Station emergency communication cross-network intercommunication conversion method and system, storage medium and equipment

Abstract

The invention belongs to the technical field of railway wireless communication, and provides a station emergency communication cross-network intercommunication conversion method and system, a storage medium and equipment, and the method comprises the steps: determining a target communication mode according to the network state and preset priority of each ground wireless network system; when the network states of all the ground wireless network systems are unavailable, determining a satellite communication mode as a target communication mode; in a satellite communication mode, receiving and analyzing the first to-be-sent communication content, and obtaining a first original receiving address and first original to-be-sent data; mapping the first original receiving address into a satellite mapping address corresponding to the satellite communication mode; and converting the first original to-be-sent data into satellite data, packaging the satellite data, the satellite mapping address and the local identification code to generate a satellite short message, and sending the satellite short message to a satellite communication system. During cross-network intercommunication conversion, fragmentation of a communication protocol is avoided, communication delay is reduced, and rapid information receiving and sending in an emergency scene are facilitated.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of railway wireless communication, and particularly relates to a method, a system, a storage medium and a device for cross-network interworking conversion of station emergency communication. Background Art

[0002] With the continuous expansion of the scale of urban rail transit networks and the continuous increase in passenger flow, how to respond to emergencies such as disasters and power equipment failures in subway, light rail and other line networks has become the focus of attention of transportation authorities and operators. Generally, multiple ground wireless network systems such as TETRA (Terrestrial Trunked Radio) trunking communication systems, LTE-M systems (Long-Term Evolution system for urban rail transit using LTE technology), and 5G public and private network systems are deployed for urban rail transit emergency communication. These ground wireless network systems operate independently and are not interconnected. If a certain communication system fails due to equipment failure or environmental disaster, it cannot automatically switch to other available communication systems. Therefore, when the currently used communication system fails and the primary wireless network is paralyzed, stations or trains often lose contact with the control center.

[0003] Currently, in the case of a complete interruption of the ground wireless network, Beidou satellite short message communication can provide emergency communication functions, but usually requires the use of an independent BDS (BeiDou Navigation Satellite System) terminal for message sending and receiving, and there is no integration mechanism with the ground wireless network; if you want to use Beidou satellite short message communication to ensure emergency communication, manual switching or the use of completely separate terminal devices is required, resulting in high system complexity and difficult to guarantee timeliness during the emergency communication process.

[0004] Furthermore, after changing from the ground wireless communication system to using Beidou satellite short message communication, if you want to interoperate the voice of the TETRA trunking communication system, the short messages of the LTE-M system, or the data of the 5G (fifth-generation mobile communication technology) public and private network system to the BDS terminal, multiple devices need to perform parsing and secondary forwarding respectively, which has disadvantages such as protocol fragmentation, high latency, and frequent manual operations.

[0005] Setting multiple ground wireless network systems and BDS terminals results in the multi-mode systems and terminals being independent of each other, and the fault detection, network status monitoring, encryption and authentication mechanisms are also separated from each other. Maintenance personnel need to monitor multiple systems at the same time. Once an emergency occurs, they cannot identify and switch to the optimal communication link in a single platform in a timely manner. Summary of the Invention

[0006] To solve the above problems, the present disclosure provides a method, system, storage medium, and device for cross-network interoperability conversion in station emergency communication. By setting preset priorities among multiple ground wireless network systems and combining the network status of the ground wireless network systems, a ground wireless network system is selected to communicate with the peer device. When a satellite short message is received, the satellite short message can be converted into a network data format and sent to the peer device through the ground wireless network system. When the wireless network system is unable to communicate with the peer device and there is no replaceable ground wireless network system, the satellite communication module is used to communicate with the peer device, and the received network data can be encapsulated into a satellite short message. It can determine a ground wireless network or a satellite communication system as the target communication mode according to the network conditions of multiple ground wireless network systems, and realize the format conversion between network data and short messages, reducing the manual operation cost and improving the information communication efficiency.

[0007] The present invention is realized through the following technical solutions: In a first aspect, an embodiment of the present disclosure provides a method for cross-network interoperability conversion in station emergency communication, the method including: Detect the network status of each ground wireless network system, and determine the target communication mode according to the network status of each ground wireless network system and the preset priority of each ground wireless network system; when the network status of all ground wireless network systems is unavailable, determine the satellite communication mode as the target communication mode; In the satellite communication mode: Receive the first communication content to be sent, parse the first communication content to be sent, and obtain the first original receiving address and the first original data to be sent; Map the first original receiving address to the satellite mapping address corresponding to the satellite communication mode; Convert the first original data to be sent into satellite data, encapsulate the satellite data, the satellite mapping address, and the local identification code to generate a satellite short message, and send the satellite short message to the satellite communication system.

[0008] Further, When there are multiple ground wireless network systems with available network status, determine the first ground wireless network system according to the preset priority of each ground wireless network system, and determine the first ground wireless network mode as the target communication mode; In the first ground wireless network mode: Receive the second communication content to be sent, parse the second communication content to be sent, and obtain the second original receiving address and the second original data to be sent; Map the second original receiving address to the first network mapping address corresponding to the first ground wireless network mode; Convert the second original data to be sent into first network data corresponding to the first terrestrial wireless network mode, generate first network communication information corresponding to the first terrestrial wireless network mode based on the first network data and the first network mapping address, and send the first network communication information to the first terrestrial wireless network system.

[0009] Furthermore, Real-time detect the network status of the first terrestrial wireless network system; If it is detected that the network status of the first terrestrial wireless network system becomes unavailable, determine the second terrestrial wireless network system according to the preset priorities of each terrestrial wireless network system, and determine the second terrestrial wireless network mode as the target communication mode; Feedback the fault information of the first terrestrial wireless network system to the control center through the satellite communication system.

[0010] Furthermore, In the second terrestrial wireless network mode: Receive the third communication content to be sent, parse the third communication content to be sent, and obtain the third original receiving address and the third original data to be sent; Map the third original receiving address to a second network mapping address corresponding to the second terrestrial wireless network mode; Convert the third original data to be sent into second network data corresponding to the second terrestrial wireless network mode, generate second network communication information corresponding to the second terrestrial wireless network mode based on the second network data and the second network mapping address, and send the second network communication information to the second terrestrial wireless network system.

[0011] Furthermore, Through the satellite communication system, feedback the fault information of all terrestrial wireless network systems with unavailable network status to the control center.

[0012] Furthermore, Detect the network quality of the terrestrial wireless network system, and determine whether the network quality of the terrestrial wireless network system meets the preset conditions. If the network quality of the terrestrial wireless network system does not meet the preset conditions, the network status is determined to be unavailable; Detect the network communication situation of the terrestrial wireless network system. If it is determined that the terrestrial wireless network system cannot communicate with the peer device, the network status is determined to be unavailable.

