio system 101 according to the first embodiment. The train radio system 101 includes a ground system 102 installed at a command center that manages train operation, and onboard systems 103a to 103c installed in each train formation. Hereinafter, each of the on-vehicle systems 103a to 103c will be simply referred to as the on-vehicle system 103 unless it is necessary to distinguish between them.

FIG. 2 is a diagram showing a configuration example of the ground system 102 shown in FIG. 1. The terrestrial system 102 includes

window management devices

201a and 201b, a terrestrial communication management device 202, a resource management device 203, a general-purpose radio management device 204, and a private network terrestrial radio station 205. Hereinafter, when there is no need to distinguish each of the

counter management devices

201a and 201b, they will simply be referred to as the counter management device 201. Note that in this specification, "connected to a counter" specifically means that communication is possible with the counter management device 201 corresponding to the counter.

A counter management device 201 is provided at each counter in the command center, and controls communication at the counter using a circuit switching method. The ground communication management device 202 manages all devices that require communication in the ground system 102. The management target of the terrestrial communication management device 202 also includes the counter management device 201 . Further, when the terrestrial communication management device 202 receives an inquiry about the communication history from the resource management device 203, it transmits the communication status history of the counter management device 201 to the resource management device 203.

The resource management device 203 has a function of managing communication between the counter management device 201 and the on-board system 103. Specifically, the resource management device 203 is used to connect to a connection destination to which the counter management device 201 connects among the plurality of on-board systems 103, and to a connection destination of the counter management device 201 among general-purpose wireless and private networks. The connection destination and the communication means are determined based on the rules for determining the communication means to be connected. The resource management device 203 also has a function of dynamically generating rules for determining connection destinations and communication means. Furthermore, the resource management device 203 switches the line used and the connection destination of the counter management device 201 so as to connect to the on-board system 103, which is the connection destination determined by the counter management device 201, using the communication means determined based on the rules. , notifies the on-vehicle system 103, which is the determined connection destination, of the determined line to be used. Detailed functions of the resource management device 203 will be described later.

The general-purpose radio management device 204 is connected via a wired or wireless network device to a general-purpose radio base station (not shown) installed within the train radio system 101 or outside the train radio system 101, and is included in the on-board system 103. Wireless communication is performed with a general-purpose wireless terminal 601 (not shown in FIG. 2) using general-purpose wireless. The private network terrestrial radio station 205 wirelessly communicates with the private network on-vehicle radio station 602 (not shown in FIG. 2) included in the on-vehicle system 103 via the private network.

FIG. 3 is a diagram showing an example of the functional configuration of the resource management device 203 shown in FIG. 2. The resource management device 203 includes a radio control section 301, a data processing section 302, a rule management section 303, a rule storage section 304, and a terrestrial communication control section 305.

The radio control unit 301 converts information acquired from the general-purpose radio management device 204 or the private network terrestrial radio station 205 into a format readable by the data processing unit 302 and outputs it to the data processing unit 302. In addition, the radio control unit 301 converts the information acquired from the data processing unit 302 into a format that can be read by the general-purpose radio management device 204 or the private network terrestrial radio station 205, and depending on the converted format, the information after the conversion is is output to the general-purpose radio management device 204 or the private network terrestrial radio station 205.

The data processing unit 302 extracts information necessary for the rule management unit 303 or the terrestrial communication control unit 305 from the information acquired from the radio control unit 301, and formats the information in a format readable by the rule management unit 303 or the terrestrial communication control unit 305. After converting, the converted information is output to the rule management section 303 or the ground communication control section 305 depending on the converted method. The data processing unit 302 also processes information that the radio control unit 301 should transmit via the general-purpose radio management device 204 or the private network terrestrial radio station 205, among the information acquired from the rule management unit 303 or the terrestrial communication control unit 305. The extracted information is output to the wireless control unit 301.

The rule management unit 303 includes an information acquisition unit 31 that acquires information via the data processing unit 302, and an information acquisition unit 31 that determines the line to be used and the connection destination of the counter management device 201 based on the information acquired by the information acquisition unit 31. It has a rule generation unit 32 that generates and updates rules, and a rule application unit 33 that controls the connection between the counter management device 201 and the on-board system 103 according to the rules generated by the rule generation unit 32. When the rule management unit 303 is requested by the data processing unit 302 to read out the rules stored in the rule storage unit 304, the rule management unit 303 acquires the corresponding rule from the rule storage unit 304 and converts it into a format readable by the data processing unit 302. After converting into , the converted rules can be output to the data processing unit 302 .

The information acquisition unit 31 acquires communication information indicating the communication status of each of the plurality of on-board systems 103 and the communication status of the counter management device 201 via the data processing unit 302. Specifically, the information acquisition unit 31 acquires communication information indicating the communication status of the onboard system 103 from the onboard system 103 via the data processing unit 302 and the wireless control unit 301, and Communication information indicating the communication status of the counter management device 201 is acquired from the ground communication management device 202 via the communication control unit 305 . The information acquisition unit 31 can acquire position information of each of a plurality of formations in addition to communication information. The information acquisition unit 31 can, for example, periodically acquire information. Further, the information acquisition unit 31 can also acquire information in response to instructions from the on-vehicle system 103.

