Urban rail transit network unified wireless scheduling system and scheduling method

Abstract

The invention provides a unified wireless dispatching system and method for an urban rail transit network, and relates to the technical field of urban rail transit dispatch, and the system comprises a network bridging center which is connected with a wireless communication system of multiple systems and is used for achieving cross-system transverse communication; the line network unified scheduling service platform is used for receiving and forwarding train position information of each line and supporting scheduling data interaction; the line network integration dispatching desk integrates dispatching interfaces of wireless communication systems of various systems and supports a longitudinal dispatching function facing each line; the longitudinal scheduling interface server comprises a scheduling interface service of the wireless communication system of the system; and the train position interface server is connected with the longitudinal dispatching interface server and the network unified dispatching service platform, and is used for gathering the train position data of each line and distributing the train position data to the network unified dispatching service platform. According to the scheme provided by the invention, transverse intercommunication and longitudinal scheduling of each wireless system in the urban rail transit network can be realized.

Description

Technical Field

[0001] This document relates to the technical field of urban rail transit dispatching, and particularly to a unified wireless dispatching system and method for an urban rail transit network. Background Art

[0002] With the deepening of the networked operation of urban rail transit, the traditional single-line independent dispatching mode has been difficult to meet the requirements of cross-line coordination and dynamic resource allocation. At present, the "co-line" and "cross-line" operation modes at the network level put forward higher requirements for unified dispatching and command, and it is necessary to achieve flexible allocation of vehicle resources between different lines, coordinated emergency response, and efficient exploration of transport capacity.

[0003] There are currently three main technical systems for urban rail transit wireless dispatching systems: narrowband trunking communication based on TETRA, broadband trunking communication based on LTE (B-TrunC), and digital trunking communication based on EUHT. In scenarios such as the interconnection of newly built extension lines, the coordination of transfer hubs, cross-line shunting operations, network-level fault repair, major event guarantee, and network-wide emergency command, wireless dispatching systems of different systems and brands form "information islands" due to protocol isolation, resulting in the inability to efficiently transmit unified dispatching commands at the network level across systems, and the emergency response efficiency is limited.

[0004] Traditional multi-system on-vehicle transmission system solutions require hardware modification of trains to achieve seamless switching of vehicle-ground networks, which have problems such as high transformation costs, long implementation cycles, and interference with normal operations. In particular, it is difficult to meet the interconnection requirements between newly built broadband trunking lines and existing TETRA narrowband lines without interrupting operations. How to achieve the lightweight integration of multi-system wireless dispatching systems on the basis of protecting existing investments has become an urgent problem to be solved in the network construction of urban rail transit. Summary of the Invention

[0005] According to an embodiment of the present invention, a unified wireless dispatching system and method for an urban rail transit network are provided to solve the problem of achieving interconnection between a wireless communication broadband trunking system for a newly built line and a TETRA wireless communication narrowband trunking system for an existing old line without interfering with normal operations.

[0006] According to an embodiment of the present invention, a unified wireless dispatching system for an urban rail transit network is provided, including:

[0007] A network bridge center, connected to wireless communication systems of multiple systems, for realizing cross-system horizontal communication;

[0008] A network unified dispatching service platform, connected to a network integrated dispatching console, a vertical dispatching interface server, and a train position interface server, for receiving and forwarding train position information of each line to support dispatching data interaction;

[0009] The network integration dispatching console integrates the dispatching interfaces of wireless communication systems of multiple systems, and supports the vertical dispatching function for each line;

[0010] The vertical dispatching interface server includes the dispatching interface services of wireless communication systems of multiple systems, and is used for communicating with the line-side dispatching server to forward the train position and radio status data of each line;

[0011] The train position interface server is connected to the vertical dispatching interface server and the network unified dispatching service platform, and is used for summarizing the train position data of each line and distributing it to the network unified dispatching service platform.

[0012] According to an embodiment of the present invention, there is provided a method for unified wireless dispatching of an urban rail transit network, including:

[0013] Horizontal dispatching process: The call request from the TETRA, LTE, EUHT or visual wireless trunking dispatching system is received through the network bridge center, the target system to which the called terminal belongs is determined, and the call signaling is forwarded to the target system through the Internet gateway module corresponding to the target system; the network bridge center forwards the call signaling to the called terminal of the corresponding trunking system to achieve cross-system voice group call, voice individual call, emergency call and short message interworking.

[0014] Vertical dispatching process: The network integration dispatching console directly issues dispatching instructions such as voice group call, voice individual call, emergency call, and short message to the wireless trunking systems of each line through the integrated dispatching interface; each vertical dispatching interface server receives the train position, radio status and other data reported by the line-side dispatching server, and forwards it to the train position interface server and the network unified dispatching service platform to support network-level dispatching monitoring.

