Wireless communication method, device, equipment, medium and program of low-altitude aircraft

Abstract

The embodiment of the application discloses a kind of low altitude aircraft wireless communication method, device, equipment, medium and program, wherein, method includes: obtaining current communication data;In the case where the current communication data is narrowband service data, the narrowband service data is sent by the narrowband main frequency band communication resource of RF circuit;In the case where the current communication data is wideband service data, the wideband sub-band communication resource of RF circuit dynamically allocated by the narrowband main frequency band communication resource of centralized control platform is determined, and the wideband service data is sent by the wideband sub-band communication resource.The technical scheme of the embodiment of the application can improve the safety and reliability of the communication environment of low altitude aircraft, and further improve the efficiency and safety of the process of control and communication of low altitude aircraft in low altitude orbit.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of low-altitude flight technology, and in particular to a wireless communication method, device, electronic device, storage medium and program for low-altitude aircraft. Background Technology

[0002] With the rapid development of the low-altitude economy, low-altitude aircraft are increasingly widely used in fields such as inspection, logistics, passenger transport, security, and surveying. The wireless communication system of low-altitude aircraft is its most important infrastructure, representing a highly specialized wireless communication network signal distribution system. Ensuring that drones can safely fly over densely populated areas and prevent unauthorized control, as well as responding to extreme situations such as power outages and satellite disconnections, are critical issues that urgently need to be addressed.

[0003] Currently, related technologies typically employ traditional communication methods such as 4G / 5G, WiFi (wireless network), radar, and satellite networks to build a network system for managing low-altitude aircraft flying in low-altitude airspace and construct a space-ground infrastructure suitable for low-altitude aircraft.

[0004] In the process of developing this invention, the inventors discovered the following shortcomings in existing technologies: Traditional 4G / 5G cellular network signals are susceptible to interference, making it difficult to guarantee necessary real-time connectivity when low-altitude aircraft share mobile communication networks with traditional users. More importantly, public network communication built on cellular networks carries significant risks of information leakage and remote control, making it difficult to resolve security vulnerabilities. Furthermore, cellular network base stations are primarily deployed for densely populated ground users, but low-altitude aircraft infrastructure is often deployed in sparsely populated areas. Using existing cellular network base stations to build a wireless communication system for low-altitude aircraft results in discontinuous signal coverage along low-altitude flight paths; building new cellular network base stations for the wireless communication system increases the construction cost. Satellite communication is easily affected by weather, suffers from time delays and low uplink transmission efficiency, cannot provide stable high-capacity circuit link communication guarantees, has poor signal stability, and is costly. Moreover, in the event of power outages, fixed-line network outages, or satellite disconnection, existing wireless communication systems built on traditional communication methods are prone to failure, leading to control failures of low-altitude aircraft and making it difficult to maintain their normal operation. Summary of the Invention

[0005] This invention provides a wireless communication method, device, electronic device, storage medium, and program for low-altitude aircraft, which can improve the safety and reliability of the communication environment for low-altitude aircraft, thereby improving the efficiency and safety of the control and communication process of low-altitude aircraft in low-altitude orbit.

[0006] According to one aspect of the present invention, a wireless communication method for a low-altitude aircraft is provided, applied to the low-altitude aircraft, comprising:

[0007] Get current communication data;

[0008] If it is determined that the current communication data is narrowband service data, the narrowband service data is transmitted through the narrowband main frequency band communication resources of the RF circuit;

[0009] If the current communication data is determined to be broadband service data, the broadband sub-band communication resources of the RF circuit are dynamically allocated by the centralized control platform through the narrowband main frequency band communication resources, and the broadband service data is transmitted through the broadband sub-band communication resources.

[0010] According to another aspect of the present invention, a wireless communication method for a low-altitude aircraft, applied to a centralized control platform, is provided, comprising:

[0011] Determine the current communication data of the low-altitude aircraft;

[0012] When it is determined that the current communication data is broadband service data, the broadband sub-band communication resources of the RF circuit are dynamically allocated through the narrowband main frequency band communication resources of the RF circuit;

[0013] The low-altitude aircraft is used to transmit the broadband service data through the broadband sub-band communication resources, and when it is determined that the current communication data is narrowband service data, it transmits the narrowband service data through the narrowband main band communication resources of the RF circuit.

[0014] According to another aspect of the present invention, a wireless communication device for a low-altitude aircraft is provided, characterized in that it comprises:

[0015] The first current communication data acquisition module is used to acquire current communication data;

[0016] A narrowband service data transmission module is used to transmit the narrowband service data through the narrowband main frequency band communication resources of the RF circuit when it is determined that the current communication data is narrowband service data.

[0017] The broadband service data transmission module is used to determine, when the current communication data is determined to be broadband service data, the broadband sub-band communication resources of the RF circuit dynamically allocated by the centralized control platform through the narrowband main frequency band communication resources, and to transmit the broadband service data through the broadband sub-band communication resources.

[0018] According to another aspect of the present invention, a wireless communication device for a low-altitude aircraft is provided, configured on a centralized control platform, comprising:

[0019] The second current communication data acquisition module is used to determine the current communication data of the low-altitude aircraft.

[0020] The sub-band communication resource allocation module is used to dynamically allocate the broadband sub-band communication resources of the RF circuit through the narrowband main band communication resources of the RF circuit when it is determined that the current communication data is broadband service data;

[0021] The low-altitude aircraft is used to transmit the broadband service data through the broadband sub-band communication resources, and when it is determined that the current communication data is narrowband service data, it transmits the narrowband service data through the narrowband main band communication resources of the RF circuit.

[0022] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0023] At least one processor; and

[0024] A memory communicatively connected to the at least one processor; wherein,

[0025] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the wireless communication method for low-altitude aircraft according to any embodiment of the present invention.

[0026] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the wireless communication method for a low-altitude aircraft according to any embodiment of the present invention.

[0027] According to another aspect of the present invention, a computer program product is also provided, comprising a computer program that, when executed by a processor, implements the wireless communication method for low-altitude aircraft as described in any embodiment of the present invention.

[0028] This invention, upon acquiring current communication data, determines that the current communication data is narrowband service data. In this case, the low-altitude aircraft transmits the narrowband service data via the narrowband main frequency band communication resources of the RF circuit. Conversely, if the current communication data is determined to be broadband service data, the centralized control platform dynamically allocates broadband secondary frequency band communication resources of the RF circuit via the narrowband main frequency band communication resources. The low-altitude aircraft then transmits broadband service data via these broadband secondary frequency band communication resources. This addresses the problems of high security risks, insufficient coverage, and susceptibility to failure in extreme conditions inherent in existing wireless communication methods for low-altitude aircraft. It improves the safety and reliability of the communication environment for low-altitude aircraft, thereby enhancing the efficiency and safety of control and communication processes for low-altitude aircraft in low-altitude orbits.

[0029] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a flowchart of a wireless communication method for a low-altitude aircraft provided in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the target time frame structure used in a TDD-CDMA mode according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram illustrating the effect of spectrum resource distribution of an RF circuit according to an embodiment of the present invention;

[0034] Figure 4 This is a flowchart of a wireless communication method for a low-altitude aircraft provided in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of a wireless communication system for a low-altitude aircraft provided in an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram illustrating the effect of a connection area between take-off and landing points provided in an embodiment of the present invention.

[0037] Figure 7 This is a schematic diagram of another wireless communication system for a low-altitude aircraft provided in an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of a wireless communication device for a low-altitude aircraft provided in an embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of another wireless communication device for a low-altitude aircraft provided in an embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] Figure 1 This is a flowchart illustrating a wireless communication method for a low-altitude aircraft according to an embodiment of the present invention. This embodiment is applicable to situations where a low-altitude aircraft selects different frequency bands of communication resources to transmit current communication data based on the type of the current communication data. This method can be executed by the wireless communication device of the low-altitude aircraft. This device can be implemented in software and / or hardware and is generally integrated into an electronic device, which can be a low-altitude aircraft device used in conjunction with a centralized control platform for on-demand allocation of broadband sub-band communication resources. This embodiment of the present invention does not limit the specific type of low-altitude aircraft device. Correspondingly, as... Figure 1 As shown, the method includes the following operations:

[0044] S110, Obtain current communication data.

[0045] The current communication data can be the communication data that the low-altitude aircraft needs to transmit during the execution of low-altitude flight missions. A low-altitude aircraft refers to an aircraft operating in low-altitude airspace (typically below 1000 meters vertically, but can extend to no more than 3000 meters depending on actual needs), primarily used for low-altitude flight activities in various scenarios such as carrying personnel, cargo, and other operations. For example, the types of low-altitude aircraft can include, but are not limited to, helicopters, drones, light aircraft, and special types of aircraft, as long as they have a need for low-altitude flight. This embodiment of the invention does not limit the specific type of low-altitude aircraft.

[0046] During the flight mission, the low-altitude aircraft can receive current communication data in real time. Optionally, the current communication data can be data sent by other low-altitude aircraft or data sent by ground base station equipment. This embodiment of the invention does not limit the sending object, data type, or specific data content of the current communication data.

[0047] S120. Determine whether the current communication data is narrowband service data. If yes, execute S130; otherwise, execute S140.

[0048] Narrowband service data can be a type of service data that does not require a large amount of bandwidth for transmission. For example, narrowband service data can include, but is not limited to, control commands, text data, or meteorological data.

[0049] S130. Determine that the current communication data is narrowband service data, and send the narrowband service data through the narrowband main frequency band communication resources of the RF circuit.

[0050] The narrowband primary frequency band communication resource can be a narrow band of spectrum resources provided by RF (Radio Frequency) circuits, which can be used as the primary frequency band for wireless communication in low-altitude aircraft. RF circuits are circuits that process high-frequency alternating electromagnetic waves and are widely used in the field of wireless communication. RF circuits can provide wireless communication technology through radio frequency communication technology. In this embodiment of the invention, an adaptive narrowband and broadband coordinated wireless communication mode can be realized based on RF circuits.