[0013] Furthermore, Detect the network status of each terrestrial wireless network system within a preset duration, and update the preset priorities among the terrestrial wireless network systems according to the network status of each terrestrial wireless network system within the preset duration.

[0014] Furthermore, Receive external network information or external short messages, decrypt the external network information or external short messages, and generate communication content to be sent. Encrypt satellite short messages or network communication information, and send the encrypted satellite short messages to the satellite communication system, and send the encrypted network communication information to the corresponding ground wireless network system.

[0015] Furthermore, Display the network status of the ground wireless network system, and periodically report the network status of the ground wireless network system to the control center.

[0016] In a second aspect, based on the same inventive concept, an embodiment of the present disclosure further provides a cross-network interworking conversion system for station emergency communication, and the system includes: A protocol and signaling parsing module, a data processing and routing module, and a protocol conversion and encapsulation module; The data processing and routing module detects the network status of each ground wireless network system, determines a target communication mode according to the network status of each ground wireless network system and the preset priority of each ground wireless network system; when the network status of all ground wireless network systems is unavailable, determine the satellite communication mode as the target communication mode; In the satellite communication mode: The protocol and signaling parsing module is used to receive the first communication content to be sent, parse the first communication content to be sent, and obtain the first original receiving address and the first original data to be sent; The data processing and routing module is used to map the first original receiving address to a satellite mapping address corresponding to the satellite communication mode; The protocol conversion and encapsulation module is used to convert the first original data to be sent into satellite data, encapsulate the satellite data, the satellite mapping address and the local identification code to generate a satellite short message, and send the satellite short message to the satellite communication system.

[0017] Furthermore, The data processing and routing module detects the network status of each ground wireless network system. When there are multiple ground wireless network systems with available network status, determine the first ground wireless network system according to the preset priority of each ground wireless network system, and determine the first ground wireless network mode as the target communication mode; In the first ground wireless network mode; The protocol and signaling parsing module is used to receive the second communication content to be sent, parse the second communication content to be sent, and obtain the second original receiving address and the second original data to be sent; The data processing and routing module is used to map the second original receiving address to a first network mapping address corresponding to the first ground wireless network mode; A protocol conversion and encapsulation module is used to convert the second original data to be sent into first network data corresponding to the first terrestrial wireless network mode, generate first network communication information corresponding to the first terrestrial wireless network mode based on the first network data and the first network mapping address, and send the first network communication information to the first terrestrial wireless network system.

[0018] Furthermore, The system further includes a security and encryption module and a device management and monitoring module; The security and encryption module is used to receive external network information or external short messages, decrypt the external network information or external short messages to generate communication content to be sent; encrypt satellite short messages or network communication information, and send the encrypted satellite short messages to the satellite communication system, and send the encrypted network communication information to the corresponding terrestrial wireless network system; The device management and monitoring module is used to display the network status of the terrestrial wireless network system, and at the same time periodically report the network status of the terrestrial wireless network system to the control center.

[0019] In a third aspect, based on the same inventive concept, an embodiment of the present disclosure further provides a computer-readable storage medium storing one or more programs, which when executed, can implement the aforementioned cross-network interoperability conversion method for station emergency communication.

[0020] In a fourth aspect, based on the same inventive concept, an embodiment of the present disclosure further provides a cross-network interoperability conversion device for station emergency communication. The device includes a multi-mode radio frequency interface module, a wired transmission interface module, a power supply and monitoring module, and a main control processor; the multi-mode radio frequency interface module and the wired transmission interface module are electrically connected to the main control processor, and the power supply and monitoring module is electrically connected to the main control processor; wherein, the main control processor is used to execute the program stored in the aforementioned computer-readable storage medium; The multi-mode radio frequency interface module includes a satellite interface and radio frequency interfaces corresponding to multiple terrestrial wireless network systems. The radio frequency interfaces are used for radio frequency communication with the terrestrial wireless network systems, and the satellite interface is used for communication with the satellite communication system; The wired transmission interface module includes an optical fiber interface and an Ethernet interface, which are used for communication with the terrestrial wireless network systems and detecting the network status of the terrestrial wireless network systems; The power supply and monitoring module is used to provide power to the cross-network interoperability conversion device for station emergency communication; wherein, the power supply and monitoring module is set to be dual-power supply.

[0021] Compared with the prior art, the present disclosure has the following advantages: 1. It can automatically convert network data in various formats into satellite short message formats. At the same time, it can also convert satellite short message formats into network data in various formats, avoiding communication protocol fragmentation, reducing communication latency, and helping to quickly send and receive information in emergency scenarios.

[0022] 2. Integrate multiple terrestrial wireless networks and satellite short message communications. When communication anomalies occur, multiple terrestrial wireless networks can be switched according to preset priorities. When all terrestrial wireless networks are unavailable, it can be automatically switched to satellite short message communication; when it is necessary to switch the communication mode, the communication mode can be automatically switched, improving the switching speed of the communication mode, and the switching process can be completed in one device, reducing system complexity.

[0023] 3. Centralize processes such as network switching, encryption, and parsing in one device for unified management, avoiding security vulnerabilities caused by combinations of multiple devices.

[0024] Other features and advantages of the present disclosure will be described in the subsequent specification, and, in part, will become apparent from the specification or will be understood by implementing the present disclosure. The objectives and other advantages of the present disclosure can be realized and obtained through the structures pointed out in the specification, claims, and drawings. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 It is a flowchart of a method for cross-network intercommunication conversion of station emergency communication provided by an embodiment of the present disclosure; Figure 2 It is another flowchart of a method for cross-network intercommunication conversion of station emergency communication provided by an embodiment of the present disclosure; Figure 3 It is a block diagram of a system for cross-network intercommunication conversion of station emergency communication provided by an embodiment of the present disclosure; Figure 4 It is a schematic structural diagram of a device for cross-network intercommunication conversion of station emergency communication provided by an embodiment of the present disclosure. Detailed Embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0028] In a first aspect, Figure 1 The following is a flowchart of a method for cross-network interoperability conversion of station emergency communication provided by an embodiment of the present disclosure. As Figure 1 shown, an embodiment of the present disclosure provides a method for cross-network interoperability conversion of station emergency communication. The method includes: S1: Detect the network status of each ground wireless network system, and determine the target communication mode according to the network status of each ground wireless network system and the preset priority of each ground wireless network system; when the network status of all ground wireless network systems is unavailable, determine the satellite communication mode as the target communication mode.

