Emergency communication method, airborne base station and emergency communication system

Abstract

The invention provides an emergency communication method, an airborne base station and an emergency communication system, and belongs to the technical field of emergency communication. In the method, an airborne base station configures and operates a plurality of virtual sub-base stations based on parameter information of a plurality of network operators, and each virtual sub-base station corresponds to one network operator; broadcasting the access information of each virtual sub-base station to the target emergency area; receiving an access request sent by the terminal equipment based on the access information, wherein the access request carries a network identifier of a network operator to which the terminal equipment belongs; enabling the terminal equipment to access the corresponding target virtual sub-base station based on the network identifier; and establishing a target logic tunnel between the target virtual sub base station and the target core network, and forwarding the control signaling and the user data through the target logic tunnel. Therefore, access of terminal equipment of multiple network operators and connection of a core network can be considered under deployment of one airborne base station, parallel deployment requirements of multiple airborne base stations are reduced, deployment scheduling complexity is reduced, and field communication guarantee response efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of emergency communication technology, and in particular to an emergency communication method, an airborne base station, and an emergency communication system. Background Technology

[0002] In emergency scenarios such as natural disasters, major accidents, and public safety incidents, ground communication infrastructure in emergency communication areas may experience power outages, damage, or transmission link interruptions, leading to a lack of wireless network coverage, a sharp drop in capacity, or even partial paralysis. This can affect public communication, emergency command and dispatch, and rescue coordination in the emergency communication area. To restore or enhance wireless network coverage and communication capabilities in emergency communication areas in a short period of time, the industry has proposed and developed various emergency communication support methods, such as portable base stations, emergency communication vehicles, satellite communication terminals, and communication payloads mounted on aerial platforms. Among these, UAV-mounted base stations (airborne base stations) are gradually becoming one of the important technological directions for emergency communication due to their rapid deployment and ability to quickly form temporary network coverage over emergency communication areas.

[0003] In related technologies, airborne base station emergency communication typically needs to provide access and service carrying for terminal equipment from different network operators within the emergency communication area, and interconnect with the ground network through backhaul links to complete processes such as terminal equipment authentication, session establishment, and service connection. However, due to constraints such as the load, power consumption, size, and computing power of airborne base stations, a single airborne base station can only support a single frequency band and provide services to terminal equipment from only one network operator. When there are access needs from terminal equipment from multiple network operators in the emergency communication area, it is usually necessary to deploy multiple base stations supporting different network operators to provide access services to terminal equipment from different network operators separately. This approach easily leads to complex emergency deployment and dispatch processes, increased equipment and maintenance investment, and reduced efficiency in on-site communication support and response.

[0004] Therefore, in emergency communication support for airborne base stations, the complex deployment and scheduling process of airborne base stations and the low efficiency of emergency on-site communication support response have become urgent problems that need to be solved. Summary of the Invention

[0005] This application provides an emergency communication method, an airborne base station, and an emergency communication system to address the problems of complex deployment and scheduling processes and low response efficiency of emergency communication support in existing airborne base station emergency communication support systems.

[0006] In a first aspect, this application provides an emergency communication method, the method comprising: When an airborne base station is deployed to a target emergency area, the airborne base station configures and operates multiple virtual sub-base stations based on parameter information from multiple network operators; wherein, each network operator corresponds to one virtual sub-base station, and each virtual sub-base station is configured with network identifiers and radio resource parameters associated with its corresponding network operator; The airborne base station broadcasts access information corresponding to the multiple virtual sub-base stations to terminal devices within the target emergency area; wherein, the access information is used by the terminal devices to access the virtual sub-base stations; The airborne base station receives an access request sent by the target terminal device based on the access information. The access request carries the network identifier of the target network operator to which the target terminal device belongs. The target terminal device is any terminal device within the target emergency area. Based on the access request, the airborne base station determines the target virtual sub-base station corresponding to the target network operator and enables the target terminal device to access the target virtual sub-base station; The airborne base station establishes a target logical tunnel between the target virtual sub-base station and the target core network, and forwards control signaling and user data related to the target terminal device through the target logical tunnel; wherein, the target core network is the core network corresponding to the target network operator.

[0007] In one possible design, the method further includes: Obtain the load information corresponding to the multiple virtual sub-base stations, the load information including the number of terminal devices accessing the base station and service traffic data; Based on the load information of the multiple virtual sub-base stations, the wireless resource parameters of the multiple virtual sub-base stations are dynamically adjusted, wherein the wireless resource parameters include frequency parameters, bandwidth parameters, physical resource block parameters, time slot parameters, and transmit power parameters.

[0008] In one possible design, dynamically adjusting the radio resource parameters of the plurality of virtual sub-base stations based on their load information includes: For each virtual sub-base station, the number of terminal devices accessing the virtual sub-base station is normalized to obtain a first load component characterizing the access load of the virtual sub-base station devices, and the service traffic data corresponding to the virtual sub-base station is normalized to obtain a second load component characterizing the service traffic load of the virtual sub-base station. The first load component and the second load component corresponding to the virtual sub-base station are weighted and fused to obtain the load index of the virtual sub-base station; Based on the load indicators of the multiple virtual sub-base stations, the radio resource parameters of the multiple virtual sub-base stations are dynamically adjusted.

[0009] In one possible design, dynamically adjusting the radio resource parameters of the plurality of virtual sub-base stations based on their load metrics includes: Based on the load indicators of the multiple virtual sub-base stations, determine the load percentage corresponding to each virtual sub-base station; Based on the load percentage corresponding to each of the multiple virtual sub-base stations, the load percentage is corrected according to a preset mapping rule to obtain the target resource allocation ratio for each virtual sub-base station; wherein, the preset mapping rule includes a minimum allocation ratio and a maximum allocation ratio preset for each virtual sub-base station, and the target resource allocation ratio satisfies the constraints of the minimum allocation ratio and the maximum allocation ratio. Based on the target resource allocation ratio of the multiple virtual sub-base stations, the radio resource parameters of the multiple virtual sub-base stations are dynamically adjusted.

[0010] In one possible design, the dynamic adjustment of the radio resource parameters of the plurality of virtual sub-base stations based on the load indicators corresponding to the plurality of virtual sub-base stations includes: Based on the load indicators corresponding to the plurality of virtual sub-base stations, the virtual sub-base station whose load indicator is greater than a first threshold and whose load indicator has the largest difference from the first threshold is determined as the first virtual sub-base station, and the virtual sub-base station whose load indicator is less than a second threshold and whose load indicator has the largest difference from the second threshold is determined as the second virtual sub-base station; wherein, the first threshold is greater than the second threshold; The resource adjustment amount is determined based on the difference between the load index of the first virtual sub-base station and the load index of the second virtual sub-base station; Based on the resource adjustment amount, the radio resource parameters of the first virtual sub-base station are configured to increase, and the radio resource parameters of the second virtual sub-base station are configured to decrease.

[0011] In one possible design, each virtual sub-base station corresponds to a logical tunnel, and the multiple logical tunnels corresponding to the multiple virtual sub-base stations are independent of each other. The logical tunnel is established on the target backhaul link and carried by the target backhaul link; wherein, the target backhaul link is a satellite backhaul link or a microwave backhaul link.

[0012] In one possible design, the method further includes: Obtain the link status information of the target backhaul link, wherein the link status information includes at least one of available bandwidth, latency, packet loss rate, and queue length; When the link status information meets the preset congestion conditions, forwarding control parameters are configured for the multiple logical tunnels respectively. The forwarding control parameters include tunnel rate limiting parameters and / or bandwidth allocation parameters. Based on the forwarding control parameters, when forwarding control signaling and user data through the logical tunnel, the forwarding priority of the control signaling is configured to be higher than that of the user data, and rate-limited forwarding or buffered forwarding is performed on the user data.

[0013] In one possible design, the configuration parameters of the virtual sub-base station are related to the network operator corresponding to the virtual sub-base station, and the configuration parameters of different virtual sub-base stations are different; The configuration parameters include at least one of the following: network identifier, access control parameters, radio resource parameters, and tunnel endpoint parameters of the logical tunnel corresponding to the virtual sub-base station.

[0014] Secondly, this application provides an emergency communication device, comprising: a module for performing the method embodiments of the aforementioned first aspect and any possible design of the first aspect.

[0015] Thirdly, this application provides an airborne base station, including: a memory and at least one processor; The memory stores computer-executed instructions; The at least one processor executes computer execution instructions stored in the memory, causing the at least one processor to perform the method described in the first aspect and various possible designs of the first aspect.

[0016] Fourthly, this application provides an emergency communication system, including the airborne base station described in the third aspect.

[0017] Fifthly, this application provides a computer-readable storage medium storing computer-executable instructions that, when executed, implement the methods described in the first aspect and various possible designs of the first aspect.

[0018] Sixthly, this application provides a computer program product, which includes computer program code that, when run on a computer, causes the computer to implement the methods described in the first aspect and various possible designs of the first aspect.

[0019] In a seventh aspect, this application provides a chip, comprising: an interface circuit and a logic circuit, wherein the interface circuit is configured to receive signals from other chips outside the chip and transmit them to the logic circuit, or to send signals from the logic circuit to other chips outside the chip, and the logic circuit is configured to implement the methods described in the first aspect and various possible designs of the first aspect.

