Low-altitude network co-frequency interference reduction method, equipment, device and storage medium

Abstract

The invention provides a low-altitude network co-frequency interference reduction method, equipment, a device and a storage medium, and relates to the technical field of communication. The method comprises the following steps: an airborne terminal obtains PCI numbers of a plurality of candidate cells corresponding to a base station, determines a cell with mode interference according to the plurality of PCI numbers, sends RRC connection information to the two cells respectively, and sends a same-frequency interference adjustment request to a core network device at the same time. And the first cell or the second cell determines the relative distance with the airborne terminal according to the first position information of the airborne terminal, and sends the relative distance to the core network equipment. And the core network equipment determines a main service cell according to the relative distance, and adjusts the configuration of the main service cell. According to the method, the main service cell is selected through interaction of the airborne terminal, the cell and the core network equipment, so that the core network equipment adjusts the main service cell, the mode interference phenomenon in a low-altitude network is reduced, and the problem that the user service rate experience is reduced due to the mode interference phenomenon is solved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a method, device, apparatus, and storage medium for reducing co-frequency interference in a low-altitude network. Background Art

[0002] Currently, the modulo interference caused by the Physical Cell Identifier (PCI) number has attracted extensive attention in the industry. For example, the modulo 3 interference under Long Term Evolution (LTE) of the Universal Mobile Telecommunications System and the modulo 4 and modulo 30 interferences under 5G. After performing modulo 4 and modulo 30 operations on the PCI number, if the results are the same, modulo 4 interference and modulo 30 interference will occur. Among them, the modulo 4 interference may cause conflicts in the Demodulation Reference Signal (DMRS), resulting in the decoding failure of the Physical Broadcast Channel (PBCH); the modulo 30 interference will cause interference between the Up-Link (UL) signal and the uplink signal, resulting in the decoding failure of the next Generation Node B (gNodeB or gNB).

[0003] The existing means to solve the modulo 3 / 4 / 30 interference problem caused by PCI mainly propose solutions for ground users, such as reducing the transmission power, adjusting the PCI numbers of adjacent cells, and adjusting the transmission angle of the base station to avoid it. The differences between the low-altitude network used by drones equipped with 5G airborne terminals and the ground network are not considered in the prior art. Due to the relatively pure environment and less occlusion in the low-altitude network, the 5G airborne terminal can receive signals sent by base stations dozens of kilometers away. At this time, the problem of modulo interference is inevitable.

[0004] Since the low-altitude airspace where the drone is located is relatively pure and has less occlusion, the 5G terminal on the drone often receives signals sent by base stations more than 10 kilometers away. Therefore, compared with ordinary mobile phone users on the ground, the 5G terminal in the low-altitude network is more likely to receive modulo 4 interference and modulo 30 interference caused by PCI numbers that have not been specifically optimized for the low-altitude network. The above two interferences will cause the interference elevation of the reference signal of the primary serving cell, further resulting in the decrease of the Signal to Interference plus Noise Ratio (SINR), leading to the degradation of the modulation mode, such as the degradation from 64QAM to 16QAM, and resulting in the decline of the user service rate experience. Summary of the Invention

[0005] The present application provides a method, device, apparatus and storage medium for reducing co-channel interference in a low-altitude network, so as to solve the problem that the user service rate experience decreases due to the generation of modulo interference in the low-altitude network.

[0006] In a first aspect, the present application provides a method for reducing co-channel interference in a low-altitude network, which is applied to an airborne terminal. The method includes:

[0007] Obtain the PCI numbers of multiple candidate cells corresponding to the base station;

[0008] Determine a first cell and a second cell according to the multiple PCI numbers, where the first cell and the second cell are cells with modulo interference;

[0009] Send RRC connection information to the first cell and the second cell respectively, so that the first cell and the second cell determine the relative distance from the airborne terminal according to the first position information of the airborne terminal carried in the RRC connection information. The RRC connection information includes: a modulo equality field and the first position information of the airborne terminal;

[0010] Send a co-channel interference adjustment request to the core network device, where the co-channel interference adjustment request carries an AUV field and the identification information of the first cell and the second cell.

[0011] Optionally, the determining the first cell and the second cell according to the multiple PCI numbers includes:

[0012] Perform modulo interference operation processing on the multiple PCI numbers to obtain the operation result corresponding to each PCI number;

[0013] Determine whether there is a modulo interference phenomenon among the operation results corresponding to the multiple PCI numbers;

[0014] If there is a modulo interference phenomenon among the operation results corresponding to the multiple PCI numbers, determine the two candidate cells with the modulo interference phenomenon as the first cell and the second cell.

[0015] In a second aspect, the present application provides a method for reducing co-channel interference in a low-altitude network, which is applied to the first cell or the second cell. The method includes:

[0016] Obtain the RRC connection information sent by the airborne terminal. The RRC connection information includes: a modulo equality field and the first position information of the airborne terminal, and the modulo equality field is used to indicate that there is a modulo interference phenomenon in the first cell or the second cell;

[0017] Determine the relative distance from the airborne terminal according to the first position information of the airborne terminal;

[0018] Send the relative distance to the core network device, so that the core network device adjusts the co-channel interference of the airborne terminal according to the relative distance.

[0019] Optionally, determining the relative distance from the airborne terminal according to the first position information of the airborne terminal includes:

[0020] Obtain the second position information of the first cell or the second cell, and determine the relative distance between the first cell or the second cell and the airborne terminal according to the first position information and the second position information.

[0021] In a third aspect, the present application provides a method for reducing co-channel interference in a low-altitude network, which is applied to a core network device. The method includes:

[0022] Obtain a co-channel interference adjustment request sent by an airborne terminal, where the co-channel interference adjustment request carries an AUV field and identification information of a first cell and a second cell, and the first cell and the second cell are cells with modulo interference phenomenon;

[0023] Obtain a first relative distance sent by the first cell and a second relative distance sent by the second cell;

[0024] Determine a primary serving cell from the first cell and the second cell according to the first relative distance and the second relative distance;

[0025] Adjust the configuration of the primary serving cell.

