Emergency communication method, core network, medium and system

Abstract

The invention provides an emergency communication method, a core network, a medium and a system, relates to the technical field of communication, and is used for solving the problems that the existing emergency communication technology is insufficient in the aspects of economy, practicability, coverage range, response time and cost-effectiveness ratio. The method comprises the following steps: acquiring a certain emergency tracking area code (TAC) corresponding to a certain emergency communication service and the type of the certain emergency communication service; pointing a certain emergency communication service to a certain emergency access point name APN / data network name DNN according to the types of a certain emergency TAC and a certain emergency communication service; a certain emergency APN / DNN receives / sends data of a certain emergency communication service through an emergency access gateway, and the data is sent / received by an unmanned aerial vehicle air base station corresponding to a certain emergency TAC through a satellite. According to the invention, flexible communication of emergency communication service data is realized, and an emergency communication solution which is economical, practical, wide in coverage range, short in response time and high in cost-effectiveness ratio is obtained.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to an emergency communication method, a core network, a computer-readable storage medium and an emergency communication system. Background Art

[0002] When natural disasters occur, mobile communications are often interrupted in the affected areas. This may be due to problems with the mobile communication base station or the ground transmission network. In this case, emergency communication technology is needed to restore communications.

[0003] There are various emergency communication technologies available, including emergency communication vehicles, tethered drones, floating balloons and airships, but the trade-offs in terms of economy, practicality, coverage, response time, etc. have not resulted in a very good cost-effective solution. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an emergency communication method, a core network, a computer-readable storage medium and an emergency communication system in view of the above-mentioned deficiencies in the prior art, so as to solve the deficiencies in the existing emergency communication technology in terms of economy, practicality, coverage, response time and cost-effectiveness.

[0005] In a first aspect, the present invention provides an emergency communication method, applied to a core network, the method comprising:

[0006] Obtain an emergency tracking area code TAC corresponding to an emergency communication service and the type of an emergency communication service;

[0007] According to a certain emergency TAC and the type of a certain emergency communication service, a certain emergency communication service is directed to a certain emergency access point name APN / data network name DNN;

[0008] The data of a certain emergency communication service is received / sent by a certain emergency APN / DNN through the emergency access gateway, and the data is sent / received by the drone aerial base station corresponding to a certain emergency TAC through the satellite.

[0009] Optionally, before obtaining a certain emergency tracking area code TAC corresponding to a certain emergency communication service and a type of a certain emergency communication service, the method further includes:

[0010] In response to establishing a drone air base station for emergency communication needs, a unique emergency TAC is planned for each drone air base station;

[0011] The types of emergency communication services are divided into: the first emergency communication service for emergency personnel in the coverage area of ​​the drone aerial base station, the second emergency communication service for emergency Internet of Things devices, and the third emergency communication service for ordinary users.

[0012] Optionally, obtaining a certain emergency tracking area code TAC corresponding to a certain emergency communication service and a type of a certain emergency communication service specifically includes:

[0013] Obtain a certain emergency TAC of a drone aerial base station that is the source of a certain emergency communication service, and obtain the user number and data type of a certain emergency communication service corresponding to a certain emergency TAC;

[0014] If the user number corresponds to an emergency communication card belonging to the IoT core network and the data type is call data, then the type of a certain emergency communication service is determined to be a first emergency communication service;

[0015] If the user number corresponds to an emergency communication card belonging to the IoT core network and the data type is video data, then the type of a certain emergency communication service is determined to be a second emergency communication service;

[0016] If the user number corresponds to a communication card belonging to a common core network and the data type is call data, then the type of a certain emergency communication service is determined to be a third emergency communication service.

[0017] Optionally, according to a certain emergency TAC and a type of a certain emergency communication service, directing a certain emergency communication service to a certain emergency access point name APN / data network name DNN, the method further includes:

[0018] Establish several emergency APN / DNNs and specify the communication priority and access whitelist for each emergency APN / DNN;

[0019] Formulate data message uplink and downlink ULCL configuration policies for emergency APN / DNN, and send the ULCL configuration policies to the user plane function UPF of the emergency access gateway.

