An emergency communication method and system based on a Beidou satellite navigation system

Abstract

This invention discloses an emergency communication method and system based on the BeiDou Navigation Satellite System, comprising: an emergency information receiving module receiving emergency notification information sent from different channels through multiple interfaces, and adding a field indicating the information source to the received emergency notification information message; an emergency information processing module processing the emergency notification information received by the emergency information receiving module, determining the urgency level of the information based on the information source and information content, and sending the processed emergency notification information to the BeiDou Navigation Satellite System; the BeiDou Navigation Satellite System broadcasting the emergency notification information; and a terminal device receiving the emergency notification information sent by the BeiDou Navigation Satellite System and processing the received information according to the instructions in the information content. This invention effectively solves the problem in existing technologies where the lack of mobile communication signals in emergency situations prevents the timely acquisition of emergency notification information.

Description

Technical Field

[0001] This invention relates to the field of satellite communication technology, and in particular to an emergency communication method and system based on the BeiDou satellite navigation system. Background Technology

[0002] In the event of an impending earthquake, sudden severe weather, air raids, or counter-terrorism emergencies, the local area may experience mobile communication outages, power outages, or lack of mobile communication coverage. As a result, the local population may not be able to obtain emergency notification information in a short period of time, and the best time for self-rescue may be missed, potentially leading to more loss of life and property. Summary of the Invention

[0003] This invention provides an emergency communication method and system based on the BeiDou satellite navigation system, which can effectively solve the problem that existing technologies cannot obtain emergency notification information in a short time when there is no mobile communication signal in an emergency.

[0004] An embodiment of the present invention provides an emergency communication method based on the BeiDou satellite navigation system, comprising:

[0005] The emergency information receiving module receives emergency notification information sent from different channels through multiple interfaces and adds the information source field to the received emergency notification information message;

[0006] The emergency information processing module processes the emergency notification information received by the emergency information receiving module, determines the urgency level of the information based on the information source and content, and sends the processed emergency notification information to the BeiDou satellite navigation system.

[0007] The BeiDou satellite navigation system broadcast the emergency notification information;

[0008] The terminal device receives emergency notification information sent by the BeiDou satellite navigation system and processes the received information according to the instructions in the information content.

[0009] In some embodiments, the emergency information receiving module further performs the following steps:

[0010] Extract the information security level parameters from the emergency notification information;

[0011] When the information security level parameter of the emergency notification information to be sent is higher than the preset first threshold, it is determined whether the information security level parameter of the emergency notification information currently being sent is lower than the information security level parameter of the emergency notification information to be sent. If so, the current information transmission is interrupted and the emergency notification information to be sent is immediately sent to the emergency information processing module.

[0012] In some embodiments, the emergency information processing module controls the emergency notification information to be sent to the BeiDou satellite navigation system through the following steps:

[0013] Extract the emergency level parameter from the emergency notification information in the queue to be sent;

[0014] The priority information of the emergency notification information is determined based on the magnitude of the emergency level parameter.

[0015] The emergency notification information in the queue to be sent is sorted from high to low priority, and then the emergency notification information is sent to the BeiDou satellite navigation system according to the sorted queue.

[0016] In some embodiments, the emergency notification information is carried on the navigation and positioning signals of the BeiDou satellite navigation system;

[0017] The BeiDou Navigation Satellite System broadcasts navigation and positioning signals to transmit the emergency notification information.

[0018] In some embodiments, the emergency notification message includes a message number, message length, message start symbol, message content, message end symbol, and next message number.

[0019] In some embodiments, the terminal device further performs the following processing steps, including:

[0020] When the emergency notification information is received, each of the corresponding preset number of characters is verified using its own verification symbol. The information content of the emergency notification information includes the verification symbol and verification segment number of each preset number of characters.

[0021] If the preset number of characters fail the verification, the field containing the character is determined based on the verification segment number of the preset number of characters, so that the field is verified after the emergency notification information is received again, until all characters of the information content are identified.

[0022] In some embodiments, the terminal device further performs the following processing steps, including:

[0023] When the information content is detected to be incomplete, or the emergency notification information is decoded incorrectly, the missing field or the field that is decoded incorrectly is taken as the field to be identified, so that the field to be identified is verified after the emergency notification information is received next time.

[0024] In some embodiments, the emergency information processing module further performs the following steps:

[0025] Extract the emergency level parameter from the emergency notification information;

[0026] When the emergency level parameter of the emergency notification information is greater than the preset emergency threshold, the information content of the emergency notification information is encoded into an information code.

[0027] In some embodiments, the method further includes:

[0028] When the urgency level of the emergency notification information is greater than the urgency threshold, the emergency information receiving module generates a corresponding identification signal and injects the emergency notification information and its identification signal into the BeiDou satellite navigation system.

[0029] The BeiDou satellite navigation system broadcasts the emergency notification information and corresponding identification signals;

[0030] When the terminal device receives the identification signal, it generates an information receiving instruction and, in response to the information receiving instruction, receives the emergency notification information sent by the BeiDou satellite navigation system.

