Communication network construction method and device for coping with emergencies, terminal equipment and medium

Abstract

The invention discloses a communication network construction method and device for coping with emergencies, terminal equipment and a medium, and belongs to the technical field of wireless communication networks. The method comprises the following steps: determining a communication influence area according to an emergency occurrence position; determining setting modes of a target satellite and an air communication layer and a setting position of a temporary base station according to the communication influence area; performing communication access control on the target satellite according to the satellite communication demand quantity, and determining the set number of temporary base stations according to the temporary base station communication demand quantity; and providing a communication connection to the communication affected area based on the target satellite and the temporary base station. According to the technical scheme, the communication influence area is determined according to the emergency position, the related communication setting of the target satellite and the temporary base station is determined according to the communication influence area, and the communication network of the communication influence area is constructed, so that communication resource balance and rapid communication connection of the communication area influenced by the emergency can be realized; and the emergency response speed and the processing efficiency are improved.

Description

Technical Field

[0001] The present application belongs to the field of wireless communication network technology, and specifically relates to a communication network construction method, device, terminal equipment and medium for responding to emergency events. Background Art

[0002] In modern society, communication networks have become a key infrastructure for people's lives and social operations. However, in emergency scenarios such as earthquakes and mudslides, there will be extremely severe communication difficulties. When disasters such as earthquakes and mudslides occur, the power grid will be cut off due to damaged lines, and the power supply on which ground base stations rely will be interrupted. At the same time, network transmission lines will also be paralyzed due to landslides, ground cracks and other reasons.

[0003] As the ground base station cannot work properly, the user's communication terminal cannot obtain signals, cannot transmit the real situation of the disaster area to the outside world, and cannot receive rescue command information. This greatly hinders the rescue personnel from fully understanding the disaster situation, making it difficult to accurately allocate rescue resources, and has a serious impact on the timely rescue of personnel.

[0004] Therefore, how to quickly build a communication network after an emergency occurs is an urgent problem that people in this field need to solve. Summary of the invention

[0005] The present application provides a method, apparatus, terminal device and medium for constructing a communication network for responding to emergency events, with the aim of achieving communication resource balance and rapid communication connection in communication-affected areas in emergency situations, thereby improving emergency response speed and processing efficiency.

[0006] In a first aspect, the present application provides a method for constructing a communication network to respond to an emergency, the method comprising: After an emergency event occurs, obtaining the location of the emergency event, and determining a communication impact area according to the location of the emergency event; Determine the target satellite and the setting mode of the air communication layer according to the communication impact area, and the setting position of at least one temporary base station in the air communication layer; wherein the temporary base station includes a temporary base station for a drone and / or a temporary base station for an unmanned airship; Assessing the satellite communication demand and temporary base station communication demand in the communication impact area; Performing communication access control on the target satellite according to the satellite communication demand, and determining the number of temporary base stations to be set according to the temporary base station communication demand; wherein the types of the target satellites include Tiantong satellites and Beidou satellites; A communication connection is provided to the communication influence area based on the target satellite and the temporary base station to construct a communication network in the communication influence area.

[0007] In a second aspect, the present application provides a communication network construction device for responding to an emergency, the device comprising: An impact area determination module is used to obtain the location of the emergency event after the emergency event occurs, and determine the communication impact area according to the location of the emergency event; A mode and position determination module, used to determine the setting mode of the target satellite and the air communication layer according to the communication influence area, and the setting position of at least one temporary base station in the air communication layer; wherein the temporary base station includes a temporary base station for a drone and / or a temporary base station for an unmanned airship; A demand determination module, used to evaluate the satellite communication demand and the temporary base station communication demand in the communication impact area; An access control module is used to perform communication access control on the target satellite according to the satellite communication demand, and determine the number of temporary base stations to be set according to the temporary base station communication demand; wherein the types of the target satellites include Tiantong satellites and Beidou satellites; A communication network construction module is used to provide a communication connection to the communication influence area based on the target satellite and the temporary base station to construct a communication network in the communication influence area.

[0008] In a third aspect, the present application provides a terminal device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0009] In a fourth aspect, the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0010] In the present application, after an emergency occurs, the location of the emergency is obtained, and the communication impact area is determined according to the location; the setting mode of the target satellite and the air communication layer, and the setting location of at least one temporary base station in the air communication layer are determined according to the communication impact area; wherein the temporary base station includes a temporary base station for unmanned aerial vehicles and / or a temporary base station for unmanned airships; the satellite communication demand and the temporary base station communication demand in the communication impact area are evaluated; communication access control is performed on the target satellite according to the satellite communication demand, and the number of temporary base stations is determined according to the communication demand of the temporary base station; wherein the types of the target satellites include Tiantong satellites and Beidou satellites; based on the target satellites and the temporary base stations, a communication connection is provided to the communication impact area to construct a communication network in the communication impact area. The above-mentioned communication network construction method for responding to emergencies, by determining the communication impact area according to the location of the emergency, and determining the relevant communication settings of the target satellite and the temporary base station according to the communication impact area, to construct a communication network in the communication impact area, can achieve communication resource balance and rapid communication connection in the communication affected area in an emergency, and improve emergency response speed and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a flowchart of a method for constructing a communication network for responding to an emergency provided in Example 1 of the present application; Figure 2 It is a flow chart of a method for constructing a communication network for responding to emergencies provided in Embodiment 2 of the present application; Figure 3 It is a flowchart of a method for constructing a communication network to respond to emergencies provided in Embodiment 3 of the present application; Figure 4 It is a structural diagram of a communication network construction device for responding to emergency events provided in Embodiment 4 of the present application; Figure 5 It is a structural diagram of the terminal device provided in Example 5 of the present application. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical scheme and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for the convenience of description, only part of the present application is shown in the accompanying drawings, but not all of the content. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

[0013] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0014] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0015] In conjunction with the accompanying drawings, the following detailed description is given of the method, device, equipment and medium for constructing a communication network for responding to emergencies provided in the embodiments of the present application through specific embodiments and their application scenarios.