[0015] The embodiment of the present invention provides an urban rail transit network unified wireless dispatching system and dispatching method, which provides the horizontal intercommunication and vertical dispatching capabilities of each wireless system in the network. By setting up a network bridge center, the dispatching system bridges with wireless communication systems of multiple systems, supports the interconnection and intercommunication of wireless trunking dispatching systems of different systems and different brands, and realizes functions such as cross-line and cross-network voice group call, voice individual call, emergency call, short message, and video call. At the same time, devices such as a network unified dispatching service platform, an interface server, and a network integration dispatching console are set up to collect the real-time train position information of each line, and the network integration dispatching console uniformly integrates multiple dispatching interfaces to directly access and connect to wireless communication systems of multiple systems, realizing a relatively complete vertical line dispatching function within the network unified dispatching system. This transformation plan avoids the repeated construction cost of the trunking system without interfering with normal operation, realizes the interconnection and intercommunication between the wireless communication broadband trunking system of the new line and the TETRA wireless communication narrowband trunking system of the existing old line, and improves the unified dispatching and command ability while reducing costs and increasing efficiency. Brief Description of the Drawings

[0016] To more clearly illustrate the technical solutions in one or more embodiments of this specification or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments recorded in this specification. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Schematic diagram of the structure of the unified wireless dispatching system for urban rail transit network provided by the embodiments of the present invention;

[0018] Figure 2 Schematic diagram of the software architecture of the line bridge connection center provided by the embodiments of the present invention;

[0019] Figure 3 Schematic diagram of the software deployment of the line network wireless dispatching system provided by the embodiments of the present invention;

[0020] Figure 4 Schematic diagram of the software structure of the unified dispatching service platform for the line network provided by the embodiments of the present invention;

[0021] Figure 5 Schematic diagram of the software structure of the line network integrated dispatching console provided by the embodiments of the present invention;

[0022] Figure 6 Schematic diagram of the audio solution for the line network integrated dispatching console provided by the embodiments of the present invention;

[0023] Figure 7 Schematic diagram of the software structure of the API proxy provided by the embodiments of the present invention;

[0024] Figure 8 Schematic diagram of the software structure of the train position interface server provided by the embodiments of the present invention;

[0025] Figure 9 Schematic diagram of the software structure of the longitudinal dispatching interface server provided by the embodiments of the present invention;

[0026] Figure 10 Schematic diagram of the longitudinal call service process provided by the embodiments of the present invention;

[0027] Figure 11 Schematic diagram of the cross-line call service process provided by the embodiments of the present invention;

[0028] Figure 12 Schematic diagram of the train position reporting service process provided by the embodiments of the present invention;

[0029] Figure 13It is a schematic diagram of the radio station status reporting service process provided by an embodiment of the present invention;

[0030] Figure 14 It is a schematic diagram of the short message sending service process provided by an embodiment of the present invention;

[0031] Figure 15 It is a schematic diagram of the short message receiving service process provided by an embodiment of the present invention;

[0032] Figure 16 It is a schematic diagram of the cross-system group call process initiated by an LTE terminal provided by an embodiment of the present invention. Detailed implementation manners

[0033] 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 with reference to the accompanying drawings in one or more embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this document.

[0034] Term explanations

[0035] TETRA narrowband trunking is a very flexible and complete digital trunking standard, integrating dispatching calls, radiotelephones, short data, and packet data transmission. It has characteristics such as common frequency, shared equipment, shared service area, shared communication services, and cost sharing, and is widely used in digital trunking communication networks such as subways and fire protection. However, due to its use of a 25kHz frequency bandwidth, it restricts the application of wireless trunking communication in subway high-speed data services.

[0036] B-TrunC is a private broadband trunking system standard based on TD-LTE, which is formulated by the Broadband Trunking (B-TrunC) Industry Alliance. The B-TrunC system adds multimedia dispatching functions on the basis of voice trunking communication, and upgrades the voice command and dispatching ability of the previous narrowband TETRA to a multimedia command and dispatching ability integrating voice, text, image, and video. In addition to the end-to-end broadband trunking communication ability, it also provides a high-speed wireless data bearing function, which can carry other wireless data services, such as passenger information systems, on-vehicle video surveillance, and vehicle status information, on the premise of ensuring the high priority of the train control signal CBTC. B-TrunC integrating the fourth-generation mobile communication technology features flexible bandwidth, high spectral efficiency, low latency, and high reliability, and can meet the needs of professional users for voice trunking, broadband data, emergency command and dispatching, etc. It has been gradually applied in the broadband trunking communications of newly built subways, power grids, petroleum, etc., and has been deployed on Beijing Subway Line 3 and Line 12.

[0037] EUHT is a communication technology independently developed in China that can solve "mobile broadband integration" globally. It has advantages such as high reliability, low latency, large capacity, and high-speed mobile adaptability in terms of technical performance, and has advantages of low network construction cost and low operation cost economically. Compared with other mobile communication technologies, EUHT has the advantageous characteristics of "three highs and three lows", namely "high speed, high bandwidth, high stability" and "low latency, low cost, low power consumption", and has been deployed on Beijing Subway Line 11.

[0038] The urban rail transit network dispatching command center is responsible for the command and operation coordination of multiple lines overall, and has functions such as comprehensive monitoring, emergency command, information sharing, and auxiliary decision-making. At present, the urban rail transit network wireless dispatching system faces many challenges such as inconsistent system formats, difficult unified dispatching, closed network architecture, and insufficient data bandwidth. The network dispatching center cannot conduct unified dispatching and command on the lines using wireless dispatching systems with different formats, which is not conducive to improving the efficiency of networked emergency rescue and emergency command. The network dispatching command center needs to converge all the wireless dispatching systems of each line to the command center, establish a unified wireless dispatching platform, simplify system equipment, reduce system investment and maintenance costs, and improve work efficiency.

[0039] In future renovations, in order not to affect the normal operation of urban rail transit, B-TrunC and EUHT cannot immediately replace TETRA. Within a certain period (about 10-year transition period), the three communication formats will coexist.

