Wireless scheduling system and method for urban rail transit

Abstract

The invention provides a wireless dispatching system and method for urban rail transit, and the system comprises a wireless cluster dispatching subsystem, a cluster controller is used for signaling interaction management, a cluster dispatching desk is used for transmitting a dispatching instruction to a train, and a unified service platform is used for managing the operation information of each train of each line; a network management server is used for managing the state of equipment of the whole system and processing alarm information, and a network management client is used for querying in the network management server and carrying out visualization; the audio and video recording server is used for processing and storing the audio and video files generated by the wireless cluster scheduling subsystem, and the audio and video recording client is used for calling the audio and video files; the visual handheld equipment is deployed at any position in each train, can move and is used for being in communication connection with the cluster dispatching desk or other visual handheld equipment; and the network security device is deployed in the whole system in a distributed manner and is used for ensuring data transmission security.

Description

Technical Field

[0001] The present invention relates to the technical field of urban rail transit, and in particular to a wireless dispatching system and method for urban rail transit. Background Art

[0002] Wireless dispatching systems play a vital role in urban rail transit. They are the core system for real-time information exchange between trains, dispatching centers, and other parties, ensuring normal data transmission and command issuance to achieve efficient and safe operation of urban rail. Among them, the demand for cross-line collaboration is becoming increasingly prominent.

[0003] In related technologies, the existing dispatching system relies on private network communication technology to build a wireless dispatching architecture, but the current technical means have the following obvious defects: the coverage of the private network is limited to single-line deployment, and communication between different lines needs to be bridged across the network through physical wired links, resulting in significant delays in cross-line dispatching command interactions, especially in emergency situations. It is difficult to achieve dynamic allocation of multi-route resources; the dispatching terminal mostly uses a fixed operating console bound to wired communication equipment, and the staff cannot access the dispatching center's visual dispatching interface in real time during mobile inspections or emergency response, which seriously restricts dispatching efficiency; in addition, the existing system has insufficient compatibility with new wireless standards such as EUHT, and the existing resource integration and utilization capabilities are difficult to meet the needs of high-parallel audio and video transmission.

[0004] Based on the above analysis of the development status of this technology field, the existing technology lacks a solution to define a wireless cluster dispatching subsystem to integrate multi-line train operation information and issue dispatching instructions, configure a visual handheld device to communicate with the cluster dispatching console in the dispatching subsystem, and obtain visual dispatching information in a mobile scenario. Summary of the Invention

[0005] The purpose of the present invention is to provide a wireless dispatching system and method for urban rail transit, aiming to solve the above-mentioned problems in the prior art.

[0006] According to a first aspect of an embodiment of the present invention, a wireless dispatching system for urban rail transit is provided, comprising:

[0007] The wireless trunking dispatching subsystem includes a trunking controller, a trunking dispatching console, and a unified service platform. The trunking controller is used for signaling interaction management, the trunking dispatching console is used to send dispatching instructions to trains, and the unified service platform is used to manage the operation information of each train on each line.

[0008] The network management subsystem includes a network management server and a network management client. The network management server is used to manage the status of all system devices and process alarm information, while the network management client is used to query and visualize the network management server.

[0009] The recording and video subsystem includes a recording and video server and a recording and video client. The recording and video server is used to process and store the audio and video files generated by the wireless trunking scheduling subsystem, and the recording and video client is used to retrieve the recording and video files.

[0010] Visual handheld devices are deployed anywhere in each train and are movable, used to communicate with the cluster dispatch console or other visual handheld devices;

[0011] Network security devices are distributed throughout the system to ensure data transmission security.

[0012] According to a second aspect of an embodiment of the present invention, a wireless scheduling method for urban rail transit is provided, comprising:

[0013] Through the cluster controller signaling interaction management, the cluster dispatching console sends dispatching instructions to the train, and the unified service platform manages the operation information of each train on each line. Among them, the cluster controller, cluster dispatching console and unified service platform constitute the wireless cluster dispatching subsystem;

[0014] The network management server manages the status of all system devices and processes alarm information. The network management client queries and visualizes the information on the network management server. The network management server and network management client constitute the network management subsystem.

[0015] The audio and video files generated by the wireless trunking scheduling subsystem are processed and stored by the recording and video server, and the recording and video client is used to retrieve the recording and video files. The recording and video server and the recording and video client constitute the recording and video subsystem;

[0016] Through the visual handheld device cluster dispatch console or communication connection with other visual handheld devices, wherein the visual handheld device is deployed at any position in each train and is movable;

[0017] The security of data transmission is ensured by network security devices, which are distributed throughout the system.