[0020] This application provides an emergency communication method, an airborne base station, and an emergency communication system. In this method, after an airborne base station is deployed to a target emergency area, multiple virtual sub-base stations are configured and operated based on parameter information from multiple network operators. Each network operator corresponds to one virtual sub-base station, and each virtual sub-base station is configured with a network identifier and radio resource parameters associated with its corresponding network operator. The airborne base station then broadcasts access information corresponding to each of the multiple virtual sub-base stations to the target emergency area, enabling target terminal devices to initiate access requests carrying the network identifier of their respective target network operator based on the access information. The airborne base station determines the target virtual sub-base station corresponding to the target network operator based on the network identifier in the access request and enables the terminal device to access the target virtual sub-base station. This achieves attribution identification and access routing for access requests from different network operator terminal devices within the same airborne base station. Simultaneously, the airborne base station establishes a target logical tunnel between the target virtual sub-base station and the target core network, and forwards control signaling and user data related to the target terminal device through the target logical tunnel. This allows the target terminal device's access and service communication to complete authentication, session establishment, and service connection via the target core network. In this application, the access entry points, access routing, and connection paths to the core network for multiple network operators are all completed within the same airborne base station. Furthermore, the access affiliation of terminal devices is automatically matched to the corresponding virtual sub-base station based on the network identifier they carry. Therefore, it is unnecessary to deploy multiple airborne base stations for different network operators at the emergency site to broadcast different networks and connect to different core networks separately. This reduces repetitive deployment and coordination steps such as route planning, takeoff and landing scheduling, airspace coordination, hovering position selection, link commissioning, and operation and maintenance monitoring that are associated with deploying multiple airborne base stations. It also reduces the number of deployment steps and collaborative actions required for emergency communication activation, thereby shortening the activation process time from the arrival of the airborne base station to the accessibility of terminals of multiple network operators and the establishment of service connections, and improving the efficiency of emergency communication support response. Attached Figure Description

[0021] Figure 1 A flowchart illustrating an emergency communication method provided in an embodiment of this application; Figure 2 A flowchart illustrating another emergency communication method provided in an embodiment of this application; Figure 3A flowchart illustrating another emergency communication method provided in an embodiment of this application; Figure 4 A flowchart illustrating yet another emergency communication method provided in this application embodiment; Figure 5 A flowchart illustrating another emergency communication method provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of an airborne base station provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0024] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] In this article, the term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B can exist simultaneously, and B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0026] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0027] In the description of this application, unless otherwise stated, "multiple" and "at least two" mean two or more (including two), and similarly, "multiple groups" and "at least two groups" mean two or more (including two groups).

[0028] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, "connected" or "linked" can refer not only to a physical connection, but also to an electrical connection or a signal connection. For instance, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected. It can also refer to the internal connection between two components. A signal connection can refer not only to a signal connection through a circuit, but also to a signal connection through a medium, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, different technical features in this application can be combined with each other.

[0030] In related technologies, a typical airborne base station usually includes an unmanned aerial vehicle (UAV) platform and an airborne base station communication payload mounted on the UAV platform. During the operation of the airborne base station, the airborne base station transmits synchronization signals and broadcast channels under preset carrier frequency and bandwidth parameters. After the terminal device completes cell search and camping, it initiates an access request. The airborne base station completes radio access control and forwards the control signaling and user data related to the terminal device to the ground network side via the backhaul link, so that the ground network side can complete user authentication, session establishment, and carry service communication.

[0031] However, existing airborne base stations generally suffer from limitations of serving a single frequency band and a single network operator. This is because the air interface side of the airborne base station needs to use spectrum resources licensed by a specific network operator and follow the network planning parameters of that specific network operator (such as network operator identification, network number, tracking area / location area related configurations, etc.), while the core network side needs to complete protocol interoperability and secure access with the core network of that specific network operator (such as interfacing with the authentication and session management related network elements of that specific network operator, establishing bearer connections / secure tunnels to the network side of that specific network operator, and forwarding signaling and data according to its routing and address planning). In the current form factor of airborne base stations, the radio frequency front-end and baseband processing links of airborne base stations are often integrated and fixed according to the frequency band combination, bandwidth capacity and protocol stack configuration of a certain network operator. In actual deployment, they are usually pre-configured to only broadcast the public network signal of a certain network operator and only connect to the core network access point of that network operator. When it is necessary to provide services for the terminal equipment of another network operator, it often involves the reconfiguration of frequency band / carrier and network identifier, as well as independent connection and secure access to the core network of another network operator. In emergency situations, this not only requires additional equipment and configuration procedures, but is also constrained by engineering conditions such as the load, power consumption, size and computing power of airborne base stations, making it difficult to achieve the current solution of a single airborne base station providing parallel services to multiple network operators.

[0032] In actual emergency rescue scenarios, the network operator affiliation of the terminal devices used by disaster victims and on-site personnel is random and unpredictable. If an airborne base station only provides temporary network coverage to a single network operator, only terminal devices belonging to that operator can complete network access and service connections. Terminal devices belonging to other network operators may not be able to achieve effective access even if they are within the temporary network coverage area. To cover terminal devices belonging to different network operators as much as possible, engineering often adopts a parallel deployment of multiple airborne base stations. This involves simultaneously deploying multiple drones, each carrying an airborne base station payload targeting different network operators. These drones broadcast the public network signals of different network operators within the same emergency communication area and connect to the core network of their respective network operators through their backhaul links. While this method theoretically allows for separate access for terminal devices from multiple network operators, it introduces a series of practical problems: First, multiple drones need to separately complete route planning, takeoff and landing scheduling, airspace coordination, hovering position and altitude selection, and interference coordination in overlapping coverage areas, significantly increasing the on-site deployment and scheduling process. Second, the communication payloads of airborne base stations from different network operators typically require independent RF front-ends, baseband processing, and backhaul terminals, leading to redundant investment in equipment configuration and support resources. Furthermore, the increased number of airborne base stations puts pressure on batteries, spare parts, personnel, and maintenance support. Third, when multiple airborne base stations operate in parallel, on-site maintenance typically requires monitoring the operating status, link quality, and alarm information of each airborne base station separately, increasing the complexity of on-site operations and the difficulty of troubleshooting. Fourth, due to the randomness of terminal device distribution, the communication payloads of airborne base stations from some network operators may be under low load while those from other network operators are under high load, making it difficult to allocate airborne spectrum resources, hardware computing resources, and backhaul resources among different network operators as needed, resulting in an overall imbalance in resource utilization.

[0033] In summary, in emergency communication scenarios using airborne base stations, one of the directions that urgently needs improvement is to meet the access needs of different network operator terminal devices and reduce the scheduling and maintenance burden caused by the parallel deployment of multiple airborne base stations, without significantly increasing the number of airborne base stations and the complexity of on-site deployment.

[0034] To address the problems existing in related technologies, this application provides an emergency communication method. This method involves configuring and operating multiple virtual sub-base stations corresponding to different network operators on the same airborne base station, with each network operator corresponding to one virtual sub-base station. Each virtual sub-base station is configured with a network identifier and radio resource parameters associated with its corresponding network operator. Simultaneously, access information corresponding to each of the multiple virtual sub-base stations is broadcast to the target emergency area. Terminal devices initiate access requests carrying the network identifier of their respective network operator based on the access information. The airborne base station determines the corresponding virtual sub-base station based on the terminal device's network identifier and enables the terminal device to access the corresponding virtual sub-base station. A target logical tunnel is established between the virtual sub-base station and the corresponding network operator's core network, and control signaling and user data related to the terminal device are forwarded. This allows for the formation of access organization and core network connection paths for terminal devices from multiple network operators under a single airborne base station deployment, reducing the need to deploy different airborne base stations for different network operators and thus solving the scheduling and maintenance burden caused by the parallel deployment of multiple airborne base stations in related technologies.

[0035] Next, through some specific embodiments and accompanying drawings, we will describe in detail how this application can meet the access needs of different network operator terminal devices and reduce the scheduling and maintenance burden caused by the parallel deployment of multiple airborne base stations without increasing the number of airborne base stations and the complexity of on-site deployment.

[0036] Figure 1 This is a flowchart illustrating an emergency communication method provided in an embodiment of this application. Figure 1 As shown, the emergency communication method provided in this application embodiment specifically includes S101 to S105, and S101 to S105 will be described in detail below.

[0037] It should be noted that the emergency communication method provided in this application is implemented by an airborne base station.

[0038] In practical applications, the emergency command center issues an emergency communication support instruction to the drone. The emergency communication support instruction carries the location information of the target emergency area. Driven by the emergency communication support instruction, the drone flies to the target emergency area and hovers after arriving at the target emergency area. Subsequently, the airborne base station is activated, and the airborne base station executes the method steps shown in S101 to S105.

[0039] S101. When an airborne base station is deployed to the target emergency area, the airborne base station configures and operates multiple virtual sub-base stations based on parameter information from multiple network operators.

[0040] When an airborne base station is deployed to a target emergency area, it can obtain the set of network operators that need to be supported for this emergency communication, and configure and run multiple virtual sub-base stations based on the multiple network operators included in the set.