[0040] Based on the experience of line network construction in other cities, when designing the wireless dispatching system of the line network control center, the method of setting up wireless dispatching consoles from the line center to the line network center is mostly adopted to solve the problem. However, with the continuous extension and expansion of the lines, more and more wireless dispatching consoles will seriously occupy the limited space of the dispatcher's workbench, which is not conducive to the dispatcher's daily office work and operations. At the same time, in scenarios such as the construction of new extended lines, transfer between different lines, cross-line shunting and cross-line operation, line network dispatching monitoring, networked fault repair dispatching, major event operation guarantee, and whole-network emergency command, it is also impossible to achieve on the same dispatching console, reducing the operability and manageability of the line network control center as the upper-level management and real-time monitoring unit of each line. In addition, the services of wireless dispatching systems of different systems cannot effectively interact and integrate, and each wireless dispatching system becomes a single "island", which is not conducive to improving the efficiency of unified operation command in daily and emergency situations. Taking the Beijing Subway as an example, the Beijing Subway has developed a super-large rail transit network for more than 50 years. To achieve unified command and dispatching of the whole road network, two problems have to be considered: one is the interconnection between the wireless communication broadband trunking systems of the newly built lines, and the other is the interconnection between the wireless communication broadband trunking systems of the newly built lines and the existing old-line TETRA wireless communication narrowband trunking systems. Therefore, how to solve the integration of wireless dispatching systems of multiple systems and achieve the interconnection of trunking services is an issue that must be solved in the wireless dispatching of the Beijing Subway, and it is also the practical need and inevitable choice for the development of the wireless dispatching of the Beijing Subway.

[0041] System embodiment

[0042] According to an embodiment of the present invention, a unified wireless dispatching system for an urban rail transit line network is provided. Figure 1 It is a schematic diagram of the unified wireless dispatching system for the urban rail transit line network according to the embodiment of the present invention. According to Figure 1 As shown, the unified wireless dispatching system for the urban rail transit line network according to the embodiment of the present invention specifically includes: a line network bridging center, a line network unified dispatching service platform, a line network integrated dispatching console, a vertical dispatching interface server, and a train position interface server;

[0043] The line network bridging center is connected to wireless communication systems of multiple systems and is used to achieve cross-system horizontal communication; the wireless communication systems of multiple systems include: TETRA, LTE, EUHT, and visual wireless trunking dispatching systems; the TETRA, LTE, and EUHT wireless trunking systems are private network wireless dispatching systems, and the visual wireless trunking dispatching system is a public network wireless dispatching system. The unified wireless dispatching system for the urban rail transit line network provided by the embodiments of the present application communicates and interconnects with the private network wireless dispatching system and the public network wireless dispatching system respectively, which helps to improve the unified command ability of line networked operation and the emergency rescue efficiency.

[0044] In the embodiments of the present application, the line bridge center is used to interconnect with TETRA, LTE, EUHT, and visual wireless trunking systems. Compared with the existing urban rail transit wireless dispatching systems, it avoids the repeated construction costs of the trunking systems, protects the existing investments, and achieves the purpose of cost reduction and efficiency improvement.

[0045] The line bridge center realizes the horizontal intercommunication of cross-system voice group calls, voice individual calls, emergency calls, and short messages. The line network integrated dispatching console realizes the vertical dispatching function, realizes the seamless forwarding of train dispatching instructions and emergency broadcasts, filling the industry gap. Table 1 is the vertical dispatching and horizontal intercommunication function table of the line network unified wireless dispatching system:

[0046] Table 1 Vertical dispatching and horizontal intercommunication function table of the line network unified wireless dispatching system

[0047]

[0048] It can be seen from Table 1 that the LTE system supports video combination and video format, and TETRA, LTE, EUHT, and visual wireless trunking systems all support voice group calls, voice individual calls, short messages, emergency calls, etc. To clearly understand the functions in Table 1, the vertical dispatching function and horizontal interconnection function will be introduced separately.

[0049] First, introduce the interaction process of each function in the vertical dispatching function. Unless otherwise specified in the following interaction process introduction, the users and trains involved are the users (such as portable terminals like user handheld radios or mobile phones) and trains under TETRA, LTE, EUHT, and visual wireless trunking systems that have accessed the line network unified wireless dispatching system.

[0050] (1) Video group call (excluding TETRA, EUHT): The dispatching user can initiate a video group call to the call groups under its management and receive video group calls initiated by the users within these groups.

[0051] (2) Video individual call (excluding TETRA, EUHT): The dispatching user can initiate a video individual call to a single mobile user under its management and receive video individual calls initiated by these users.

[0052] (3) Voice group call: The dispatching user can initiate a voice group call to the call groups under its management and receive voice group calls initiated by the users within these groups.

[0053] (4) Voice individual call: The dispatching user can initiate a voice individual call to a single mobile user under its management and receive voice individual calls initiated by these users.

[0054] (5) Emergency call: The dispatching user can initiate an emergency call to the mobile users under its management and receive emergency calls initiated by these users.

[0055] Emergency calls have the highest priority within the system. When a dispatching user or a mobile user initiates an emergency call and not all system resources are occupied, the system will maintain existing user calls and immediately allocate channel resources to the user initiating the emergency call. When a dispatching user or a mobile user initiates an emergency call and all system resources are occupied, the system will interrupt existing calls of low-priority users and immediately allocate channel resources to the user initiating the emergency call. The called user will receive corresponding prompts and be accompanied by special sounds.