[0016] Embodiment 1 Figure 1 1 is a flow chart of a method for constructing a communication network for emergency response provided in the first embodiment of the present application. Figure 1 As shown, the specific steps include: S101, after an emergency event occurs, obtaining the location of the emergency event, and determining a communication impact area according to the location of the emergency event; First of all, the present application is applicable to scenarios where an emergency occurs suddenly in a region and emergency response needs to be carried out based on the communication network; wherein, an emergency may refer to an event that occurs suddenly, has a certain degree of harm or urgency, and may affect normal communications, such as natural disasters, accidental disasters, public health incidents, and social security incidents.

[0017] Based on the above usage scenarios, it can be understood that the execution subject of this application can be a communication management platform. Specifically, the communication management platform can be a comprehensive system for managing and controlling communication network resources to respond to emergencies or ensure communication needs in specific scenarios. Specifically, the communication management platform can be used to determine the communication impact area and the relevant data of the target satellite and temporary base station, and establish a reliable and efficient communication network in the communication impact area to provide a stable information transmission channel for emergency response.

[0018] The location of the emergency event may refer to the geographical location where the emergency event actually occurred. The method of obtaining the location of the emergency event may be to determine the location of the emergency event according to the communication content of the communication request related to the emergency event and the positioning location of each communication request after receiving the communication request related to the emergency event.

[0019] The communication impact area may refer to a geographical area where normal communication is affected due to the occurrence of an emergency. The communication impact area may be determined based on the location of the occurrence, by directly determining the location of the emergency as the communication impact area; the communication impact area may also be determined based on the location of the occurrence, by obtaining geographic feature data, event type, and disaster level parameters of the location of the emergency, generating a propagation attenuation model of the communication signal based on the geographic feature data, event type, and disaster level parameters, and determining the continuous area in which the attenuation value in the propagation attenuation model exceeds a preset attenuation threshold as the communication impact area.

[0020] In the technical solution, optionally, obtaining the occurrence location of the emergency event and determining the communication impact area according to the occurrence location includes: Obtaining geographic feature data of the location where the emergency event occurs, event type, and disaster level parameters; Generate a communication signal propagation attenuation model according to the geographic feature data, the event type and the disaster level parameter; A continuous area in which the attenuation value in the propagation attenuation model exceeds a preset attenuation threshold is determined as a communication impact area.

[0021] The geographic feature data of the location where the emergency occurred can refer to a collection of information related to the topography, landforms and features at the location where the emergency occurred. By using the location where the emergency occurred as a query condition and querying data sources such as geographic information databases, satellite remote sensing image databases, and geographic information system platforms, the geographic feature data of the location where the emergency occurred can be obtained.

[0022] The event type of an emergency event can refer to the category to which the emergency event belongs, such as natural disasters (earthquakes, floods, hurricanes, etc.), accident disasters (explosions, fires, traffic accidents, etc.), public health events (epidemic outbreaks, etc.) and social security events (terrorist attacks and mass incidents, etc.). Emergency events of different event types have different ways and degrees of damage to communication facilities, which in turn affects the propagation of communication signals.

[0023] The disaster level parameter of an emergency event may be a numerical value or index used to measure the severity or impact of the emergency event, such as the magnitude of an earthquake, the height of a flood, and the wind speed level of a hurricane. A larger disaster level parameter generally indicates a greater degree of damage in the emergency event and a greater impact on communication signal propagation.

[0024] The event type and the disaster level parameter of the emergency event may be determined based on the communication content of a communication request related to the emergency event, such as a communication request from a monitoring device of the disaster level parameter.

[0025] The propagation attenuation model of communication signals is a model established based on mathematical and physical principles, which is used to describe the situation where the intensity of communication signals gradually weakens when propagating in a specific environment. Specifically, the propagation attenuation model of communication signals can include geographical locations and corresponding attenuation values. According to geographical feature data, event types, and disaster level parameters, the method of generating the propagation attenuation model of communication signals can adopt a hybrid algorithm based on ray tracing combined with empirical propagation model, use geographical feature data to build a spatial propagation model, and modify the key parameters of the model according to event type and disaster level parameters to obtain the propagation attenuation model of communication signals; machine learning algorithms can also be used to use a large amount of historical communication signal attenuation data corresponding to different geographical feature data, event types, and disaster level parameters as training sets, train neural network models to accurately fit the attenuation law of communication signals, and input the current geographical feature data, event type, and disaster level parameters into the trained neural network model to obtain the propagation attenuation model of communication signals; electromagnetic simulation software can also be used to build an accurate electromagnetic environment model based on geographical feature data, and parameterize the factors affecting the propagation of communication signals in combination with event type and disaster level parameters to simulate and generate the propagation attenuation model.