[0029] Specifically, a station is provided with multiple ground wireless network systems. The ground wireless network systems include TETRA trunking communication systems, urban rail transit long-term evolution systems using LTE technology (hereinafter simply referred to as LTE-M systems, and LTE technology is long-term evolution technology), 5G public-private network systems, etc. Preset priorities of multiple ground wireless networks are set in advance. Detect the network status of all ground wireless network systems, and in combination with the preset priorities, select the ground wireless network system with the highest preset priority from the ground wireless network systems with available network status, and determine it as the first ground wireless network system, and determine the first ground wireless network mode as the target communication mode. When the network status of all ground wireless network systems is unavailable, determine the satellite communication mode as the target communication mode. After determining the target communication mode, relevant modules can be instructed to execute operations corresponding to the target communication mode through mapping operation instructions, or the configurations and environments of relevant modules can be synchronized to make relevant modules switch to the configurations and environments corresponding to the target communication mode, so that relevant modules execute operations corresponding to the target communication mode.

[0030] In the satellite communication mode: S2: Receive the first communication content to be sent, parse the first communication content to be sent, and obtain the first original receiving address and the first original data to be sent.

[0031] Specifically, the first communication content to be sent is received. The first communication content to be sent can be network data sent through a terrestrial wireless network system or a short message sent through a satellite communication system. When the target communication mode is the satellite communication mode, the first communication content to be sent is usually network data sent through a terrestrial wireless network system. The specific sending source and data format of the first communication content to be sent can be determined by parsing the first communication content to be sent, or the specific sending source and data format can be determined by receiving an instruction while receiving the first communication content to be sent. Parse the received first communication content to be sent to obtain keyword fields such as the first original sending address, the first original receiving address, the train number, and the first original data to be sent. Among them, the first original data to be sent includes voice streams, short messages, data frames, etc.

[0032] Understandably, the data formats of the original data of different terrestrial wireless networks are different. In cross-network communication, it is necessary to identify and convert the data formats of the original data. For example, if the original data is a voice message, the voice message should also be converted into a text message.

[0033] S3: Map the first original receiving address to a satellite mapping address corresponding to the satellite communication mode.

[0034] Specifically, after determining the target communication mode, map the first original receiving address to a conversion mapping address corresponding to the target communication mode; when the target communication mode is the satellite communication mode, map the first original receiving address to a satellite mapping address corresponding to the satellite communication mode.

[0035] S4: Convert the first original data to be sent into satellite data, encapsulate the satellite data, the satellite mapping address, and the local identification code to generate a satellite short message, and send the satellite short message to the satellite communication system.

[0036] Specifically, convert the first original data to be sent into satellite data. This conversion process only converts the data format and does not change the data content. Since the data formats corresponding to different communication modes are different, format conversion is required; encapsulate the satellite data, the satellite mapping address corresponding to the satellite communication mode, and the local identification code to generate a satellite short message, and send the satellite short message to the satellite communication system. Before converting the format of the first original data to be sent, it can be determined to convert the first original data to be sent into satellite data through a mapping operation instruction; it can also be determined that the target communication mode is the satellite communication mode, and the relevant modules are switched to the configuration and environment corresponding to the satellite communication mode to convert the first original data to be sent into satellite data. In the satellite communication mode, when encapsulating the satellite data and the satellite mapping address, the local identification code needs to be encapsulated together.

[0037] In the embodiments of the present disclosure, in an emergency communication scenario, when the ground wireless network system fails and communication needs to be carried out via satellite, and the data format corresponding to the ground wireless network system cannot be directly sent via satellite, it is necessary to convert the information and data to be sent into the form of satellite short messages for sending by the satellite communication system.

[0038] In some examples, Figure 2 This is a flowchart of another method for cross-network interoperability conversion of station emergency communication provided by the embodiments of the present disclosure. As Figure 2 shown, the method for cross-network interoperability conversion of station emergency communication further includes: S1’: Detect the network status of each ground wireless network system, and determine the target communication mode according to the network status of each ground wireless network system and the preset priority of each ground wireless network system; when there are multiple ground wireless network systems with available network status, determine the first ground wireless network system according to the preset priority of each ground wireless network system, and determine the first ground wireless network mode as the target communication mode.

[0039] Specifically, the station is provided with multiple ground wireless network systems, and the ground wireless network systems include TETRA trunked communication systems, LTE-M systems, 5G public-private network systems, etc. Preset priorities of multiple ground wireless networks are set in advance. Detect the network status of all ground wireless network systems. When there are multiple ground wireless network systems with available network status, determine the first ground wireless network system according to the preset priority of each ground wireless network system, and determine the first ground wireless network mode as the target communication mode. After determining the target communication mode, relevant modules can be instructed to execute operations corresponding to the target communication mode through mapping operation instructions, or the configuration and environment of relevant modules can be synchronized to make relevant modules switch to the configuration and environment corresponding to the target communication mode, so that relevant modules execute operations corresponding to the target communication mode.

[0040] In the first ground wireless network mode: S2’: Receive the second communication content to be sent, parse the second communication content to be sent, and obtain the second original receiving address and the second original data to be sent.

[0041] Specifically, the second communication content to be sent is received. The second communication content to be sent can be network data sent through a terrestrial wireless network system or a short message sent through a satellite communication system. The specific sending source and data format of the second communication content to be sent can be determined by parsing the second communication content to be sent, or the specific sending source and data format can be determined by receiving an instruction while receiving the second communication content to be sent. The received second communication content to be sent is parsed to obtain keyword fields such as the second original sending address, the second original receiving address, the train number, and the second original data to be sent. Among them, the second original data to be sent includes voice streams, short messages, data frames, etc.

[0042] Understandably, if the second communication content to be sent is a short message sent through the satellite communication mode, the second communication content to be sent can be unpacked before parsing according to the actual situation of the second communication content to be sent to improve the parsing efficiency.

[0043] S3’: Map the second original receiving address to the first network mapping address corresponding to the first terrestrial wireless network mode.

[0044] Specifically, after determining the target communication mode, map the second original receiving address to the conversion mapping address corresponding to the target communication mode; when the target communication mode is the first terrestrial wireless network mode, map the second original receiving address to the first network mapping address corresponding to the first terrestrial wireless network mode.

[0045] S4’: Convert the second original data to be sent into the first network data corresponding to the first terrestrial wireless network mode, generate the first network communication information corresponding to the first terrestrial wireless network mode based on the first network data and the first network mapping address, and send the first network communication information to the first terrestrial wireless network system.

[0046] Specifically, convert the second original data to be sent into the first network data corresponding to the first terrestrial wireless network mode. This conversion process only converts the data format and does not change the data content. Since different communication modes correspond to different data formats, format conversion is required. Generate the first network communication information corresponding to the first terrestrial wireless network mode based on the first network data and the first network mapping address, and send the first network communication information to the first terrestrial wireless network system. Before converting the format of the second original data to be sent, the first network data corresponding to the first terrestrial wireless network mode to which the second original data to be sent is to be converted can be determined through a mapping operation instruction; or when the target communication mode is determined to be the first terrestrial wireless network mode, the relevant module can be switched to the configuration and environment corresponding to the first terrestrial wireless network mode to convert the second original data to be sent into the first network data corresponding to the first terrestrial wireless network mode.

