Low-altitude communication method and device, communication equipment, readable storage medium and program product

Abstract

The invention relates to a low-altitude communication method and device, communication equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: a first cluster master base station receives an inter-cluster switching request forwarded by a second cluster master base station; under the condition that the first cluster master base station does not meet the service requirement corresponding to the inter-cluster switching request, a target cluster slave base station is controlled to send a low-altitude service beam for the user equipment, and the target cluster slave base station is a cluster slave base station meeting the service requirement in a low-altitude cluster to which the first cluster master base station belongs; and sending first base station information of the first cluster master base station and second base station information of the target cluster slave base station to the user equipment through the second cluster master base station, the first base station information being used for instructing the user equipment to access a low-altitude control beam sent by the first cluster master base station to perform control signal communication. The second base station information is used for indicating the user equipment to access a low-altitude service beam for service data communication. By adopting the method, the low-altitude communication performance can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to low-altitude communication methods, devices, communication equipment, systems, computer-readable storage media, and computer program products. Background Art

[0002] With the rapid development of wireless communication technology, the joint networking mode of low-altitude networks and ground networks has not only broadened the coverage of communication networks, but also significantly improved the flexibility and diversity of communication services. In the scenario of joint networking of low-altitude networks and ground networks, low-altitude terminals such as drones, low-altitude aircraft and other user equipment are not only used in logistics distribution, but also in meteorological monitoring, agricultural inspections, emergency communications and rescue operations. These applications not only improve operational efficiency, but also reduce labor costs, which is of great significance to promoting social progress and economic development.

[0003] However, there are conflicts and interferences between ground services and low-altitude services in terms of spectrum resources, communication channels, etc., which will cause a significant decline in the quality of low-altitude network signals, affect data transmission rate and reliability, and reduce low-altitude communication performance. Summary of the invention

[0004] Based on this, it is necessary to provide low-altitude communication methods, devices, communication equipment, systems, computer-readable storage media and computer program products that can improve low-altitude communication performance in response to the above-mentioned technical problems.

[0005] In a first aspect, the present application provides a low-altitude communication method, which is applied to a first cluster of primary base stations, including:

[0006] receiving an inter-cluster handover request forwarded by the second cluster master base station, where the inter-cluster handover request is sent by the user equipment to the second cluster master base station;

[0007] When the first cluster master base station itself does not meet the service requirements corresponding to the inter-cluster handover request, the target cluster slave base station is controlled to send a low-altitude service beam for the user equipment, and the target cluster slave base station is a cluster slave base station that meets the service requirements in the low-altitude cluster to which the first cluster master base station belongs;

[0008] The first base station information of the first cluster main base station and the second base station information of the target cluster slave base station are sent to the user equipment through the second cluster main base station. The first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication, and the second base station information is used to instruct the user equipment to access the low-altitude service beam for service data communication.

[0009] In a second aspect, the present application further provides a low-altitude communication device, applied to a first cluster of master base stations, including:

[0010] An inter-cluster handover request receiving module, configured to receive an inter-cluster handover request forwarded by a second cluster master base station, wherein the inter-cluster handover request is sent by a user equipment to the second cluster master base station;

[0011] The service beam configuration module is used to control the target cluster slave base station to send a low-altitude service beam for the user equipment when the first cluster master base station itself does not meet the service requirements corresponding to the inter-cluster handover request. The target cluster slave base station is a cluster slave base station that meets the service requirements in the low-altitude cluster to which the first cluster master base station belongs;

[0012] A base station information sending module is used to send the first base station information of the first cluster main base station and the second base station information of the target cluster slave base station to the user equipment through the second cluster main base station. The first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication, and the second base station information is used to instruct the user equipment to access the low-altitude service beam for service data communication.

[0013] In a third aspect, the present application further provides a communication device, wherein the communication device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the above low-altitude communication method are implemented.

[0014] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the above low-altitude communication method are implemented.

[0015] In a fifth aspect, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the above low-altitude communication method are implemented.

[0016] In the above-mentioned low-altitude communication method, apparatus, communication equipment, computer-readable storage medium and computer program product, the first cluster main base station receives the inter-cluster switching request sent by the user equipment through the second cluster main base station, and when it does not meet the service requirements corresponding to the inter-cluster switching request, controls the target cluster slave base station in the low-altitude cluster that meets the service requirements to send a low-altitude service beam for the user equipment, and sends the first base station information of the first cluster main base station and the second base station information of the target cluster slave base station to the user equipment through the second cluster main base station, so as to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication through the first base station information, and to instruct the user equipment to access the low-altitude service beam for service data communication through the second base station information. During the low-altitude communication process, when the first cluster main base station itself does not meet the service requirements, the low-altitude control beam and the low-altitude service beam in the low-altitude cluster are separated, and are sent by the first cluster main base station and the target cluster slave base station in the same low-altitude cluster, respectively, which can reduce the frequent switching of the control beam, reduce the service conflict between the low-altitude network and the ground network, ensure the signal quality of the low-altitude network, and thus improve the low-altitude communication performance.

[0017] In a sixth aspect, the present application provides a low-altitude communication method, applied to a user equipment, including:

[0018] When the low-altitude cluster handover triggering condition is met, an inter-cluster handover request is sent to the first cluster master base station through the second cluster master base station currently performing low-altitude communication;

[0019] Upon receiving the first base station information and the second base station information sent by the first cluster master base station through the second cluster master base station, accessing the low-altitude control beam sent by the first cluster master base station for control signal communication, and accessing the low-altitude service beam sent by the target cluster slave base station for service data communication;

[0020] Among them, the first base station information is the base station information of the first cluster main base station, and the second base station information is the base station information of the target cluster slave base station. The target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

[0021] In a seventh aspect, the present application further provides a low-altitude communication device, applied to a user equipment, including:

[0022] An inter-cluster handover request sending module, configured to send an inter-cluster handover request to a first cluster master base station through a second cluster master base station currently performing low-altitude communication when a low-altitude cluster handover triggering condition is met;

[0023] A beam access module is used to access the low-altitude control beam sent by the first cluster main base station for control signal communication, and access the low-altitude service beam sent by the target cluster slave base station for service data communication when receiving the first base station information and the second base station information sent by the first cluster main base station through the second cluster main base station;

[0024] Among them, the first base station information is the base station information of the first cluster main base station, and the second base station information is the base station information of the target cluster slave base station. The target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

[0025] In an eighth aspect, the present application further provides a communication device, wherein the communication device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the above low-altitude communication method are implemented.

[0026] In a ninth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the above low-altitude communication method are implemented.

[0027] In a tenth aspect, the present application further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the above low-altitude communication method are implemented.

[0028] The above-mentioned low-altitude communication method, apparatus, communication equipment, computer-readable storage medium and computer program product, when the low-altitude cluster switching trigger condition is met, the user equipment sends the inter-cluster switching request to the first cluster main base station through the second cluster main base station currently performing low-altitude communication, and when receiving the first base station information of the first cluster main base station sent by the first cluster main base station through the second cluster main base station and the second base station information of the target cluster slave base station, accesses the low-altitude control beam sent by the first cluster main base station to communicate control signals, and accesses the low-altitude service beam sent by the target cluster slave base station to communicate service data. During the low-altitude communication process, when the first cluster main base station itself does not meet the service requirements, the low-altitude control beam and the low-altitude service beam in the low-altitude cluster are separated, and are sent by the first cluster main base station and the target cluster slave base station in the same low-altitude cluster, respectively, which can reduce the frequent switching of the control beam, reduce the service conflicts between the low-altitude network and the ground network, ensure the signal quality of the low-altitude network, and thus improve the low-altitude communication performance.

[0029] In an eleventh aspect, the present application provides a low-altitude communication method, applied to a second cluster master base station, comprising:

[0030] receiving an inter-cluster handover request sent by a user equipment, and forwarding the inter-cluster handover request to a first cluster master base station;

[0031] receiving first base station information and second base station information sent by a first cluster master base station, and forwarding the first base station information and the second base station information to a user equipment;

[0032] Among them, the first base station information is the base station information of the first cluster main base station, and the first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication. The second base station information is the base station information of the target cluster slave base station, and the second base station information is used to instruct the user equipment to access the low-altitude service beam sent by the target cluster slave base station for service data communication. The target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

[0033] In a twelfth aspect, the present application further provides a low-altitude communication device, applied to a second cluster master base station, including:

[0034] An inter-cluster handover request forwarding module, configured to receive an inter-cluster handover request sent by a user equipment, and forward the inter-cluster handover request to a first cluster master base station;

[0035] A base station information forwarding module, configured to receive first base station information and second base station information sent by a first cluster master base station in response to an inter-cluster handover request, and forward the first base station information and the second base station information to a user equipment;

[0036] Among them, the first base station information is the base station information of the first cluster main base station, and the first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication. The second base station information is the base station information of the target cluster slave base station, and the second base station information is used to instruct the user equipment to access the low-altitude service beam sent by the target cluster slave base station for service data communication. The target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

[0037] In a thirteenth aspect, the present application further provides a communication device, wherein the communication device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the above low-altitude communication method are implemented.

[0038] In a fourteenth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the above low-altitude communication method are implemented.

[0039] In a fifteenth aspect, the present application further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the above low-altitude communication method are implemented.

[0040] In the above-mentioned low-altitude communication method, apparatus, communication equipment, computer-readable storage medium and computer program product, the second cluster main base station forwards the inter-cluster switching request sent by the user equipment to the first cluster main base station, and forwards the first base station information and the second base station information sent by the first cluster main base station to the user equipment, so as to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication through the first base station information, and to instruct the user equipment to access the low-altitude service beam for service data communication through the second base station information. During the low-altitude communication process, when the first cluster main base station itself does not meet the service requirements, the low-altitude control beam and the low-altitude service beam in the low-altitude cluster are separated, and are respectively sent by the first cluster main base station and the target cluster slave base station in the same low-altitude cluster, which can reduce the frequent switching of the control beam, reduce the service conflict between the low-altitude network and the ground network, ensure the signal quality of the low-altitude network, and thus improve the low-altitude communication performance.

[0041] In a sixteenth aspect, the present application further provides a low-altitude communication system, including a user equipment, a first cluster of master base stations, and a second cluster of master base stations, wherein:

[0042] The user equipment is configured to send an inter-cluster handover request to a second cluster master base station when a low-altitude cluster handover triggering condition is met;

[0043] The second cluster master base station is used to forward the inter-cluster handover request to the first cluster master base station;

[0044] The first cluster master base station is configured to receive an inter-cluster handover request forwarded by the second cluster master base station, and when the first cluster master base station itself does not meet the service requirements corresponding to the inter-cluster handover request, control the target cluster slave base station to send a low-altitude service beam for the user equipment, where the target cluster slave base station is a cluster slave base station that meets the service requirements in the low-altitude cluster to which the first cluster master base station belongs; and send the first base station information of the first cluster master base station and the second base station information of the target cluster slave base station to the second cluster master base station;

[0045] The second cluster main base station is further configured to receive the first base station information and the second base station information sent by the first cluster main base station, and forward the first base station information and the second base station information to the user equipment;

[0046] The user equipment is also used to receive the first base station information and the second base station information forwarded by the second cluster main base station, access the low-altitude control beam sent by the first cluster main base station to communicate control signals, and access the low-altitude service beam to communicate service data.

