Novel train backbone network initial operation method and system

Abstract

The invention relates to the technical field of train network communication, in particular to a novel train backbone network initial operation method and system. The invention provides a novel train backbone network initial operation method, which comprises the following steps that a plurality of Ethernet train backbone network node devices are arranged on an A plane or a B plane based on a TSN technology; a plurality of Ethernet train backbone network node devices carry out interaction of HELLO frames, and the neighbor connection relation of the Ethernet train backbone network node devices is calculated; a plurality of Ethernet train backbone network node devices calculate train network topology by using a neighbor connection relationship and through interaction of TOPOLOGY frames; and on the basis of the established neighbor connection relationship and the train network topology, Ethernet reconnection initial operation of the train is realized. A solution strategy of AB plane ETBN interaction and loop problems is introduced into the separation architecture, initial operation of the train is achieved, and application of the TSN technology in the field of train networks is promoted.

Description

Technical Field

[0001] This invention relates to the field of train network communication technology, and more specifically, to a novel method and system for the initial operation of a train backbone network. Background Technology

[0002] The initial operation of a train coupling test involves connecting multiple trains that were originally operating independently to form a single unit at the front of the train using advanced technology. This increases the train's length and passenger capacity, and allows for preliminary joint operation testing.

[0003] The current initial operation procedure for multiple-unit trains follows the provisions of the IEC61375-2-5 standard and is designed based on the train network topology defined by the standard. Figure 1 A schematic diagram of a prior art train network topology is shown, such as... Figure 1 The train network topology shown belongs to the train Ethernet aggregation architecture. Ethernet train backbone network node devices ETBN1 and ETBN2 are connected to terminal devices ED1 and ED2 through Ethernet train formation network ECN1. Ethernet train backbone network node devices ETBN3 and ETBN4 are connected to terminal devices ED3 and ED4 through Ethernet train formation network ECN2.

[0004] ETBN (Ethernet Train Backbone Network) devices are connected via link aggregation. The initial train operation is completed by the ETBN devices using TTDP (Hypertext Transfer Protocol Secure). Once the initial operation is complete, a complete train network topology is established, enabling communication between different train formations.

[0005] With the increasing complexity of train network systems and the growing demand for data transmission, traditional Ethernet technology can no longer fully meet the high standards of real-time performance and reliability required by train network systems.

[0006] Time-Sensitive Networking (TSN) technology, as an advanced network technology, provides a high-precision and high-reliability solution for train networks by implementing functions such as time synchronization, traffic scheduling, and traffic shaping. TSN technology ensures nanosecond-level synchronization of network devices through precise clock synchronization, while data scheduling and traffic shaping are achieved through protocols such as IEEE 802.1Qbv. Through time slot control and priority scheduling mechanisms, it ensures low-latency transmission of critical data.

[0007] However, existing train Ethernet aggregation architectures are no longer suitable for the specific network architecture requirements of TSN technology. For example... Figure 1The existing aggregated network topology shown alters the TSN data flow forwarding path when an ETBN experiences an abnormal bypass, causing TSN data to fail to transmit according to the predetermined path and time slot, thus increasing transmission latency. Therefore, to meet the requirements of TSN technology, the existing aggregated network architecture must be optimized. To address these issues, current technologies propose a train network separation architecture.

[0008] Figure 2 A schematic diagram of a prior art train network decoupling architecture is shown, such as... Figure 2 The train network separation architecture shown has Ethernet train backbone network node devices ETBN-A1 and ETBN-A2 distributed in plane A, and Ethernet train backbone network node devices ETBN-B1 and ETBN-B2 distributed in plane B.

[0009] The Ethernet train backbone network node devices ETBN-A1 and ETBN-A2 are connected to the Ethernet train backbone network node devices ETBN-B1 and ETBN-B2 through a series of Ethernet grouping networks ECNN1 to ECNN1, respectively.

