Information interconnection and intercommunication device between railway connection stations

Abstract

The invention provides an information interconnection and intercommunication device between railway track connection stations, which belongs to the technical field of communication equipment and comprises a track connection station interconnection and intercommunication cloud platform unit, a railway service data classification marking unit, a track connection station network address conversion unit and a track connection station interconnection security protection unit. The rail connection station interconnection and intercommunication cloud platform unit is responsible for integrating and storing service data in a rail connection station scene; dynamic processing and forwarding of data are realized according to automatic response of real-time service requirements; the railway service data classification marking unit is used for marking different service flows to distinguish priorities and ensure timely transmission of important service flows; the rail connection station network address conversion unit realizes dual-stack intercommunication of IPv4 and IPv6, protocol conversion can be carried out between the IPv4 and the IPv6, and seamless butt joint of railway systems of different protocol stacks can be ensured; and the rail connection station interconnection security protection unit is used for separating a control plane from a data plane and effectively managing security policies and service rules.

Description

Technical Field

[0001] The present invention relates to the technical field of communication equipment, and in particular to an information interconnection device between railway connection stations. Background Art

[0002] Nowadays, the rapid development of the Internet and communication technology has promoted the informatization process of the railway industry, but the national railway and local railway still face significant challenges in the interconnection of connecting stations. In the connecting station scenario, the national railway and local railway need to quickly connect various business data such as train scheduling, freight information, signal control, etc. to achieve efficient business collaboration of the connecting station. However, the existing communication technology solutions often fail to meet the requirements of high efficiency, safety and flexibility of the railway system when dealing with heavy data interaction requirements. Especially in the case of peak traffic and dynamic scheduling, the current solution has limitations, and the information exchange mode of the connecting stations of both parties is relatively primitive, resulting in high synchronization delay and low resource utilization, which seriously restricts the efficiency and safety of cross-line transportation of trains between connecting stations. Therefore, it is urgent to design a more intelligent and efficient information interconnection system to improve the communication capabilities and overall operational efficiency of the connecting stations.

[0003] To this end, an information interconnection system for national and local railway connection stations is designed. The system integrates cloud computing, big data analysis, and multi-service scheduling to build an efficient and intelligent cross-network communication platform. The system includes a connection station interconnection cloud platform, a railway business data classification and marking unit, a connection station network address translation unit, and a connection station interconnection security protection unit. Through the collaborative work of these functional modules, the system can achieve unified management, dynamic scheduling, and security protection of connection station data, thereby improving the resource utilization and information intercommunication capabilities of the connection station, and providing support for the intelligent development of the railway industry.

[0004] As the core of the information interconnection system, the connection station interconnection cloud platform is responsible for integrating and storing various business data of national and local railways. Based on cloud computing and big data technology, it can dynamically respond to the real-time business needs of the connection station and support efficient data storage, processing and forwarding. At the same time, the platform has cross-network scheduling and load balancing capabilities to ensure stable data transmission during peak hours, thereby improving the information interaction efficiency of the connection station.

[0005] Due to the diversity of railway services, the priorities and service quality requirements of different services vary significantly. The railway service data classification and marking unit marks various service flows to distinguish the priorities of different services during data transmission. In this way, the system can give priority to the transmission of important service flows, such as scheduling information and safety data, to ensure the timeliness and reliability of key tasks, thereby improving the overall communication efficiency under limited network resources.

[0006] At present, some local railways have sufficient funds and have completed the IPv6 upgrade of the connection station computer room, while the national railway is still mainly using IPv4 network. In order to achieve efficient interconnection between the two, the information interconnection system adopts a connection station network address translation unit that supports IPv4 and IPv6 dual stack interoperability. This device can perform protocol conversion between IPv4 and IPv6 address space, so that railway systems with different protocol stacks can be seamlessly connected.

[0007] To ensure the network security of the connection station, the system has designed a connection station interconnection security protection unit with a separate control plane and data plane. The control plane is responsible for managing the security policies and business rules of the connection station, while the data plane supports high-speed data processing and traffic forwarding. This separation design can effectively respond to frequent policy adjustment needs, and can flexibly adjust the traffic control strategy when dealing with malicious traffic and abnormal situations, achieving a balance between security and performance, and providing multi-level security protection for the connection station.