[0051] Specifically, if the current communication data is determined to be narrowband service data, it means that the current communication data does not require a large amount of bandwidth resources for transmission. In this case, the low-altitude aircraft can directly transmit narrowband service data through the narrowband main frequency band communication resources of the RF circuit.

[0052] Optionally, the narrowband main frequency band communication resources of the RF circuit can be a segment of narrowband spectrum resources dynamically selected from the available spectrum resources provided by the RF circuit.

[0053] S140. Determine that the current communication data is broadband service data, and determine the broadband sub-band communication resources of the RF circuit dynamically allocated by the centralized control platform through the narrowband main frequency band communication resources, and send the broadband service data through the broadband sub-band communication resources.

[0054] Broadband service data can be any type of service data that requires significant bandwidth for transmission. For example, broadband service data may include, but is not limited to, image data or video data. Broadband sub-band communication resources can be a segment of broadband spectrum resources provided by RF circuits, which can be used as a sub-band to participate in the wireless communication process of low-altitude aircraft. The centralized control platform can be a platform for centralized management and control of various low-altitude aircraft within the target flight area. The target flight area can be the area where low-altitude aircraft perform flight operations.

[0055] Specifically, if the current communication data is determined to be broadband service data, it indicates that the current communication data requires a large amount of bandwidth resources for transmission. In this case, the centralized control platform can dynamically select a larger bandwidth spectrum resource as the broadband sub-band communication resource based on the current spectrum resource availability of the RF circuit, and then send the allocation information of the broadband sub-band communication resource to the corresponding low-altitude aircraft via the narrowband main band communication resource. Dynamically selecting a larger bandwidth spectrum resource can be understood as selecting the appropriate spectrum resource on demand. That is, at different times when broadband sub-band communication resources are allocated, the frequency range corresponding to the broadband sub-band communication resource selected by the centralized control platform may be different. After receiving the broadband sub-band communication resource allocated by the centralized control platform, the low-altitude aircraft can then transmit broadband service data through the broadband sub-band communication resource.

[0056] Therefore, during the flight mission of a low-altitude aircraft, a segment of narrowband spectrum is dynamically selected from the available spectrum resources provided by the RF circuit for transmitting narrowband service data, while a segment of broadband spectrum is dynamically selected on demand by the centralized control platform from the available spectrum resources provided by the RF circuit for transmitting broadband service data. This achieves an adaptive narrowband and broadband coordinated wireless communication method. In other words, the low-altitude aircraft can use this adaptive narrowband and broadband coordinated wireless communication method to transmit data on demand during flight missions in the target flight area. Since this adaptive narrowband and broadband coordinated wireless communication method is essentially a wireless communication method without an IP (Internet Protocol) address, external parties cannot intrude into the low-altitude aircraft's wireless network through its IP address to perform destructive actions. This effectively prevents hacker attacks, interception, and physical tampering, thus providing one-to-one video communication and precise monitoring capabilities throughout the entire flight.

[0057] This invention, upon acquiring current communication data, determines that the current communication data is narrowband service data. In this case, the low-altitude aircraft transmits the narrowband service data via the narrowband main frequency band communication resources of the RF circuit. Conversely, if the current communication data is determined to be broadband service data, the centralized control platform dynamically allocates broadband secondary frequency band communication resources of the RF circuit via the narrowband main frequency band communication resources. The low-altitude aircraft then transmits broadband service data via these broadband secondary frequency band communication resources. This addresses the problems of high security risks, insufficient coverage, and susceptibility to failure in extreme conditions inherent in existing wireless communication methods for low-altitude aircraft. It improves the safety and reliability of the communication environment for low-altitude aircraft, thereby enhancing the efficiency and safety of control and communication processes for low-altitude aircraft in low-altitude orbits.

[0058] Based on the above technical solution, in an optional embodiment of the present invention, the centralized control platform can also be used to: determine the data transmission environment of the broadband service data and the target low-altitude aircraft and target base station equipment for transmitting the broadband service data; select the sub-band communication resource from the spectrum resources of the RF circuit according to the data transmission environment of the broadband service data; and send a first configuration instruction of the broadband sub-band communication resource to the target base station equipment; wherein, the target base station equipment is used to: in response to the first configuration instruction of the broadband sub-band communication resource, set a heavy-load frequency band as the broadband sub-band communication resource, and send a second configuration instruction of the broadband sub-band communication resource to the target low-altitude aircraft through the narrowband main frequency band communication resource, so as to instruct the target low-altitude aircraft to set the heavy-load frequency band as the broadband sub-band communication resource in response to the second configuration instruction.

[0059] The target low-altitude aircraft can be any low-altitude aircraft that needs to transmit broadband service data. The target base station equipment can wirelessly communicate with the target low-altitude aircraft to assist it in transmitting broadband service data. The first configuration command and the second configuration command can be configuration commands for configuring broadband sub-band communication resources. The first configuration command is sent from the centralized control platform to the target base station equipment; the second configuration command is sent from the target base station equipment to the target low-altitude aircraft. The heavy-load frequency band can be a radio frequency band that carries a large amount of communication services or data transmission.

[0060] When configuring broadband sub-band communication resources, the centralized control platform can first determine the data transmission environment of broadband service data. Based on this environment, it can dynamically configure broadband sub-band communication resources from the RF circuit's spectrum resources as needed, making the resources more suitable for the data transmission environment and ensuring wireless communication quality. After configuring the broadband sub-band communication resources, the centralized control platform can send a first configuration command to the target base station equipment. Upon receiving the first configuration command, the target base station equipment can respond by setting the heavy-load frequency band in the RF circuit's spectrum resources as the broadband sub-band communication resource, according to the information specified in the command. Correspondingly, the target base station equipment can use the narrowband main frequency band communication resource as the command band and send a second configuration command for the broadband sub-band communication resource to the target low-altitude aircraft. The target low-altitude aircraft, responding to the second configuration command, uses the heavy-load frequency band specified by the centralized control platform as the broadband sub-band communication resource.

[0061] Simultaneously, once the broadband service data transmission task is completed, the centralized control platform can instruct the target base station equipment to shut down the heavy-load channel. Correspondingly, the target base station equipment responds to the instruction sent by the centralized control platform, shuts down the heavy-load channel, and simultaneously notifies the target low-altitude aircraft to shut down the heavy-load channel via narrowband main frequency band communication resources.

[0062] Therefore, it is evident that narrowband primary frequency band communication resources, serving as the command band, are an enhanced version of wireless signals, ensuring the security and reliability of low-altitude aircraft control links and critical data, with a longer transmission distance. Wideband secondary frequency band communication resources, serving as heavy-load bands, are dynamically allocated when high-capacity data transmission is required, such as for video backhaul or large data transfer; when high-capacity data transmission is not needed, they can be put into a waiting state. Narrowband communication resources, as a highly reliable data link, are responsible for defining and controlling the flight path of low-altitude aircraft. Simultaneously, they schedule wideband communication resources and allocate spectrum as needed, realizing a "two-way circuit connection" between the low-altitude aircraft and the base station. This ensures low latency, low power consumption, and high reliability in wireless communication, meeting the personalized wideband data requirements for different types of service data.

[0063] In an optional embodiment of the present invention, the centralized control platform may further be used to: determine the current data propagation conditions of the data transmission environment of the broadband service data; if the current data propagation conditions do not meet the preset data propagation conditions, select low-frequency band resources from the spectrum resources of the RF circuit as the broadband sub-band communication resources; if the current data propagation conditions meet the preset data propagation conditions, select high-frequency band resources from the spectrum resources of the RF circuit as the broadband sub-band communication resources.

[0064] The current data propagation conditions refer to the current data propagation conditions within the data transmission environment. Preset data propagation conditions can be preset and used to determine whether the current data propagation conditions are favorable.

[0065] In a specific example, assuming the current data propagation conditions in the broadband service data transmission environment are poor and do not meet the preset data propagation conditions (e.g., there are obstacles such as walls or trees in the data transmission environment), then low-frequency band resources can be selected from the RF circuit's spectrum resources as broadband sub-band communication resources. Conversely, assuming the current data propagation conditions in the broadband service data transmission environment are good and meet the preset data propagation conditions (e.g., there are no obstacles such as walls or trees in the data transmission environment), then high-frequency band resources can be selected from the RF circuit's spectrum resources as broadband sub-band communication resources.

[0066] In an optional embodiment of the present invention, the narrowband primary frequency band communication resources can transmit the narrowband service data in TDD-CDMA (Time Division Duplex-Code Division Multiple Access) mode; the broadband secondary frequency band communication resources can transmit the broadband service data in TDD-OFDMA (Time Division Duplexing-Orthogonal Frequency Division Multiple Access) mode.

[0067] TDD-CDMA is a communication method that combines Time Division Duplexing (TDD) and Code Division Multiple Access (CDMA) technologies. In TDD mode, uplink and downlink transmissions occur in different time slots. This mode can effectively utilize spectrum resources, performing particularly well in asymmetric service scenarios. TDD distinguishes between uplink and downlink through time division, reducing the complexity of frequency planning. In CDMA mode, each user is assigned a unique spreading code. These spreading codes are used to modulate the user's signal, ensuring that signals from different users do not interfere with each other when transmitted on the same frequency. CDMA improves the capacity and interference resistance of wireless communication systems through spreading technology.

[0068] When TDD-OFDMA combines TDD and OFDMA (Orthogonal Frequency Division Multiple Access), it means using OFDMA technology in a time-division duplex system. Specifically, each time slot is further subdivided into multiple orthogonal subcarriers, each of which can be independently allocated to different users or devices for data transmission. In other words, TDD-OFDMA is a communication technology that combines time-division duplex and orthogonal frequency division multiple access, improving data transmission efficiency and system capacity through time division and orthogonal frequency allocation.

