Communication auxiliary system and method

Abstract

The embodiment of the invention discloses a communication auxiliary system and method. The system comprises a satellite communication system and a cross-network intercommunication conversion device, the cross-network intercommunication conversion device is in communication connection with the satellite communication system and is used for determining the information interaction state between a current auxiliary station and a candidate communication mechanism, and if the information interaction state is an interaction abnormal state, the candidate communication mechanism is started. If yes, obtaining current wireless communication data in the current auxiliary station; the cross-network intercommunication conversion equipment is also used for determining a satellite transmission message according to the current wireless communication data and sending the satellite transmission message to the satellite communication system; and the satellite communication system is used for forwarding the satellite transmission message to the target communication mechanism. The wireless communication data can be transmitted under the condition that the wireless communication system is in an information island.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a communication assistance system and method. Background Art

[0002] Currently, the wireless communication systems in urban rail transit intervals operate independently and cannot achieve cross-system communication interconnection and automatic switching. Once large-scale failures occur in ground communication (such as base station damage, line interruption, etc.), the wireless communication system is prone to fall into an "information island" and it is difficult to complete the real-time transmission of emergency information. Therefore, it is crucial to realize the transmission of wireless communication data when the wireless communication system is in an information island. Summary of the Invention

[0003] The present invention provides a communication assistance system and method to realize the transmission of wireless communication data when the wireless communication system is in an information island.

[0004] According to one aspect of the present invention, a communication assistance system is provided, including: a satellite communication system and a cross-network interworking conversion device, wherein,

[0005] The cross-network interworking conversion device is communicatively connected to the satellite communication system and is used to determine the information interaction status between the current auxiliary station and the candidate communication agency. If the information interaction status is an abnormal interaction status, the current wireless communication data in the current auxiliary station is acquired;

[0006] The cross-network interworking conversion device is further used to determine a satellite transmission message according to the current wireless communication data and send the satellite transmission message to the satellite communication system;

[0007] The satellite communication system is used to forward the satellite transmission message to the target communication agency.

[0008] According to another aspect of the present invention, a communication assistance method is provided, which is applied to a communication assistance system. The communication assistance system includes a satellite communication system and a cross-network interworking conversion device. The method includes:

[0009] Determine the information interaction status between the current auxiliary station and the candidate communication agency through the cross-network interworking conversion device. If the information interaction status is an abnormal interaction status, acquire the current wireless communication data in the current auxiliary station;

[0010] Determine a satellite transmission message according to the current wireless communication data through the cross-network interworking conversion device and send the satellite transmission message to the satellite communication system;

[0011] Forward the satellite transmission message to the target communication agency through the satellite communication system.

[0012] A communication assistance system provided by an embodiment of the present invention constructs a communication assistance system by introducing a satellite communication system and a cross-network interworking conversion device. When the wireless communication system of the current auxiliary station is in an information island, the satellite communication system is used to send the current wireless communication data to the target communication institution, avoiding communication interruption and preventing accidents. This improves the reliability and stability of communication between the current auxiliary station and the candidate communication institution, and further enhances the safety of the current auxiliary station.

[0013] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Brief Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1A is a schematic structural diagram of a communication assistance system provided by Embodiment 1 of the present invention;

[0016] Figure 1B is a flowchart of the mutual conversion between the current wireless communication data and the satellite transmission message provided by Embodiment 1 of the present invention;

[0017] Figure 1C is a schematic structural diagram of another communication assistance system provided by Embodiment 1 of the present invention;

[0018] Figure 1D is a schematic structural diagram of a part of the communication assistance system deployed in a station provided by Embodiment 1 of the present invention;

[0019] Figure 1E is a part of the communication assistance system deployed in a control center provided by Embodiment 1 of the present invention;

[0020] Figure 2 is a flowchart of a communication assistance method provided by Embodiment 2 of the present invention. Detailed Embodiments

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention. In addition, it should be noted that for the sake of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0022] Embodiment 1

[0023] Figure 1A FIG. 1 is a schematic structural diagram of a communication assistance system provided in Embodiment 1 of the present invention. Among them, the communication assistance system includes a satellite communication system and an inter-network interoperability conversion device. The inter-network interoperability conversion device is communicatively connected to the satellite communication system and is used to determine the information interaction status between the current auxiliary station and the candidate communication agency. If the information interaction status is an abnormal interaction status, the current wireless communication data in the current auxiliary station is acquired; the inter-network interoperability conversion device is further used to determine a satellite transmission message according to the current wireless communication data and send the satellite transmission message to the satellite communication system; the satellite communication system is used to forward the satellite transmission message to the target communication agency.

[0024] Among them, the communication assistance system can be used to perform emergency transmission of communication data in the case of a communication interruption between the current auxiliary station and other candidate communication agencies. The satellite communication system can be used to forward the communication data to the target communication agency. The inter-network interoperability conversion device can be used to convert the communication data into a short message that can be received by the satellite communication system.

[0025] Among them, the current auxiliary station refers to the station that uses the communication assistance system. The candidate communication agency refers to the agency that has a communication connection with the current auxiliary station. Exemplarily, the candidate communication agency can include a candidate communication station and a candidate communication control center. The candidate communication station refers to the station that has a communication connection with the current auxiliary station. The candidate communication control center refers to the control center that has a communication connection with the current auxiliary station.