[0008] Beijing Hongshan Information Technology Research Institute Co., Ltd. proposed an intelligent system and method for railway communication, which combines 4G SDN private network module, GSM-R communication module, edge computing terminal equipment and network security management module to achieve efficient, stable and secure railway data transmission. However, this technology cannot effectively solve the problem of effective interconnection and communication between national railway and local railway connection stations: (1) National railway and local railway may use different communication protocols (such as IPv4 and IPv6) and network architectures. 4G SDN and GSM-R modules need to solve protocol conversion and adaptation problems, otherwise it will affect the seamlessness and real-time performance of data transmission. (2) There are differences in data authorization and management standards between different railway networks. Cross-network security management and device binding will increase the complexity of system configuration and may also bring authorization conflicts or security risks. (3) Although switching between 4GSDN and GSM-R networks provides redundancy, frequent switching may cause short-term communication interruptions, affecting the continuity of real-time data and having an adverse impact on scheduling and security monitoring with high real-time requirements.

[0009] China Railway Kunming Bureau Group Co., Ltd. and China Academy of Railway Sciences Group Co., Ltd. proposed an integrated solution for data interconnection and interoperability of China-Laos Railway International Transport to solve the problems of incomplete data exchange, low customs clearance efficiency and insufficient security of outbound data. However, the technology has the following shortcomings in use: (1) Different railway services have different priority requirements. How to coordinate and prioritize key business flows (such as train scheduling and signal control) is a challenge. Additional business marking equipment is required to mark the priority of data flows to ensure scheduling consistency between different systems. (2) Local railways and national railway systems have different data standards and protocols, resulting in complex format conversion when exchanging data, affecting the real-time and accuracy of interconnection and interoperability. (3) Local railways and national railway systems may have different requirements for real-time and flow control of data exchange. Especially during peak hours, the existing system may not be able to meet the needs of large-scale data transmission, resulting in information delay or loss, affecting overall scheduling efficiency and security. Summary of the invention

[0010] The purpose of the present invention is to provide an information interconnection device between railway connection stations, which further enriches the types of business interconnection between national railways and local railways and improves the efficiency of information docking by comprehensively utilizing technologies such as cloud platforms, business tags, NAT conversion and separate firewalls, so as to solve at least one technical problem existing in the above-mentioned background technology.

[0011] In order to achieve the above object, the present invention adopts the following technical solutions:

[0012] The present invention provides an information interconnection and intercommunication device between railway connection stations, comprising: a connection station interconnection and intercommunication cloud platform unit, a railway business data classification and marking unit, a connection station network address translation unit and a connection station interconnection and security protection unit; the connection station interconnection and intercommunication cloud platform unit is responsible for the integration and storage of business data in the connection station scene; it automatically responds according to real-time business needs to realize dynamic processing and forwarding of data; the railway business data classification and marking unit is used to mark different business flows to distinguish priorities and ensure timely transmission of important business flows; the connection station network address translation unit realizes dual-stack intercommunication of IPv4 and IPv6, and can perform protocol conversion between the two to ensure that railway systems with different protocol stacks can be seamlessly connected; the connection station interconnection and security protection unit is used to separate the control plane from the data plane to effectively manage security policies and business rules.

[0013] Furthermore, the interconnection cloud platform unit of the connection station includes four major functional modules: scheduling, vehicle information, cargo transportation and safety monitoring; the scheduling module includes train timetable compilation, operation diagram design and train interval control to optimize train scheduling and operation safety; the vehicle information module realizes vehicle maintenance, inspection, scheduling management and status monitoring to ensure vehicle safety and efficient use of resources; the cargo transportation module supports intelligent processing of loading and unloading management, contract management, cargo tracking and transportation plans to achieve efficient tracking of cargo flow; the safety monitoring module integrates real-time monitoring, emergency management and safety training functions to comprehensively enhance the system's safety protection capabilities.

[0014] Furthermore, the railway business data classification marking unit uses a railway business mapping table to map each business into a different differentiated service code point for different business types in the railway system. The mapping table corresponds to a unique DSCP value for each type of business, and writes the DSCP value into the differentiated service field in the Pv4 header for marking.