[0069] Figure 2 This is a schematic diagram of a target time frame structure used in a TDD-CDMA mode according to an embodiment of the present invention. In an optional embodiment of the present invention, such as Figure 2 As shown, the target time frame structure used in TDD-CDMA mode can be as follows: the target time frame structure has a duration of 10 milliseconds and includes 8 time slots; among them, 4 time slots in a target time frame structure are uplink time slots, and the other 4 time slots are downlink time slots. The target time frame structure can include a total of 12,800 chips, and each time slot can include 1,600 chips; among them, 16 guard chips are allocated at both ends of each time slot, and 32 beacon chips are allocated in the middle. The maximum number of data packets between the beacon chips and the guard chips can be 768. Correspondingly, each time slot can carry a maximum of 1,536 data packets, and each time slot can provide a communication rate of 9.6 kbps for low-altitude aircraft.

[0070] In a time frame, an uplink time slot can be used to transmit communication data from a base station to a low-altitude aircraft, and a downlink time slot can be used to transmit communication data from a low-altitude aircraft to a base station. Guard chips ensure that signals are not affected by multipath interference during transmission. Beacon chips are basic units used for synchronization and signal identification in communication systems, typically playing a crucial role in wireless communication networks. Beacon chips are fundamental components of beacon signals, used to identify the presence of the network, the operational status of synchronization devices, and to provide communication parameter estimation information.

[0071] In the target time frame structure used in TDD-CDMA mode, each low-altitude aircraft is assigned a 16-chip orthogonal code, meaning a 0 / 1 bit of data is repeated 16 times. A maximum of 16 such orthogonal codes can be superimposed in a time slot; therefore, 16 guard chips can be configured at each end of each time slot. Thus, one time slot can be allocated to 16 low-altitude aircraft. A single target time frame structure in TDD-CDMA can simultaneously connect 64 low-altitude aircraft, allowing for 640 simultaneous connections per second. By introducing guard chips, frequency domain equalization can be achieved without configuring a multipath separator receiver.

[0072] Furthermore, since each time slot in the TDD-CDMA target time frame structure can carry a maximum of 768 + 768 = 1536 data points, one time slot in the TDD-CDMA target time frame structure can provide a communication rate of 1536 / 16 = 96 bits / ms, or 9.6 kbps, to low-altitude aircraft. Under any circumstances, the TDD-CDMA target time frame structure can send 96 bits of instructions to low-altitude aircraft every 10 milliseconds. Correspondingly, each base station device can support a maximum of 16 * 8 = 128 unidirectional circuit link connections or 64 pairs of bidirectional circuit link connections to low-altitude aircraft. Therefore, a continuous tracking and remote control kite string, i.e., a 9.6 kbps circuit link, can be established for low-altitude aircraft, serving as an important means of fully controlling low-altitude aircraft from low-altitude orbit.

[0073] Figure 3 This is a schematic diagram illustrating the effect of spectrum resource distribution in an RF circuit according to an embodiment of the present invention. In an optional embodiment of the present invention, such as... Figure 3As shown, the frequency range of the RF circuit's spectrum resources can be from 300MHz to 6GHz. The narrowband main frequency band communication resources can be dynamically allocated within the frequency range of the RF circuit's spectrum resources using frequency hopping, and the bandwidth of the narrowband main frequency band communication resources can be 1.6MHz. That is, the narrowband main frequency band communication resources can dynamically select 1.6MHz of spectrum resources within the 300MHz-6GHz frequency range using frequency hopping, and transmit narrowband service data using TDD-CDMA mode. Alternatively, the bandwidth of the narrowband main frequency band communication resources can also be 0.8MHz, 0.4MHz, or 0.2MHz, etc. This embodiment of the invention does not limit the specific bandwidth of the narrowband main frequency band communication resources. The bandwidth of the broadband secondary frequency band communication resources can be 5N MHz, where N is a natural number and its maximum value can be 20. For example, the bandwidth of the broadband sub-band communication resource can be 20-100MHz. It is dynamically allocated by the centralized control platform from the 300MHz-6GHz frequency range, bypassing the frequency range occupied by the narrowband main band communication resource, and then transmitted using TDD-OFDMA mode. Optionally, in TDD-OFDMA mode, the broadband sub-band communication resource is not limited to unlicensed spectrum and can be any available spectrum resource between 300MHz and 6GHz.

[0074] like Figure 3 As shown, a low-altitude aircraft can integrate a baseband processor and a MAC (Media Access Control Address, also known as a LAN address) module. The baseband processor, based on narrowband or wideband communication resources, performs tasks such as modulation / demodulation, encoding / decoding, and encryption / decryption of wireless signals. The MAC module can package and unpack data packets for communication. The baseband processor and MAC module interact to collaboratively realize the wireless communication function of the low-altitude aircraft.

[0075] Therefore, it can be seen that the above-mentioned wireless communication methods, which use narrowband TDD-CDMA control and scheduling and wideband TDD-OFDMA on-demand assignment, can ensure low power consumption and robust wireless communication, thereby ensuring the stability of low-altitude aircraft route communication, and are not dependent on the power grid or fixed network, and have low cost.

[0076] Optionally, in addition to the TDD-CDMA mode described above, other CDMA modes such as TDS-CDMA can also be used to transmit narrowband service data for the main frequency band communication resources. This embodiment of the invention does not impose any restrictions on this.

[0077] This invention, upon acquiring current communication data, determines that the current communication data is narrowband service data. In this case, the low-altitude aircraft transmits the narrowband service data via the narrowband main frequency band communication resources of the RF circuit. Conversely, if the current communication data is determined to be broadband service data, the centralized control platform determines the broadband secondary frequency band communication resources of the RF circuit via the narrowband main frequency band communication resources, and the low-altitude aircraft transmits the broadband service data via the broadband secondary frequency band communication resources. This addresses the high security risks and susceptibility to failure in extreme situations inherent in existing wireless communication methods for low-altitude aircraft. It improves the safety and reliability of the communication environment for low-altitude aircraft, thereby enhancing the efficiency and safety of control and communication processes for low-altitude aircraft in low-altitude orbits.

[0078] Figure 4 This is a flowchart illustrating a wireless communication method for a low-altitude aircraft according to an embodiment of the present invention. This embodiment is applicable to situations where a centralized control platform determines the broadband secondary frequency band communication resources of an RF circuit based on the narrowband primary frequency band communication resources of the RF circuit. This method can be executed by the wireless communication device of the low-altitude aircraft. This device can be implemented in software and / or hardware and is generally integrated into an electronic device. This electronic device can integrate a centralized control platform and be used in conjunction with the low-altitude aircraft for transmitting current communication data. This embodiment of the present invention does not limit the specific device type of the electronic device integrating the centralized control platform. Accordingly, as... Figure 4 As shown, the method includes the following operations:

[0079] S410: Determine the current communication data of the low-altitude aircraft.

[0080] S420. When it is determined that the current communication data is broadband service data, the broadband sub-band communication resources of the RF circuit are dynamically allocated through the narrowband main frequency band communication resources of the RF circuit; wherein, the low-altitude aircraft is used to transmit the broadband service data through the broadband sub-band communication resources, and when it is determined that the current communication data is narrowband service data, it transmits the narrowband service data through the narrowband main frequency band communication resources of the RF circuit.

[0081] Optionally, determining the broadband secondary frequency band communication resources of the RF circuit through the narrowband primary frequency band communication resources of the RF circuit includes: determining the data transmission environment of the broadband service data and the target low-altitude aircraft and target base station equipment for transmitting the broadband service data; selecting the secondary frequency band communication resources from the spectrum resources of the RF circuit according to the data transmission environment of the broadband service data; and sending a first configuration command of the broadband secondary frequency band communication resources to the target base station equipment; wherein the target base station equipment is configured to: in response to the first configuration command of the broadband secondary frequency band communication resources, set a heavy-load frequency band as the broadband secondary frequency band communication resource, and send a second configuration command of the broadband secondary frequency band communication resources to the target low-altitude aircraft through the narrowband primary frequency band communication resources, so as to instruct the target low-altitude aircraft to set the heavy-load frequency band as the broadband secondary frequency band communication resource in response to the second configuration command.

[0082] Optionally, selecting the sub-band communication resource from the spectrum resources of the RF circuit based on the data transmission environment of the broadband service data may include: determining the current data propagation conditions of the data transmission environment of the broadband service data; if the current data propagation conditions do not meet preset data propagation conditions, selecting low-frequency band resources from the spectrum resources of the RF circuit as the broadband sub-band communication resource; if the current data propagation conditions meet the preset data propagation conditions, selecting high-frequency band resources from the spectrum resources of the RF circuit as the broadband sub-band communication resource.

[0083] Optionally, the narrowband primary frequency band communication resources use TDD-CDMA mode to transmit the narrowband service data; the broadband secondary frequency band communication resources use TDD-OFDMA mode to transmit the broadband service data.

[0084] Optionally, the target time frame structure adopted by the TDD-CDMA mode is as follows: the duration of the target time frame structure is 10 milliseconds, and it includes 8 time slots; wherein, 4 time slots in one target time frame structure are uplink time slots, and the other 4 time slots are downlink time slots; the target time frame structure includes a total of 12,800 chips, and each time slot includes 1,600 chips; wherein: there are 16 guard chips at both ends of each time slot, and 32 beacon chips in the middle; the maximum number of data packets carried between the beacon chips and the guard chips is 768; each time slot carries a maximum of 1,536 data packets; each time slot provides a communication rate of 9.6 kbps for the low-altitude aircraft.