[0026] The attenuation value may be a quantitative indicator used to measure the degree of weakening of the intensity of a communication signal during propagation. The preset attenuation threshold may be a pre-set reference value used to determine whether the attenuation degree of a communication signal reaches a level that affects normal communication. When the attenuation value of a certain geographical location in the propagation attenuation model exceeds the preset attenuation threshold, it is considered that the communication signal at the geographical location is severely affected and may not be able to communicate normally; the continuous area where the attenuation value in the propagation attenuation model exceeds the preset attenuation threshold is determined as a communication impact area, that is, the geographical location that is considered to be unable to communicate normally is determined as a communication impact area.

[0027] The benefit of this arrangement is that by generating a propagation attenuation model of the communication signal based on the geographic feature data of the location of the emergency event, the event type, and the disaster level parameters, the continuous area where the attenuation value in the propagation attenuation model exceeds the preset attenuation threshold is determined as the communication impact area. This can accurately locate the affected communication range, provide a reliable basis for the subsequent targeted deployment of emergency communication resources, and greatly improve the efficiency and accuracy of the construction of the emergency communication network.

[0028] S102, determining the target satellite and the setting mode of the air communication layer according to the communication impact area, and the setting position of at least one temporary base station in the air communication layer; wherein the temporary base station includes a temporary base station for a drone and / or a temporary base station for an unmanned airship; The target satellite may refer to a satellite selected to provide communication services to the communication affected area in the current emergency communication scenario. The types of target satellites may include Tiantong satellites and Beidou satellites. Specifically, Tiantong satellites and Beidou satellites are two different types of satellite systems.

[0029] The method of determining the target satellite according to the communication influence area can be adopted by obtaining the orbit information and signal power information of each connectable satellite, determining the residence time of each connectable satellite according to the communication influence area, the orbit information and the signal power information, and determining the connectable satellite with the longest residence time as the target satellite.

[0030] The air communication layer may refer to a communication architecture or platform built in the air, which is used to provide communication services in special circumstances (for example, when ground communication facilities are damaged or cannot meet the needs). The air communication layer may be composed of at least one temporary base station; a temporary base station may be a communication base station temporarily set up to respond to an emergency, used to enhance or restore communication signals in a specific area, and the types of temporary base stations may include drone temporary base stations and unmanned airship temporary base stations; a drone temporary base station may refer to a temporary communication base station using a drone as a carrier platform, and an unmanned airship temporary base station may refer to a temporary communication base station built based on an unmanned airship.

[0031] The setting method of the air communication layer may refer to information such as the division of different height levels in the air communication layer, the corresponding temporary base station configuration, and the coordination mechanism between the levels. The setting method of the air communication layer and the setting position of at least one temporary base station in the air communication layer may be determined according to the communication impact area, by determining the coverage area and terrain complexity parameters of the communication impact area, determining the setting method of the air communication layer according to the coverage area and terrain complexity parameters, determining the setting interval of the temporary base station according to the coverage area, and determining the setting position of at least one temporary base station in the air communication layer according to the communication impact area and the setting interval.

[0032] S103, evaluating the satellite communication demand and the temporary base station communication demand in the communication impact area; The satellite communication demand may refer to the number of communication requests that may be sent to the satellite within the communication influence area; the temporary base station communication demand may refer to the number of communication requests that may be sent to the temporary base station within the communication influence area.

[0033] The method for evaluating the demand for satellite communications and the demand for temporary base station communications in the communication impact area can be achieved by obtaining the event type and disaster level parameters of the emergency event, obtaining the population density information in the communication impact area, determining the evaluation scores corresponding to the event type, disaster level parameters and population density information, and performing weighted sum calculation on each evaluation score to obtain the sum of the satellite communication demand and the temporary base station communication demand, and finally determining the satellite communication demand and the temporary base station communication demand based on the sum and the preset allocation ratio of satellite communication and temporary base station communication.

[0034] S104, performing communication access control on the target satellite according to the satellite communication demand, and determining the number of temporary base stations to be set according to the temporary base station communication demand; wherein the types of the target satellites include Tiantong satellites and Beidou satellites; The method of controlling communication access to the target satellite according to the satellite communication demand can be achieved by obtaining the historical average load of the target satellite and the pre-allocated emergency communication capacity, and predicting the emergency communication load ratio of the target satellite based on the satellite communication demand, the historical average load and the pre-allocated emergency communication capacity, and determining the communication access control strategy of the target satellite based on the emergency communication load ratio.

[0035] The method for determining the number of temporary base stations to be set according to the communication demand of temporary base stations can be adopted. The communication business volume that each temporary base station can carry is calculated according to the technical parameters of the temporary base stations (such as maximum communication capacity, coverage radius, and number of concurrent connections, etc.), and the ratio of the communication demand of the temporary base station to the communication business volume is calculated as the number of temporary base stations to be set.

[0036] S105: providing a communication connection to the communication influence area based on the target satellite and the temporary base station to build a communication network in the communication influence area.

[0037] The method of providing communication connection to the communication influence area based on the target satellite and the temporary base station to build a communication network in the communication influence area can adopt the communication access control strategy of the above-mentioned target satellite, providing communication connection to the communication influence area based on the target satellite, and providing communication connection to the communication influence area based on the temporary base station with maximum signal transmission power to build the communication network in the communication influence area.