[0015] Furthermore, station communication services are assigned a specific DSCP value, and train dispatching and safety inspection services are mapped to other DSCP values ​​respectively. Through this mapping, network equipment identifies different types of traffic based on DSCP values ​​and classifies and processes them according to preset policies.

[0016] Furthermore, the network address translation unit of the connection station enables the local railway IPv6 network and the national railway IPv4 network to communicate with each other; the national railway IPv4 terminal sends a request to the local railway IPv6 server, but the address of the server is in IPv6 format. At this time, the DNS query component acts as a DNS resolver, and after receiving the DNS query request from the IPv4 terminal, it checks whether the target domain name has a corresponding IPv6 address. If so, the DNS query component converts the IPv6 address into the corresponding IPv4 address format and returns it to the requesting IPv4 terminal. The IPv4 terminal uses the IPv4 address returned by the DNS query component to send a data packet to the NAT conversion component.

[0017] Furthermore, the NAT conversion component is responsible for converting the received IPv4 data packets into IPv6 data packets. During the conversion process, the NAT conversion component will modify the header information of the IPv4 data packet accordingly, replace the source address with the IPv6 address of the NAT conversion component, and set the destination address to the original IPv6 destination address according to the configuration. After conversion, the data packet is sent to the target IPv6 server.

[0018] Furthermore, in the interconnection security protection unit of the connection station, the control plane is responsible for the formulation and implementation of security policies, including the filtering and monitoring of railway traffic. By monitoring network traffic in real time, the control plane can identify and respond to potential security threats and ensure the security of communications.

[0019] Furthermore, the control plane is also responsible for logging, recording all important security events and traffic information, providing a basis for subsequent auditing and analysis.

[0020] Furthermore, in the interconnection security protection unit of the connection station, the Layer 2 forwarding function is used to optimize the data forwarding efficiency so that data packets can flow quickly in the network; the topology discovery function is used to understand the network structure in real time for troubleshooting and performance optimization.

[0021] Furthermore, the data plane is used for actual packet forwarding and processing, and executes the policies issued by the control plane to ensure efficient operation of the system. Through this separation design, the national railway and local railway communication systems can flexibly respond to dynamically changing network requirements, improve overall security protection capabilities and service quality, and ensure the stability and reliability of railway communications.

[0022] Beneficial effects of the invention: The information interconnection system of the national railway and local railway connection stations proposed by the invention realizes efficient data sharing and interconnection by integrating cloud computing, big data and multi-service dispatching technology. It adopts an integrated cloud platform, combines intelligent dispatching and priority management, effectively processes dispatching information and security data, and realizes seamless connection between IPv4 and IPv6 networks through a network address translation unit.

[0023] Additional advantages of the present invention will be more clearly given in the following description or learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 This is a functional principle block diagram of the railway connection station information interconnection device described in an embodiment of the present invention.

[0026] Figure 2 This is a functional principle block diagram of the interconnection cloud platform unit of the docking station described in an embodiment of the present invention.

[0027] Figure 3This is a functional principle block diagram of the railway business data classification marking unit described in an embodiment of the present invention.

[0028] Figure 4 The present invention is a functional principle block diagram of a network address translation unit of a connection station according to an embodiment of the present invention.

[0029] Figure 5 This is a functional principle block diagram of the interconnection safety protection unit of the connection station described in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below by the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0031] It should be understood by those skilled in the art that unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this invention belongs.

[0032] It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have a meaning consistent with that in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless as defined herein.

[0033] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or groups thereof.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. Different embodiments or examples described in this specification and features of different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

[0035] To facilitate understanding of the present invention, the present invention is further explained below with reference to specific embodiments in conjunction with the accompanying drawings, and the specific embodiments do not constitute a limitation on the embodiments of the present invention.

[0036] Those skilled in the art should understand that the drawings are merely schematic diagrams of embodiments, and the components in the drawings are not necessarily necessary for implementing the present invention.

[0037] In view of the low level of information exchange between connecting stations, which limits the further improvement of train operation efficiency between stations, the present invention proposes an information interconnection system for connecting stations between national railways and local railways. The system further enriches the types of business exchange between national railways and local railways and improves the efficiency of information connection by comprehensively utilizing technologies such as cloud platform, business tag, NAT conversion and separate firewall.