[0056] (6) Short message: The dispatching user can send short messages to the mobile users under their management and receive short messages sent by these users.

[0057] The dispatching user can send a short message to a mobile user. First, select the target user, edit the short message, and press the send button to send it, or select a predefined short message from the list box and press the send button to send it. When the dispatching user receives a short message sent by a mobile user, it will be displayed in the receiving list and accompanied by an icon. The icons are divided into two types: read and unread, used to distinguish between read and unread messages.

[0058] (7) Call by train group number: The dispatching user can use the train group number to call an operating train (the train group number is fixed).

[0059] (8) Call by train number: The dispatching user can use the train number to call an operating train (the train number changes with each operation).

[0060] (9) Multiple selection (excluding EUHT): The dispatching user can initiate calls to multiple talkgroups under their management. The dispatching user can communicate with these talkgroups, but these different talkgroups cannot communicate with each other. The users in these talkgroups include users under TETRA, LTE, and visual wireless trunking dispatch systems that have accessed the unified wireless dispatch system of the network.

[0061] (10) Dispatch and connection (excluding EUHT): The dispatching user can initiate calls to multiple talkgroups under their management. The dispatching user can communicate with these talkgroups, and these different talkgroups can also communicate with each other. The users in these talkgroups include users under TETRA, LTE, and visual wireless trunking dispatch systems that have accessed the unified wireless dispatch system of the network.

[0062] Next, the interaction process of each function in the horizontal interconnection function will be introduced.

[0063] (1) Voice group call: Mobile users under TETRA, LTE, EUHT, and visual wireless trunking dispatch systems can conduct voice group call.

[0064] (2) Voice individual call (excluding TETRA): Mobile users under LTE, EUHT, and visual wireless trunking dispatching systems can make voice individual calls to each other.

[0065] (3) Emergency call (excluding TETRA and LTE): Mobile users under EUHT and visual wireless trunking dispatching systems can make emergency calls to each other.

[0066] (4) Short message (excluding TETRA): Mobile users under LTE, EUHT, and visual wireless trunking dispatching systems can send or receive short messages.

[0067] (5) Video individual call (excluding TETRA and EUHT): Mobile users under LTE and visual wireless trunking dispatching systems can make video individual calls to each other.

[0068] In the embodiment of the present application, by setting up a line bridge center to bridge with TETRA, LTE, EUHT, and visual wireless trunking dispatching systems, it supports the interconnection and interoperability of wireless trunking dispatching systems of different systems and different brands, and realizes functions such as voice group call, voice individual call, emergency call, short message, and video call across lines and networks. At the same time, devices such as a line network unified dispatching service platform, an interface server, and a line network integrated dispatching console are set up to converge the real-time train position information of each line, and the line network integrated dispatching console uniformly integrates multiple-party dispatching interfaces and directly accesses TETRA, LTE, EUHT, and visual wireless trunking dispatching systems, realizing a relatively complete longitudinal line dispatching function within the line network unified dispatching system. This transformation plan avoids the repeated construction cost of the trunking system without interfering with normal operations, realizes the interconnection and interoperability between the new line wireless communication broadband trunking system and the existing old line TETRA wireless communication narrowband trunking system, and improves the unified dispatching and command ability while reducing costs and increasing efficiency.

[0069] The line bridge center specifically includes:

[0070] A bridge call controller, which is used to realize call establishment, talk right control, and signaling forwarding across different systems for wireless communication systems of multiple systems;

[0071] A bridge media controller, which is used to realize the sending, receiving, and conversion of cross-system audio and video media streams for wireless communication systems of multiple systems; the bridge media controller is used to receive the analog audio stream of the TETRA system and convert it into a digital media stream, and perform codec adaptation on the audio and video media streams of the LTE and visual wireless trunking dispatching systems.

[0072] The Internet gateway module includes Internet gateways for wireless communication systems of multiple standards, which are responsible for protocol adaptation and data interaction between wireless communication systems of multiple standards. The Internet gateways for wireless communication systems of multiple standards include the TETRA Internet gateway, the LTE Internet gateway, the EUHT Internet gateway, and the Internet gateway for the visual wireless trunking dispatch system, namely Figure 2 the Tetra GW, LTE GW, EUHT GW, and MCX GW in Figure 2 , which respectively implement protocol adaptation and data interaction with the TETRA, LTE, EUHT, and visual wireless trunking dispatch systems.

[0073] The TETRA Internet gateway (i.e., TETRA GW) is an interface gateway module for interconnection with the TETRA system, which can receive and send signaling such as call establishment and talk right request, as well as audio RTP media in the TETRA system. The TETRA GW realizes interconnection with the TETRA system through the Internet gateway switch, and the TETRA GW supports the voice group call function.

[0074] The LTE Internet gateway (i.e., LTE GW) is an interface gateway module for interconnection with the LTE system, which can receive and send signaling such as call establishment, talk right request, and short message, as well as audio and video RTP media in the LTE system. The LTE GW is developed based on the provided gateway SDK to realize the interconnection between the two networks. The LTE GW has the functions of voice individual call, voice group call, and short message.

[0075] The EUHT Internet gateway (i.e., EUHT GW) is an interface gateway module for interconnection with the EUHT system, which can receive and send signaling such as call establishment, talk right request, and short message, as well as audio RTP media in the EUHT system.