[0031] In some embodiments, the information content further includes an identity information database, and the terminal device further performs the following processing steps, including:

[0032] Extract the information security level parameters from the emergency notification information;

[0033] When the information security level parameter is higher than the first threshold, the user's identity authentication information is collected and matched with the identity information database;

[0034] If a match is successful, the user's identity is verified, and a decoding command is generated;

[0035] In response to the decoding instruction, the emergency notification information is decoded.

[0036] In some embodiments, the terminal device further performs the following processing steps, including:

[0037] Extract the emergency level parameter from the emergency notification information;

[0038] Determine whether the emergency level parameter of the emergency notification information is greater than the emergency threshold; if so, issue an audible alert to the user and display the emergency notification information simultaneously; otherwise, display the emergency notification information to alert the user.

[0039] One embodiment of the present invention provides an emergency communication system based on the BeiDou satellite navigation system, comprising: the BeiDou satellite navigation system, terminal equipment and an emergency command system, wherein the emergency command system includes an emergency information receiving module and an emergency information processing module;

[0040] The emergency information receiving module has multiple interfaces for receiving emergency notification information sent from different channels and adding the information source field to the received emergency notification information message.

[0041] The emergency information processing module is used to process the emergency notification information received by the emergency information receiving module, determine the urgency level of the information according to the information source and information content, and send the processed emergency notification information to the Beidou satellite navigation system.

[0042] The BeiDou satellite navigation system is used to broadcast the emergency notification information;

[0043] The terminal device is used to receive emergency notification information sent by the BeiDou satellite navigation system and process the received information according to the instructions in the information content.

[0044] In some embodiments, the emergency information receiving module includes:

[0045] The security classification parameter extraction unit is used to extract the security classification parameters from the emergency notification information;

[0046] The information priority sending unit is used to determine whether the information security level parameter of the emergency notification information currently being sent is lower than that of the emergency notification information to be sent when the information security level parameter of the emergency notification information to be sent is higher than a preset first threshold. If so, the current information transmission is interrupted and the emergency notification information to be sent is immediately sent to the emergency information processing module.

[0047] In some embodiments, the emergency information processing module includes:

[0048] The first emergency level parameter extraction unit is used to extract the emergency level parameters of emergency notification information in the queue to be sent.

[0049] The information priority determination unit is used to determine the priority information of the emergency notification information based on the magnitude of the emergency level parameter of the emergency notification information.

[0050] The sending sorting unit is used to sort the information in the queue to be sent according to the priority information of the emergency notification information, so as to send the emergency notification information to the Beidou satellite navigation system according to the sorted queue to be sent.

[0051] In some embodiments, the terminal device includes;

[0052] The second emergency level parameter extraction unit is used to extract the emergency level parameters of the emergency notification information.

[0053] The notification unit is used to determine whether the emergency level parameter of the emergency notification information is greater than the emergency threshold; if so, it emits an sound to remind the user and displays the emergency notification information at the same time; otherwise, it displays the emergency notification information to remind the user.

[0054] Compared to existing technologies, this invention discloses an emergency communication method and system based on the BeiDou Navigation Satellite System. An emergency information receiving module receives emergency notification information from different channels and adds a source field to the received notification message. An emergency information processing module then processes the received notification information, determines its urgency level based on the source and content, and sends the processed notification information to the BeiDou Navigation Satellite System. The BeiDou Navigation Satellite System then broadcasts the notification information. Terminal devices receive the notification information from the BeiDou Navigation Satellite System and process it according to the content. This emergency communication method using the BeiDou Navigation Satellite System effectively solves the problem of insufficient mobile communication signals in emergency situations, preventing the rapid acquisition of emergency notification information. The system has wide coverage, ensuring timely notification of people in affected areas and significantly reducing loss of life and property. Furthermore, it eliminates the need for additional BeiDou terminals or other basic technical equipment, allowing for reception of emergency notification information via widely available mobile terminals, thus broadening its applicability.

[0055] The above embodiments prioritize sending emergency notification information whose information security level parameters exceed a first threshold through the emergency information receiving module, which facilitates the timely receipt of high-security emergency notification information by terminal devices and effectively improves communication efficiency.

[0056] The above embodiments determine the priority of sending information according to the urgency level of emergency notification information through the emergency information processing module, so as to prioritize the sending of emergency notification information with higher urgency level. This enables the BeiDou satellite navigation system to prioritize the broadcast of emergency notification information with higher urgency level, thereby improving the timeliness of emergency notifications and improving information transmission efficiency.

[0057] The above embodiments use navigation and positioning signals from the BeiDou satellite navigation system to broadcast emergency notification information, thereby avoiding the problems of limited system capacity and inability to support widespread public use in existing technologies using BeiDou short message RDSS communication. This embodiment receives the emergency notification information through commonly configured mobile terminals, which has a wide range of applications and rich fields in the navigation and positioning signals.

[0058] In the above embodiments, the emergency notification information message includes an information number, information length, information start symbol, information content, information end symbol, and next information number, so as to determine whether the emergency notification information has been sent based on the emergency notification information message, which can effectively improve the reliability of the information content.