[0038] In a specific embodiment of the present invention, a railway connection station information interconnection device for national railway and local railway connection stations, the device integrates cloud computing, big data analysis, NAT protocol conversion, multi-service scheduling and other technologies, builds an integrated railway cross-network communication platform, can support data exchange of different business types, realize efficient management and dynamic scheduling of connection station data, and ensure the safety and real-time information exchange between national railways and local railways. The system is composed of key modules such as the connection station interconnection cloud platform unit, the railway business data classification and marking unit, the connection station network address conversion unit and the connection station interconnection security protection unit. The connection station interconnection cloud platform unit is responsible for the integration and storage of business data in the connection station scene, including train scheduling, freight information, signal control and other business data. The platform can automatically respond according to real-time business needs to realize dynamic processing and forwarding of data. Based on cloud computing and big data technology, the platform can perform efficient data storage and scheduling, support load balancing and peak flow control in cross-network communication, ensure the stability of data transmission during peak hours, and avoid network congestion problems caused by traffic overload. The interconnection cloud platform unit of the connection station is responsible for integrating and storing the business data of the national railway and local railways. It has dynamic response and load balancing capabilities and can stably transmit data during peak hours. The railway business data classification and marking unit can mark different business flows to distinguish priorities, ensure the timely transmission of important business flows (such as scheduling information and security data), and improve communication efficiency. The network address translation unit of the connection station realizes the dual-stack intercommunication of IPv4 and IPv6, and can perform protocol conversion between the two to ensure that railway systems with different protocol stacks can be seamlessly connected. The interconnection security protection unit of the connection station separates the control plane from the data plane, effectively manages security policies and business rules, and supports high-speed data processing and traffic forwarding to deal with malicious traffic and abnormal situations. The system is highly scalable and adaptable, and can be flexibly adjusted as the railway business changes to support the needs of future intelligent development. Through intelligent scheduling and priority management, the system optimizes resource allocation, improves the information intercommunication capabilities of the connection station, and improves the safety and efficiency of railway transportation.

[0039] In a specific embodiment, the information interconnection system for national railways and local railway connection stations can optimize railway information intercommunication by comprehensively utilizing technologies such as cloud platforms, business tags, NAT conversion, and separate firewalls, thereby achieving a higher level of information intercommunication between national railways and local railways.

[0040] like Figure 1As shown, the information interconnection system network described in this embodiment is composed of two parts: the internal network of the local railway group company and the internal network of the national railway group. The internal network of the local railway group company also includes large local railway stations and the location of the local railway group company. In daily operations, large stations of local railways use a variety of key systems, including station communication systems, train dispatching systems, safety inspection systems, etc. In order to achieve real-time sharing of information, the local railway group company aggregates the system information of each station and sends it to the national railway group through the interconnection cloud platform unit of the connection station. During this process, the railway business data classification marking unit will mark the data to distinguish the traffic of different businesses.

[0041] After receiving information from local railways, the National Railway Group can conduct real-time analysis through its data processing system. These analysis results can be used to optimize train scheduling plans, formulate targeted operation strategies, and adjust the configuration of railway resources in a timely manner. In addition, local railway group companies will also obtain shared information from the National Railway Group, including the overall scheduling arrangements, network conditions, weather warnings, etc. of the national railway. Through the cloud platform, local railway group companies distribute this information to large stations and their systems of various local railways to ensure that the stations can make necessary adjustments according to the overall arrangements of the national railway.

[0042] The core part of this system consists of the connection station interconnection cloud platform unit, railway business data classification and marking unit, connection station network address translation unit and connection station interconnection security protection unit. The connection station interconnection cloud platform unit is responsible for integrating and transmitting data, the railway business data classification and marking unit is used to mark traffic to distinguish priorities, the connection station network address translation unit supports the intercommunication of IPv4 and IPv6, and the connection station interconnection security protection unit provides multi-level security protection. These units work together to ensure that information can flow smoothly and be protected under different protocols and security policies, thereby improving overall operational efficiency.