[0026] Optionally, determining the primary serving cell from the first cell and the second cell according to the first relative distance and the second relative distance includes:

[0027] Judge whether the first relative distance is greater than the second relative distance;

[0028] If the first relative distance is greater than the second relative distance, determine that the primary serving cell is the second cell;

[0029] If the first relative distance is not greater than the second relative distance, determine that the primary serving cell is the first cell.

[0030] Optionally, adjusting the configuration of the primary serving cell includes:

[0031] Control the primary serving cell to perform a lift adjustment of the transmission power;

[0032] Obtain the load condition of the primary serving cell, and judge whether the load of the primary serving cell reaches a preset load according to the load condition.

[0033] When the load of the primary serving cell does not reach the preset load, control the primary serving cell to adjust the electronic downtilt angle.

[0034] In a fourth aspect, the present application provides a device for reducing co-frequency interference in a low-altitude network, which is applied to an airborne terminal. The device includes:

[0035] An acquisition module: used to acquire the PCI numbers of a plurality of candidate cells corresponding to a base station;

[0036] A determination module: used to determine a first cell and a second cell according to a plurality of PCI numbers, where the first cell and the second cell are cells with modulo interference;

[0037] A sending module: used to send RRC connection information to the first cell and the second cell respectively, so that the first cell and the second cell determine the relative distance from the airborne terminal according to the first position information of the airborne terminal carried in the RRC connection information. The RRC connection information includes: a modulo equality field and the first position information of the airborne terminal;

[0038] The sending module is further used to send a co-frequency interference adjustment request to a core network device, where the co-frequency interference adjustment request carries an AUV field and the identification information of the first cell and the second cell.

[0039] Optionally, the device further includes: a processing module and a judgment module:

[0040] A processing module: used to perform modulo interference operation processing on a plurality of PCI numbers to obtain an operation result corresponding to each PCI number;

[0041] A judgment module: used to judge whether there is a modulo interference phenomenon among the operation results corresponding to a plurality of PCI numbers;

[0042] The determination module is further used to, if there is a modulo interference phenomenon among the operation results corresponding to a plurality of PCI numbers, determine the two candidate cells with the modulo interference phenomenon as the first cell and the second cell.

[0043] In a fifth aspect, the present application provides a device for reducing co-frequency interference in a low-altitude network, which is applied to a first cell or a second cell. The device includes:

[0044] An acquisition module: used to acquire the RRC connection information sent by an airborne terminal. The RRC connection information includes: a modulo equality field and the first position information of the airborne terminal. The modulo equality field is used to indicate that there is a modulo interference phenomenon in the first cell or the second cell;

[0045] A determination module, configured to determine a relative distance from an airborne terminal according to first position information of the airborne terminal;

[0046] A sending module, configured to send the relative distance to a core network device, so that the core network device performs co-frequency interference adjustment processing on the airborne terminal according to the relative distance.

[0047] Optionally, the obtaining module is further configured to obtain second position information of the first cell or the second cell, and determine a relative distance between the first cell or the second cell and the airborne terminal according to the first position information and the second position information.

[0048] In a sixth aspect, the present application provides a device for reducing co-frequency interference in a low-altitude network, which is applied to a core network device. The device includes:

[0049] An obtaining module, configured to obtain a co-frequency interference adjustment request sent by an airborne terminal, where the co-frequency interference adjustment request carries an AUV field and identification information of a first cell and a second cell, and the first cell and the second cell are cells with modulo interference phenomena;

[0050] The obtaining module is further configured to obtain a first relative distance sent by the first cell and a second relative distance sent by the second cell;

[0051] A determination module, configured to determine a primary serving cell from the first cell and the second cell according to the first relative distance and the second relative distance;

[0052] An adjustment module, configured to adjust the configuration of the primary serving cell.

[0053] Optionally, the device further includes: a judgment module:

[0054] The judgment module is configured to judge whether the first relative distance is greater than the second relative distance;

[0055] The determination module is further configured to determine that the primary serving cell is the second cell if the first relative distance is greater than the second relative distance;

[0056] The determination module is further configured to determine that the primary serving cell is the first cell if the first relative distance is not greater than the second relative distance.

[0057] Optionally, the device further includes: a control module:

[0058] The control module is configured to control the primary serving cell to perform a lift adjustment of the transmission power;

[0059] The obtaining module is further configured to obtain the load condition of the primary serving cell, and determine whether the load of the primary serving cell reaches a preset load according to the load condition.

[0060] The control module is further configured to control the primary serving cell to adjust the electronic downtilt angle when the load of the primary serving cell does not reach the preset load.

[0061] In a seventh aspect, the present application provides a device for reducing co-channel interference in a low-altitude network. The device includes:

[0062] A memory;

[0063] A processor;

[0064] Wherein, the memory stores computer-executable instructions;

[0065] The processor executes the computer-executable instructions stored in the memory to implement the method for reducing co-channel interference in a low-altitude network as described in the first aspect, the second aspect, and the third aspect and various possible implementation manners of the first aspect, the second aspect, and the third aspect.

[0066] In an eighth aspect, the present application provides a computer-readable storage medium, on which a computer program is stored. The computer program is executed by a processor to implement the method for reducing co-channel interference in a low-altitude network as described in the first aspect and various possible implementation manners of the first aspect.