[0010] According to such Figure 2 The train network separation architecture shown meets the requirements of TSN technology for network topology without reducing the redundancy and reliability of the train network; however, it is currently not compatible with the initial operation method of train coupling.

[0011] To achieve initial train operation in a train network separation architecture that is compatible with a converged architecture, the following issues must be addressed:

[0012] 1) How can ETBNs in planes A and B discover each other and establish a connection table similar to an aggregation architecture? In a separate architecture, ETBNs in plane A and plane B are connected via ECN (Ethernet Train Network), while in the original aggregation architecture, ETBNs are connected via ETB (Ethernet Train Backbone Network), without needing to synchronize initial ETB operation results via ECN. Therefore, a mechanism is needed to allow ETBNs in planes A and B to exchange information.

[0013] 2) The loop problem on ETBs in a split architecture urgently needs to be addressed. When two trains are coupled together, the ETBNs in plane A and plane B will connect to each other, causing a loop structure to form in the networks containing multiple ETBNs. Since TOPOLOGY frames can be forwarded to other ETBN devices, this can potentially lead to loops of TOPOLOGY frames in the network, causing network storms and preventing normal communication in the train network. This loop phenomenon becomes even more complex and severe when multiple trains are coupled together.

[0014] Therefore, there is currently no method for initial operation of the train backbone network that can achieve a train network separation architecture based on TSN technology while maintaining compatibility with the existing train Ethernet aggregation architecture, thereby enabling centralized initial operation of trains in coupled state. Summary of the Invention

[0015] The purpose of this invention is to provide a novel method and system for initial operation of a train backbone network, which solves the problem that existing initial operation methods are difficult to implement on a train network separation architecture based on TSN technology, thereby improving the overall performance and flexibility of the train network system.

[0016] To achieve the above objectives, the present invention provides a novel method for the initial operation of a train backbone network, comprising the following steps:

[0017] Multiple Ethernet train backbone network node devices are deployed in plane A or plane B based on TSN technology;

[0018] Multiple Ethernet train backbone network node devices interact with HELLO frames to calculate the neighbor connection relationship of the Ethernet train backbone network node devices.

[0019] Multiple Ethernet train backbone network node devices utilize neighbor connections and interact through TOPOLOGY frames to calculate the train network topology;

[0020] Based on the established neighbor connections and train network topology, the initial operation of train Ethernet reconnection is realized.

[0021] In some embodiments, the plurality of Ethernet train backbone network node devices, arranged in plane A or plane B based on TSN technology, further include:

[0022] For Ethernet backbone network node devices within the same train, they interact by sending a universally unique identifier.

[0023] In some embodiments, the plurality of Ethernet train backbone network node devices, arranged in plane A or plane B based on TSN technology, further include:

[0024] The Ethernet train backbone network node devices statically set their own location plane through configuration files.

[0025] In some embodiments, the plurality of Ethernet train backbone network node devices, arranged in plane A or plane B based on TSN technology, further include:

[0026] The Ethernet train backbone network node device sets its own location plane by defining the port number it connects to.

[0027] In some embodiments, the plurality of Ethernet train backbone network node devices interact with HELLO frames and calculate the neighbor connection relationship of the Ethernet train backbone network node devices, further including:

[0028] Ethernet train backbone network node devices deployed on plane A or plane B are connected to corresponding Ethernet train backbone network node devices on another plane through an Ethernet train formation network to form a train formation.

[0029] Ethernet train backbone network node devices interact with adjacent Ethernet train backbone network node devices on the same plane via HELLO frames to obtain neighbor connection relationships on the same plane.

[0030] Ethernet train backbone network node devices send HELLO frames to Ethernet train backbone network node devices in the same group on another plane, and the Ethernet train backbone network node devices in the same group relay the HELLO frames to the adjacent Ethernet train backbone network node devices, thereby obtaining the neighbor connection relationship on another plane.

[0031] In some embodiments, the Ethernet train grouping network is configured with a virtual local area network to enable HELLO frame interaction between Ethernet train backbone network node devices and Ethernet train backbone network node devices in the same plane train group.