[0047] In some examples, after determining the first terrestrial wireless network system according to the preset priorities of each terrestrial wireless network system and determining the first terrestrial wireless network mode as the target communication mode, the following steps are included: Real-time detect the network status of the first terrestrial wireless network system; if it is detected that the network status of the first terrestrial wireless network system becomes unavailable, determine the second terrestrial wireless network system according to the preset priorities of each terrestrial wireless network system, and determine the second terrestrial wireless network mode as the target communication mode.

[0048] Specifically, during the communication process, if the first terrestrial wireless network system fails or is unable to communicate with the peer device, it is necessary to switch to the second terrestrial wireless network system according to the preset priorities of the terrestrial wireless network systems. Before selecting the second terrestrial wireless network system according to the preset priorities, the network status of all terrestrial wireless network systems can be detected again. If the network status of all terrestrial wireless network systems is unavailable, the satellite communication mode can be directly determined as the target communication mode without trying other terrestrial wireless network systems again, eliminating the polling link and improving the communication efficiency.

[0049] Feedback the fault information of the first terrestrial wireless network system to the control center through the satellite communication system.

[0050] Specifically, when the network status of the terrestrial wireless network system is unavailable, the unavailable terrestrial wireless network system and the corresponding network status can be mapped into natural language, and the unavailable terrestrial wireless network system and the corresponding network status can be converted into natural language format. For example, the network status of the terrestrial wireless network system is detected to generate detection data represented by "0" and "1"; when the network status of the terrestrial wireless network system is available, the detection data is "1", and when the network status of the terrestrial wireless network system is unavailable, the detection data is "0"; taking the TETRA trunking communication system as an example, when it is determined that the TETRA trunking communication system is unavailable, the detection data corresponding to the TETRA trunking communication system is "0". At this time, it is necessary to send the available status of the TETRA trunking communication system to the control center in natural language, convert the TETRA trunking communication system and the corresponding network status into natural language format, and represent it as "The communication of the TETRA trunking communication system is lost, and the TETRA trunking communication system is in an unavailable state", and feedback the network status in natural language format to the control center through the satellite communication system. During this process, it is also necessary to perform mapping of operation instructions, including mapping operation instructions to control the satellite communication system to feedback the network status mapped into natural language format to the control center through the satellite communication system, and also including controlling the relevant module to switch the unavailable communication mode to the available communication mode.

[0051] It should be understood that the detection data can also be represented in other ways and can be adjusted according to the actual detection protocol or detection method used. This is only an example here and is not further specifically limited.

[0052] In some examples, after determining the second terrestrial wireless network mode as the target communication mode, it includes: In the second terrestrial wireless network mode: Receive the third communication content to be sent, parse the third communication content to be sent, and obtain the third original receiving address and the third original data to be sent; Map the third original receiving address to the second network mapping address corresponding to the second terrestrial wireless network mode; Convert the third original data to be sent into the second network data corresponding to the second terrestrial wireless network mode, generate the second network communication information corresponding to the second terrestrial wireless network mode based on the second network data and the second network mapping address, and send the second network communication information to the second terrestrial wireless network system.

[0053] Specifically, before performing format conversion on the third original data to be sent, it can be determined to convert the third original data to be sent into the second network data corresponding to the second terrestrial wireless network mode through a mapping operation instruction; it can also be that when determining the target communication mode as the second terrestrial wireless network mode, the relevant modules are switched to the configuration and environment corresponding to the second terrestrial wireless network mode to convert the third original data to be sent into the second network data corresponding to the second terrestrial wireless network mode.

[0054] In some examples, after determining the satellite communication mode as the target communication mode when the network status of all terrestrial wireless network systems is unavailable, it includes: Feed back the fault information of all terrestrial wireless network systems with unavailable network status to the control center through the satellite communication system.

[0055] In some examples, detecting the network status of each terrestrial wireless network system includes: Detect the network quality of the terrestrial wireless network system, and determine whether the network quality of the terrestrial wireless network system meets the preset conditions. If the network quality of the terrestrial wireless network system does not meet the preset conditions, the network status is determined to be unavailable.

[0056] Specifically, the preset conditions include that the interval for receiving heartbeat detection information is not higher than the preset threshold. For example: the interval for receiving two heartbeat detection information is not higher than 30 seconds; it can also include the packet loss rate threshold for receiving data. For example: the packet loss rate for receiving data is less than 5%. The detection of the network status of the terrestrial wireless network system can be carried out by establishing a wired communication with the terrestrial wireless network system and using the wired communication method to improve stability and accuracy.

[0057] Detect the network communication status of the ground wireless network system. If it is determined that the ground wireless network system cannot communicate with the peer device, the network status is determined to be unavailable.

[0058] Specifically, there are two possible situations where there is no ground wireless network system with an available network status. The first is that all ground wireless network systems within the station have failed and cannot be used. The second is that the peer device does not support the use of the ground wireless network system. Therefore, communication with the peer device cannot be carried out using the ground wireless network. For example, when communicating with the control center or a specific station, the control center or specific station can only use satellite communication. At this time, the ground wireless network system cannot communicate with the control center or specific station. Therefore, the network status of the ground wireless network system is unavailable.

[0059] In some examples, detecting the network status of each ground wireless network system includes: Detect the network status of each ground wireless network system within a preset time range, and update the preset priority between each ground wireless network system according to the network status of each ground wireless network system within the preset time range.

[0060] Specifically, according to the actual network situation, the preset priority between each ground wireless network system is updated in real time to improve the switching efficiency between the ground wireless network systems, thereby enhancing the overall communication efficiency. When detecting the network status of the ground wireless network system, it can be detected through an AI model or intelligent discrimination based on big data. The preset time range can be set according to the actual situation. For example, the preset time range can be 8 hours or 1 day. The specific setting method is not further limited here.

[0061] In some examples, the method for cross-network interworking conversion of station emergency communication further includes: Receive external network information or external short messages, decrypt the external network information or external short messages, and generate the communication content to be sent.

[0062] Specifically, according to the external network signal received through the radio frequency interface, determine the external network information. The external network information is usually encrypted. Decrypt the external network information to generate the communication content to be sent; according to the external short message signal received through the satellite interface, determine the external short message. The external short message is usually encrypted. Decrypt the external short message to generate the communication content to be sent.

[0063] Encrypt the satellite short message or network communication information, send the encrypted satellite short message to the satellite communication system, and send the encrypted network communication information to the corresponding ground wireless network system.

[0064] Specifically, encryption is performed before sending satellite short message or network communication information to improve the security of communication information during the cross-network interoperability conversion of emergency communication; the encrypted network communication information is sent to the peer device in the form of a signal by the radio frequency module, and the encrypted satellite short message is sent to the satellite in the form of a signal by the satellite interface and then forwarded to the peer device by the satellite.

