Railway individual soldier emergency communication equipment

Abstract

The invention discloses railway individual soldier emergency communication equipment, which comprises a public network module, a railway special communication module, a Beidou module, an ad hoc network module and a central controller, and is characterized in that the public network module comprises public network modules corresponding to a plurality of public communication networks, and the railway special communication module can establish connection communication with the railway special network; the Beidou module is used for transmitting short messages and realizing positioning processing; the ad hoc network module can establish a local communication network between the railway individual soldier emergency communication equipment; and realizing converged communication of the plurality of wireless communication networks through the central controller. According to the invention, emergency rescue communication can be realized in a complex natural environment through a multi-network integration communication mode, so that the connectivity of an emergency communication network is kept; and a plurality of pieces of railway individual soldier emergency communication equipment can realize an ad-hoc network without any infrastructure or central node, so that the rescue communication requirement is met.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to railway individual emergency communication equipment. Background Art

[0002] With the large-scale construction of railways, railway engineering construction and operation face severe emergency scenarios such as natural disaster risks; moreover, due to the wide operation area of ​​railways, the large number of participants, and the variety of professional trades, when natural disaster risks and other emergency scenarios occur, it is necessary to face more complex and diverse emergency scenarios. When more complex and diverse emergency scenarios occur, if a communication link needs to be quickly established between the emergency site and the command center to ensure the effective implementation of emergency response, command, dispatch and rescue work, the requirements for the communication capabilities of emergency communications are also greatly increased. Moreover, when natural disasters such as earthquakes, sudden large landslides, and mudslides occur, the basic communication network is often damaged by the disaster, which will further bring greater difficulties to emergency rescue command.

[0003] In short, when the above emergency scenarios occur, emergency communication equipment is usually required to have the ability to be quickly built in difficult and complex environments to improve the emergency response speed and provide basic services such as voice when external resources are weak. However, when the public wireless network and dedicated wireless network equipment in emergency scenarios are severely damaged, and the corresponding transportation, electricity and other facilities are also damaged to a certain extent, the current emergency communication equipment often cannot communicate with the outside world through a reliable communication network, resulting in its inability to effectively guarantee the communication needs of the emergency rescue process.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a railway individual emergency communication device to solve the above-mentioned technical problem existing in the prior art that the communication needs of the emergency rescue process cannot be effectively guaranteed.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A railway individual emergency communication device, comprising a public network module, a railway dedicated communication module, a Beidou module, an ad hoc network module and a central controller, wherein:

[0008] The public network module includes a plurality of public communication network corresponding public network modules, which are used to establish connection communication with the corresponding plurality of public wireless communication networks;

[0009] The railway dedicated communication module is used to establish a connection communication with the railway dedicated network; the public wireless communication network and the railway dedicated network are collectively referred to as a wireless communication network;

[0010] The Beidou module is used to transmit short messages according to preset short message information and realize positioning processing;

[0011] A self-organizing network module is used to establish a local communication network for direct communication between the railway individual emergency communication devices through a wireless network, so as to carry out direct communication between the railway individual emergency communication devices;

[0012] The central controller includes a virtual router, and the virtual router is used to realize the integrated communication of the multiple wireless communication networks; the integrated communication of the multiple wireless communication networks includes: monitoring the performance parameters of the corresponding public wireless communication network and each wireless communication network of the railway dedicated network through the public network module and the railway dedicated communication module, and controlling the public network module and the railway dedicated communication module to select one or more communication networks according to predetermined rules to establish connection communication according to the monitoring results, so as to control the transmission service of communication information in emergency scenarios through the established connection, and the predetermined rules include link switching mode and / or load balancing strategy mode;

[0013] Different network namespaces are divided in the central controller, and different wireless communication networks are divided into different network namespaces, each network namespace includes an independent network configuration, each network namespace is connected to the virtual router, and the virtual router forwards data between the network namespaces according to the routes issued by the policy routing controller connected to it;

[0014] In addition, the central controller also controls the Beidou module to transmit the selected short message according to the preset short message and obtain the corresponding positioning information, and controls the self-organizing network module and other railway individual emergency communication equipment to form a local communication network.