[0020] Optionally, establish several emergency APN / DNNs, and specify the communication priority and access whitelist of each emergency APN / DNN, including:

[0021] Establish several emergency APN / DNN according to the type of emergency communication services;

[0022] The communication rates of the respective time periods are set according to the satellite communication performance, and the current communication rate is determined according to the time period corresponding to the current time;

[0023] Specify the communication priority and access whitelist of each emergency APN / DNN according to the current communication rate.

[0024] Optionally, according to a certain emergency TAC and a type of a certain emergency communication service, a certain emergency communication service is directed to a certain emergency access point name APN / data network name DNN, specifically including:

[0025] Determine a communication priority of an emergency communication service according to an emergency TAC and a type of an emergency communication service, and determine an emergency APN / DNN with a corresponding communication priority;

[0026] Determine whether the user number of a certain emergency communication service is in the access whitelist of a certain emergency APN / DNN. If so, direct the certain emergency communication service to the certain emergency APN / DNN.

[0027] In a second aspect, the present invention provides a core network, the core network comprising:

[0028] An acquisition module, used to acquire a certain emergency tracking area code TAC corresponding to a certain emergency communication service and a type of a certain emergency communication service;

[0029] A pointing module, connected to the acquisition module, is used to point a certain emergency communication service to a certain emergency access point name APN / data network name DNN according to a certain emergency TAC and a type of a certain emergency communication service;

[0030] The emergency communication module is connected to the pointing module and is used to receive / send data of a certain emergency communication service through an emergency APN / DNN through an emergency access gateway. The data is sent / received by a drone aerial base station corresponding to a certain emergency TAC through a satellite.

[0031] In a third aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the emergency communication method as described above is implemented.

[0032] In a fourth aspect, the present invention provides an emergency communication system, the system comprising:

[0033] A core network, used to execute the emergency communication method as described above;

[0034] The emergency access gateway is connected to the core network and is used to assist the core network in receiving / sending emergency communication service data by the emergency APN / DNN;

[0035] The drone aerial base station is connected to the emergency access gateway and the core network via satellite, and is used to send / receive data of emergency communication services to the core network via satellite and the emergency access gateway.

[0036] Optionally, the drone aerial base station specifically includes a drone body, a radio frequency and baseband integrated base station, and a phased array flat-panel satellite antenna, wherein:

[0037] The radio frequency and baseband integrated base station is mounted on the drone body and is used to receive / send data of emergency communication services in its coverage area;

[0038] The phased array flat-panel satellite antenna is mounted on the drone body and is used to send / receive data on emergency communication services in its coverage area via satellite.

[0039] Optionally, the system further comprises:

[0040] Low-altitude inspection drones are connected to drone air base stations for emergency communication inspection operations, and send inspection data and receive control data through the drone air base station;

[0041] The drone control console is connected to the core network and is used to receive inspection data sent by the low-altitude inspection drone through the core network and send control numbers to the low-altitude inspection drone.

[0042] The present invention provides an emergency communication method, a core network, a computer-readable storage medium and an emergency communication system. By planning an emergency TAC, the types of emergency communication services are divided, and an emergency APN / DNN is established. The emergency communication service is directed to the emergency APN / DNN according to the emergency TAC and the type of the emergency communication service. The emergency APN / DNN of the core network is connected by an unmanned aerial vehicle air base station, a satellite, and an emergency access gateway to realize flexible communication of emergency communication service data, thereby obtaining an economical and practical emergency communication solution with a wide coverage range, a short response time, and a high cost-effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a flow chart of an emergency communication method according to an embodiment of the present invention;

[0044] Figure 2 is a structural diagram of an emergency communication system according to an embodiment of the present invention;

[0045] Figure 3 It is a structural schematic diagram of an emergency communication device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0047] It should be understood that the specific embodiments and drawings described herein are only used to explain the present invention rather than to limit the present invention.

[0048] It can be understood that, in the absence of conflict, the various embodiments of the present invention and the various features in the embodiments can be combined with each other.

[0049] It can be understood that, for the convenience of description, the drawings of the present invention only show the parts related to the present invention, while the parts irrelevant to the present invention are not shown in the drawings.

[0050] It can be understood that each unit and module involved in the embodiments of the present invention may correspond to only one physical structure, or may be composed of multiple physical structures, or multiple units and modules may be integrated into one physical structure.

[0051] It can be understood that, without conflict, the functions and steps marked in the flowcharts and block diagrams of the present invention may occur in an order different from that marked in the drawings.