[0018] The technical solution provided by the embodiment of the present invention includes the following beneficial effects: a wireless dispatching system including a wireless cluster dispatching subsystem, a network management subsystem, a recording and video recording subsystem, a visual handheld device and a network security device is designed to form a dispatching mode with complete functions for the entire process of urban rail transit; the train operation information of each urban rail transit line is managed in the wireless cluster dispatching subsystem, and the command and dispatch of the train can be completed without the need for physical link cross-network bridging, solving the dispatching fragmentation problem caused by the independent operation of each train line; and the visual handheld device can obtain dispatching instructions at any position on the train, thereby improving dispatching efficiency.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 is a schematic diagram of a wireless dispatching system for urban rail transit according to an embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of a cluster dispatching console according to an embodiment of the present invention;

[0023] Figure 3 is a schematic diagram of a scheduling system architecture according to an embodiment of the present invention;

[0024] Figure 4 This is a flow chart of a wireless dispatching method for urban rail transit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below in conjunction with the drawings in one or more embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this document.

[0026] System Example

[0027] According to an embodiment of the present invention, a wireless dispatching system for urban rail transit is provided, which includes a wireless trunking dispatching subsystem, a network management subsystem, a recording and video recording subsystem, a visual handheld device, and a network security device;

[0028] The system architecture is set up as:

[0029] The wireless trunking dispatch subsystem, network management subsystem, audio and video recording subsystem, visual handheld devices, and network security devices use switches as transmission backbone base stations. TETRA narrowband trunking, B-TrunC broadband trunking, and EUHT ultra-wideband trunking coexist in communication and transmission from the transmission backbone base station to each subsystem or device. LAN main line communication and transmission are used between dispatch console hosts.

[0030] In other words, wireless devices connect to trackside wireless base stations through cluster technology, and then transmit wireless data to switches serving the core backbone network, jointly ensuring secure system transmission. The wireless cluster dispatching subsystem, network management subsystem, and recording and video recording subsystem can communicate over both private and public networks. The dual-channel communication link automatically switches to the private network to transmit key dispatching instructions when the public network is congested or fails, ensuring communication reliability in extreme scenarios.

[0031] TETRA narrowband trunking is a flexible and comprehensive digital trunking standard that integrates dispatch calls, wireless calls, short data, and packet data transmission. It features common frequencies, shared equipment, and shared services, making it widely used in digital trunking communications for subways, public security, and other sectors. However, its use of a 25kHz frequency bandwidth limits its application in high-speed data services in subways.

[0032] B-TrunC is a TD-LTE-based standard designated by the Broadband Trunk Industry Alliance. The B-TrunC system adds multimedia dispatching capabilities to voice trunked communications. In addition to end-to-end broadband trunked communications, it also provides high-speed wireless data bearer capabilities. This allows it to simultaneously carry other wireless data services while maintaining the high priority of CBTC (Cell Train Control) signals.

[0033] EUHT is a communication technology independently developed by my country that can solve the problem of "mobile bandwidth integration". Compared with other mobile communication technologies, EUHT has the advantages of "three highs and three lows", namely "high speed, high bandwidth, high stability" and "low latency, low cost, and low power consumption".

[0034] According to the above description, B-TrunC and EUHT have advantageous prospects for wireless dispatching of rail transit. However, the existing wireless dispatching system is not compatible with new wireless standards such as EUHT and B-TrunC. In order not to affect the operation of urban rail transit during the transformation process, EUHT and B-TrunC cannot immediately replace TETRA narrowband trunking. Therefore, in the embodiment of the present invention, the three communication standards coexist.

[0035] In addition, the unified service platform, network management server and recording and video recording server are deployed on a general server;

[0036] A general-purpose server is a standardized modular computing device that deploys components with higher computing or management requirements on a general-purpose server. By integrating resources, it simplifies the system maintenance process and reduces computing complexity and costs.

[0037] Figure 1 FIG is a schematic diagram of a wireless dispatching system for urban rail transit according to an embodiment of the present invention. Figure 1 As shown, the wireless dispatching system for urban rail transit according to an embodiment of the present invention specifically includes:

[0038] The wireless trunking dispatching subsystem 10 is used to obtain the train operation information of each urban rail transit line and complete the train command and dispatch;

[0039] The wireless trunking dispatching subsystem 10 includes a trunking controller, a trunking dispatching console, and a unified service platform. The trunking controller is used for signaling interaction management, the trunking dispatching console is used to send dispatching instructions to trains, and the unified service platform is used to manage the operation information of each train on each line.