[0015] The communication device also includes:

[0016] A voice codec is used to connect with a handheld microphone to obtain input voice information; and it is also connected to the self-organizing network module to transmit the voice information, and / or the voice codec is scheduled and sent by the central controller.

[0017] The communication device also includes:

[0018] The Wi-Fi module is used to provide wireless LAN connection function, enabling the terminal device to connect to the railway individual emergency communication equipment through the Wi-Fi communication mode it provides, and access the on-site emergency communication network.

[0019] The communication device also includes:

[0020] The switching module is used to establish interconnection between the self-organizing network module, the Wi-Fi module and the central controller to realize data exchange and sharing between them.

[0021] The communication device also includes:

[0022] A display screen is used to display the working status of each module included in the communication device and to input the configuration parameters of the communication device through it; and also includes displaying preset short message information and selecting the short message that the Beidou module needs to send according to the obtained operation instruction information.

[0023] The process of the central controller monitoring the performance parameters of each wireless communication network includes:

[0024] Monitor whether each module has logged into the corresponding wireless communication network, whether it is reachable with the emergency rescue command center, the round-trip delay detected by the Ping command with the emergency rescue command center, and TCP connection health indicators, wherein the TCP connection health indicators include packet loss rate, retransmission rate, and congestion window size; and,

[0025] When the link of a module cannot log in to the corresponding wireless network, is unreachable to the emergency rescue command center, the round-trip delay is greater than the set threshold, or the TCP connection health index is lower than the set threshold, the link corresponding to the module is marked as "unavailable", otherwise it is marked as "available".

[0026] In the central controller, the link switching mode and / or load balancing strategy mode includes:

[0027] The link switching mode means that when it is detected that the quality of the current communication link is degraded or interrupted, the current communication link is switched to another wireless communication network that can ensure the quality of the communication link according to the performance parameters of each wireless communication network obtained by monitoring;

[0028] The load balancing strategy mode refers to allocating communication tasks to different wireless communication networks with service capabilities based on a predetermined load balancing strategy in an intelligent manner; the load balancing strategy refers to automatically evaluating the performance parameters of each wireless communication network or channel when multiple wireless communication networks have the ability to provide services, and allocating communication tasks to the optimal one or more wireless communication networks based on the evaluation results, wherein the performance parameters of the wireless communication network or channel include at least its bandwidth and delay.

[0029] The routes issued by the policy routing controller are generated according to the working status of each wireless communication network and the characteristics of the application service, and include:

[0030] When working in link switching mode, only one network namespace is in data forwarding state at the same time; and initially, the available link with the smallest round-trip delay is selected as the working link; when the working link is unavailable, the available non-working link with the smallest round-trip delay is reselected as the working link, and then the policy routing controller generates a routing configuration instruction to notify the virtual router to update the routing configuration and put the network namespace where the working link is located into the data forwarding state;

[0031] and / or,

[0032] When working in load balancing policy mode, the network command space where all available links are located is in data forwarding state, and the policy routing controller configures a routing policy for each TCP / UDP connection based on the four-tuple consisting of source IP address, source port number, destination IP address and destination port number, and sends it to the virtual router.

[0033] Compared with the prior art, the railway individual emergency communication equipment provided by the present invention integrates multiple functions such as public mobile communications, railway 5G-R private network, Beidou positioning and short messages, self-organizing networks, Wi-Fi, audio and video acquisition and transmission, so that the emergency communication equipment can realize emergency rescue communications in complex natural environments; moreover, through the multi-network integrated communication method, the public mobile communication operator network and the railway 5G-R private network can be seamlessly integrated into a reliable and interoperable emergency communication network, supporting link switching, load balancing and other application scenarios, and maximizing the connectivity of the emergency communication network; in addition, through the corresponding railway individual emergency communication equipment integrating self-organizing network communication capabilities, multiple railway individual emergency communication equipment can be interconnected in a self-organizing manner without any infrastructure or central node to achieve collaborative rescue, so as to meet the rescue communication needs in complex scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of a railway individual emergency communication device provided by an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of a multi-network integration implementation method provided by an embodiment of the present invention;

[0037] Figure 3A schematic diagram of a self-organizing network between railway individual emergency communication devices provided by an embodiment of the present invention;

[0038] Figure 4 A schematic diagram of the Beidou short message sending process provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments, which does not constitute a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0040] First, the terms that may be used in this article are explained as follows:

[0041] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y means both “X” or “Y” and “X and Y”.