[0047] In the above-mentioned low-altitude communication system, when the user equipment meets the low-altitude cluster switching triggering conditions, the inter-cluster switching request is forwarded to the first cluster main base station through the second cluster main base station. When the user equipment itself does not meet the service requirements corresponding to the inter-cluster switching request, the first cluster main base station controls the target cluster slave base station that meets the service requirements in the low-altitude cluster to which it belongs to send a low-altitude service beam for the user equipment, and sends the first base station information of the first cluster main base station and the second base station information of the target cluster slave base station to the user equipment through the second cluster main base station, so that the user equipment accesses the low-altitude control beam sent by the first cluster main base station for control signal communication, and accesses the low-altitude service beam for service data communication. During the low-altitude communication process, when the first cluster main base station itself does not meet the service requirements, the low-altitude control beam and the low-altitude service beam in the low-altitude cluster are separated, and are sent by the first cluster main base station and the target cluster slave base station in the same low-altitude cluster, respectively, which can reduce the frequent switching of the control beam, reduce the service conflicts between the low-altitude network and the ground network, ensure the signal quality of the low-altitude network, and thus improve the low-altitude communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 A diagram showing an application environment of a low-altitude communication method in an embodiment;

[0050] Figure 2 A schematic diagram of a flow chart of a low-altitude communication method in an embodiment;

[0051] Figure 3 is a timing diagram of a low-altitude communication method in one embodiment;

[0052] Figure 4 A schematic diagram of a process for controlling the transmission of a low-altitude service beam in an embodiment;

[0053] Figure 5 is a timing diagram of a low-altitude communication method in yet another embodiment;

[0054] Figure 6 A schematic diagram of a flow chart of a low-altitude communication method in yet another embodiment;

[0055] Figure 7 A schematic diagram of a flow chart of a low-altitude communication method in yet another embodiment;

[0056] Figure 8 This is a schematic diagram of the architecture of a traditional low-altitude communication system;

[0057] Fig. 9 A schematic diagram of the architecture of a low-altitude communication system in one embodiment;

[0058] Fig.10 A schematic diagram of a flow chart of a low-altitude communication method in yet another embodiment;

[0059] Fig.11 is a structural block diagram of a low-altitude communication device in one embodiment;

[0060] Fig.12 It is a structural block diagram of a low-altitude communication device in yet another embodiment;

[0061] Fig.13 It is a structural block diagram of a low-altitude communication device in yet another embodiment;

[0062] Fig.14 is an internal structure diagram of a communication device in one embodiment;

[0063] Fig.15 is an internal structure diagram of a communication device in yet another embodiment;

[0064] Fig.16 1 is a structural block diagram of a low altitude communication system in one embodiment. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0066] The low-altitude communication method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the first cluster main base station 102 can be a cluster main base station in the first low-altitude cluster, and the first cluster main base station 102 can control each cluster slave base station in the first low-altitude cluster, such as controlling the broadcast beam transmission of the cluster slave base station; the second cluster main base station 104 can be a cluster main base station in the second low-altitude cluster, and the second cluster main base station 104 can control each cluster slave base station in the second low-altitude cluster, such as controlling the broadcast beam transmission of the cluster slave base station; the user equipment 106 can move in the low-altitude network to communicate with the first cluster main base station 102 or the second cluster main base station 104 through the low-altitude network.

[0067] When the user equipment 106 meets the low-altitude cluster handover triggering condition, the user equipment 106 may send an inter-cluster handover request to the second cluster master base station 104; the second cluster master base station 104 may forward the inter-cluster handover request to the first cluster master base station 102. The first cluster master base station 102 receives the inter-cluster handover request forwarded by the second cluster master base station 104, and when the first cluster master base station 102 itself does not meet the service requirements corresponding to the inter-cluster handover request, controls the target cluster slave base station to send a low-altitude service beam for the user equipment, and the target cluster slave base station is a cluster slave base station that meets the service requirements in the low-altitude cluster to which the first cluster master base station 102 belongs. The first cluster master base station 102 may send the first base station information of the first cluster master base station 102 and the second base station information of the target cluster slave base station to the second cluster master base station 104. The second cluster master base station 104 may receive the first base station information and the second base station information sent by the first cluster master base station 102, and forward the first base station information and the second base station information to the user equipment 106. The user equipment 106 can receive the first base station information and the second base station information forwarded by the second cluster main base station 104. The user equipment 106 can access the low-altitude control beam sent by the first cluster main base station 102 for control signal communication, and access the low-altitude service beam sent by the target cluster slave base station for service data communication.

[0068] The first cluster of master base stations 102 or the second cluster of master base stations 104 may be a base station (Base Transceiver Station, BTS) in Global System of Mobile communication (GSM) or Code Division Multiple Access (CDMA), or a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), or an evolutionary Node B (eNB or eNodeB) in LTE, or a relay station or access point, or a base station in a 5G network, etc. The user equipment 106 may be a terminal device for low-altitude communication in a low-altitude network, such as various devices including drones and aircraft.

[0069] Before introducing the specific embodiments of the present application, the professional terms involved in the present application are explained first:

[0070] CM: Cluster Master, the main base station of the low-altitude cluster, is the main base station responsible for managing and coordinating other base stations in the low-altitude cluster. It plays a core role in the low-altitude network and is responsible for signal strength monitoring, load management, and switching instructions for drones.

[0071] CS: Cluster Slaver, a low-altitude cluster slave base station, is a base station affiliated to the low-altitude cluster master base station, responsible for providing communication services for drones. They are uniformly managed by the low-altitude cluster master base station and perform signal transmission tasks according to instructions.

[0072] UE: User Equipment, refers to a device operating in a low-altitude network, such as a drone. In some embodiments, UE refers to a drone that performs signal measurement and base station switching operations.

[0073] RSRP: Reference Signal Received Power, is an indicator to measure the strength of received signals in wireless networks. RSRP is used to evaluate signal quality and determine the timing of base station switching.

[0074] SINR: Signal to Interference plus Noise Ratio, is a key indicator for measuring the quality of received signals. SINR is used to evaluate the reliability of communication links and affects base station selection and switching decisions.

[0075] LOS: Line of Sight, which refers to the way signals are transmitted without any obstacles. Under LOS conditions, signal transmission loss is small and coverage is good.

[0076] HO: Handover refers to the process of user equipment (such as drones) switching from one base station to another during movement. An effective handover mechanism can improve the coverage and service continuity of low-altitude networks.

[0077] LACB: Low Altitude Control Beam, low altitude control beam, this beam is used to transmit control signals of drones.

[0078] LAUB: Low Altitude User Beam, a low altitude service beam, is used to transmit drone’s video, pictures, sensor data and other service data.

[0079] FDI: Flight Direction Information, UAV flight direction information, UAV flight direction information usually includes the following key information: Heading: refers to the azimuth of the current direction of the UAV, usually expressed in degrees, starting from the north and counting clockwise, ranging from 0 to 360 degrees. Pitch: describes the tilt of the UAV in the front and back directions. Positive pitch means the nose is up, and negative pitch means the nose is down. Roll: describes the tilt of the UAV in the left and right directions. Positive roll means right tilt, and negative roll means left tilt. Yaw: similar to heading, but yaw is usually used to describe the rotation angle of the UAV relative to its initial direction. Speed: the flight speed of the UAV in the current direction, usually expressed in meters per second (m / s) or kilometers per hour (km / h). Position: includes the GPS coordinates (longitude, latitude and altitude) of the UAV, which are used to accurately determine its current position.

[0080] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0081] In an exemplary embodiment, Figure 2 As shown, a low-altitude communication method is provided, and the method is applied to Figure 1 Taking the first cluster of master base stations in the example as an example, the method includes the following steps 202 to 206. Among them:

[0082] Step 202: receiving an inter-cluster handover request forwarded by the second cluster master base station, where the inter-cluster handover request is sent by the user equipment to the second cluster master base station.

[0083] Among them, low-altitude communication is communication based on a low-altitude communication network. The low-altitude communication network is a communication network that realizes real-time monitoring and data transmission of low-altitude aircraft and their onboard sensors and other equipment through wireless networking, satellite relay and mobile communication technology. The first cluster master base station is the cluster master base station (Cluster Master, CM) in the first low-altitude cluster. The cluster master base station is responsible for managing and coordinating the main base stations of other base stations in the low-altitude cluster. It plays a core role in the low-altitude network and is responsible for signal strength monitoring, load management and switching instructions of drones. The first cluster master base station can be responsible for and coordinate other base stations in the first low-altitude cluster. The second cluster master base station can be the cluster master base station in the second low-altitude cluster, which is used to be responsible for and coordinate other base stations in the second low-altitude cluster. User equipment (User Equipment, UE) can be a device running in a low-altitude network, such as a drone or aircraft. The inter-cluster handover request is a request message for requesting a low-altitude cluster handover. The inter-cluster handover request can be sent by the user equipment to the cluster master base station performing low-altitude communication.

[0084] Exemplarily, a communication connection can be established between each cluster main base station in the low-altitude communication network, specifically, a communication connection can be established between the first cluster main base station and the second cluster main base station, the first cluster main base station can receive an inter-cluster switching request forwarded by the second cluster main base station, and the inter-cluster switching request can be sent by the user equipment to the second cluster main base station, such as when the user equipment needs to perform a low-altitude cluster switching, the inter-cluster switching request can be sent to the second cluster main base station. In some embodiments, the user equipment can perform low-altitude communication with the second cluster main base station, such as when the user equipment is operating in the low-altitude cluster to which the second cluster main base station belongs, the user equipment can perform low-altitude communication with the second cluster main base station, and when a low-altitude cluster switching is required, such as when the user equipment moves to the boundary of the low-altitude cluster to which the second cluster main base station belongs, a low-altitude cluster switching may be required, and the user equipment can send an inter-cluster switching request to the second cluster main base station, and the second cluster main base station can forward the inter-cluster switching request sent by the user equipment to the first cluster main base station, and the first cluster main base station can serve as the cluster main base station in the low-altitude cluster to which the user equipment needs to switch.

[0085] Step 204, when the first cluster master base station itself does not meet the service requirements corresponding to the inter-cluster switching request, control the target cluster slave base station to send a low-altitude service beam for the user equipment, and the target cluster slave base station is a cluster slave base station that meets the service requirements in the low-altitude cluster to which the first cluster master base station belongs.