[0067] For the method, device, apparatus, and storage medium for reducing co-channel interference in a low-altitude network provided by the present application, the airborne terminal obtains the PCI numbers of a plurality of candidate cells corresponding to a base station, determines a first cell and a second cell according to the plurality of PCI numbers, and respectively sends RRC connection information to the first cell and the second cell. The RRC connection information includes: a modulo-equality field and first position information of the airborne terminal, and at the same time sends a co-channel interference adjustment request to the core network device. The first cell or the second cell determines the relative distance between the first cell or the second cell and the airborne terminal according to the first position information of the airborne terminal. The first cell or the second cell sends the relative distance to the core network device. The core network device determines a primary serving cell from the first cell and the second cell according to the first relative distance and the second relative distance, and adjusts the configuration of the primary serving cell. This method selects a primary serving cell through the interaction between the airborne terminal, the first cell, the second cell, and the core network device, enables the core network device to adjust the primary serving cell, thereby reducing the modulo interference phenomenon in the low-altitude network and solving the problem of the decline in the user service rate experience caused by the modulo interference phenomenon. Description of the Drawings

[0068] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0069] Figure 1 Scenario schematic diagram of the method for reducing co-channel interference in a low-altitude network provided by this application;

[0070] Figure 2 Interaction schematic of the method for reducing co-channel interference in a low-altitude network provided by this application Figure 1 ;

[0071] Figure 3 Interaction schematic of the method for reducing co-channel interference in a low-altitude network provided by this application Figure 2 ;

[0072] Figure 4 Flow schematic diagram of the method for reducing co-channel interference in a low-altitude network provided by this application;

[0073] Figure 5 Structural schematic diagram of the device for reducing co-channel interference in a low-altitude network provided by this application;

[0074] Figure 6 Structural schematic diagram of the device for reducing co-channel interference in a low-altitude network provided by this application;

[0075] Figure 7 Structural schematic diagram of the device for reducing co-channel interference in a low-altitude network provided by this application;

[0076] Figure 8 Structural schematic diagram of the equipment for reducing co-channel interference in a low-altitude network provided by this application.

[0077] Through the above-mentioned drawings, specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Specific Embodiments

[0078] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. On the contrary, they are merely examples of the devices and methods consistent with some aspects of this application as detailed in the appended claims, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this invention without creative efforts fall within the scope of protection of this invention.

[0079] In the description, claims and the above drawings of the present invention, the terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, products or devices.

[0080] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0081] First, the nouns involved in the present application are explained:

[0082] Physical Cell Identifier, abbreviated as PCI, mainly refers to the radio signal by which the terminal in LTE differentiates different cells. In actual network deployment, it is inevitable to reuse PCI, which may cause conflicts (PCI conflicts) due to too small reuse distance for the same PCI. The purpose of PCI planning (physical cell ID planning) is to reasonably allocate PCI for each cell to ensure that the downlink signals of cells with the same frequency and the same PCI do not interfere with each other, and to avoid affecting the correct synchronization of the mobile phone and decoding the pilot channel of the normal serving cell.

[0083] Primary Synchronization Signal, abbreviated as PSS. The PSS occupies 6 RBs (i.e., 72 subcarriers) in the system bandwidth in the frequency domain and indicates the IDs within a physical cell group: Physical-layer id: 0, 1, 2 (3 in total). In the LTE network, PCI = PSS + 3 * SSS.

[0084] Mod 4 interference: The DMRS for PBCH on the subcarrier is calculated by mod 4, which may cause DMRS interference.

[0085] Mod 30 interference: The demodulation reference signal and the sounding reference signal are carried in the PUSCH channel. They are very important for signal estimation and demodulation. They are composed of 30 groups of basic ZC sequences. Based on 30 different sequence combinations, if the PCImod30 values of adjacent cells are the same, the same ZC sequence will be used, which will cause interference between the uplink demodulation reference signal and the sounding reference signal.

[0086] Signal to Interference plus Noise Ratio: Signal to Interference plus Noise Ratio, abbreviated as SINR. SINR refers to the ratio of the intensity of the received useful signal to the intensity of the received interfering signals (noise and interference), and can be simply understood as the "signal-to-noise ratio".

[0087] Quadrature Amplitude Modulation: Quadrature Amplitude Modulation, abbreviated as QAM. 64QAM refers to quadrature amplitude modulation, which is usually used to transmit downlink data. In a 6MHz channel, the transmission rate of 64QAM is very high, and it can support a peak transmission rate of up to 38.015Mbps. 16QAM refers to quadrature amplitude modulation, which is a QAM modulation method containing 16 symbols.

[0088] Currently, the modulo interference caused by the physical cell identification number has attracted extensive attention in the industry, such as the modulo 3 interference under the long-term evolution of the universal mobile communication technology and the modulo 4 and modulo 30 interferences in 5G. After performing modulo 4 and modulo 30 operations on the PCI number, if the results are the same, modulo 4 interference and modulo 30 interference will occur. Among them, modulo 4 interference may cause conflicts in the demodulation reference signal, resulting in the failure of physical broadcast channel decoding; modulo 30 interference will cause interference between the uplink signal and the uplink signal, resulting in the failure of gNB decoding.

[0089] The existing means to solve the modulo 3 / 4 / 30 interference problem caused by PCI mainly propose solutions for ground users, such as reducing the transmission power, adjusting the PCI number of adjacent cells, and adjusting the base station transmission angle to avoid it. The differences between the low-altitude network used by drones equipped with 5G airborne terminals and the ground network are not considered in the existing technologies. Due to the relatively pure environment and less occlusion in the low-altitude network, the 5G airborne terminal can receive signals sent by base stations dozens of kilometers away. At this time, the problem of modulo interference is inevitable.

[0090] Since the low-altitude airspace where the UAV is located is relatively pure and has less occlusion, the 5G terminal on the UAV often receives signals from base stations more than 10 kilometers away. Therefore, compared with ordinary mobile phone users on the ground, the 5G terminal in the low-altitude network is more likely to receive modulo-4 interference and modulo-30 interference caused by PCI numbers that have not been specifically optimized for the low-altitude network. Modulo-4 interference and modulo-30 interference occur when the PCI number is operated modulo 4 and modulo 30, respectively. If the results are the same, modulo-4 interference and modulo-30 interference will be generated. Among them, modulo-4 interference may cause conflicts in PBCH-DMRS, resulting in PBCH decoding failure; modulo-30 interference will cause interference between uplink signals, resulting in base station decoding failure; the above two interferences will cause an increase in the interference of the reference signal of the primary serving cell, which will further cause a decrease in the signal-to-interference-plus-noise ratio, resulting in a degradation of the modulation method, such as a downgrade from 64QAM to 16QAM, resulting in a decrease in the user service rate experience.