[0032] In some embodiments, the plurality of Ethernet train backbone network node devices calculate the train network topology using neighbor connectivity and through the interaction of TOPOLOGY frames, further including:

[0033] Each Ethernet train backbone network node is configured with a first virtual local area network and a second virtual local area network:

[0034] The first virtual local area network is used for transmitting HELLO frames;

[0035] The second virtual local area network is used for the transmission of TOPOLOGY frames and other data traffic.

[0036] In some embodiments, the plurality of Ethernet train backbone network node devices calculate the train network topology using neighbor connectivity and through the interaction of TOPOLOGY frames, further including:

[0037] Ethernet train backbone network node devices send TOPOLOGY frames to the ports that receive HELLO frames, and select a main line among different train sets based on established neighbor connections:

[0038] The main line is used exclusively for transmitting TOPOLOGY frames and other data traffic.

[0039] In some embodiments, the plurality of Ethernet train backbone network node devices calculate the train network topology using neighbor connectivity and through the interaction of TOPOLOGY frames, further including:

[0040] When an Ethernet train backbone node device malfunctions, other Ethernet train backbone node devices reselect a new main line based on the detection results of the HELLO frame.

[0041] In some embodiments, the HELLO frame is used for neighbor discovery and inspection of the communication status of the Ethernet train backbone link;

[0042] The TOPOLOGY frame is used to inform all other node devices of its neighbor discovery and to transmit and update network topology information.

[0043] To achieve the above objectives, the present invention provides a novel train backbone network system, including an Ethernet train backbone network and an Ethernet train formation network:

[0044] The Ethernet train backbone network comprises multiple Ethernet train backbone network node devices, deployed in plane A or plane B based on TSN technology:

[0045] The Ethernet grouping network is used to connect the Ethernet train backbone network node devices arranged in plane A with the corresponding Ethernet train backbone network node devices in plane B.

[0046] The Ethernet train backbone network and the Ethernet train formation network are used to implement the novel train backbone network initial operation method described above.

[0047] The present invention proposes a novel method and system for initial operation of a train backbone network, which effectively solves the problems faced by trains in the separate architecture of TSN technology. By introducing AB plane ETBN interaction and loop problem solving strategies in the separate architecture, the initial operation of trains is realized and the results of the initial operation are kept compatible with those under the aggregated architecture, thereby promoting the application of TSN technology in the field of train networks. Attached Figure Description

[0048] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0049] Figure 1 A schematic diagram of a train network topology in the prior art is shown;

[0050] Figure 2 A schematic diagram of a prior art train network separation architecture is shown;

[0051] Figure 3 A flowchart of a novel train backbone network initial operation method according to an embodiment of the present invention is disclosed;

[0052] Figure 4 A schematic diagram illustrating the transmission direction of a HELLO frame according to an embodiment of the present invention is provided.

[0053] Figure 5a A schematic diagram of HELLO frame transmission and reception is shown;

[0054] Figure 5b The interactive diagram of the TOPOLOGY frame is revealed;

[0055] Figure 6 A schematic diagram of TOPOLOGY frame loopback in a train network separation architecture is shown;

[0056] Figure 7 A schematic diagram of a loop-free ETB network according to an embodiment of the present invention is disclosed;

[0057] Figure 8 A schematic diagram of main line switching under fault modes according to an embodiment of the present invention is disclosed. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0059] This invention proposes a novel train backbone network initial operation method and system based on a split architecture using TSN technology. This ensures that the initial operation results obtained during centralized initial operation of trains are compatible with the initial operation results under the existing train Ethernet aggregation architecture, thus meeting the requirements of train coupling operation.

[0060] Figure 3 A flowchart of a novel train backbone network initial operation method according to an embodiment of the present invention is disclosed, such as... Figure 3 As shown, the present invention proposes a novel method for the initial operation of a train backbone network, comprising the following steps:

[0061] Step S1: Multiple Ethernet train backbone network node devices are deployed in plane A or plane B based on TSN technology;

[0062] Step S2: Multiple Ethernet train backbone network node devices interact with HELLO frames to calculate the neighbor connection relationship of the Ethernet train backbone network node devices.