[0026] Among them, the information interaction status refers to the network connection status between the current auxiliary station and the candidate communication agency. Exemplarily, the information interaction status can be a normal interaction status or an abnormal interaction status. The normal interaction status means that the network connection between the current auxiliary station and the candidate communication agency is normal, that is, the current auxiliary station can send wireless communication data to the candidate communication agency. The abnormal interaction status means that the network connection between the current auxiliary station and the candidate communication agency is abnormal, that is, the current auxiliary station cannot send wireless communication data to the candidate communication agency.

[0027] Exemplarily, if there are at least two wireless communication subsystems in the wireless communication system and the information interaction sub-states of each wireless communication subsystem are all interaction abnormal sub-states, then it is determined that the information interaction state is an information interaction abnormal state, that is, the wireless communication system of the current auxiliary station is in an information island; if there are a wireless communication subsystem with an interaction abnormal sub-state and a wireless communication subsystem with an interaction normal sub-state, then the communication connection between the current auxiliary station and the candidate communication agency is switched to the wireless communication subsystem with the interaction normal sub-state, and the name information of the wireless communication subsystem with the interaction abnormal sub-state is sent to the control center.

[0028] Among them, the wireless communication subsystem can be any communication system in the wireless communication system. Exemplarily, the wireless communication subsystem can be a TETRA system, an LTE-M system or a 5G public network system. The information interaction sub-state refers to the network state of the wireless communication subsystem. Exemplarily, the information interaction sub-state can be an interaction abnormal sub-state or an interaction normal sub-state. The interaction abnormal sub-state can characterize that the network state of the wireless communication subsystem is abnormal. The interaction normal sub-state can characterize that the network state of the wireless communication subsystem is normal.

[0029] Among them, the current wireless communication data refers to the wireless communication data obtained by the cross-network interworking conversion device from the current auxiliary station at the current moment. Exemplarily, the current wireless communication data can be text data or voice data. The satellite transmission message refers to the message data obtained by performing format conversion on the current wireless communication data. Exemplarily, converting the current wireless communication data into the message data accepted by the satellite communication system is the satellite transmission message.

[0030] Among them, the target communication agency refers to the candidate communication agency that receives the current wireless communication data. Exemplarily, the satellite communication system parses the satellite transmission message to obtain the target communication agency identifier, and determines the target communication agency according to the target communication agency identifier, and sends the satellite transmission message to the target communication agency. The target communication agency identifier can uniquely represent the identity of the target communication agency.

[0031] It can be understood that by introducing the satellite communication system and the cross-network interworking conversion device to construct a communication assistance system, it is realized that when the wireless communication system of the current auxiliary station is in an information island, the current wireless communication data is sent to the target communication agency through the satellite communication system, avoiding communication interruption and the occurrence of unexpected situations, improving the reliability and stability of the communication between the current auxiliary station and the candidate communication agency, and further improving the security of the current auxiliary station.

[0032] In an optional embodiment, the cross-network intercommunication conversion device is also used to determine the satellite transmission message based on the current wireless communication data, and send the satellite transmission message to the satellite communication system, including: the cross-network intercommunication conversion device is specifically used to determine the current wireless resolution protocol corresponding to the current wireless communication data, and according to the current wireless resolution protocol, parse the current wireless communication data to obtain the current wireless transmission data; the cross-network intercommunication conversion device is specifically used to determine the satellite transmission message based on the current wireless transmission data.

[0033] Among them, the current wireless communication parsing protocol can be used to parse the current wireless communication data. The current wireless transmission data refers to the data obtained after parsing the current wireless communication data. Exemplarily, the current wireless transmission data includes the current station identification of the current auxiliary station, the current main calling device identification, the target communication agency identification, the current communication train number in the current auxiliary station and the current communication content.

[0034] Among them, the current station identifier can be used to uniquely represent the identity of the current auxiliary station. The current communication train number refers to the number of the train involved in the current wireless communication data, that is, the current communication train number can be used to uniquely represent the identity of the train involved in the current wireless communication data. The current main call device refers to the device that sends the current wireless communication data in the current auxiliary station. Exemplarily, the current main call device can be one of a fixed station in the station, a vehicle-mounted station on the train, and a user's mobile terminal. The current main call device identifier refers to the unique identifier of the device that initiates the call in the current wireless communication data, that is, the current main call device identifier can uniquely represent the identity of the device that initiates the call. Exemplarily, the current main call device identifier can be a network identification code or a hardware identification code.

[0035] For example, the current communication train number may represent the train that sends the current wireless communication data. The current communication content refers to the specific content in the current wireless communication data. For example, the current communication content may be that train A is about to enter the station.

[0036] For example, see Figure 1B The flowchart of the conversion between the current wireless communication data and the satellite transmission message shown in the figure. Specifically, if the current wireless communication data is a TETRA (Terrestrial Trunked Radio) short message, the TETRA short message is first parsed into the target communication agency identifier, the current main call device identifier, the current communication train number and the text data packet, and then the text data packet is superimposed and transcribed to obtain the current station identifier and the current communication content, and the current station identifier of the current auxiliary station, the target communication agency identifier, the current main call device identifier in the current auxiliary station, the current communication train number and the current communication content are converted to obtain the satellite transmission message.

[0037] Exemplarily, refer to Figure 1B the flowchart of the mutual conversion between the current wireless communication data and the satellite transmission message shown. Specifically, if the current wireless communication data is a TETRA voice message, the TETRA voice message is first parsed into a target communication agency identifier, the current communication train number, and a voice data packet, and then the voice data packet is superimposed and transcribed to obtain the current station identifier and the current communication content. The current station identifier of the current auxiliary station, the target communication agency identifier, the current master calling device identifier in the current auxiliary station, the current communication train number, and the current communication content are converted to obtain a satellite transmission message.