[0038] In an embodiment of the present application, after an emergency event occurs, the location of the emergency event is obtained, and the communication impact area is determined according to the location of the emergency event; the setting method of the target satellite and the air communication layer, and the setting location of at least one temporary base station in the air communication layer are determined according to the communication impact area; wherein the temporary base station includes a temporary base station for unmanned aerial vehicles and / or a temporary base station for unmanned airships; the satellite communication demand and the temporary base station communication demand in the communication impact area are evaluated; communication access control is performed on the target satellite according to the satellite communication demand, and the number of temporary base stations is determined according to the communication demand of the temporary base station; wherein the types of the target satellites include Tiantong satellites and Beidou satellites; based on the target satellites and the temporary base stations, a communication connection is provided to the communication impact area to construct a communication network in the communication impact area. The above-mentioned communication network construction method for responding to emergencies, by determining the communication impact area according to the location of the emergency event, and determining the relevant communication settings of the target satellite and the temporary base station according to the communication impact area, to construct a communication network in the communication impact area, can achieve communication resource balance and rapid communication connection in the communication affected area in an emergency, and improve emergency response speed and processing efficiency.

[0039] Embodiment 2 Figure 2 It is a flow chart of the communication network construction method for responding to emergencies provided in Example 2 of the present application. This solution makes a better improvement on the above-mentioned embodiment, and the specific improvement is: communication access control of the target satellite is performed according to the satellite communication demand, including: obtaining the historical average load of the target satellite and the pre-allocated emergency communication capacity, and predicting the emergency communication load ratio of the target satellite according to the satellite communication demand, the historical average load and the pre-allocated emergency communication capacity; determining the communication access control strategy of the target satellite according to the emergency communication load ratio.

[0040] like Figure 2 As shown, the specific steps include: S201, after an emergency event occurs, obtaining the location of the emergency event, and determining a communication impact area according to the location of the emergency event; S202, determining the target satellite and the setting mode of the air communication layer according to the communication impact area, and the setting position of at least one temporary base station in the air communication layer; wherein the temporary base station includes a temporary base station for a drone and / or a temporary base station for an unmanned airship; S203, evaluating the satellite communication demand and the temporary base station communication demand in the communication impact area; S204, obtaining the historical average load and the pre-allocated emergency communication capacity of the target satellite, and predicting the emergency communication load ratio of the target satellite according to the satellite communication demand, the historical average load and the pre-allocated emergency communication capacity; wherein the types of the target satellite include Tiantong satellite and Beidou satellite; The historical average load of the target satellite may refer to the number of communication requests received by the target satellite per unit time before the current time point. The historical average load of the target satellite may be obtained by analyzing the communication service data of the target satellite in the past period of time recorded in the satellite operation management system.

[0041] The pre-allocated emergency communication capacity may refer to the amount of communication resources reserved in advance for the target satellite in the emergency communication plan specifically for responding to possible emergency events. The pre-allocated emergency communication capacity may be obtained by referring to the communication resource configuration reserved for the target satellite in different emergency scenarios clearly specified in the satellite emergency communication plan document.

[0042] The emergency communication load ratio of the target satellite may refer to the ratio of the communication load of the target satellite that can handle communication requests related to emergency events relative to its total capacity. According to the satellite communication demand, the historical average load and the pre-allocated emergency communication capacity, the method of predicting the emergency communication load ratio of the target satellite can be to calculate the weighted sum of the satellite communication demand, the historical average load and the pre-allocated emergency communication capacity according to the first preset weight to obtain the emergency communication load ratio of the target satellite. Among them, the sum of the first preset weights corresponding to the satellite communication demand, the historical average load and the pre-allocated emergency communication capacity is 1, and the first preset weights corresponding to the satellite communication demand, the historical average load and the pre-allocated emergency communication capacity can be 0.6, 0.2 and 0.2 respectively.

[0043] S205, determining a communication access control strategy for the target satellite according to the emergency communication load ratio; The method of determining the communication access control strategy of the target satellite according to the emergency communication load ratio can be adopted as follows: when the emergency communication load ratio is less than the first preset ratio, the communication access control strategy of the target satellite can be determined as allowing all communication requests to access; when the emergency communication load ratio exceeds the second preset ratio, the communication access control strategy of the target satellite can be determined as allowing only high-priority communication requests to access; when the emergency communication load ratio exceeds the first preset ratio and is less than the second preset ratio, the bandwidth allocation ratio of the communication requests of each priority level is determined according to the preset dynamic adjustment parameters of the communication requests of each priority level and the emergency communication load ratio, and the communication access control strategy of the target satellite can be determined as accessing the communication requests according to the bandwidth allocation ratio.

[0044] In the technical solution, optionally, determining the communication access control strategy of the target satellite according to the emergency communication load ratio includes: When the emergency communication load ratio is less than a first preset ratio, determining the communication access control strategy of the target satellite to allow all communication requests to access; or, When the emergency communication load ratio exceeds a second preset ratio, the communication access control policy of the target satellite is determined to allow only high-priority communication requests to access; wherein the high-priority communication requests include emergency command requests and first aid requests.

[0045] The first preset ratio can be a preset limit value for judging that the emergency communication load of the target satellite is relatively light, such as 50%. If the emergency communication load ratio is less than the first preset ratio, it means that the communication resources of the target satellite are relatively abundant and have sufficient capacity to handle various communication requests. Therefore, the communication access control strategy of the target satellite can be determined as allowing all communication requests to access. Allowing all communication requests to access means that regardless of the service type and priority of the request, they are given the right to access the satellite communication system.