[0085] Optionally, the frequency range of the spectrum resources of the RF circuit is from 300MHz to 6GHz; the narrowband main frequency band communication resources are dynamically allocated within the frequency range of the spectrum resources of the RF circuit using a frequency hopping method, and the bandwidth of the narrowband main frequency band communication resources is 1.6MHz; the bandwidth of the sub-band communication resources is 5N MHz.

[0086] Optionally, the wireless communication system of the low-altitude aircraft is deployed in the target ground area corresponding to the target flight area; the wireless communication system of the low-altitude aircraft includes multiple base station devices; wherein: the number and ground deployment positions of each base station device in the target ground area are determined based on the take-off and landing point location information of the low-altitude aircraft in the target ground area and the adaptive narrowband and broadband cooperative wireless communication mode; wherein, the adaptive narrowband and broadband cooperative wireless communication mode is the communication mode used when the base station devices communicate with the low-altitude aircraft, and when the base station devices communicate with each other; wherein, the wireless communication system of the low-altitude aircraft composed of each base station device is a wireless communication system without IP address; the adaptive narrowband and broadband cooperative wireless communication mode is a wireless communication mode without IP address.

[0087] This invention, upon acquiring current communication data, determines that the current communication data is narrowband service data. In this case, the low-altitude aircraft transmits the narrowband service data via the narrowband main frequency band communication resources of the RF circuit. Conversely, if the current communication data is determined to be broadband service data, the centralized control platform determines the broadband secondary frequency band communication resources of the RF circuit via the narrowband main frequency band communication resources, and the low-altitude aircraft transmits the broadband service data via the broadband secondary frequency band communication resources. This addresses the problems of high security risks, insufficient coverage, and susceptibility to failure in extreme conditions inherent in existing wireless communication methods for low-altitude aircraft. It improves the safety and reliability of the communication environment for low-altitude aircraft, thereby enhancing the efficiency and safety of control and communication processes for low-altitude aircraft in low-altitude orbits.

[0088] Traditional 4G / 5G cellular networks are primarily designed for terrestrial communication, with an effective coverage altitude of approximately 150 meters. This is insufficient to meet the communication needs of low-altitude airspace above 300 meters, where a three-dimensional air coverage is required. Furthermore, traditional cellular network signals are susceptible to interference and are entirely dependent on power grid infrastructure. Sharing mobile communication networks with traditional customers makes it difficult to guarantee necessary real-time connectivity for low-altitude aircraft. More importantly, public network communication provided by cellular networks carries significant risks of information leakage and remote control.

[0089] To address the shortcomings of existing cellular networks, such as insufficient coverage, low security, and low reliability, this invention also provides a dedicated wireless communication system suitable for low-altitude aircraft. Figure 5 This is a schematic diagram of a wireless communication system for a low-altitude aircraft provided in an embodiment of the present invention, as shown below. Figure 5 As shown, the wireless communication system of the low-altitude aircraft is deployed in the target ground area corresponding to the target flight area; the wireless communication system of the low-altitude aircraft includes multiple base station devices 510; wherein:

[0090] The number and location of each base station device 510 in the target ground area are determined based on the take-off and landing point location information of the low-altitude aircraft in the target ground area and the adaptive narrowband and broadband cooperative wireless communication method. The adaptive narrowband and broadband cooperative wireless communication method is the communication method used when the base station device 510 communicates with the low-altitude aircraft and with each base station device 510. The wireless communication system of the low-altitude aircraft composed of each base station device 510 is a wireless communication system without IP address. The adaptive narrowband and broadband cooperative wireless communication method is a wireless communication method without IP address.

[0091] The target flight area can be the area where low-altitude aircraft operate. The target ground area can be the ground area included in the target flight area. The take-off and landing point of the low-altitude aircraft can be the location used for the take-off and landing of the low-altitude aircraft. Optionally, the take-off and landing point can be set in various environments, such as rooftops, the ground, riverbanks, and lawns.

[0092] The so-called adaptive narrowband and broadband coordinated wireless communication method can be a way to combine broadband communication technology and narrowband communication technology to provide more comprehensive and efficient communication services. Optionally, the adaptive narrowband and broadband coordinated wireless communication method can be: using TDD-CDMA mode to transmit narrowband service data through narrowband main frequency band communication resources; and using TDD-OFDMA mode to transmit broadband service data through broadband secondary frequency band communication resources.

[0093] Before configuring a dedicated wireless communication system for low-altitude aircraft, the deployment location of the system can be selected first, thus determining the area to be configured as the deployment area. This deployment area can be divided into a target flight area and a target ground area. The target flight area is the area where the low-altitude aircraft will perform flight operations, while the target ground area is the corresponding ground area.

[0094] Optionally, based on the target ground area, the takeoff point (referred to as the takeoff point) for the low-altitude aircraft flying from the target ground area to the target flight area, and the landing point (referred to as the landing point) for the low-altitude aircraft flying from the target flight area to the target ground area can be configured to obtain the takeoff and landing point location information of the low-altitude aircraft. It is understood that multiple sets of takeoff and landing point location information can be configured in the target ground area as needed, and the embodiments of the present invention do not limit the number of takeoff and landing point location information configured in the target ground area.

[0095] Low-altitude aircraft also require dedicated wireless modules, such as baseband processors and MAC modules, to communicate with a dedicated wireless communication system. Understandably, once the wireless communication system is configured in the target area, the low-altitude aircraft can take off from its takeoff point in the target ground area and fly within a specific low-altitude orbit to its corresponding landing point in the target ground area. During its flight in the target flight area, the low-altitude aircraft can communicate using an adaptive narrowband and broadband cooperative wireless communication method based on the configured dedicated wireless communication system.

[0096] In this embodiment of the invention, the area in the target flight area where low-altitude aircraft are allowed to fly is referred to as the low-altitude orbit because low-altitude aircraft must fly in the target flight area in accordance with set rules, such as strictly performing flight tasks according to set time, flight path, flight speed, and avoidance rules to avoid collisions at the intersection of flight paths.

[0097] Base station equipment is one of the key components in wireless communication networks, primarily used for communication and data transmission with low-altitude aircraft to achieve wireless communication coverage. The main functions of base station equipment include wireless signal transmission, data transmission, connection and handover management, and spectrum management.

[0098] Understandably, different target wireless communication methods between base station equipment and low-altitude aircraft will result in different spacing requirements between the base station equipment. Therefore, before configuring a dedicated wireless network for low-altitude aircraft within the target flight area, it is necessary to first determine the specific wireless communication method used between each base station equipment and the low-altitude aircraft in the target ground area. Based on this specific wireless communication method, the spacing between different base station equipment can be set. Optionally, to maintain uniformity and communication efficiency, the wireless communication method between each base station equipment can also be the same as the wireless communication method used between the base station equipment and the low-altitude aircraft.

[0099] In an optional embodiment of the present invention, the transmission power of the base station device is less than or equal to a first preset threshold, and the energy consumption of the base station device is less than or equal to a second preset threshold; the base station device is equipped with a disc antenna, the gain of the disc antenna is less than or equal to a third preset threshold, and the disc antenna transmits signals from the target ground area to the target flight area.

[0100] The first, second, and third preset thresholds can be configured according to actual needs. For example, the first preset threshold can be 2 watts, the second preset threshold can be 1.5 degrees, and the third preset threshold can be 3 dB. This embodiment of the invention does not limit the specific values ​​of the first, second, and third preset thresholds.

[0101] To prevent base station equipment malfunctions during power outages, fixed-line outages, and road closures, and to improve the anti-interference capabilities of base station equipment, devices with low transmission power and energy consumption can be used. In a specific example, the base station equipment used to build a wireless communication network for low-altitude aircraft has a transmission power of no more than 2 watts and energy consumption of less than 1.5 kWh / day, supporting long-term independent operation without grid connection. The base station equipment can also be equipped with energy storage and power generation modules. The power generation module automatically converts available resources into electrical energy and stores the converted energy through the energy storage module to power the base station equipment. Because the base station equipment has low energy consumption, the built-in energy storage and power generation modules can meet its power needs without requiring an external power source. Simultaneously, due to the low transmission power of the base station equipment, the power generation requirement of the power generation module is also low. In this scenario, even if the power grid experiences a power outage, the base station equipment can still supply power normally through its own power generation and energy storage modules, thus resolving the equipment shutdown fault caused by the power grid outage. In addition, since the base station equipment does not need to use fixed-line networks to provide wireless communication functions, nor does it use satellite communication to provide a wireless communication network environment, even if there are faults such as fixed-line network outages or satellite connection failures, it will not affect the normal communication function of the wireless communication network of the low-altitude aircraft.

[0102] Optionally, the power generation module can be a solar panel or solar cell, as long as it can generate electricity using natural resources and meet the power supply requirements of the base station equipment. This embodiment of the invention does not limit the specific power generation method of the power generation module.

[0103] The base station equipment can also be equipped with a cone-shaped antenna for transmitting wireless signals, and the gain of the cone-shaped antenna is no greater than 3dB. In order to meet the low-altitude airspace coverage requirements of low-altitude aircraft, the cone-shaped antenna can transmit signals from the target ground area to the target flight area, that is, the antenna aperture of the cone-shaped antenna transmits signals from the ground upwards.

[0104] Therefore, it is evident that the wireless communication network for low-altitude aircraft deployed within the target flight area exhibits a distinctly regional characteristic. It provides a safe and reliable wireless communication environment only for low-altitude aircraft within the target flight area, without needing to consider long distances or the curvature of the Earth. Within the target flight area, air tunnels can be divided in tiers (e.g., every 100 meters), and low-altitude aircraft are required to perform their flight missions within these tunnels according to regulations. Consequently, the wireless communication network for low-altitude aircraft deployed within the target flight area also possesses the linear characteristic of these air tunnels; the wireless signal weakens or even disappears outside of them. Therefore, the coverage target of the wireless communication network for low-altitude aircraft deployed within the target flight area is fundamentally different from the large-area comprehensive coverage target of operators' 5G-A (5G-Advanced, an evolution of fifth-generation mobile communication technology).