[0059] The above embodiment performs a verification every preset number of characters. When the verification fails, only the fields that failed the verification need to be verified in the next operation. This eliminates the need to re-receive all information and repeat the verification of fields that passed multiple times, which can effectively improve the verification efficiency and prevent interference from other signals, thus ensuring the accuracy of the information content.

[0060] The above embodiments effectively improve the efficiency of information processing by allowing the terminal device to verify and receive the missing or incorrectly decoded fields in the next operation when the received information is incomplete or decoded incorrectly.

[0061] The above embodiments effectively improve information transmission efficiency by using information codes to replace information content when the emergency notification information is determined to be at an emergency level greater than an emergency threshold.

[0062] The above embodiment generates a corresponding identification signal when the urgency level of the emergency notification information is greater than the urgency threshold. This enables the terminal device to be forced to receive the emergency notification information upon receiving the identification signal. This effectively avoids forcing the terminal device to receive information when its receiving function is not enabled, ensuring that the user receives emergency notification information with a higher urgency level.

[0063] The above embodiments ensure information security by requiring identity authentication before decoding high-security emergency notification information.

[0064] The above embodiments improve the efficiency of emergency notifications by using both sound and text reminders for emergency notifications with higher urgency levels, while using only text reminders for emergency notifications with lower urgency levels. Attached Figure Description

[0065] Figure 1 This is a flowchart illustrating an emergency communication method based on the BeiDou satellite navigation system according to an embodiment of the present invention.

[0066] Figure 2 This is a schematic diagram of the structure of a B1C B-CNAV1 message provided in an embodiment of the present invention;

[0067] Figure 3 This is a schematic diagram of the structure of subframe 3 of the B1C signal provided in an embodiment of the present invention;

[0068] Figure 4This is a schematic diagram of the structure of an emergency communication system based on the BeiDou satellite navigation system provided in an embodiment of the present invention. Detailed Implementation

[0069] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0070] See Figure 1 This is a flowchart illustrating an emergency communication method based on the BeiDou satellite navigation system provided in an embodiment of the present invention. The method includes steps S101 to S104.

[0071] S101 The emergency information receiving module receives emergency notification information sent from different channels through multiple interfaces and adds the information source field to the received emergency notification information message.

[0072] In this embodiment, the emergency information receiving module has multiple interfaces, which can be used to receive emergency notifications issued by different government departments or agencies, such as the Earthquake Administration and the Meteorological Administration. Furthermore, the emergency information receiving module adds a field indicating the information source to the message. For example, when the emergency information receiving module receives an emergency notification message on port 1, it adds a field to the message header indicating that the information comes from port 1, thus distinguishing the information source.

[0073] S102. The emergency information processing module processes the emergency notification information received by the emergency information receiving module, determines the urgency level of the information based on the information source and content, and sends the processed emergency notification information to the BeiDou satellite navigation system.

[0074] It should be noted that the emergency information processing module is a device with data processing capabilities. For example, determining the urgency level of information based on its source and content can be achieved through the following steps: When the information source is an interface used to receive and publish emergency notification information about an emergency event, referring to the "National General Emergency Response Plan for Public Emergencies," various public emergencies are generally classified into four levels according to their nature, severity, controllability, and scope of impact: Level I (Extremely Serious), Level II (Serious), Level III (Relatively Serious), and Level IV (General). The urgency level of the information is then determined based on its content. Furthermore, the emergency notification information is processed, and its urgency level is used to identify the information, resulting in a processed emergency notification information.

[0075] S103. The BeiDou satellite navigation system broadcasts the emergency notification information.

[0076] In some embodiments, the emergency notification information is carried on the navigation and positioning signals of the BeiDou satellite navigation system;

[0077] The BeiDou Navigation Satellite System broadcasts navigation and positioning signals to transmit the emergency notification information.

[0078] In this embodiment, emergency notification information is broadcast by using the navigation and positioning signals of the BeiDou satellite navigation system, thereby avoiding the problems of limited system capacity and inability to support widespread public use in the existing BeiDou short message RDSS communication. This embodiment receives the emergency notification information through commonly configured mobile terminals, which has a wide range of applications and the navigation and positioning signals have rich fields.

[0079] For example, this emergency notification information may be carried on a B1C signal, but is not limited to this. See also Figure 2 This is a schematic diagram of the structure of a B1C B-CNAV1 message provided in an embodiment of the present invention. It broadcasts 1800 symbols in a main frame (containing 3 subframes) every 18 seconds, corresponding to 878 bits of the original symbol before error correction coding. According to... Figure 2 Frame format: Reserved fields that can be broadcast within 18 seconds (878 bits): at least 7 bits (in subframe 2); Reserved fields that can be broadcast within 18 seconds (878 bits): up to 241 (=7+234) bits. Based on this, it is estimated that about 100 bytes, or 50 Chinese characters, can be broadcast per minute. This data volume is similar to the RDSS data of Beidou-2. If it is a pure text information broadcast, the data throughput can be indirectly increased by using appropriate source data compression technology; Reserved fields that can be broadcast within 18 seconds (878 bits): also include 34=7+27, 37=7+30, 21=7+14, 54=7+47 bits, etc. Therefore, since the B1C signal is an internationally recognized, globally covered civilian frequency, it does not require declaration even overseas, and the B1C signal has a relatively rich reserve field.