[0091] In view of the above problems, this application proposes a method for reducing co-channel interference in a low-altitude network. This method is specifically applied to the network interference situation in the low-altitude airspace where the UAV is located. Figure 1 It is a schematic diagram of the scenario of the method for reducing co-channel interference in the low-altitude network provided by this application. As Figure 1 shown, this scenario includes: base station 1, cell 1.1, cell 1.2, cell 1.3, airborne terminal 2, and core network device 3.

[0092] In this implementation scenario Figure 1 , the base station 1 sends a request to the UAV airborne terminal 2, and the UAV airborne terminal 2 replies to the request. During the reply process, modulo interference will occur between cell 1.1 - cell 1.3, resulting in a decrease in the user service rate. This method enables the airborne terminal to determine the interfering cell, send connection information to the cell, and at the same time send a co-channel interference adjustment request to the core network. Through the interaction between the airborne terminal, the cell, and the core network, the co-channel interference phenomenon in the UAV service under the low-altitude network is reduced.

[0093] The following will specifically describe the technical solution of this application and how the technical solution of this application solves the above technical problems through specific embodiments. These 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 this application will be described below with reference to the accompanying drawings.

[0094] Figure 2 It is an interaction diagram of the method for reducing co-channel interference in the low-altitude network provided by the embodiment of this application Figure 1 . As Figure 2 shown, this method includes:

[0095] S101: The airborne terminal obtains the PCI numbers of multiple candidate cells corresponding to the base station.

[0096] Among them, the airborne terminal refers to the airborne terminal of the unmanned aerial vehicle (UAV). The multiple candidate cells refer to the combination of cells with the same frequency included under this base station.

[0097] It can be understood that since the low-altitude airspace where the UAV is located is relatively pure and has less occlusion, the 5G airborne terminal of the UAV often receives signals transmitted from base stations more than 10 kilometers away. Therefore, compared with ordinary mobile phone users on the ground, the 5G terminal of the low-altitude network is more likely to receive modulo-4 interference and modulo-30 interference caused by the lack of special optimization of the low-altitude network for the PCI number. Before solving the modulo-4 interference and modulo-30 interference, first expand the fields of the UAV airborne terminal, base station, core network, and interfaces in each link, and add an AUV field to the signaling sent by the UAV airborne terminal to prompt the base station and core network that this terminal is a UAV airborne terminal and the service being executed is the UAV low-altitude network service.

[0098] It can be understood that the base station first sends a request to the airborne terminal, and the airborne terminal replies to the request. During the reply process, a modulo interference phenomenon occurs, where the modulo interference phenomenon includes modulo-4 interference and modulo-30 interference. After the modulo interference occurs, the UAV airborne terminal obtains the PCI numbers of all cells under this base station, analyzes the PSS in the PCI value, filters out the cells with the modulo interference phenomenon, and then solves the modulo interference phenomenon.

[0099] S102: The airborne terminal determines a first cell and a second cell according to multiple PCI numbers, and the first cell and the second cell are cells with modulo interference.

[0100] It can be understood that the airborne terminal obtains the PCI numbers of all cells under the base station, performs parsing processing on the PCI numbers, calculates the PCI numbers, and determines the two cells with the same PCI value as the first cell and the second cell, so that the first cell or the second cell can be adjusted subsequently to solve the modulo interference phenomenon.

[0101] S103: The airborne terminal sends RRC connection information to the first cell and the second cell respectively, so that the first cell and the second cell determine the relative distance from the airborne terminal according to the first position information of the airborne terminal carried in the RRC connection information, and the RRC connection information includes: a modulo equality field and the first position information of the airborne terminal.

[0102] It can be understood that after determining the first cell and the second cell, the airborne terminal sends RRC connection information to the two cells respectively. At this time, the RRC connection information carries a modulo equality field and reports the GPS position information of the airborne terminal at this time.

[0103] Among them, RRC connection information can be divided into RRC_Setup_Req and RRC_Conn_Req according to different entities. The modular equality field refers to the field of Modular equality. The GPS position information is also the first position information. For example, the position coordinate information of the airborne terminal can be (X 1 , Y 1 , Z 1 ).

[0104] It can be understood that the modular equality field is carried in the RRC_Setup_Req to inform the first cell and the second cell that there is a modular interference phenomenon between them, and they need to calculate the relative distance according to their own position information and the received airborne position information.

[0105] S104: The airborne terminal sends a co-frequency interference adjustment request to the core network device, where the co-frequency interference adjustment request carries the AUV field and the identification information of the first cell and the second cell.

[0106] Among them, the co-frequency interference adjustment request means that the airborne terminal discovers a modular interference phenomenon. At this time, the core network needs to adjust the cell to weaken the modular interference, so the co-frequency interference adjustment request is sent. The identification information of the first cell and the second cell refers to the modular equality field, and the two cells with modular interference can be determined according to the modular equality field.

[0107] It can be understood that the core network will receive multiple information from multiple terminals. Therefore, the co-frequency interference adjustment request sent by the airborne terminal carries the AUV field, so that the core network can determine that the service being processed at this time is the unmanned aerial vehicle low-altitude network service according to the AUV field, and determine the information of the cell with modular interference according to the modular equality field.

[0108] S105: The first cell or the second cell determines the relative distance from the airborne terminal according to the first position information of the airborne terminal.

[0109] It can be understood that the first cell and the second cell are in different positions, but the operation process for solving the modular interference phenomenon is the same. Here, the operation process of the first cell is taken as an example. After the first cell receives the fields of RRC_Conn_Req, Modular equality, and the first position information sent by the airborne terminal, the first cell responds and calculates the distance according to its own position information and the received first position information to determine the relative distance between the first cell and the airborne terminal.

[0110] S106: The first cell or the second cell sends the relative distance to the core network device, so that the core network device performs co-frequency interference adjustment processing on the airborne terminal according to the relative distance.

[0111] It is understandable that the first cell and the second cell respectively calculate the relative distance between themselves and the airborne terminal. After obtaining the distance calculation results, they respectively send the relative distance information to the core network device, so that the core network device can select a suitable cell for adjustment according to the relative distance information.