[0042] The terms "include", "comprises", "contains", "has" or other descriptions with similar semantics should be interpreted as non-exclusive inclusion. For example, including certain technical feature elements (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or products, etc.) should be interpreted as including not only certain technical feature elements explicitly listed, but also other technical feature elements known in the art that are not explicitly listed.

[0043] The term "consisting of..." means excluding any technical feature elements not explicitly listed. If this term is used in a claim, it will make the claim closed, so that it does not contain technical feature elements other than the technical feature elements explicitly listed, except for the conventional impurities related to them. If this term only appears in a clause of a claim, it only limits the elements explicitly listed in the clause, and the elements recorded in other clauses are not excluded from the overall claim.

[0044] The term "parts by mass" refers to the mass ratio relationship between multiple components. For example, if it is described that component X is x parts by mass and component Y is y parts by mass, then the mass ratio of component X to component Y is x:y. 1 part by mass can represent any mass, for example, 1 part by mass can be represented as 1 kg or 3.1415926 kg. The sum of the parts by mass of all components is not necessarily 100 parts, but can be greater than 100 parts, less than 100 parts or equal to 100 parts. Unless otherwise specified, the parts, proportions and percentages described herein are all measured by mass.

[0045] Unless otherwise specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0046] When concentration, temperature, pressure, size or other parameters are expressed in the form of a numerical range, the numerical range should be understood to specifically disclose all ranges formed by the pairing of any upper limit, lower limit, and preferred value in the numerical range, regardless of whether the range is explicitly stated; for example, if a numerical range of "2 to 8" is stated, the numerical range should be interpreted as including ranges such as "2 to 7", "2 to 6", "5 to 7", "3 to 4 and 6 to 7", "3 to 5 and 7", "2 and 5 to 7", etc. Unless otherwise specified, the numerical ranges stated herein include both their end values ​​and all integers and fractions within the numerical range.

[0047] The orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation of this document.

[0048] A railway individual emergency communication device provided by the present invention is described in detail below. The contents not described in detail in the embodiments of the present invention belong to the prior art known to professional and technical personnel in the field. If no specific conditions are specified in the embodiments of the present invention, the conventional conditions in the field or the conditions recommended by the manufacturer are followed. If the manufacturer of the reagents or instruments used in the embodiments of the present invention is not specified, they are all conventional products that can be purchased commercially.

[0049] In the specific implementation process of the present invention, the main technical problems that need to be solved include: enabling the corresponding railway individual emergency communication equipment to have the ability to be quickly built in a difficult and complex environment to improve the emergency response speed; at the same time, it is also required to be able to provide basic communication services such as voice when external resources are weak; furthermore, when emergency scenarios such as natural disasters occur, the corresponding transportation, electricity and other infrastructure are often damaged. At this time, if the emergency communication equipment is to be convenient for transportation and can meet basic communication needs under low power consumption, it is necessary to design miniaturized emergency communication equipment, which places high demands on its integration. Based on the above technical problems that need to be solved, the present invention specifically requires a miniaturized, mobile and multi-communication-standard integrated railway individual emergency communication equipment, so as to effectively guarantee the communication needs in emergency scenarios.