[0086] Among them, the service requirement is the demand of the user equipment to realize the corresponding service through low-altitude communication, such as at least one of various network resources such as physical resources, logical resources, and service resources. The low-altitude service beam (Low Altitude User Beam, LAUB) is used for the transmission of application layer data, such as the transmission of service data such as video, pictures, and sensor data in low-altitude communication. The cluster slave base station (Cluster Slaver, CS) is a base station in the low-altitude cluster that belongs to the low-altitude cluster master base station. The cluster slave base station is responsible for providing communication services. The cluster slave base station is uniformly managed by the low-altitude cluster master base station and performs signal transmission tasks according to instructions. The target cluster slave base station is a cluster slave base station selected for sending low-altitude service beams, such as a cluster slave base station selected from the low-altitude cluster to which the first cluster master base station belongs.

[0087] Optionally, the first cluster main base station can determine whether the first cluster main base station itself meets the service requirements corresponding to the inter-cluster switching request. For example, the first cluster main base station can determine whether the service requirements corresponding to the inter-cluster switching request are met based on its own load, thereby determining whether the first cluster main base station itself can directly support the low-altitude communication service of the user equipment. When the first cluster main base station itself does not meet the service requirements, it indicates that the first cluster main base station cannot directly provide high-performance low-altitude communication for the user equipment. Then, the first cluster main base station can control the target cluster slave base station to send a low-altitude service beam for the user equipment. In some embodiments, the first cluster main base station can determine each cluster slave base station in the low-altitude cluster to which it belongs, and select the target cluster slave base station from each cluster slave base station according to the service requirements, and configure the target cluster slave base station to send a low-altitude service beam for the user equipment, thereby controlling the target cluster slave base station to transmit service data with the user equipment.

[0088] Step 206, the first base station information of the first cluster main base station and the second base station information of the target cluster slave base station are sent to the user equipment through the second cluster main base station, the first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication, and the second base station information is used to instruct the user equipment to access the low-altitude service beam for service data communication.

[0089] The first base station information may include base station information of the first cluster master base station, such as identification information of the first cluster master base station, and the second base station information may include base station information of the target cluster slave base station, such as identification information of the target cluster slave base station, and the identification information may include at least one of various information such as ID (Identity), name, and number. Low Altitude Control Beam (LACB) is used for transmission of control signals of user equipment.

[0090] Exemplarily, the first cluster master base station can send the first base station information of the first cluster master base station and the second base station information of the target cluster slave base station to the user equipment through the second cluster master base station. For example, the first cluster master base station can determine its own first base station information and the second base station information of the target cluster slave base station. The first cluster master base station can send the first base station information and the second base station information to the second cluster master base station, so that the second cluster master base station forwards the first base station information and the second base station information to the user equipment. In some embodiments, after the first cluster master base station controls the target cluster slave base station to send a low-altitude service beam for the user equipment, the first cluster master base station itself can send a low-altitude control beam, thereby realizing the separation of the low-altitude control beam and the low-altitude service beam, that is, the low-altitude control beam and the low-altitude service beam are sent through different base stations. After the user equipment receives the first base station information and the second base station information, the user equipment can determine the first cluster main base station based on the first base station information, and access the low-altitude control beam sent by the first cluster main base station to communicate control signals through the low-altitude control beam, that is, the control signal can be transmitted between the first cluster main base station and the user equipment through the low-altitude control beam; the user equipment can determine the target cluster slave base station based on the second base station information, and access the low-altitude service beam sent by the target cluster slave base station to communicate service data through the low-altitude service beam, that is, the service data can be transmitted between the target cluster slave base station and the user equipment through the low-altitude service beam.

[0091] In some embodiments, Figure 3 As shown, when inter-cluster switching is required, the user equipment can send an inter-cluster switching request to the second cluster main base station that is currently performing low-altitude communication. The second cluster main base station can forward the inter-cluster switching request to the first cluster main base station. When it is determined that it does not meet the service requirements corresponding to the inter-cluster switching request, the first cluster main base station can control the target cluster slave base station to send a low-altitude service beam for the user equipment. The first cluster main base station can send base station information to the second cluster main base station, and the base station information includes the first base station information of the first cluster main base station and the second base station information of the target cluster slave base station. The second cluster main base station can forward the base station information to the user equipment. The user equipment can access based on the base station information. Specifically, the user equipment can access the low-altitude control beam sent by the first cluster main base station for control signal communication, and access the low-altitude service beam sent by the target cluster slave base station for service data communication.

[0092] In the above-mentioned low-altitude communication method, the first cluster main base station receives the inter-cluster switching request sent by the user equipment through the second cluster main base station. When the first cluster main base station does not meet the service requirements corresponding to the inter-cluster switching request, the first cluster main base station controls the target cluster slave base station in the low-altitude cluster that meets the service requirements to send a low-altitude service beam for the user equipment, and sends the first base station information of the first cluster main base station and the second base station information of the target cluster slave base station to the user equipment through the second cluster main base station, so as to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication through the first base station information, and to instruct the user equipment to access the low-altitude service beam for service data communication through the second base station information. During the low-altitude communication process, when the first cluster main base station itself does not meet the service requirements, the low-altitude control beam and the low-altitude service beam in the low-altitude cluster are separated, and are sent by the first cluster main base station and the target cluster slave base station in the same low-altitude cluster respectively, which can reduce the frequent switching of the control beam, reduce the service conflict between the low-altitude network and the ground network, ensure the signal quality of the low-altitude network, and thus improve the low-altitude communication performance.

[0093] In an exemplary embodiment, the inter-cluster switching request includes actual movement information of the user equipment; controlling the target cluster from the base station to send a low-altitude service beam for the user equipment includes: determining the predicted movement information of the user equipment based on the actual movement information; generating a beam configuration instruction according to the predicted movement information; and sending the beam configuration instruction to the target cluster from the base station, the beam configuration instruction being used to instruct the target cluster to send a low-altitude service beam for the user equipment from the base station.

[0094] Among them, the actual motion information may be the motion information corresponding to the historical moment actually generated by the user device during the operation of the low-altitude communication network. For example, when the user device is a drone, the actual motion information may include the drone flight direction information (Flight Direction Information, FDI), and the flight direction information may include but is not limited to at least one of heading (Heading), roll angle (Roll), yaw angle (Yaw), speed (Speed), and position (Position). Among them, heading refers to the azimuth of the current direction of the drone, usually expressed in degrees, calculated clockwise from due north, ranging from 0 to 360 degrees; the pitch angle describes the tilt of the drone in the front and back directions, positive pitch means the nose is up, negative pitch means the nose is down; the roll angle describes the tilt of the drone in the left and right directions, positive roll means right tilt, negative roll means left tilt; the yaw angle is similar to the heading, but the yaw angle is usually used to describe the rotation angle of the drone relative to its initial direction; the speed indicates the flight speed of the drone in the current direction, usually expressed in meters per second (m / s) or kilometers per hour (km / h); the position includes the GPS (Global Positioning System) coordinates (longitude, latitude and altitude) of the drone, which are used to accurately determine its current position.

[0095] The predicted motion information is the motion information corresponding to the future moment predicted for the motion of the user equipment. For example, the user equipment can be predicted based on the actual motion information of the user equipment to obtain the predicted motion information of the user equipment. For example, the predicted motion information may include the movement trajectory and position change information predicted for the user equipment. The beam configuration instruction acts on the cluster slave base station to implement the broadcast constraint control for the cluster slave base station, such as controlling the low-altitude service beam sent by the cluster slave base station.

[0096] Optionally, the inter-cluster handover request includes actual motion information of the user equipment, that is, the user equipment can report its actual motion information when sending the inter-cluster handover request. The first cluster master base station can extract the actual motion information of the user equipment from the inter-cluster handover request, and predict the motion of the user equipment based on the actual motion information to obtain the predicted motion information of the user equipment. For example, the first cluster master base station can predict the position of the user equipment, the movement speed of the user equipment and other motion information of the user equipment at a future moment based on a machine learning algorithm. The first cluster master base station can generate a beam configuration instruction based on the predicted motion information, and send the beam configuration instruction to the target cluster slave base station to control the target cluster slave base station to send a low-altitude service beam for the user equipment through the beam configuration instruction. In some embodiments, the target cluster slave base station can send a narrower directional service beam LAUB based on the beam configuration instruction to align and track the drone UE. The directional service beam LAUB needs to adjust the LAUB beam direction, length (power), width and other parameters.

[0097] In this embodiment, the first cluster main base station determines the predicted motion information based on the actual motion information of the user equipment, and generates a beam configuration instruction according to the predicted motion information, so as to control the target cluster from the base station to send a low-altitude service beam for the user equipment through the beam configuration instruction. The predicted motion information of the user equipment can be used to control the target cluster from the base station to send a directional low-altitude service beam that can be aimed at and track the user equipment, thereby ensuring the quality of the low-altitude network signal and improving the low-altitude communication performance.

[0098] In an exemplary embodiment, Figure 4 As shown, the process of controlling the transmission of the low-altitude service beam, that is, when the first cluster master base station itself does not meet the service requirements corresponding to the inter-cluster handover request, controlling the target cluster slave base station to transmit the low-altitude service beam for the user equipment includes steps 402 to 406. Among them:

[0099] Step 402 , when the load of the first cluster master base station itself does not meet the service requirement corresponding to the inter-cluster handover request, the load of each cluster slave base station in the low-altitude cluster to which the first cluster master base station belongs is determined.

[0100] Exemplarily, the first cluster master base station can determine its own load, and determine whether the service requirements corresponding to the inter-cluster switching request are met based on its own load. When the first cluster master base station itself has a heavy load and does not meet the service access requirements of the user equipment, the first cluster master base station needs to separate the low-altitude service beam from the low-altitude control beam, and the first cluster master base station can determine the load of each cluster slave base station in the low-altitude cluster to which it belongs. For example, the first cluster master base station can query the load of each cluster slave base station in the low-altitude cluster to which it belongs based on historical queries or real-time queries.

[0101] Step 404: Determine at least one target cluster slave base station that meets the service requirement from among the cluster slave base stations according to the loads of the cluster slave base stations.

[0102] Optionally, the first cluster master base station may screen each cluster slave base station based on the load of each cluster slave base station to select a target cluster slave base station that can meet the service requirements from each cluster slave base station, and the target cluster slave base station may include at least one.

[0103] Step 406: Control at least one target cluster to send a low-altitude service beam for the user equipment from the base station.

[0104] Exemplarily, the first cluster master base station can control at least one determined target cluster slave base station to respectively send a low-altitude service beam for the user equipment. For example, the first cluster master base station can dynamically configure at least one target cluster slave base station into one directional low-altitude service beam LAUB to the air, and the parameters of each low-altitude service beam of each target cluster slave base station can be determined based on the predicted motion information of the user equipment, and the predicted motion information can be predicted based on the actual motion information of the user equipment.

