Interference avoidance method and device, electronic equipment, readable storage medium and program product

Abstract

The invention relates to an interference avoidance method and device, electronic equipment, a readable storage medium and a program product. The method comprises the following steps: receiving base station interference information from a base station; the base station interference information comprises the interference signal strength of the base station to the interfered satellite; superposing the interference signal intensities of all the base stations which generate interference on the disturbed satellite to obtain the total interference intensity of the disturbed satellite; and determining an interference avoidance strategy for the disturbed satellite according to the total interference intensity. The interference suppression effect of the base station on the interference signal of the satellite can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to an interference avoidance method, apparatus, electronic device, readable storage medium, and program product. Background Technology

[0002] With the rapid development of the low-altitude economy, millimeter-wave base stations are considering using flexible beamforming antennas to provide communication services to airborne users. However, considering that mobile communication operators' millimeter-wave systems and satellite systems coexist on the same frequency, the upward tilt of the electronic beam from millimeter-wave base stations serving low-altitude users may cause harmful interference to satellite receivers operating on the same frequency. Therefore, interference avoidance measures are necessary. However, current interference avoidance technologies have relatively poor interference suppression effects. Summary of the Invention

[0003] Therefore, it is necessary to provide an interference avoidance method, apparatus, electronic device, readable storage medium, and program product that can improve the interference suppression effect in response to the above-mentioned technical problems.

[0004] Firstly, this application provides an interference avoidance method applied to the core network, the method comprising:

[0005] Receive base station interference information from the base station; the base station interference information includes the strength of the interference signal from the base station to the disturbed satellite;

[0006] The total interference intensity of the affected satellite is obtained by superimposing the interference signal strengths of all base stations that interfere with the affected satellite.

[0007] Determine the interference avoidance strategy for the affected satellite based on the total interference intensity.

[0008] In one embodiment, the base station interference information further includes the direction of interference from the base station to the disturbed satellite; the method further includes:

[0009] Based on the strength and direction of the interference signal, the number of base stations transmitting signals into the air within the line of sight of the interfered satellite and the beam pattern of the satellite are counted and determined to generate an interference base station pool; the interference base station pool includes all base stations that interfere with the interfered satellite.

[0010] In one embodiment, an interference avoidance strategy for the affected satellite is determined based on the total interference intensity, including:

[0011] Based on the severity of the total interference intensity exceeding the threshold corresponding to the satellite protection requirements, determine whether to implement interference avoidance strategies for base stations in the interference base station pool; interference avoidance strategies include adjusting the base station's air-to-ground transmission power and / or beam direction.

[0012] In one embodiment, based on the severity of the total interference intensity exceeding the threshold corresponding to the satellite protection requirements, it is determined whether to implement an interference avoidance strategy for base stations within the interference base station pool, including:

[0013] Obtain the difference between the total interference intensity and the threshold;

[0014] If the difference is less than the first preset value, the interference avoidance strategy will not be implemented for the base stations in the interference base station pool.

[0015] When the difference is greater than or equal to the second preset value, the air-to-ground transmission power of the base stations in the interference base station pool is reduced, and the beam pointing towards the satellite is disabled.

[0016] If the difference is less than the second preset value, the beams of base stations in the interference base station pool pointing towards the satellite are disabled; wherein the second preset value is greater than the first preset value.

[0017] Secondly, this application also provides an interference avoidance method applied to a base station, the method comprising:

[0018] The system sends base station interference information to the core network. The base station interference information includes the interference signal strength of the base station to the disturbed satellite. The base station interference information is used to instruct the core network to superimpose the interference signal strength of all base stations that interfere with the disturbed satellite to obtain the total interference strength of the disturbed satellite. The system then determines the interference avoidance strategy for the disturbed satellite based on the total interference strength.

[0019] In one embodiment, the base station interference information further includes the direction of interference from the base station to the disturbed satellite; the method further includes:

[0020] If the base station has an air service target, then an air beam scan will be performed;

[0021] When a satellite air-to-ground signal is received, the relevant information of the disturbed satellite is determined based on the preset high-orbit geostationary satellite information.

[0022] Based on the relevant information of the disturbed satellite, the strength and direction of the interference signal are obtained.

[0023] In one embodiment, the interference signal strength and interference direction are obtained based on relevant information of the disturbed satellite, including:

[0024] Based on the relevant information of the disturbed satellite, the spatial distance between the base station and the disturbed satellite is obtained, and the base station beam direction and total radiation power towards the disturbed satellite are determined.

[0025] The direction of the base station beam is determined as the direction of interference, and the strength of the interference signal is obtained based on the spatial spacing distance and the total radiated power.