[0050] Specifically, in the specific implementation process, the present invention provides a miniaturized, mobile, high-protection-level, and multi-communication-system-integrated railway individual emergency communication equipment, which can support multiple (such as 3) operators' 5G communications, railway 5G-R communications, ad hoc networks, Beidou short messages, Wi-Fi, and other communication methods, so that the equipment can be applied to the complex natural environment and operation characteristics along the railway. Moreover, in the corresponding railway individual emergency communication equipment, a multi-network fusion technical solution is also adopted, and two working modes, link switching and load balancing, are specifically designed, which can not only reduce the risk of communication interruption caused by a single network failure, but also greatly improve the coverage and communication quality of emergency communications; so that in a complex emergency environment, the corresponding railway individual emergency communication equipment can quickly adapt to and connect to the optimal network to ensure smooth communication, and then ensure that the command center can grasp the on-site situation in real time through the corresponding railway individual emergency communication equipment, and effectively improve the rescue efficiency in emergency scenarios.

[0051] The specific implementation of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] The railway individual emergency communication device provided by the present invention is composed of a device host and a battery module, and its implementation structure is as follows: Figure 1 As shown, the device host integrates 5G communications of three operators (public network 5G module 1, public network 5G module 2, public network 5G module 3), railway 5G-R communication, ad hoc network module, Beidou short message (Beidou module), Wi-Fi module, etc., so as to realize multiple communication modes. The corresponding battery module uses a semi-solid lithium battery that can work in a low-temperature environment. It has the characteristics of high capacity density and high safety, and is easy to disassemble, which is suitable for the complex rescue environment of the railway.

[0053] Specifically, refer to Figure 1As shown, the specific implementation structure of the railway individual emergency communication equipment may include a public network module, a railway dedicated communication module, a Beidou module, an ad hoc network module and a central controller, wherein:

[0054] (1) The railway dedicated communication module is used to establish a connection and communication with the railway dedicated network; the public wireless communication network and the railway dedicated network are collectively referred to as a wireless communication network;

[0055] Specifically, it can be a railway 5G-R communication module. A railway 5G-R communication module can be configured on the device host, which can access the railway 5G-R dedicated mobile communication network. When the railway 5G-R network is available, the device can give priority to using the 5G-R network to communicate with the railway emergency command center;

[0056] (2) The public network module includes a plurality of public network modules corresponding to the public communication networks, and is used to establish connection communication with the plurality of public wireless communication networks corresponding thereto;

[0057] Specifically, it can be a public network 5G module. For example, the device host can be configured with 3 public network 5G modules, namely public network 5G module 1, public network 5G module 2, and public network 5G module 3, which can be connected to the networks of 3 public mobile communication operators respectively, and can achieve efficient and stable data transmission within the coverage of any mobile public network, providing multimedia communication services for emergency command;

[0058] (3) Beidou module

[0059] It can be used to transmit short messages according to preset short message information and realize positioning processing;

[0060] Specifically, the device host can be configured with a Beidou module, which has Beidou short message and Beidou positioning functions. When the railway 5G-R network and the public mobile communication operator network cannot work normally, short messages can also be sent through the Beidou module;

[0061] (4) Self-organizing network module

[0062] It can be used to establish a local communication network for direct communication between the railway individual emergency communication devices through a wireless network, so as to carry out direct communication between the railway individual emergency communication devices;

[0063] Specifically, the device host can be configured with an ad hoc network module, which allows railway individual emergency communication devices to communicate directly in an ad hoc network without an infrastructure network, and quickly establish a temporary communication network at the emergency site in an emergency. The ad hoc network module can also be connected to a voice codec to achieve voice intercom communication based on an ad hoc network between railway individual emergency communication devices;

[0064] Further, the voice codec can be used to connect with the handheld microphone to obtain the voice information input by the user; and it can also be connected with the ad hoc network module to transmit the voice information, and / or the voice codec can also be scheduled by the central controller to send the corresponding voice information;

[0065] (5) Central Controller

[0066] It is the core processing unit of the entire device, responsible for coordinating the work of each module, establishing and monitoring the communication links of the railway 5G-R communication module, the public network 5G module, and the Beidou module, and realizing functions such as multi-network aggregation and routing selection;

[0067] Specifically, the central controller may include a virtual router, and the converged communication of the multiple wireless communication networks is realized through the virtual router; and the converged communication of the multiple wireless communication networks includes:

[0068] The performance parameters of the corresponding public wireless communication network and each wireless communication network of the railway dedicated network are monitored by the public network module and the railway dedicated communication module, and one or more communication networks are selected in the public network module and the railway dedicated communication module according to the monitoring results to establish a connection communication according to a predetermined rule, so as to control the transmission service of communication information in an emergency scenario through the established connection, and the predetermined rule includes a link switching mode and / or a load balancing strategy mode;

[0069] Specifically, different network namespaces can be divided in the central controller, and different wireless communication networks can be divided into different network namespaces, each network namespace includes an independent network configuration, each network namespace is connected to the virtual router, and the virtual router forwards data between the network namespaces according to the routes issued by the policy routing controller connected to it;

[0070] Furthermore, the central controller can also control the transmission of the selected short message and obtain the corresponding positioning information through the Beidou module according to the preset short message, and control the self-organizing network module and other railway individual emergency communication equipment to form a local communication network.

[0071] Reference Figure 1 As shown, the above-mentioned railway individual emergency communication equipment may also include one or more of the following modules:

[0072] (6) Wi-Fi module

[0073] It can be used to provide wireless LAN connection function, so that terminal equipment can connect to railway individual emergency communication equipment through the Wi-Fi communication mode it provides, and access the on-site emergency communication network;

[0074] Specifically, the device host can be configured with a Wi-Fi module to provide wireless LAN connection function, so that terminal devices such as smart phones can be connected to the railway individual emergency communication equipment through the Wi-Fi module, and then access the emergency communication network at the emergency rescue site, thereby realizing wireless transmission and sharing of data.

[0075] (7) Switching module

[0076] It is used to interconnect the self-organizing network module, Wi-Fi module and central controller to realize data exchange and sharing among the modules.

[0077] (8) Display

[0078] It can be used to display the working status of each module included in the communication device, and to input the configuration parameters of the communication device through it; and also includes displaying preset short message information, and selecting the short message that the Beidou module needs to send according to the acquired operation instruction information;

[0079] Specifically, a liquid crystal display screen can be used as a display interface of the device to display the working status of each communication module and the module, and can also be used to input configuration parameters of the device, etc.

[0080] The railway individual emergency communication equipment provided by the present invention can integrate multiple public mobile communication networks and railway 5G-R networks to achieve seamless interoperability between networks, and the reliability and flexibility of emergency communications can be enhanced through the integrated communication design of different networks, ensuring the establishment of a stable and efficient wireless communication link between the emergency site and the emergency rescue command center. As long as one of the networks can provide services normally, it can ensure that the railway individual emergency communication equipment continuously transmits key information, including real-time video, audio, positioning data, and emergency instructions, etc., providing all-round and multi-dimensional information support for emergency rescue.

[0081] For ease of understanding, the following will be combined with the accompanying drawings based on the above Figure 1 The specific application process of the railway individual emergency communication equipment shown in the figure at the emergency rescue site is described in detail.

[0082] The above-mentioned railway individual emergency communication equipment can realize a multi-network integrated communication mode. In this communication mode, the railway individual emergency communication equipment can support two communication modes: link switching and load balancing strategy, where:

[0083] The link switching mode means that when the quality of the current communication link is detected to be degraded or interrupted, the current communication link is switched to other wireless communication networks that can ensure the quality of the communication link according to the performance parameters of each wireless communication network obtained by monitoring; that is, the device is allowed to automatically and quickly switch to other links when the quality of the current communication link is detected to be degraded or interrupted, so as to ensure the continuity and uninterruptedness of communication;

[0084] The load balancing strategy mode may refer to allocating communication tasks to different wireless communication networks with service capabilities in an intelligent manner based on a predetermined load balancing strategy; the load balancing strategy refers to automatically evaluating the performance parameters of each wireless communication network or channel when multiple wireless communication networks have the ability to provide services, and allocating communication tasks to the best one or more wireless communication networks based on the evaluation results, wherein the performance parameters of the wireless communication network or channel include at least its bandwidth and delay; that is, by intelligently allocating the communication load of different networks, optimizing resource utilization, reducing the pressure on a single link, and improving the overall communication efficiency, when multiple networks can provide services, the load balancing strategy can automatically evaluate the bandwidth, delay and other performance parameters of each network or channel, and reasonably allocate communication tasks to the optimal path, thereby ensuring the fast and accurate transmission of communication data.