[0041] It should be noted that the parameter information of each network operator in the network operator set is different. The network operator set can come from a preset configuration file, configuration information issued by the emergency command center, or network operator parameter table stored locally on the airborne base station. This embodiment does not make specific limitations on this.

[0042] Each network operator corresponds to a virtual sub-base station, and each virtual sub-base station is configured with network identifiers and radio resource parameters associated with its corresponding network operator.

[0043] It should be noted that a virtual sub-base station is a logical base station instance running on an airborne base station hardware platform, used to provide access and bearer capabilities associated with its corresponding network operator on the air interface side.

[0044] In some embodiments, the airborne base station includes a multi-band integrated base station unit, which is a radio frequency and processing unit that enables access from multiple network operators. The multi-band integrated base station unit includes a multi-band radio frequency front-end module and a virtualized baseband processing module.

[0045] Among them, the multi-band RF front-end module integrates RF circuits that support the operating frequency bands of multiple network operators' (such as China Mobile, China Telecom, China Unicom, and China Broadcasting Network) wireless communication networks. It can use software-defined radio schemes and / or broadband RF chips, combined with multi-path filtering and switching, to achieve concurrent transmission and reception support for multiple discrete frequency bands, or configurable multiplexing transmission and reception support between multiple discrete frequency bands.

[0046] The virtualized baseband processing module is built on a general-purpose server or a high-performance heterogeneous computing platform to run shared access platform software for multiple network operators. This shared access platform software virtualizes multiple parallel and isolated virtual sub-base stations on unified physical hardware computing resources. Based on this, the configuration and operation of multiple virtual sub-base stations on an airborne base station can be achieved by the shared access platform software creating multiple virtual sub-base stations on the virtualized baseband processing module.

[0047] During the configuration phase of multiple virtual sub-base stations, each virtual sub-base station corresponds to a network operator. The airborne base station configures the network identifier and radio resource parameters associated with its corresponding network operator for each virtual sub-base station.

[0048] The network identifier is used to characterize the network operator identity corresponding to the virtual sub-base station, including but not limited to the network operator identifier, network number, and identification parameters related to cell identifier, tracking area, or location area. Airborne base stations can write the network identifier of the virtual sub-base station into the broadcast and access control configuration of the virtual sub-base station, enabling the virtual sub-base station to complete network affiliation during subsequent operation.

[0049] Radio resource parameters are used to characterize the air interface resources and transmission configurations that the airborne base station configures for the virtual sub-base station.

[0050] In one possible embodiment, the wireless resource parameters include frequency parameters, bandwidth parameters, physical resource block parameters, time slot parameters, and transmit power parameters.

[0051] Specifically, the frequency point parameter is used to indicate the operating carrier frequency or carrier center frequency of the virtual sub-base station, so as to determine the spectrum position of the virtual sub-base station for transmission and reception on the air interface side.

[0052] The bandwidth parameter is used to indicate the channel bandwidth or available spectrum range that the virtual sub-base station can use, thereby limiting the upper limit of the virtual sub-base station's resources in the frequency domain.

[0053] The physical resource block parameter is used to indicate the number, proportion, or quota of physical resource blocks that a virtual sub-base station can occupy or schedule within the bandwidth range, and is used to constrain the allocation method of virtual sub-base stations in the frequency domain resources.

[0054] The time slot parameter is used to indicate the resource configuration method of the virtual sub-base station in the time domain, such as the available time slot set, time slot occupancy ratio, or configuration related to uplink and downlink time slot arrangement, which is used to limit the resource usage range of the virtual sub-base station in the time domain.

[0055] Transmit power parameters are used to indicate the transmit power level or upper limit of the virtual sub-base station to control the wireless transmit strength of the virtual sub-base station and its transmit configuration related to coverage.

[0056] By configuring the radio resource parameters of virtual sub-base stations, airborne base stations can allocate corresponding radio resources and transmission configurations to different virtual sub-base stations within their available radio frequency and baseband resource range to support the access and service carrying of corresponding terminal devices.

[0057] In this embodiment, the airborne base station abstracts available radio frequency capabilities into a multi-band radio frequency resource pool, and allocates available frequency points and bandwidth resources from the radio frequency resource pool to different virtual sub-base stations according to a preset strategy, thereby completing the radio resource parameter configuration of each virtual sub-base station. After completing the network identifier and radio resource parameter configuration of each virtual sub-base station, the airborne base station starts and keeps each virtual sub-base station in an operational state for subsequent access and service carrying processes.

[0058] It should be noted that the preset strategy can be set by the administrator, and this embodiment does not impose any specific limitations on it.

[0059] For example, a preset strategy could be to evenly distribute the bandwidth resources of a multi-band radio frequency resource pool to multiple virtual sub-base stations, or to divide them to multiple virtual sub-base stations according to a preset ratio.

[0060] S102. The airborne base station broadcasts access information corresponding to multiple virtual sub-base stations to terminal devices within the target emergency area.

[0061] After the airborne base station is activated and all virtual sub-base stations are kept operational, the airborne base station controls multiple virtual sub-base stations to broadcast externally so that terminal devices in the target emergency area can discover available networks and access them.

[0062] It should be noted that each virtual sub-base station broadcasts its corresponding network operator's access information, enabling terminal devices belonging to different network operators within the target emergency area to receive and identify access information associated with their respective network operators.

[0063] Specifically, the virtualized baseband processing module can generate corresponding broadcast signals and access information for each virtual sub-base station; the multi-band radio frequency front-end module transmits the access information corresponding to each virtual sub-base station to the air interface side within the corresponding frequency and bandwidth range based on the radio resource parameters of each virtual sub-base station.

[0064] The access information is used for terminal devices to access virtual sub-base stations.

[0065] It should be noted that access information is a set of broadcast information required by the terminal device to perform cell search, camping, and access control. The access information of the virtual sub-base station includes, but is not limited to, the network identifier of the network operator corresponding to the virtual sub-base station, as well as basic broadcast parameter information related to the terminal device's access process.

[0066] The network identifier is used to indicate the network operator identity corresponding to the access information, so that the terminal device can identify and select the network when receiving access information from multiple virtual sub-base stations.

[0067] Basic broadcast parameter information is used to indicate the access control-related parameters required for a terminal device to initiate an access request. Basic broadcast parameter information includes, but is not limited to, cell identifier-related information, synchronization-related information, random access-related configuration parameters, and other system broadcast parameters related to access control; this embodiment does not limit these parameters.

[0068] In this embodiment, after the airborne base station completes the creation and configuration of multiple virtual sub-base stations, it controls the multiple virtual sub-base stations to activate synchronously and start broadcasting their respective access information, so that the terminal devices in the target emergency area can receive the access information corresponding to the multiple virtual sub-base stations respectively, providing the basic conditions for the subsequent terminal devices to initiate access requests based on the access information and complete access.

[0069] S103. The airborne base station receives the access request sent by the target terminal device based on the access information.

[0070] The target terminal device is any terminal device within the target emergency area.

[0071] The target terminal device has subscription information or network affiliation information associated with its home network operator. Therefore, after the airborne base station broadcasts access information corresponding to multiple virtual sub-base stations to the target emergency area, the target terminal device can select the target virtual sub-base station corresponding to its home network operator as the access object based on the received access information and initiate an access request to the airborne base station.

[0072] The access request carries the network identifier of the target network operator to which the target terminal device belongs.

[0073] The access request is used to trigger the access control process between the target terminal device and the target virtual sub-base station.

[0074] Specifically, when a terminal device initiates an access request, it carries the network identifier of the target network operator to which it belongs in the access request, so that the airborne base station can identify the network affiliation of the terminal device and perform subsequent access processing.

[0075] It should be noted that the network identifier of the target network operator is used to identify the target network operator. The airborne base station determines the target network operator to which the target terminal device belongs by parsing the network identifier carried in the access request.

[0076] In some embodiments, the process of a terminal device sending an access request may include sub-processes such as random access, connection establishment, or access confirmation. After receiving the access request on the air interface side, the airborne base station may report the access request to the virtualized baseband processing module for parsing and processing, and extract the network identifier carried in the access request.

[0077] In this embodiment, after receiving an access request from a terminal device, the airborne base station identifies the terminal device as the target terminal device and determines the network identifier carried in the access request sent by the target terminal device as the network identifier of the target network operator, so as to facilitate the subsequent determination of the target virtual sub-base station based on the network identifier of the target network operator and the completion of the access of the target terminal device.

[0078] S104. Based on the access request, the airborne base station determines the target virtual sub-base station corresponding to the target network operator and enables the target terminal equipment to access the target virtual sub-base station.

[0079] It should be noted that the network identifier of each virtual sub-base station is the same as the network identifier of the network operator corresponding to that virtual sub-base station. The airborne base station can match multiple virtual sub-base stations based on the network identifier in the access request, thereby determining the target virtual sub-base station corresponding to the target network operator.

[0080] In some embodiments, the airborne base station maintains a first association table, which is an association table between network identifiers and virtual sub-base stations. The first association table is used to characterize the one-to-one correspondence between the network identifiers of each virtual sub-base station and the virtual sub-base station.