[0080] For more details, see Figure 3This is a schematic diagram of subframe 3 of a B1C signal provided in an embodiment of the present invention. The present invention fully utilizes the unallocated PageIDs in subframe 3 to broadcast emergency notification information. Specifically, the information length of subframe 3 is 264 bits, with the highest 6 bits being the page type (PageID), the last 24 bits being the cyclic redundancy check bit, and the remaining 234 bits being the message data. PageID = 0 in subframe 3 is defined as an invalid page; therefore, a maximum of 63 page types can be used. The "BeiDou Satellite Navigation System Space Signal Interface Control Document B1C" already specifies PageIDs 1, 2, 3, and 4, and message data with PageIDs 5-63 are used to broadcast emergency notification information.

[0081] S104. The terminal device receives the emergency notification information sent by the BeiDou satellite navigation system and processes the received information according to the instructions in the information content.

[0082] This invention discloses an emergency communication method based on the BeiDou Navigation Satellite System. An emergency information receiving module receives emergency notification information from different channels and adds a source field to the received notification message. An emergency information processing module then processes the received notification information, determines its urgency level based on the source and content, and sends the processed notification information to the BeiDou Navigation Satellite System. The BeiDou Navigation Satellite System then broadcasts the notification information. Terminal devices receive the notification information from the BeiDou Navigation Satellite System and process it according to the content. This emergency communication method using the BeiDou Navigation Satellite System effectively solves the problem of insufficient mobile communication signal coverage in emergency situations, preventing the rapid acquisition of emergency notification information. The system has wide coverage, ensuring timely notification of people in affected areas and significantly reducing loss of life and property. Furthermore, it eliminates the need for additional BeiDou terminals or other basic technical equipment, allowing for reception via widely available mobile terminals, thus broad applicability.

[0083] In some embodiments, the emergency information receiving module further performs the following steps;

[0084] Extract the information security level parameters from the emergency notification information;

[0085] When the information security level parameter of the emergency notification information to be sent is higher than the preset first threshold, it is determined whether the information security level parameter of the emergency notification information currently being sent is lower than the information security level parameter of the emergency notification information to be sent. If so, the current information transmission is interrupted and the emergency notification information to be sent is immediately sent to the emergency information processing module.

[0086] In this embodiment, the information security level is a grade that identifies the degree of secrecy of information, and the information security level parameter field is stored in the emergency notification information message. When multiple messages are waiting to be sent in the emergency information receiving module, if the information security level parameter of the emergency notification information to be sent is higher than a first threshold, the information can be considered high-security information and should be sent first. Therefore, when the information security level parameter of the currently being sent emergency notification information is lower than that of the emergency notification information to be sent, the sending of the current information is interrupted, and the information with a higher security level is sent first. In addition, for example, when the information security level parameter of the currently being sent emergency notification information is not lower than that of the emergency notification information to be sent, the sending of the current information is not interrupted, and the information can be added to the waiting sequence in the emergency information receiving module. This sequence is ordered according to the order of time or the size of the information security level, and the emergency notification information is sent to the emergency information processing module according to this sequence. The size of the information security level parameter is determined again when sending information next time. When the information security level parameter of the emergency notification information to be sent is not higher than the preset first threshold, the information is added to the waiting sequence and awaits sending. Therefore, by prioritizing the transmission of emergency notification information whose information security level parameters exceed the first threshold through the emergency information receiving module, terminal devices can receive high-security emergency notification information in a timely manner, which can effectively improve communication efficiency.

[0087] In some embodiments, the emergency information processing module controls the emergency notification information to be sent to the BeiDou satellite navigation system through the following steps:

[0088] Extract the emergency level parameter from the emergency notification information in the queue to be sent;

[0089] The priority information of the emergency notification information is determined based on the magnitude of the emergency level parameter.

[0090] The emergency notification information in the queue to be sent is sorted from high to low priority, and then the emergency notification information is sent to the BeiDou satellite navigation system according to the sorted queue.

[0091] In this embodiment, when multiple messages are waiting to be sent in the emergency information processing module, the module determines the priority of sending the messages according to their urgency level. The higher the urgency level, the higher the priority. This allows the BeiDou Navigation Satellite System to prioritize the broadcast of emergency notifications with higher urgency levels, thereby improving the timeliness of emergency notifications and increasing information transmission efficiency.

[0092] In some embodiments, the emergency notification message includes a message number, message length, message start symbol, message content, message end symbol, and next message number.

[0093] In this embodiment, the information length is the length of the characters contained in the information, the information start symbol indicates the start of the information, and the information end symbol indicates the end of the information. The information structure is shown in Table 1 below.

[0094] Information Number Information length Information start symbol Information content End of message symbol Next information number

[0095] Table 1

[0096] Therefore, determining whether an emergency notification has been completely sent based on this emergency notification message can effectively improve the reliability of the information content. The information content is marked with an urgency level, and includes the text content, security classification, etc., which are not limited here.