[0063] Step S3: Multiple Ethernet train backbone network node devices calculate the train network topology by utilizing neighbor connections and interacting through TOPOLOGY frames.

[0064] Step S4: Based on the established neighbor connection relationship and train network topology, realize the initial operation of train Ethernet reconnection.

[0065] These steps will be described in detail below. It should be understood that, within the scope of this invention, the above-described technical features of this invention and the technical features specifically described below (such as in the embodiments) can be combined and related to each other to form preferred technical solutions.

[0066] Step S1: Multiple Ethernet train backbone network node devices are deployed in plane A or plane B based on TSN technology.

[0067] For configuration synchronization between two ETBN devices within the same train, interaction can be achieved by sending UUID (Universally Unique Identifier) ​​configuration messages. Once this process is complete, the UUIDs of the two ETBN devices will be consistent, ensuring consistency and coordination between the devices.

[0068] There are two main methods for statically configuring ETBN devices in their respective location planes:

[0069] The first method is through configuration files. Specifically, ETBN devices can determine their location plane by statically setting information in their configuration files. For example, if the configuration file for ETBN-A1 is set to "plane-A", it indicates that ETBN-A1 is currently located in plane A.

[0070] Another approach is that ETBN devices can also determine their location plane by defining the port numbers they connect to. Assuming the port numbers of ETBN-A1 include X1, X2, X3, and X4, according to preset rules, if connected to ports X1 and X3, it belongs to plane A, while connected to ports X2 and X4, it belongs to plane B. ETBN-A1 can then determine its location plane accordingly.

[0071] Step S2: Multiple Ethernet train backbone network node devices interact with HELLO frames to calculate the neighbor connection relationship of the Ethernet train backbone network node devices.

[0072] More specifically, the plurality of Ethernet Train Backbone Network (ETBN) devices are deployed in plane A or plane B based on TSN technology;

[0073] Ethernet train backbone network node devices located in plane A are connected to corresponding Ethernet train backbone network node devices in plane B through Ethernet train formation network (ECN) to form a train formation. Similarly, Ethernet train backbone network node devices located in plane B are connected in the same way.

[0074] Ethernet train backbone network node devices interact with adjacent Ethernet train backbone network node devices on the same plane via HELLO frames to obtain neighbor connection relationships on the same plane.

[0075] Ethernet train backbone network node devices send HELLO frames to Ethernet train backbone network node devices in the same group on another plane, and the Ethernet train backbone network node devices in the same group relay the HELLO frames to the adjacent Ethernet train backbone network node devices, thereby obtaining the neighbor connection relationship on another plane.

[0076] Figure 4 A schematic diagram illustrating the transmission direction of a HELLO frame according to an embodiment of the present invention is shown, such as... Figure 4 The train network topology shown includes at least Ethernet train backbone network node devices ETBN-A1, ETBN-A2, and ETBN-A3 distributed in plane A, and Ethernet train backbone network node devices ETBN-B1, ETBN-B2, and ETBN-B3 distributed in plane B.

[0077] ETBN-A1 arranged in plane A is connected to the corresponding ETBN-B1 in plane B through ECN to form a group;

[0078] ETBN-A2 arranged in plane A is connected to the corresponding ETBN-B2 in plane B through ECN to form a group;

[0079] ETBN-A3 arranged in plane A is connected to the corresponding ETBN-B3 in plane B through ECN to form a group;

[0080] The initial train operation is accomplished by the exchange of HELLO and TOPOLOGY frames between ETBNs.

[0081] The HELLO frame is a multicast frame with a destination MAC address of 0180c200000e, used for neighbor discovery and inspection of the communication status of Ethernet Train Backbone (ETB) links.