The rule generation unit 32 can dynamically generate rules based on the information acquired by the information acquisition unit 31, taking into account the communication situation at that time. The rule generation unit 32 converts the generated rule into a format readable by the rule storage unit 304, and then outputs the converted rule to the rule storage unit 304.

The rule application unit 33 applies the rules by controlling the connection between the counter management device 201 and the on-board system 103 based on the rules generated by the rule generation unit 32. Specifically, the rule application unit 33 determines, based on the generated rules, which connection destinations the counter management device 201 connects to among the plurality of on-board systems 103a to 103c, and which terminals the counter management device 201 connects to among the general-purpose wireless and private networks. determines the connection destination and the communication means to be used for connection. Further, the rule application unit 33 controls the counter management device 201 to connect to the determined connection destination using the determined communication means. For example, in order to switch the connection destination of the counter management device 201, the rule application unit 33 transmits a disconnection request to the on-board system 103 to terminate the connection, and requests a connection to the on-board system 103 to start the connection. Send. At this time, the rule application unit 33 can instruct the determined communication means to be used using the connection request.

The rule storage unit 304 stores the rules output by the rule management unit 303. Further, the rule storage unit 304 retrieves the stored rules and outputs them to the rule management unit 303 in response to a request from the rule management unit 303 .

The terrestrial communication control unit 305 extracts information necessary for the terrestrial communication management device 202 from among the information acquired from the data processing unit 302, converts the extracted information into a format readable by the terrestrial communication management device 202, and then The converted information is output to the terrestrial communication management device 202. Furthermore, the terrestrial communication control unit 305 extracts information necessary for the data processing unit 302 from among the information acquired from the terrestrial communication management device 202, and converts the extracted information into a format readable by the data processing unit 302. , and transmits the converted information to the data processing unit 302.

FIG. 4 is a diagram showing a first example of the hardware configuration of the resource management device 203 shown in FIG. 3. The resource management device 203 includes a general-purpose wireless interface 401, a private network interface 402, a ground communication management device interface 403, a processor 404, a memory 405, a storage 406, a power supply circuit 407, and a battery 408.

The general-purpose wireless interface 401, private network interface 402, and ground communication management device interface 403 are communication interfaces. The general-purpose wireless interface 401 is connected to the general-purpose wireless management device 204 by wire or wirelessly. The private network interface 402 is connected to the private network terrestrial radio station 205 by wire or wirelessly. The terrestrial communication management device interface 403 is connected to the terrestrial communication management device 202 by wire or wirelessly.

The processor 404 is a general-purpose processing circuit such as a CPU (Central Processing Unit), and is also called a control circuit, an arithmetic unit, a microprocessor, a microcomputer, a DSP (Digital Signal Processor), or the like. The memory 405 and the storage 406 are storage devices, such as non-volatile memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), and EEPROM (registered trademark) (Electrically EPROM). These include flexible or volatile semiconductor memories, magnetic disks, flexible disks, optical disks, compact disks, mini disks, DVDs (Digital Versatile Disks), and the like.

The processor 404 can realize the functions of the resource management device 203 by reading and executing programs stored in the memory 405 or storage 406. The program executed by the processor 404 may be provided stored in a storage medium or may be provided via a communication channel. The power supply circuit 407 and the battery 408 can supply power to the general-purpose wireless interface 401 , the private network interface 402 , the ground communication management device interface 403 , the processor 404 , the memory 405 , and the storage 406 .

FIG. 5 is a diagram showing a second example of the hardware configuration of the resource management device 203 shown in FIG. 3. The resource management device 203 includes a general-purpose wireless interface 401, a private network interface 402, a ground communication management device interface 403, a power supply circuit 407, a battery 408, and a dedicated circuit 504. That is, the resource management device 203 includes a dedicated circuit 504 instead of the processor 404, memory 405, and storage 406 in FIG. The other configurations are the same as those in FIG. 4, so detailed explanations will be omitted.

The dedicated circuit 504 is a processing circuit for realizing the functions of the resource management device 203, and is dedicated hardware. The dedicated circuit 504 is, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof.

Although the resource management device 203 including the processor 404, the memory 405, and the storage 406, and the resource management device 203 including the dedicated circuit 504 have been described here with reference to FIGS. 4 and 5, the resource management device 203 is Some of the functions may be realized using the processor 404, memory 405, and storage 406, and some other functions may be realized using the dedicated circuit 504.

FIG. 6 is a diagram showing a configuration example of the on-vehicle system 103 shown in FIG. 1. The on-board system 103 is provided for each train formation, and includes a general-purpose wireless terminal 601, a private network on-board radio station 602, a line switching device 603, and an on-board communication management device 604.