[0081] Specifically, after creating and configuring multiple virtual sub-base stations, the airborne base station writes the network identifier and base station identifier of each virtual sub-base station into a first association table. This allows the airborne base station to query and match the network identifier carried in the access request in the first association table to determine the virtual sub-base station corresponding to the network identifier carried in the access request as the target virtual sub-base station.

[0082] It should be noted that the first association table can be maintained by the centralized control and management unit or by the virtualized baseband processing module; this embodiment does not specifically limit this.

[0083] After the target virtual sub-base station is determined, the airborne base station binds the access process of the target terminal device to the target virtual sub-base station. The target virtual sub-base station then executes the access control process related to the access of the target terminal device, so that the target terminal device can complete the access to the target virtual sub-base station.

[0084] Specifically, the target virtual sub-base station can perform operations such as connection establishment, generation and forwarding of access authentication-related signaling, creation and maintenance of access context, and basic control processing related to service bearing, in order to form an access context for the target terminal device.

[0085] It should be noted that the target terminal device accessing the target virtual sub-base station includes establishing a wireless connection between the target terminal device and the target virtual sub-base station, and establishing an access control context corresponding to the target terminal device on the airborne base station side.

[0086] In this embodiment, the airborne base station can realize access distribution among multiple virtual sub-base stations. That is, based on the network identifier carried in the access request, the access request of the target terminal device is directed to the virtual sub-base station corresponding to its network operator for processing, thereby ensuring that terminal devices belonging to different network operators can access their corresponding virtual sub-base stations respectively, providing the basic conditions for subsequent service connection through the corresponding core network.

[0087] S105. The airborne base station establishes a target logical tunnel between the target virtual sub-base station and the target core network, and forwards control signaling and user data related to the target terminal equipment through the target logical tunnel.

[0088] Among them, the target core network is the core network corresponding to the target network operator.

[0089] After the target terminal device accesses the target virtual sub-base station, the airborne base station needs to enable the target virtual sub-base station to communicate with the target core network so that the terrestrial network can further complete the authentication, session establishment, and service connection processes related to the target terminal device. Therefore, the airborne base station needs to establish a target logical tunnel between the target virtual sub-base station and the target core network, and forward the control signaling and user data related to the target terminal device through the target logical tunnel.

[0090] In one possible embodiment, each virtual sub-base station corresponds to one logical tunnel, and the multiple logical tunnels corresponding to multiple virtual sub-base stations are independent of each other. The logical tunnels are established on the target backhaul link and carried by the target backhaul link.

[0091] It should be noted that the airborne base station establishes logical tunnels for multiple virtual sub-base stations, so that each virtual sub-base station corresponds to a logical tunnel.

[0092] Specifically, after the airborne base station completes the creation and configuration of the virtual sub-base station, it determines the core network access point information (such as core network element address, tunnel peer address, port parameters, authentication parameters, etc.) corresponding to the virtual sub-base station based on the network operator parameters corresponding to the virtual sub-base station, and establishes a logical tunnel between the virtual sub-base station and the core network access point corresponding to the virtual sub-base station.

[0093] In addition, the airborne base station also maintains a second association table, which is an association table between virtual sub-base stations and logical tunnels. The second association table is used to map control signaling and user data from different virtual sub-base stations to their corresponding logical tunnels during subsequent forwarding processes.

[0094] Specifically, different logical tunnels can be configured with independent tunnel endpoint parameters (such as peer address, port number, etc.), independent authentication and security parameters (such as keys, certificates or encryption suites, etc.) and / or independent routing table entries, so that the data forwarding of different virtual sub-base stations can be distinguished from each other at the logical tunnel level.

[0095] Furthermore, the airborne base station forms a bearer channel with the ground network through the target backhaul link, and establishes a logical tunnel on the bearer channel, so that control signaling and user data can be transmitted between the airborne base station and the ground network through the logical tunnel.

[0096] The target backhaul link can be a satellite backhaul link or a microwave backhaul link.

[0097] When the target backhaul link is a satellite backhaul link, the airborne base station can establish a backhaul bearer with the satellite network through the airborne satellite communication terminal and establish a logical tunnel on the backhaul bearer.

[0098] When the target backhaul link is a microwave backhaul link, the airborne base station can establish a backhaul bearer with the ground microwave station through the airborne directional microwave communication terminal, and establish a logical tunnel on the backhaul bearer.

[0099] The target logical tunnel is the logical tunnel corresponding to the target virtual sub-base station among multiple logical tunnels. After the target logical tunnel is established, the airborne base station will forward the control signaling and user data related to the target terminal equipment to the target core network through the target logical tunnel.

[0100] Specifically, control signaling may include control plane signaling related to processes such as terminal device authentication, registration / attachment, session establishment, and bearer establishment; user data may include uplink or downlink service data generated by the terminal device during service communication, which is not limited in this embodiment.

[0101] This application provides an emergency communication method. After an airborne base station is deployed to a target emergency area, multiple virtual sub-base stations are configured and operated based on parameter information from multiple network operators. Each network operator corresponds to one virtual sub-base station, and each virtual sub-base station is configured with a network identifier and radio resource parameters associated with its corresponding network operator. The airborne base station then broadcasts access information corresponding to the multiple virtual sub-base stations to the target emergency area, enabling target terminal devices to initiate access requests carrying the network identifier of their target network operator based on the access information. The airborne base station determines the target virtual sub-base station corresponding to the target network operator based on the network identifier in the access request and enables the terminal device to access the target virtual sub-base station. This completes the identification of the network operator's access requests and access routing within the same airborne base station. Simultaneously, the airborne base station establishes a target logical tunnel between the target virtual sub-base station and the target core network, and forwards control signaling and user data related to the target terminal device through the target logical tunnel. This enables the target terminal device's access and service communication to complete authentication, session establishment, and service connection through the target core network. In this application, the access entry points, access routing, and connection paths to the core network for multiple network operators are all completed within the same airborne base station. Furthermore, the access affiliation of terminal devices is automatically matched to the corresponding virtual sub-base station based on the network identifier they carry. Therefore, it is unnecessary to deploy multiple airborne base stations for different network operators at the emergency site to broadcast different networks and connect to different core networks separately. This reduces repetitive deployment and coordination steps such as route planning, takeoff and landing scheduling, airspace coordination, hovering position selection, link commissioning, and operation and maintenance monitoring that are associated with deploying multiple airborne base stations. It also reduces the number of deployment steps and collaborative actions required for emergency communication activation, thereby shortening the activation process time from the arrival of the airborne base station to the accessibility of terminals of multiple network operators and the establishment of service connections, and improving the efficiency of emergency communication support response.

[0102] In the above embodiments, the airborne base station needs to configure or adjust the radio resource parameters of each virtual sub-base station. The process by which the airborne base station configures or adjusts the radio resource parameters of each virtual sub-base station will be described in detail below.

[0103] Figure 2 A flowchart illustrating another emergency communication method provided in this application embodiment is shown below. Figure 2 As shown, in one possible embodiment, the emergency communication method further includes S201 and S202, which are described in detail below.

[0104] S201. The airborne base station obtains the load information corresponding to multiple virtual sub-base stations.

[0105] The load information includes the number of terminal devices connected and service traffic data.

[0106] It should be noted that multiple virtual sub-base stations operate in parallel within the airborne base station, and each virtual sub-base station corresponds to a different network operator and terminal device group. Therefore, the load levels of multiple virtual sub-base stations may differ. By acquiring the load information of each virtual sub-base station, the airborne base station can provide a basis for subsequent dynamic adjustment of radio resource parameters based on the load information.

[0107] In some embodiments, the airborne base station may count the number of terminal devices accessing each virtual sub-base station within a preset statistical period, and use the statistical results as the number of terminal devices accessing each virtual sub-base station.

[0108] The preset statistical period can be set by the administrator, and this embodiment does not impose specific limitations on it. For example, the preset statistical period is 1 minute.

[0109] Specifically, the airborne base station can determine the number of terminal devices connected to each virtual sub-base station based on the access context information, connection status information, or terminal identifier list maintained by each virtual sub-base station. The number of terminal devices connected to a virtual sub-base station is either the number of terminal devices already connected to the virtual sub-base station or the number of terminal devices in a connected state with the virtual sub-base station; this embodiment does not impose a specific limitation on this.

[0110] In other embodiments, the airborne base station can also predict the number of terminal devices accessing each virtual sub-base station based on the historical terminal device activity status of the target emergency area, and use the prediction result as the number of terminal devices accessing each virtual sub-base station.

[0111] Specifically, the airborne base station can obtain terminal device activity status data of the target emergency area within a historical period. The terminal device activity status data may include the number of historical access terminals, the number of historical access requests, the distribution of historical traffic volume, terminal device stay / leave statistics, and the distribution information of terminal devices among different network operators. This embodiment does not specifically limit this.

[0112] Airborne base stations can construct prediction models based on historical terminal equipment activity status data or adopt preset prediction rules to output the predicted access quantity of each virtual sub-base station at the current prediction time. The prediction model can be a time series prediction model, a regression model, or a rule-based prediction model. The preset prediction rules can be estimation rules based on historical averages, historical peaks, or sliding window averages. This embodiment does not specifically limit these rules.