[0038] It should be noted that when the current wireless communication data is one of an LTE-M (LTE-Machine-to-Machine, a wireless communication standard) short message, an LTE-M voice message, a 5G (fifth-generation mobile communication technology) public network short message, and a 5G public network voice message, reference can be made to Figure 1B to obtain the corresponding satellite transmission message; correspondingly, based on Figure 1B the satellite transmission message can be converted into one of the corresponding LTE-M short message, LTE-M voice message, 5G public network short message, and 5G public network voice message.

[0039] It can be understood that by parsing the current wireless communication data according to the current wireless parsing protocol to obtain the current wireless transmission data, and then generating a satellite transmission message based on the current wireless transmission data, the accuracy of the generated satellite transmission message is improved.

[0040] In an alternative embodiment, the cross-network interworking conversion device is specifically configured to determine the current wireless parsing protocol corresponding to the current wireless communication data, including: the cross-network interworking conversion device is specifically configured to determine the wireless communication type of the current wireless communication data, and determine the current wireless parsing protocol from the preset candidate wireless parsing protocols according to the wireless communication type.

[0041] Among them, the wireless communication type refers to the type of the current wireless communication data. Exemplarily, the wireless communication type may include TETRA, LTE-M, 5G public network, and 5G private network. The candidate wireless parsing protocol refers to the parsing protocols corresponding to different wireless communication types preset in the cross-network interworking conversion device. The current wireless parsing protocol refers to the candidate wireless parsing protocol used to parse the current wireless communication data.

[0042] It can be understood that by determining the current wireless parsing protocol according to the wireless communication type of the current wireless communication data, the accuracy of the determined current wireless parsing protocol is improved.

[0043] In an alternative embodiment, if the number of current wireless communication data is at least two, the system further includes: the cross-network interoperability conversion device is further configured to respectively determine the current data transmitters of the current wireless communication data, and respectively determine the current data transmission levels of the current wireless communication data according to the current data transmitters and the preset corresponding relationship between the transmitter levels; the cross-network interoperability conversion device is further configured to determine the data transmission order of the current wireless communication data according to the current data transmission levels, and parse and transmit the corresponding current wireless communication data according to the data transmission order.

[0044] Among them, the current data transmitter can be used to transfer wireless communication data. Exemplarily, the current data transmitter can be the current data sender or the current data receiver. The current data receiver refers to the candidate data sender that sends the current wireless communication data. The candidate data sender refers to the object within the current auxiliary station that can send wireless communication data to the cross-network interoperability conversion device. Exemplarily, the candidate data senders can include the staff on the trains within the jurisdiction of the current auxiliary station and the management personnel within the current auxiliary station, etc.

[0045] Among them, the corresponding relationship between the transmitter levels refers to the preset corresponding relationship between the candidate data transmitters and the data transmission priorities. The embodiments of the present invention do not make any limitations on the setting of the corresponding relationship between the transmitter levels, and can be set by those skilled in the art according to experience or needs. The current data transmission level refers to the transmission priority of the current wireless communication data. The data transmission order refers to the transmission order of the current wireless communication data.

[0046] It should be noted that parsing the current wireless communication data means determining the satellite transmission message, and transmission means sending the satellite transmission message to the satellite communication system.

[0047] It can be understood that when the number of the current wireless communication data is multiple, according to the current data transmitters of the current wireless communication data and the corresponding relationship between the transmitter levels, the current data transmission levels of the current wireless communication data are determined, and then according to the current data transmission levels, the data transmission order is determined, and according to the data transmission order, the corresponding current wireless communication data is protocol-parsed and transmitted, improving the orderliness and timeliness of transmitting the current wireless communication data.

[0048] In an alternative embodiment, the communication assistance system further includes: a wired communication system, a wireless communication system, and a satellite communication terminal. Among them, the wired communication system is communicatively connected to the wireless communication system and is used for communication between the current auxiliary station and the candidate communication institutions; the wireless communication system is communicatively connected to the cross-network interoperability conversion device and is used for communication between the candidate data transmitters within the current auxiliary station and the cross-network interoperability conversion device; the satellite communication terminal is communicatively connected to the satellite communication system and is used for processing and displaying the satellite transmission message.

[0049] Exemplarily, refer to Figure 1C the schematic structural diagram of the communication assistance system shown in the figure. Among them, the communication assistance system includes a satellite communication system, a cross-network interconnection conversion device, a wired communication system, a wireless communication system, and a satellite communication terminal.

[0050] Among them, the satellite communication terminal can be set in the control center, used to parse and restore the satellite transmission message to obtain the current wireless communication data and display it.

[0051] In the embodiment of the present invention, the information interaction state determined by the cross-network interconnection conversion device can characterize the working state of the wired communication system, that is, whether the wired communication system has a fault or a heavy load can be determined through the information interaction state.

[0052] It can be understood that by introducing the wired communication system, the wireless communication system, and the satellite communication terminal into the communication assistance system, the supplement of the data flow direction in the communication assistance system is realized, and the comprehensiveness of the communication assistance system is improved.

[0053] On the basis of the above technical solution, the embodiment of the present invention also provides a communication assistance system for a station including a satellite communication system, a cross-network interconnection conversion device, a wired communication system, and a wireless communication system.