The general-purpose radio terminal 601 communicates wirelessly with the general-purpose radio management device 204 of the ground system 102 using general-purpose radio via a general-purpose radio base station (not shown) located within or outside the train radio system 101. .

The private network on-vehicle radio station 602 communicates wirelessly with the private network terrestrial radio station 205 of the ground system 102 via the private network. The line switching device 603 transmits a communication request to the resource management device 203 of the ground system 102 according to the status of the onboard system 103 on which the line switching device 603 is installed, and also sends a communication request to the onboard system 103 on which the line switching device 603 is installed. The line used by the system 103 is switched as determined by the resource management device 203 in accordance with instructions from the resource management device 203.

The on-board communication management device 604 manages all devices that require communication in the on-board system 103. Further, when the onboard communication management device 604 receives an inquiry about the communication history from the resource management device 203 of the ground system 102, the onboard communication management device 604 transmits communication information indicating the communication status of the onboard system 103 to the resource management device 203 in response to the inquiry. do. Note that when the counter management device 201 of the ground system 102 “connects to the onboard system 103” or “connects to the formation,” specifically, It means that communication is possible.

FIG. 7 is a diagram showing an example of the functional configuration of the line switching device 603 shown in FIG. 6. The line switching device 603 includes a wireless control section 701, a data processing section 702, a communication request type determination section 703, and an on-vehicle communication control section 704.

The wireless control unit 701 converts information acquired from the general-purpose wireless terminal 601 or the private network on-vehicle wireless station 602 into a format readable by the data processing unit 702, and outputs the converted information to the data processing unit 702. Additionally, the wireless control unit 701 converts the information acquired from the data processing unit 702 into a format that can be read by the general-purpose wireless terminal 601 or the private network on-vehicle wireless station 602, and depending on the converted format, the converted information is output to the general-purpose wireless terminal 601 or private network on-vehicle wireless station 602.

The data processing unit 702 extracts information required by the communication request type determination unit 703 or the on-vehicle communication control unit 704 from the information acquired from the wireless control unit 701, and uses the extracted information to After the on-board communication control unit 704 converts the information into a readable format, the converted information is output to the communication request type determination unit 703 or the on-board communication control unit 704, depending on the converted format. Also, the data processing unit 702 determines whether the wireless control unit 701 transmits the information via the general-purpose wireless terminal 601 or the private network on-board wireless station 602 from among the information acquired from the communication request type determination unit 703 or the on-board communication control unit 704. and outputs the extracted information to the wireless control unit 701.

The communication request type determination unit 703 acquires information necessary for determining the communication request type from the data processing unit 702, and determines the type of communication request based on the acquired information. Communication request type determining section 703 outputs the determined type to data processing section 702 .

The on-board communication control unit 704 extracts information necessary for the on-board communication management device 604 from among the information acquired from the data processing unit 702, and converts the extracted information into a format readable by the on-board communication management device 604. After the conversion, the converted information is output to the on-vehicle communication management device 604. In addition, the on-board communication control unit 704 extracts information necessary for the data processing unit 702 from among the information acquired from the on-board communication management device 604, and converts the extracted information into a format readable by the data processing unit 702. After the conversion, the converted information is output to the data processing unit 702.

FIG. 8 is a diagram showing a first example of the hardware configuration of the line switching device 603 shown in FIG. 7. The line switching device 603 includes a general-purpose wireless interface 801, a private network interface 802, an on-vehicle communication management device interface 803, a processor 804, a memory 805, a storage 806, a power supply circuit 807, and a battery 808.

The general-purpose wireless interface 801, private network interface 802, and on-vehicle communication management device interface 803 are communication interfaces. The general-purpose wireless interface 801 is connected to the general-purpose wireless terminal 601 by wire or wirelessly. The private network interface 802 is connected to the private network on-vehicle wireless station 602 by wire or wirelessly. The on-board communication management device interface 803 is connected to the on-board communication management device 604 by wire or wirelessly.

The processor 804 is a general-purpose processing circuit such as a CPU, and is also called a control circuit, arithmetic unit, microprocessor, microcomputer, DSP, etc. The memory 805 and the storage 806 are storage devices, such as nonvolatile or volatile semiconductor memories such as RAM, ROM, flash memory, EPROM, and EEPROM, magnetic disks, flexible disks, optical disks, compact disks, minidisks, and DVDs. etc.

The processor 804 can realize the functions of the line switching device 603 by reading and executing a program stored in the memory 805 or storage 806. The program executed by the processor 804 may be provided stored in a storage medium or may be provided via a communication path. The power supply circuit 807 and the battery 808 can supply power to the general-purpose wireless interface 801, the private network interface 802, the on-vehicle communication management device interface 803, the processor 804, the memory 805, and the storage 806.

FIG. 9 is a diagram showing a second example of the hardware configuration of the line switching device 603 shown in FIG. 7. The line switching device 603 includes a general-purpose wireless interface 801, a private network interface 802, an on-board communication management device interface 803, a power supply circuit 807, a battery 808, and a dedicated circuit 904. That is, the line switching device 603 has a dedicated circuit 904 instead of the processor 804, memory 805, and storage 806 in FIG. The other configurations are the same as those in FIG. 8, so detailed explanations will be omitted.