[0065] It should be noted that the encryption and decryption methods in this disclosure can be homomorphic encryption, hash algorithm encryption, etc. The specific encryption and decryption methods used can be set according to the actual situation and will not be further limited here.

[0066] In some examples, the cross-network interoperability conversion method for station emergency communication further includes: Display the network status of the ground wireless network system and report the network status of the ground wireless network system to the control center periodically.

[0067] Specifically, the network status of the ground wireless network system is reported to the control center periodically so that the control center can obtain the available status of the ground wireless network system of the target station. The specific reporting period can be set according to the actual situation, such as set to 8 hours or 1 day, and will not be further limited here.

[0068] Embodiment 1: When emergencies such as disasters or power equipment failures occur at the station, it is necessary for the target station to conduct emergency communication with the control center and specific stations. Among them, the specific stations can be adjacent stations or stations that may be affected and need cooperation.

[0069] During the communication process between the target station and the specific station, ground wireless network communication or satellite communication system can be used. The satellite communication system includes the Beidou satellite system.

[0070] The target station is provided with multiple types of ground wireless network systems, including TETRA trunking communication system, LTE-M system, 5G public-private network system, etc.

[0071] The preset priorities among all ground wireless network systems are set in advance. For example, the preset priorities among ground wireless network systems are TETRA trunking communication system, LTE-M system, and 5G public-private network system in sequence.

[0072] The network status of the ground wireless network system can be detected by receiving the network management information and heartbeat detection information sent by the wireless network system; it can also be judged by the signal quality of the received ground wireless network system or the feedback instruction. For example, if the quality of the communication data received by the ground wireless network is low and packet loss occurs, it is judged that the signal quality of the ground wireless network system is poor and the network status is unavailable.

[0073] After detecting the network status of each ground wireless network system, if there is no ground wireless network system with an available network status, the satellite communication mode is determined as the target communication mode. The situation where there is no ground wireless network system with an available network status includes two possible cases. The first is that all ground wireless network systems in the station have failed and cannot be used. The second is that the peer device does not support communicating using the ground wireless network system. For example, when communicating with the control center or a specific station, if the control center or the specific station can only use satellite communication at this time, the network status of the ground wireless network system is unavailable. Regardless of which of the above situations, when the network status of each ground wireless network system is unavailable, the satellite communication mode needs to be determined as the target communication mode for communicating with the control center or a specific station. The communication process of sending emergency information in an emergency from the target station to the control center or a specific station through the satellite communication system is as follows: S101: The ground wireless network system in the target station initiates a communication task and sends the first signal to be sent, which needs to be sent to the control center or a specific station, to the station emergency communication cross-network interworking conversion device. Among them, the first signal to be sent carries emergency information.

[0074] S102: After receiving the first signal to be sent, the station emergency communication cross-network interworking conversion device obtains the first network information, decrypts the first network information, and determines the first communication content to be sent, which includes emergency information. Among them, the first signal to be sent is an external network signal sent through the ground wireless network system, and the first network information is external network information.

[0075] S103: Obtain the first communication content to be sent, analyze the first communication content to be sent, and obtain key fields such as the first original sending address, the first original receiving address, the train number, and the first original data to be sent. Among them, the first original data to be sent includes emergency information and is represented in the form of a voice stream, a short message, a data frame, etc.

[0076] S104: Map the first original receiving address to the satellite mapping address corresponding to the satellite communication mode.

[0077] S105: Convert the first original data to be sent into satellite data, encapsulate the satellite data, the satellite mapping address, and the local identification code to generate a satellite short message.

[0078] S106: After encrypting the satellite short message, it is sent to the satellite communication system in the form of a signal. The satellite communication system forwards the satellite short message to the control center or a specific station through the Beidou satellite. The emergency information only changes the format but not the content throughout the process and is finally sent to the control center or a specific station through the satellite communication system.

[0079] In this embodiment, when it is detected that the network status of the ground wireless network system is unavailable, the satellite communication system feeds back the fault information of all ground wireless network systems with the network status being unavailable to the control center. When the network status of the ground wireless network system is unavailable, the unavailable ground wireless network system and the corresponding network status can be mapped into natural language, and the unavailable ground wireless network system and the corresponding network status are converted into the natural language format. For example, the network status of the ground wireless network system is detected to generate detection data represented by "0" and "1"; when the network status of the ground wireless network system is available, the detection data is "1", and when the network status of the ground wireless network system is unavailable, the detection data is "0"; taking the TETRA trunking communication system as an example, when it is determined that the TETRA trunking communication system is unavailable, the detection data corresponding to the TETRA trunking communication system is "0". At this time, it is necessary to use natural language to send the available status of the TETRA trunking communication system to the control center, and convert the TETRA trunking communication system and the corresponding network status into the natural language format, expressed as "The communication of the TETRA trunking communication system is lost, and the TETRA trunking communication system is in an unavailable state", and the network status in the natural language format is fed back to the control center through the satellite communication system. In this process, it is also necessary to perform mapping of operation instructions, including mapping operation instructions to control the satellite communication system to feed back the network status mapped into the natural language format to the control center through the satellite communication system, and also including controlling the relevant module to switch the unavailable communication mode to the available communication mode.

[0080] Embodiment 2: After detecting the network status of each ground wireless network system, there are ground wireless network systems with the network status being available. According to the preset priorities of the ground wireless network systems with the network status being available, the first ground wireless network system is determined, and the first ground wireless network mode is determined as the target communication mode; it is understandable that among the ground wireless network systems with the network status being available, the first ground wireless network system is the ground wireless network system with the highest priority ranking. For example, the preset priorities are the TETRA trunking communication system, the LTE-M system, and the 5G public private network system in sequence, and the network status of all three systems can be used, then the TETRA trunking communication mode is selected and determined as the target communication mode, and the TETRA trunking communication system is used for communication subsequently.

[0081] Detect the network status of the first terrestrial wireless network system in real time; if it is detected that the network status of the first terrestrial wireless network system becomes unavailable, detect the network status of each terrestrial wireless network system again, determine the second terrestrial wireless network system in combination with the preset priorities of each terrestrial wireless network system, and determine the second terrestrial wireless network mode as the target communication mode; at the same time, feedback the fault information of the first terrestrial wireless network system to the control center through the satellite communication system. For example: when the network status of the TETRA trunking communication system is unavailable and the network status of other terrestrial wireless network systems is detected to be available, according to the preset priority, switch from the TETRA trunking communication system to the LTE-M system, feedback the fault information of the TETRA trunking communication system to the control center, and the LTE-M system is determined as the new target communication mode.