[0105] Accordingly, after determining the wireless communication method used when the base station equipment communicates with the low-altitude aircraft, the specific ground layout locations of the base station equipment in the target ground area can be determined based on the pre-configured take-off and landing point location information and the wireless communication method between the low-altitude aircraft and the base station equipment. This allows for the further counting of the number of ground layout locations of the base station equipment in the target ground area, thus completing the configuration process of the wireless private network for the low-altitude aircraft in the target flight area.

[0106] Understandably, once the specific ground layout locations of the base station equipment in the target ground area are determined, the strength of the low-altitude true altitude signal in the target flight area can be determined according to the corresponding ground layout locations of the base station equipment. Generally, the strength of the low-altitude true altitude signal in the target flight area after the base station equipment is deployed according to its specific ground layout locations in the target ground area can meet the requirements of low-altitude aircraft. If, after testing, the strength of the low-altitude true altitude signal in some areas of the target flight area does not meet the requirements of low-altitude aircraft, then the ground layout locations of the base station equipment in those areas of the target flight area can be optimized and updated.

[0107] In an optional embodiment of the present invention, in the adaptive narrowband and broadband coordinated wireless communication method, the narrowband main frequency band communication resources use TDD-CDMA mode to transmit the narrowband service data, and the broadband secondary frequency band communication resources use TDD-OFDMA mode to transmit the broadband service data. Accordingly, the distance limitation range between the ground layout locations of each base station device can be determined according to the target time frame structure adopted by the TDD-CDMA communication method. Then, the number of reference base station devices and their reference ground layout locations matching the take-off and landing point location information in the target ground area can be determined according to the take-off and landing point location information. Furthermore, the number of non-reference base station devices and their ground layout locations in the target ground area can be determined according to the distance limitation range between the ground layout locations of each base station device and the reference ground layout locations of the reference base station devices.

[0108] The distance limit refers to the range of distances between two adjacent base station devices. The reference base station device can be a base station device configured according to the take-off and landing point location information of the low-altitude aircraft. The reference ground layout location can be the layout location of the reference base station device in the target ground area. Non-reference base station devices can be other base station devices in the target ground area besides the reference base station device.

[0109] The target time frame structure used in TDD-CDMA communication can constrain a time slot and the number of low-altitude aircraft that can be controlled within a time frame, thereby constraining the effective communication distance of a time slot. Therefore, different target time frame structures in TDD-CDMA communication result in different distance limits between the ground layout locations of each base station. Thus, it is first necessary to determine and analyze the target time frame structure used in TDD-CDMA communication to determine the distance limits between the ground layout locations of each base station based on the analysis results.

[0110] In an optional embodiment of the present invention, determining the distance range between the ground layout locations of each base station device according to the target time frame structure adopted by the TDD-CDMA communication method may include: determining the number of low-altitude aircraft controlled in a single time slot according to the target time frame structure adopted by the TDD-CDMA communication method; determining the number of single-end protection chips in the time slot according to the number of low-altitude aircraft controlled in the single time slot in the target time frame structure; determining the non-line-of-sight propagation environment transmission distance according to the number of single-end protection chips in the time slot; and determining the distance limitation range between the ground layout locations of each base station device according to the non-line-of-sight propagation environment transmission distance.

[0111] The number of low-altitude aircraft controlled in a single time slot can be the number of low-altitude aircraft that can be controlled in a single time slot within a time frame. The transmission distance in a non-line-of-sight propagation environment can be the farthest transmission distance limited by a time slot in the target time frame structure.

[0112] Optional, such as Figure 2 As shown, the target time frame structure adopted in the TDD-CDMA mode is as follows: the duration of the target time frame structure is 10 milliseconds, and it includes 8 time slots; among them, 4 time slots in one target time frame structure are uplink time slots, and the other 4 time slots are downlink time slots; the target time frame structure includes a total of 12,800 chips, and each time slot includes 1,600 chips; among them, there are 16 guard chips at both ends of each time slot and 32 beacon chips in the middle; the maximum number of data packets carried between the beacon chips and the guard chips is 768; each time slot carries a maximum of 1,536 data packets; each time slot provides a communication rate of 9.6 kbps for the low-altitude aircraft.

[0113] like Figure 2As shown, since the number of single-ended protection chips in a single time slot of the target time frame structure is 16, it can be determined that the number of low-altitude aircraft controlled by a single time slot is 16, meaning that one time slot in the target time frame structure can simultaneously control 16 low-altitude aircraft. After determining the number of single-ended protection chips in the time slot, the transmission distance in the non-line-of-sight (NLS) propagation environment can be determined based on the number of single-ended protection chips in the time slot, and then the distance limit range between the ground layout positions of each base station equipment can be determined based on the NLS propagation environment transmission distance. Continuing with the above example, if the number of single-ended protection chips in the time slot is 16, typically one chip time (1 chip) is equivalent to a wireless signal transmission distance of 234.375m in free space. Therefore, the allowable transmission distance for 16 protection chips is 3750m. Since the speed of light for 16 protection chips can travel 3.75 kilometers, and the current wireless communication system's multipath processing capability can be doubled, the multipath processing capability of the wireless communication system is greater than 5 kilometers. Therefore, the NLS propagation environment transmission distance can be determined to be 5 kilometers. Furthermore, the upper limit of the distance limit between the ground layout locations of each base station is determined based on the transmission distance in the non-line-of-sight propagation environment, and the lower limit of the distance limit between the ground layout locations of each base station is configured as needed. It is understood that the smaller the distance between the base station devices, the higher the reliability of the provided wireless communication environment. However, to save on base station deployment costs, the distance between the base station devices cannot be too small. Optionally, the lower limit of the distance limit between the ground layout locations of each base station device can be determined based on the difference between the transmission distance in the non-line-of-sight propagation environment and a set distance interval (e.g., 1 or 2 kilometers). For example, using the above example, the distance limit between the ground layout locations of each base station device, determined based on the transmission distance in the non-line-of-sight propagation environment, can be between 3 and 5 kilometers.

[0114] Understandably, to meet the takeoff and landing requirements of low-altitude aircraft, a reference base station can be deployed at each takeoff and landing point in the target ground area, based on the aircraft's location information. That is, one reference base station can be configured at each takeoff point, and one at each landing point. If the distance between the takeoff and landing points is too far, base station equipment can be deployed at points in between.

[0115] After determining the number and location of the baseline base station equipment, the ground layout locations of non-base station equipment can be configured within the target ground area based on the area size and the distance limits between the ground layout locations of each base station. The configuration criterion for non-base station equipment is that the straight-line distance to adjacent base station equipment (which can be either non-base station or base station equipment) is within the specified distance limit. Optionally, a planar geometric algorithm can be used to determine the ground layout locations of non-base station equipment in the target ground area based on the distance limits between the ground layout locations of each base station and the baseline ground layout location of the base station equipment. The number of ground layout locations for each non-base station can then be counted to obtain the total number of non-base station equipment.

[0116] In an optional embodiment of the present invention, after determining the number of base station devices and their ground layout locations in the target ground area based on the take-off and landing point location information and the target wireless communication method, the method may further include: connecting the take-off and landing point locations within the target flight area to obtain a take-off and landing point connection line; extending the take-off and landing point connection line as a reference along a predetermined distance in a set direction to obtain a region associated with the take-off and landing point connection line; and optimizing the number of base station devices and their ground layout locations in the target ground area when the airspace signal-to-noise ratio of the region associated with the take-off and landing point connection line is determined to be less than a fourth threshold.

[0117] The set direction can be either the horizontal or vertical direction of the line connecting the takeoff and landing points. The preset distance can be set according to actual needs, for example, it can be 500 meters; however, this embodiment of the invention does not limit the specific value of the preset distance. The associated area of ​​the line connecting the takeoff and landing points can be a three-dimensional area extended by the line connecting the takeoff and landing points. The fourth threshold can be configured according to the wireless communication requirements of the low-altitude aircraft, for example, it can be 20 dB.

[0118] Figure 6 This is a schematic diagram illustrating the effect of a connection area between takeoff and landing points provided in an embodiment of the present invention. In a specific example, such as... Figure 6 As shown, assume point A(x) a ,y a Point B(x) is the takeoff point. b ,y b Taking point A as the landing point, a line is drawn connecting the takeoff and landing points (points A and B) within the target flight area to obtain the takeoff and landing point line. Further, using this takeoff and landing point line as a reference, a preset distance is extended in a set direction to obtain... Figure 6The region associated with the take-off and landing points of the cuboid region shown is as follows. Optionally, the region associated with the take-off and landing points can be a cuboid region constructed with the take-off and landing point line as the center line of the base. The length of the region associated with the take-off and landing points can be the straight-line distance of the take-off and landing point line, the width can be 2000 meters, and the height can be 1000 meters, that is, it extends 1 kilometer horizontally to the left and right and vertically upward from the take-off and landing points.

[0119] To meet the wireless communication requirements of low-altitude aircraft, the airspace signal-to-noise ratio (SNR) of the associated area along the take-off and landing point lines can be configured to be greater than or equal to a fourth threshold, such as a SNR of 20 dB or greater. Therefore, after deploying base station equipment according to the number and location of the equipment in the target ground area, the SNR of each associated area along the take-off and landing point lines can be tested. If the SNR of the associated area is determined to be less than the fourth threshold, it indicates that some factors are affecting the signal quality of the base station equipment. In this case, the number and location of the base station equipment in the target ground area can be optimized. For example, additional base station equipment can be added within areas where the SNR of the associated area along the take-off and landing point lines is less than the fourth threshold, to ensure that the optimized wireless communication network can meet the wireless communication requirements of low-altitude aircraft.