[0113] It should be noted that when making predictions, airborne base stations can also combine real-time statistical values ​​to correct the prediction results. For example, real-time statistical values ​​and prediction values ​​can be merged according to preset weights to obtain the final prediction results used to characterize the number of terminal devices accessing each virtual sub-base station.

[0114] In some embodiments, the airborne base station may also perform statistics on the service traffic data of each virtual sub-base station within a preset statistical period, and use the statistical results as the service traffic data corresponding to each virtual sub-base station.

[0115] Specifically, the airborne base station can determine the service traffic data corresponding to each virtual sub-base station based on the service carrying statistics, data forwarding statistics, or backhaul traffic statistics of each virtual sub-base station. The service traffic data of the virtual sub-base station is any one of the uplink traffic, downlink traffic, or total uplink and downlink traffic carried by the virtual sub-base station within the statistical period; the service traffic data of the virtual sub-base station can be characterized by data volume, average rate, or peak rate, etc., and this embodiment does not specifically limit this.

[0116] In other embodiments, the airborne base station may also estimate the service traffic data of each virtual sub-base station based on the historical service communication status of the target emergency area, and use the estimation results as the service traffic data corresponding to each virtual sub-base station.

[0117] Specifically, the airborne base station can acquire the service communication status data of the target emergency area in historical time periods. The service communication status data may include historical uplink and downlink throughput, historical data volume statistics, historical service type proportion, historical session number, and historical traffic distribution information corresponding to different network operators. This embodiment does not make specific limitations on this.

[0118] Airborne base stations can construct a traffic estimation model based on historical service communication status data or adopt preset estimation rules to output service traffic estimation data of each virtual sub-base station at the current estimation time. The traffic estimation model can be a time series estimation model, a regression model, or a rule-based estimation model. The preset estimation rules can be estimation rules based on historical averages, historical peaks, or sliding window averages. This embodiment does not specifically limit these rules.

[0119] It should be noted that the number of terminal devices accessing the virtual sub-base station and the service traffic data can be obtained by the airborne base station in real time, or by the centralized control and management unit from the operation monitoring interface of each virtual sub-base station. This embodiment does not make specific limitations on this.

[0120] S202. The airborne base station dynamically adjusts the radio resource parameters of multiple virtual sub-base stations based on the load information of multiple virtual sub-base stations.

[0121] Figure 3 A flowchart illustrating another emergency communication method provided in this application embodiment is shown below. Figure 3As shown, in one possible embodiment, S202 can be implemented by S2021 to S2023, which will be described in detail below.

[0122] S2021. For each virtual sub-base station, the number of terminal devices accessing the virtual sub-base station is normalized to obtain a first load component that characterizes the access load of the virtual sub-base station devices, and the service traffic data corresponding to the virtual sub-base station is normalized to obtain a second load component that characterizes the service traffic load of the virtual sub-base station.

[0123] Since the number of terminal devices accessing each virtual sub-base station has different dimensions and numerical ranges than the service traffic data, the airborne base station normalizes the number of terminal devices accessing the service traffic data to obtain dimensionless first and second load components that can be used for subsequent fusion calculations.

[0124] In some embodiments, for the i-th virtual sub-base station, the airborne base station can calculate the ratio of the number of terminal devices accessing the i-th virtual sub-base station to a first value to obtain the first load component corresponding to the i-th virtual sub-base station, where the first value is the sum of the number of terminal devices accessing all virtual sub-base stations; wherein, the first load component of the virtual sub-base station is used to characterize the proportion of the number of terminal devices accessing the virtual sub-base station to the total number of terminal devices accessing all virtual sub-base stations.

[0125] It should be noted that when the first value is zero, the airborne base station can set the first load component to a preset default value, such as setting the first load component to an average value.

[0126] In some embodiments, for the i-th virtual sub-base station, the airborne base station can calculate the ratio between the service traffic data of the i-th virtual sub-base station and the second value to obtain the second load component corresponding to the i-th virtual sub-base station, where the second value is the sum of the service traffic data of all virtual sub-base stations; for example, the second load component of the virtual sub-base station is used to characterize the proportion of the service traffic data of the virtual sub-base station in the total service traffic data of all virtual sub-base stations.

[0127] It should be noted that when the second value is zero, the airborne base station can set the second load component to a preset default value, such as setting the second load component to an average value.

[0128] S2022. The first load component and the second load component corresponding to the virtual sub-base station are weighted and fused to obtain the load index of the virtual sub-base station.

[0129] Since the first load component and the second load component reflect the load level of the virtual sub-base station from different dimensions, the airborne base station can perform weighted fusion of the first load component and the second load component of the virtual sub-base station to obtain a load index that can comprehensively characterize the overall load level of the virtual sub-base station.

[0130] In some embodiments, the airborne base station can set preset weighting coefficients for the first load component and the second load component respectively, and perform a weighted summation of the first load component and the second load component according to the preset weighting coefficients to obtain the load index of the virtual sub-base station.

[0131] It should be noted that the preset weight coefficient can be a fixed configuration parameter, which can be determined by a preset strategy or by configuration information issued by the emergency command center. This embodiment does not make specific limitations on this.

[0132] For example, when the emergency communication task focuses more on the scale of access users, the weight coefficient of the first load component can be increased; when the emergency communication task focuses more on the amount of service data carried, the weight coefficient of the second load component can be increased. This embodiment does not specifically limit the range of values ​​and adjustment methods of the weight coefficients.

[0133] S2023. Based on the load indicators of multiple virtual sub-base stations, dynamically adjust the radio resource parameters of multiple virtual sub-base stations.

[0134] After the airborne base station obtains the load indicators corresponding to each of the multiple virtual sub-base stations, it can use the load indicators as the basis for resource allocation, determine the target resource configuration relationship of each virtual sub-base station, and update the radio resource parameters of each virtual sub-base station accordingly, so that the multiple virtual sub-base stations can continue to provide access and service carrying within the available resources of the airborne base station.

[0135] In this embodiment, by normalizing the number of terminal devices accessing each virtual sub-base station and the service traffic data, a first load component and a second load component that can respectively characterize the device access load and the service traffic load are obtained. The first load component and the second load component are then weighted and fused to form a comprehensive load index. This enables the airborne base station to uniformly measure and rank the load levels of different virtual sub-base stations on the basis of consistent and comparable dimensions. This provides a clear calculation basis and decision input for the subsequent dynamic adjustment of the radio resource parameters of each virtual sub-base station based on load differences, avoiding resource adjustment deviations caused by relying solely on single load information.

[0136] In the above embodiments, the airborne base station needs to dynamically adjust the radio resource parameters of multiple virtual sub-base stations based on the load indicators of these virtual sub-base stations. The following section details the specific process by which the airborne base station dynamically adjusts the radio resource parameters of multiple virtual sub-base stations based on their load indicators.

[0137] Figure 4 A flowchart illustrating another emergency communication method provided in this application embodiment is shown below. Figure 4 As shown, in one possible embodiment, S2023 can be implemented by Sa1 to Sa3, which will be described in detail below.

[0138] Sa1. Determine the load percentage of each virtual sub-base station based on the load indicators of multiple virtual sub-base stations.

[0139] It should be noted that the load percentage of the virtual sub-base station is used to characterize the proportion of the virtual sub-base station in the overall load of multiple virtual sub-base stations, and can serve as the basis for subsequent resource allocation and parameter adjustment.

[0140] In one possible embodiment, the airborne base station sums the load indicators of multiple virtual sub-base stations to obtain a third value. Then, for any virtual sub-base station, the load indicator of the virtual sub-base station is compared with the third value to obtain the load ratio corresponding to the virtual sub-base station.

[0141] It should be noted that when the third value is zero, the airborne base station can set the load ratio of each virtual sub-base station to a preset default value, such as an equal distribution value. This embodiment does not make specific limitations on this.

[0142] Sa2. Based on the load percentages corresponding to multiple virtual sub-base stations, the load percentages are corrected according to preset mapping rules to obtain the target resource allocation ratio for each virtual sub-base station.

[0143] The preset mapping rules include a minimum allocation ratio and a maximum allocation ratio preset for each virtual sub-base station, and the target resource allocation ratio satisfies the constraints of the minimum allocation ratio and the maximum allocation ratio.

[0144] It should be noted that the load percentage of each virtual sub-base station reflects the relative size of each virtual sub-base station in the overall load. If the load percentage is directly equated with the resource allocation ratio, it may result in some virtual sub-base stations receiving too few or too many resources, thus failing to meet the expected resource allocation constraints. Therefore, the airborne base station can use preset mapping rules to constrain and correct the load percentage in order to obtain the target resource allocation ratio for subsequent wireless resource parameter updates.

[0145] In some embodiments, the airborne base station may preset a minimum allocation ratio and a maximum allocation ratio for each virtual sub-base station to limit the range of resource ratios that can be allocated to the virtual sub-base station.