[0082] When the target communication mode is the first terrestrial wireless network system, after receiving the satellite short message sent by the control center or a specific station, the information content in the satellite short message needs to be sent to other specific stations. The communication process is as follows: S201: The station emergency communication cross-network interworking conversion device receives the external short message signal, obtains the external short message, and decrypts the external short message to generate the second communication content to be sent. Among them, the second communication content to be sent is in the form of a short message.

[0083] S202: Obtain the second communication content to be sent, decompose and parse the second communication content to be sent, and obtain key fields such as the second original sending address, the second original receiving address, the train number, and the second original data to be sent. The second original data to be sent includes voice streams, short messages, data frames, etc. Among them, the second original data to be sent may include emergency information according to the actual situation.

[0084] S203: Map the second original receiving address to the first network mapping address corresponding to the first terrestrial wireless network mode.

[0085] S204: Convert the second original data to be sent into the first network data corresponding to the first terrestrial wireless network mode, and generate the first network communication information corresponding to the first terrestrial wireless network mode based on the first network data and the first network mapping address.

[0086] S205: After encrypting the first network communication information, send it to the first terrestrial wireless network system in the form of a signal, and the external first terrestrial wireless network system sends the first network communication information to the control center or a specific station.

[0087] In this embodiment, the preset priorities among the terrestrial wireless networks are quickly determined through the multi-mode network status table, and the information in the multi-mode network status table can be maintained and updated according to the actual situation.

[0088] It should be understood that in the present disclosure, when sending and receiving messages or short messages between the ground wireless network system and the satellite system, it is all in the form of signals, and the signals carry the messages or short messages; when the ground wireless network system and the satellite system send and receive messages or short messages between the control center or a specific station, it is also in the form of signals, and the signals carry the messages or short messages.

[0089] In a second aspect, Figure 3 The present disclosure provides a block diagram of a cross-network interworking conversion system for station emergency communication. As Figure 3 shown, based on the same inventive concept, the present disclosure also provides a cross-network interworking conversion system for station emergency communication. The system includes: a protocol and signaling parsing module, a data processing and routing module, and a protocol conversion and encapsulation module; The data processing and routing module detects the network status of each ground wireless network system, and determines the target communication mode according to the network status of each ground wireless network system and the preset priority of each ground wireless network system; when the network status of all ground wireless network systems is unavailable, the satellite communication mode is determined as the target communication mode; In the satellite communication mode: The protocol and signaling parsing module receives the first communication content to be sent, parses the first communication content to be sent, and obtains the first original receiving address and the first original data to be sent; The data processing and routing module maps the first original receiving address to the satellite mapping address corresponding to the satellite communication mode; The protocol conversion and encapsulation module converts the first original data to be sent into satellite data, encapsulates the satellite data, the satellite mapping address, and the local identification code to generate a satellite short message, and sends the satellite short message to the satellite communication system.

[0090] In some examples, the data processing and routing module detects the network status of each ground wireless network system. When there are multiple ground wireless network systems with available network status, according to the preset priority of each ground wireless network system, the first ground wireless network system is determined, and the first ground wireless network mode is determined as the target communication mode: In the first ground wireless network mode; The protocol and signaling parsing module receives the second communication content to be sent, parses the second communication content to be sent, and obtains the second original receiving address and the second original data to be sent; The data processing and routing module maps the second original receiving address to the first network mapping address corresponding to the first ground wireless network mode; The protocol conversion and encapsulation module converts the second original data to be sent into first network data corresponding to the first terrestrial wireless network mode, generates first network communication information corresponding to the first terrestrial wireless network mode based on the first network data and the first network mapping address, and sends the first network communication information to the first terrestrial wireless network system.

[0091] In some examples, the station emergency communication cross-network interworking conversion system further includes a drive module, a security and encryption module, and a device management and monitoring module; The drive module is used to provide drives for the radio frequency interface and the wired interface, and also provide drives for hardware such as the security and encryption chip, and provide an operating system for the main control processing unit.

[0092] The security and encryption module is used to receive external network information or external short messages, decrypt the external network information or external short messages to generate communication content to be sent; encrypt satellite short messages or network communication information, send the encrypted satellite short messages to the satellite communication system, and send the encrypted network communication information to the corresponding terrestrial wireless network system; the protocol conversion and encapsulation module transmits the satellite short messages and network communication information to the security and encryption module, and the security and encryption module encrypts the satellite short messages and network communication information and then sends them to the corresponding systems.

[0093] The device management and monitoring module is used to display the network status of the terrestrial wireless network system and periodically report the network status of the terrestrial wireless network system to the control center.

[0094] In some examples, the data processing and routing module maintains a multi-mode network status table, quickly determines the preset priorities between each terrestrial wireless network through the multi-mode network status table, and can also maintain and update the information in the multi-mode network status table according to the actual situation. The data processing and routing module can also send the network status of the terrestrial wireless network system to the control center through natural language mapping, and inform the other modules of the current target communication mode through process mapping. For example: before the protocol conversion and encapsulation module performs format conversion on the first original data to be sent, the data processing and routing module, through a mapping operation instruction, informs the protocol conversion and encapsulation module to convert the first original data to be sent into satellite data; before the protocol conversion and encapsulation module performs format conversion on the second original data to be sent, the data processing and routing module, through a mapping operation instruction, informs the protocol conversion and encapsulation module to convert the second original data to be sent into first network data corresponding to the first terrestrial wireless network mode.

[0095] Furthermore, the data processing and routing module can automatically switch the target communication mode. Therefore, after the data processing and routing module determines the target communication mode, the protocol conversion and encapsulation module and the configurations and environments of the other modules are switched to correspond to the target communication mode. For example, after the data processing and routing module determines that the target communication mode is the satellite communication mode, the protocol conversion and encapsulation module switches to the configuration and environment corresponding to the satellite communication mode to convert the first original data to be sent into satellite data. After the data processing and routing module determines that the target communication mode is the first terrestrial wireless network mode, the protocol conversion and encapsulation module switches to the configuration and environment corresponding to the first terrestrial wireless network mode to convert the second original data to be sent into the first network data corresponding to the first terrestrial wireless network mode.

[0096] In some examples, the protocol conversion and encapsulation module can encapsulate various data formats such as voice messages and short messages into short message formats, and can also convert satellite short message format data into data formats readable by terrestrial wireless networks or the local device.

[0097] In some examples, the security and encryption module can also implement user / device authentication and access control, perform access control and permission management, and configure security policies. The device management and monitoring module can also be used to provide functions such as a unified network management interface, log auditing, remote upgrade, and maintenance.

[0098] In some examples, the protocol and signaling parsing module can be containerized and deployed using embedded Linux (an open-source, multi-user, multi-tasking operating system) combined with Docker (an open-source containerization platform), or can also use the RTOS (real-time operating system) combined with the middleware mode.