[0105] In this embodiment, when it is determined based on its own load that the service requirements corresponding to the inter-cluster switching request are not met, the first cluster main base station can determine at least one target cluster slave base station that meets the service requirements based on the loads of each cluster slave base station, and control at least one target cluster slave base station to send a low-altitude service beam for the user equipment, so that the low-altitude control beam and the low-altitude service beam within the low-altitude cluster are separated, and are respectively sent by the first cluster main base station and the target cluster slave base station in the same low-altitude cluster. This can reduce frequent switching of control beams, reduce service conflicts between the low-altitude network and the ground network, ensure the quality of the low-altitude network signal, and thus improve the low-altitude communication performance.

[0106] In an exemplary embodiment, the low-altitude communication method also includes: when the first cluster main base station itself meets the service requirements, sending the first base station information to the user equipment through the second cluster main base station; wherein the first base station information is used to instruct the user equipment to access the low-altitude control beam and low-altitude service beam sent by the first cluster main base station.

[0107] Exemplarily, when the first cluster of main base stations itself meets the service requirements, such as when the first cluster of main base stations itself has a light load and meets the low-altitude communication service requirements for the user equipment, the first cluster of main base stations can directly switch both the low-altitude control beam and the low-altitude service beam to its own broadcast beam. The first cluster of main base stations can send its own first base station information to the second cluster of main base stations, which will be forwarded to the user equipment by the second cluster of main base stations. The user equipment can access the low-altitude control beam and the low-altitude service beam sent by the first cluster of main base stations based on the first base station information. In some embodiments, when the first cluster of main base stations itself meets the service requirements, the first cluster of main base stations can send a low-altitude control beam and a low-altitude service beam for the user equipment, so that the user equipment can access the low-altitude control beam for control signal communication, and access the low-altitude service beam for service data communication.

[0108] In some embodiments, Figure 5 As shown, when inter-cluster switching is required, the user equipment can send an inter-cluster switching request to the second cluster main base station currently performing low-altitude communication, and the second cluster main base station can forward the inter-cluster switching request to the first cluster main base station. When it is determined that it meets the service requirements corresponding to the inter-cluster switching request, the first cluster main base station can send base station information to the second cluster main base station, and the base station information includes the first base station information of the first cluster main base station, and the second cluster main base station can forward the base station information to the user equipment. The user equipment can access based on the base station information. Specifically, the user equipment can access the low-altitude control beam sent by the first cluster main base station for control signal communication, and access the low-altitude service beam sent by the first cluster main base station for service data communication.

[0109] In this embodiment, when the first cluster main base station meets the business requirements, it directly controls the user equipment to access the low-altitude control beam and the low-altitude business beam sent by the first cluster main base station, which can reduce the frequent switching of the control beam, reduce the business conflicts between the low-altitude network and the ground network, ensure the low-altitude network signal quality, and thus improve the low-altitude communication performance.

[0110] In an exemplary embodiment, Figure 6 As shown, a low-altitude communication method is provided, and the method is applied to Figure 1 The user equipment in the example is used to illustrate, including the following steps 602 to 604. Among them:

[0111] Step 602: When the low-altitude cluster handover triggering condition is met, an inter-cluster handover request is sent to the first cluster master base station via the second cluster master base station currently performing low-altitude communication.

[0112] Among them, the low-altitude cluster switching trigger condition is used to determine whether low-altitude cluster switching is required, so as to perform low-altitude communication through base stations in different low-altitude clusters. The low-altitude cluster switching trigger condition can be set according to actual needs. For example, it can be determined whether the low-altitude cluster switching trigger condition is met based on the low-altitude communication quality. For example, when the low-altitude communication quality is low, it can be determined that the low-altitude cluster switching trigger condition is met. The low-altitude communication quality can be characterized by the signal quality parameters of low-altitude communication. The signal quality parameters may include but are not limited to at least one of the reference signal received power (RSRP) and the signal to interference plus noise ratio (SINR). The reference signal received power is an indicator of the received signal strength in a wireless network. RSRP is used to evaluate the signal quality and determine the timing of base station switching; the signal to interference plus noise ratio is a key indicator for measuring the quality of the received signal. SINR is used to evaluate the reliability of the communication link and affects the base station selection and switching decision. The inter-cluster handover request is a request message for requesting low-altitude cluster handover. The inter-cluster handover request can be sent by the user equipment to the second cluster master base station for low-altitude communication, and forwarded by the second cluster master base station to the first cluster master base station to be inter-clustered. The first cluster master base station and the second cluster master base station can be cluster master base stations in their respective low-altitude clusters, responsible for managing and coordinating other cluster slave base stations in their respective low-altitude clusters.

[0113] Exemplarily, the user equipment can detect whether the low-altitude cluster switching trigger condition is met to determine whether a low-altitude cluster switching is required. When it is determined that the low-altitude cluster switching trigger condition is met, if the user equipment is at the boundary of the current low-altitude cluster, and the RSRP and / or SINR of the currently served second cluster master base station broadcast beam LACB is measured to be lower than the corresponding threshold value, the user equipment can determine that the low-altitude cluster switching trigger condition is met. The user equipment can send an inter-cluster switching request to the second cluster master base station to request a low-altitude cluster switching. The second cluster master base station can forward the inter-cluster switching request to the first cluster master base station to be switched.

[0114] Step 604, upon receiving the first base station information and the second base station information sent by the first cluster main base station through the second cluster main base station, access is made to the low-altitude control beam sent by the first cluster main base station for control signal communication, and access is made to the low-altitude service beam sent by the target cluster slave base station for service data communication; wherein the first base station information is the base station information of the first cluster main base station, and the second base station information is the base station information of the target cluster slave base station, and the target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

[0115] The low altitude control beam is used for transmission of control signals in low altitude communication, and the low altitude service beam is used for transmission of service data in low altitude communication. The target cluster slave base station is a cluster slave base station selected from the low altitude cluster to which the first cluster master base station belongs and used for sending the low altitude service beam.

[0116] Optionally, after the user equipment sends an inter-cluster switching request, upon receiving the first base station information and the second base station information forwarded by the second cluster main base station, the user equipment can access the low-altitude control beam sent by the first cluster main base station for control signal communication, and access the low-altitude service beam sent by the target cluster slave base station for service data communication. In some embodiments, the first base station information and the second base station information are sent by the first cluster main base station to the second cluster main base station, and forwarded to the user equipment by the second cluster main base station. The user equipment can determine the first cluster main base station based on the first base station information, and access the low-altitude control beam sent by the first cluster main base station to communicate control signals through the low-altitude control beam; the user equipment can determine the corresponding target cluster slave base station based on the second base station information, and access the low-altitude service beam sent by the target cluster slave base station to communicate service data through the accessed low-altitude service beam.

[0117] In the above-mentioned low-altitude communication method, when the low-altitude cluster switching triggering condition is met, the user equipment sends the inter-cluster switching request to the first cluster main base station through the second cluster main base station currently performing low-altitude communication, and when receiving the first base station information of the first cluster main base station and the second base station information of the target cluster slave base station sent by the first cluster main base station through the second cluster main base station, it accesses the low-altitude control beam sent by the first cluster main base station for control signal communication, and accesses the low-altitude service beam sent by the target cluster slave base station for service data communication. During the low-altitude communication process, when the first cluster main base station itself does not meet the service requirements, the low-altitude control beam and the low-altitude service beam in the low-altitude cluster are separated, and are sent by the first cluster main base station and the target cluster slave base station in the same low-altitude cluster, respectively, which can reduce the frequent switching of the control beam, reduce the service conflict between the low-altitude network and the ground network, ensure the signal quality of the low-altitude network, and thus improve the low-altitude communication performance.

[0118] In an exemplary embodiment, the low-altitude communication method further includes: upon receiving first base station information sent by the first cluster main base station through the second cluster main base station, accessing the low-altitude control beam and the low-altitude service beam sent by the first cluster main base station.

[0119] Among them, the first base station information is the base station information corresponding to the first cluster master base station. Exemplarily, when the user equipment receives the base station information forwarded by the second cluster master base station, which includes the first base station information but does not include the second base station information, it indicates that the user equipment can directly access the broadcast beam of the first cluster master base station, and the broadcast beam includes a low-altitude control beam and a low-altitude service beam. The user equipment can access the low-altitude control beam and the low-altitude service beam sent by the first cluster master base station to communicate control signals through the accessed low-altitude control beam and to communicate service data through the accessed low-altitude service beam. In some embodiments, after the user equipment receives the base station information forwarded by the second cluster master base station, it can make a judgment on the base station information to determine whether it includes the base station information corresponding to the cluster slave base station, that is, determine whether it includes the second base station information corresponding to the target cluster slave base station. If the second base station information is not included but the first base station information is included, the user equipment can access the low-altitude control beam and the low-altitude service beam sent by the first cluster master base station.

[0120] In this embodiment, when the first base station information of the first cluster main base station is received but the second base station information is not received, the user equipment can access the low-altitude control beam and the low-altitude service beam sent by the first cluster main base station, which can reduce the frequent switching of the control beam, reduce the service conflict between the low-altitude network and the ground network, ensure the low-altitude network signal quality, and thus improve the low-altitude communication performance.

[0121] In an exemplary embodiment, the target cluster slave base station includes at least one, and accesses to a low-altitude service beam sent by the target cluster slave base station for service data communication, including: determining respective signal quality parameters between the target cluster slave base station; determining a cluster slave base station to be accessed from the target cluster slave base station based on respective signal quality parameters between the target cluster slave base station; and accessing to a low-altitude service beam sent by the cluster slave base station to be accessed for service data communication.

[0122] The signal quality parameter is used to characterize the communication quality of low-altitude communication, and may specifically include but is not limited to at least one of reference signal received power and signal to interference noise ratio. The cluster slave base station to be accessed is a cluster slave base station determined from the target cluster slave base station and accessed by the user equipment for service data communication.

[0123] Exemplarily, the target cluster slave base station screened out from each cluster slave base station includes at least one, and the user equipment can determine the signal quality parameters between each target cluster slave base station, such as the signal strength RSRP and / or signal to interference and noise ratio SINR of the low-altitude service beam between the user equipment and each target cluster slave base station. The user equipment can screen the target cluster slave base station based on each signal quality parameter to determine the cluster slave base station to be accessed that needs to be accessed. For example, the user equipment can determine the target cluster slave base station with the largest signal strength RSRP or signal to interference and noise ratio SINR value as the cluster slave base station to be accessed. The user equipment can access the low-altitude service beam sent by the cluster slave base station to be accessed, so as to communicate service data through the low-altitude service beam sent by the cluster slave base station to be accessed.

[0124] In this embodiment, the user equipment can determine the cluster slave base station to be accessed from the target cluster slave base stations based on the respective signal quality parameters between the user equipment and each target cluster slave base station, so as to access the low-altitude service beam sent by the cluster slave base station to be accessed for service data communication, thereby ensuring the signal quality of the low-altitude service beam and improving the low-altitude communication performance.