[0146] Specifically, the minimum allocation ratio is used to indicate the minimum proportion of resources that the virtual sub-base station should obtain when allocating resources, and the maximum allocation ratio is used to indicate the upper limit of the proportion of resources that the virtual sub-base station can obtain when allocating resources. The minimum allocation ratio and the maximum allocation ratio can be determined by a preset strategy, given by a configuration file, or determined by configuration information issued by the emergency command center. This embodiment does not make specific limitations on these.

[0147] In this embodiment, the airborne base station applies minimum and maximum allocation ratio constraints to the target resource allocation ratio of each virtual sub-base station based on the load ratio. Specifically, when the load ratio of a virtual sub-base station is less than its minimum allocation ratio, the target resource allocation ratio of that virtual sub-base station is adjusted to its minimum allocation ratio; when the load ratio of a virtual sub-base station is greater than its maximum allocation ratio, the target resource allocation ratio of that virtual sub-base station is adjusted to its maximum allocation ratio; when the load ratio of a virtual sub-base station falls between the minimum and maximum allocation ratios, the target resource allocation ratio of that virtual sub-base station is maintained at its load ratio or mapped according to a preset function relationship, and the sum of the target resource allocation ratios of all virtual sub-base stations is 100%.

[0148] Sa3. Based on the target resource allocation ratio of multiple virtual sub-base stations, the radio resource parameters of multiple virtual sub-base stations are dynamically adjusted.

[0149] The airborne base station uses the target resource allocation ratio as the basis for updating resource configuration. Within its available radio frequency and baseband resources, it updates the radio resource parameters of each virtual sub-base station so that the resource configuration of each virtual sub-base station corresponds to its target resource allocation ratio.

[0150] In one possible embodiment, the airborne base station can map the target resource allocation ratio to the result of adjusting specific radio resource parameters.

[0151] Specifically, under a preset total resource constraint, the airborne base station can determine the target resource amount that a virtual sub-base station should be allocated according to the target resource allocation ratio of a certain virtual sub-base station, and update the radio resource parameters of the virtual sub-base station accordingly.

[0152] For example, when bandwidth parameters are used as adjustable resources, the airborne base station can determine the target bandwidth for each virtual sub-base station according to the target resource allocation ratio, and accordingly increase or decrease the bandwidth parameters of the corresponding virtual sub-base station; when physical resource block parameters are used as adjustable resources, the airborne base station can determine the physical resource block quota or schedulable upper limit for each virtual sub-base station according to the target resource allocation ratio, and accordingly update the physical resource block parameters of the corresponding virtual sub-base station; when time slot parameters are used as adjustable resources, the airborne base station can determine the available time slot set or time slot occupancy ratio for each virtual sub-base station according to the target resource allocation ratio, and accordingly update the time slot parameters of the corresponding virtual sub-base station; when transmit power parameters are used as adjustable resources, the airborne base station can update the transmit power upper limit or power configuration value of each virtual sub-base station according to the target resource allocation ratio.

[0153] It should be noted that when the airborne base station dynamically adjusts the radio resource parameters, the available resources of the airborne base station are not exceeded by a preset limit as a constraint. After the parameter update is completed, the updated radio resource parameters are written into the operation configuration of the corresponding virtual sub-base station, so that the corresponding virtual sub-base station continues to provide access and service carrying according to the updated radio resource parameters. In addition, the airborne base station repeatedly executes the method steps shown in Sa1 to Sa3 during the operation to achieve continuous adjustment of the radio resource parameters of multiple virtual sub-base stations.

[0154] In this embodiment, the load index of each virtual sub-base station is further converted into a load percentage, and the load percentage is corrected under a preset mapping rule to obtain a target resource allocation ratio that satisfies the minimum and maximum allocation ratio constraints. Then, the radio resource parameters of each virtual sub-base station are dynamically adjusted according to the target resource allocation ratio, so that the airborne base station can form an allocation result that can be directly used for resource configuration updates based on the comprehensive load differences. In addition, upper and lower limit constraints are introduced in the resource allocation process to avoid excessive deviation of resource configuration, thereby providing a clearer and more controllable basis for resource adjustment among multiple virtual sub-base stations.

[0155] Figure 5 This is a flowchart illustrating another emergency communication method provided in an embodiment of this application. Figure 5 As shown, in another possible embodiment, S2023 can be implemented by Sc1 to Sc3, which will be described in detail below.

[0156] Sc1. Based on the load indicators corresponding to multiple virtual sub-base stations, the virtual sub-base station with a load indicator greater than a first threshold and the largest difference between the load indicator and the first threshold is determined as the first virtual sub-base station, and the virtual sub-base station with a load indicator less than a second threshold and the largest difference between the load indicator and the second threshold is determined as the second virtual sub-base station.

[0157] The first threshold is greater than the second threshold.

[0158] It should be noted that the first threshold is used to characterize the judgment condition of high load, and the second threshold is used to characterize the judgment condition of low load. By setting the first threshold and the second threshold, the airborne base station can distinguish between high load candidates and low load candidates at the same time.

[0159] In one possible embodiment, the airborne base station identifies virtual sub-base stations with load indicators greater than a first threshold as high-load candidates, calculates the difference between the load indicator of each high-load candidate and the first threshold, and selects the high-load candidate with the largest difference as the first virtual sub-base station to characterize the virtual sub-base station whose current load exceeds the first threshold by the largest margin.

[0160] Accordingly, the airborne base station will select the virtual sub-base station whose load index is less than the second threshold as the low load candidate, and calculate the difference between the second threshold and the load index of each low load candidate. The low load candidate with the largest difference will be selected as the second virtual sub-base station to represent the virtual sub-base station whose current load is the largest below the second threshold.

[0161] It should be noted that the first threshold and the second threshold can be determined by a preset strategy, given by a configuration file, or determined by configuration information issued by the emergency command center. This embodiment does not impose specific limitations on these.

[0162] Furthermore, when there are no high-load or low-load candidates, the airborne base station may not execute the method steps shown in Sc1 to Sc3, or may use default rules to determine the first and second virtual sub-base stations. For example, the virtual sub-base station with the largest load index may be selected as the first virtual sub-base station, and the virtual sub-base station with the smallest load index may be selected as the second virtual sub-base station. This embodiment does not make specific limitations on this.

[0163] Sc2. Determine the resource adjustment amount based on the difference between the load index of the first virtual sub-base station and the load index of the second virtual sub-base station.

[0164] It should be noted that the load index corresponding to the first virtual sub-base station represents the current load level of the first virtual sub-base station, and the load index corresponding to the second virtual sub-base station represents the current load level of the second virtual sub-base station. The difference between the load indices of the first and second virtual sub-base stations can reflect the load gap between high and low loads. The airborne base station uses the difference between the load indices of the first and second virtual sub-base stations as the basis for adjustment, so that the resource adjustment range can change with the load gap.

[0165] In one possible embodiment, the airborne base station can calculate the load difference between the load index of the first virtual sub-base station and the load index of the second virtual sub-base station, and match the load difference with a preset mapping relationship to determine the resource adjustment amount corresponding to the load difference.

[0166] It should be noted that the preset mapping relationship can be any of the following: linear mapping relationship, segmented mapping relationship, or lookup table mapping relationship. This embodiment does not make any specific limitation on this.

[0167] For example, in a segmented mapping relationship, the airborne base station can compare the load difference with multiple preset interval thresholds and determine different levels of resource adjustment based on the interval into which the load difference falls; in a lookup table mapping relationship, the airborne base station can map the load difference to an entry in a preset lookup table to obtain the corresponding resource adjustment amount. This embodiment does not specifically limit this.

[0168] Resource adjustment amount is used to characterize the adjustment range of wireless resource parameters. Specifically, resource adjustment amount can be at least one of bandwidth adjustment amount, physical resource block adjustment amount, time slot occupancy adjustment amount, and transmit power adjustment amount, or a proportional value / coefficient value used to further calculate the above adjustment amount. This embodiment does not specifically limit this.

[0169] Sc3. Based on the resource adjustment amount, perform an increase configuration on the radio resource parameters of the first virtual sub-base station and a decrease configuration on the radio resource parameters of the second virtual sub-base station.

[0170] Specifically, when the resource adjustment amount represents the bandwidth adjustment amount, the airborne base station can increase the bandwidth adjustment amount on the bandwidth parameters of the first virtual sub-base station and decrease the bandwidth adjustment amount on the bandwidth parameters of the second virtual sub-base station; when the resource adjustment amount represents the physical resource block adjustment amount, the airborne base station can increase the physical resource block quota or schedulable upper limit of the first virtual sub-base station and correspondingly decrease the physical resource block quota or schedulable upper limit of the second virtual sub-base station; when the resource adjustment amount represents the time slot occupancy adjustment amount, the airborne base station can increase the available time slot occupancy ratio of the first virtual sub-base station or expand its available time slot set. The available time slot occupancy ratio of the second virtual sub-base station is reduced accordingly, or its available time slot set is reduced. When the resource adjustment amount represents the transmit power adjustment amount, the airborne base station can increase the transmit power parameter configuration value or power limit of the first virtual sub-base station, and correspondingly reduce the transmit power parameter configuration value or power limit of the second virtual sub-base station. When the resource adjustment amount represents the frequency point adjustment amount or frequency domain resource migration, the airborne base station can add frequency point resources and / or carrier resources for the first virtual sub-base station, and reduce the corresponding frequency point resources and / or carrier resources for the second virtual sub-base station. This embodiment does not specifically limit this.