[0112] S107: The core network device determines the primary serving cell from the first cell and the second cell according to the first relative distance and the second relative distance.

[0113] Wherein, the first relative distance refers to the relative distance between the first cell and the airborne terminal, and the second relative distance refers to the relative distance between the second cell and the airborne terminal.

[0114] It is understandable that the core network device obtains the co-channel interference adjustment request sent by the airborne terminal, obtains the first relative distance sent by the first cell and the second relative distance sent by the second cell according to the identification information of the first cell and the second cell in the co-channel interference adjustment request, sorts the relative distance information, and selects the cell with the smaller relative distance as the primary serving cell according to the result.

[0115] S108: The core network device adjusts the configuration of the primary serving cell.

[0116] It is understandable that after the core network determines the primary serving cell, adjustment operations such as increasing the transmit power and judging the load situation of the primary serving cell are performed. The specific operation steps are described in detail below. After completing the configuration of the primary serving cell, the modulo 4 and 30 interference to the airborne terminal is reduced.

[0117] In the method for reducing co-channel interference in the low-altitude network provided in this embodiment, the airborne terminal obtains the PCI numbers of multiple candidate cells corresponding to the base station, determines the first cell and the second cell according to the multiple PCI numbers, and respectively sends RRC connection information to the first cell and the second cell. The RRC connection information includes: a modulo equality field and the first location information of the airborne terminal, and at the same time sends a co-channel interference adjustment request to the core network device. The first cell or the second cell determines the relative distance between itself and the airborne terminal according to the first location information of the airborne terminal. The first cell or the second cell sends the relative distance to the core network device. The core network device determines the primary serving cell from the first cell and the second cell according to the first relative distance and the second relative distance, and adjusts the configuration of the primary serving cell. This method selects the primary serving cell through the interaction between the airborne terminal, the first cell and the second cell and the core network device, enables the core network device to adjust the primary serving cell, thereby reducing the modulo interference phenomenon in the low-altitude network and solving the problem of the decline in the user service rate experience caused by the modulo interference phenomenon.

[0118] Figure 3Interaction schematic of the method for reducing co-channel interference in a low-altitude network provided by an embodiment of this application Figure 2 . This embodiment is a specific description of the method for reducing co-channel interference in a low-altitude network based on the Figure 2 embodiment. As shown in Figure 3 , the method includes:

[0119] S201: The airborne terminal obtains the PCI numbers of multiple candidate cells corresponding to the base station.

[0120] Among them, step S201 is similar to step S101 and will not be elaborated here.

[0121] S202: The airborne terminal performs modulo interference operation processing on multiple PCI numbers to obtain the operation result corresponding to each PCI number.

[0122] Among them, the modulo interference operation includes two operations: modulo 4 interference and modulo 30 interference.

[0123] It can be understood that the airborne terminal obtains multiple PCI numbers and performs modulo 4 operation and modulo 30 operation on multiple PCI numbers. For example, for a certain cell with PCI of 110, after performing modulo 4 operation, the calculation result is that the remainder is equal to 2, and after performing modulo 30 operation, the calculation result is that the remainder is equal to 20.

[0124] S203: The airborne terminal determines whether there is a modulo interference phenomenon among the operation results corresponding to multiple PCI numbers.

[0125] It can be understood that the modulo interference phenomenon means that after performing modulo 4 and modulo 30 operations on the PCI numbers of two cells at the same frequency, if the obtained operation results are the same, then these two cells generate corresponding interference. According to the result of the modulo interference operation, compare whether there are two cells with the same remainder among the cells at the same frequency under this base station.

[0126] S204: If there is a modulo interference phenomenon among the operation results corresponding to multiple PCI numbers, the airborne terminal determines the two candidate cells with the modulo interference phenomenon as the first cell and the second cell.

[0127] It can be understood that according to the result of the modulo interference operation, find two cells with the same remainder and determine these two cells as the two candidate cells generating modulo interference. For example, for a certain cell with a frequency of 38960 and a PCI number of 170, after performing modulo 30 operation, the obtained remainder is 10. For another cell with a frequency of 38960 and a PCI number of 70, after performing modulo 30 operation, the obtained remainder is also 10. Therefore, it can be determined that there will be a modulo 30 interference phenomenon between these two cells. Determine the cell with PCI number 170 as the first cell and the cell with PCI number 70 as the second cell.

[0128] S205: The airborne terminal sends RRC connection information to the first cell and the second cell respectively, so that the first cell and the second cell determine the relative distance from the airborne terminal according to the first position information of the airborne terminal carried in the RRC connection information. The RRC connection information includes: a modulo equality field and the first position information of the airborne terminal.

[0129] Among them, step S205 is similar to step S103, and will not be elaborated here.

[0130] S206: The airborne terminal sends a co-channel interference adjustment request to the core network device, where the co-channel interference adjustment request carries an AUV field and the identification information of the first cell and the second cell.

[0131] Among them, step S206 is similar to step S104, and will not be elaborated here.

[0132] S207: Obtain the second position information of the first cell or the second cell, and determine the relative distance between the first cell or the second cell and the airborne terminal according to the first position information and the second position information.

[0133] It can be understood that after the first cell and the second cell obtain the fields of RRC_Conn_Req, Modular equality, and GPS information sent by the airborne terminal, they learn that there is a modulo interference phenomenon in themselves, and thus obtain the coordinate information (X 2 , Y 2 , Z 2 ) of their own positions respectively. Then, they calculate the distance with the first position information (X 1 , Y 1 , Z 1 ) reported by the airborne terminal. The calculation formula is as follows:

[0134]

[0135] According to the above calculation formula, the first cell and the second cell respectively obtain the relative distance between their own positions and the airborne terminal, and then send this relative distance information to the core network device, so that the core network can select the primary serving cell according to the relative distance information.

[0136] S208: The first cell or the second cell sends the relative distance to the core network device, so that the core network device performs co-channel interference adjustment processing on the airborne terminal according to the relative distance.