[0125] In an exemplary embodiment, when a low-altitude cluster switching trigger condition is met, an inter-cluster switching request is sent to a first cluster main base station through a second cluster main base station that is currently performing low-altitude communication, including: when a signal quality parameter between a user device and the second cluster main base station that is currently performing low-altitude communication meets the low-altitude cluster switching trigger condition, generating an inter-cluster switching request based on actual motion information of the user device; sending the inter-cluster switching request to the second cluster main base station, the inter-cluster switching request is used to instruct the second cluster main base station to forward the inter-cluster switching request to the first cluster main base station to perform inter-cluster switching.

[0126] Among them, the actual motion information may be the motion information corresponding to the historical moment actually generated during the operation of the user equipment in the low-altitude communication network. Optionally, during the current low-altitude communication between the user equipment and the second cluster main base station, the user equipment may detect the signal quality parameters between the user equipment and the second cluster main base station to determine whether the low-altitude cluster switching trigger condition is met through the signal quality parameters. For example, the RSRP and / or SINR of the broadcast beam of the second cluster main base station may be detected. When the values ​​of RSRP and / or SINR are lower than the preset threshold value, it may be determined that the low-altitude cluster switching trigger condition is met. The user equipment may obtain its own actual motion information and generate an inter-cluster switching request based on the actual motion information. The user equipment may send an inter-cluster switching request to the second cluster main base station, so that the second cluster main base station forwards the inter-cluster switching request to the first cluster main base station to be subjected to inter-cluster switching.

[0127] In this embodiment, when the user equipment determines that the low-altitude cluster switching trigger condition is met based on the signal quality parameters between the user equipment and the second cluster main base station, the user equipment generates an inter-cluster switching request based on the actual motion information, and forwards the inter-cluster switching request to the first cluster main base station through the second cluster main base station, so that the low-altitude cluster switching can be performed in time by reporting the inter-cluster switching request, ensuring the low-altitude network signal quality, thereby improving the low-altitude communication performance.

[0128] In an exemplary embodiment, Figure 7 As shown, a low-altitude communication method is provided, and the method is applied to Figure 1 Taking the second cluster of master base stations in the example as an example, the method includes the following steps 702 to 704. Among them:

[0129] Step 702: Receive an inter-cluster handover request sent by a user equipment, and forward the inter-cluster handover request to a first cluster master base station.

[0130] The inter-cluster handover request is a request message for requesting low-altitude cluster handover. The inter-cluster handover request can be sent by the user equipment to the cluster master base station performing low-altitude communication. Exemplarily, during the process of low-altitude communication between the second cluster master base station and the user equipment, the second cluster master base station can receive the inter-cluster handover request sent by the user equipment and forward the inter-cluster handover request to the first cluster master base station.

[0131] Step 704, receiving the first base station information and the second base station information sent by the first cluster main base station in response to the inter-cluster switching request, and forwarding the first base station information and the second base station information to the user equipment; wherein the first base station information is the base station information of the first cluster main base station, and the first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication, and the second base station information is the base station information of the target cluster slave base station, and the second base station information is used to instruct the user equipment to access the low-altitude service beam sent by the target cluster slave base station for service data communication, and the target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

[0132] Optionally, the second cluster master base station may receive base station information sent by the first cluster master base station in response to the inter-cluster switching request, and the base station information may include first base station information corresponding to the first cluster master base station and second base station information corresponding to the target cluster slave base station. The second cluster master base station may forward the first base station information and the second base station information to the user equipment, so that the user equipment can access the low-altitude control beam sent by the first cluster master base station for control signal communication, and access the low-altitude service beam sent by the target cluster slave base station for service data communication.

[0133] In the above-mentioned low-altitude communication method, the second cluster main base station forwards the inter-cluster switching request sent by the user equipment to the first cluster main base station, and forwards the first base station information and the second base station information sent by the first cluster main base station to the user equipment, so as to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication through the first base station information, and to instruct the user equipment to access the low-altitude service beam for service data communication through the second base station information. During the low-altitude communication process, if the first cluster main base station itself does not meet the service requirements, the low-altitude control beam and the low-altitude service beam in the low-altitude cluster are separated, and are sent by the first cluster main base station and the target cluster slave base station in the same low-altitude cluster, respectively, which can reduce the frequent switching of the control beam, reduce the service conflict between the low-altitude network and the ground network, ensure the signal quality of the low-altitude network, and thus improve the low-altitude communication performance.

[0134] In an exemplary embodiment, the low-altitude communication method also includes: receiving first base station information sent by a first cluster main base station, and forwarding the first base station information to a user device; wherein the first base station information is used to instruct the user device to access a low-altitude control beam and a low-altitude service beam sent by the first cluster main base station.

[0135] The first base station information is the base station information corresponding to the first cluster main base station. Exemplarily, the second cluster main base station can receive the first base station information sent by the first cluster main base station, and the second cluster main base station can forward the first base station information to the user equipment, and the user equipment can access the low-altitude control beam and the low-altitude service beam sent by the first cluster main base station to communicate control signals through the accessed low-altitude control beam and communicate service data through the accessed low-altitude service beam.

[0136] In this embodiment, the second cluster main base station forwards the first base station information sent by the first cluster main base station to the user equipment, so that the user equipment can access the low-altitude control beam and the low-altitude service beam sent by the first cluster main base station. This can reduce the frequent switching of the control beam, reduce the service conflict between the low-altitude network and the ground network, ensure the low-altitude network signal quality, and thus improve the low-altitude communication performance.

[0137] The present application also provides an application scenario, which applies the above-mentioned low-altitude communication method. Specifically, the application of the low-altitude communication method in the application scenario is as follows:

[0138] In the 5G+ low-altitude network and ground network joint networking scenarios, low-altitude terminals (drones, low-altitude aircraft, etc.) are not only used for logistics distribution, but also for meteorological and agricultural monitoring, emergency communications and rescue operations, etc.; for these joint networking scenarios, due to conflicts and interference between ground services and low-altitude services, the signal quality of low-altitude networks and ground networks is reduced, thereby affecting data transmission rate and reliability, and seriously affecting the user experience of low-altitude networks and ground networks.

[0139] like Figure 8 As shown, the current low-altitude communication network is based on the existing 5G+ communication network's coverage of ground users while taking into account low-altitude coverage. 3.5G uses dual carriers, that is, carrier 1 (F1) covers ground users. Since the low-altitude coverage is the LOS path, the air loss is relatively small relative to the ground propagation loss. The spacing between low-altitude base stations is generally 3 to 5 times that of ground base stations. Therefore, some fixed locations (whose spacing is 3 to 5 times that of ground base stations) are equipped with ground and air broadcast beams on carrier 2 (F2) of the ground base station at both ends, and the service beams are dynamically shared to cover both ground users and low-altitude drone users. However, when the load of the ground base station carrier 2 at the fixed location for ground users increases or the ground base station carrier 2 performs 2CC (Component Carrier) or 3CC carrier aggregation (5G-A / 5G+) according to business needs, the ground base station carrier 2 cannot meet the needs of low-altitude business, which seriously affects the communication performance of the low-altitude network and the user experience of the low-altitude network. To this end, the low-altitude communication method provided in the present application involves a process of improving low-altitude communication performance by separating the control beam and service beam based on a low-altitude cluster, which can greatly reduce the service conflicts between the ground network and the low-altitude network, reduce mutual interference, reduce the frequent switching of control beams, and improve the throughput of UAV services. It can significantly improve the low-altitude network performance and user perception, and reduce the cost of construction and optimization of low-altitude networks and ground networks.

[0140] At present, the low-altitude communication network uses the existing 5G+ ground network to cover both ground and low-altitude users. The 3.5G network adopts a dual-carrier design, in which carrier 1 covers ground users, and carrier 2 provides ground and low-altitude broadcast beams at the same time at a fixed position. However, when the ground user load of carrier 2 increases or 2CC / 3CC carrier aggregation is performed, it cannot meet the low-altitude business needs, thereby affecting the communication performance and user experience of the low-altitude network. The present application is related to improving the low-altitude communication performance based on the separation of the control beam and the service beam of the low-altitude cluster, and involves a new network architecture that converts the ground base station into a low-altitude cluster master base station and a low-altitude cluster slave base station. When the drone is flying at low altitude, inter-cluster switching and separation of the control beam and the service beam within the cluster are realized according to the drone flight information and the load of the base station (second carrier) in the low-altitude cluster, which solves the business conflict between the ground network and the low-altitude network, improves the utilization rate of the wireless resources of the entire system, improves the network performance and user experience, reduces the cost of network construction and optimization, and has good practical value and broad application prospects.

[0141] Specifically, the low-altitude communication method provided by the present application involves improving the low-altitude communication performance by separating the control beam and the service beam based on the low-altitude cluster, and specifically converting the ground base station into a new network architecture of a low-altitude cluster master base station (CM) + a low-altitude cluster slave base station (CS), that is, by establishing a mesh connection between the low-altitude cluster master base stations (CM) and a star connection between the low-altitude cluster master base station (CM) and its surrounding subordinate slave base stations (CS), an efficient low-altitude network structure is formed. When the drone is flying at low altitude, it can dynamically adjust the directional service beam serving it according to the drone flight information and the load of the base station (second carrier) in the low-altitude cluster, realize inter-cluster switching and separation of the control beam and the service beam in the low-altitude cluster, which not only solves the service conflict between the ground network and the low-altitude network, reduces the frequent switching of the control beam, and improves the drone service throughput, but also improves the system wireless resource utilization, improves the low-altitude network performance and user experience, reduces the network construction and optimization costs, and has good practical value and broad application prospects.

[0142] Specifically, a mesh connection is established between the low-altitude cluster master base stations (CM) and a star connection is established between the low-altitude cluster master base station (CM) and its surrounding subordinate slave base stations (CS), forming an efficient low-altitude network structure. Fig. 9 As shown, the coverage range in each dotted box may be a low-altitude cluster, and the low-altitude cluster may include multiple base stations, including a cluster master base station and multiple cluster slave base stations. For example, the cluster master base station CM(i) and multiple cluster slave base stations CS(i,1), CS(i,2), CS(i,3), ... CS(i,n) belong to the same low-altitude cluster; the cluster master base station CM(j) and multiple cluster slave base stations CS(j,1), CS(j,2), CS(j,3), ... CS(j,m) belong to the same low-altitude cluster. Between different low-altitude clusters, cluster master base stations can implement the switching of low-altitude control beams through inter-cluster handover. In the low-altitude cluster, the user equipment can access the low-altitude control beam (F2-LACB) of the second carrier of the cluster master base station for control signal communication, and the user equipment can also access the low-altitude service beam (F2-LAUB) of the second carrier of the cluster slave base station for service data communication. According to the UAV flight information and the load of the base station (second carrier) in the low-altitude cluster, especially when there is a 5G-A base station for 2CC or 3CC carrier aggregation service scenario, a method for inter-cluster switching and separation of the control beam LACB and the service beam LAUB in the low-altitude cluster is performed, that is, the control beam always resides on the main base station in the cluster, and the service beam dynamically resides on the slave (or main) base station in the cluster according to the UAV flight information and the load of the base station in the cluster. This not only solves the service conflict between the ground network and the low-altitude network, reduces the frequent switching of the control beam, and improves the UAV service throughput, but also improves the low-altitude network performance and user experience, improves the system wireless resource utilization, and saves network construction and optimization costs.