[0085] In the corresponding multi-network integration implementation process, the railway individual emergency communication equipment can use the virtual router technology to realize multi-network integration. The virtual router can run in the corresponding central controller. Figure 2 As shown in FIG. 1 , specific implementation methods of multi-network integration include:

[0086] Different network namespaces are divided in the central controller, and different networks are divided into different spaces. Each space has its own independent network configuration. For example, the 5G-R network interface is assigned to network namespace 1, public mobile communication networks 1 to 3 are assigned to network namespaces 2 to 4, and the emergency site network can be assigned to the main network command space. Each network namespace is connected to a virtual router, which forwards data between network namespaces according to the routes published by the policy routing controller.

[0087] The routing control method implemented by the corresponding policy routing controller may include generating different routing strategies according to the working status of each network and the characteristics of the application business and sending them to the virtual router, thereby controlling the data forwarding method between the emergency site and the emergency rescue command center.

[0088] Specifically, the central controller may monitor the link status of the public mobile communication network and the railway 5G-R network, that is, the central controller monitors the performance parameters of each wireless communication network. The monitored performance parameters may include:

[0089] Whether each module is logged into the network;

[0090] Whether each module is accessible to the emergency rescue command center;

[0091] The round-trip delay between each module and the emergency rescue command center detected by the Ping command;

[0092] TCP connection health indicators, which may include packet loss rate, retransmission rate, congestion window size, etc.

[0093] When a link cannot log in to the corresponding wireless network, is unreachable to the emergency rescue command center, the round-trip delay is greater than the set threshold, or the TCP connection health index is lower than the set threshold, the railway individual emergency communication equipment will mark the link corresponding to the module as "unavailable", otherwise, it can be marked as "available".

[0094] Based on the above-mentioned monitored performance parameters, the routes issued by the policy routing controller are generated according to the working status of each wireless communication network and the characteristics of the application service. The corresponding link switching and load balancing policy mode routing control implementation process may include:

[0095] When the device works in link switching mode, only one network namespace is in data forwarding state at the same time; referring to the previous example, only one network namespace 1 to 4 is in data forwarding state at the same time; and initially, the device selects the available link with the smallest round-trip delay as the working link; when the working link is unavailable, the device will reselect the available non-working link with the smallest round-trip delay as the working link, and then the policy routing controller will generate a routing configuration instruction, notify the virtual router to update the routing configuration, and put the network namespace where the working link is located into the data forwarding state;

[0096] When the equipment works in load balancing, the network command space where all available links are located is in a data forwarding state. The policy routing controller configures a routing policy for each TCP / UDP connection based on the four-tuple consisting of <source IP address, source port number, destination IP address, destination port number> and sends it to the virtual router; therefore, the corresponding railway individual emergency communication equipment can dynamically adjust the routing strategy according to changes in communication resources, communication environment and application services, maintain the communication link to the maximum extent, and ensure the reliable carrying of key services such as voice and text.

[0097] In the above-mentioned railway individual emergency communication equipment, the specific implementation method of the corresponding self-organizing network solution is as follows: Figure 3As shown, it can be realized specifically through the self-organizing network module configured by the railway individual emergency communication equipment. Specifically, when multiple railway individual emergency communication equipment are deployed at the emergency rescue site, each railway individual emergency communication equipment can realize autonomous networking and quickly build a flexible and robust communication network; refer to Figure 3 As shown, the network obtained by the corresponding self-organizing network does not need to rely on fixed infrastructure, but automatically discovers, authenticates and establishes multi-hop transmission paths through wireless connections between devices. Each railway individual emergency communication device in the self-organizing network is both a terminal and a router, which can intelligently select the optimal path to transmit various types of information such as voice, video, and data.