[0082] Figure 5a The diagram illustrating the transmission and reception of HELLO frames is shown, such as... Figure 5a As shown, each HELLO frame will only be sent to its adjacent ETBN. For example, ETBN2 will only transmit HELLO frames to ETBN1 and ETBN3, but not to other ETBNs.

[0083] A TOPOLOGY frame is a multicast frame with a destination MAC address of 0180c2000010. It is used to inform all other node devices (ETBN) of its own neighbor discovery and to transmit and update network topology information.

[0084] Figure 5b The interactive diagram of the TOPOLOGY frame is revealed, such as... Figure 5b As shown, each ETBN can transmit TOPOLOGY frames to other ETBNs to establish the physical topology. For example, ETBN2 will transmit TOPOLOGY frames to ETBN1, ETBN3, and ETBN4.

[0085] The following will combine Figure 4 The process of establishing neighbor connection relationships in step S2 of the present invention is described in detail.

[0086] Taking ETBN-A2 as an example, it obtains the adjacency relationship in the A plane by interacting with two adjacent ETBNs (ETBN-A1 and ETBN-A3) located in the same A plane through HELLO frames.

[0087] ETBN-A2, located in plane A, is connected to the corresponding ETBN-B2 in plane B via the ECN network to enable HELLO frame interaction.

[0088] To ensure consistency with the initial operating results under the aggregated network architecture (A1-B1-A2-B2-A3-B3), ETBN-A2 needs to relay HELLO frames to ETBN-B1 through ETBN-A1. That is, ETBN-A1 acts as a relay for HELLO frames, forwarding the HELLO frames sent by ETBN-A2 to ETBN-B1.

[0089] Meanwhile, messages sent from ETBN-B2 to ETBN-A3 are forwarded by ETBN-A2, ultimately forming an effect similar to the direct connection between ETBN-A2 and ETBN-B1, and between ETBN-B2 and ETBN-A3, thus realizing the neighbor connection relationship on another plane. By analogy, the neighbor connection relationship of ETBN can be established.

[0090] Therefore, the novel train backbone network initial operation method proposed in this invention configures ETBNs to relay HELLO frames and, in conjunction with current location information, ensures that HELLO frames can be accurately relayed to other ETBNs, thereby establishing ETBN neighbor connection relationships in the AB plane.

[0091] Furthermore, the Ethernet train grouping (ECN) network is configured with a virtual local area network to enable HELLO frame interaction between Ethernet train backbone network node devices and the opposite Ethernet train backbone network node devices.

[0092] Specifically, the virtual LAN configured for ECN is VLAN492.

[0093] In step S3, multiple Ethernet train backbone network node devices use neighbor connections and interact through TOPOLOGY frames to calculate the train network topology.

[0094] The calculation of the train network topology is achieved through TOPOLOGY frames.

[0095] Figure 6 A schematic diagram of a TOPOLOGY frame loopback in a train network separation architecture is shown, as follows: Figure 6 In the illustrated separate architecture, multiple loops are generated because the AB plane is connected via ECN. When two trains are coupled together, the networks containing the four ETBNs—ETBN-A1, ETBN-A2, ETBN-B1, and ETBN-B2—form a loop. TOPOLOGY frames can be forwarded to other ETBN devices, creating loops and triggering network storms, which will prevent normal communication in the train network. Therefore, these loops must be eliminated to resolve the storm problem they cause to the ETB network.

[0096] The novel train backbone network initial operation method proposed in this invention solves the above-mentioned network storm problem by configuring two virtual local area networks (VLANs) on the ETB and selecting to establish a main line between different train groups when calculating the train network topology in step S3.

[0097] Each Ethernet Train Backbone Network (ETBN) node is configured with a first virtual local area network (VLAN) and a second virtual local area network (VLAN):

[0098] The first virtual local area network (TTDP VLAN) is used for transmitting HELLO frames;

[0099] The second virtual local area network (data VLAN) is used for the transmission of TOPOLOGY frames and other data traffic.