The dedicated circuit 904 is a processing circuit for realizing the functions of the line switching device 603, and is dedicated hardware. Dedicated circuit 904 may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

Although the line switching device 603 including the processor 804, memory 805, and storage 806 and the line switching device 603 including the dedicated circuit 904 have been described here with reference to FIGS. 8 and 9, the line switching device 603 is Some of the functions may be realized using the processor 804, memory 805, and storage 806, and some other functions may be realized using the dedicated circuit 904.

Next, the operation of the train radio system 101 will be explained.

FIG. 10 is a sequence diagram for explaining the rule generation operation of the train radio system 101 shown in FIG. 1. In the example shown in FIG. 10, there are two command center counters managed by each of the

counter management devices

201a and 201b, and the formations that may be connected to the

counter management devices

201a and 201b are formation #1, formation #2, It is assumed that there are three formations, formation #3. Further, the onboard system 103 provided corresponding to formation #1 is installed as an onboard system 103a, the onboard system 103 provided corresponding to formation #2 is installed as an onboard system 103b, and the onboard system 103 provided corresponding to formation #3 is installed as an onboard system 103a. The on-vehicle system 103 thus obtained is referred to as an on-vehicle system 103c. Although omitted in FIG. 10, the onboard system 103b of formation #2 and the onboard system 103c of formation #3 each have the configuration shown in FIG. 6, similarly to the onboard system 103a. do.

Furthermore, in the example shown in FIG. 10, CH1 exists as a line owned by the general-purpose radio management device 204, and CH2 and CH3 exist as lines owned by the private network terrestrial radio station 205. Furthermore, before starting the rule creation process described here, the counter management device 201a is in communication with the private network on-vehicle radio station 602 of formation #3 using CH2 of the private network terrestrial radio station 205. Let's assume that it is. It is also assumed that the counter management device 201b is communicating with the private network on-vehicle radio station 602 of formation #2 using CH3 of the private network terrestrial radio station 205.

Based on the above premise, the operation when performing rule creation processing will be explained. Here, it is assumed that an event of low importance occurs in the onboard system 103a of formation #1 after the rule creation process is performed.

The information acquisition unit 31 of the resource management device 203 makes communication history inquiries to the ground communication management device 202 and the onboard communication management devices 604 of each of formations #1 to #3 at regular intervals. Note that, here, the resource management device 203 makes a communication history inquiry (step S1001) to the ground communication management device 202, and then inquires about the communication history to the onboard communication management device 604 of the onboard system 103a of formation #1. A history inquiry (step S1002) is being made. Further, the resource management device 203 makes a communication history inquiry (step S1003) to the onboard communication management device 604 of the onboard system 103b of formation #2, and then queries the onboard communication management device 604 of the onboard system 103c of formation #3. A communication history inquiry is made to the management device 604 (step S1004). However, the order in which the resource management device 203 makes communication history inquiries is not particularly limited.

The ground communication management device 202 and the onboard communication management devices 604 of each of formations #1 to #3 transmit communication information indicating the communication status of each device to be managed to the resource management device 203 in response to the communication history inquiry. do. Therefore, the resource management device 203 obtains communication information indicating the communication status of each of the plurality of on-board systems 103a to 103c and the communication status of each of the

counter management devices

201a and 201b by making a communication history inquiry. Note that the communication information acquired from the on-board communication management device 604 may include position information at each point in time of formation.

The rule generation unit 32 of the resource management device 203 creates a rule for determining the line to be used and the connection destination of each counter management device 201 based on the communication status indicated by the acquired communication information every time the communication history is inquired. Or update (step S1005). Specifically, the resource management device 203 creates or updates the rules after considering the availability status of each counter management device 201 and changes in the communication status of each on-board system 103. The resource management device 203 stores the created or updated rules in the rule storage unit 304 within the resource management device 203. Here, the rules generated by the rule generation unit 32 are "assign a contact point to high-priority communication" and "assign voice to a private network."

When an event occurs (step S1006), the on-board communication management device 604 of the on-board system 103a of formation #1 notifies the line switching device 603 of the occurrence of the event. When the line switching device 603 receives the notification of the occurrence of an event, it determines the content of the event that has occurred, and transmits a communication request according to the content of the event. Since the event that has occurred here is a request for audio transmission with low importance, the line switching device 603 transmits a normal communication request requesting audio transmission to the resource management device 203 (step S1007). Note that no particular wireless system is specified here.

When the rule application unit 33 of the resource management device 203 receives a normal communication request from the line switching device 603, the rule application unit 33 controls the usage of each window management device 201 by applying the rule that was created or updated at the timing of the previous communication history inquiry. The line and connection destination are reviewed (step S1008). Here, the communication priority is in the order of formation #2, formation #1, and formation #3 from the highest, and the normal communication request newly requested by formation #1 is a request for audio transmission. Therefore, by applying the rule, the rule application unit 33 selects formation #3, which has a lower communication priority than formation #1, among formations #2 and #3 that are communicating using the private network. An example will be described in which communication is disconnected and formation #1 connects to a counter managed by the counter management device 201a through a private network.