[0120] Figure 7 This is a schematic diagram of another wireless communication system for a low-altitude aircraft provided in an embodiment of the present invention. In an optional embodiment of the present invention, such as... Figure 7 As shown, the wireless communication system for the low-altitude aircraft may further include a centralized control platform 520, with each base station device 510 communicating wirelessly with the centralized control platform 520. The centralized control platform 520 can be used to delineate flight paths for the target flight area, send circuit link control commands to the low-altitude aircraft via the base station devices 510, and continuously track the low-altitude aircraft via the base station devices 510. Optionally, the base station devices 510 may be adaptive 2-watt base station devices. The wireless communication network can provide low-latency two-way communication between the low-altitude aircraft and the centralized control platform 520.

[0121] Optionally, in addition to configuring multiple base station devices in the target ground area, a centralized control platform can also be configured for the wireless private network suitable for low-altitude aircraft. The centralized control platform can communicate with each base station device, delineate flight paths in the target flight area, and continuously track low-altitude aircraft and send various centralized control commands through the base station devices. For example, it can plan the flight paths of low-altitude aircraft and send the results to each aircraft so that they can execute flight missions according to the pre-planned paths. Furthermore, the centralized control platform can also issue various control commands to low-altitude aircraft performing flight missions as needed through each base station device.

[0122] The centralized control platform connects directly to the wireless communication system of the low-altitude aircraft. It can control each network element in the wireless communication system using AI (Artificial Intelligence) computing power, possessing sufficient computing and storage capabilities. For example, the centralized control platform can perform pre-flight path planning for each low-altitude aircraft. Combining geographical, meteorological, and flight regulation constraints of the target flight area, it comprehensively formulates flight paths for each low-altitude aircraft based on takeoff and landing point pairs, and transmits the planned flight paths to the corresponding low-altitude aircraft via the wireless communication system. Optionally, the flight path orbit can be constructed using GNSS (Global Navigation Satellite System) coordinates. Simultaneously, the centralized control platform can also generate takeoff and landing schedules for each low-altitude aircraft and provide real-time positioning and video monitoring functions for the aircraft performing flight missions. The low-altitude aircraft must fly according to the flight path (x, y, z) included in the flight path issued by the centralized control platform. The deviation between the real-time flight path and the preset flight path must not exceed a set deviation threshold, such as 50 meters. When the deviation between the real-time flight path and the preset flight path exceeds the set deviation threshold, the centralized control platform can automatically correct the deviation flight path and, if necessary, land the low-altitude aircraft.

[0123] Optionally, the flight path designated by the centralized control platform for the target flight area can be a one-way constant-speed flight path with the centerline as its trajectory. For example, it can be a flight path composed of circular aerial tubes with a radius of 50 meters, centered at points along the physical flight centerline. This embodiment of the invention does not limit the specific shape of the flight path designated for the target flight area. A one-way constant-speed flight path can be understood as: all low-altitude aircraft in the same direction within the same flight path can fly at the same speed, and overtaking is prohibited.

[0124] Optionally, if multiple base station devices are configured only in the target ground area without a centralized control platform, one or more base station devices with control authority can be used as the centralized control platform to send various centralized control commands to the low-altitude aircraft. This embodiment of the invention does not impose any limitations on this. That is, the centralized control platform can be integrated into the base station devices, or it can function as an independent backend device communicating with both the base station devices and the low-altitude aircraft.

[0125] It should be noted that, Figure 5 and Figure 7 This is merely a schematic diagram of a wireless communication system for low-altitude aircraft. This embodiment of the invention does not limit the number of base station devices in the target ground area or their ground layout location in the wireless communication system of low-altitude aircraft.

[0126] Therefore, the aforementioned dedicated wireless communication system for low-altitude aircraft supports airspace signal coverage for low-altitude aircraft and can provide circuit-link data links. The wireless communication system achieves control and scheduling through TDD-CDMA and TDD-OFDMA communication methods, forming a physically isolated network. This ensures the safety and stability of airway communication, and it is independent of power grids and fixed networks, resulting in low cost. The dedicated wireless communication system, built using adaptive self-organizing network technology, reduces the power consumption of communication equipment and can still guarantee normal operation of airway control even under extreme conditions of power outages, fiber optic cable outages, and road outages. This ensures stable communication for low-altitude aircraft in various extreme environments, improving the safety, reliability, and low cost of low-altitude economic infrastructure.

[0127] This invention, through obtaining the take-off and landing point location information of a low-altitude aircraft in the target ground area corresponding to the target flight area, and determining the target wireless communication method used for wireless communication between each base station device in the target ground area and the low-altitude aircraft, as well as among the base station devices themselves, determines the number and location of base station devices in the target ground area based on the take-off and landing point location information and the target wireless communication method. After determining the number and location of each base station device in the target ground area, each base station device can be deployed at its designated location in the target ground area corresponding to the target flight area, thereby constructing a dedicated wireless communication system for low-altitude aircraft. The wireless communication system constructed by the above-described low-altitude aircraft wireless communication system configuration method can solve the problems of high safety risks, insufficient coverage, and susceptibility to failure under extreme conditions in existing low-altitude aircraft wireless communication systems. It can improve the safety and reliability of the communication environment for low-altitude aircraft, thereby improving the efficiency and safety of the control and communication process of low-altitude aircraft in low-altitude orbit.

[0128] In one example, the wireless communication method for a low-altitude aircraft may include the following operations:

[0129] Step 1: The low-altitude aircraft acquires current communication data.

[0130] Step 2: The low-altitude aircraft determines whether the current communication data is narrowband service data. If so, it sends the narrowband service data through the narrowband main frequency band communication resources of the RF circuit; otherwise, it waits for the centralized control platform to dynamically allocate broadband sub-frequency band communication resources.

[0131] Step 3: If the current communication data is broadband service data, the centralized control platform dynamically allocates broadband sub-band communication resources of the RF circuit through narrowband main frequency band communication resources.

[0132] Step 4: The low-altitude aircraft transmits broadband service data through the broadband sub-band communication resources dynamically allocated by the centralized control platform.

[0133] Optionally, the centralized control platform dynamically allocates broadband secondary frequency band communication resources of the RF circuit through narrowband primary frequency band communication resources. This may include: the centralized control platform determining the data transmission environment of the broadband service data and the target low-altitude aircraft and target base station equipment for transmitting the broadband service data; the centralized control platform selecting the secondary frequency band communication resources from the spectrum resources of the RF circuit according to the data transmission environment of the broadband service data; and the centralized control platform sending a first configuration command for the broadband secondary frequency band communication resources to the target base station equipment. The target base station equipment is configured to: in response to the first configuration command for the broadband secondary frequency band communication resources, set a heavy-load frequency band as the broadband secondary frequency band communication resource, and send a second configuration command for the broadband secondary frequency band communication resources to the target low-altitude aircraft through the narrowband primary frequency band communication resources, to instruct the target low-altitude aircraft to set the heavy-load frequency band as the broadband secondary frequency band communication resource in response to the second configuration command.

[0134] Optionally, the centralized control platform selects the sub-band communication resources from the spectrum resources of the RF circuit according to the data transmission environment of the broadband service data, including: the centralized control platform determines the current data propagation conditions of the data transmission environment of the broadband service data; if the current data propagation conditions do not meet the preset data propagation conditions, the centralized control platform selects low-frequency band resources from the spectrum resources of the RF circuit as the broadband sub-band communication resources; if the current data propagation conditions meet the preset data propagation conditions, the centralized control platform selects high-frequency band resources from the spectrum resources of the RF circuit as the broadband sub-band communication resources.

[0135] Optionally, the narrowband primary frequency band communication resources use TDD-CDMA mode to transmit the narrowband service data; the broadband secondary frequency band communication resources use TDD-OFDMA mode to transmit the broadband service data.

[0136] Optionally, the target time frame structure adopted by the TDD-CDMA mode is as follows: the duration of the target time frame structure is 10 milliseconds, and it includes 8 time slots; wherein, 4 time slots in one target time frame structure are uplink time slots, and the other 4 time slots are downlink time slots; the target time frame structure includes a total of 12,800 chips, and each time slot includes 1,600 chips; wherein: there are 16 guard chips at both ends of each time slot, and 32 beacon chips in the middle; the maximum number of data packets carried between the beacon chips and the guard chips is 768; each time slot carries a maximum of 1,536 data packets; each time slot provides a communication rate of 9.6 kbps for the low-altitude aircraft.

[0137] Optionally, the frequency range of the spectrum resources of the RF circuit is from 300MHz to 6GHz; the narrowband main frequency band communication resources are dynamically allocated within the frequency range of the spectrum resources of the RF circuit using a frequency hopping method, and the bandwidth of the narrowband main frequency band communication resources is 1.6MHz; the bandwidth of the wideband secondary frequency band communication resources is 5N MHz.

[0138] Optionally, the wireless communication system of the low-altitude aircraft is deployed in the target ground area corresponding to the target flight area; the wireless communication system of the low-altitude aircraft includes multiple base station devices; wherein: the number and ground deployment positions of each base station device in the target ground area are determined based on the take-off and landing point location information of the low-altitude aircraft in the target ground area and the adaptive narrowband and broadband cooperative wireless communication mode; wherein, the adaptive narrowband and broadband cooperative wireless communication mode is the communication mode used when the base station devices communicate with the low-altitude aircraft, and when the base station devices communicate with each other; wherein, the wireless communication system of the low-altitude aircraft composed of each base station device is a wireless communication system without IP address; the adaptive narrowband and broadband cooperative wireless communication mode is a wireless communication mode without IP address.