[0097] Based on the above embodiments, in some embodiments, the terminal device further performs the following processing steps, including:

[0098] When the emergency notification information is received, each of the corresponding preset number of characters is verified using its own verification symbol. The information content of the emergency notification information includes the verification symbol and verification segment number of each preset number of characters.

[0099] If the preset number of characters fail the verification, the field containing the character is determined based on the verification segment number of the preset number of characters, so that the field is verified after the emergency notification information is received again, until all characters of the information content are identified.

[0100] In this embodiment, a verification is performed every preset number of characters. When the verification passes, the field containing the preset number of characters can be identified through the verification segment number. When the verification fails, only the field that failed the verification needs to be verified in the next operation. This eliminates the need to re-receive all information and avoids repeated verification of the fields that passed the verification, effectively improving verification efficiency and preventing interference from other signals, thus ensuring the accuracy of the information content.

[0101] For example, a check is performed every five characters. If the check fails, the field containing the character is determined by the check segment number, and these five characters only need to be checked again on the next received message. The specific information content of the emergency notification message is shown in Table 2 below.

[0102]

[0103] Table 2

[0104] In some embodiments, the terminal device further performs the following processing steps, including:

[0105] When the information content is detected to be incomplete, or the emergency notification information is decoded incorrectly, the missing field or the field that is decoded incorrectly is taken as the field to be identified, so that the field to be identified is verified after the emergency notification information is received next time.

[0106] The above embodiments effectively improve the efficiency of information processing by allowing the terminal device to verify and receive the missing or incorrectly decoded fields in the next operation when the received information is incomplete or decoded incorrectly.

[0107] In some embodiments, the emergency information processing module further performs the following steps:

[0108] Extract the emergency level parameter from the emergency notification information;

[0109] When the emergency level parameter of the emergency notification information is greater than the preset emergency threshold, the information content of the emergency notification information is encoded into an information code.

[0110] For example, referring to the provisions of the "National Emergency Response Plan for Public Emergencies," the emergency threshold in this embodiment can be set to the level parameter threshold corresponding to Level II (Major), without limitation. This embodiment, by processing the length of information content in high-urgency information, uses information codes to replace the information content when the emergency notification information is determined to be of a high urgency level, effectively reducing information volume and improving information transmission efficiency.

[0111] In some embodiments, the method further includes:

[0112] When the urgency level of the emergency notification information is greater than the urgency threshold, the emergency information receiving module generates a corresponding identification signal and injects the emergency notification information and its identification signal into the BeiDou satellite navigation system.

[0113] The BeiDou satellite navigation system broadcasts the emergency notification information and corresponding identification signals;

[0114] When the terminal device receives the identification signal, it generates an information receiving instruction and, in response to the information receiving instruction, receives the emergency notification information sent by the BeiDou satellite navigation system.

[0115] In this embodiment, by instructing the receiving operation of high-urgency information within the information content, when the urgency level parameter of the emergency notification information exceeds the urgency threshold, a corresponding identification signal is generated. This forces the terminal device to receive the emergency notification information upon receiving the identification signal, effectively preventing forced reception of information when the terminal device's receiving function is not enabled, and ensuring that the user receives emergency notification information with a high urgency level. For example, once the identification signal is received, the terminal device's background software can forcibly enable the emergency notification information receiving function even if the terminal device's receiving function is not enabled. More specifically, the user cannot or is unable to disable the emergency notification information receiving function.

[0116] In some embodiments, the information content further includes an identity information database, and the terminal device further performs the following processing steps, including:

[0117] Extract the information security level parameters from the emergency notification information;

[0118] When the information security level parameter is higher than the first threshold, the user's identity authentication information is collected and matched with the identity information database;

[0119] If a match is successful, the user's identity is verified, and a decoding command is generated;

[0120] In response to the decoding instruction, the emergency notification information is decoded.

[0121] This embodiment ensures information security by specifying the receiving operation for highly urgent information within the information content. Upon receiving a high-secret emergency notification, the information can only be decoded after identity authentication. Identity authentication can be facial recognition or motion recognition, but is not limited to these.

[0122] Based on the above embodiments, in some embodiments, the terminal device further performs the following processing steps, including:

[0123] Extract the emergency level parameter from the emergency notification information;

[0124] Determine whether the emergency level parameter of the emergency notification information is greater than the emergency threshold; if so, issue an audible alert to the user and display the emergency notification information simultaneously; otherwise, display the emergency notification information to alert the user.

[0125] This embodiment improves alert efficiency by using sound and text reminders for emergency notifications with higher urgency levels and only text reminders for emergency notifications with lower urgency levels, based on instructions for receiving high-urgency information within the information content.

[0126] See Figure 4This is a schematic diagram of an emergency communication system based on the BeiDou satellite navigation system provided in an embodiment of the present invention. The system 20 includes: a BeiDou satellite navigation system 220, a terminal device 230 and an emergency command system 210. The emergency command system 210 includes an emergency information receiving module 211 and an emergency information processing module 212.

[0127] The emergency information receiving module 211 has multiple interfaces for receiving emergency notification information sent from different channels and adding the information source field to the received emergency notification information message.