[0040] The cluster dispatch console specifically includes: a dispatch console host, speakers, microphones and computer peripherals. Figure 2 Schematic diagram of a cluster dispatching console according to an embodiment of the present invention. Figure 2 The figure shows the design layout of the cluster dispatch console. The combined design of the dispatch console host and multi-channel audio equipment (main / sub-speakers, microphones) supports the parallel transmission and reception of dispatch instructions and multi-line voice interaction, avoiding the command conflicts that are prone to occur with traditional single-channel equipment. The main speaker ensures the clear broadcast of key dispatch instructions, and the sub-speaker serves as a redundant backup to maintain uninterrupted voice communication in the event of a main device failure, ensuring the continuity of dispatch instruction transmission. The computer peripheral expansion interface is compatible with a variety of input devices, and the microphone and computer peripherals work together to build a complete human-computer interaction interface, improving the convenience of dispatch instruction input and feedback.

[0041] The number of cluster dispatching desks can be one or more, and multiple dispatching desk hosts communicate with each other through the LAN main line. Multiple dispatching desks can realize the precise division of labor for different tasks such as different lines, different areas, traffic dispatching and power dispatching according to lines, areas or functions, thereby improving dispatching efficiency.

[0042] The cluster controller is specifically used for:

[0043] Cluster control is achieved through the MCX standard interface protocol, including device access identification and authority management, interactive control of signaling used to control communication, interactive data encoding, decoding and transmission, and communication network management functions. It also adopts a dual backup mechanism and has hot backup capabilities.

[0044] The unified service platform interface platform functions are as follows:

[0045] (1) Radio status management: power on / off status, registration status, radio type, registration time;

[0046] (2) Train location management: train number, train number, driver number, ownership, location, and call group;

[0047] (3) SMS operations: sending, receiving, viewing text messages, and predefined SMS;

[0048] (4) Master / slave state switching: supports manual and automatic switching;

[0049] (5) Clock synchronization: connecting to the time source and providing time to the dispatching station;

[0050] (6) Equipment and interface status monitoring: scheduling server, scheduling console, database, cluster, signal, and clock interface status monitoring.

[0051] Preferably, a cluster scheduling platform can also be deployed for the management of the cluster scheduling console. The functions of the cluster scheduling platform are as follows:

[0052] (1) Audio dispatch: individual voice call, group voice call, multi-select group call, dispatch group call, emergency call;

[0053] (2) Video dispatching: video group call, video individual call;

[0054] (3) Train position application: train position display;

[0055] (4) Radio status display: Displays radio power on / off status, radio talk group, registered base stations, etc.

[0056] (5) Auxiliary scheduling: speaker identification, short message, event monitoring, interface status monitoring, and time synchronization.

[0057] The network management subsystem 12 is used to monitor the alarm information of the equipment in the system;

[0058] The network management subsystem 12 includes a network management server and a network management client. The network management server is used to manage the status of all system devices and process alarm information, and the network management client is used to query and visualize the network management server.

[0059] In the embodiment of the present invention, the network management server can monitor the working status and performance of each device in the system, including system management, configuration management, user management, fault management, performance management, topology management, etc. The functions are as follows:

[0060] (1) Unified view: topology display, alarm statistics, device information, and system status;

[0061] (2) Topology management: list display, topology query, topology modification, and topology connection;

[0062] (3) Equipment management: equipment type management, equipment list management, and equipment operation;

[0063] (4) Alarm management: alarm setting, alarm processing, alarm blocking, and alarm knowledge base;

[0064] (5) System management: user management, department management, and authority management.

[0065] The audio and video recording subsystem 14 is used to record group calls, individual calls and video calls of the visual wireless trunking dispatching subsystem, so as to record the entire audio and video process of the real-time dispatching process and provide data support for subsequent backtracking and dispatching decision optimization.

[0066] The recording and video subsystem 14 includes a recording and video server and a recording and video client. The recording and video server is used to process and store the audio and video files generated by the wireless trunking scheduling subsystem, and the recording and video client is used to retrieve the recording and video files.