[0139] This invention, upon acquiring current communication data, determines that the current communication data is narrowband service data. In this case, the low-altitude aircraft transmits the narrowband service data via the narrowband main frequency band communication resources of the RF circuit. Conversely, if the current communication data is determined to be broadband service data, the centralized control platform dynamically allocates broadband secondary frequency band communication resources of the RF circuit via the narrowband main frequency band communication resources. The low-altitude aircraft then transmits broadband service data via these broadband secondary frequency band communication resources. This addresses the problems of high security risks, insufficient coverage, and susceptibility to failure in extreme conditions inherent in existing wireless communication methods for low-altitude aircraft. It improves the safety and reliability of the communication environment for low-altitude aircraft, thereby enhancing the efficiency and safety of control and communication processes for low-altitude aircraft in low-altitude orbits.

[0140] The collection, storage, use, processing, transmission, provision, and disclosure of user personal information in this technical solution comply with relevant laws and regulations and do not violate public order and good morals.

[0141] It should be noted that all information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display, data used for analysis, etc.) involved in this disclosure are information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data comply with the relevant laws, regulations and standards of the relevant regions.

[0142] It should be noted that any arrangement or combination of the technical features in the above embodiments also falls within the protection scope of this invention.

[0143] Figure 8 This is a schematic diagram of a wireless communication device for a low-altitude aircraft provided in an embodiment of the present invention, as shown below. Figure 8 As shown, the device includes: a first current communication data acquisition module 810, a narrowband service data transmission module 820, and a broadband service data transmission module 830, wherein:

[0144] The first current communication data acquisition module 810 is used to acquire current communication data;

[0145] Narrowband service data transmission module 820 is used to transmit the narrowband service data through the narrowband main frequency band communication resources of the RF circuit when it is determined that the current communication data is narrowband service data;

[0146] The broadband service data transmission module 830 is used to receive the broadband sub-band communication resources of the RF circuit determined by the centralized control platform through the narrowband main frequency band communication resources when it is determined that the current communication data is broadband service data, and to transmit the broadband service data through the broadband sub-band communication resources.

[0147] This invention, upon acquiring current communication data, determines that the current communication data is narrowband service data. In this case, the low-altitude aircraft transmits the narrowband service data via the narrowband main frequency band communication resources of the RF circuit. Conversely, if the current communication data is determined to be broadband service data, the centralized control platform determines the broadband secondary frequency band communication resources of the RF circuit via the narrowband main frequency band communication resources, and the low-altitude aircraft transmits the broadband service data via the broadband secondary frequency band communication resources. This addresses the high security risks and susceptibility to failure in extreme situations inherent in existing wireless communication methods for low-altitude aircraft. It improves the safety and reliability of the communication environment for low-altitude aircraft, thereby enhancing the efficiency and safety of control and communication processes for low-altitude aircraft in low-altitude orbits.

[0148] Optionally, the centralized control platform is further configured to: determine the data transmission environment of the broadband service data and the target low-altitude aircraft and target base station equipment for transmitting the broadband service data; select the sub-band communication resource from the spectrum resources of the RF circuit according to the data transmission environment of the broadband service data; and send a first configuration instruction for the broadband sub-band communication resource to the target base station equipment; wherein the target base station equipment is configured to: in response to the first configuration instruction for the broadband sub-band communication resource, set a heavy-load frequency band as the broadband sub-band communication resource, and send a second configuration instruction for the broadband sub-band communication resource to the target low-altitude aircraft through the narrowband main frequency band communication resource, so as to instruct the target low-altitude aircraft to set the heavy-load frequency band as the broadband sub-band communication resource in response to the second configuration instruction.

[0149] Optionally, the centralized control platform is further configured to: determine the current data propagation conditions of the data transmission environment of the broadband service data; if the current data propagation conditions do not meet the preset data propagation conditions, select low-frequency band resources from the spectrum resources of the RF circuit as the broadband sub-band communication resources; if the current data propagation conditions meet the preset data propagation conditions, select high-frequency band resources from the spectrum resources of the RF circuit as the broadband sub-band communication resources.

[0150] Optionally, the narrowband primary frequency band communication resources use TDD-CDMA mode to transmit the narrowband service data; the broadband secondary frequency band communication resources use TDD-OFDMA mode to transmit the broadband service data.

[0151] Optionally, the target time frame structure adopted by the TDD-CDMA mode is as follows: the duration of the target time frame structure is 10 milliseconds, and it includes 8 time slots; wherein, 4 time slots in one target time frame structure are uplink time slots, and the other 4 time slots are downlink time slots; the target time frame structure includes a total of 12,800 chips, and each time slot includes 1,600 chips; wherein: there are 16 guard chips at both ends of each time slot, and 32 beacon chips in the middle; the maximum number of data packets carried between the beacon chips and the guard chips is 768; each time slot carries a maximum of 1,536 data packets; each time slot provides a communication rate of 9.6 kbps for the low-altitude aircraft.

[0152] Optionally, the frequency range of the spectrum resources of the RF circuit is from 300MHz to 6GHz; the narrowband main frequency band communication resources are dynamically allocated within the frequency range of the spectrum resources of the RF circuit using a frequency hopping method, and the bandwidth of the narrowband main frequency band communication resources is 1.6MHz; the bandwidth of the wideband secondary frequency band communication resources is 5N MHz.

[0153] Optionally, the wireless communication system of the low-altitude aircraft is deployed in the target ground area corresponding to the target flight area; the wireless communication system of the low-altitude aircraft includes multiple base station devices; wherein: the number and ground deployment positions of each base station device in the target ground area are determined based on the take-off and landing point location information of the low-altitude aircraft in the target ground area and the adaptive narrowband and broadband cooperative wireless communication mode; wherein, the adaptive narrowband and broadband cooperative wireless communication mode is the communication mode used when the base station devices communicate with the low-altitude aircraft, and when the base station devices communicate with each other; wherein, the wireless communication system of the low-altitude aircraft composed of each base station device is a wireless communication system without IP address; the adaptive narrowband and broadband cooperative wireless communication mode is a wireless communication mode without IP address.

[0154] The wireless communication device for the aforementioned low-altitude aircraft can execute the wireless communication method for low-altitude aircraft provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method. Technical details not described in detail in this embodiment can be found in the wireless communication method for low-altitude aircraft provided in any embodiment of the present invention.

[0155] Figure 9 This is a schematic diagram of another wireless communication device for a low-altitude aircraft provided in an embodiment of the present invention, as shown below. Figure 9 As shown, the device includes: a second current communication data acquisition module 910 and a sub-band communication resource allocation module 920, wherein:

[0156] The second current communication data acquisition module 910 is used to determine the current communication data of the low-altitude aircraft.

[0157] The sub-band communication resource allocation module 920 is used to dynamically allocate the broadband sub-band communication resources of the RF circuit through the narrowband main band communication resources of the RF circuit when it is determined that the current communication data is broadband service data.

[0158] The low-altitude aircraft is used to transmit the broadband service data through the broadband sub-band communication resources, and when it is determined that the current communication data is narrowband service data, it transmits the narrowband service data through the narrowband main band communication resources of the RF circuit.

[0159] This invention, upon acquiring current communication data, determines that the current communication data is narrowband service data. In this case, the low-altitude aircraft transmits the narrowband service data via the narrowband main frequency band communication resources of the RF circuit. Conversely, if the current communication data is determined to be broadband service data, the centralized control platform determines the broadband secondary frequency band communication resources of the RF circuit via the narrowband main frequency band communication resources, and the low-altitude aircraft transmits the broadband service data via the broadband secondary frequency band communication resources. This addresses the high security risks and susceptibility to failure in extreme situations inherent in existing wireless communication methods for low-altitude aircraft. It improves the safety and reliability of the communication environment for low-altitude aircraft, thereby enhancing the efficiency and safety of control and communication processes for low-altitude aircraft in low-altitude orbits.

[0160] Optionally, the sub-band communication resource allocation module 920 is further configured to: determine the data transmission environment of the broadband service data and the target low-altitude aircraft and target base station equipment for transmitting the broadband service data; select the sub-band communication resource from the spectrum resources of the RF circuit according to the data transmission environment of the broadband service data; and send a first configuration instruction of the broadband sub-band communication resource to the target base station equipment; wherein the target base station equipment is configured to: in response to the first configuration instruction of the broadband sub-band communication resource, set a heavy-load frequency band as the broadband sub-band communication resource, and send a second configuration instruction of the broadband sub-band communication resource to the target low-altitude aircraft through the narrowband main frequency band communication resource, so as to instruct the target low-altitude aircraft to set the heavy-load frequency band as the broadband sub-band communication resource in response to the second configuration instruction.

[0161] Optionally, the sub-band communication resource allocation module 920 is further configured to: determine the current data propagation conditions of the data transmission environment of the broadband service data; if the current data propagation conditions do not meet the preset data propagation conditions, select low-frequency band resources from the spectrum resources of the RF circuit as the broadband sub-band communication resources; if the current data propagation conditions meet the preset data propagation conditions, select high-frequency band resources from the spectrum resources of the RF circuit as the broadband sub-band communication resources.

[0162] Optionally, the narrowband primary frequency band communication resources use TDD-CDMA mode to transmit the narrowband service data; the broadband secondary frequency band communication resources use TDD-OFDMA mode to transmit the broadband service data.

[0163] Optionally, the target time frame structure adopted by the TDD-CDMA mode is as follows: the duration of the target time frame structure is 10 milliseconds, and it includes 8 time slots; wherein, 4 time slots in one target time frame structure are uplink time slots, and the other 4 time slots are downlink time slots; the target time frame structure includes a total of 12,800 chips, and each time slot includes 1,600 chips; wherein: there are 16 guard chips at both ends of each time slot, and 32 beacon chips in the middle; the maximum number of data packets carried between the beacon chips and the guard chips is 768; each time slot carries a maximum of 1,536 data packets; each time slot provides a communication rate of 9.6 kbps for the low-altitude aircraft.