[0046] The second preset ratio can be a pre-set limit value for judging whether the target satellite emergency communication load is too heavy, such as 80%. If the emergency communication load ratio exceeds the second preset ratio, it means that the communication resources of the target satellite are close to saturation or even overloaded, and it is difficult to meet all communication requests. Therefore, the communication access control strategy of the target satellite can be determined to allow only high-priority communication requests to access. Only high-priority communication requests are allowed to access, that is, only emergency command requests and first aid requests that are critical to the entire emergency treatment are approved to access the satellite communication system, while other communication requests with lower priorities are temporarily rejected. Among them, in the context of communication requests, priority is used to determine the order of different requests when competing for limited communication resources; high-priority communication requests can refer to communication requests that are at a higher level in all priority levels, such as emergency command requests and first aid requests; emergency command requests can refer to communication requests issued after an emergency occurs to coordinate, organize and command emergency rescue operations, and first aid requests can refer to communication requests related to medical first aid.

[0047] The benefit of setting up this scheme is that by determining the communication access control policy of the target satellite to allow all communication requests to access when the emergency communication load ratio is less than the first preset ratio, or by determining the communication access control policy of the target satellite to allow only high-priority communication requests to access when the emergency communication load ratio exceeds the second preset ratio, resources can be flexibly allocated according to the real-time communication load of the satellite, which can fully meet various communication needs when resources are abundant, and ensure the efficient development of key emergency services when resources are tight, thereby significantly improving the overall efficiency and reliability of the emergency communication system.

[0048] In the technical solution, optionally, determining the communication access control strategy of the target satellite according to the emergency communication load ratio further includes: When the emergency communication load ratio exceeds the first preset ratio and is less than the second preset ratio, determining the bandwidth allocation ratio of the communication requests of each priority level according to the preset dynamic adjustment parameters of the communication requests of each priority level and the emergency communication load ratio; Determine the communication access control strategy of the target satellite to access the communication request according to the bandwidth allocation ratio.

[0049] The preset dynamic adjustment parameters may be a set of parameters pre-set for communication requests of different priorities. The bandwidth allocation ratio may refer to the proportion of the share of communication requests of each priority in the total bandwidth of satellite communication. According to the preset dynamic adjustment parameters of the communication requests of each priority and the emergency communication load ratio, the bandwidth allocation ratio of the communication requests of each priority is determined. The emergency communication load ratio may be used as the bandwidth allocation ratio of the high-priority communication requests (such as emergency command requests and first aid requests), and the difference between 1 and the emergency communication load ratio is calculated. The preset dynamic adjustment parameter of the communication request of one priority is divided by the sum of the preset dynamic adjustment parameters of the communication requests of each priority and multiplied by the difference to obtain the bandwidth allocation ratio of the communication request of the priority.

[0050] If the emergency communication load ratio exceeds the first preset ratio and is less than the second preset ratio, it means that the communication resources of the target satellite are in a moderately tense state. Although it has not reached saturation, it is unable to meet all communication requests indiscriminately. Therefore, the communication access control strategy of the target satellite can be determined as accessing communication requests according to the bandwidth allocation ratio. Accessing communication requests according to the bandwidth allocation ratio means allocating a corresponding share of satellite communication bandwidth resources to each communication request based on the bandwidth allocation ratio calculated according to communication requests of different priorities.

[0051] The benefit of this arrangement of the present scheme is that, by determining the bandwidth allocation ratio of communication requests of each priority level according to the preset dynamic adjustment parameters of the communication requests of each priority level and the emergency communication load ratio when the emergency communication load ratio exceeds the first preset ratio and is less than the second preset ratio, and determining the communication access control strategy of the target satellite to access the communication requests according to the bandwidth allocation ratio, it is possible to achieve refined management of satellite communication resources, while ensuring the quality of emergency business communications, taking into account other business needs as much as possible, and improving the overall performance and stability of the emergency communication system under complex load conditions.

[0052] S206, determining the number of temporary base stations to be set according to the communication demand of the temporary base station; S207: providing a communication connection to the communication influence area based on the target satellite and the temporary base station to build a communication network in the communication influence area.

[0053] The benefit of setting up this scheme is that by predicting the emergency communication load ratio of the target satellite based on the satellite communication demand, the historical average load of the target satellite and the pre-allocated emergency communication capacity, and determining the communication access control strategy of the target satellite based on the emergency communication load ratio, satellite communication resources can be reasonably allocated, the efficiency and stability of emergency communications can be improved, and it can be ensured that various emergency services can be effectively supported under different load conditions.

[0054] Embodiment 3 Figure 3 It is a flow chart of the communication network construction method for responding to emergencies provided in Example 3 of the present application. This scheme makes better improvements to the above-mentioned embodiments, and the specific improvements are: determining the setting method of the air communication layer and the setting position of at least one temporary base station in the air communication layer according to the communication impact area, including: determining the coverage area and terrain complexity parameters of the communication impact area; determining the setting method of the air communication layer according to the coverage area and the terrain complexity parameters; wherein the setting method includes a low-altitude communication layer and / or a mid-altitude communication layer; determining the setting interval of the temporary base station according to the coverage area, and determining the setting position of at least one temporary base station in the air communication layer according to the communication impact area and the setting interval.