[0067] The audio and video recording server is specifically used for: compressing and encoding the recorded audio and video streams through the audio and video encoder, and the decoding function is realized through the built-in audio and video decoder. It can compress and encode the real-time recorded audio and video streams, reduce the space occupied by data storage, alleviate the storage pressure in long-term audio and video recording scenarios, obtain the decoded data and store it; store the decoded audio and video data, which can be directly used for subsequent review, analysis or use as evidence, avoiding delays or quality loss caused by the need for secondary decoding of compressed data; balance storage efficiency and data availability, which not only guarantees the long-term storage capacity of audio and video recordings, but also ensures the convenience and accuracy of data retrieval.

[0068] The functions of the audio and video recording subsystem 14 include:

[0069] (1) All calls can be recorded and recorded;

[0070] (2) Audio and video files must be stored on the audio and video server or audio and video client;

[0071] (3) Audio and video files can be stored for 3 months or more. When the storage medium space reaches a certain limit, an alarm will be issued; when the medium has no space, the original file will be overwritten according to certain rules;

[0072] (4) Audio and video files are manageable: For the saved audio files, the functions of query, playback, deletion (including batch deletion) are provided; query conditions include caller, called party, start and end time points, etc.

[0073] (5) All audio and video files can generally only be searched and cannot be copied, changed or deleted at will. Only authorized users can copy, change or delete them.

[0074] In the process of interacting with other modules in the wireless dispatch system, it has the following functions:

[0075] (1) Voice group call: A half-duplex voice call to a group initiated by a terminal or dispatch console;

[0076] (2) Individual voice call: A full-duplex voice call established between two terminals, including between terminals and between a terminal and the dispatch console;

[0077] (3) Video group call: A video group call service initiated by a terminal or dispatch console for a group;

[0078] (4) Video call: A two-way video call established between two terminals, including between terminals and between a terminal and the dispatch console. Both parties in the video call can hear each other's voice and see each other's video at the same time;

[0079] (5) Video push to group: A group call service initiated by the dispatch center for a group that only includes video streams. The video source comes from the dispatch center.

[0080] (6) Video forwarding to group: A video-only group call service initiated by the dispatch center for a group. The video comes from other terminals or video sources. The forwarded video stream does not pass through the dispatch center, but is directly forwarded from the core network to users in the group.

[0081] (7) Video pull-up: A one-way video session initiated by the dispatching console uploads the video of the designated terminal to the dispatching console;

[0082] (8) Video backhaul: A one-way video session initiated by a terminal, which uploads the terminal’s video to the dispatch console;

[0083] (9) Video push to a single user: A one-way video session initiated by the dispatching station sends the video from the dispatching station to a designated single terminal;

[0084] (10) Video forwarding to a single user: A one-way video session initiated by the dispatching station directly forwards the video of a specified terminal to another terminal via the cluster core network. The forwarded video stream does not pass through the dispatching station.

[0085] (11) Emergency call: Emergency call has the highest priority in the system. The user presses the emergency call button to initiate an emergency call service. The user does not need to dial the number. The terminal automatically dials the emergency call number.

[0086] (12) Short message: A terminal or dispatch station sends or receives a short message to another terminal or dispatch station;

[0087] (13) All call: A one-way voice call initiated by the dispatch center. All system users participate in the call. Users can only listen but cannot speak.

[0088] (14) Multicast call: A one-way voice call or video call initiated by the dispatch station to all users in a group. Other users can only listen but cannot speak.

[0089] (15) Multi-select group call: The dispatch console sets multiple talk groups into a multi-select group; the dispatch console's voice can be heard in the entire multi-select group, but the voice of each member can only be heard in the original talk group;

[0090] (16) Dispatch group call: The dispatch station sets multiple talk groups as one dispatch group; the dispatch station's voice can be heard in the entire dispatch group, and the voices of other members of different talk groups can also be heard by each other in the dispatch group;

[0091] (17) Dynamic reorganization: The dispatch console creates and deletes groups in the system, adds and deletes members from a group, and modifies group attributes;

[0092] (18) Forced Interruption and Forced Disconnection: Forced Interruption means that a dispatch station with authority can interrupt an ongoing group call and obtain the right to speak in the current group call. The dispatch station can exit the interrupted group call, and the group call will continue to be maintained; Forced Disconnection means that a dispatch station with authority forcibly releases a group call or individual call, releasing the channel.

[0093] (19) Dispatcher monitoring: The dispatcher monitors ongoing individual or group calls, or monitors a designated user / group. When the user / group participates in a call, the core network automatically sends the call details to the dispatcher. The dispatcher does not obtain the right to speak during the monitoring process. The monitored terminal does not display or prompt anything during the initiation, progress, and termination of monitoring.