[0164] Optionally, the frequency range of the spectrum resources of the RF circuit is from 300MHz to 6GHz; the narrowband main frequency band communication resources are dynamically allocated within the frequency range of the spectrum resources of the RF circuit using a frequency hopping method, and the bandwidth of the narrowband main frequency band communication resources is 1.6MHz; the bandwidth of the wideband secondary frequency band communication resources is 5N MHz.

[0165] Optionally, the wireless communication system of the low-altitude aircraft is deployed in the target ground area corresponding to the target flight area; the wireless communication system of the low-altitude aircraft includes multiple base station devices; wherein: the number and ground deployment positions of each base station device in the target ground area are determined based on the take-off and landing point location information of the low-altitude aircraft in the target ground area and the adaptive narrowband and broadband cooperative wireless communication mode; wherein, the adaptive narrowband and broadband cooperative wireless communication mode is the communication mode used when the base station devices communicate with the low-altitude aircraft, and when the base station devices communicate with each other; wherein, the wireless communication system of the low-altitude aircraft composed of each base station device is a wireless communication system without IP address; the adaptive narrowband and broadband cooperative wireless communication mode is a wireless communication mode without IP address.

[0166] The wireless communication device for the aforementioned low-altitude aircraft can execute the wireless communication method for low-altitude aircraft executed by a centralized control platform provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. Technical details not described in detail in this embodiment can be found in the wireless communication method for low-altitude aircraft executed by a centralized control platform provided in any embodiment of the present invention.

[0167] Figure 10 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. Optionally, the electronic device may be a low-altitude aircraft device or a device integrated with a centralized control platform. When the electronic device is a device integrated with a centralized control platform, the device may be a digital computer of various forms, such as a laptop computer, desktop computer, workbench, personal digital assistant, server, blade server, mainframe computer, and other suitable computer, or a mobile device of various forms, such as a personal digital processor, cellular phone, smartphone, wearable device (such as helmet, glasses, watch, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the invention described and / or claimed herein.

[0168] like Figure 10 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0169] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0170] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as wireless communication methods for low-altitude aircraft.

[0171] Optionally, the wireless communication method for low-altitude aircraft can be applied to low-altitude aircraft, specifically including: acquiring current communication data; if the current communication data is determined to be narrowband service data, transmitting the narrowband service data through the narrowband main frequency band communication resources of the RF circuit; if the current communication data is determined to be broadband service data, receiving the broadband secondary frequency band communication resources of the RF circuit determined by the centralized control platform through the narrowband main frequency band communication resources, and transmitting the broadband service data through the broadband secondary frequency band communication resources.

[0172] Optionally, the wireless communication method for low-altitude aircraft can also be applied to a centralized control platform, specifically including: determining the current communication data of the low-altitude aircraft; if the current communication data is determined to be broadband service data, dynamically allocating the broadband sub-band communication resources of the RF circuit through the narrowband main frequency band communication resources of the RF circuit; wherein the low-altitude aircraft is used to transmit the broadband service data through the broadband sub-band communication resources, and if the current communication data is determined to be narrowband service data, transmit the narrowband service data through the narrowband main frequency band communication resources of the RF circuit.

[0173] In some embodiments, the wireless communication method for a low-altitude aircraft can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the wireless communication method for a low-altitude aircraft described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the wireless communication method for a low-altitude aircraft by any other suitable means (e.g., by means of firmware).

[0174] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0175] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0176] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0177] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0178] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0179] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0180] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0181] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A wireless communication method for a low-altitude aircraft, characterized in that, Applications in low-altitude aircraft, including: Get current communication data; If it is determined that the current communication data is narrowband service data, the narrowband service data is transmitted through the narrowband main frequency band communication resources of the radio frequency (RF) circuit; If the current communication data is determined to be broadband service data, the broadband sub-band communication resources of the RF circuit are dynamically allocated by the centralized control platform through the narrowband main frequency band communication resources, and the broadband service data is transmitted through the broadband sub-band communication resources.

2. The method according to claim 1, characterized in that, The centralized control platform is also used for: Determine the data transmission environment of the broadband service data, as well as the target low-altitude aircraft and target base station equipment used to transmit the broadband service data; The sub-band communication resources are selected from the spectrum resources of the RF circuit according to the data transmission environment of the broadband service data. Send a first configuration command for the broadband sub-band communication resources to the target base station equipment; The target base station equipment is configured to: in response to a first configuration instruction of the broadband sub-band communication resource, set a heavy-load frequency band as the broadband sub-band communication resource, and send a second configuration instruction of the broadband sub-band communication resource to the target low-altitude aircraft through the narrowband main frequency band communication resource, so as to instruct the target low-altitude aircraft to set the heavy-load frequency band as the broadband sub-band communication resource in response to the second configuration instruction.

3. The method according to claim 2, characterized in that, The centralized control platform is also used for: Determine the current data propagation conditions of the data transmission environment for the broadband service data; If it is determined that the current data propagation conditions do not meet the preset data propagation conditions, a low-frequency band resource is selected from the spectrum resources of the RF circuit as the broadband sub-band communication resource; If the current data propagation conditions are satisfied with the preset data propagation conditions, high-frequency band resources are selected from the spectrum resources of the RF circuit as the broadband sub-band communication resources.

4. The method according to any one of claims 1-3, characterized in that: The narrowband main frequency band communication resources use TDD-CDMA mode to transmit the narrowband service data; The broadband sub-band communication resources use TDD-OFDMA mode to transmit the broadband service data.

5. The method according to claim 4, characterized in that, The target time frame structure adopted by the TDD-CDMA mode is as follows: The target time frame structure has a duration of 10 milliseconds and includes 8 time slots; wherein, 4 time slots in one target time frame structure are uplink time slots and the other 4 time slots are downlink time slots; The target time frame structure comprises a total of 12,800 chips, with each time slot containing 1,600 chips; wherein: Each time slot has 16 guard chips at both ends and 32 beacon chips in the middle; the beacon chips and guard chips can carry a maximum of 768 data points; each time slot can carry a maximum of 1536 data points; each time slot provides a communication rate of 9.6 kbps for the low-altitude aircraft.

6. The method according to claim 5, characterized in that: The frequency range of the spectrum resources of the RF circuit is from 300MHz to 6GHz; The narrowband main frequency band communication resources are dynamically allocated within the frequency range of the RF circuit's spectrum resources using a frequency hopping method, and the bandwidth of the narrowband main frequency band communication resources is 1.6MHz; The bandwidth of the broadband sub-band communication resources is 5N MHz.

7. The method according to claim 1, characterized in that: The wireless communication system of the low-altitude aircraft is deployed in the target ground area corresponding to the target flight area; the wireless communication system of the low-altitude aircraft includes multiple base station devices; wherein: The number and location of each base station device in the target ground area are determined based on the take-off and landing point location information of the low-altitude aircraft in the target ground area and the adaptive narrowband and broadband cooperative wireless communication method; wherein, the adaptive narrowband and broadband cooperative wireless communication method is the communication method used when the base station devices communicate with the low-altitude aircraft and with each of the base station devices. The wireless communication system of the low-altitude aircraft composed of the base station equipment is an IP address-free wireless communication system; the adaptive narrowband and broadband coordinated wireless communication method is an IP address-free wireless communication method.

8. A wireless communication method for a low-altitude aircraft, characterized in that, Applications in centralized control platforms include: Determine the current communication data of the low-altitude aircraft; When it is determined that the current communication data is broadband service data, the broadband sub-band communication resources of the RF circuit are dynamically allocated through the narrowband main frequency band communication resources of the RF circuit; The low-altitude aircraft is used to transmit the broadband service data through the broadband sub-band communication resources, and when it is determined that the current communication data is narrowband service data, it transmits the narrowband service data through the narrowband main band communication resources of the RF circuit.

9. A wireless communication device for a low-altitude aircraft, configured on the low-altitude aircraft, characterized in that, include: The first current communication data acquisition module is used to acquire current communication data; A narrowband service data transmission module is used to transmit the narrowband service data through the narrowband main frequency band communication resources of the RF circuit when it is determined that the current communication data is narrowband service data. The broadband service data transmission module is used to determine, when the current communication data is determined to be broadband service data, the broadband sub-band communication resources of the RF circuit dynamically allocated by the centralized control platform through the narrowband main frequency band communication resources, and to transmit the broadband service data through the broadband sub-band communication resources.

10. A wireless communication device for a low-altitude aircraft, characterized in that, Configured on a centralized control platform, including: The second current communication data acquisition module is used to determine the current communication data of the low-altitude aircraft. The sub-band communication resource allocation module is used to dynamically allocate the broadband sub-band communication resources of the RF circuit through the narrowband main band communication resources of the RF circuit when it is determined that the current communication data is broadband service data; The low-altitude aircraft is used to transmit the broadband service data through the broadband sub-band communication resources, and when it is determined that the current communication data is narrowband service data, it transmits the narrowband service data through the narrowband main band communication resources of the RF circuit.

11. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that is executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the wireless communication method of the low-altitude aircraft according to any one of claims 1-7, or to perform the wireless communication method of the low-altitude aircraft according to claim 8.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the wireless communication method of the low-altitude aircraft according to any one of claims 1-7, or to execute the wireless communication method of the low-altitude aircraft according to claim 8.

13. A computer program product comprising a computer program / instructions, wherein, When the computer program / instruction is executed by the processor, it implements the wireless communication method of the low-altitude aircraft as described in any one of claims 1-7, or performs the wireless communication method of the low-altitude aircraft as described in claim 8.

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