[0100] Figure 7 A schematic diagram of a loop-free ETB network according to an embodiment of the present invention is disclosed, such as... Figure 7 As shown, in the novel train backbone network initial operation method proposed in this invention, when calculating the train network topology in step S3, the ETBN sends a TOPOLOGY frame to the port that receives the HELLO frame, and selects a main line among different train sets according to the established neighbor connection relationship (as shown by the solid line in the figure).

[0101] This primary line can be used to transmit TOPOLOGY frames and other data traffic. ETB links not selected as the primary line cannot be used to transmit data other than HELLO frames. Once the primary line is selected, loop problems are eliminated, and data can be transmitted to each ETBN.

[0102] Figure 8 A schematic diagram of main line switching under fault modes according to an embodiment of the present invention is disclosed, such as... Figure 8 As shown, the novel train backbone network initial operation method proposed in this invention, during the calculation of the train network topology in step S3, if any ETBN (Ethernet Train Backbone Network Node) in the network encounters an anomaly leading to a fault such as restart or inability to forward data, the remaining ETBNs will rely on the detection results of the HELLO frame to perform detection and reselect the main line. Subsequently, these ETBNs will be configured with a second virtual local area network to effectively avoid the faulty ETBN and ensure the continuous and stable operation of ETB communication.

[0103] Step S4: Based on the established neighbor connection relationship and train network topology, realize the initial operation of train Ethernet reconnection.

[0104] Step S4 is based on the previously established neighbor connections and train network topology to achieve the initial reconnection operation of the train Ethernet. In this stage, each node device coordinates its operating status and data transmission tasks according to the obtained network topology information, thereby ensuring the overall performance and stability of the initial operation of the train network.

[0105] Although the methods described above are illustrated and depicted as a series of actions for the sake of simplicity, it should be understood and appreciated that these methods are not limited by the order of the actions, as some actions may occur in a different order and / or concurrently with other actions from the illustrations and descriptions herein or not illustrated and described herein but which may be understood by those skilled in the art, according to one or more embodiments.

[0106] This invention proposes a novel train backbone network system, including an Ethernet train backbone network and an Ethernet train formation network:

[0107] The Ethernet train backbone network comprises multiple Ethernet train backbone network node devices, deployed in plane A or plane B based on TSN technology:

[0108] The Ethernet grouping network is used to connect the Ethernet train backbone network node devices arranged in plane A with the corresponding Ethernet train backbone network node devices in plane B.

[0109] The Ethernet train backbone network and the Ethernet train formation network are used to implement the novel train backbone network initial operation method described above.

[0110] The specific implementation details of the novel train backbone network system proposed in this invention are described in the aforementioned novel train backbone network initial operation method, so the specific details will not be repeated here.

[0111] The novel train backbone network initial operation method and system proposed in this invention effectively solves the problems faced by train initial operation in the TSN technology split architecture. By introducing AB plane ETBN interaction and loop problem solving strategies in the split architecture, the initial operation of the train is realized, and the initial operation results are kept compatible with the results under the aggregation architecture, thereby promoting the application of TSN technology in the field of train networks.

[0112] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0113] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more, unless explicitly defined otherwise.

[0114] Those skilled in the art will further appreciate that the various illustrative logic blocks, modules, circuits, and algorithm steps described in conjunction with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or a combination of both. To clearly illustrate this interchangeability between hardware and software, the various illustrative components, blocks, modules, circuits, and steps are described above in a generalized manner in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in different ways for each specific application, but such implementation decisions should not be construed as departing from the scope of the invention.

[0115] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. A novel method for initial operation of a train backbone network, characterized in that, Includes the following steps: Multiple Ethernet train backbone network node devices are deployed in plane A or plane B based on TSN technology; Multiple Ethernet train backbone network node devices interact with HELLO frames to calculate the neighbor connection relationship of the Ethernet train backbone network node devices. Multiple Ethernet train backbone network node devices utilize neighbor connections and interact through TOPOLOGY frames to calculate the train network topology; Based on the established neighbor connections and train network topology, the initial operation of train Ethernet reconnection is realized.