[0099] In a third aspect, based on the same inventive concept, the embodiments of the present disclosure further provide a computer-readable storage medium storing one or more programs, which when executed, can implement the aforementioned cross-network intercommunication conversion method for station emergency communication. The computer-readable storage medium can be an internal storage unit of the main control processor for program storage and data caching, and the storage unit can be RAM (Random Access Memory), Flash (flash memory).

[0100] Fourth aspect, Figure 4 is a schematic structural diagram of a cross-network intercommunication conversion device for station emergency communication provided by the embodiments of the present disclosure, as Figure 4As shown in the figure, based on the same inventive concept, an embodiment of the present disclosure further provides a station emergency communication cross-network interworking conversion device, which includes a multi-mode radio frequency interface module, a wired transmission interface module, a power supply and monitoring module, and a main control processor. The multi-mode radio frequency interface module and the wired transmission interface module are electrically connected to the main control processor, and the power supply and monitoring module and the main control processor are electrically connected. Among them, the main control processor is used to execute the program stored in the aforementioned computer-readable storage medium; The multi-mode radio frequency interface module includes a satellite interface and radio frequency interfaces corresponding to multiple terrestrial wireless network systems. The radio frequency interfaces are used for radio frequency communication with terrestrial wireless network systems, and the satellite interface is used for communication with satellite communication systems; specifically, it includes: TETRA radio frequency interface, LTE-M radio frequency interface, 5G public-private network radio frequency interface, and BDS satellite interface. Among them, each radio frequency interface can be set independently, or can be implemented by a shared antenna matrix, that is, through a switching and distribution mechanism, a group of antennas are shared by multiple radio frequency interfaces to realize the transceiver of different system signals; it can also use an all-in-one SDR (Software Defined Radio) hardware to replace multiple independent radio frequency modules. Among them, the 5G public-private network refers to a network that is based on the operator's 5G public network, uses network slicing technology to provide exclusive network capabilities, carries various services such as voice and data of urban rail transit, covers the entire scenario of urban rail transit, and realizes a dedicated network for the 5G public network. A single operator 5G public network or an industry 5G private network can be used in the present disclosure.

[0101] Furthermore, the multi-mode radio frequency interface module can also add adaptation interfaces such as Wi-Fi6 (Sixth Generation Wireless Network Technology), NB-IoT (Narrowband Internet of Things), or 5G R17 NTN (5G Release 17 Non-Terrestrial Network) satellite system, etc., to further enhance compatibility.

[0102] The wired transmission interface module includes a fiber optic interface, an Ethernet interface (such as SFP / RJ45), and is used for TCP / IP (Transmission Control Protocol / Internet Protocol) communication with terrestrial wireless network systems to realize the detection of the network status of terrestrial wireless network systems and data communication; it can also be used for wired communication with other systems or devices. The Ethernet interface includes SFP (Small Form-factor Pluggable interface), RJ45 (an information socket connector), etc. The wired transmission interface module also includes E1 / T1 (a digital communication standard) interface, RS-232 (serial communication interface standard) interface, RS-485 (serial communication interface standard) interface, etc., to be compatible with traditional wired communication requirements. Among them, E1 / T1, RS-232, and RS-485 all represent communication standards or interface standards.

[0103] The main control processor is used to run the aforementioned cross-network intercommunication conversion system for station emergency communication and execute the aforementioned cross-network intercommunication conversion method for station emergency communication. The built-in storage unit of the main control processor is used for program storage and data caching, and the storage unit can be RAM (Random Access Memory) or Flash (Flash Memory).

[0104] The power supply and monitoring module is set for dual power supply or redundant power supply, and two power interfaces are set to provide stable power for the cross-network intercommunication conversion device for station emergency communication; the power supply and monitoring module monitors the status of power supply, current, temperature, etc. in real time to ensure the highly reliable operation of the device.

[0105] The cross-network intercommunication conversion device for station emergency communication in the embodiments of the present disclosure further includes a security and encryption chip, which is mainly responsible for hardware encryption, decryption, identity authentication, etc. of key service data; the security and encryption chip can choose to use HSM (Hardware Security Module).

[0106] The cross-network intercommunication conversion device for station emergency communication in the embodiments of the present disclosure is mainly used for emergency communication when an emergency occurs at the target station. When an emergency occurs at the target station, the target station needs to conduct emergency communication with the control center or a specific station. Among them, the specific station can be an adjacent station or a station that may be affected and requires cooperation. During the communication process between the target station and the specific station, ground wireless network communication or Beidou satellite short message communication can be used. The control center is usually equipped with a satellite antenna and a satellite receiving terminal, and uses Beidou satellite short message communication when the ground wireless network system is unavailable. The cross-network intercommunication conversion device for station emergency communication is fully deployed at the target station and the specific station, and partially deployed at the control center. For example: the multi-mode radio frequency interface module only requires a satellite interface. Correspondingly, for the cross-network intercommunication conversion system deployed at the control center, there is no need to arrange a data processing and routing module.

[0107] In some examples, the cross-network intercommunication conversion device for station emergency communication may further include a fan, an operation indicator light, and a management and operation and maintenance interface. The fan realizes the heat dissipation of the device, the operation indicator light displays the operation status, and the management and operation and maintenance interface facilitates the management and operation and maintenance of the cross-network intercommunication conversion device for station emergency communication by external devices.

[0108] The cross-network intercommunication conversion device for station emergency communication in the embodiments of the present disclosure can achieve space-air-ground integration, that is, satellite communication, ground wireless network communication, and wired network communication can be implemented.

[0109] The station emergency communication cross-network interworking conversion method, system, storage medium and device in the present disclosure are mainly oriented to the emergency communication between urban rail transit (such as subways and light rails) stations and between stations and control centers; they can also be extended to scenarios with similar multi-system integration requirements such as long-distance railways, highway tunnels, and mines. It can improve the emergency management level of urban rail transit, ensure the personal safety of passengers, and has good scalability, facilitating the subsequent integration of more systems.

[0110] Although the present disclosure 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 described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A cross-network interoperability conversion method for station emergency communication, characterized in that The method includes: Detect the network status of each terrestrial wireless network system, and determine the target communication mode according to the network status of each terrestrial wireless network system and the preset priority of each terrestrial wireless network system; when the network status of all terrestrial wireless network systems is unavailable, determine the satellite communication mode as the target communication mode; In the satellite communication mode: Receive the first communication content to be sent, parse the first communication content to be sent, and obtain the first original receiving address and the first original data to be sent; Map the first original receiving address to the satellite mapping address corresponding to the satellite communication mode; Convert the first original data to be sent into satellite data, encapsulate the satellite data, the satellite mapping address, and the local identification code to generate a satellite short message, and send the satellite short message to the satellite communication system.