[0094] (20) Environmental monitoring: A one-way voice call initiated by the dispatching station. The dispatching station turns on the microphone and transmitter of the designated terminal through the air interface, thereby transmitting the sounds around the terminal to the dispatching station for monitoring. When the environmental monitoring is initiated, in progress, or ended, the terminal does not display or prompt anything. The environmental monitoring function does not affect the operation and service of the terminal.

[0095] (21) Environmental Monitoring: A one-way visual call initiated by the dispatch center. The dispatch center activates the microphone, camera, and transmitter of a designated terminal via the air interface, thereby transmitting the sound and image surrounding the terminal to the dispatch center for monitoring. The terminal does not display or prompt any information when environmental monitoring is initiated, in progress, or terminated; the environmental monitoring function does not hinder the terminal's operations or services.

[0096] Preferably, the storage capacity of the audio and video recording server is set between 1T and 2T. Such a storage capacity configuration can meet the decoding and storage requirements of the audio and video codec, while preventing excessive storage capacity from wasting resources. Specifically, different storage spaces are allocated according to the different audio and video encoding and decoding processes corresponding to voice calls and video calls:

[0097] (1) Voice call: AMR code is converted to MP3, and MP3 uses stereo sound;

[0098] The monophonic voice coding rate is 160 kbps. Based on 10,000 voice calls per day, each lasting 60 seconds, the calculation is: 160 kbps * 60 (s) * 10,000 / 8 (Byte) = 12 GB.

[0099] The storage capacity for different durations of voice calls in the embodiment of the present invention is shown in Table 1:

[0100] Table 1. Storage capacity calculation table for voice calls of different durations

[0101] Duration Amount (Gbytes) Remark 1 day 12 — 1 month 360 Calculated based on 30 days 3 months 1080 —

[0102] Calculated based on 30 days per month; 1G = 1000*1000*1000 bytes.

[0103] (2) Video call: The video file format is flv. After encoding, the audio is in MP3 format and the video is in h264 format.

[0104] Calculation based on 720P video (YUV420 Y:U:V = 4:2:0 = 2:1:0, data length in memory is width * light * 3 / 2, and the H.264 compression rate is 1%): 720 * 480 * 25 (frames) * 1 (channel) * 1.5 (byte) / 100 = 0.1296 MB / s; assuming 1000 video calls per day, each lasting 60 seconds: (0.1296 * 60 + 1.2) * 1000 = 8.976 GB;

[0105] Table 2 shows the storage capacity for video calls of different durations in the embodiment of the present invention.

[0106] Table 2. Storage capacity calculation table for video calls of different durations

[0107]

[0108]

[0109] Among them: each month is calculated as 30 days; 1G = 1000*1000*1000 bytes;

[0110] In summary, the total volume of recorded data for three consecutive months is 1080GB, and the total volume of video data is 807.84GB. The recording system automatically records based on voice call activity. When a voice resource is inactive, the system does not generate any recording data. Group calls rarely last more than 60 seconds, and the number of video calls per day rarely reaches 1000. Therefore, a 2TB storage capacity configuration can meet the storage needs of three months of recorded and video data.

[0111] A visual handheld device 16 is deployed at any position in each train and is movable, and is used for communicating with the cluster dispatching console or other visual handheld devices;

[0112] The visualization handheld device 16 is specifically used for:

[0113] Receive dispatch instructions sent by the cluster dispatch desk, and access the visual interface permitted by the unified service platform authority to assist in executing dispatch operations. Preferably, the unified service platform can also be directly deployed in a visual handheld device; collect video or edit voice in the environment, and transmit the audio and video files to the cluster dispatch desk to assist in updating dispatch instructions, that is, to support audio and video calls with dispatch center personnel.

[0114] The visualization handheld device further comprises:

[0115] Public communication and Wi-Fi modules, connected to the wireless cluster dispatching subsystem 10 for video or phone calls;

[0116] A plug-in network module is used to communicate with the trunking dispatch center when the trunking communication signal is interrupted or coverage is insufficient. Accessing the operator's communication network through the plug-in network module addresses the coverage limitations of traditional trunking communications, such as tunnels and remote areas where trunking signal blind spots may exist, ensuring that dispatch instructions can be reached at the end.