[0143] Specifically, Fig. 9 As shown, the low-altitude communication method provided by the present application may include:

[0144] 1) The ground base station (second carrier) currently used as a fixed low-altitude base station is set as the low-altitude cluster master (CM) base station. All low-altitude cluster master (CM) base stations are configured with broadcast beams for both the ground and the air. Specifically, they can be configured as A:B type broadcast beams. For example, there are A+B=7 broadcast beams in total, which are configured as A:B (4:3) type broadcast beams, i.e. A (4) broadcast beams for the ground and B (3) broadcast beams for the air. A:B can also be 5:2, 6:1 or 3:4, 2:5, etc. The service beams are dynamically shared in real time.

[0145] 2) The ground base stations (second carrier) around the low-altitude cluster master base station CM(i) are set as low-altitude cluster slave (CS) base stations subordinate to the low-altitude cluster master base station CM(i), such as CS(i,1), CS(i,2), CS(i,3), ..., CS(i,k), and the low-altitude cluster master base station CM(i) is connected to its subordinate low-altitude cluster slave CS(i,k) base stations into a star structure, and the low-altitude cluster master base stations are connected to each other into a mesh structure;

[0146] 3) The drone UE is flying at low altitude, for example, from the right low altitude cluster to the left low altitude cluster. When the drone UE measures the broadcast beam RSRP or / and SINR of the currently serving low altitude cluster master base station CM(j) (LACB low altitude control beam always resides on the master base station in the cluster) at the boundary between low altitude clusters and is lower than the corresponding threshold value, it initiates a low altitude cluster handover request and reports the drone's flight direction information FDI together;

[0147] 4) After the currently serving low-altitude cluster master base station (CM(j) receives the inter-cluster handover request initiated by the drone UE, it notifies the adjacent low-altitude cluster master base station CM(i) through the inter-base station link;

[0148] 5) After the low-altitude cluster master base station CM(i) receives a handover request from the low-altitude cluster master base station CM(j), if the load of this low-altitude cluster master base station CM(i) is light and meets the service requirements of the UAV UE, then the number of this low-altitude cluster master base station CM(i) is notified to the UAV UE through the low-altitude cluster master base station CM(j). If the load of this low-altitude cluster master base station CM(i) is heavy and does not meet the service requirements of the UAV UE, then the low-altitude cluster inner control beam LACB and the service beam LAUB are separated, that is, according to the load conditions of all slave base stations under this low-altitude cluster obtained by historical query or real-time query, 1 or more low-altitude cluster slave base stations CS(i,k) (1 <= k < max(CS(i,k))) with light load and meeting the service requirements of the UAV UE are notified to be dynamically configured into 1 directional service beam LAUB for the sky. After obtaining the current position, speed and direction of the UAV UE based on the flight direction information FDI of the UAV, the moving trajectory and position change of the UAV UE are predicted using an algorithm (such as a machine learning algorithm). Then each slave base station respectively sends 1 narrow directional service beam LAUB to align with and track the UAV UE. The directional service beam LAUB needs to adjust the LAUB beam direction, length (power), width, etc.; and the number of 1 (or more) low-altitude cluster slave base stations CS(i,k) is notified to the UAV UE through the CM(j) base station;

[0149] 6) After the UAV UE receives the number(s) of 1 (or more) low-altitude cluster slave base stations CS(i,1), CS(i,2),..., CS(i,k) sent, it measures the received signal strength RSRP or (and) the signal-to-interference-plus-noise ratio SINR of the corresponding directional service beam LAUB of the adjacent 1 (or more) low-altitude cluster slave base stations and selects the low-altitude cluster slave base station number corresponding to the maximum value, such as CS(i,n). Then the UAV UE initiates an access to the directional service beam LAUB corresponding to the low-altitude cluster slave base station CS(i,n) with the maximum value. After the access is successful, the uplink and downlink UAV services start on the directional service beam LAUB.

[0150] Among them, since low-altitude coverage is usually line-of-sight propagation (LOS) and the air loss is relatively small, the distance between low-altitude base stations is usually 3 to 5 times that of ground base stations. This is the basis for inter-cluster switching and the separation of control beams and service beams within a cluster; moreover, the switching conditions in this application can be based on service beam RSRP, service beam SINR, and service beam RSRP&SINR. In addition, the low-altitude control beam LACB anchor point is on the main base station in the cluster, and the low-altitude service beam LAUB is dynamically selected on different slave base stations in the cluster to achieve dynamic separation of the low-altitude control beam LACB and the low-altitude service beam LAUB. When the low-altitude service beam LAUB is dynamically selected on the main base station in the cluster. If there are 8 broadcast beams, the A:B type broadcast beams to the ground and to the air can be configured as 6:2, 5:3, 4:4, 3:5, 2:6, etc.

[0151] The low-altitude communication method provided by the present application realizes the separation of the low-altitude control beam LACB and the low-altitude service beam LAUB within the low-altitude cluster, wherein the low-altitude control beam LACB always resides on the main base station in the cluster, and LACB is responsible for the switching of the drone UE between low-altitude clusters. Moreover, the low-altitude service beam LAUB allows the drone UE service to dynamically reside on the slave (or master) base station in the cluster according to the drone flight information and the load of the base station in the cluster, thereby increasing the up and down throughput of the drone UE service and reducing the frequent switching of the low-altitude control beam LACB, thereby eliminating the conflict between the ground network and the low-altitude network service, reducing the frequent switching of the control beam, improving the throughput of the drone service, improving the low-altitude network performance and user experience, and at the same time improving the utilization rate of the system wireless resources, saving network construction and optimization costs.

[0152] like Fig.10 As shown, the low-altitude communication method provided by the present application may include:

[0153] 1) Configure the cluster master base station in the low-altitude cluster. Specifically, the ground base station (second carrier) can be configured as the low-altitude cluster master base station (CM), and the ground and air broadcast beams of the ground base station are configured as A:B type, and the service beam is configured for real-time dynamic sharing;

[0154] 2) configuring the cluster slave base stations in the low-altitude cluster, specifically, configuring the low-altitude cluster master base stations (CM) to form a mesh structure; configuring the base stations around the low-altitude master base station (CM) as low-altitude cluster slave base stations (CS), forming a star structure with the low-altitude cluster master base station (CM);

[0155] 3) Base station initialization processing, specifically, the initialization process of the low-altitude cluster master base station and the low-altitude cluster slave base station can be executed;

[0156] 4) The user equipment initiates a low-altitude inter-cluster handover request and reports the flight direction information. Specifically, when the UAV measures the RSRP or (with) SINR of the broadcast beam LACB of the currently serving low-altitude cluster master base station (CM) at the low-altitude inter-cluster boundary to be lower than the corresponding threshold value, it initiates a low-altitude inter-cluster handover request and reports the flight direction information (FDI) at the same time;

[0157] 5) The cluster master base station configures the transmission of the broadcast beam according to the load. After receiving the inter-cluster switching request, the adjacent low-altitude cluster master base station CM(i) checks its own load; if its own load is light and can meet the service requirements of the drone, it directly notifies the drone LACB and LAUB to switch to the low-altitude cluster master base station CM(i); if its own load is heavy, LACB and LAUB are separated, and the load of all slave base stations under the low-altitude cluster is checked. One or more low-altitude slave base stations (CS(i,k)) with light loads and meeting the service requirements of the drone are selected and their service beams are dynamically configured into directional service beams LAUB to the air; and the movement trajectory of the drone is predicted using a machine learning algorithm;

[0158] 6) The cluster slave base station sends a directional service beam. Specifically, each slave base station sends a narrower directional service beam LAUB to aim at and track the drone. The directional service beam LAUB needs to adjust the LAUB beam direction, length (power), width, etc.; and notify the drone of one (or more) low-altitude cluster slave base station numbers CS(i,k) through CM(i) and CM(j) base stations;

[0159] 7) The user equipment accesses. After receiving the low-altitude cluster slave base station number CS(i,k), the specific drone measures the RSRP or (and) SINR of the corresponding directional service beam LAUB, selects the optimal low-altitude cluster slave base station (such as CS(i,n)), and initiates an access request to its directional service beam LAUB; after successful access, the uplink and downlink drone services are started on the directional service beam LAUB;

[0160] 8) Repeat steps 4) to 7) to continuously optimize low-altitude communication performance, improve drone service throughput, reduce the frequent switching of control beams LACB, eliminate service conflicts between ground and low-altitude networks, and improve overall system resource utilization and user experience.

[0161] In the low-altitude communication method provided by the present application, a method for improving the low-altitude communication performance by separating the control beam and the service beam based on the low-altitude cluster is introduced. The low-altitude cluster main base station and the surrounding low-altitude cluster slave base stations are connected into a star structure, and a mesh structure is connected between the low-altitude cluster main base stations to achieve efficient organization of the network topology, which is beneficial to the inter-cluster switching of the low-altitude cluster and the separation of the control beam and the service beam within the cluster. Specifically, the ground base station is configured as a low-altitude cluster main (CM) base station, and the ground and air broadcast beams are configured as A:B type (A and B can be changed dynamically) to achieve dynamic sharing of the directional service beam of the low-altitude cluster slave (CS) base station. The low-altitude communication method provided by the present application is applicable to a variety of broadcast beam configuration combinations (such as 6:2, 5:3, 4:4, etc.), which can ensure the versatility and flexibility of the low-altitude communication method.

[0162] Furthermore, at the boundary of the low-altitude cluster, when the measured broadcast beam signal strength RSRP or (with) signal to interference noise ratio SINR is lower than the corresponding threshold, an inter-cluster switching request is initiated and the flight direction information FDI is reported. Among them, the current serving base station notifies the adjacent low-altitude master (slave) base station mechanism through the inter-station chain and the intra-station chain to realize the inter-cluster switching and the separation of the control beam and the service beam within the cluster. By separating the control beam from the service beam, the frequent switching of the control beam is reduced, making the management and allocation of network resources more flexible, and improving the service throughput of the drone. The control beam LACB always resides in the main base station under the low-altitude cluster and is responsible for inter-cluster switching. The service beam LAUB dynamically adjusts the beam direction, length (power), width and other parameters according to the flight information of the drone and the load of the slave base station under the low-altitude cluster. After receiving the inter-cluster switching request and flight direction information FDI reported by the drone, the target low-altitude cluster master base station dynamically adjusts the service beam configuration of the slave (or master) base station under the target low-altitude cluster that meets the drone service requirements according to the load of all slave (or master) base stations under the target low-altitude cluster.