[0055] like Figure 3 As shown, the specific steps include: S301, after an emergency event occurs, obtaining the location of the emergency event, and determining a communication impact area according to the location of the emergency event; S302, determining the coverage area and terrain complexity parameters of the communication impact area; The coverage area of ​​the communication influence area may refer to the size of the area of ​​the communication influence area. The coverage area of ​​the communication influence area may be directly calculated according to the geographical location of the communication influence area.

[0056] The terrain complexity parameter of the communication impact area can be a parameter used to describe the complexity of the terrain features within the communication impact area. Different terrain complexities will have different effects on the propagation of communication signals, and will also affect the setting of the air communication layer and the deployment of temporary base stations. For example, in areas with complex terrain such as mountainous areas, more temporary base stations may be required to ensure communication coverage, while the number of temporary base stations can be relatively reduced in plain areas. The terrain complexity parameter of the communication impact area can be evaluated based on the geographical feature data within the communication impact area. For example, the elevation standard deviation, building density and vegetation coverage of the communication impact area are determined based on the geographical feature data within the communication impact area, and the elevation standard deviation, building density and vegetation coverage are weighted and summed to obtain the terrain complexity parameter of the communication impact area.

[0057] S303, determining a setting mode of an aerial communication layer according to the coverage area and the terrain complexity parameter; wherein the setting mode includes a low-altitude communication layer and / or a mid-altitude communication layer; The low-altitude communication layer may refer to the air communication layer set up in a relatively low altitude range, and the low-altitude communication layer generally includes temporary base stations for drones; the medium-altitude communication layer may refer to the air communication layer set up in an altitude range above the low-altitude communication layer, and the medium-altitude communication layer generally includes temporary base stations for unmanned airships.

[0058] The method for determining the setting mode of the air communication layer according to the coverage area and the terrain complexity parameter can be: obtaining the configurable number and the coverable radius of the temporary base station of the drone, and determining a first preset threshold value according to the configurable number and the coverable radius; when the coverage area is less than the first preset threshold value and the terrain complexity parameter is less than the second preset threshold value, determining the setting mode of the air communication layer to be the low-altitude communication layer; when the coverage area exceeds the first preset threshold value and the terrain complexity parameter exceeds the second preset threshold value, determining the setting mode of the air communication layer to be the mid-altitude communication layer; in other cases, determining the setting mode of the air communication layer to be the use of both the low-altitude communication layer and the mid-altitude communication layer.

[0059] In the technical solution, optionally, determining the setting mode of the air communication layer according to the coverage area and the terrain complexity parameter includes: Obtaining a configurable number and a coverable radius of a temporary base station for a drone, and determining a first preset threshold value according to the configurable number and the coverable radius; When the coverage area is less than a first preset threshold and the terrain complexity parameter is less than a second preset threshold, determining that the setting mode of the air communication layer is a low-altitude communication layer; wherein the second preset threshold is determined based on historical terrain complexity parameters and historical setting mode statistics; or, When the coverage area exceeds a first preset threshold and the terrain complexity parameter exceeds a second preset threshold, determining that the setting mode of the air communication layer is a hollow communication layer; or, In other cases, the setting method of determining the air communication layer is to use both the low-altitude communication layer and the mid-altitude communication layer.

[0060] The configurable number of temporary drone base stations may refer to the maximum number of temporary drone base stations that can actually be set up within the communication impact area. The coverage radius of a temporary drone base station may refer to the radius of the circular area that the communication signal of a single temporary drone base station can effectively cover under normal working conditions. To obtain the configurable number and coverage radius of temporary drone base stations, a pre-established device resource database may be queried to obtain the currently available number of temporary drone base stations as the configurable number, and the coverage radius may be determined based on the test data of the temporary drone base station of this model under a standard environment.

[0061] The first preset threshold may be the area that can be effectively covered by the temporary base station of the drone under a certain number and coverage capacity, calculated based on the number of temporary base stations that can be set and the coverage radius. The second preset threshold may be a demarcation value of a terrain complexity parameter used to determine whether the current situation is suitable for a certain setting method of the air communication layer; the second preset threshold may be determined based on historical terrain complexity parameters and historical setting methods.

[0062] Since the low-altitude communication layer has the characteristics of strong mobility and flexible deployment, it can quickly provide effective communication coverage for small areas with relatively simple terrain. In this scenario, the use of the low-altitude communication layer can not only meet communication needs, but also efficiently utilize resources and avoid waste caused by the use of complex and costly communication layer settings. Therefore, when the coverage area is less than the first preset threshold and the terrain complexity parameter is less than the second preset threshold, the setting mode of the air communication layer can be determined as the low-altitude communication layer.

[0063] The hollow communication layer has the advantage of a larger communication coverage range and can effectively meet the communication needs of large areas. Its relatively stable signal transmission characteristics can overcome the multiple interferences of complex terrain on signal propagation. Therefore, when the coverage area exceeds the first preset threshold and the terrain complexity parameter exceeds the second preset threshold, the setting mode of the aerial communication layer can be determined as the hollow communication layer.

[0064] In other cases, that is, when the coverage area and terrain complexity parameters present a diverse combination and a single low-altitude communication layer or mid-altitude communication layer is difficult to fully meet the communication needs, it can be determined that the aerial communication layer is set up in a way that both the low-altitude communication layer and the alpine communication layer are used.

[0065] The advantage of setting up this scheme is that by determining the first preset threshold based on the number of temporary base stations that can be set up and the coverable radius of the drone, and determining the setting method of the air communication layer based on the coverage area of ​​the communication impact area and the first preset threshold and the terrain complexity parameter and the second preset threshold, the resources of temporary base stations in the air can be accurately and efficiently allocated.