[0043] like Figure 2As shown in the figure, the interconnection cloud platform unit of the connection station adopts a modular design, covering four functional modules: scheduling, vehicle information, cargo transportation and safety monitoring. The scheduling module includes train timetable compilation, operation diagram design and train interval control, optimizing train scheduling and operation safety; the vehicle information module realizes vehicle maintenance, inspection, scheduling management and status monitoring to ensure vehicle safety and efficient use of resources; the cargo transportation module supports intelligent processing of loading and unloading management, contract management, cargo tracking and transportation plans to achieve efficient tracking of cargo circulation; the safety monitoring module integrates real-time monitoring, emergency management and safety training functions to comprehensively enhance the system's safety protection capabilities. The platform is built with a unified programming language to ensure code consistency and achieve seamless integration with other systems through standard external interfaces. The modular architecture supports flexible expansion and maintenance to meet the needs of digital and intelligent management of railway transportation.

[0044] like Figure 3 As shown, the railway service data classification and marking unit designs a set of railway service mapping tables for different service types in the railway system, such as station communication, train dispatching, and safety inspection, and maps each service to a different Differentiated Service Code Point (DSCP). The mapping table corresponds each type of service to a unique DSCP value, and writes the DSCP value into the differentiated service field in the Pv4 header for marking. Specifically, the station communication service can be assigned a specific DSCP value, and the train dispatching and safety inspection services are mapped to other DSCP values ​​respectively. Through this mapping, network equipment can identify different types of traffic according to the DSCP value and classify and process them according to the preset strategy. In the design, the mapping table specifies the DSCP value required for each service, while taking into account the characteristics of the network traffic to ensure effective traffic management and priority control. In addition, the mapping table is presented in an easy-to-update form so that it can be adjusted accordingly when the service requirements change.

[0045] like Figure 4As shown, the network address translation unit of the connection station enables the local railway IPv6 network and the national railway IPv4 network to communicate with each other. The national railway IPv4 terminal sends a request to the local railway IPv6 server, but the address of the server is in IPv6 format. At this time, the DNS query component acts as a DNS resolver. After receiving the DNS query request from the IPv4 terminal, it checks whether the target domain name has a corresponding IPv6 address. If it exists, the DNS query component converts the IPv6 address into the corresponding IPv4 address format and returns it to the requesting IPv4 terminal. Next, the IPv4 terminal uses the IPv4 address returned by the DNS query component to send a data packet to the NAT conversion component. The NAT conversion component is responsible for converting the received IPv4 data packet into an IPv6 data packet. During the conversion process, the NAT conversion component will modify the header information of the IPv4 data packet accordingly, replace the source address with the IPv6 address of the NAT conversion component, and set the destination address to the original IPv6 destination address according to the configuration. After conversion, the data packet is sent to the target IPv6 server.

[0046] like Figure 5 As shown in the figure, for the interconnection security protection unit of the connection station, the control plane is mainly responsible for the formulation and implementation of security policies, including filtering and monitoring of railway traffic. By real-time monitoring of network traffic, the control plane can identify and respond to potential security threats and ensure the security of communication. In addition, the control plane is also responsible for logging, recording all important security events and traffic information, providing a basis for subsequent audits and analysis. The Layer 2 forwarding function can optimize data forwarding efficiency and enable data packets to flow quickly in the network, while the topology discovery function helps to understand the network structure in real time, facilitating troubleshooting and performance optimization. The data plane focuses on actual data packet forwarding and processing, and executes the policies issued by the control plane to ensure efficient operation of the system. Through this separated design, the national railway and local railway communication systems can flexibly respond to dynamically changing network requirements, improve the overall security protection capabilities and service quality, and ensure the stability and reliability of railway communications.

[0047] In summary, through the railway connection station information interconnection system described in the embodiment of the present invention, when the national railway and the local railway interact with each other at the connection station, the system can intelligently identify different business types, and give priority to the transmission of key business flows such as scheduling information and security data to ensure its timeliness and reliability. When the connection station interconnection cloud platform unit described in the present invention receives data from different networks, it will not forward it immediately, but judge the data priority and dynamically allocate network resources through the intelligent scheduling module in the cloud. The network address translation unit of the connection station performs dual stack conversion on IPv4 and IPv6 protocol data to achieve seamless interconnection between different networks, reducing data delays caused by incompatible network protocols. At the same time, the interconnection security protection unit can monitor and protect the data transmission process, separate the policy control from the data forwarding function, so as to ensure safe and efficient processing of high-traffic data. When abnormal traffic or safety hazards are detected, the system will automatically take protective measures and feedback to the security control module, thereby improving the information intercommunication capability and resource utilization efficiency of the connection station, and providing a strong guarantee for the safe operation of the two-network system.