[0054] Exemplarily, refer to Figure 1D the schematic structural diagram of a part of the communication assistance system deployed in the station shown in the figure. Among them, the satellite communication system includes a BDS (BeiDou Navigation Satellite System) transceiver, a BDS antenna, and a BDS satellite. The BDS transceiver is used to convert the satellite transmission message into a wireless signal and send it to the BDS antenna. The BDS antenna is used to send the wireless signal to the BDS satellite. The BDS satellite is used to send the wireless signal to the target communication agency. Among them, the wired communication system includes a dedicated transmission system and an operator transmission system. The wireless communication system includes a TETRA system, an LTE-M system, and a 5G public network system. LCX represents a leaky coaxial cable, and 5GC represents a 5G core network. The BDS transceiver can also be integrated in the cross-network interconnection conversion device.

[0055] The embodiment of the present invention also provides a communication assistance system for a control center including a satellite communication system and a satellite communication terminal. Exemplarily, refer to Figure 1E the part of the communication assistance system deployed in the control center shown in the figure.

[0056] In an embodiment of the present invention, the satellite communication terminal of the target control center can receive the current wireless indication data, parse the current wireless indication data according to the corresponding wireless communication protocol to obtain a satellite indication message; the satellite communication terminal forwards the satellite indication message to the cross-network interworking conversion device of the current auxiliary station through the satellite communication system; the cross-network interworking conversion device can restore the satellite indication message to obtain the current wireless indication data, and send the current wireless indication data to the wireless communication system; the wireless communication system feeds back the current wireless indication data to the corresponding current data recipient.

[0057] Among them, the current wireless indication data can be the reply data of the target control center to the current wireless communication data, or the command data of the target control center to the current auxiliary station. Exemplarily, the current wireless indication data may include the current station identifier, the target control center identifier, the current master calling device identifier, the current communication train number, and the current indication content. Among them, the target control center identifier can uniquely represent the identity of the target control center. The current indication content refers to the specific content in the current wireless indication data. For example, the current indication content can be to allow Train B to leave the station.

[0058] Among them, the satellite indication short message refers to the message data obtained by parsing the current wireless communication indication data according to the wireless communication protocol. The current data recipient refers to the candidate data recipient corresponding to the current wireless indication data. The candidate data recipient refers to an object within the current auxiliary station that can receive the wireless communication data sent by the cross-network interworking conversion device. Exemplarily, the candidate data recipient can be the same as the candidate data sender, and the current data recipient can be the same as the current data sender.

[0059] Embodiment 2

[0060] Figure 2 It is a flowchart of a communication assistance method provided by Embodiment 2 of the present invention. This embodiment is applicable to the situation where wireless communication data is transmitted via satellite when the network status between a station and other stations or a control center is abnormal. This method can be executed by a communication assistance system.

[0061] See Figure 2 The communication assistance method shown is applied to a communication assistance system and includes:

[0062] S210. Determine the information interaction status between the current auxiliary station and the candidate communication institution through the cross-network interworking conversion device. If the information interaction status is an interaction abnormal status, obtain the current wireless communication data within the current auxiliary station.

[0063] Among them, the communication assistance system can be used for emergency transmission of communication data in case of communication interruption between the current assisted station and other candidate communication institutions. The satellite communication system can be used to forward the communication data to the target communication institution. The cross-network interworking conversion device can be used to convert the communication data into short messages that the satellite communication system can receive.

[0064] Among them, the current assisted station refers to the station that uses the communication assistance system. The candidate communication institution refers to the institution that has a communication connection with the current assisted station. Exemplarily, the candidate communication institution can include a candidate communication station and a candidate communication control center. The candidate communication station refers to the station that has a communication connection with the current assisted station. The candidate communication control center refers to the control center that has a communication connection with the current assisted station.

[0065] Among them, the information interaction state refers to the network connection state between the current assisted station and the candidate communication institution. Exemplarily, the information interaction state can be a normal interaction state or an abnormal interaction state. The normal interaction state means that the network connection between the current assisted station and the candidate communication institution is normal, that is, the current assisted station can send wireless communication data to the candidate communication institution. The abnormal interaction state means that the network connection between the current assisted station and the candidate communication institution is abnormal, that is, the current assisted station cannot send wireless communication data to the candidate communication institution.

[0066] Among them, the current wireless communication data refers to the wireless communication data obtained by the cross-network interworking conversion device from within the current assisted station at the current moment. Exemplarily, the current wireless communication data can be text data or voice data.

[0067] S220. Determine a satellite transmission message according to the current wireless communication data through the cross-network interworking conversion device, and send the satellite transmission message to the satellite communication system.

[0068] Among them, the satellite transmission message refers to the message data obtained by converting the format of the current wireless communication data. Exemplarily, converting the current wireless communication data into the message data that the satellite communication system can accept is the satellite transmission message.

[0069] In an optional embodiment, a satellite transmission message is determined based on current wireless communication data through an inter-network intercommunication conversion device, and the satellite transmission message is sent to a satellite communication system, including: determining a current wireless resolution protocol corresponding to the current wireless communication data through an inter-network intercommunication conversion device, and parsing the current wireless communication data according to the current wireless resolution protocol to obtain current wireless transmission data; wherein the current wireless transmission data includes the current station identifier of the current auxiliary station, the target communication organization identifier, the current main call device identifier in the current auxiliary station, the current communication train number and the current communication content; and determining a satellite transmission message based on the current wireless transmission data through an inter-network intercommunication conversion device.