[0117] The positioning module is used to collect positioning information from visual handheld devices and send the positioning information to the cluster dispatch console. The introduction of the positioning module enables the dispatch center to understand the distribution of on-site personnel and optimize the emergency resource allocation path. The correlation mapping between location data and dispatch instructions improves the accuracy of personnel command in cross-line collaborative dispatch.

[0118] In the embodiment of the present invention, the visualization handheld devices include more than two, and the visualization handheld devices are interconnected to facilitate collaborative work between staff members.

[0119] Network security devices 18, distributed throughout the system, to ensure data transmission security;

[0120] Because communication networks are vulnerable to distributed DDoS attacks and data tampering, network security devices are deployed in wireless dispatch systems to prevent unauthorized access to critical information such as train positioning and dispatching instructions, while also ensuring the confidentiality and integrity of voice and video transmissions. This prevents network interruptions or data leaks that could lead to train mis-dispatching, loss of passenger privacy, and even operational disruptions. Because these situations can occur at any end of the system, a distributed deployment setup is adopted.

[0121] The network security devices specifically include:

[0122] Defense equipment to monitor and block abnormal network traffic;

[0123] In this embodiment of the present invention, a defense system is deployed on the core switch, and port mirroring is set up on the switch to mirror the inbound and outbound data traffic flowing through each important communication port of the switch to the monitoring port of the detection system, achieving comprehensive detection and three-dimensional presentation of network behavior. Once bad behavior is discovered, it can be restricted by linking with the firewall or sending blocking packets.

[0124] The main functions of the defense system include:

[0125] (1) Behavior Detection: It uses a combination of techniques such as pattern matching, protocol analysis, anomaly detection, and session correlation analysis to provide users with 2- to 7-layer deep detection capabilities. It supports the detection of common behaviors including denial of service, Trojans, worms, scanning, network access, and system vulnerabilities.

[0126] (2) Application Identification: Supports intelligent identification of common Internet applications including P2P peer-to-peer technology, instant messaging, e-commerce, stock trading, online games, online TV, mobile applications, etc. based on data content rather than port number. It also supports statistical ranking of application connections, application traffic, and application hosts; and supports custom application protocols.

[0127] (3) Early warning: Notify the administrator to take further protective measures through various means such as email and text messages.

[0128] (4) Forensics: After an event is detected, the original message is recorded in full. The log can be stored locally and sent to the log server at the same time.

[0129] (5) Traffic visualization: It enables users to clearly and intuitively perceive abnormal changes in traffic, application composition, and existing behaviors within the network, providing strong information support for formulating security policies.

[0130] Network auditing equipment is used to record network operation behaviors and conduct more fine-grained audit tracking of specific users' network access behaviors and content;

[0131] In the embodiment of the present invention, the network audit device is deployed on the core switch, collects data through bypass listening, analyzes data packets and traffic information in the network, and records and counts network communication behavior and content by analyzing relevant protocols, helping to discover abnormal traffic in the network. The network audit focuses on the network access behavior of intranet user terminals and supports monitoring, restoration and auditing of multiple network application protocols. For example, it monitors and audits user logins, user login IP addresses, access times, access content, etc. that access business systems through HTTP, FTP, SMTP, etc.

[0132] Network audit equipment has real-time network data collection capabilities, powerful audit analysis capabilities, and intelligent information processing capabilities. Its main functions are as follows:

[0133] Real-time monitoring and audit evidence collection of network behavior and transmission content: This system monitors network access behavior and audits network transmission content for application access in the server area. Audit policies can be set based on management personnel's needs, such as whether employees are doing things unrelated to work during working hours, or whether confidential information of the unit has been leaked through the network. This allows for post-processing of network behavior evidence and deters potential network threats.

[0134] HTTP monitoring: intercepts, records, replays, and archives all user browsing content in the monitored network segment, including various files such as HTML files, image files, text files, etc.

[0135] Content monitoring: monitor specific application systems; monitor designated ports, IP addresses or IP segments; automatically query, analyze, compile statistics and check web page content based on set keywords or keyword combinations;

[0136] Email monitoring: Fully intercepts, records, replays, and archives emails sent and received by all users on the monitored network, including: recipient and sender's email addresses, recipient and sender's IP addresses, email subject, email content, and complete restoration of email attachments. Attachments can also be exported and compressed attachments can be decompressed up to 14 layers deep.

[0137] Remote login monitoring: Record and query TELNET usernames and passwords used to access services; record and replay user operations on the server; monitor designated ports, IP addresses, or IP address segments; automatically query, analyze, and compile statistics on transmitted content based on set keywords or keyword combinations, and generate evidence files for relevant content that meets the conditions, providing powerful monitoring evidence files. The set conditions include designated time, designated IP address or IP segment, protocol, and username; finally, generate reports based on the user-specified conditions.