[0128] The emergency information processing module 212 is used to process the emergency notification information received by the emergency information receiving module 211, determine the urgency level of the information according to the information source and information content, and send the processed emergency notification information to the Beidou satellite navigation system 220.

[0129] The BeiDou satellite navigation system 220 is used to broadcast the emergency notification information;

[0130] The terminal device 230 is used to receive emergency notification information sent by the Beidou satellite navigation system 220 and process the received information according to the instructions in the information content.

[0131] This invention discloses an emergency communication system based on the BeiDou Navigation Satellite System. An emergency information receiving module receives emergency notification information from different channels and adds a source field to the received notification messages. An emergency information processing module then processes the received notification information, determines its urgency level based on the source and content, and sends the processed notification information to the BeiDou Navigation Satellite System. The BeiDou Navigation Satellite System then broadcasts the notification information. Terminal devices receive the notification information from the BeiDou Navigation Satellite System and process it according to the content. This emergency communication system effectively solves the problem of insufficient mobile communication signals in emergency situations, preventing timely access to emergency notifications. The system has wide coverage, ensuring timely notification of people in affected areas and significantly reducing loss of life and property. Furthermore, it requires no additional BeiDou terminals or other basic technical equipment; the notifications can be received through commonly used mobile terminals, making it widely applicable.

[0132] In some embodiments, the emergency information receiving module includes:

[0133] The security classification parameter extraction unit is used to extract the security classification parameters from the emergency notification information;

[0134] The information priority sending unit is used to determine whether the information security level parameter of the emergency notification information currently being sent is lower than that of the emergency notification information to be sent when the information security level parameter of the emergency notification information to be sent is higher than a preset first threshold. If so, the current information transmission is interrupted and the emergency notification information to be sent is immediately sent to the emergency information processing module.

[0135] This embodiment prioritizes sending emergency notification information whose information security level parameters exceed a first threshold through the emergency information receiving module, which helps terminal devices receive high-security emergency notification information in a timely manner and effectively improves communication efficiency.

[0136] In some embodiments, the emergency information processing module 212 includes:

[0137] The first emergency level parameter extraction unit is used to extract the emergency level parameters of emergency notification information in the queue to be sent.

[0138] The information priority determination unit is used to determine the priority information of the emergency notification information based on the magnitude of the emergency level parameter of the emergency notification information.

[0139] The sending sorting unit is used to sort the information in the queue to be sent according to the priority information of the emergency notification information, so as to send the emergency notification information to the Beidou satellite navigation system according to the sorted queue to be sent.

[0140] In this embodiment, the emergency information processing module 212 determines the priority of sending information according to the urgency level of the emergency notification information, so as to prioritize the sending of emergency notification information with a higher urgency level. This enables the BeiDou satellite navigation system to prioritize the broadcast of emergency notification information with a higher urgency level, thereby improving the timeliness of emergency notifications and improving information transmission efficiency.

[0141] In some embodiments, the terminal device 230 includes;

[0142] The second emergency level parameter extraction unit is used to extract the emergency level parameters of the emergency notification information.

[0143] The notification unit is used to determine whether the emergency level parameter of the emergency notification information is greater than the emergency threshold; if so, it emits an sound to remind the user and displays the emergency notification information at the same time; otherwise, it displays the emergency notification information to remind the user.

[0144] This embodiment improves reminder efficiency by using both sound and text reminders for emergency notifications with higher urgency levels, while using only text reminders for emergency notifications with lower urgency levels.

[0145] In some embodiments, the BeiDou Navigation Satellite System is further configured to broadcast the emergency notification information by broadcasting navigation and positioning signals, wherein the emergency notification information is carried on the navigation and positioning signals of the BeiDou Navigation Satellite System.

[0146] This embodiment uses the navigation and positioning signals of the BeiDou satellite navigation system to broadcast emergency notification information, thereby avoiding the problems of limited system capacity and inability to support widespread public use in the existing BeiDou short message RDSS communication. This embodiment receives the emergency notification information through commonly configured mobile terminals, which has a wide range of applications and the navigation and positioning signals have rich fields.

[0147] In some embodiments, the emergency notification message includes a message number, message length, message start symbol, message content, message end symbol, and next message number.

[0148] In this embodiment, the emergency notification message includes a message number, message length, message start symbol, message content, message end symbol, and next message number, so as to determine whether the emergency notification message has been sent completely based on the emergency notification message, which can effectively improve the reliability of the message content.

[0149] In some embodiments, the terminal device 230 further includes:

[0150] The information verification unit is used to verify a preset number of characters using their respective verification symbols when receiving the emergency notification information. The information content of the emergency notification information includes the verification symbols and verification segment numbers of each preset number of characters.

[0151] The verification failure unit is used to determine the field where the character is located based on the verification segment number of the preset number of characters when the verification fails, so that the field is verified after the emergency notification information is received again until all characters of the information content are identified.

[0152] This embodiment performs a check every preset number of characters. When the check fails, only the fields that failed the check need to be checked in the next operation. This eliminates the need to re-receive all information and repeat the check on fields that passed the check multiple times, which can effectively improve the check efficiency and prevent interference from other signals, thus ensuring the accuracy of the information content.