[0052] It is understood that the flowcharts and block diagrams of the present invention illustrate the possible architectures, functions, and operations of the systems, devices, equipment, and methods according to the various embodiments of the present invention. Each box in the flowchart or block diagram may represent a unit, module, program segment, or code, which contains executable instructions for implementing the specified functions. Moreover, each box or combination of boxes in the block diagram and flowchart may be implemented by a hardware-based system that implements the specified functions, or by a combination of hardware and computer instructions.

[0053] It can be understood that the units and modules involved in the embodiments of the present invention can be implemented by software or hardware. For example, the units and modules can be located in a processor.

[0054] Embodiment 1:

[0055] like Figure 1 As shown, the present invention provides an emergency communication method, which can be applied to Figure 2 The core network 1 shown, the method includes:

[0056] S11, obtaining an emergency tracking area code TAC corresponding to a certain emergency communication service and a type of a certain emergency communication service;

[0057] S12. According to a certain emergency TAC and a type of a certain emergency communication service, direct a certain emergency communication service to a certain emergency access point name APN / data network name DNN;

[0058] S13. An emergency APN / DNN receives / sends data of an emergency communication service through the emergency access gateway 2, and the data is sent / received by the drone air base station 3 corresponding to an emergency TAC through the satellite 4.

[0059] Specifically, in this embodiment, in order to build a cost-effective emergency communication solution, firstly, Figure 2The emergency communication system shown includes: a core network 1, an emergency access gateway 2, an unmanned aerial base station 3, a satellite 4, a ground gateway 5, a ground user 6, a low-altitude inspection unmanned aerial vehicle 7, an unmanned aerial vehicle console 8 and a ground transmission network 9, wherein the emergency access gateway 2 is connected to the core network 1, and receives and sends data forwarded by the unmanned aerial vehicle base station 3 through the satellite 4 through the ground gateway 5. The unmanned aerial vehicle base station 3 is arranged in the emergency communication area and is responsible for the communication between the ground users 6 and the low-altitude inspection unmanned aerial vehicle 7 in the emergency communication area. The core network 1 is also connected to the unmanned aerial vehicle console 8 through the ground transmission network 9. The unmanned aerial vehicle console 8 is responsible for controlling the low-altitude inspection unmanned aerial vehicle 7 and receiving its inspection video data. The ground transmission network 9 may include an IP (Internet Protocol, Internet Interconnection Protocol) intelligent metropolitan area network, a bearer B network, an IPRAN (Internet Protocol-Radio Access Network, wireless access network IP), etc. The method described in this embodiment can be applied to the core network 1 of the system. The core network 1 plans the emergency TAC, classifies the types of emergency communication services, establishes the emergency APN / DNN, and directs the emergency communication services to the emergency APN / DNN according to the types of emergency TAC and emergency communication services. Then, the drone aerial base station 3, satellite 4, and emergency access gateway 2 are connected to the emergency APN / DNN of the core network 1 to achieve flexible communication of emergency communication service data, thereby obtaining an economical, practical, wide-coverage, short-response, and cost-effective emergency communication solution.

[0060] Optionally, before obtaining a certain emergency tracking area code TAC corresponding to a certain emergency communication service and a type of a certain emergency communication service, the method further includes:

[0061] In response to establishing the drone air base station 3 for emergency communication needs, a unique emergency TAC is planned for each drone air base station 3;

[0062] The types of emergency communication services are divided into: the first emergency communication service for emergency personnel in the coverage area of ​​the drone aerial base station 3, the second emergency communication service for emergency Internet of Things devices, and the third emergency communication service for ordinary users.