The resource management device 203 transmits a disconnection request to the line switching device 603 of the onboard system 103c of composition #3 (step S1009), and disconnects the communication between the counter management device 201a and the onboard system 103c. Subsequently, the resource management device 203 transmits a connection request to the line switching device 603 of the onboard system 103a of formation #1 (step S1010), and establishes a private network between the counter management device 201a and the onboard system 103a. Establish communication using CH2.

FIG. 11 is a sequence diagram for explaining the rule changing operation of the train radio system 101 shown in FIG. 1. In the operation example of FIG. 11, similarly to FIG. 10, there are two command center counters managed by each of the

counter management devices

201a and 201b, and the organization # It is assumed that there are three formations: 1, formation #2, and formation #3. Further, the onboard system 103 provided corresponding to formation #1 is installed as an onboard system 103a, the onboard system 103 provided corresponding to formation #2 is installed as an onboard system 103b, and the onboard system 103 provided corresponding to formation #3 is installed as an onboard system 103a. The on-vehicle system 103 thus obtained is referred to as an on-vehicle system 103c. Although omitted in FIG. 11, the onboard system 103b of formation #2 and the onboard system 103c of formation #3 each have the configuration shown in FIG. 6, similarly to the onboard system 103a. do.

Furthermore, in the example shown in FIG. 11, as in the example shown in FIG. 10, CH1 exists as a line owned by the general-purpose radio management device 204, and CH2 and CH3 exist as lines owned by the private network terrestrial radio station 205. Furthermore, before starting the rule creation process described here, the counter management device 201a is in communication with the private network on-vehicle radio station 602 of formation #3 using CH2 of the private network terrestrial radio station 205. Let's assume that it is. It is also assumed that the counter management device 201b is communicating with the private network on-vehicle radio station 602 of formation #2 using CH3 of the private network terrestrial radio station 205.

The rule creation process from step S1101 to step S1105 is the same as the process from step S1001 to step S1005 in FIG. 10, so a detailed explanation will be omitted here. Note that the rules generated by the rule generation unit 32 in step S1105 are "assign a contact point to high-priority communication" and "assign voice to private network", as in the example of FIG.

After the rule creation process from step S1101 to step S1105, when a highly important event occurs in the onboard system 103a (step S1106), the onboard communication management device 604 of formation #1 transfers the occurrence of the event to the line switching device. 603. When the line switching device 603 receives the notification of the occurrence of an event, it determines the content of the event that has occurred, and transmits a communication request according to the content of the event. Here, since a highly important event occurs that requests audio transmission and specifies general-purpose wireless as the communication method, the line switching device 603 sends an emergency communication request to the resource management device 203. (step S1107).

When the rule application unit 33 of the resource management device 203 receives the emergency communication request from the line switching device 603, it determines that it is necessary to change the created or updated rules according to the emergency communication request, and causes the rule generation unit 32 to apply the emergency communication request. The communication request is notified, and the rule generation unit changes the created or updated rule (step S1108). For example, the rule generation unit 32 creates part of the rule such as "assign a contact point to high-priority communication" and "voice is basically assigned to the private network, but can also be assigned to general-purpose wireless if requested." change. The resource management device 203 reviews the lines used and connection destinations of each counter management device 201 by applying the changed rules (step S1109). Here, the communication priority is in the order of formation #2, formation #1, and formation #3 from the highest, and the new emergency communication request from formation #1 is a voice transmission request and is compatible with the communication method. Since wireless is specified, by applying the changed rule, the resource management device 203 changes the connection destination of the counter management device 201a from the onboard system 103c of formation #3 to the onboard system 103a of formation #1. A case will be described in which the general-purpose wireless CH1 is selected as the switching line and the line used between the counter management device 201a and the on-board system 103a.

The resource management device 203 transmits a disconnection request to the line switching device 603 of the onboard system 103c of formation #3 (step S1110), and disconnects the connection between the counter management device 201a and the onboard system 103c of formation #3. Disconnect communication. The resource management device 203 transmits a connection request to the line switching device 603 of the onboard system 103a of formation #1 (step S1111), and establishes a connection between the counter management device 201a and the onboard system 103a of formation #1. Communication is established using general-purpose wireless CH1.

Note that when the line switching device 603 determines the importance of an event, the line switching device 603 makes the determination based not only on the information given before operation, but also on the information acquired by the line switching device 603 during operation. It is also possible to make a determination based on. An example of a determination based on information acquired during operation is, "The line switching device 603 has a history in which general-purpose wireless was specified by the resource management device 203 at the time of video transmission, but the configuration equipped with the line switching device 603 An example of this is when a general-purpose radio cannot be used at the location where a vehicle is currently traveling, so a still image of the video is to be transmitted over a private network, and this communication request is determined to be of high importance.