[0137] Among them, step S208 is similar to step S106, and will not be elaborated here.

[0138] S209: Determine the primary serving cell from the first cell and the second cell according to the relative distance.

[0139] Among them, step S209 is similar to step S107, and will not be elaborated here.

[0140] S210: Adjust the configuration of the primary serving cell.

[0141] Among them, step S210 is similar to step S108, and will not be elaborated here.

[0142] The method for reducing co-channel interference in the low-altitude network provided in this embodiment enables the airborne terminal to determine the first cell and the second cell, send RRC connection information to the first cell and the second cell respectively. The RRC connection information includes: a modulo equality field and the first location information of the airborne terminal, and at the same time send a co-channel interference adjustment request to the core network device. The first cell or the second cell determines the relative distance from the airborne terminal according to the first location information of the airborne terminal. The first cell or the second cell sends the relative distance to the core network device. The core network device determines the primary serving cell and controls the primary serving cell to perform uplift adjustment of the transmission power and judgment of the load situation. This method selects the primary serving cell through the interaction between the airborne terminal, the first cell, the second cell and the core network device, and enables the core network device to adjust the primary serving cell, thereby reducing the modulo interference phenomenon in the low-altitude network and solving the problem of the decline in the user service rate experience caused by the modulo interference phenomenon.

[0143] Figure 4 It is a schematic flowchart of the method for reducing co-channel interference in the low-altitude network provided in the embodiment of the present application. This embodiment is applied to the core network device and is a specific description of the core network device determining the primary serving cell and adjusting it on the basis of Figure 2 the embodiment or Figure 3 the embodiment. As Figure 4 shown, the method includes:

[0144] S301: Obtain the co-channel interference adjustment request sent by the airborne terminal.

[0145] It can be understood that the core network device receives the co-channel interference adjustment request sent by the airborne terminal, judges whether there is an AUV field in the co-channel interference adjustment request. If there is an AUV field, it determines that the service being processed at this time is the unmanned aerial vehicle low-altitude network service, and determines the cell with modulo interference according to the modulo equality field, and obtains the information sent by the cell.

[0146] S302: Obtain the first relative distance sent by the first cell and the second relative distance sent by the second cell.

[0147] It is understandable that the core network device receives the relative distance information sent from the first cell and the second cell, so that subsequent judgments can be made based on the two relative distance information to determine the primary serving cell.

[0148] S303: Determine whether the first relative distance is greater than the second relative distance.

[0149] It is understandable that after the core network device obtains the relative distances between the two cells and the airborne terminal, it compares and judges the two relative distances, and selects the cell with the smaller distance as the primary serving cell.

[0150] S304: If the first relative distance is greater than the second relative distance, determine that the primary serving cell is the second cell.

[0151] S305: If the first relative distance is not greater than the second relative distance, determine that the primary serving cell is the first cell.

[0152] It is understandable that when the core network device processes the co-channel interference phenomenon, the main cell to be adjusted is the cell closer to the airborne terminal. Therefore, the core network device judges the two relative distance information obtained. If the first relative distance is greater than the second relative distance, that is, the distance between the first cell and the airborne terminal is farther, determine that the primary serving cell is the second cell. If the first relative distance is less than the second relative distance, that is, the distance between the first cell and the airborne terminal is closer, determine that the primary serving cell is the first cell.

[0153] S306: Control the primary serving cell to perform an uplift adjustment of the transmission power.

[0154] It is understandable that after determining the primary serving cell, the core network device controls the primary serving cell to increase the transmission power. By controlling the transmission power of the primary serving cell, it increases the signal transmission distance within a certain range, enhances the signal strength, and makes it easier for the base station to receive the signal and cancel the interference.

[0155] S307: Obtain the load condition of the primary serving cell.

[0156] S308: According to the load condition, determine whether the load of the primary serving cell reaches a preset load.

[0157] It is understandable that while the core network device increases the transmission power of the primary serving cell, it obtains the load condition of the primary serving cell and determines whether the load reaches a preset state. The judgment of the load condition is to avoid excessive adjustment of the electronic downtilt angle, thereby maintaining the balance and load balance of the network. For example, the preset load can be 30%, that is, to determine whether the load of the primary serving cell is greater than 30% or less than 30%.

[0158] S309: When the load of the primary serving cell reaches the preset load, no adjustment is made to the electronic downtilt angle of the primary serving cell.

[0159] It can be understood that when the cell load reaches the preset load, if the electronic downtilt angle of the primary serving cell is controlled to be adjusted, it may cause cell overload. Therefore, no adjustment is made to the cell that reaches the preset load.

[0160] S310: When the load of the primary serving cell does not reach the preset load, control the primary serving cell to adjust the electronic downtilt angle.

[0161] Among them, the electronic downtilt angle refers to the angle between the radiation direction of the antenna and the ground. By adjusting it, the shape and size of the area covered by the antenna can be changed.

[0162] It can be understood that the preset load can be 30%. If the load of the primary serving cell does not reach 30%, while raising the transmission power, the electronic downtilt angle of the antenna is adjusted, and the angle of the downtilt angle is adjusted towards the sky direction. By adjusting the electronic downtilt angle, the coverage radius of the primary serving cell is changed. As the downtilt angle increases, the radius of the coverage area shrinks, so as to improve the power of the cell. If the load of the primary serving cell reaches 30%, no adjustment of the electronic downtilt angle is made, and only the transmission power is adjusted upwards.

[0163] The method for reducing co-channel interference in the low-altitude network provided in this embodiment is applied to the core network device. By obtaining the co-channel interference adjustment request sent by the airborne terminal, the first relative distance sent by the first cell and the second relative distance sent by the second cell. The cell with the smaller relative distance is determined as the primary serving cell, and the primary serving cell is controlled to perform an upward adjustment of the transmission power, and it is judged whether the electronic downtilt angle needs to be adjusted according to the load situation. This method adjusts the transmission power and the electronic downtilt angle of the primary serving cell to increase the power of the primary serving cell, thereby reducing the co-channel interference phenomenon in the low-altitude network and solving the problem of the decline in the user service rate experience.