[0063] Specifically, in this embodiment, when forming Figure 2In the emergency communication system shown, the drone air base station 3 is improved. The improved drone air base station 3 includes a drone body, a radio frequency and baseband integrated base station, and a phased array flat-panel satellite antenna, wherein: the radio frequency and baseband integrated base station is mounted on the drone body, and is used to receive / send data of emergency communication services in its own coverage area; the phased array flat-panel satellite antenna is mounted on the drone body, and is used to send / receive data of emergency communication services in its own coverage area via satellite. More specifically, the drone body adopts a civilian medium-sized drone, and the radio frequency and baseband integrated base station adopts a 5G (5th Generation Mobile Communication Technology) radio frequency baseband integrated small base station, and the base station antenna is modified according to the air-to-ground coverage characteristics, so that the air base station is light in weight, small in size, and low in power consumption. Within a specific range, it can be brought to the sky by a more miniaturized aircraft, and the ground 5G signal can be uniformly covered by the modified antenna, which can better ensure the signal stability and communication quality of the coverage area. For the backhaul link of the drone air base station 3, a satellite link is used, and an improved phased array flat-panel satellite antenna is used to receive signals from high and low orbit satellites 4. Low orbit satellites have large capacity and high speed, and are more suitable for the backhaul of 5G communications. However, the deployment of low orbit satellites is limited at present, and the time and space range of communication are limited. By combining with high orbit satellites, when the low orbit satellite does not have the communication conditions, it automatically switches to high orbit satellite communication, thereby ensuring the continuity of 5G communication. Under the premise of considering the connection performance, the positioning system of the phased array flat-panel satellite antenna is combined with the flight control system on the drone body to realize the positioning of the drone air base station 3. There is no need to add additional positioning function, which can reduce the size and weight of the drone air base station 3. Based on the above-mentioned improved drone air base station 3, its signal is transmitted back to the ground signal gateway 5 through the satellite 4, and then enters the 5G core network 1 through the emergency access gateway 2. Considering the characteristics of the satellite 4 link such as small bandwidth and large delay, it may be a bottleneck in the network connection. It is necessary to differentiate the emergency communication service on the core network 1 side, give priority to key services and important data flow communications, and plan a new fixed special emergency TAC (Tracking Area Code) for the drone air base station 3. According to the emergency communication scenario, the actual data can be divided into emergency data and public network data. The emergency data is further divided into emergency personnel data and emergency Internet of Things data. The emergency personnel data mainly includes the data of emergency personnel among the ground users 5 in the emergency communication area, and the emergency Internet of Things data mainly includes the video data of the low-altitude inspection drone 7. The public network data mainly includes the instant communication data of ordinary users among the ground users 5 in the emergency communication area. The emergency data service needs to be protected first, and the priority of the public network data is second. In addition, the data is also divided into downlink data and uplink data, and the flow of data is participated by the whole system.

[0064] Optionally, obtaining a certain emergency tracking area code TAC corresponding to a certain emergency communication service and a type of a certain emergency communication service specifically includes:

[0065] Obtain a certain emergency TAC of the drone air base station 3 as a source of a certain emergency communication service, and obtain a user number and data type of a certain emergency communication service corresponding to the certain emergency TAC;

[0066] If the user number corresponds to an emergency communication card belonging to the IoT core network and the data type is call data, then the type of a certain emergency communication service is determined to be a first emergency communication service;

[0067] If the user number corresponds to an emergency communication card belonging to the IoT core network and the data type is video data, then the type of a certain emergency communication service is determined to be a second emergency communication service;

[0068] If the user number corresponds to a communication card belonging to a common core network and the data type is call data, then the type of a certain emergency communication service is determined to be a third emergency communication service.

[0069] Specifically, in this embodiment, if Figure 2 In the emergency communication system shown in the figure, the core network 1 constructs two physical 5GCs (5Gcore, 5G core network), one is the public network 5GC that provides services for ordinary users, and the other is the Internet of Things 5GC that provides services for the Internet of Things. Emergency personnel use 5G2B emergency communication cards (SIM cards issued by the Internet of Things 5GC), and their data services are guaranteed by setting a high-priority 5QI (Quality Index). Emergency Internet of Things devices also use 5G2B emergency communication cards, and their data services are guaranteed by setting a 5QI with a priority lower than that of emergency personnel data services but higher than that of public network data services. The 5GC to which it belongs is determined by the user card number, etc. At the same time, the priority also considers the data type. For example, the call data of emergency personnel has the highest priority, followed by the video data of the emergency Internet of Things device, while the public network data of ordinary users only allows small packet services such as instant messaging, limits large-flow services, and has a lower priority than the first two types of emergency data.

[0070] Optionally, according to a certain emergency TAC and a type of a certain emergency communication service, directing a certain emergency communication service to a certain emergency access point name APN / data network name DNN, the method further includes:

[0071] Establish several emergency APN / DNNs and specify the communication priority and access whitelist for each emergency APN / DNN;

[0072] Formulate data message uplink and downlink ULCL configuration strategy for the emergency APN / DNN, and send the ULCL configuration strategy to the user plane function UPF of the emergency access gateway 2.