[0070] Among them, the current wireless communication parsing protocol can be used to parse the current wireless communication data. The current wireless transmission data refers to the data obtained after parsing the current wireless communication data. Exemplarily, the current wireless transmission data includes the current station identification of the current auxiliary station, the target communication mechanism identification, the current main calling device identification in the current auxiliary station, the current communication train number and the current communication content.

[0071] Among them, the current station identifier can be used to uniquely represent the identity of the current auxiliary station. The current main call device refers to the device that sends the current wireless communication data in the current auxiliary station. Exemplarily, the current main call device can be one of the fixed station in the station, the on-board station on the train and the user's mobile terminal. The current main call device identifier refers to the unique identifier of the device that initiates the call in the current wireless communication data, that is, the current main call device identifier can uniquely represent the identity of the device that initiates the call. Exemplarily, the current main call device identifier can be a network identification code or a hardware identification code. The current communication train number refers to the number of the train involved in the current wireless communication data, that is, the current communication train number can be used to uniquely represent the identity of the train involved in the current wireless communication data. Exemplarily, the current communication train number can represent the train that sends the current wireless communication data. The current communication content refers to the specific content in the current wireless communication data. For example, the current communication content can be that train A is about to enter the station.

[0072] It can be understood that by parsing the current wireless communication data according to the current wireless analysis protocol to obtain the current wireless transmission data, and then generating a satellite transmission message based on the current wireless transmission data, the accuracy of the generated satellite transmission message is improved.

[0073] In an optional embodiment, the current wireless resolution protocol corresponding to the current wireless communication data is determined by the inter-network intercommunication conversion device, including: determining the wireless communication type of the current wireless communication data by the inter-network intercommunication conversion device, and determining the current wireless resolution protocol from preset candidate wireless resolution protocols based on the wireless communication type.

[0074] Among them, the wireless communication type refers to the type of current wireless communication data. Exemplarily, the wireless communication type may include TETRA, LTE-M, and 5G public networks. The candidate wireless parsing protocol refers to the parsing protocols corresponding to different wireless communication types preset in the cross-network interoperability conversion device. The current wireless parsing protocol refers to the candidate wireless parsing protocol used to parse the current wireless communication data.

[0075] It can be understood that by determining the current wireless parsing protocol according to the wireless communication type of the current wireless communication data, the accuracy of the determined current wireless parsing protocol is improved.

[0076] In an alternative embodiment, if the number of current wireless communication data is at least two, the method further includes: respectively determining the data transmission parties of each current wireless communication data through the cross-network interoperability conversion device, and respectively determining the current data transmission levels of each current wireless communication data according to the corresponding relationship between the data transmission parties and the preset transmission party level; determining the data transmission order of the current wireless communication data through the cross-network interoperability conversion device according to the current data transmission level, and parsing and transmitting the corresponding current wireless communication data according to the data transmission order.

[0077] Among them, the current data transmission party can be used to transfer wireless communication data. Exemplarily, the current data transmission party may be the current data sender or the current data receiver. The current data sender refers to the candidate data sender that sends the current wireless communication data. The candidate data sender refers to the object within the current auxiliary station that can send wireless communication data to the cross-network interoperability conversion device. Exemplarily, the candidate data senders may include the staff on the train within the jurisdiction of the current auxiliary station and the management personnel within the current auxiliary station, etc.

[0078] Among them, the corresponding relationship between the transmission party levels refers to the corresponding relationship between the preset candidate data transmission parties and the data transmission priorities. The embodiments of the present invention do not make any limitations on the setting of the corresponding relationship between the transmission party levels, and it can be set by those skilled in the art according to experience or needs. The current data transmission level refers to the transmission priority of the current wireless communication data. The data transmission order refers to the transmission order of the current wireless communication data.

[0079] It should be noted that parsing the current wireless communication data means determining the satellite transmission message, and transmission means sending the satellite transmission message to the satellite communication system.

[0080] It can be understood that when the quantity of current wireless communication data is multiple, according to the current data transmitters of each current wireless communication data and the corresponding relationship between the transmitter levels, the current data transmission levels of each current wireless communication data are determined. Then, according to the current data transmission levels, the data transmission order is determined. According to the data transmission order, protocol parsing and transmission are performed on the corresponding current wireless communication data, improving the orderliness and timeliness of transmitting the current wireless communication data.

[0081] S230, forward the satellite transmission message to the target communication institution through the satellite communication system.

[0082] Among them, the target communication institution refers to the candidate communication institution that receives the current wireless communication data. Exemplarily, the satellite communication system parses the satellite transmission message to obtain the target communication institution identifier, and determines the target communication institution according to the target communication institution identifier, and sends the satellite transmission message to the target communication institution. The target communication institution identifier can uniquely represent the identity of the target communication institution.

[0083] The embodiment of the present invention provides a communication assistance solution. The cross-network interconnection conversion device is used to determine the information interaction status between the current auxiliary station and the candidate communication institution. If the information interaction status is an abnormal interaction status, the current wireless communication data in the current auxiliary station is obtained; the cross-network interconnection conversion device determines a satellite transmission message according to the current wireless communication data, and sends the satellite transmission message to the satellite communication system; the satellite communication system forwards the satellite transmission message to the target communication institution. In the above solution, by introducing the satellite communication system and the cross-network interconnection conversion device to construct a communication assistance system, when the wireless communication system of the current auxiliary station is in an information island situation, the current wireless communication data is sent to the target communication institution through the satellite communication system, avoiding communication interruption and the occurrence of unexpected situations, improving the reliability and stability of communication between the current auxiliary station and the candidate communication institution, and further improving the security of the current auxiliary station.