[0164] Figure 5 It is a schematic structural diagram of the device for reducing co-channel interference in the low-altitude network provided in this application, which is applied to the airborne terminal, as Figure 5 shown. The device 400 for reducing co-channel interference in the low-altitude network provided in this application includes:

[0165] An acquisition module 401: used to acquire the PCI numbers of multiple candidate cells corresponding to the base station;

[0166] A determination module 402: used to determine a first cell and a second cell according to the multiple PCI numbers, and the first cell and the second cell are cells with co-channel interference;

[0167] Transmission module 403: It is used to send RRC connection information to the first cell and the second cell respectively, so that the first cell and the second cell determine the relative distance from the airborne terminal according to the first position information of the airborne terminal carried in the RRC connection information. The RRC connection information includes: a modulo equality field and the first position information of the airborne terminal;

[0168] The transmission module 403 is further configured to send a co-channel interference adjustment request to the core network device, where the co-channel interference adjustment request carries an AUV field and the identification information of the first cell and the second cell.

[0169] Optionally, the device further includes: a processing module 404 and a judgment module 405:

[0170] The processing module 404 is configured to perform modulo interference operation processing on multiple PCI numbers to obtain an operation result corresponding to each PCI number;

[0171] The judgment module 405 is configured to judge whether there is a modulo interference phenomenon among the operation results corresponding to multiple PCI numbers;

[0172] The determination module 402 is further configured to, if there is a modulo interference phenomenon among the operation results corresponding to multiple PCI numbers, determine the two candidate cells with the modulo interference phenomenon as the first cell and the second cell.

[0173] Figure 6 This is a schematic structural diagram of a device for reducing co-channel interference in a low-altitude network provided by the present application, which is applied to the first cell or the second cell. As Figure 6 shown, the device 500 for reducing co-channel interference in a low-altitude network provided by the present application includes:

[0174] Acquisition module 501: It is used to acquire the RRC connection information sent by the airborne terminal. The RRC connection information includes: a modulo equality field and the first position information of the airborne terminal. The modulo equality field is used to indicate that there is a modulo interference phenomenon in the first cell or the second cell;

[0175] Determination module 502: It is used to determine the relative distance from the airborne terminal according to the first position information of the airborne terminal;

[0176] Transmission module 503: It is used to send the relative distance to the core network device, so that the core network device performs co-channel interference adjustment processing on the airborne terminal according to the relative distance.

[0177] Optionally, the obtaining module 501 is further configured to obtain second location information of the first cell or the second cell, and determine a relative distance between the first cell or the second cell and the airborne terminal according to the first location information and the second location information.

[0178] Figure 7 FIG. 4 is a schematic structural diagram of a device for reducing co-channel interference in a low-altitude network provided by the present application, which is applied to a core network device, such as Figure 7 As shown, the device 600 for reducing co-channel interference in a low-altitude network provided by the present application includes:

[0179] An obtaining module 601, configured to obtain a co-channel interference adjustment request sent by an airborne terminal, where the co-channel interference adjustment request carries an AUV field and identification information of a first cell and a second cell, and the first cell and the second cell are cells with a modulo interference phenomenon;

[0180] The obtaining module 601 is further configured to obtain a first relative distance sent by the first cell and a second relative distance sent by the second cell;

[0181] A determining module 602, configured to determine a primary serving cell from the first cell and the second cell according to the first relative distance and the second relative distance;

[0182] An adjustment module 603, configured to adjust the configuration of the primary serving cell.

[0183] Optionally, the device further includes: a judging module 604:

[0184] The judging module 604 is configured to judge whether the first relative distance is greater than the second relative distance;

[0185] The determining module 602 is further configured to, if the first relative distance is greater than the second relative distance, determine that the primary serving cell is the second cell;

[0186] The determining module 602 is further configured to, if the first relative distance is not greater than the second relative distance, determine that the primary serving cell is the first cell.

[0187] Optionally, the device further includes: a control module 605:

[0188] The control module 605 is configured to control the primary serving cell to perform a lift adjustment of the transmission power;

[0189] The obtaining module 601 is further configured to obtain the load condition of the primary serving cell, and judge whether the load of the primary serving cell reaches a preset load according to the load condition;

[0190] The control module 605 is further configured to control the main serving cell to adjust the electronic downtilt angle when the load of the main serving cell does not reach the preset load.

[0191] Figure 8 FIG. is a schematic structural diagram of a device for reducing co-channel interference in a low-altitude network provided by the present application. As Figure 8 shown, the present application provides a device for reducing co-channel interference in a low-altitude network. The device 700 for reducing co-channel interference in a low-altitude network includes: a receiver 701, a transmitter 702, a processor 703, and a memory 704.

[0192] The receiver 701 is configured to receive instructions and data;

[0193] The transmitter 702 is configured to send instructions and data;

[0194] The memory 704 is configured to store computer-executable instructions;

[0195] The processor 703 is configured to execute the computer-executable instructions stored in the memory 704 to implement each step performed by the method for reducing co-channel interference in a low-altitude network in the foregoing embodiments. For specific reference, see the relevant descriptions in the foregoing method embodiments for reducing co-channel interference in a low-altitude network.

[0196] Optionally, the foregoing memory 704 may be either independent or integrated with the processor 703.

[0197] When the memory 704 is independently provided, the electronic device further includes a bus for connecting the memory 704 and the processor 703.

[0198] The present application further provides a computer-readable storage medium. Computer-executable instructions are stored in the computer-readable storage medium. When the processor executes the computer-executable instructions, the method for reducing co-channel interference in a low-altitude network performed by the foregoing device for reducing co-channel interference in a low-altitude network is implemented.

[0199] Those of ordinary skill in the art will understand that all or some of the steps in the methods disclosed above, and the functional modules / units in systems and devices, can be implemented as software, firmware, hardware, and appropriate combinations thereof. In the hardware implementation, the division of functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, one physical component can have multiple functions, or one function or step can be executed by several physical components in cooperation. Some or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or can be implemented as hardware, or can be implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that a communication medium typically contains computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0200] After considering the specification and practicing the invention disclosed herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include well-known knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only illustrative, and the true scope and spirit of the present application are pointed out by the following claims.