2. The novel train backbone network initial operation method according to claim 1, characterized in that, The plurality of Ethernet train backbone network node devices, deployed in plane A or plane B based on TSN technology, further include: For Ethernet backbone network node devices within the same train, they interact by sending a universally unique identifier.

3. The novel train backbone network initial operation method according to claim 1, characterized in that, The plurality of Ethernet train backbone network node devices, deployed in plane A or plane B based on TSN technology, further include: The Ethernet train backbone network node devices statically set their own location plane through configuration files.

4. The novel train backbone network initial operation method according to claim 3, characterized in that, The plurality of Ethernet train backbone network node devices, deployed in plane A or plane B based on TSN technology, further include: The Ethernet train backbone network node device sets its own location plane by defining the port number it connects to.

5. The novel train backbone network initial operation method according to claim 1, characterized in that, The multiple Ethernet train backbone network node devices interact with each other using HELLO frames, and calculate the neighbor connection relationship of the Ethernet train backbone network node devices, further including: Ethernet train backbone network node devices deployed on plane A or plane B are connected to corresponding Ethernet train backbone network node devices on another plane through an Ethernet train formation network to form a train formation. Ethernet train backbone network node devices interact with adjacent Ethernet train backbone network node devices on the same plane via HELLO frames to obtain neighbor connection relationships on the same plane. Ethernet train backbone network node devices send HELLO frames to Ethernet train backbone network node devices in the same group on another plane, and the Ethernet train backbone network node devices in the same group relay the HELLO frames to the adjacent Ethernet train backbone network node devices, thereby obtaining the neighbor connection relationship on another plane.

6. The novel train backbone network initial operation method according to claim 5, characterized in that, The Ethernet train formation network is configured with a virtual local area network to enable HELLO frame interaction between Ethernet train backbone network node devices and Ethernet train backbone network node devices in the same formation on another plane.

7. The novel train backbone network initial operation method according to claim 1, characterized in that, The multiple Ethernet train backbone network node devices utilize neighbor connections and interact through TOPOLOGY frames to calculate the train network topology, further including: Each Ethernet train backbone network node is configured with a first virtual local area network and a second virtual local area network: The first virtual local area network is used for transmitting HELLO frames; The second virtual local area network is used for the transmission of TOPOLOGY frames and other data traffic.

8. The novel train backbone network initial operation method according to claim 7, characterized in that, The multiple Ethernet train backbone network node devices utilize neighbor connections and interact through TOPOLOGY frames to calculate the train network topology, further including: Ethernet train backbone network node devices send TOPOLOGY frames to the ports that receive HELLO frames, and select a main line among different train sets based on established neighbor connections: The main line is used exclusively for transmitting TOPOLOGY frames and other data traffic.

9. The novel train backbone network initial operation method according to claim 8, characterized in that, The multiple Ethernet train backbone network node devices utilize neighbor connections and interact through TOPOLOGY frames to calculate the train network topology, further including: When an Ethernet train backbone node device malfunctions, other Ethernet train backbone node devices reselect a new main line based on the detection results of the HELLO frame.

10. The novel train backbone network initial operation method according to claim 1, characterized in that, The HELLO frame is used for neighboring devices to discover and check the communication status of Ethernet train backbone links. The TOPOLOGY frame is used to inform all other node devices of its neighbor discovery and to transmit and update network topology information.

11. A novel train backbone network system, characterized in that, This includes the Ethernet train backbone network and the Ethernet train formation network: The Ethernet train backbone network comprises multiple Ethernet train backbone network node devices, deployed in plane A or plane B based on TSN technology: The Ethernet grouping network is used to connect the Ethernet train backbone network node devices arranged in plane A with the corresponding Ethernet train backbone network node devices in plane B. The Ethernet train backbone network and the Ethernet train formation network are used to implement the novel train backbone network initial operation method as described in any one of claims 1 to 10.

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