[0084] On the basis of the above technical solution, the communication assistance system further includes a wired communication system and a wireless communication system. The method further includes: communicatively connecting the current auxiliary station and the candidate communication institution through the wired communication system; communicatively connecting the candidate data transmitter inside the current auxiliary station and the cross-network interconnection conversion device through the wireless communication system; processing and displaying the satellite transmission message through the satellite communication terminal.

[0085] In the embodiment of the present invention, the information interaction status determined by the cross-network interconnection conversion device can represent the working status of the wired communication system, that is, whether the wired communication system has a fault or is overloaded can be determined through the information interaction status.

[0086] Among them, the satellite communication terminal can be set in the control center, which is used to parse and restore the satellite transmission message, obtain the current wireless communication data, and display it.

[0087] It can be understood that by introducing the wired communication system, the wireless communication system and the satellite communication terminal into the communication assistance system, the supplement of the data flow direction in the communication assistance system is realized, and the comprehensiveness of the communication assistance system is improved.

[0088] In the embodiment of the present invention, the cross-network interconnection conversion device can also obtain the data interaction status between the wireless communication system and the cross-network interconnection conversion device; when the data interaction status is abnormal data interaction, a satellite transmission message including the current station identifier, the target communication agency identifier, and the wireless communication abnormal content is generated, and the abnormal transmission message is sent to the satellite communication system, so that the satellite communication system forwards the satellite transmission message to the target communication agency.

[0089] It should be noted that if there are at least two wireless communication subsystems in the wireless communication system and there is at least one wireless communication subsystem with normal data interaction, the communication connection between the cross-network interconnection conversion device and the wireless communication system is switched to the wireless communication subsystem with normal data interaction. Among them, the wireless communication subsystem can be any communication system in the wireless communication system. Exemplarily, the wireless communication subsystem can be a TETRA system, an LTE-M system, or a 5G public network system.

[0090] Among them, the data interaction status refers to the network status between the wireless communication system and the cross-network interconnection conversion device. Exemplarily, the data interaction status can be normal data interaction or abnormal data interaction. Normal data interaction means that there is no abnormality in the network connection between the wireless communication system and the cross-network interconnection conversion device. Abnormal data interaction means that there is an abnormality in the network connection between the wireless communication system and the cross-network interconnection conversion device. The wireless communication abnormal content refers to the data content with abnormalities in the wireless communication system. The abnormal transmission message refers to the message indicating that there is an abnormality in the wireless communication system sent to the satellite communication system.

[0091] Embodiment Three

[0092] Based on the above embodiments, the embodiment of the present invention provides an optional example. It should be noted that for the parts not detailed in the embodiment of the present invention, reference can be made to the descriptions of other embodiments.

[0093] Industry Background of Rail Transit: With the rapid advancement of urbanization, urban rail transit has gradually become an important way to solve urban traffic congestion and improve travel efficiency due to its large transport capacity, high speed, and high punctuality rate. The expansion of the rail transit network scale and the increase in operation complexity have made ensuring passenger safety and optimizing emergency management capabilities the core challenges for operating enterprises. Importance of Emergency Communication: The rail transit system highly relies on information transmission during daily operations. Especially in natural disasters (such as earthquakes and floods), human accidents (such as fires and equipment failures), or social activities (such as security requirements for major events), the continuity and reliability of emergency communication are crucial for handling emergencies. If emergency information cannot be transmitted in a timely manner, it may lead to service interruptions, rescue delays, and even serious secondary disasters. Currently, the rail transit system mainly relies on wireless communication technologies (TETRA, LTE-M, 5G public and private networks) for information interaction between stations and control centers, and between trains and stations. However, the independence of these technologies and their high dependence on the ground network have exposed many limitations in complex scenarios.

[0094] In the existing technologies, the limitations of wireless communication technologies include: The TETRA system, that is, the traditional dedicated trunking communication system, has good trunking voice dispatching capabilities, but its data transmission rate is low, only suitable for basic information transmission, and it is difficult to support large-scale multimedia data communication. The LTE-M system, that is, the wireless communication system based on narrowband Internet of Things technology, has a wide coverage range and low power consumption, suitable for some lightweight data transmission scenarios. However, its spectrum resources are limited, and congestion is likely to occur in the case of large-scale concurrency. The 5G public network system, relying on the 5G NSA / SA core network, has the characteristics of high speed and low latency, and can meet the needs of high-definition video transmission and real-time monitoring. However, its base station equipment is complex and highly dependent on power supply and ground transmission networks, and it is easy to fail in case of disasters. Although the above wireless communication technologies have played an important role in daily operations, due to the independent operation of the systems and poor protocol interoperability, the following problems have occurred: Irreplaceability of System Failures: When a certain system (such as TETRA) fails, it cannot be automatically switched to other systems (such as LTE-M or 5G); Isolation of Communication Links: When the ground transmission is interrupted or the base station is damaged, the connection between stations and control centers, and between trains and stations may be completely lost, forming an "information island"; Difficulty in Ensuring Emergency Communication: In the case of major disasters or a sharp increase in the load of the public network, the ground network is often unusable due to overload or damage, and the on-site situation cannot be reported in a timely manner or instructions cannot be received.