[0066] S304, determining the setting interval of the temporary base station according to the coverage area, and determining the setting position of at least one temporary base station in the air communication layer according to the communication impact area and the setting interval; wherein the temporary base station includes a temporary base station for a drone and / or a temporary base station for an unmanned airship; The setting interval of the temporary base station may refer to the distance between two adjacent temporary base stations. The setting interval of the temporary base station may be determined according to the coverage area by performing a square root calculation on the coverage area and multiplying the square root calculation result by a preset coefficient to obtain the setting interval of the temporary base station. The preset coefficient may be set according to the coverage radius of the temporary base station, for example, 0.8.

[0067] The method of determining the setting position of at least one temporary base station in the air communication layer according to the communication influence area and the setting interval can be adopted to evenly distribute the setting positions of the temporary base stations in the communication influence area according to the setting interval.

[0068] S305, evaluating the satellite communication demand and the temporary base station communication demand in the communication impact area; S306, performing communication access control on the target satellite according to the satellite communication demand, and determining the number of temporary base stations to be set according to the temporary base station communication demand; wherein the types of the target satellites include Tiantong satellites and Beidou satellites; S307: providing a communication connection to the communication influence area based on the target satellite and the temporary base station to build a communication network in the communication influence area.

[0069] The advantage of this arrangement of the present scheme is that by determining the setting method of the aerial communication layer according to the coverage area of ​​the communication impact area and the terrain complexity parameters, determining the setting interval of the temporary base station according to the coverage area, and determining the setting position of at least one temporary base station in the aerial communication layer according to the communication impact area and the setting interval, the low-altitude and mid-altitude communication layers can be reasonably planned according to the coverage area and terrain complexity parameters, which can not only ensure the basic communication coverage of a large area, but also perform refined signal enhancement for complex terrain areas.

[0070] Embodiment 4 Figure 4 Schematic diagram of the structure of the communication network construction device for emergency response provided in the fourth embodiment of the present application. Figure 4 As shown, the device comprises: The impact area determination module 410 is used to obtain the occurrence location of the emergency event after the emergency event occurs, and determine the communication impact area according to the occurrence location; A mode and position determination module 420 is used to determine the setting mode of the target satellite and the air communication layer according to the communication influence area, and the setting position of at least one temporary base station in the air communication layer; wherein the temporary base station includes a temporary base station for a drone and / or a temporary base station for an unmanned airship; A demand determination module 430 is used to evaluate the satellite communication demand and the temporary base station communication demand in the communication impact area; The access control module 440 is used to perform communication access control on the target satellite according to the satellite communication demand, and determine the number of temporary base stations to be set according to the temporary base station communication demand; wherein the types of the target satellites include Tiantong satellites and Beidou satellites; The communication network construction module 450 is used to provide a communication connection to the communication influence area based on the target satellite and the temporary base station to construct a communication network in the communication influence area.

[0071] In an embodiment of the present application, an impact area determination module is used to obtain the location of the emergency event after the emergency event occurs, and determine the communication impact area according to the location of the emergency event; a mode and position determination module is used to determine the setting mode of the target satellite and the air communication layer according to the communication impact area, and the setting position of at least one temporary base station in the air communication layer; wherein the temporary base station includes a temporary base station for unmanned aerial vehicles and / or a temporary base station for unmanned airships; a demand determination module is used to evaluate the satellite communication demand and the temporary base station communication demand in the communication impact area; an access control module is used to perform communication access control on the target satellite according to the satellite communication demand, and, according to the communication demand of the temporary base station, determine the number of temporary base stations to be set; wherein the types of the target satellite include Tiantong satellites and Beidou satellites; a communication network construction module is used to provide communication connection to the communication impact area based on the target satellite and the temporary base station to build a communication network in the communication impact area. The above-mentioned communication network construction device for responding to emergency events determines the communication impact area according to the location of the emergency event, and determines the relevant communication settings of the target satellite and the temporary base station according to the communication impact area to build a communication network in the communication impact area. In an emergency, communication resource balance and rapid communication connection in the communication impact area can be achieved, thereby improving the emergency response speed and processing efficiency.

[0072] The communication network construction device for responding to emergencies in the embodiment of the present application can be a device, or a component, integrated circuit, or chip in a terminal. The device can be a mobile terminal device or a non-mobile terminal device. Exemplarily, the mobile terminal device can be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted terminal device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. The non-mobile terminal device can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.

[0073] The communication network construction device for responding to emergencies in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an IOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0074] The communication network construction device for responding to emergency events provided in the embodiment of the present application can implement each process implemented in the above-mentioned embodiments one to three, and will not be repeated here to avoid repetition.