[0201] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A method for reducing co-channel interference in a low-altitude network, characterized in that, applied to an airborne terminal, the method includes: Obtain the PCI numbers of multiple candidate cells corresponding to the base station; According to the multiple PCI numbers, determine a first cell and a second cell, where the first cell and the second cell are cells with modulo interference; Send RRC connection information to the first cell and the second cell respectively, so that the first cell and the second cell determine the relative distance from the airborne terminal according to the first position information of the airborne terminal carried in the RRC connection information, and the RRC connection information includes: a modulo equality field and the first position information of the airborne terminal; Send a co-channel interference adjustment request to the core network device, where the co-channel interference adjustment request carries an AUV field and the identification information of the first cell and the second cell.

2. The method according to claim 1, characterized in that, The determining the first cell and the second cell according to the multiple PCI numbers includes: Perform modulo interference operation processing on the multiple PCI numbers to obtain the operation result corresponding to each PCI number; Judge whether there is a modulo interference phenomenon in the operation results corresponding to the multiple PCI numbers; If there is a modulo interference phenomenon in the operation results corresponding to the multiple PCI numbers, then determine the two candidate cells with the modulo interference phenomenon as the first cell and the second cell.

3. A method for reducing co-channel interference in a low-altitude network, characterized in that, applied to the first cell or the second cell, the method includes: Obtain the RRC connection information sent by the airborne terminal, and the RRC connection information includes: a modulo equality field and the first position information of the airborne terminal, and the modulo equality field is used to indicate that there is a modulo interference phenomenon in the first cell or the second cell; Determine the relative distance from the airborne terminal according to the first position information of the airborne terminal; Send the relative distance to the core network device, so that the core network device performs co-channel interference adjustment processing on the airborne terminal according to the relative distance.

4. The method according to claim 3, characterized in that, The determining the relative distance from the airborne terminal according to the first position information of the airborne terminal includes: Obtain the second position information of the first cell or the second cell, and determine the relative distance between the first cell or the second cell and the airborne terminal according to the first position information and the second position information.

5. A method for reducing co-channel interference in a low-altitude network, characterized in that, applied to the core network device, the method includes: Obtain the co-channel interference adjustment request sent by the airborne terminal, where the co-channel interference adjustment request carries an AUV field and the identification information of the first cell and the second cell, and the first cell and the second cell are cells with a modulo interference phenomenon; Obtain the first relative distance sent by the first cell and the second relative distance sent by the second cell; Determine the primary serving cell from the first cell and the second cell according to the first relative distance and the second relative distance. Adjust the configuration of the primary serving cell.

6. The method according to claim 5, wherein, the determining the primary serving cell from the first cell and the second cell according to the first relative distance and the second relative distance includes: judging whether the first relative distance is greater than the second relative distance; if the first relative distance is greater than the second relative distance, determining the primary serving cell as the second cell; if the first relative distance is not greater than the second relative distance, determining the primary serving cell as the first cell.

7. The method according to claim 5, wherein, the adjusting the configuration of the primary serving cell includes: controlling the primary serving cell to perform an uplift adjustment of the transmission power; acquiring the load condition of the primary serving cell, and judging whether the load of the primary serving cell reaches a preset load according to the load condition; when the load of the primary serving cell does not reach the preset load, controlling the primary serving cell to adjust the electronic downtilt angle.

8. An apparatus for reducing co-channel interference in a low-altitude network, wherein, applied to an airborne terminal, the apparatus includes: an acquisition module: configured to acquire the PCI numbers of a plurality of candidate cells corresponding to a base station; a determination module: configured to determine a first cell and a second cell according to the plurality of PCI numbers, where the first cell and the second cell are cells with modulo interference; a sending module: configured to send RRC connection information to the first cell and the second cell respectively, so that the first cell and the second cell determine the relative distance from the airborne terminal according to the first position information of the airborne terminal carried in the RRC connection information, and the RRC connection information includes: a modulo equality field and the first position information of the airborne terminal; the sending module is further configured to send a co-channel interference adjustment request to a core network device, where the co-channel interference adjustment request carries an AUV field and the identification information of the first cell and the second cell.

9. An apparatus for reducing co-channel interference in a low-altitude network, wherein, applied to the first cell or the second cell, the apparatus includes: an acquisition module: configured to acquire the RRC connection information sent by the airborne terminal, where the RRC connection information includes: a modulo equality field and the first position information of the airborne terminal, and the modulo equality field is used to indicate that the first cell or the second cell has a modulo interference phenomenon; a determination module: configured to determine the relative distance from the airborne terminal according to the first position information of the airborne terminal; a sending module: configured to send the relative distance to the core network device, so that the core network device performs co-channel interference adjustment processing on the airborne terminal according to the relative distance.

10. An apparatus for reducing co-channel interference in a low-altitude network, wherein, applied to a core network device, the apparatus includes: An acquisition module, configured to acquire a co-channel interference adjustment request sent by an airborne terminal, where the co-channel interference adjustment request carries an AUV field and identification information of a first cell and a second cell, and the first cell and the second cell are cells with modulo interference phenomena; The acquisition module is further configured to acquire a first relative distance sent by the first cell and a second relative distance sent by the second cell; A determination module, configured to determine a primary serving cell from the first cell and the second cell according to the first relative distance and the second relative distance; An adjustment module, configured to adjust the configuration of the primary serving cell.

11. An apparatus for reducing co-channel interference in a low-altitude network, characterized in that, it includes: a memory; a processor; wherein, the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement a method for reducing co-channel interference in a low-altitude network according to any one of claims 1-2, 3-4, or 5-7.

12. A computer-readable storage medium, characterized in that, the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement a method for reducing co-channel interference in a low-altitude network according to any one of claims 1-2, 3-4, or 5-7.

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