[0095] In the prior art, the Beidou satellite communication system (BDS) has demonstrated important value in extreme scenarios with its unique short message communication capability. It has non-blind area coverage: the Beidou satellite system does not rely on ground networks and its communication range covers the whole country, with high availability; short message two-way communication: it can achieve the sending and receiving of short messages, suitable for emergency dispatch, instruction issuance and location reporting; high controllability: BDS has high controllability and flexibility, suitable for popularization and application in rail transit emergency scenarios. Although Beidou short message communication has been applied in industries such as fishery, shipping, and forest fire prevention, its application in the field of urban rail transit is still in the exploratory stage. Especially in the integration of multi-mode wireless communication and protocol adaptation, in-depth research is still needed.

[0096] In the embodiments of the present invention, to address the limitations of existing wireless communication technologies and the requirements of rail transit operations, the embodiments of the present invention propose to integrate the Beidou short message communication system with existing ground wireless communication systems (TETRA, LTE-M, 5G) to construct an air-ground-space integrated emergency communication auxiliary system. The necessity of this technology integration is as follows: enhancing system reliability, when the ground network fails, Beidou short message communication can serve as the final fallback mechanism to ensure the uninterrupted emergency communication; achieving cross-mode integration, the introduction of cross-network interworking conversion devices makes it possible to interoperate between different wireless communication modes; improving the emergency response ability, Beidou short message communication can achieve real-time information reporting and instruction transmission in disaster scenarios, greatly improving the rescue efficiency; meeting future development needs, with the gradual development of new technologies such as 5G R17 and satellite Internet, the air-ground-space integrated communication system has good scalability and can adapt to the diverse needs of future rail transit scenarios.

[0097] The embodiments of the present invention aim to construct an air-ground-space integrated emergency communication auxiliary system (i.e., the communication auxiliary system), which deeply integrates Beidou satellite short messages with existing ground wireless communication systems (TETRA, LTE-M, 5G public and private networks). Through cross-network interworking conversion devices, the communication auxiliary system can automatically switch to other available networks when a single network fails, or switch to Beidou short messages when all ground networks fail, to achieve reliable transmission of emergency information, thereby enhancing the redundancy, reliability and operational safety of the urban rail transit system.

[0098] The communication auxiliary system provided by the embodiments of the present invention consists of three parts: air (satellite communication system), sky (wireless communication system) and ground (wired transmission system). Each part is connected through cross-network interworking conversion devices to form a highly reliable and highly redundant emergency communication network.

[0099] Exemplarily, as the core redundancy mechanism of the communication assistance system, the satellite communication system features a wide coverage range and is independent of ground infrastructure. Beidou transceiver devices are installed at stations and control centers for the sending and receiving of emergency short messages (i.e., satellite transmission messages).

[0100] Exemplarily, the wireless communication system includes existing TETRA, LTE-M, and 5G public network systems, which support the wireless communication requirements for daily voice, data, and video communications. The cross-network interworking conversion device monitors the status of the wireless communication network in real time and automatically switches to an available network or Beidou communication link when a fault is detected. The wired transmission system (existing system) utilizes the dedicated transmission communication network of rail transit and the operator transmission network to achieve data backhaul and interaction between stations and control centers in the TETRA, LTE-M, and 5G public network systems.

[0101] Exemplarily, the cross-network interworking device is the core component of the system, and its functions include: multi-mode protocol parsing, parsing the voice, SMS, and data protocols of TETRA, LTE-M, and 5G and converting them into a unified format; Beidou short message encapsulation: compressing and encoding the ground network information and encapsulating it into a Beidou short message, and then sending it to the satellite; automatic switching and redundancy guarantee, monitoring the status of each network in real time and switching to an available communication path according to the fault condition; message priority processing, assigning different priorities to emergency information to ensure the priority transmission of high-priority information.

[0102] The communication assistance system in the embodiments of the present invention has the following functions: emergency information transmission, when the ground network is unavailable, transmitting emergency information from the station to the control center through Beidou short messages; automatic fault switching, quickly switching to other networks after detecting a fault in a certain wireless communication subsystem to avoid communication interruption; voice and data fusion, the cross-network device can convert voice information into text and then send it through Beidou short messages to improve the information transmission efficiency; visual monitoring and scheduling: deploying a BDS emergency communication terminal (i.e., satellite communication terminal) at the control center, which can monitor the operation status of each network in real time and conduct unified scheduling. Among them, the failure of the wireless communication subsystem may include the communication interruption between the wireless communication subsystem and other stations or control centers, as well as the communication interruption between the wireless communication subsystem and the cross-network interworking conversion device.

[0103] Exemplarily, normal operation scenario: In the communication assistance system, each system maintains regular communication through the cross-network interconnection conversion device to ensure smooth data interaction among the TETRA, LTE-M, and 5G wireless communication subsystems. Single network failure scenario: When a certain wireless communication subsystem fails, the cross-network interconnection conversion device automatically switches to other available networks to maintain the communication function. Ground network (i.e., wired communication system) complete failure scenario: When all ground networks are unavailable, the cross-network interconnection conversion device enables the Beidou short message communication function to maintain the most basic information interaction with the control center.

[0104] Exemplarily, the cross-network interconnection conversion device can achieve seamless integration of TETRA, LTE-M, 5G, and Beidou short messages; in the case of complete failure of all ground communications, the Beidou short message serves as the final communication guarantee mechanism; it supports multi-mode protocol parsing and automatic switching to adapt to the complex rail transit operation environment.