[0076] The Internet gateway for the visual wireless trunking dispatch system (MCX GW) is an interface gateway module for interconnection with the visual wireless trunking dispatch system, which can receive and send signaling such as call establishment, talk right request, and short message, as well as audio and video RTP media in the visual wireless trunking dispatch system.

[0077] The horizontal interconnection of the bridging center can realize the horizontal interconnection between the EUHT system, LTE system, TETRA system, and visual wireless trunking dispatch system, including the following functions:

[0078] (1) Voice group call, horizontal group call establishment between systems, and talk right application;

[0079] (2) Voice individual call, horizontal full-duplex individual call establishment between systems;

[0080] (3) Emergency call, horizontal emergency individual call and emergency group call intercommunication between systems;

[0081] (4) Short messages, point-to-point short messages and group short messages based on signaling between systems;

[0082] (5) Video calls, horizontal individual video calls and video group calls between systems.

[0083] However, due to the different horizontal interoperability functions supported by each wireless trunking system, the horizontal interoperability function between different wireless trunking systems can only take the function of the minimum set. For example, the TETRA system only supports group call function horizontally, so any other wireless trunking system and the TETRA system only have the group call function in horizontal interoperability.

[0084] Figure 3 It is a schematic diagram of the software deployment of the line network wireless dispatching system provided by the embodiment of the present invention. As Figure 3 shown, the line network integrated dispatching console communicates with each wireless trunking communication system device through the access of each system proxy software, and the proxy software communicates with the devices of each wireless trunking communication system to realize the vertical dispatching function for different wireless trunking communication systems; it communicates with the second development side devices of each line wireless communication system through the interface server, and receives information such as train positions from each line's second development devices (second development dispatching server or RS422-Ethernet protocol converter), so as to realize functions such as train position display of the line network integrated dispatching console.

[0085] The line network unified dispatching service platform is connected to the line network integrated dispatching console, the vertical dispatching interface server and the train position interface server, and is used to receive and forward the train position information of each line to support dispatching data interaction; the line network unified dispatching service platform includes:

[0086] The main program module is used for interface management, starting, maintaining and coordinating each underlying data processing module;

[0087] The clock interface module is used to receive time information from the clock system to realize the time synchronization between the system and the clock system;

[0088] The ATS interface module is used to communicate with the train position interface server to receive the train position information of each line;

[0089] The database interface module is used for database access;

[0090] The network communication module is used to communicate with the line network integrated dispatching console and another unified dispatching service platform;

[0091] The line interface module is used to communicate with the vertical dispatching interface servers of each line to realize short message sending and receiving and radio status information collection.

[0092] Figure 4 It is a schematic diagram of the software structure of the line network unified dispatching service platform provided by the embodiment of the present invention.

[0093] As Figure 4As shown in the figure, the unified dispatching service platform for the line network includes the following modules:

[0094] The main program module is used for interface management, starting, maintaining, and coordinating each underlying data processing module.

[0095] The clock interface module is used to receive time information from the clock system to achieve time synchronization between the unified wireless dispatching system for the line network and the clock system.

[0096] The ATS interface module is used to communicate with the train position interface server and receive train position information of each line from the train position interface server.

[0097] The database interface module is used for database access and provides data support for other modules.

[0098] The network communication module is used to communicate with the line network integrated dispatching console and another unified dispatching service platform.

[0099] The line interface module is used to communicate with the longitudinal dispatching interface servers of each line to implement functions such as short message sending and receiving, and radio station status information collection.

[0100] The line network integrated dispatching console integrates the dispatching interfaces of multiple radio communication systems and supports the longitudinal dispatching function for each line. The software of the line network integrated dispatching console is installed and deployed on the host of the line network integrated dispatching console. The line network integrated dispatching console communicates with the unified dispatching service platform for the line network through the network and receives information such as train positions from the unified dispatching service platform for the line network. The line network integrated dispatching console communicates with the dispatching terminals of the TETRA system and the API proxy software (or background service) on the host of the line network integrated dispatching console through the network to implement dispatching services such as group calls, individual calls, emergency calls, and multi-selection calls. The line network integrated dispatching console needs to access the TETRA system through a dedicated dispatching terminal to complete the transmission of voice and signaling for the dispatching services of the TETRA system. The line network integrated dispatching console accesses the LTE, EUHT, and visual radio trunking dispatching systems through the proxy software, and the proxy software communicates with the B-TrunC and EUHT core networks to implement the transmission of voice and signaling for the dispatching services of these systems.

[0101] Figure 5 It is a schematic diagram of the software structure of the line network integrated dispatching console provided by the embodiment of the present invention. As Figure 5 shown, in a possible implementation, the line network integrated dispatching console includes: a foreground display module, a background signaling distribution module, a dispatching service platform module, and an API proxy software.

[0102] The foreground display module is used for the display and operation of the dispatching console page; such as calls, short message sending and receiving, train position display, multi-selection, dispatching and receiving operations, etc.