[0153] In some embodiments, the terminal device 230 further includes:

[0154] The information content error unit is used to, when it is detected that the information content is incomplete or the emergency notification information is decoded incorrectly, take the missing field or the field that is decoded incorrectly as the field to be identified, so that the field to be identified can be verified after the emergency notification information is received again.

[0155] This embodiment improves information processing efficiency by allowing the terminal device to verify and receive the missing or incorrectly decoded fields in the next operation when the received information is incomplete or decoded incorrectly.

[0156] In some embodiments, the emergency information processing module 212 includes:

[0157] An emergency level parameter acquisition unit is used to extract the emergency level parameters of the emergency notification information;

[0158] The information code encoding unit is used to encode the information content of the emergency notification information into an information code when the emergency level parameter of the emergency notification information is greater than a preset emergency threshold.

[0159] This embodiment effectively improves information transmission efficiency by using an information code to replace the information content when the emergency notification information is determined to be of an emergency level greater than the emergency threshold.

[0160] In some embodiments, the emergency information receiving module includes an identification signal generation unit;

[0161] The identification signal generation unit is used to generate a corresponding identification signal when the emergency notification information has an emergency level greater than the emergency threshold, and to inject the emergency notification information and its identification signal into the BeiDou satellite navigation system.

[0162] The BeiDou satellite navigation system is also used to broadcast the emergency notification information and corresponding identification signals;

[0163] The terminal device also includes a forced receiving unit;

[0164] The forced receiving unit is used to generate an information receiving instruction when the terminal device receives the identification signal, and in response to the information receiving instruction, receive emergency notification information sent by the BeiDou satellite navigation system.

[0165] This embodiment generates a corresponding identification signal when the urgency level of the emergency notification information is greater than the urgency threshold. This signal forces the terminal device to receive the emergency notification information upon receiving the identification signal, effectively preventing the terminal device from forcibly receiving information when its receiving function is not enabled, and ensuring that the user receives emergency notification information with a higher urgency level.

[0166] In some embodiments, the terminal device includes:

[0167] Information security level parameter acquisition unit, used to extract information security level parameters from the emergency notification information;

[0168] An identity matching unit is used to collect the user's identity authentication information and match the identity authentication information with the identity information database when the information security level parameter is higher than the first threshold.

[0169] The decoding instruction acquisition unit is used to generate a decoding instruction if the user's identity is authenticated and a match is successful.

[0170] A decoding unit is used to decode the emergency notification information in response to the decoding instruction.

[0171] This embodiment ensures information security by requiring identity authentication before decoding high-security emergency notification information.

[0172] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An emergency communication method based on the BeiDou satellite navigation system, characterized in that, include: The emergency information receiving module receives emergency notification information sent from different channels through multiple interfaces and adds the information source field to the received emergency notification information message; The emergency notification message includes a message number, message length, message start symbol, message content, message end symbol, and next message number; The emergency information processing module processes the emergency notification information received by the emergency information receiving module, determines the urgency level of the information based on the information source and content, and sends the processed emergency notification information to the BeiDou satellite navigation system. The BeiDou Navigation Satellite System broadcasts the emergency notification information; the emergency notification information is carried on the navigation and positioning signals of the BeiDou Navigation Satellite System; the BeiDou Navigation Satellite System broadcasts the emergency notification information by broadcasting the navigation and positioning signals. Specifically, the emergency notification information is carried in the unallocated PageID in subframe 3 of the B1C signal; The terminal device receives emergency notification information sent by the BeiDou satellite navigation system and processes the received information according to the instructions in the information content; The terminal device also performs the following processing steps, including: When the emergency notification information is received, each of the corresponding preset number of characters is verified using its own verification symbol. The information content of the emergency notification information includes the verification symbol and verification segment number of each preset number of characters. If the preset number of characters fail the verification, the field containing the character is determined based on the verification segment number of the preset number of characters, so that the field is verified after the emergency notification information is received again, until all characters of the information content are identified.

2. The emergency communication method based on the BeiDou satellite navigation system as described in claim 1, characterized in that, The emergency information receiving module also performs the following steps: Extract the information security level parameters from the emergency notification information; When the information security level parameter of the emergency notification information to be sent is higher than the preset first threshold, it is determined whether the information security level parameter of the emergency notification information currently being sent is lower than the information security level parameter of the emergency notification information to be sent. If so, the current information transmission is interrupted and the emergency notification information to be sent is immediately sent to the emergency information processing module.

3. The emergency communication method based on the BeiDou satellite navigation system as described in claim 1, characterized in that, The emergency information processing module controls the emergency notification information to be sent to the BeiDou satellite navigation system through the following steps: Extract the emergency level parameter from the emergency notification information in the queue to be sent; The priority information of the emergency notification information is determined based on the magnitude of the emergency level parameter. The emergency notification information in the queue to be sent is sorted from high to low priority, and then the emergency notification information is sent to the BeiDou satellite navigation system according to the sorted queue.