[0073] Specifically, in this embodiment, if Figure 2 In the emergency communication system shown, the core network 1 is responsible for formulating emergency communication strategies and optimizing strategies according to emergency communication services and satellite communication links. More specifically, the PCF (Policy Control function) sends anchor point strategies and ULCL (Uplink Classifier) ​​strategies to the SMF (Service Management Function) and UPF (User Plane Function) respectively. The anchor point strategy is used to determine which APN (Access Point Name) / DNN (Data Network Name) exit the specific emergency communication service points to. The SMF activates voice calls, specific APPs (Applications), specific URLs (Uniform Resource Locators) and / or video streaming communications according to different user identities based on the strategies sent by the PCF. The ULCL strategy is the uplink and downlink strategy of data packets, and the UPF of the emergency access gateway 2 performs the ULCL configuration.

[0074] Optionally, establish several emergency APN / DNNs, and specify the communication priority and access whitelist of each emergency APN / DNN, including:

[0075] Establish several emergency APN / DNN according to the type of emergency communication services;

[0076] Setting the communication rates of the respective time periods according to the communication performance of the satellite 4, and determining the current communication rate according to the time period corresponding to the current time;

[0077] Specify the communication priority and access whitelist of each emergency APN / DNN according to the current communication rate.

[0078] Specifically, in this embodiment, if Figure 2The emergency communication system shown takes into account the differences in bandwidth of high-orbit and low-orbit satellites 4, and implements automatic rate limitation for specific time periods on PCF, thereby realizing the integration and automatic switching of communication links of high-orbit and low-orbit satellites 4. More specifically, since low-orbit satellites do not cover the entire time period and have specific transit periods, rate limitation is performed for designated time periods according to the transit periods of low-orbit satellites. The communication priority and access whitelist of each emergency APN / DNN are specified according to the communication performance of high-orbit and low-orbit satellites 4 in different time periods, so as to meet the requirements for communication rate.

[0079] Optionally, according to a certain emergency TAC and a type of a certain emergency communication service, a certain emergency communication service is directed to a certain emergency access point name APN / data network name DNN, specifically including:

[0080] Determine a communication priority of an emergency communication service according to an emergency TAC and a type of an emergency communication service, and determine an emergency APN / DNN with a corresponding communication priority;

[0081] Determine whether the user number of a certain emergency communication service is in the access whitelist of a certain emergency APN / DNN. If so, direct the certain emergency communication service to the certain emergency APN / DNN.

[0082] Specifically, in this embodiment, if Figure 2 In the emergency communication system shown in the figure, the core network 1 divides the emergency communication data service into three priorities according to the requirements of the emergency communication scenario, namely, emergency human data service, emergency material data service, and public network human data service. In order to ensure the communication rate and priority of the three types of data services, three APNs / DNNs can be established, such as DNN1, DNN2, and DNN3 respectively. On the SMF / UPF, according to the combination of emergency TAC and telephone number, the above three data services are redirected to the three DNNs respectively. For DNN1, the 5QI of the user service is set to 6, for DNN2, the 5QI of the user is set to 7, and for DNN3, the 5QI of the user is set to 9. An access whitelist is specified for DNN1 / DNN2 / DNN3 on SMF / UPF. By default, all users are not allowed to communicate. By specifying a whitelist, specific communications are limited to users of DNN1 / DNN2 / DNN3 to overcome the limitation of the limited bandwidth of the satellite 4 link. After the above-mentioned entire business process is established, the ground user 5 accesses the external network or conducts voice communication through the 5G terminal. The low-altitude inspection drone 7 below the coverage area of ​​the drone aerial base station 3 uses the aerial base station coverage network to access the drone console 8, accept the comprehensive application management and control of the drone console 8, and conduct inspection operations, and transmit video and control data in real time.