[0138] Network Neighborhood Monitoring: Decodes, analyzes, and restores NETBIOS and SMB protocols; records and reports the IP addresses and names of other hosts on the "Network Neighborhood" that users have visited; records and reports various resources in the "Network Neighborhood" that users have visited, including files, directories, printers, etc.; monitors specified ports, specified IP addresses, or IP address segments; and generates reports based on user-specified conditions.

[0139] Audit data protection: The audit content is stored in a separate server and a separate database, and sufficient security protection measures are taken at the audit database boundary to ensure that no one except security management personnel can independently interrupt the audit process, delete, modify or overwrite the audit records.

[0140] Firewall, used to block illegal external access;

[0141] In an embodiment of the present invention, next-generation firewalls are deployed in series between the access link and the core switch, between the computing area access switch and the core switch, and between the security management area access and the core switch, respectively, to ensure that all cross-border access and all inflow and outflow data are communicated through their controlled interfaces, undergo security checks and are processed.

[0142] The network security device 18 establishes a multi-layered network security defense system. The firewall blocks external access restrictions; the defense system monitors and blocks abnormal network traffic in real time; and the network audit device records all network operations, providing a basis for tracing security incidents. These three elements work together to effectively safeguard the integrity, confidentiality, and availability of dispatch data, ensuring that the dispatch system operates in a secure and reliable network environment.

[0143] The above technical solutions of the embodiments of the present invention are illustrated with reference to the following drawings.

[0144] Figure 3 Schematic diagram of the scheduling system architecture of an embodiment of the present invention, such as Figure 3 As shown, the complete structure of each subsystem or module of the wireless dispatching system for urban rail transit is shown, and a switch is used as a transmission backbone base station.

[0145] To sum up, in response to the existing problems, this invention is used for a wireless dispatching system for urban rail transit, and a wireless dispatching system including a wireless cluster dispatching subsystem, a network management subsystem, a recording and video recording subsystem, a visual handheld device and a network security device is designed, forming a dispatching mode with complete functions for the entire process of urban rail transit; the system adopts B-TrunC, EUHT and TETRA coexistence as the communication standard to ensure that the normal operation tasks of urban rail transit are not affected; the train operation information of each urban rail transit line is managed in the wireless cluster dispatching subsystem, and the command and dispatch of the train can be completed without the need for physical link cross-network bridging, solving the dispatching fragmentation problem caused by the independent operation of each train line; and the visual handheld device can obtain dispatching instructions at any location on the train, which improves the dispatching efficiency and enables staff to retrieve cross-line data through the visual interface in mobile scenarios without fixed wired devices.

[0146] Method Example

[0147] According to an embodiment of the present invention, a wireless scheduling method for urban rail transit is provided. Figure 4 FIG is a flow chart of a wireless dispatching method for urban rail transit according to an embodiment of the present invention. Figure 4 As shown, the wireless dispatching method for urban rail transit according to an embodiment of the present invention specifically includes:

[0148] In step S410, the cluster controller performs signaling interaction management, sends dispatching instructions to trains through the cluster dispatching console, and manages the operation information of each train on each line through the unified service platform. The cluster controller, cluster dispatching console, and unified service platform constitute a wireless cluster dispatching subsystem.

[0149] In step S420, the network management server manages the status of all system devices and processes alarm information, and the network management client queries and visualizes the information in the network management server. The network management server and the network management client constitute the network management subsystem.

[0150] In step S430, the audio and video files generated by the wireless trunking scheduling subsystem are processed and stored by the audio and video server, and the audio and video files are retrieved by the audio and video client. The audio and video server and the audio and video client constitute the audio and video subsystem.

[0151] In step S440, the visual handheld device cluster dispatch console or other visual handheld devices are connected in communication, wherein the visual handheld device is deployed at any position in each train and is movable;

[0152] In step S450 , data transmission security is ensured by using network security devices, wherein the network security devices are distributedly deployed throughout the entire system.