4. The emergency communication method based on the BeiDou satellite navigation system as described in claim 1, characterized in that, The terminal device also performs the following processing steps, including: When the information content is detected to be incomplete, or the emergency notification information is decoded incorrectly, the missing field or the field that is decoded incorrectly is taken as the field to be identified, so that the field to be identified is verified after the emergency notification information is received next time.

5. The emergency communication method based on the BeiDou satellite navigation system as described in claim 3, characterized in that, The emergency information processing module also performs the following steps: Extract the emergency level parameter from the emergency notification information; When the emergency level parameter of the emergency notification information is greater than the preset emergency threshold, the information content of the emergency notification information is encoded into an information code.

6. The emergency communication method based on the BeiDou satellite navigation system as described in claim 5, characterized in that, The method further includes: When the urgency level of the emergency notification information is greater than the urgency threshold, the emergency information receiving module generates a corresponding identification signal and injects the emergency notification information and its identification signal into the BeiDou satellite navigation system. The BeiDou satellite navigation system broadcasts the emergency notification information and corresponding identification signals; When the terminal device receives the identification signal, it generates an information receiving instruction and, in response to the information receiving instruction, receives the emergency notification information sent by the BeiDou satellite navigation system.

7. The emergency communication method based on the BeiDou satellite navigation system as described in claim 2, characterized in that, The information content also includes an identity information database, and the terminal device further performs the following processing steps, including: Extract the information security level parameters from the emergency notification information; When the information security level parameter is higher than the first threshold, the user's identity authentication information is collected and matched with the identity information database; If a match is successful, the user's identity is authenticated, and a decoding command is generated; In response to the decoding instruction, the emergency notification information is decoded.

8. The emergency communication method based on the BeiDou satellite navigation system as described in claim 5, characterized in that, The terminal device also performs the following processing steps, including: Extract the emergency level parameter from the emergency notification information; Determine whether the emergency level parameter of the emergency notification information is greater than the emergency threshold; if so, issue an audible alert to the user and display the emergency notification information simultaneously; otherwise, display the emergency notification information to alert the user.

9. An emergency communication system based on the BeiDou satellite navigation system, characterized in that, include: The BeiDou satellite navigation system, terminal equipment, and emergency command system, wherein the emergency command system includes an emergency information receiving module and an emergency information processing module; The emergency information receiving module has multiple interfaces for receiving emergency notification information sent from different channels and adding the information source field to the received emergency notification information message; the emergency notification information message includes information number, information length, information start symbol, information content, information end symbol, and next information number; The emergency information processing module is used to process the emergency notification information received by the emergency information receiving module, determine the urgency level of the information according to the information source and information content, and send the processed emergency notification information to the Beidou satellite navigation system. The BeiDou Navigation Satellite System is used to broadcast the emergency notification information; the emergency notification information is carried on the navigation and positioning signal of the BeiDou Navigation Satellite System; the BeiDou Navigation Satellite System broadcasts the emergency notification information by broadcasting the navigation and positioning signal; specifically, the emergency notification information is carried on the unallocated PageID in subframe 3 of the B1C signal; The terminal device is used to receive emergency notification information sent by the BeiDou satellite navigation system and process the received information according to the instructions in the information content; The terminal device also performs the following processing steps, including: When the emergency notification information is received, each of the corresponding preset number of characters is verified using its own verification symbol. The information content of the emergency notification information includes the verification symbol and verification segment number of each preset number of characters. If the preset number of characters fail the verification, the field containing the character is determined based on the verification segment number of the preset number of characters, so that the field is verified after the emergency notification information is received again, until all characters of the information content are identified.

10. The emergency communication system based on the BeiDou satellite navigation system as described in claim 9, characterized in that, The emergency information receiving module includes: The security classification parameter extraction unit is used to extract the security classification parameters from the emergency notification information; The information priority sending unit is used to determine whether the information security level parameter of the emergency notification information currently being sent is lower than that of the emergency notification information to be sent when the information security level parameter of the emergency notification information to be sent is higher than a preset first threshold. If so, the current information transmission is interrupted and the emergency notification information to be sent is immediately sent to the emergency information processing module.

11. The emergency communication system based on the BeiDou satellite navigation system as described in claim 9, characterized in that, The emergency information processing module includes: The first emergency level parameter extraction unit is used to extract the emergency level parameters of emergency notification information in the queue to be sent. The information priority determination unit is used to determine the priority information of the emergency notification information based on the magnitude of the emergency level parameter of the emergency notification information. The sending sorting unit is used to sort the information in the queue to be sent according to the priority information of the emergency notification information, so as to send the emergency notification information to the Beidou satellite navigation system according to the sorted queue to be sent.

12. The emergency communication system based on the BeiDou satellite navigation system as described in claim 9, characterized in that, The terminal device includes; The second emergency level parameter extraction unit is used to extract the emergency level parameters of the emergency notification information. The notification unit is used to determine whether the emergency level parameter of the emergency notification information is greater than the emergency threshold. If so, emit an audio alert to the user and simultaneously display the emergency notification information; Otherwise, the emergency notification information will be displayed to remind the user.

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