[0048] The key link of this solution is to improve the information interconnection and interoperability between the national railway and local railway connection stations by building an intelligent and efficient cross-network communication platform. First, the solution integrates cloud computing, big data analysis and multi-service scheduling technologies to build a connection station interconnection cloud platform, which can dynamically respond to real-time business needs, support efficient data storage, processing and forwarding, and have cross-network scheduling and load balancing capabilities to ensure stable data transmission during peak hours. Secondly, the railway business data classification marking unit marks the priority of different business flows to ensure the timeliness and reliability of key mission data. In order to achieve seamless connection between IPv4 and IPv6, the solution introduces the connection station network address translation unit, which supports dual-stack protocol conversion and solves the problem of protocol differences between national railways and local railways. Finally, the system separates the control plane and the data plane through the connection station interconnection security protection unit, which can quickly adjust the security strategy to deal with malicious traffic and ensure the efficiency and security of data transmission. Overall, the system not only improves the efficiency of information transmission, but also enhances the resource utilization and security protection capabilities of the connection station, providing strong support for the intelligent and efficient operation of the railway industry.

[0049] In the present invention, in addition to using NAT conversion technology to support IPv4 and IPv6 intercommunication, tunnel technology can also be considered. Tunnel technology is a technology that realizes protocol intercommunication by encapsulating another protocol data packet in an existing network protocol. Whether it is NAT conversion or tunnel technology, the ultimate goal is to achieve intercommunication between two different protocols. NAT conversion performs protocol conversion by modifying the packet header, while tunnel technology forwards by encapsulating a protocol data packet in another protocol. Both can realize cross-protocol communication in the existing network architecture, ensuring that data between different networks can flow seamlessly.

[0050] In the interconnection security protection unit of the connection station, the control plane is responsible for implementing security policies and traffic filtering. Traditional firewalls can be used to replace some security policies. Firewalls can directly filter non-compliant traffic according to the set rules, but this method is relatively simple and lacks flexible dynamic adjustment capabilities. Whether it is a firewall with a separated control plane and data plane or a traditional firewall, the ultimate goal is to ensure the security of the system and prevent network attacks or malicious traffic from affecting the normal operation of the system.

[0051] In addition to using cloud platforms for data transmission and processing, you can also consider using traditional data centers or edge computing instead of cloud platforms. Traditional data centers have stability and high performance, but lack the elastic scalability of cloud platforms. Edge computing is more suitable for processing real-time tasks with low latency and high bandwidth requirements, especially in applications such as security monitoring and vehicle scheduling at rail connection stations. Whether using cloud platforms, data centers or edge computing, the core purpose is to improve the intelligence and digitalization of railway transportation and ensure that information can flow quickly and accurately.

[0052] DSCP: DSCP stands for Differentiated Services Code Point. DSCP is a part of the IP data packet header and is used to mark the priority and service quality of traffic. Network devices can classify and prioritize data streams based on DSCP values ​​to meet the quality requirements of different services.

[0053] To sum up, in the present invention, NAT, namely network address translation, maps IP addresses so that multiple devices can share one IP address to access the external network, or communicate between networks of different protocols. Tunnel technology is a network technology that achieves intercommunication between networks of different protocols by encapsulating data packets of another protocol in one network protocol. The control plane is the logical part of the network device, responsible for formulating and distributing routing and traffic control policies, such as traffic filtering and monitoring. The data plane is the part of the network device dedicated to packet forwarding and processing, and performs the actual transmission and processing of data according to the policies issued by the control plane. The data plane is the part of the network device dedicated to packet forwarding and processing, and performs the actual transmission and processing of data according to the policies issued by the control plane. Edge computing is a distributed computing method that reduces latency and improves real-time performance by placing computing and data processing close to the data source.

[0054] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0055] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0056] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0057] These computer program instructions can also be loaded onto a computer or other programmable data processing device, and a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0058] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative work on the basis of the technical solution disclosed in the present invention should be included in the scope of protection of the present invention.