As described above, according to the first embodiment, the resource management device 203 is a train radio system in which the counter management device 201 and each of the plurality of onboard systems 103 communicate using a general-purpose radio or a private network. 101. The resource management device 203 includes an information acquisition unit 31 that acquires communication information indicating the communication status of each of the plurality of on-board systems 103 and the communication status of the counter management device 201, and a Based on this, to determine the connection destination to which the counter management device 201 connects among the plurality of on-board systems 103 and the communication means to be used by the counter management device 201 to connect to the connection destination among the general-purpose wireless and private networks. and a rule generation unit 32 that generates rules. Therefore, by using the generated rules, it becomes possible to determine the connection destination and communication means in consideration of the communication status of each of the counter management device 201 and the on-board system 103.

At this time, the information acquisition section 31 further acquires the position information of each of the plurality of formations, thereby enabling the rule generation section 32 to generate rules based on the position information. Further, the information acquisition unit 31 can repeatedly acquire communication information, for example, at a predetermined period, and the rule generation unit 32 can update the rule every time communication information is acquired.

Furthermore, when the rule generation unit 32 receives a change request requesting a rule change from the on-board system 103, the rule generation unit 32 can update the rule in accordance with the change request. The change request is, for example, the emergency communication request shown in FIG. 11. When the rule generation unit 32 receives an emergency communication request as shown in FIG. 11, it can update the rule so as to give priority to connection with the on-vehicle system 103a that is the source of the emergency communication request.

Embodiment 2.
In the first embodiment described above, the resource management device 203 uses communication information acquired from the ground communication management device 202 of the ground system 102 and the line switching device 603 and the onboard communication management device 604 of the onboard system 103. , it was decided to create and apply rules for determining the line to be used and the connection destination of each counter management device 201. In the second embodiment, a method will be described in which a part of the rule creation process is performed in the line switching device 603 of the on-board system 103.

The configuration of the train radio system 101, the configuration of the ground system 102 and the onboard system 103, and the functional configuration and hardware configuration of the resource management device 203 and line switching device 603 according to the second embodiment are the same as those of the first embodiment. Therefore, detailed explanation will be omitted here.

FIG. 12 is a sequence diagram for explaining the rule changing operation of the train radio system 101 according to the second embodiment. In the operation example shown in FIG. 12, as in the examples shown in FIGS. 10 and 11, there are two command center counters managed by the

counter management devices

201a and 201b, respectively, and there is a possibility of connection to the

counter management devices

201a and 201b. It is assumed that there are three formations: formation #1, formation #2, and formation #3. Further, the onboard system 103 provided corresponding to formation #1 is installed as an onboard system 103a, the onboard system 103 provided corresponding to formation #2 is installed as an onboard system 103b, and the onboard system 103 provided corresponding to formation #3 is installed as an onboard system 103a. The on-vehicle system 103 thus obtained is referred to as an on-vehicle system 103c. Although omitted in FIG. 12, the onboard system 103b of formation #2 and the onboard system 103c of formation #3 each have the configuration shown in FIG. 6, similarly to the onboard system 103a. do.

Furthermore, in the example shown in FIG. 12, as in the example shown in FIG. 10 and the example shown in FIG. do. Furthermore, before starting the rule creation process described here, the counter management device 201a is in communication with the private network on-vehicle radio station 602 of formation #3 using CH2 of the private network terrestrial radio station 205. Let's assume that it is. It is also assumed that the counter management device 201b is communicating with the private network on-vehicle radio station 602 of formation #2 using CH3 of the private network terrestrial radio station 205. Hereinafter, parts that are different from Embodiment 1 will be mainly explained.

In the first embodiment, all rule creation processing was performed in the resource management device 203, but in the second embodiment, after each line switching device 603 created a rule proposal, the resource management device 203 Generate rules by integrating rule proposals.

First, the information acquisition unit 31 of the resource management device 203 makes a communication history inquiry at regular intervals to the ground communication management device 202 and the onboard communication management devices 604 of each of formations #1 to #3 (steps S1201 to S1204). Note that in the second embodiment, as in the first embodiment, the order of communication history inquiries shown in steps S1201 to S1204 is an example.

When the resource management device 203 acquires communication information from each device through a communication history inquiry, the resource management device 203 collects the communication information of all the devices that aggregate the communication information of the plurality of on-board systems 103 and the counter management device 201 that are the targets of the inquiry. The communication history is transmitted to each of the plurality of on-board systems 103. Note that the communication information acquired by the resource management device 203 may include position information of each organization.

The resource management device 203 notifies the line switching device 603 of the onboard system 103a of formation #1 of the communication history of all devices (step S1205). The line switching device 603 of the on-board system 103a performs rule creation processing based on the communication history of all devices received from the resource management device 203, and creates a draft rule (step S1206). For example, the draft rule created in formation #1 is "audio will be transmitted over the private network." The line switching device 603 of the on-board system 103a notifies the resource management device 203 of the created rule plan (step S1207).