[0075] Embodiment 5 like Figure 5 As shown, an embodiment of the present application also provides a terminal device 500, including a processor 501, a memory 502, and a program or instruction stored in the memory 502 and executable on the processor 501. When the program or instruction is executed by the processor 501, each process of the above-mentioned embodiment of the communication network construction method for responding to emergency events is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0076] Embodiment 6 An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned embodiment of the communication network construction method for responding to emergency events is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0077] The processor is the processor in the terminal device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0078] Embodiment 7 An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned embodiment of the communication network construction method for responding to emergency events, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0079] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0080] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0081] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0082] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0083] The above are only preferred embodiments of the present application and the technical principles used. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions that can be made by those skilled in the art will not deviate from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A method for constructing a communication network to cope with emergencies, characterized in that: The method comprises: After an emergency event occurs, obtaining the location of the emergency event, and determining a communication impact area according to the location of the emergency event; Determine the target satellite and the setting mode of the air communication layer according to the communication impact area, and the setting position of at least one temporary base station in the air communication layer; wherein the temporary base station includes a temporary base station for a drone and / or a temporary base station for an unmanned airship; Assessing the satellite communication demand and temporary base station communication demand in the communication impact area; Performing communication access control on the target satellite according to the satellite communication demand, and determining the number of temporary base stations to be set according to the temporary base station communication demand; wherein the types of the target satellites include Tiantong satellites and Beidou satellites; A communication connection is provided to the communication influence area based on the target satellite and the temporary base station to construct a communication network in the communication influence area.

2. The method for constructing a communication network for responding to emergencies according to claim 1, characterized in that: The method further comprises: performing communication access control on the target satellite according to the satellite communication demand, comprising: Obtaining the historical average load and the pre-allocated emergency communication capacity of the target satellite, and predicting the emergency communication load ratio of the target satellite according to the satellite communication demand, the historical average load and the pre-allocated emergency communication capacity; A communication access control strategy for the target satellite is determined according to the emergency communication load ratio.

3. The method for constructing a communication network for responding to emergencies according to claim 2, characterized in that: Determining a communication access control strategy for the target satellite according to the emergency communication load ratio includes: When the emergency communication load ratio is less than a first preset ratio, determining the communication access control strategy of the target satellite to allow all communication requests to access; or, When the emergency communication load ratio exceeds a second preset ratio, the communication access control policy of the target satellite is determined to allow only high-priority communication requests to access; wherein the high-priority communication requests include emergency command requests and first aid requests.

4. The method for constructing a communication network for responding to emergencies according to claim 3, characterized in that: Determining the communication access control strategy of the target satellite according to the emergency communication load ratio also includes: When the emergency communication load ratio exceeds the first preset ratio and is less than the second preset ratio, determining the bandwidth allocation ratio of the communication requests of each priority level according to the preset dynamic adjustment parameters of the communication requests of each priority level and the emergency communication load ratio; Determine the communication access control strategy of the target satellite to access the communication request according to the bandwidth allocation ratio.

5. The method for constructing a communication network for responding to emergencies according to claim 1, characterized in that: Obtaining the location of the emergency event, and determining the communication impact area according to the location of the emergency event, including: Obtaining geographic feature data of the location where the emergency event occurs, event type, and disaster level parameters; Generate a communication signal propagation attenuation model according to the geographic feature data, the event type and the disaster level parameter; A continuous area in which the attenuation value in the propagation attenuation model exceeds a preset attenuation threshold is determined as a communication impact area.

6. The method for constructing a communication network for responding to emergencies according to claim 1, characterized in that: Determining a setting mode of an air communication layer and a setting position of at least one temporary base station in the air communication layer according to the communication impact area includes: Determining the coverage area and terrain complexity parameters of the communication impact area; Determine the setting mode of the aerial communication layer according to the coverage area and the terrain complexity parameter; wherein the setting mode includes a low-altitude communication layer and / or a mid-altitude communication layer; The setting interval of the temporary base station is determined according to the coverage area, and the setting position of at least one temporary base station in the air communication layer is determined according to the communication impact area and the setting interval.

7. The method for constructing a communication network for responding to emergencies according to claim 6, characterized in that: According to the coverage area and the terrain complexity parameter, determining a setting mode of the air communication layer includes: Obtaining a configurable number and a coverable radius of a temporary base station for a drone, and determining a first preset threshold value according to the configurable number and the coverable radius; When the coverage area is less than a first preset threshold and the terrain complexity parameter is less than a second preset threshold, determining that the setting mode of the air communication layer is a low-altitude communication layer; wherein the second preset threshold is determined based on historical terrain complexity parameters and historical setting mode statistics; or, When the coverage area exceeds a first preset threshold and the terrain complexity parameter exceeds a second preset threshold, determining that the setting mode of the air communication layer is a hollow communication layer; or, In other cases, the setting method of determining the air communication layer is to use both the low-altitude communication layer and the mid-altitude communication layer.

8. A communication network construction device for responding to emergencies, characterized in that: The device comprises: An impact area determination module is used to obtain the location of the emergency event after the emergency event occurs, and determine the communication impact area according to the location of the emergency event; A mode and position determination module, used to determine the setting mode of the target satellite and the air communication layer according to the communication influence area, and the setting position of at least one temporary base station in the air communication layer; wherein the temporary base station includes a temporary base station for a drone and / or a temporary base station for an unmanned airship; A demand determination module, used to evaluate the satellite communication demand and the temporary base station communication demand in the communication impact area; An access control module is used to perform communication access control on the target satellite according to the satellite communication demand, and determine the number of temporary base stations to be set according to the temporary base station communication demand; wherein the types of the target satellites include Tiantong satellites and Beidou satellites; A communication network construction module is used to provide a communication connection to the communication influence area based on the target satellite and the temporary base station to construct a communication network in the communication influence area.

9. A terminal device, characterized in that: The invention comprises a processor, a memory and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method for constructing a communication network for responding to emergencies as described in any one of claims 1 to 7.

10. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the method for constructing a communication network for responding to emergencies as described in any one of claims 1 to 7 are implemented.

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