Claims

1. A railway connection station information interconnection device, characterized in that: include: The connection station interconnection cloud platform unit, railway business data classification and marking unit, connection station network address translation unit and connection station interconnection security protection unit; the connection station interconnection cloud platform unit is responsible for the integration and storage of business data in the connection station scenario; it automatically responds to real-time business needs to achieve dynamic data processing and forwarding; the railway business data classification and marking unit is used to mark different business flows to distinguish priorities and ensure the timely transmission of important business flows; the connection station network address translation unit realizes dual-stack interoperability of IPv4 and IPv6, and can perform protocol conversion between the two to ensure that railway systems with different protocol stacks can be seamlessly connected; The interconnection security protection unit of the connection station is used to separate the control plane from the data plane and effectively manage security policies and business rules.

2. The railway connection station information interconnection device according to claim 1 is characterized in that: The interconnection cloud platform unit of the connection station includes four functional modules: shift planning, vehicle information, cargo transportation and safety monitoring. The shift planning module includes train timetable compilation, operation diagram design and train interval control, optimizing train scheduling and operation safety. The vehicle information module realizes vehicle maintenance, inspection, scheduling management and status monitoring to ensure vehicle safety and efficient use of resources. The cargo transportation module supports intelligent processing of loading and unloading management, contract management, cargo tracking and transportation plans, realizing efficient tracking of cargo flow. The security monitoring module integrates real-time monitoring, emergency management and security training functions to comprehensively enhance the system's security protection capabilities.

3. The railway connection station information interconnection device according to claim 1, characterized in that: The railway service data classification marking unit uses a railway service mapping table to map each service into a different differential service code point for different service types in the railway system. The mapping table corresponds each type of service to a unique DSCP value, and writes the DSCP value into the differentiated service field in the Pv4 header for marking.

4. The railway connection station information interconnection device according to claim 3 is characterized in that: Station communication services are assigned a specific DSCP value, while train dispatching and safety inspection services are mapped to other DSCP values. Through this mapping, network devices identify different types of traffic based on DSCP values ​​and classify and process them according to preset policies.

5. The railway connection station information interconnection device according to claim 1, characterized in that: The network address translation unit of the connecting station enables the local railway IPv6 network and the national railway IPv4 network to communicate with each other; the national railway IPv4 terminal sends a request to the local railway IPv6 server, but the address of the server is in IPv6 format. At this time, the DNS query component acts as a DNS resolver. After receiving the DNS query request from the IPv4 terminal, it checks whether the target domain name has a corresponding IPv6 address. If so, the DNS query component converts the IPv6 address into the corresponding IPv4 address format and returns it to the requesting IPv4 terminal. The IPv4 terminal uses the IPv4 address returned by the DNS query component to send a data packet to the NAT conversion component.

6. The railway connection station information interconnection device according to claim 5, characterized in that: The NAT conversion component is responsible for converting the received IPv4 data packets into IPv6 data packets. During the conversion process, the NAT conversion component will modify the header information of the IPv4 data packet accordingly, replace the source address with the IPv6 address of the NAT conversion component, and set the destination address to the original IPv6 destination address according to the configuration. After conversion, the data packet is sent to the target IPv6 server.

7. The railway connection station information interconnection device according to claim 1, characterized in that: In the interconnection security protection unit of the connection station, the control plane is responsible for the formulation and implementation of security policies, including the filtering and monitoring of railway traffic. By monitoring network traffic in real time, the control plane can identify and respond to potential security threats and ensure the security of communications.

8. The railway connection station information interconnection device according to claim 7, characterized in that: The control plane is also responsible for logging, recording all important security events and traffic information, providing a basis for subsequent auditing and analysis.

9. The railway connection station information interconnection device according to claim 7, characterized in that: In the interconnection security protection unit of the connection station, the Layer 2 forwarding function is used to optimize data forwarding efficiency so that data packets can flow quickly in the network; the topology discovery function is used to understand the network structure in real time for troubleshooting and performance optimization.

10. The railway connection station information interconnection device according to claim 7, characterized in that: The data plane is used for actual packet forwarding and processing, and executes the policies issued by the control plane to ensure efficient operation of the system.

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