[0083] In embodiment 1 of the present invention, on the core network 1 side, combined with the characteristics of emergency communication, corresponding strategies for emergency communication are set and emergency access gateway 2 is constructed to realize overall management and control of emergency communication, classify the data services of emergency communication into three categories, and effectively overcome the bottleneck of the satellite 4 backhaul link, ensure the reasonable and effective execution of emergency communication, realize flexible communication of emergency communication service data, and obtain an economical and practical emergency communication solution with wide coverage, short response time and high cost-effectiveness; on the UAV air base station 3 side, an integrated base station of radio frequency and baseband is used to cover the ground with wireless signals, and a flat-panel phased array antenna is used to mount satellite equipment, mainly using low-orbit satellite communication, and automatically switching to high-orbit satellite communication when the low-orbit satellite cannot cover the time or space, thereby realizing the miniaturization, low power consumption and high performance of the UAV air base station 3.

[0084] Embodiment 2:

[0085] like Figure 3 As shown, embodiment 2 of the present invention provides a core network, and the core network includes:

[0086] An acquisition module 11 is used to acquire a certain emergency tracking area code TAC corresponding to a certain emergency communication service and a type of a certain emergency communication service;

[0087] The pointing module 12 is connected to the acquisition module 11 and is used to point a certain emergency communication service to a certain emergency access point name APN / data network name DNN according to a certain emergency TAC and a type of a certain emergency communication service;

[0088] The emergency communication module 13 is connected to the pointing module 12 and is used for receiving / sending data of a certain emergency communication service through an emergency APN / DNN via an emergency access gateway. The data is sent / received by a drone aerial base station corresponding to a certain emergency TAC via a satellite.

[0089] Optionally, the core network further includes:

[0090] The TAC unit is used to respond to the establishment of a drone air base station for emergency communication needs and plan a unique emergency TAC for each drone air base station;

[0091] A classification unit is used to classify the types of emergency communication services into: first emergency communication services for emergency personnel in the coverage area of ​​the drone aerial base station, second emergency communication services for emergency Internet of Things devices, and third emergency communication services for ordinary users.

[0092] Optionally, the acquisition module 11 specifically includes:

[0093] A direct acquisition unit is used to acquire a certain emergency TAC of a drone air base station that is a source of a certain emergency communication service, and to acquire a user number and data type of a certain emergency communication service corresponding to a certain emergency TAC;

[0094] The determination acquisition unit is connected to the direct acquisition unit and is used for:

[0095] If the user number corresponds to an emergency communication card belonging to the IoT core network and the data type is call data, then the type of an emergency communication service is determined to be a first emergency communication service.

[0096] If the user number corresponds to an emergency communication card belonging to the IoT core network and the data type is video data, then the type of a certain emergency communication service is determined to be a second emergency communication service.

[0097] If the user number corresponds to a communication card belonging to a common core network and the data type is call data, then the type of a certain emergency communication service is determined to be a third emergency communication service.

[0098] Optionally, the core network further includes:

[0099] A preset unit, used to establish several emergency APN / DNNs and specify the communication priority and access whitelist of each emergency APN / DNN;

[0100] The policy unit is connected to the preset unit and is used to formulate a data message uplink and downlink ULCL configuration policy for the emergency APN / DNN, and send the ULCL configuration policy to the user plane function UPF of the emergency access gateway.

[0101] Optionally, the preset unit is specifically used for:

[0102] Establish several emergency APN / DNN according to the type of emergency communication services;

[0103] The communication rates of the respective time periods are set according to the satellite communication performance, and the current communication rate is determined according to the time period corresponding to the current time;

[0104] Specify the communication priority and access whitelist of each emergency APN / DNN according to the current communication rate.

[0105] Optionally, the pointing module 12 specifically includes:

[0106] A priority corresponding unit, used to determine the communication priority of a certain emergency communication service according to a certain emergency TAC and a type of a certain emergency communication service, and determine a certain emergency APN / DNN with the corresponding communication priority;

[0107] The whitelist corresponding unit is connected to the priority corresponding unit and is used to determine whether the user number of a certain emergency communication service is in the access whitelist of a certain emergency APN / DNN. If so, the emergency communication service is directed to a certain emergency APN / DNN.

[0108] Embodiment 2 of the present invention provides a core network. The core network combines the characteristics of emergency communications, sets corresponding strategies for emergency communications, and builds emergency access gateways to achieve overall control of emergency communications. It classifies the data services of emergency communications into three categories, effectively overcomes the bottleneck of satellite return links, ensures the rational and effective execution of emergency communications, and achieves flexible communication of emergency communication service data, thereby obtaining an economical and practical emergency communication solution with a wide coverage range, short response time, and high cost-effectiveness.