[0103] The background signaling distribution module is used to forward the signaling and interactions between the front end and each background SDK module;

[0104] The scheduling service platform module is used to access the unified line network scheduling service platform and implement message interactions between the line network fusion dispatching console and the unified line network scheduling service platform;

[0105] The API proxy software is correspondingly accessed to different wireless trunking communication systems to implement trunking dispatching services. The structure of the API proxy software is as Figure 7 shown. The structure of the API proxy software includes: an interface module, an information processing module, a dispatching console interface module, and a console interface module;

[0106] The interface module is used for log display, interface status display, and parameter setting;

[0107] The information processing module is used to process the information of the dispatching console interface and the console interface;

[0108] The dispatching console interface module is used to communicate with the dispatching console according to a unified protocol and provide remote API call support for the dispatching console;

[0109] The console interface module is used to access each wireless trunking dispatching system, is responsible for calling the dispatching API interfaces of each system, and receives the status messages returned by the system to implement information interactions with each cluster system.

[0110] The line network fusion dispatching console realizes vertical interconnection so that the voice and video of each cluster system are sent and received from the line network fusion dispatching console.

[0111] The line network fusion dispatching console needs to use an audio analog-to-digital converter to convert the audio of the TETRA system: convert the analog voice of the radio call into a digital media stream, send it through the network to the fusion dispatching console for playback, convert the digital media stream of the dispatching console microphone voice into an analog voice, and input it into the microphone voice input interface of the TETRA system host.

[0112] The LTE system, EUHT system, and visual wireless trunking dispatching system need to open the media stream processing of the dispatching development interface: that is, the fusion dispatching console software is responsible for collecting the microphone audio and camera video, and is responsible for playing the radio voice media stream and video stream. The audio solution is shown as Figure 6 shown.

[0113] The API proxy software is installed and deployed on each dispatching terminal to enable remote API calls and provide a unified interface for the network integration dispatching console software to access cluster systems of different manufacturers. It should be noted that the proxy software or dispatching SDK for LTE, EUHT, and visual wireless cluster dispatching systems needs to support running simultaneously on the network integration dispatching console host. Among them, the dispatching SDK supports the 64-bit Windows 10 Pro operating system.

[0114] The vertical dispatching interface server includes dispatching interface services for various radio communication systems and is used to communicate with the line-side dispatching server to forward train position and radio status data of each line; the vertical dispatching interface server software is installed and deployed on the interface server, responsible for communicating with each line-side dispatching server, receiving train position, radio status, etc. data of the corresponding line from the line-side dispatching server, and forwarding the train position information to the train position interface server and the radio status data to the network unified dispatching service platform.

[0115] Figure 9 It is a schematic diagram of the software structure of the vertical dispatching interface server provided by an embodiment of the present invention. As Figure 9 shown, the vertical dispatching interface server software includes the following modules:

[0116] The interface module is used to display information such as train position and radio status of the corresponding line, display the interface status with the line-side dispatching server, signal interface server, and network unified dispatching server, and can display software operation log information.

[0117] The information processing module is used to process data (train position, radio status, etc.) from the line-side dispatching server communication module, call the interface function of the network unified dispatching server communication module, send radio status data of the corresponding line to the network unified dispatching server, call the interface function of the signal interface server communication module, and send train position data of the corresponding line to the signal interface server.

[0118] The line-side dispatching server communication module is used to communicate with the line-side dispatching server according to the standard protocol and receive train position, radio status, etc. data of the corresponding line from the line-side dispatching server.

[0119] The network unified dispatching service platform communication module is used to communicate with the network unified dispatching service platform and send radio status data of the corresponding line to the network unified dispatching service platform.

[0120] The train position interface server communication module is used to communicate with the train position interface server and send train position data of the corresponding line to the train position interface server.

[0121] The train position interface server, on which the train position interface server software is installed and deployed, is used to aggregate the train position information of each line and forward the train position information to the unified network-wide dispatching service platform and the unified dispatching service platform of the visual wireless trunking dispatching system. Figure 8 It is a schematic diagram of the software structure of the train position interface server provided by an embodiment of the present invention. In a possible implementation manner, the train position interface server includes: an interface module, an information processing module, a vertical dispatching interface server communication module, and a dispatching server communication module. Specifically, the train position interface server includes:

[0122] The interface module is used to display the interface status with each vertical dispatching interface server and the unified network-wide dispatching service platform, and display the software operation log information;

[0123] The information processing module is used to process the data of each vertical dispatching interface server and maintain the train position information of each line;

[0124] The vertical dispatching interface server communication module communicates with the vertical dispatching interface servers on each line side to receive the train position information;

[0125] The dispatching server communication module is used to forward the train position information to the unified network-wide dispatching service platform.

[0126] By adopting the embodiment of the present invention, the following beneficial effects are achieved:

[0127] Through multi-system integration, cross-network communication, service integration and emergency optimization, this application constructs a set of efficient, flexible and reliable urban rail transit wireless dispatching system, which can significantly improve the network-level collaborative dispatching efficiency, enhance the ability to handle complex operation scenarios (such as cross-line cooperation and emergency event handling), and provide technical guarantee for the safe and efficient operation of urban rail transit.

[0128] Method embodiment

[0129] According to an embodiment of the present invention, a method for unified wireless dispatching of an urban rail transit network is provided. The unified wireless dispatching system of the urban rail transit network in the embodiment of the present invention specifically includes:

[0130] Horizontal dispatching process: The call request from TETRA, LTE, EUHT or the visual wireless trunking dispatching system is received through the line bridge center, the target system to which the called terminal belongs is determined, and the call signaling is forwarded to the target system through the Internet gateway module corresponding to the target system; the line bridge center forwards the call signaling to the called terminal of the corresponding cluster system to realize cross-system voice group call, voice individual call, emergency call and short message intercommunication.