[0105] The communication assistance system provided by the embodiments of the present invention has significantly improved redundancy and reliability: the introduction of cross-network devices and the fallback mechanism of Beidou short messages can ensure uninterrupted communication; cross-mode communication integration: realizes unified management and interconnection between different communication modes, optimizing resource utilization; improvement of emergency efficiency: whether it is a station, a train, or a control center, it can quickly access the emergency communication network.

Claims

1. A communication assistance system, characterized in that, Including: A satellite communication system and an inter-network interoperability conversion device, where The inter-network interoperability conversion device is communicatively connected to the satellite communication system and is used to determine the information interaction status between the current auxiliary station and the candidate communication agency. If the information interaction status is an abnormal interaction status, the current wireless communication data in the current auxiliary station is acquired; The inter-network interoperability conversion device is further used to determine a satellite transmission message according to the current wireless communication data and send the satellite transmission message to the satellite communication system; The satellite communication system is used to forward the satellite transmission message to the target communication agency.

2. The system according to claim 1, wherein the inter-network interoperability conversion device is further used to determine a satellite transmission message according to the current wireless communication data and send the satellite transmission message to the satellite communication system, including: The inter-network interoperability conversion device is specifically used to determine the current wireless parsing protocol corresponding to the current wireless communication data and parse the current wireless communication data according to the current wireless parsing protocol to obtain current wireless transmission data; wherein, the current wireless transmission data includes the current station identifier of the current auxiliary station, the current master calling device identifier, the target communication agency identifier, the current communication train number in the current auxiliary station, and the current communication content; The inter-network interoperability conversion device is specifically used to determine a satellite transmission message according to the current wireless transmission data.

3. The system according to claim 2, wherein the inter-network interoperability conversion device is specifically used to determine the current wireless parsing protocol corresponding to the current wireless communication data, including: The inter-network interoperability conversion device is specifically used to determine the wireless communication type of the current wireless communication data and determine the current wireless parsing protocol from the preset candidate wireless parsing protocols according to the wireless communication type.

4. The system according to claim 1, wherein If the number of the current wireless communication data is at least two, the system further includes: The inter-network interoperability conversion device is further used to respectively determine the current data transmission parties of the current wireless communication data and respectively determine the current data transmission levels of the current wireless communication data according to the current data transmission parties and the preset corresponding relationship between the transmission party levels; The inter-network interoperability conversion device is further used to determine the data transmission order of the current wireless communication data according to the current data transmission level and parse and transmit the corresponding current wireless communication data according to the data transmission order.

5. The system according to any one of claims 1-4, characterized in that, The communication auxiliary system further includes: a wired communication system, a wireless communication system, and a satellite communication terminal, where The wired communication system is communicatively connected to the wireless communication system and is used for communication between the current auxiliary station and the candidate communication agency; The wireless communication system is communicatively connected to the inter-network interoperability conversion device and is used for communication between the candidate data transmission parties inside the current auxiliary station and the inter-network interoperability conversion device; The satellite communication terminal is communicatively connected to the satellite communication system and is used to process and display the satellite transmission message.

6. A communication assistance method, characterized in that, Applied to a communication assistance system, the communication assistance system includes a satellite communication system and a cross-network interworking conversion device, and the method includes: Determine, by the cross-network interworking conversion device, the information interaction status between the current auxiliary station and the candidate communication agency. If the information interaction status is an abnormal interaction status, obtain the current wireless communication data within the current auxiliary station; Determine, by the cross-network interworking conversion device, a satellite transmission message according to the current wireless communication data, and send the satellite transmission message to the satellite communication system; Forward, by the satellite communication system, the satellite transmission message to the target communication agency.

7. The method according to claim 6, wherein the determining, by the cross-network interworking conversion device, a satellite transmission message according to the current wireless communication data and sending the satellite transmission message to the satellite communication system includes: Determine, by the cross-network interworking conversion device, the current wireless parsing protocol corresponding to the current wireless communication data, and parse the current wireless communication data according to the current wireless parsing protocol to obtain current wireless transmission data; wherein the current wireless transmission data includes the current station identifier of the current auxiliary station, the current master calling device identifier, the target communication agency identifier, the current communication train number within the current auxiliary station, and the current communication content; Determine, by the cross-network interworking conversion device, a satellite transmission message according to the current wireless transmission data.

8. The method according to claim 7, wherein the determining, by the cross-network interworking conversion device, the current wireless parsing protocol corresponding to the current wireless communication data includes: Determine, by the cross-network interworking conversion device, the wireless communication type of the current wireless communication data, and determine the current wireless parsing protocol from the preset candidate wireless parsing protocols according to the wireless communication type.

9. The method according to claim 6, wherein If the number of the current wireless communication data is at least two, the method further includes: Determine, by the cross-network interworking conversion device, the data transmission parties of the respective current wireless communication data, and determine the current data transmission levels of the respective current wireless communication data according to the data transmission parties and the preset corresponding relationship between the transmission party levels; Determine, by the cross-network interworking conversion device, the data transmission order of the current wireless communication data according to the current data transmission level, and parse and transmit the corresponding current wireless communication data according to the data transmission order.

10. The method according to any one of claims 6-9, characterized in that, The communication assistance system further includes a wired communication system, a wireless communication system, and a satellite communication terminal, and the method further includes: Communicatively connect the current auxiliary station and the candidate communication agency through the wired communication system; Communicatively connect the candidate data transmission party within the current auxiliary station and the cross-network interworking conversion device through the wireless communication system; Process and display the satellite transmission message through the satellite communication terminal.

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