[0163] Moreover, the current service base station combines the broadcast beam signal strength RSRP or (with) signal to interference and noise ratio SINR information reported by the drone, and negotiates with the adjacent low-altitude cluster master base station to select the best broadcast beam (control beam) for cluster switching strategy (optimized switching). According to the flight direction information of the drone, the machine learning algorithm is used to predict the flight trajectory of the drone, and the low-altitude cluster slave base station dynamically configures the directional service beam LAUB and aligns and tracks the drone. According to the received low-altitude cluster slave base station number, the drone measures the service beam signal strength RSRP or (with) signal to interference and noise ratio SINR and selects the optimal slave base station and service beam for access. In this way, the service conflict between the ground network and the low-altitude network can be effectively eliminated, the same-frequency interference can be reduced, and the overall performance of the 5G+ / 6G network can be improved. By improving the network switching mechanism, beam and resource adjustment and management mechanism, the experience of drone users in the low-altitude network can be improved. Through intelligent switching and scheduling strategies, the overall resource utilization efficiency of the system can be improved. By reducing the cost of ground network and low-altitude network construction and optimization, more stable and efficient network services can be provided to users in different fields.

[0164] The low-altitude communication method provided in the present application improves the low-altitude communication performance by separating the control beam from the service beam based on the low-altitude cluster, and transforms the ground base station into a new network architecture of a low-altitude cluster master base station and a low-altitude cluster slave base station. When the drone is flying at low altitude, inter-cluster switching and separation of the control beam and service beam within the cluster are realized according to the flight information of the drone and the load of the base station (second carrier) within the low-altitude cluster, which solves the service conflict between the ground network and the low-altitude network, reduces the frequent switching of the control beam, improves the service throughput of the drone, improves the utilization rate of the wireless resources of the entire system, improves the network performance and user experience, reduces the cost of network construction and optimization, and has good practical value and broad application prospects.

[0165] In addition, in the low-altitude communication method provided by the present application, inter-cluster switching and separation of the control beam and the service beam within the cluster are realized according to the flight information of the drone and the load of the base station in the low-altitude cluster, thereby improving the network dynamic management capability under the joint networking of the ground network and the low-altitude network, improving the overall network performance, and improving the utilization rate of wireless resources; by dynamically separating the control beam from the service beam, the network architecture is adjusted in real time, the service conflict between the ground network and the low-altitude network is eliminated, mutual interference is reduced, and the throughput of the drone service is enhanced; by optimizing the switching strategy, the frequent switching of the control beam is reduced, the communication quality is improved, the continuity of data transmission is improved, and a more stable and efficient user experience is provided; the optimized switching of drones in low-altitude environments is supported, and the flexibility and adaptability of the joint networking of the ground network and the low-altitude network are improved; the directional service beam is dynamically allocated to achieve system resource optimization, improve the utilization rate of system resources, and reduce network congestion; optimization is performed on the existing 5G+ network, with strong compatibility and no need for large-scale transformation, reducing the network construction and optimization costs of the low-altitude network and the ground network, saving the operator's capital investment, and having high practical value.

[0166] The low-altitude communication method provided by the present application, in the 5G+ / 6G low-altitude network and ground network joint networking scenario, separates the control beam from the service beam within the cluster, reduces the frequent switching of the control beam, and adjusts the network architecture in real time, making the management and allocation of network resources more flexible, eliminating the service conflict between the ground network and the low-altitude network, reducing mutual interference, and providing overall network performance; provides a new low-altitude base station network structure, combining the inter-cluster base station mesh structure and the low-altitude cluster base station star structure to improve network reliability and flexibility. Moreover, based on the flight information of the drone, machine learning is used to predict the flight trajectory of the drone, and the second carrier load condition (2CC / 3CC) monitoring is introduced to make intelligent judgments, optimize the switching and selection of low-altitude base stations, ensure the dynamic selection of the best service connection for low-altitude terminals, and provide a more stable and efficient user experience; according to the flight information of the drone and the load condition of the base station within the low-altitude cluster (beam allocation strategy perceived by flight information and load condition), the directional service beam is selectively and dynamically adjusted, which improves the continuity of data transmission, and improves the utilization rate of wireless resources and spectrum efficiency. The low-altitude communication method provided in this application is applicable to a variety of broadcast beam configuration combinations (such as 6:2, 5:3, 4:4, etc.), which improves the versatility and flexibility of the technical solution; by combining drone flight information and real-time load monitoring mechanism, the network architecture and wireless resources are dynamically optimized and adjusted, reducing the cost of network construction and optimization while maintaining the optimal performance of the entire network.

[0167] The low-altitude communication method provided in the present application effectively solves the service conflicts and co-frequency interference problems in the joint networking of low-altitude networks and ground networks, improves the reliability and stability of the entire network, and improves the satisfaction of ground users and low-altitude users; improves the efficiency of the entire communication system and the communication quality between drones and low-altitude networks; adjusts the network structure in real time through inter-cluster switching and separation of control beams and service beams within clusters, supports low-altitude networks of large-scale drones, makes full use of spectrum resources, improves wireless resource utilization, and achieves higher communication capacity and frequency efficiency; optimizes the entire network resource configuration through resource reuse and dynamic management, reduces the construction, operation and optimization costs of low-altitude networks and ground networks, and improves economic benefits. The low-altitude communication method provided in this application can provide reliable network support for application scenarios such as intelligent transportation, smart logistics and agricultural monitoring, adapt to different flight conditions, and expand the application potential of drone technology in different fields and scenarios; the deployment and implementation of the system will promote technological innovation, promote technological progress and industrial development of low-altitude networks, and promote the popularization of drone applications; through scientific layout and dynamic adjustment, it will improve the overall performance and benefits of the overall communication system, and is committed to improving the reliability and flexibility of the future mobile communication system 6G, providing support for the development of future network 6G, and has high promotion and application value.

[0168] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0169] Based on the same inventive concept, the embodiment of the present application also provides a low-altitude communication device for implementing the low-altitude communication method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more low-altitude communication device embodiments provided below can refer to the limitations on the low-altitude communication method above, and will not be repeated here.

[0170] In an exemplary embodiment, Fig.11 As shown, a low-altitude communication device 1100 is provided, which is applied to a first cluster master base station, including: an inter-cluster handover request receiving module 1102, a service beam configuration module 1104 and a base station information sending module 1106, wherein:

[0171] The inter-cluster handover request receiving module 1102 is configured to receive an inter-cluster handover request forwarded by the second cluster master base station, where the inter-cluster handover request is sent by the user equipment to the second cluster master base station;

[0172] The service beam configuration module 1104 is used to control the target cluster slave base station to send a low-altitude service beam for the user equipment when the first cluster master base station itself does not meet the service requirements corresponding to the inter-cluster handover request, and the target cluster slave base station is a cluster slave base station that meets the service requirements in the low-altitude cluster to which the first cluster master base station belongs;

[0173] The base station information sending module 1106 is used to send the first base station information of the first cluster main base station and the second base station information of the target cluster slave base station to the user equipment through the second cluster main base station. The first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication, and the second base station information is used to instruct the user equipment to access the low-altitude service beam for service data communication.

[0174] In an exemplary embodiment, the inter-cluster switching request includes actual motion information of the user equipment; the service beam configuration module 1104 is also used to determine the predicted motion information of the user equipment based on the actual motion information; generate a beam configuration instruction according to the predicted motion information; and send the beam configuration instruction to the target cluster slave base station, the beam configuration instruction being used to instruct the target cluster slave base station to send a low-altitude service beam for the user equipment.

[0175] In an exemplary embodiment, the service beam configuration module 1104 is also used to determine the load of each cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs when the load of the first cluster main base station itself does not meet the service requirements corresponding to the inter-cluster switching request; determine at least one target cluster slave base station that meets the service requirements from each cluster slave base station based on the load of each cluster slave base station; and control at least one target cluster slave base station to send a low-altitude service beam for a user device.

[0176] In an exemplary embodiment, the service beam configuration module 1104 is also used to send the first base station information to the user equipment through the second cluster main base station when the first cluster main base station itself meets the service requirements; wherein the first base station information is used to instruct the user equipment to access the low-altitude control beam and low-altitude service beam sent by the first cluster main base station.

[0177] In an exemplary embodiment, Fig.12 As shown, a low-altitude communication device 1200 is provided, which is applied to a user equipment, including: an inter-cluster handover request sending module 1202 and a beam access module 1204, wherein:

[0178] The inter-cluster handover request sending module 1202 is used to send the inter-cluster handover request to the first cluster master base station through the second cluster master base station currently performing low-altitude communication when the low-altitude cluster handover triggering condition is met;

[0179] The beam access module 1204 is used to access the low-altitude control beam sent by the first cluster master base station for control signal communication, and access the low-altitude service beam sent by the target cluster slave base station for service data communication when receiving the first base station information and the second base station information sent by the first cluster master base station through the second cluster master base station;

[0180] Among them, the first base station information is the base station information of the first cluster main base station, and the second base station information is the base station information of the target cluster slave base station. The target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

[0181] In an exemplary embodiment, the beam access module 1204 is further used to access the low-altitude control beam and low-altitude service beam sent by the first cluster main base station when receiving the first base station information sent by the first cluster main base station through the second cluster main base station.

[0182] In an exemplary embodiment, the target cluster slave base station includes at least one beam access module 1204, which is also used to determine the respective signal quality parameters between the target cluster slave base station; determine the cluster slave base station to be accessed from the target cluster slave base station based on the respective signal quality parameters between the target cluster slave base station; and access the low-altitude service beam sent by the cluster slave base station to be accessed to communicate service data.

[0183] In an exemplary embodiment, Fig.13 As shown, a low-altitude communication device 1300 is provided, which is applied to the second cluster master base station, including: an inter-cluster handover request forwarding module 1302 and a base station information forwarding module 1304, wherein:

[0184] An inter-cluster handover request forwarding module 1302, configured to receive an inter-cluster handover request sent by a user equipment, and forward the inter-cluster handover request to a first cluster master base station;

[0185] The base station information forwarding module 1304 is configured to receive the first base station information and the second base station information sent by the first cluster master base station in response to the inter-cluster handover request, and forward the first base station information and the second base station information to the user equipment;

[0186] Among them, the first base station information is the base station information of the first cluster main base station, and the first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication. The second base station information is the base station information of the target cluster slave base station, and the second base station information is used to instruct the user equipment to access the low-altitude service beam sent by the target cluster slave base station for service data communication. The target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

[0187] In an exemplary embodiment, the base station information forwarding module 1304 is also used to receive the first base station information sent by the first cluster main base station, and forward the first base station information to the user equipment; wherein the first base station information is used to instruct the user equipment to access the low-altitude control beam and the low-altitude service beam sent by the first cluster main base station.