[0171] It should be noted that when the airborne base station performs configuration additions and reductions, it is constrained by not exceeding the upper limit of the available resources of the airborne base station, and the updated radio resource parameters are verified and corrected within the preset upper and lower limits of parameters. At the same time, the airborne base station can write the updated radio resource parameters into the operation configuration of the first virtual sub-base station and the second virtual sub-base station, and control the first virtual sub-base station and the second virtual sub-base station to continue to provide access and service carrying according to the updated radio resource parameters.

[0172] In this embodiment, by selecting a first virtual sub-base station with a load index exceeding a first threshold and the largest excess from multiple virtual sub-base stations, and a second virtual sub-base station with a load index below a second threshold and the largest deviation, and determining the resource adjustment amount based on the difference in load indices between the first and second virtual sub-base stations, and then increasing the configuration of the radio resource parameters of the first virtual sub-base station and decreasing the configuration of the radio resource parameters of the second virtual sub-base station based on the resource adjustment amount, the airborne base station can quickly locate the virtual sub-base stations that need to be increased or decreased in a threshold-triggered manner when the load difference is significant, and determine the corresponding adjustment range, thereby providing clear selection rules and adjustment basis for resource reconfiguration among multiple virtual sub-base stations.

[0173] In one possible embodiment, when the airborne base station forwards control signaling and user data related to the target terminal device through the target logical tunnel, the emergency communication method further includes Se1 to Se3, which are described in detail below.

[0174] Se1. Obtain the link status information of the target backhaul link. The link status information includes at least one of the following: available bandwidth, latency, packet loss rate, and queue length.

[0175] During the process of an airborne base station carrying multiple target logical tunnels and forwarding control signaling and user data through a target backhaul link, the link quality of the target backhaul link may change due to factors such as satellite channel conditions, microwave link obstruction, and link sharing. Therefore, the airborne base station monitors the link status of the target backhaul link and obtains link status information to characterize the backhaul link status, so as to determine whether congestion exists and take corresponding forwarding control strategies in subsequent steps.

[0176] In some embodiments, the airborne base station can obtain link status information from the backhaul link unit, network interface driver, protocol stack statistics module, or link monitoring module.

[0177] Specifically, available bandwidth is used to characterize the bandwidth capacity of the current target backhaul link that can be used to carry service data. Available bandwidth can be determined by the link rate estimate, throughput statistics, or bandwidth measurement results reported by the backhaul link unit; latency is used to characterize the transmission delay of data on the target backhaul link. Latency can be determined by round-trip delay measurement, heartbeat detection, or timestamp statistics; packet loss rate is used to characterize the proportion of data packets lost during transmission on the target backhaul link. Packet loss rate can be determined by repeat count, packet loss count, or link layer error statistics; queue length is used to characterize the backlog of data packets to be sent in the backhaul side buffer queue. Queue length can be determined by the network sending queue length, buffer occupancy, or number of packets waiting in the queue.

[0178] This embodiment does not specifically limit the statistical period of link status information. Link status information can be obtained periodically according to a preset time window, or it can be triggered when the data transmission volume changes or the link status changes.

[0179] Se2. When the link status information meets the preset congestion conditions, configure forwarding control parameters for multiple logical tunnels respectively. The forwarding control parameters include tunnel rate limiting parameters and / or bandwidth allocation parameters.

[0180] The preset congestion conditions are used to determine whether the available capacity of the target backhaul link is insufficient or the queuing backlog is too high, thereby triggering the configuration of subsequent forwarding control parameters.

[0181] In some embodiments, the preset congestion conditions may include at least one of the following: available bandwidth is lower than a preset bandwidth threshold, latency is higher than a preset latency threshold, packet loss rate is higher than a preset packet loss threshold, and queue length is higher than a preset queue threshold. This embodiment does not specifically limit these conditions.

[0182] Specifically, the tunnel rate limiting parameter of a logical tunnel is used to limit the maximum forwarding rate or maximum output bandwidth of the logical tunnel, and the bandwidth allocation parameter is used to indicate the bandwidth allocation relationship among multiple logical tunnels (such as allocation weight, allocation ratio, or bandwidth upper / lower limit).

[0183] It should be noted that the airborne base station sets different rate limiting parameters and / or bandwidth allocation parameters for different logical tunnels, so that multiple logical tunnels can occupy the target backhaul link resources in a controlled manner according to a preset strategy under congestion conditions. For example, the airborne base station can determine the rate limiting parameters and bandwidth allocation parameters based on the service importance corresponding to each logical tunnel, the load level of the corresponding virtual sub-base station, or the strategy issued by the command center. This embodiment does not make specific limitations in this regard.

[0184] Se3. Based on forwarding control parameters, when forwarding control signaling and user data through logical tunnels, the forwarding priority of control signaling is configured to be higher than that of user data, and rate-limited forwarding or buffered forwarding is performed on user data.

[0185] It should be noted that control signaling is typically used to carry control plane information related to terminal device authentication, session establishment, connection maintenance, etc., while user data is used to carry uplink / downlink service data during terminal device service communication. Therefore, when the target backhaul link is congested, the airborne base station can configure control signaling to have a higher forwarding priority than user data to ensure the continuity of control plane processes.

[0186] In some embodiments, the airborne base station can classify the data to be forwarded, distinguishing between control signaling and user data, and placing them into forwarding queues of different priorities. When scheduling transmission, the airborne base station prioritizes sending data packets in the control signaling queue, and schedules the user data queue only after the control signaling forwarding requirements are met. This embodiment does not specifically limit the specific classification method for control signaling and user data; classification can be based on port, protocol type, tunnel identifier, or preset rules.

[0187] Meanwhile, airborne base stations can perform rate-limited forwarding or buffered forwarding on user data. Specifically, rate-limited forwarding can limit the transmission rate of user data in the corresponding logical tunnel according to tunnel rate-limiting parameters, while buffered forwarding can temporarily store user data in the backhaul buffer queue when the transmission of user data is restricted, and then transmit it when the transmission conditions are met.

[0188] In this embodiment, by acquiring link status information such as available bandwidth, latency, packet loss rate, and queue length on the target backhaul link, and configuring forwarding control parameters such as tunnel rate limiting parameters and / or bandwidth allocation parameters for multiple logical tunnels when the link status information meets preset congestion conditions, the airborne base station can configure the forwarding priority of control signaling to be higher than that of user data when forwarding control signaling and user data through logical tunnels, and perform rate-limited forwarding or buffered forwarding of user data. This enables controlled management and differentiated scheduling of multi-tunnel forwarding in backhaul link congestion scenarios, reduces the impact of congestion on the forwarding process, and ensures the priority forwarding of control signaling.

[0189] In one possible embodiment, the configuration parameters of the virtual sub-base station are related to the network operator corresponding to the virtual sub-base station. Different virtual sub-base stations have different configuration parameters so that multiple virtual sub-base stations running on the same hardware platform can operate according to the network-side configuration and access requirements of their respective network operators.

[0190] The configuration parameters include at least one of the following: network identifier, access control parameters, radio resource parameters, and tunnel endpoint parameters of the logical tunnel corresponding to the virtual sub-base station.

[0191] It should be noted that the different configuration parameters of different virtual sub-base stations mean that at least one of the configuration parameters of different virtual sub-base stations is different.

[0192] Access control parameters are used to characterize the control configuration of the virtual sub-base station for the access process of terminal equipment. For example, they include at least one of the following: random access related configuration parameters, access threshold / admission control parameters, connection establishment related timer parameters, reselection / reconfiguration related control parameters, and other access control broadcast parameters. This embodiment does not specifically limit these parameters.

[0193] Tunnel endpoint parameters are used to characterize the endpoint configuration of a logical tunnel, and may include at least one of the following: tunnel peer address, port parameters, tunnel identification parameters, and authentication / encryption parameters related to tunnel establishment. This embodiment does not specifically limit these parameters.

[0194] In this embodiment, the airborne base station can write the above configuration parameters into the operation configuration of each virtual sub-base station, and generate broadcast information, execute access control procedures, and establish and maintain logical tunnels with the core network of the corresponding network operator according to the corresponding configuration parameters during the operation of the virtual sub-base station, thereby realizing separate access and service carrying of terminal devices of different network operators in the same airborne base station.

[0195] Figure 6 This is a schematic diagram of the structure of an airborne base station provided in an embodiment of this application. Figure 6 As shown, the airborne base station 600 provided in this embodiment can exist independently and is used to implement the operations corresponding to the airborne base station in the above method embodiments.

[0196] The airborne base station 600 may include a transceiver module 601 and a processing module 602. The processing module 602 is used for data processing, and the transceiver module 601 can implement corresponding communication functions. The transceiver module 601 may also be referred to as a communication interface or a communication unit.

[0197] Optionally, the airborne base station 600 may further include a storage unit, which can be used to store instructions and / or data. The processing module 602 can read the instructions and / or data in the storage unit so that the airborne base station 600 can implement the steps implemented by the airborne base station in the aforementioned method embodiments.