2. The method according to claim 1, characterized in that, The cross-network intercommunication conversion method for station emergency communication further includes: When there are multiple terrestrial wireless network systems with available network status, determine the first terrestrial wireless network system according to the preset priority of each terrestrial wireless network system, and determine the first terrestrial wireless network mode as the target communication mode; In the first terrestrial wireless network mode: Receive the second communication content to be sent, parse the second communication content to be sent, and obtain the second original receiving address and the second original data to be sent; Map the second original receiving address to the first network mapping address corresponding to the first terrestrial wireless network mode; Convert the second original data to be sent into the first network data corresponding to the first terrestrial wireless network mode, generate the first network communication information corresponding to the first terrestrial wireless network mode based on the first network data and the first network mapping address, and send the first network communication information to the first terrestrial wireless network system.

3. The method according to claim 2, wherein After determining the first terrestrial wireless network system according to the preset priority of each terrestrial wireless network system and determining the first terrestrial wireless network mode as the target communication mode, it includes: Real-time detect the network status of the first terrestrial wireless network system; If it is detected that the network status of the first terrestrial wireless network system becomes unavailable, determine the second terrestrial wireless network system according to the preset priority of each terrestrial wireless network system, and determine the second terrestrial wireless network mode as the target communication mode; Feed back the fault information of the first terrestrial wireless network system to the control center through the satellite communication system.

4. The method according to claim 3, characterized in that, After determining the second terrestrial wireless network mode as the target communication mode, it includes: In the second terrestrial wireless network mode: Receive the third communication content to be sent, parse the third communication content to be sent, and obtain the third original receiving address and the third original data to be sent; Map the third original receiving address to the second network mapping address corresponding to the second terrestrial wireless network mode; Convert the third original data to be sent into the second network data corresponding to the second terrestrial wireless network mode, generate the second network communication information corresponding to the second terrestrial wireless network mode based on the second network data and the second network mapping address, and send the second network communication information to the second terrestrial wireless network system.

5. The method according to claim 1, characterized in that After determining the satellite communication mode as the target communication mode when the network status of all terrestrial wireless network systems is unavailable, it includes: Feedback the fault information of all ground wireless network systems with unavailable network status to the control center through the satellite communication system.

6. The method according to claim 1, wherein The detection of the network status of each ground wireless network system includes: Detect the network quality of the ground wireless network system, and determine whether the network quality of the ground wireless network system meets the preset conditions. If the network quality of the ground wireless network system does not meet the preset conditions, the network status is determined to be unavailable; Detect the network communication situation of the ground wireless network system. If it is determined that the ground wireless network system cannot communicate with the peer device, the network status is determined to be unavailable.

7. The method according to claim 1, wherein The detection of the network status of each ground wireless network system includes: Detect the network status of each ground wireless network system within a preset time range, and update the preset priority between each ground wireless network system according to the network status of each ground wireless network system within the preset time range.

8. The method according to claim 1, characterized in that The station emergency communication cross-network interworking conversion method further includes: Receive external network information or external short messages, decrypt the external network information or external short messages, and generate the communication content to be sent; Encrypt the satellite short message or network communication information, send the encrypted satellite short message to the satellite communication system, and send the encrypted network communication information to the corresponding ground wireless network system.

9. The method according to claim 1, wherein The station emergency communication cross-network interworking conversion method further includes: Display the network status of the ground wireless network system, and periodically report the network status of the ground wireless network system to the control center.

10. A cross-network interoperability conversion system for station emergency communication, characterized in that, The system includes: a protocol and signaling parsing module, a data processing and routing module, and a protocol conversion and encapsulation module; The data processing and routing module detects the network status of each ground wireless network system, determines the target communication mode according to the network status of each ground wireless network system and the preset priority of each ground wireless network system; when the network status of all ground wireless network systems is unavailable, determine the satellite communication mode as the target communication mode; In the satellite communication mode: The protocol and signaling parsing module is used to receive the first communication content to be sent, parse the first communication content to be sent, and obtain the first original receiving address and the first original data to be sent; The data processing and routing module is used to map the first original receiving address to the satellite mapping address corresponding to the satellite communication mode; The protocol conversion and encapsulation module is used to convert the first original data to be sent into satellite data, encapsulate the satellite data, the satellite mapping address and the local identification code to generate a satellite short message, and send the satellite short message to the satellite communication system.

11. The system according to claim 10, wherein The data processing and routing module detects the network status of each ground wireless network system. When there are multiple ground wireless network systems with available network status, determine the first ground wireless network system according to the preset priority of each ground wireless network system, and determine the first ground wireless network mode as the target communication mode; In the first ground wireless network mode; The protocol and signaling parsing module is used to receive the second communication content to be sent, parse the second communication content to be sent, and obtain the second original receiving address and the second original data to be sent; A data processing and routing module for mapping a second original receiving address to a first network mapping address corresponding to a first terrestrial wireless network mode; A protocol conversion and encapsulation module for converting second original data to be sent into first network data corresponding to a first terrestrial wireless network mode, generating first network communication information corresponding to the first terrestrial wireless network mode based on the first network data and the first network mapping address, and sending the first network communication information to a first terrestrial wireless network system.

12. The system according to claim 11, wherein The system further includes a security and encryption module and a device management and monitoring module; The security and encryption module is configured to receive external network information or external short messages, decrypt the external network information or external short messages, and generate communication content to be sent; encrypt satellite short messages or network communication information, send the encrypted satellite short messages to a satellite communication system, and send the encrypted network communication information to a corresponding terrestrial wireless network system; The device management and monitoring module is configured to display the network status of the terrestrial wireless network system and periodically report the network status of the terrestrial wireless network system to a control center.

13. A computer-readable storage medium storing one or more programs, characterized in that when the one or more programs are executed, the cross-network intercommunication conversion method for station emergency communication according to any one of claims 1-9 can be implemented.

14. An emergency communication cross-network interconnection conversion device for a station, characterized in that, The device includes a multi-mode radio frequency interface module, a wired transmission interface module, a power supply and monitoring module, and a main control processor; the multi-mode radio frequency interface module and the wired transmission interface module are electrically connected to the main control processor, and the power supply and monitoring module is electrically connected to the main control processor; wherein, the main control processor is configured to execute the program stored in the computer-readable storage medium in claim 13; The multi-mode radio frequency interface module includes a satellite interface and radio frequency interfaces corresponding to multiple terrestrial wireless network systems. The radio frequency interfaces are used for radio frequency communication with the terrestrial wireless network systems, and the satellite interface is used for communication with the satellite communication system; The wired transmission interface module includes an optical fiber interface and an Ethernet interface, which are used for communicating with the terrestrial wireless network systems and detecting the network status of the terrestrial wireless network systems; The power supply and monitoring module is configured to provide power to the station emergency communication cross-network intercommunication conversion device; wherein, the power supply and monitoring module is set to be dual-power supply.

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