[0188] Each module in the various low-altitude communication devices mentioned above can be implemented in whole or in part by software, hardware, or a combination thereof. Each module mentioned above can be embedded in or independent of a processor in a communication device in the form of hardware, or can be stored in a memory in a communication device in the form of software, so that the processor can call and execute operations corresponding to each module mentioned above.

[0189] In an exemplary embodiment, a communication device is provided. The communication device may be an access network device such as a base station. The internal structure diagram thereof may be as shown in FIG. Fig.14 As shown. The communication device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the communication device is used to provide computing and control capabilities. The memory of the communication device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the communication device is used to store various data involved in the low-altitude communication method. The input / output interface of the communication device is used to exchange information between the processor and an external device. The communication interface of the communication device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a low-altitude communication method is implemented.

[0190] In an exemplary embodiment, a communication device is provided. The communication device may be a user equipment, and its internal structure diagram may be as shown in FIG. Fig.15As shown. The communication device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. Among them, the processor of the communication device is used to provide computing and control capabilities. The memory of the communication device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the communication device is used to exchange information between the processor and the external device. The communication interface of the communication device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (Near Field Communication, NFC) or other technologies. When the computer program is executed by the processor, a low-altitude communication method is implemented. The display unit of the communication device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the communication device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the communication device housing, or an external keyboard, touchpad or mouse.

[0191] Those skilled in the art will understand that Fig.14 or Fig.15 The structure shown in the figure is only a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the communication device to which the scheme of the present application is applied. The specific communication device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0192] In an exemplary embodiment, Fig.16 As shown, a low-altitude communication system 1600 is provided, including a user equipment 1602, a first cluster of main base stations 1604 and a second cluster of main base stations 1606, wherein:

[0193] The user equipment 1602 is configured to send an inter-cluster handover request to a second cluster master base station when a low-altitude cluster handover triggering condition is met;

[0194] The second cluster master base station 1606 is configured to forward the inter-cluster handover request to the first cluster master base station;

[0195] The first cluster master base station 1604 is configured to receive an inter-cluster handover request forwarded by the second cluster master base station, and control a target cluster slave base station to send a low-altitude service beam for a user equipment when the first cluster master base station itself does not meet the service requirements corresponding to the inter-cluster handover request, wherein the target cluster slave base station is a cluster slave base station that meets the service requirements in the low-altitude cluster to which the first cluster master base station belongs; and send the first base station information of the first cluster master base station and the second base station information of the target cluster slave base station to the second cluster master base station;

[0196] The second cluster main base station 1606 is further configured to receive the first base station information and the second base station information sent by the first cluster main base station, and forward the first base station information and the second base station information to the user equipment;

[0197] The user equipment 1602 is further configured to receive the first base station information and the second base station information forwarded by the second cluster main base station, access the low-altitude control beam sent by the first cluster main base station for control signal communication, and access the low-altitude service beam for service data communication.

[0198] In one embodiment, a computer-readable storage medium is provided, storing a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0199] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0200] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0201] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0202] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0203] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A low-altitude communication method, characterized in that: Applied to the first cluster of master base stations, the method includes: receiving an inter-cluster handover request forwarded by a second cluster master base station, where the inter-cluster handover request is sent by a user equipment to the second cluster master base station; When the first cluster master base station itself does not meet the service requirements corresponding to the inter-cluster handover request, control the target cluster slave base station to send a low-altitude service beam for the user equipment, and the target cluster slave base station is a cluster slave base station that meets the service requirements in the low-altitude cluster to which the first cluster master base station belongs; The first base station information of the first cluster main base station and the second base station information of the target cluster slave base station are sent to the user equipment through the second cluster main base station. The first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication, and the second base station information is used to instruct the user equipment to access the low-altitude service beam for service data communication.

2. The method according to claim 1, characterized in that The inter-cluster handover request includes actual movement information of the user equipment; the control target cluster sends a low-altitude service beam for the user equipment from the base station, including: Determining predicted motion information of the user equipment based on the actual motion information; generating a beam configuration instruction according to the predicted motion information; The beam configuration instruction is sent to the target cluster slave base station, where the beam configuration instruction is used to instruct the target cluster slave base station to send a low-altitude service beam for the user equipment.

3. The method according to claim 1, characterized in that The controlling the target cluster slave base station to send a low-altitude service beam for the user equipment when the first cluster master base station itself does not meet the service requirement corresponding to the inter-cluster handover request includes: When the load of the first cluster master base station itself does not meet the service requirement corresponding to the inter-cluster handover request, determine the load of each cluster slave base station in the low-altitude cluster to which the first cluster master base station belongs; Determining at least one target cluster slave base station that meets the service requirement from among the cluster slave base stations according to respective loads of the cluster slave base stations; Control at least one of the target clusters to send a low-altitude service beam for the user equipment from a base station.

4. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: When the first cluster of main base stations itself meets the service requirement, sending the first base station information to the user equipment through the second cluster of main base stations; The first base station information is used to instruct the user equipment to access the low-altitude control beam and the low-altitude service beam sent by the first cluster main base station.

5. A low-altitude communication method, characterized in that: Applied to user equipment, the method comprises: When the low-altitude cluster handover triggering condition is met, an inter-cluster handover request is sent to the first cluster master base station through the second cluster master base station currently performing low-altitude communication; Upon receiving the first base station information and the second base station information sent by the first cluster master base station through the second cluster master base station, accessing the low-altitude control beam sent by the first cluster master base station for control signal communication, and accessing the low-altitude service beam sent by the target cluster slave base station for service data communication; Among them, the first base station information is the base station information of the first cluster main base station, the second base station information is the base station information of the target cluster slave base station, and the target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

6. The method according to claim 5, characterized in that The method further comprises: Upon receiving the first base station information sent by the first cluster main base station through the second cluster main base station, access is made to the low-altitude control beam and the low-altitude service beam sent by the first cluster main base station.

7. The method according to claim 5 or 6, characterized in that: The target cluster includes at least one slave base station, and the accessing to the low-altitude service beam sent by the target cluster slave base station for service data communication includes: Determine the signal quality parameters between the target cluster and the slave base station; Determining a cluster slave base station to be accessed from the target cluster slave base station according to respective signal quality parameters between the target cluster slave base station and the target cluster slave base station; Access the low-altitude service beam sent by the cluster to be accessed from the base station to carry out service data communication.

8. A low-altitude communication method, characterized in that: Applied to the second cluster of master base stations, the method includes: receiving an inter-cluster handover request sent by a user equipment, and forwarding the inter-cluster handover request to a first cluster master base station; receiving first base station information and second base station information sent by the first cluster master base station in response to the inter-cluster handover request, and forwarding the first base station information and the second base station information to the user equipment; Among them, the first base station information is the base station information of the first cluster main base station, and the first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication. The second base station information is the base station information of the target cluster slave base station, and the second base station information is used to instruct the user equipment to access the low-altitude service beam sent by the target cluster slave base station for service data communication. The target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

9. The method according to claim 8, characterized in that The method further comprises: receiving the first base station information sent by the first cluster master base station, and forwarding the first base station information to the user equipment; The first base station information is used to instruct the user equipment to access the low-altitude control beam and the low-altitude service beam sent by the first cluster main base station.

10. A low-altitude communication device, characterized in that: Applied to a first cluster of master base stations, the device comprises: An inter-cluster handover request receiving module, configured to receive an inter-cluster handover request forwarded by a second cluster master base station, wherein the inter-cluster handover request is sent by a user equipment to the second cluster master base station; A service beam configuration module, used to control the target cluster slave base station to send a low-altitude service beam for the user equipment when the first cluster master base station itself does not meet the service requirements corresponding to the inter-cluster switching request, and the target cluster slave base station is a cluster slave base station that meets the service requirements in the low-altitude cluster to which the first cluster master base station belongs; A base station information sending module is used to send the first base station information of the first cluster main base station and the second base station information of the target cluster slave base station to the user equipment through the second cluster main base station, the first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication, and the second base station information is used to instruct the user equipment to access the low-altitude service beam for service data communication.

11. A low-altitude communication device, characterized in that: Applied to user equipment, the device comprises: An inter-cluster handover request sending module, configured to send an inter-cluster handover request to a first cluster master base station through a second cluster master base station currently performing low-altitude communication when a low-altitude cluster handover triggering condition is met; A beam access module is used to access the low-altitude control beam sent by the first cluster main base station for control signal communication, and access the low-altitude service beam sent by the target cluster slave base station for service data communication when receiving the first base station information and the second base station information sent by the first cluster main base station through the second cluster main base station; Among them, the first base station information is the base station information of the first cluster main base station, the second base station information is the base station information of the target cluster slave base station, and the target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

12. A low-altitude communication device, characterized in that: Applied to a second cluster of master base stations, the device comprises: An inter-cluster handover request forwarding module, configured to receive an inter-cluster handover request sent by a user equipment, and forward the inter-cluster handover request to a first cluster master base station; a base station information forwarding module, configured to receive first base station information and second base station information sent by the first cluster master base station in response to the inter-cluster handover request, and forward the first base station information and the second base station information to the user equipment; Among them, the first base station information is the base station information of the first cluster main base station, and the first base station information is used to instruct the user equipment to access the low-altitude control beam sent by the first cluster main base station for control signal communication. The second base station information is the base station information of the target cluster slave base station, and the second base station information is used to instruct the user equipment to access the low-altitude service beam sent by the target cluster slave base station for service data communication. The target cluster slave base station is a cluster slave base station in the low-altitude cluster to which the first cluster main base station belongs that meets the service requirements corresponding to the inter-cluster switching request.

13. A communication device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method of any one of claims 1 to 4, claims 5 to 7 or claims 8 to 9 are implemented.

14. A low altitude communication system, characterized in that: The system comprises a user equipment, a first cluster of master base stations and a second cluster of master base stations, wherein: The user equipment is configured to send an inter-cluster handover request to the second cluster master base station when a low-altitude cluster handover triggering condition is met; The second cluster master base station is used to forward the inter-cluster handover request to the first cluster master base station; The first cluster master base station is configured to receive the inter-cluster handover request forwarded by the second cluster master base station, and control the target cluster slave base station to send a low-altitude service beam for the user equipment when the first cluster master base station itself does not meet the service requirements corresponding to the inter-cluster handover request, wherein the target cluster slave base station is a cluster slave base station that meets the service requirements in the low-altitude cluster to which the first cluster master base station belongs; and send the first base station information of the first cluster master base station and the second base station information of the target cluster slave base station to the second cluster master base station; The second cluster main base station is further configured to receive the first base station information and the second base station information sent by the first cluster main base station, and forward the first base station information and the second base station information to the user equipment; The user equipment is also used to receive the first base station information and the second base station information forwarded by the second cluster main base station, access the low-altitude control beam sent by the first cluster main base station for control signal communication, and access the low-altitude service beam for service data communication.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method of any one of claims 1 to 4, claims 5 to 7 or claims 8 to 9 are implemented.

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