[0198] The transceiver module 601 is used to perform the receiving-related operations of the airborne base station in the method embodiment above, and the processing module 602 is used to perform the processing-related operations of the airborne base station in the method embodiment above.

[0199] It should be noted that the airborne base station 600 may include a transmitting module but not a receiving module. Alternatively, the airborne base station 600 may include a receiving module but not a transmitting module. This depends on whether the above-described scheme executed by the airborne base station 600 includes both transmitting and receiving actions.

[0200] As an example, the airborne base station 600 is used to perform the aforementioned... Figure 1 The actions performed by the airborne base station in the illustrated embodiment.

[0201] The airborne base station 600 may include a transceiver module 601 and a processing module 602.

[0202] The processing module 602 is used to configure and run multiple virtual sub-base stations based on parameter information from multiple network operators when an airborne base station is deployed to a target emergency area; wherein each network operator corresponds to one virtual sub-base station, and each virtual sub-base station is configured with network identifiers and radio resource parameters associated with its corresponding network operator; The transceiver module 601 is used to broadcast access information corresponding to multiple virtual sub-base stations to terminal devices within the target emergency area; wherein, the access information is used for terminal devices to access the virtual sub-base stations; The transceiver module 601 is used to receive an access request sent by the target terminal device based on access information. The access request carries the network identifier of the target network operator to which the target terminal device belongs. The target terminal device can be any terminal device within the target emergency area. Processing module 602 is used to determine the target virtual sub-base station corresponding to the target network operator based on the access request, and enable the target terminal device to access the target virtual sub-base station; The processing module 602 is used to establish a target logical tunnel between the target virtual sub-base station and the target core network, and to forward control signaling and user data related to the target terminal equipment through the target logical tunnel; wherein, the target core network is the core network corresponding to the target network operator.

[0203] It should be understood that the corresponding processes performed by each module have been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0204] The processing module 602 in the preceding embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver module 601 can be implemented by a transceiver or transceiver-related circuitry. The transceiver module 601 can also be referred to as a communication unit or communication interface. The storage unit can be implemented by at least one memory.

[0205] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 7As shown, the electronic device 700 provided in this embodiment includes a memory 701 and a processor 702.

[0206] The memory 701 can be a separate physical unit, connected to the processor 702 via a bus 703. Alternatively, the memory 701 and processor 702 can be integrated and implemented in hardware. The memory 701 stores program instructions, which the processor 702 calls to execute the operations performed by the airborne base station in any of the above method embodiments.

[0207] Optionally, when some or all of the methods in the above embodiments are implemented by software, the electronic device 700 may also include only the processor 702. A memory 701 for storing programs is located outside the electronic device 700, and the processor 702 is connected to the memory via circuits / wires to read and execute the programs stored in the memory. The processor 702 may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP. The processor 702 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0208] The memory 701 may include volatile memory, such as random-access memory (RAM); the memory may also include non-volatile memory, such as flash memory, hard disk drive (HDD) or solid-state drive (SSD); the memory may also include a combination of the above types of memory.

[0209] For example, this application provides a chip including: an interface circuit and a logic circuit. The interface circuit is used to receive signals from other chips outside the chip and transmit them to the logic circuit, or to send signals from the logic circuit to other chips outside the chip. The logic circuit is used to perform the operations performed by the airborne base station in the above method embodiments.

[0210] For example, this application provides a computer-readable storage medium storing computer program instructions thereon, which are executed by the processor of an electronic device to cause the electronic device to perform the operations performed by the airborne base station in the above method embodiments.

[0211] For example, this application provides a computer program product that, when run on an electronic device, causes the electronic device to perform the operations performed by the airborne base station in the above method embodiments.

[0212] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An emergency communication method, characterized in that, Applied to airborne base stations, the method includes: When an airborne base station is deployed to a target emergency area, the airborne base station configures and operates multiple virtual sub-base stations based on parameter information from multiple network operators; wherein, each network operator corresponds to one virtual sub-base station, and each virtual sub-base station is configured with network identifiers and radio resource parameters associated with its corresponding network operator; The airborne base station broadcasts access information corresponding to the multiple virtual sub-base stations to terminal devices within the target emergency area; wherein, the access information is used by the terminal devices to access the virtual sub-base stations; The airborne base station receives an access request sent by the target terminal device based on the access information. The access request carries the network identifier of the target network operator to which the target terminal device belongs. The target terminal device is any terminal device within the target emergency area. Based on the access request, the airborne base station determines the target virtual sub-base station corresponding to the target network operator and enables the target terminal device to access the target virtual sub-base station; The airborne base station establishes a target logical tunnel between the target virtual sub-base station and the target core network, and forwards control signaling and user data related to the target terminal device through the target logical tunnel; wherein, the target core network is the core network corresponding to the target network operator.

2. The method according to claim 1, characterized in that, The method further includes: Obtain the load information corresponding to the multiple virtual sub-base stations, the load information including the number of terminal devices accessing the base station and service traffic data; Based on the load information of the multiple virtual sub-base stations, the wireless resource parameters of the multiple virtual sub-base stations are dynamically adjusted, wherein the wireless resource parameters include frequency parameters, bandwidth parameters, physical resource block parameters, time slot parameters, and transmit power parameters.

3. The method according to claim 2, characterized in that, The step of dynamically adjusting the radio resource parameters of the multiple virtual sub-base stations based on their load information includes: For each virtual sub-base station, the number of terminal devices accessing the virtual sub-base station is normalized to obtain a first load component characterizing the access load of the virtual sub-base station devices, and the service traffic data corresponding to the virtual sub-base station is normalized to obtain a second load component characterizing the service traffic load of the virtual sub-base station. The first load component and the second load component corresponding to the virtual sub-base station are weighted and fused to obtain the load index of the virtual sub-base station; Based on the load indicators of the multiple virtual sub-base stations, the radio resource parameters of the multiple virtual sub-base stations are dynamically adjusted.

4. The method according to claim 3, characterized in that, The dynamic adjustment of the radio resource parameters of the multiple virtual sub-base stations based on their load metrics includes: Based on the load indicators of the multiple virtual sub-base stations, determine the load percentage corresponding to each virtual sub-base station; Based on the load percentage corresponding to each of the multiple virtual sub-base stations, the load percentage is corrected according to a preset mapping rule to obtain the target resource allocation ratio for each virtual sub-base station; wherein, the preset mapping rule includes a minimum allocation ratio and a maximum allocation ratio preset for each virtual sub-base station, and the target resource allocation ratio satisfies the constraints of the minimum allocation ratio and the maximum allocation ratio. Based on the target resource allocation ratio of the multiple virtual sub-base stations, the radio resource parameters of the multiple virtual sub-base stations are dynamically adjusted.

5. The method according to claim 3, characterized in that, The step of dynamically adjusting the radio resource parameters of the multiple virtual sub-base stations based on their respective load indicators includes: Based on the load indicators corresponding to the plurality of virtual sub-base stations, the virtual sub-base station whose load indicator is greater than a first threshold and whose load indicator has the largest difference from the first threshold is determined as the first virtual sub-base station, and the virtual sub-base station whose load indicator is less than a second threshold and whose load indicator has the largest difference from the second threshold is determined as the second virtual sub-base station; wherein, the first threshold is greater than the second threshold; The resource adjustment amount is determined based on the difference between the load index of the first virtual sub-base station and the load index of the second virtual sub-base station; Based on the resource adjustment amount, the radio resource parameters of the first virtual sub-base station are configured to increase, and the radio resource parameters of the second virtual sub-base station are configured to decrease.

6. The method according to claim 1, characterized in that, Each virtual sub-base station corresponds to a logical tunnel, and the multiple logical tunnels corresponding to the multiple virtual sub-base stations are independent of each other. The logical tunnel is established on the target backhaul link and carried by the target backhaul link; wherein, the target backhaul link is a satellite backhaul link or a microwave backhaul link.

7. The method according to claim 6, characterized in that, The method further includes: Obtain the link status information of the target backhaul link, wherein the link status information includes at least one of available bandwidth, latency, packet loss rate, and queue length; When the link status information meets the preset congestion conditions, forwarding control parameters are configured for the multiple logical tunnels respectively. The forwarding control parameters include tunnel rate limiting parameters and / or bandwidth allocation parameters. Based on the forwarding control parameters, when forwarding control signaling and user data through the logical tunnel, the forwarding priority of the control signaling is configured to be higher than that of the user data, and rate-limited forwarding or buffered forwarding is performed on the user data.

8. The method according to claim 1, characterized in that, The configuration parameters of the virtual sub-base station are related to the network operator corresponding to the virtual sub-base station, and the configuration parameters of different virtual sub-base stations are different. The configuration parameters include at least one of the following: network identifier, access control parameters, radio resource parameters, and tunnel endpoint parameters of the logical tunnel corresponding to the virtual sub-base station.

9. An airborne base station, characterized in that, include: Memory and at least one processor; The memory stores computer-executed instructions; The at least one processor executes computer execution instructions stored in the memory, causing the at least one processor to perform the method as described in any one of claims 1 to 8.

10. An emergency communication system, characterized in that, Including the airborne base station as described in claim 9.

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