[0131] When the online bridging center receives a signaling from a member terminal of the LTE system initiating a cross-system intercommunication group call or an intercommunication emergency call, it sends a call initiation message to the EUHT and TETRA systems;

[0132] When the online bridging center receives the first call establishment success message, it queries the call initiator and sends the call establishment success message to the LTE system;

[0133] After receiving the result of the terminal's voice right application in the LTE system, the line network bridging center initiates a voice right application to the EUHT and TETRA systems, and receives the voice right authorization message replied by the EUHT and TETRA systems;

[0134] In a group call, the media is sent from the system where the party with the right to speak is located to the line network bridging center, and then forwarded by the line network bridging center to the other systems participating in the group call.

[0135] The above-mentioned unified wireless dispatching method for urban rail transit is implemented based on the unified wireless dispatching system for urban rail transit provided by the above-mentioned embodiment. In the above-mentioned unified wireless dispatching method for urban rail transit, longitudinal call services and cross-line call services are involved. The service processes are respectively as follows: Figure 10 and Figure 11 shown.

[0136] In addition, it also includes train position reporting services, such as Figure 12 In a possible implementation, the method further includes:

[0137] Each longitudinal dispatch interface server receives the train position data reported by each line-side dispatch server, and forwards the train position data to the train position interface server;

[0138] The train location interface server aggregates the train location data of each line.

[0139] When performing call operations in the same wireless trunking system, the line-network fusion dispatching console can directly access TETRA, LTE, EUHT and visual wireless trunking dispatching systems to realize vertical voice and video call services.

[0140] When the line-network fusion dispatching console performs cross-line calling operations, it initiates a call request to the current page trunking system, which is then forwarded to the line-network bridging center. The bridging center forwards the call request information to other trunking systems simultaneously based on the calling object's belonging scope, thus realizing cross-line horizontal intercommunication calls among various systems.

[0141] Each line dispatching server reports train position information to the longitudinal dispatching interface server of each line through the network interface. The longitudinal dispatching interface server forwards the train position information to the train position interface server of the network center. The train position interface server of the network center aggregates the train positions of each line and sends them to the unified wireless dispatching system of the network center.

[0142] In the process of urban rail transit dispatching, in addition to longitudinal call services, cross-line call services, and train position reporting services, it also includes radio status reporting services and SMS sending and receiving services. The processes of radio status reporting services, SMS sending services, and SMS receiving services are respectively as Figure 13 、 Figure 14 and Figure 15 shown.

[0143] Each line dispatching server reports radio status information to the line interface server of each line through the network interface. Each longitudinal dispatching interface server forwards the radio status information to the unified wireless dispatching system of the network.

[0144] In a possible implementation manner, the method further includes SMS sending and receiving: Specifically, the network integrated dispatching console sends an SMS to the unified dispatching service platform of the network. The unified dispatching service platform sends the SMS to the dispatching server on the TETRA system line side through the longitudinal dispatching interface server; when the dispatching server on the TETRA system line side receives an SMS sent by a wireless terminal, it sends the SMS to the network integrated dispatching console through the longitudinal dispatching interface server and the unified dispatching service platform of the network in sequence.

[0145] Longitudinal dispatching process: The network integrated dispatching console directly issues dispatching commands such as voice group call, voice individual call, emergency call, and short message to the wireless trunking systems of each line through the integrated dispatching interface; each longitudinal dispatching interface server receives data such as train position and radio status reported by the dispatching server on the line side, and forwards them to the train position interface server and the unified dispatching service platform of the network to support network-level dispatching monitoring.

[0146] When the network bridge center receives a cross-system intercommunication group call or intercommunication emergency call initiated by a member terminal of the LTE system, it initiates a signaling and sends a call initiation message to the EUHT and TETRA systems;

[0147] When the network bridge center receives the first call establishment success message, it queries the call initiator and sends the call establishment success message to the LTE system;

[0148] After the network bridge center receives the result of the talk right application from a terminal under the LTE system, it initiates a talk right application to the EUHT and TETRA systems and receives the talk right authorization message replied by the EUHT and TETRA systems;

[0149] Among them, in group calls, the media is sent by the system where the talk right holder is located to the line bridge connection center, and then forwarded by the line bridge connection center to the other systems participating in the group call.

[0150] Figure 16 It is a schematic diagram of the cross-system group call process initiated by an LTE terminal provided by an embodiment of the present invention. As Figure 16 shown, the interaction process is as follows:

[0151] (1) The LTE system member terminal initiates a cross-system interworking group call (or interworking emergency call), and sends a group call initiation message (or interworking emergency call) to the line bridge connection center;

[0152] (2) After receiving the call initiation signaling, the line bridge connection center sends a call initiation message to the EUHT and TETRA systems;

[0153] (3) After receiving the first call establishment success message, the line bridge connection center queries the call initiator and sends the call establishment success message to the LTE system;

[0154] (4) The terminal under the LTE system applies for the talk right, sends a talk right notification to the line bridge connection center, and notifies the members of this system to speak;

[0155] (5) After receiving the talk right notification, the line bridge connection center initiates a talk right application to the EUHT and TETRA systems;

[0156] (6) After receiving the talk right application message sent by the line bridge connection center, the EUHT and TETRA systems reply with a talk right authorization message to the bridge connection center;

[0157] (7) In group calls, the media is sent by the system where the talk right holder is located to the line bridge connection center, and then forwarded by the line bridge connection center to the other systems participating in the group call.