The resource management device 203 notifies the line switching device 603 of the onboard system 103b of formation #2 of the communication history of all devices (step S1208). The line switching device 603 of the on-board system 103b performs rule creation processing based on the communication history of all devices received from the resource management device 203, and creates a draft rule (step S1209). For example, the proposed rule created in organization #2 is to "assign a contact point to high-priority communications." The line switching device 603 of the on-board system 103b notifies the resource management device 203 of the created rule plan (step S1210).

The resource management device 203 notifies the line switching device 603 of the onboard system 103c of formation #3 of the communication history of all devices (step S1211). The line switching device 603 of the on-board system 103c performs rule creation processing based on the communication history of all devices received from the resource management device 203, and creates a draft rule (step S1212). For example, the proposed rules created for formation #3 are ``If there is a conflict, the formation with the longest communication duration will be cut off'' and ``audio will be transmitted using general-purpose wireless.'' The line switching device 603 of the on-board system 103c notifies the resource management device 203 of the created rule plan (step S1213).

The order of the processes from steps S1205 to S1213 above is an example, and the order of each process may be changed, or multiple processes may be performed simultaneously. Note that the generation of the rule plan in the line switching device 603 may be performed by the communication request type determination section 703, or may be performed by providing a rule plan generation section as a new functional section.

The resource management device 203 generates rules by performing a rule integration process that integrates multiple rule proposals generated in each of the multiple on-board systems 103a to 103c (step S1214). Each time the rule generation unit 32 of the resource management device 203 receives a rule plan from each line switching device 603, it generates a rule by integrating the rule plans to avoid inconsistencies with existing rules as much as possible. Then, the generated rules are stored in the rule storage unit 304. The criteria used by the rule generation unit 32 of the resource management device 203 to integrate rule proposals may be provided in advance in the resource management device 203, or may be based on information acquired by the resource management device 203 during operation. It may be generated from. For example, the judgment criterion may be "Give priority to the rules of compositions in which many high-priority communications have been performed in the most recent certain period of time." Alternatively, the determination criteria may be such that the priority of the organization is determined in advance or during operation, and that "a rule plan with a higher priority is given priority." The priority of the formations can be set high, for example, for formations that pass through important locations, formations whose operation delays affect other formations, and the like. In this case, by integrating the proposed rules, the rule generation unit 32 can set "assign a contact point to high-priority communication" and "assign audio to private network" as an integrated rule.

When an event occurs in the onboard system 103a of composition #1, the onboard communication management device 604 of the onboard system 103a of formation #1 notifies the line switching device 603 of the occurrence of the event. When the line switching device 603 of the on-board system 103a receives the notification of the occurrence of an event from the on-board communication management device 604, it determines the content of the event. Here, it is assumed that the importance of the event is low, audio transmission is requested, and no wireless method is specified. The line switching device 603 of the on-board system 103a transmits a normal communication request to the resource management device 203 (step S1216).

When the rule application unit 33 of the resource management device 203 receives the normal communication request from the line switching device 603, it applies the created or updated rule and reviews the lines used and connection destinations of each window management device 201 (step S1217). . The communication priority is in the order of formation #2, formation #1, and formation #3 from the highest, and since the normal communication request newly requested by formation #1 is a request for audio transmission, the resource management device 203 A case will be described in which the connection destination of the counter management device 201a is switched from the on-board system 103c to the on-board system 103a, and the line used for connection with the on-board system 103a is changed to CH2 of the private network.

The resource management device 203 transmits a disconnection request to the line switching device 603 of the onboard system 103c of composition #3 (step S1218), and disconnects the communication between the counter management device 201a and the onboard system 103c. Next, the resource management device 203 transmits a connection request to the line switching device 603 of the onboard system 103a of formation #1 (step S1219), and connects the counter management device 201a and the onboard system 103a via CH2 of the private network. Establish communication.

Note that in the above, all device communication history is notified in steps S1205, S1208, and S1211, but instead of all device communication history, the line switching device 603 reports other information that can be used when creating a rule proposal. Information may be notified. For example, examples of other information include the communication history of only some devices related to the organization of notification destinations, the rules themselves related to the organization of notification destinations, and all the rules possessed by the resource management device 203. Can be mentioned.

As described above, according to the second embodiment, the line switching device 603 can generate a rule proposal based on the communication information acquired from the resource management device 203, taking into account the communication status of each device. It is possible. Further, the resource management device 203 can generate rules by integrating a plurality of rule proposals. Even with the above method, as in the first embodiment, it is possible to determine the connection destination and the communication means by considering the communication status of each of the counter management device 201 and the on-board system 103.

In addition, in the second embodiment, an example was shown based on the assumption that the rule storage unit 304 exists only in the resource management device 203, but the line switching device 603 of each organization has the rule storage unit 304 and independently It may also be a form in which rules are created and applied. In this case, each line switching device 603 has the functions of an information acquisition section 31, a rule generation section 32, and a rule application section 33, and stores the generated rules in a rule storage section 304 included in the device.