[0098] Furthermore, the railway individual emergency communication device can also be configured with a corresponding hand microphone (handheld microphone) through the built-in voice codec, so that rescue personnel can also directly use the railway individual emergency communication device through the hand microphone to realize the intercom communication function.

[0099] In the above-mentioned railway individual emergency communication equipment, in the implementation process of sending the corresponding Beidou short message, in view of the urgency of the emergency rescue scene and the complexity of the environment, if the implementation method of manually editing and sending short messages is adopted, it is often limited by time pressure, cumbersome operation and potential information input errors, which may delay the rescue time or reduce the accuracy of information transmission; in order to overcome this limitation, a preset short message content library mechanism is introduced in the railway individual emergency communication equipment provided by the present invention, that is, a series of standardized short message templates for common emergency situations are pre-defined, such as "request for immediate reinforcement", "locate the trapped person", etc.; refer to Figure 4 As shown, when the on-site rescue personnel need to send a short message, the process that can be used includes:

[0100] On-site rescue personnel can select a short message template through the LCD screen according to the actual situation on site, that is, quickly select the corresponding short message template from the short message list in the preset short message template library;

[0101] Also obtain the current longitude and latitude and timestamp information from the Beidou module, and attach the current longitude and latitude and timestamp information to the short message template;

[0102] Afterwards, the one-click sending function is used to send short messages to the Beidou module, so as to utilize the Beidou short message service to achieve instant and accurate message sending.

[0103] The above-mentioned method of implementing information transmission through Beidou short messages not only significantly improves the timeliness of emergency response, but also reduces ambiguity and misunderstanding in information transmission through the application of standardized short message templates, enhances the standardization and consistency of communication content, and further improves the efficiency and effectiveness of the overall emergency rescue work.

[0104] In summary, the implementation scheme of the above-mentioned railway individual emergency communication equipment provided by the present invention can specifically produce the following significant technical effects:

[0105] (1) A backpack-type railway individual emergency communication device was designed. The device integrates multiple functions such as public mobile communications, railway 5G-R private network, Beidou positioning and short messages, ad hoc network, Wi-Fi, audio and video acquisition and transmission, and is suitable for emergency rescue communications in complex natural environments;

[0106] (2) In this railway individual emergency communication device, a multi-network integration communication mode is also proposed, that is, three public mobile communication operator networks and the railway 5G-R private network can be seamlessly integrated into a reliable and interoperable emergency communication network in one device, and can support multiple application scenarios such as link switching and load balancing strategies to maximize the connectivity of the emergency communication network;

[0107] (3) Self-organizing network communication capabilities are also integrated into the railway individual emergency communication equipment, so that multiple railway individual emergency communication equipment can be interconnected in a self-organizing manner without the need for any infrastructure or central nodes to achieve collaborative rescue, thereby meeting the rescue communication needs in complex scenarios.

[0108] Therefore, the railway individual emergency communication equipment provided by the present invention can effectively solve the problems existing in the prior art, and provide a highly integrated, miniaturized, and flexible emergency communication equipment.

[0109] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims. The information disclosed in the background technology section of this article is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. A railway individual emergency communication device, characterized in that: It includes public network module, railway-specific communication module, Beidou module, ad hoc network module and central controller, among which: The public network module includes a plurality of public communication network corresponding public network modules, which are used to establish connection communication with the corresponding plurality of public wireless communication networks; The railway dedicated communication module is used to establish a connection communication with the railway dedicated network; the public wireless communication network and the railway dedicated network are collectively referred to as a wireless communication network; The Beidou module is used to transmit short messages according to preset short message information and realize positioning processing; A self-organizing network module is used to establish a local communication network for direct communication between the railway individual emergency communication devices through a wireless network, so as to carry out direct communication between the railway individual emergency communication devices; The central controller includes a virtual router, and the virtual router is used to realize the integrated communication of the multiple wireless communication networks; the integrated communication of the multiple wireless communication networks includes: monitoring the performance parameters of the corresponding public wireless communication network and each wireless communication network of the railway dedicated network through the public network module and the railway dedicated communication module, and controlling the public network module and the railway dedicated communication module to select one or more communication networks according to predetermined rules to establish connection communication according to the monitoring results, so as to control the transmission service of communication information in emergency scenarios through the established connection, and the predetermined rules include link switching mode and / or load balancing strategy mode; Different network namespaces are divided in the central controller, and different wireless communication networks are divided into different network namespaces, each network namespace includes an independent network configuration, each network namespace is connected to the virtual router, and the virtual router forwards data between the network namespaces according to the routes issued by the policy routing controller connected to it; In addition, the central controller also controls the Beidou module to transmit the selected short message according to the preset short message and obtain the corresponding positioning information, and controls the self-organizing network module and other railway individual emergency communication equipment to form a local communication network.