[0109] Embodiment 3:

[0110] Embodiment 3 of the present invention provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the emergency communication method as described in Embodiment 1 is implemented.

[0111] The computer-readable storage medium includes volatile or non-volatile, removable or non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, computer program modules or other data). Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable read only memory), flash memory or other memory technology, CD-ROM (Compact Disc Read-Only Memory), digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer.

[0112] In addition, the present invention may also provide an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the processor runs the computer program stored in the memory, the processor executes the emergency communication method as described in Example 1.

[0113] The memory is connected to the processor, the memory may be a flash memory or a read-only memory or other memory, and the processor may be a central processing unit or a single-chip microcomputer.

[0114] Embodiment 3 of the present invention provides a computer-readable storage medium, whose program can run on a core network. In combination with the characteristics of emergency communications, corresponding strategies for emergency communications are set and emergency access gateways are constructed to achieve overall control of emergency communications, classify emergency communication data services into three categories, and effectively overcome the bottleneck of satellite return links to ensure the rational and effective execution of emergency communications, achieve flexible communication of emergency communication service data, and obtain an economical and practical emergency communication solution with a wide coverage range, short response time, and high cost-effectiveness.

[0115] Embodiment 4:

[0116] like Figure 2 As shown, Embodiment 4 of the present invention provides an emergency communication system, the system comprising:

[0117] Core network 1, used to execute the emergency communication method as described in Example 1;

[0118] The emergency access gateway 2 is connected to the core network 1 and is used to assist the core network 1 in receiving / sending data of emergency communication services by the emergency APN / DNN;

[0119] The drone aerial base station 3 is connected to the emergency access gateway 2 and the core network 1 via the satellite 4, and is used to send / receive data of emergency communication services to the core network 1 via the satellite 4 and the emergency access gateway 2.

[0120] Optionally, the drone aerial base station 3 specifically includes a drone body, a radio frequency and baseband integrated base station, and a phased array flat-panel satellite antenna, wherein:

[0121] The radio frequency and baseband integrated base station is mounted on the drone body and is used to receive / send data of emergency communication services in its coverage area;

[0122] The phased array flat-panel satellite antenna is mounted on the drone body and is used to send / receive data on emergency communication services in its coverage area via satellite.

[0123] Optionally, the system further comprises:

[0124] The low-altitude inspection drone 7 is connected to the drone air base station 3 for inspection operations for emergency communications, and sends inspection data and receives control data through the drone air base station 3;

[0125] The drone control console 8 is connected to the core network 1 , and is used to receive the inspection data sent by the low-altitude inspection drone 7 through the core network 1 and send control numbers to the low-altitude inspection drone 7 .

[0126] Embodiment 4 of the present invention provides an emergency communication system. On the core network 1 side, combined with the characteristics of emergency communication, corresponding emergency communication strategies are set and an emergency access gateway 2 is constructed to achieve overall control of emergency communication, classify emergency communication data services into three categories, and effectively overcome the bottleneck of the satellite 4 backhaul link to ensure the reasonable and effective execution of emergency communication, realize flexible communication of emergency communication service data, and obtain an economical, practical, wide-coverage, short response time, and cost-effective emergency communication solution; on the drone air base station 3 side, an integrated RF and baseband base station is used to cover the ground with wireless signals, and a flat-panel phased array antenna is used to mount satellite equipment, mainly using low-orbit satellite communication, and automatically switching to high-orbit satellite communication when the low-orbit satellite cannot cover the time or space, thereby realizing the miniaturization, low power consumption and high performance of the drone air base station 3.

[0127] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An emergency communication method, characterized in that: Applied to a core network, the method comprises: Obtain an emergency tracking area code TAC corresponding to an emergency communication service and the type of an emergency communication service; According to a certain emergency TAC and the type of a certain emergency communication service, a certain emergency communication service is directed to a certain emergency access point name APN / data network name DNN; The data of a certain emergency communication service is received / sent by a certain emergency APN / DNN through the emergency access gateway, and the data is sent / received by the drone aerial base station corresponding to a certain emergency TAC through the satellite.

2. The method according to claim 1, characterized in that: Before obtaining an emergency tracking area code TAC corresponding to an emergency communication service and a type of an emergency communication service, the method further includes: In response to establishing a drone air base station for emergency communication needs, a unique emergency TAC is planned for each drone air base station; The types of emergency communication services are divided into: the first emergency communication service for emergency personnel in the coverage area of ​​the drone aerial base station, the second emergency communication service for emergency Internet of Things devices, and the third emergency communication service for ordinary users.