[0153] To sum up, in response to the existing problems, this invention is used for a wireless dispatching method for urban rail transit, and designs a wireless dispatching system including a wireless cluster dispatching subsystem, a network management subsystem, a recording and video recording subsystem, a visual handheld device and a network security device, forming a dispatching mode with complete functions for the entire process of urban rail transit; the system adopts B-TrunC, EUHT and TETRA coexistence as the communication standard to ensure that the normal operation tasks of urban rail transit are not affected; the train operation information of each urban rail transit line is managed in the wireless cluster dispatching subsystem, and the command and dispatch of the train can be completed without the need for physical link cross-network bridging, solving the dispatching fragmentation problem caused by the independent operation of each train line; and the visual handheld device can obtain dispatching instructions at any location on the train, which improves the dispatching efficiency and enables staff to retrieve cross-line data through the visual interface in mobile scenarios without fixed wired devices.

[0154] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wireless dispatching system for urban rail transit, characterized in that: include: The wireless trunking dispatching subsystem includes a trunking controller, a trunking dispatching console, and a unified service platform. The trunking controller is used for signaling interaction management, the trunking dispatching console is used to send dispatching instructions to trains, and the unified service platform is used to manage the operation information of each train on each line. The network management subsystem includes a network management server and a network management client, wherein the network management server is used to manage the status of all system devices and process alarm information, and the network management client is used to query and visualize the network management server; The recording and video subsystem includes a recording and video server and a recording and video client, wherein the recording and video server is used to process and store the audio and video files generated by the wireless trunking scheduling subsystem, and the recording and video client is used to retrieve the recording and video files; A visual handheld device is deployed at any position in each train and is movable, and is used for communicating with the cluster dispatching console or other visual handheld devices; Network security devices are distributed throughout the system to ensure data transmission security.

2. The system according to claim 1, wherein: The unified service platform, the network management server and the audio and video recording server are deployed on a general server.

3. The system according to claim 1, wherein: The wireless cluster scheduling subsystem, the network management subsystem, the recording and video subsystem, the visual handheld device and the network security device use switches as transmission backbone base stations; The transmission backbone base station to each subsystem or device adopts the coexistence of TETRA narrowband cluster, B-TrunC broadband cluster and EUHT ultra-wideband cluster for communication and transmission, and the LAN main line is used for communication and transmission between the dispatching console hosts.

4. The system according to claim 1, wherein: The cluster controller is specifically used for: Cluster control is achieved through the MCX standard interface protocol, including device access identification and authority management, interactive control of signaling used to control communication, interactive data encoding, decoding and transmission, and communication network management functions, and a dual backup mechanism is adopted.

5. The system according to claim 1, wherein: The cluster dispatching console specifically includes: a dispatching console host, a loudspeaker, a microphone and computer peripheral equipment.

6. The system according to claim 1, wherein: The audio and video recording server is specifically used for compressing and encoding the recorded audio and video streams through an audio and video encoder, obtaining decoded data and storing the data.

7. The system according to claim 1, wherein: The visualization handheld device is specifically used for: Receive dispatch instructions sent by the cluster dispatch desk, and access the visual interface permitted by the unified service platform to assist in executing dispatch operations; collect video or edit voice in the environment, and transmit the audio and video files to the cluster dispatch desk to assist in updating dispatch instructions.

8. The system according to claim 7, characterized in that The visual handheld device further includes: a plug-in card network module, which is used for communicating and transmitting with the cluster dispatching console when the cluster communication signal is interrupted or the coverage is insufficient.

9. The system according to claim 1, wherein: The network security device specifically includes: Defense equipment to monitor and block abnormal network traffic; Network auditing equipment, used to record network operation behavior; Firewall, used to block illegal external access.

10. A wireless dispatching method for urban rail transit, used in the wireless dispatching system for urban rail transit according to any one of claims 1 to 7, characterized in that: include: Through the cluster controller signaling interaction management, the cluster dispatching console sends dispatching instructions to the train, and the unified service platform manages the operation information of each train on each line, wherein the cluster controller, the cluster dispatching console and the unified service platform constitute a wireless cluster dispatching subsystem; The network management server manages the status of all system devices and processes alarm information, and the network management client queries and visualizes the information in the network management server, wherein the network management server and the network management client constitute a network management subsystem; The audio and video files generated by the wireless trunking scheduling subsystem are processed and stored by the audio and video server, and the audio and video files are retrieved by the audio and video client, wherein the audio and video server and the audio and video client constitute the audio and video subsystem; The cluster dispatching console is connected to other visual handheld devices through a visual handheld device, wherein the visual handheld device is deployed at any position in each train and is movable; The security of data transmission is ensured by network security devices, wherein the network security devices are distributed and deployed throughout the entire system.

Images