[0158] 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated wireless dispatching system for urban rail transit network, characterized in that It includes: A wire network bridging center, which is connected to wireless communication systems of multiple systems, and is used to realize cross-system horizontal communication; A wire network unified dispatching service platform, which is connected to a wire network integrated dispatching console, a vertical dispatching interface server and a train position interface server, and is used to receive and forward train position information of each line to support dispatching data interaction; A wire network integrated dispatching console, which integrates dispatching interfaces of wireless communication systems of multiple systems and supports vertical dispatching functions for each line; A vertical dispatching interface server, which includes dispatching interface services of wireless communication systems of multiple systems and is used to communicate with a line-side dispatching server to forward train position and radio status data of each line; A train position interface server, which is connected to the vertical dispatching interface server and the wire network unified dispatching service platform, and is used to aggregate train position data of each line and distribute it to the wire network unified dispatching service platform.

2. The system according to claim 1, wherein The wireless communication systems of multiple systems include: TETRA, LTE, EUHT and a visual wireless trunking dispatching system.

3. The system according to claim 2, wherein The wire network bridging center specifically includes: A bridging call controller, which is used to realize call establishment, talk right control and signaling forwarding across systems for wireless communication systems of multiple systems; A bridging media controller, which is used to realize the receiving, sending and conversion of cross-system audio and video media streams for wireless communication systems of multiple systems; An Internet gateway module, which includes Internet gateways of wireless communication systems of multiple systems and is used for protocol adaptation and data interaction between wireless communication systems of multiple systems.

4. The system according to claim 3, wherein The bridging media controller is used to receive the analog audio stream of the TETRA system and convert it into a digital media stream, and perform codec adaptation on the audio and video media streams of the LTE and visual wireless trunking dispatching systems.

5. The system according to claim 1, wherein The wire network integrated dispatching console specifically includes: a front-end display module, a back-end signaling distribution module, a dispatching service platform module and an API proxy software; The front-end display module is used for dispatching console page display and page operation; The back-end signaling distribution module is used to forward signals and interactions between the front end and each back-end SDK module; The dispatching service platform module is used to access the wire network unified dispatching service platform to realize message interaction between the wire network integrated dispatching console and the wire network unified dispatching service platform; The API proxy software is correspondingly connected to different wireless trunking communication systems to realize trunking dispatching services.

6. The system according to claim 1, wherein The train position interface server specifically includes: An interface module, which is used to display the interface status with each vertical dispatching interface server and the wire network unified dispatching service platform, and display software operation log information; An information processing module, which is used to process data of each vertical dispatching interface server and maintain train position information of each line; A vertical dispatching interface server communication module, which communicates with each line-side vertical dispatching interface server to receive train position information; A dispatching server communication module, which is used to forward train position information to the wire network unified dispatching service platform.

7. The system according to claim 1, characterized in that, The wire network unified dispatching service platform includes: A main program module, which is used for interface management, starting, maintaining and coordinating each underlying data processing module; A clock interface module, which is used to receive time information from a clock system to realize time synchronization between the system and the clock system; The ATS interface module is used to communicate with the train position interface server and receive train position information of each line; The database interface module is used for database access; The network communication module is used to communicate with the network integration dispatching console and another unified dispatching service platform; The line interface module is used to communicate with the longitudinal dispatching interface servers of each line to realize SMS sending and receiving and radio status information collection.

8. A unified wireless dispatching method for an urban rail transit network based on the unified wireless dispatching system for an urban rail transit network according to any one of claims 1-7, characterized in that, It includes: Horizontal dispatching process: The call request from the TETRA, LTE, EUHT or visual wireless trunking dispatching system is received through the line bridge center, the target system to which the called terminal belongs is determined, and the call signaling is forwarded to the target system through the Internet gateway module corresponding to the target system; the line bridge center forwards the call signaling to the called terminal of the corresponding trunking system to realize cross-system voice group call, voice individual call, emergency call and short message interworking. Longitudinal dispatching process: The network integration dispatching console directly issues dispatching instructions such as voice group call, voice individual call, emergency call, and short message to the wireless trunking systems of each line through the integrated dispatching interface; Each longitudinal dispatching interface server receives data such as train position and radio status reported by the line-side dispatching server, and forwards it to the train position interface server and the network unified dispatching service platform to support network-level dispatching monitoring.

9. The method according to claim 8, wherein The horizontal dispatching process further includes a cross-system group call process: when the line bridge center receives a cross-system interworking group call or emergency call initiated by an LTE system terminal, it sends a call initiation message to the EUHT and TETRA systems; After the line bridge center receives the first call establishment success message, it queries the call initiator and sends it to the LTE system; after the line bridge center receives the talk right application result of the LTE system terminal, it initiates a talk right application to the EUHT and TETRA systems and receives the talk right authorization message; during the group call, the media is sent from the system where the talk right holder is located to the line bridge center and then forwarded to the other participating systems.

10. The method according to claim 8, wherein The longitudinal dispatching process further includes an SMS interaction process: The network integration dispatching console sends the SMS to the network unified dispatching service platform, and the platform sends it to the TETRA system line-side dispatching server through the longitudinal dispatching interface server; When the TETRA system line-side dispatching server receives an SMS from a wireless terminal, it is forwarded to the network integration dispatching console through the longitudinal dispatching interface server and the network unified dispatching service platform in sequence.

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