3. The method according to claim 2, characterized in that Obtain an emergency tracking area code TAC corresponding to an emergency communication service and the type of an emergency communication service, including: Obtain a certain emergency TAC of a drone aerial base station that is the source of a certain emergency communication service, and obtain the user number and data type of a certain emergency communication service corresponding to a certain emergency TAC; If the user number corresponds to an emergency communication card belonging to the IoT core network and the data type is call data, then the type of a certain emergency communication service is determined to be a first emergency communication service; If the user number corresponds to an emergency communication card belonging to the IoT core network and the data type is video data, then the type of a certain emergency communication service is determined to be a second emergency communication service; If the user number corresponds to a communication card belonging to a common core network and the data type is call data, then the type of a certain emergency communication service is determined to be a third emergency communication service.

4. The method according to any one of claims 1 to 3, characterized in that: According to a certain emergency TAC and a type of a certain emergency communication service, directing a certain emergency communication service to a certain emergency access point name APN / data network name DNN, the method further includes: Establish several emergency APN / DNNs and specify the communication priority and access whitelist for each emergency APN / DNN; Formulate data message uplink and downlink ULCL configuration policies for emergency APN / DNN, and send the ULCL configuration policies to the user plane function UPF of the emergency access gateway.

5. The method according to claim 4, characterized in that Establish several emergency APN / DNNs and specify the communication priority and access whitelist for each emergency APN / DNN, including: Establish several emergency APN / DNN according to the type of emergency communication services; The communication rates of the respective time periods are set according to the satellite communication performance, and the current communication rate is determined according to the time period corresponding to the current time; Specify the communication priority and access whitelist of each emergency APN / DNN according to the current communication rate.

6. The method according to claim 4, characterized in that According to a certain emergency TAC and the type of a certain emergency communication service, a certain emergency communication service is directed to a certain emergency access point name APN / data network name DNN, including: Determine a communication priority of an emergency communication service according to an emergency TAC and a type of an emergency communication service, and determine an emergency APN / DNN with a corresponding communication priority; Determine whether the user number of a certain emergency communication service is in the access whitelist of a certain emergency APN / DNN. If so, direct the certain emergency communication service to the certain emergency APN / DNN.

7. A core network, characterized in that: The core network includes: An acquisition module, used to acquire a certain emergency tracking area code TAC corresponding to a certain emergency communication service and a type of a certain emergency communication service; A pointing module, connected to the acquisition module, is used to point a certain emergency communication service to a certain emergency access point name APN / data network name DNN according to a certain emergency TAC and a type of a certain emergency communication service; The emergency communication module is connected to the pointing module and is used to receive / send data of a certain emergency communication service through an emergency APN / DNN through an emergency access gateway. The data is sent / received by a drone aerial base station corresponding to a certain emergency TAC through a satellite.

8. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor, the emergency communication method as described in any one of claims 1 to 6 is implemented.

9. An emergency communication system, characterized in that: The system comprises: A core network, configured to execute the emergency communication method according to any one of claims 1 to 6; The emergency access gateway is connected to the core network and is used to assist the core network in receiving / sending emergency communication service data by the emergency APN / DNN; The drone aerial base station is connected to the emergency access gateway and the core network via satellite, and is used to send / receive data of emergency communication services to the core network via satellite and the emergency access gateway.

10. The system according to claim 9, characterized in that The drone aerial base station specifically includes a drone body, a radio frequency and baseband integrated base station, and a phased array flat-panel satellite antenna, wherein: The radio frequency and baseband integrated base station is mounted on the drone body and is used to receive / send data of emergency communication services in its coverage area; The phased array flat-panel satellite antenna is mounted on the drone body and is used to send / receive data on emergency communication services in its coverage area via satellite.

11. The system according to claim 9 or 10, characterized in that: The system further comprises: Low-altitude inspection drones are connected to drone air base stations for emergency communication inspection operations, and send inspection data and receive control data through the drone air base station; The drone control console is connected to the core network and is used to receive inspection data sent by the low-altitude inspection drone through the core network and to send control data to the low-altitude inspection drone.

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