The configurations shown in the embodiments above are merely examples, and can be combined with other known techniques, or can be combined with other embodiments, within the scope of the gist. It is also possible to omit or change part of the configuration.

31 Information acquisition unit, 32 Rule generation unit, 33 Rule application unit, 101 Train radio system, 102 Ground system, 103, 103a to 103c Onboard system, 201, 201a, 201b Window management device, 202 Ground communication management device, 203 Resources Management device, 204 General-purpose radio management device, 205 Private network terrestrial radio station, 301, 701 Radio control unit, 302, 702 Data processing unit, 303 Rule management unit, 304 Rule storage unit, 305 Terrestrial communication control unit, 401, 801 General-purpose Wireless interface, 402,802 Private network interface, 403 Terrestrial communication management device interface, 404,804 Processor, 405,805 Memory, 406,806 Storage, 407,807 Power supply circuit, 408,808 Battery, 504,904 Dedicated circuit, 601 General-purpose wireless terminal, 602 Private network on-board radio station, 603 Line switching device, 604 On-board communication management device, 703 Communication request type determination unit, 704 On-board communication control unit, 803 On-board communication management device interface.

Claims

A train radio system in which a counter management device provided at each command center counter for managing train operation and each of a plurality of onboard systems provided for each train formation communicate using general-purpose radio or a private network. A resource management device connected to the system,
an information acquisition unit that acquires communication information indicating the communication status of each of the plurality of on-board systems and the communication status of the counter management device;
Based on the communication information, a connection destination to which the counter management device connects among the plurality of on-board systems, and a connection destination among the general-purpose wireless and private networks that the counter management device uses to connect to the connection destination. a rule generation unit that generates a rule for determining a communication means;
A resource management device comprising:
The information acquisition unit further acquires position information of each of the plurality of formations,
The resource management device according to claim 1, wherein the rule generation unit generates the rule based on the location information.
The information acquisition unit repeatedly acquires the communication information,
The resource management device according to claim 1, wherein the rule generation unit updates the rule every time the communication information is acquired.
The resource management device according to claim 1, wherein when the rule generation unit receives a change request requesting a change of the rule from the on-board system, the rule generation unit updates the rule according to the change request. .
When the rule generation unit receives an emergency communication request that is the change request indicating that a high-importance event has occurred from the on-board system, the rule generation unit determines whether the on-board system is connected to the on-board system that is the source of the emergency communication request. The resource management device according to claim 4, wherein the rule is updated to give priority to connection.
The information acquisition unit transmits the acquired communication information to each of the plurality of on-vehicle systems,
The resource management device according to claim 1, wherein the rule generation unit generates the rule by integrating a plurality of rule proposals generated in each of the plurality of on-vehicle systems.
a rule application unit that controls the connection between the counter management device and the on-board system based on the rule;
The resource management device according to any one of claims 1 to 6, further comprising: a.
The resource management device according to claim 1;
The counter management device;
The on-vehicle system;
A train radio system characterized by comprising:
The on-board system includes a line switching device that transmits a change request requesting a change to the rule in response to the occurrence of an event in the on-board system;
When the line switching device transmits an emergency communication request that is the change request indicating that a highly important event has occurred,
9. The train radio system according to claim 8, wherein the rule generation unit updates the rule so as to give priority to connection with the on-board system that is the source of the emergency communication request.
A train radio system in which a counter management device provided at each command center counter for managing train operation and each of a plurality of onboard systems provided for each train formation communicate using general-purpose radio or a private network. A communication control method for a system, the method comprising:
acquiring communication information indicating the communication status of each of the plurality of on-board systems and the communication status of the counter management device;
Based on the communication information, a connection destination to which the counter management device connects among the plurality of on-board systems, and a connection destination among the general-purpose wireless and private networks that the counter management device uses to connect to the connection destination. generating rules for determining a means of communication;
A communication control method characterized by comprising:
A train radio system in which a counter management device provided at each command center counter for managing train operation and each of a plurality of onboard systems provided for each train formation communicate using general-purpose radio or a private network. A control circuit that controls a resource management device connected to the system,
acquiring communication information indicating the communication status of each of the plurality of on-board systems and the communication status of the counter management device;
Based on the communication information, a connection destination to which the counter management device connects among the plurality of on-board systems, and a connection destination among the general-purpose wireless and private networks that the counter management device uses to connect to the connection destination. generating rules for determining a means of communication;
A control circuit that causes the resource management device to execute.
A train radio system in which a counter management device provided at each command center counter for managing train operation and each of a plurality of onboard systems provided for each train formation communicate using general-purpose radio or a private network. A storage medium storing a program for controlling a resource management device connected to a system,
The program is
acquiring communication information indicating the communication status of each of the plurality of on-board systems and the communication status of the counter management device;
Based on the communication information, a connection destination to which the counter management device connects among the plurality of on-board systems, and a connection destination among the general-purpose wireless and private networks that the counter management device uses to connect to the connection destination. generating rules for determining a means of communication;
A storage medium that causes the resource management device to execute.