2. The communication device according to claim 1, characterized in that The communication device also includes: A voice codec is used to connect with a handheld microphone to obtain input voice information; and it is also connected to the self-organizing network module to transmit the voice information, and / or the voice codec is scheduled and sent by the central controller.

3. The communication device according to claim 1, characterized in that The communication device also includes: The Wi-Fi module is used to provide wireless LAN connection function, enabling the terminal device to connect to the railway individual emergency communication equipment through the Wi-Fi communication mode it provides, and access the on-site emergency communication network.

4. The communication device according to claim 1, characterized in that The communication device also includes: The switching module is used to establish interconnection between the self-organizing network module, the Wi-Fi module and the central controller to realize data exchange and sharing between them.

5. The communication device according to claim 1, characterized in that The communication device also includes: A display screen is used to display the working status of each module included in the communication device and to input the configuration parameters of the communication device through it; and also includes displaying preset short message information and selecting the short message that the Beidou module needs to send according to the obtained operation instruction information.

6. The communication device according to any one of claims 1 to 5, characterized in that: The process of the central controller monitoring the performance parameters of each wireless communication network includes: Monitor whether each module has logged into the corresponding wireless communication network, whether it is reachable with the emergency rescue command center, the round-trip delay detected by the Ping command with the emergency rescue command center, and TCP connection health indicators, wherein the TCP connection health indicators include packet loss rate, retransmission rate, and congestion window size; and, When a module's link cannot log in to the corresponding wireless network, is unreachable to the emergency rescue command center, the round-trip delay is greater than the set threshold, or the TCP connection health index is lower than the set threshold, the link corresponding to the module is marked as "unavailable", otherwise it is marked as "available".

7. The communication device according to claim 6, characterized in that In the central controller, the link switching mode and / or load balancing strategy mode includes: The link switching mode means that when it is detected that the quality of the current communication link is degraded or interrupted, the current communication link is switched to another wireless communication network that can ensure the quality of the communication link according to the performance parameters of each wireless communication network obtained by monitoring; The load balancing strategy mode refers to allocating communication tasks to different wireless communication networks with service capabilities based on a predetermined load balancing strategy in an intelligent manner; the load balancing strategy refers to automatically evaluating the performance parameters of each wireless communication network or channel when multiple wireless communication networks have the ability to provide services, and allocating communication tasks to the optimal one or more wireless communication networks based on the evaluation results, wherein the performance parameters of the wireless communication network or channel include at least its bandwidth and delay.

8. The communication device according to claim 6, characterized in that: The routes issued by the policy routing controller are generated according to the working status of each wireless communication network and the characteristics of the application service, and include: When working in link switching mode, only one network namespace is in data forwarding state at the same time; and initially, the available link with the smallest round-trip delay is selected as the working link; when the working link is unavailable, the available non-working link with the smallest round-trip delay is reselected as the working link, and then the policy routing controller generates a routing configuration instruction to notify the virtual router to update the routing configuration and put the network namespace where the working link is located into the data forwarding state; and / or, When working in load balancing policy mode, the network command space where all available links are located is in data forwarding state, and the policy routing controller configures a routing policy for each TCP / UDP connection based on the four-tuple consisting of source IP address, source port number, destination IP address and destination port number, and sends it to the virtual router.

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