[0026] In one embodiment, the relevant information of the disturbed satellite includes one or more of the following: nadir latitude and longitude, altitude, frequency band, satellite coverage radius, and satellite protection requirements.

[0027] Thirdly, this application also provides an interference avoidance device for use in a core network, the device comprising:

[0028] The receiving module is used to receive base station interference information from the base station; the base station interference information includes the strength of the interference signal from the base station to the disturbed satellite;

[0029] The superposition module is used to superimpose the interference signal strengths of all base stations that interfere with the disturbed satellite to obtain the total interference strength of the disturbed satellite.

[0030] The avoidance module is used to determine the interference avoidance strategy for the disturbed satellite based on the total interference intensity.

[0031] Fourthly, this application also provides an interference avoidance device applied to a base station, the device comprising:

[0032] The transmitting module is used to send base station interference information to the core network. The base station interference information includes the interference signal strength of the base station to the disturbed satellite. The base station interference information is used to instruct the core network to superimpose the interference signal strength of all base stations that interfere with the disturbed satellite to obtain the total interference strength of the disturbed satellite. The interference avoidance strategy for the disturbed satellite is determined based on the total interference strength.

[0033] Fifthly, this application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the methods described in the first and second aspects.

[0034] Sixthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the methods described in the first and second aspects.

[0035] In a seventh aspect, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the methods described in the first and second aspects.

[0036] The aforementioned interference avoidance methods, devices, electronic equipment, readable storage media, and program products receive base station interference information from base stations through the core network. The base station interference information includes the interference signal strength of the base station to the disturbed satellite. The interference signal strengths of all base stations that interfere with the disturbed satellite are superimposed to obtain the total interference strength. An interference avoidance strategy is determined based on the total interference strength, thereby enabling dynamic adjustment of the interference avoidance strategy according to the real-time interference scenario, effectively improving the interference suppression effect, and minimizing the risk of base station interference to the satellite. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a flowchart illustrating an interference avoidance method in one embodiment;

[0039] Figure 2 This is a flowchart illustrating the interference avoidance method in another embodiment;

[0040] Figure 3 This is a flowchart illustrating the steps of an interference avoidance method applied to a base station in one embodiment;

[0041] Figure 4 This is a structural block diagram of an interference avoidance device in one embodiment;

[0042] Figure 5 This is a diagram of the internal structure of an electronic device in one embodiment. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0044] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the schemes, or any combination of multiple schemes. With the rapid development of the low-altitude economy, millimeter-wave base stations are considering using flexible beamforming antennas to provide communication services to airborne users. Considering that mobile communication operators' millimeter-wave systems and satellite systems coexist on the same frequency, when millimeter-wave base stations provide airborne services to low-altitude users, their electronic beam tilt may cause harmful interference to satellite receivers on the same frequency. Currently, the mainstream interference avoidance technology reduces interference intensity by simply limiting the upper hemisphere radiated power of the base station, but traditional solutions have significant limitations. First, this static power control strategy lacks flexibility and cannot be dynamically adjusted according to real-time interference scenarios, resulting in poor interference suppression effects. Secondly, strict power limitations significantly weaken the uplink coverage capability of millimeter-wave base stations, especially in low-altitude network scenarios, which can drastically reduce user access probability and throughput performance, severely impacting network service quality. Furthermore, traditional solutions fail to fully consider the spatial distribution characteristics and service requirements of different satellite systems, resulting in inefficient resource utilization.

[0045] In scenarios where millimeter-wave systems coexist with co-frequency satellite systems, millimeter-wave base stations covering low-altitude users may cause harmful interference to satellite system reception. Current interference avoidance techniques rely solely on controlling the upper hemisphere radiated power of the base station. This traditional approach is not only inflexible in interference control but also significantly reduces the coverage and service performance of millimeter-wave low-altitude networks.

[0046] For interference avoidance between different systems, especially satellite systems, current interference avoidance strategies involve too many modifications to terrestrial networks, potentially rendering them unusable. Because some high-orbit satellite services operate around millimeter-wave public network frequencies, the current restriction on millimeter-wave base stations is a maximum of 25dBm / 200MHz for the upper hemisphere's Total Radiated Power (TRP). However, in practical applications, this limit is too strict; if strictly adhered to, millimeter-wave networks cannot serve the low-altitude economy. For operators, to better serve the low-altitude economy, a flexible airborne beam management solution for millimeter-wave base stations is needed to mitigate the interference risks from terrestrial base stations to high-orbit satellite services and to overcome the current hard limits on airborne radiation from millimeter-wave base stations.

[0047] Based on the aforementioned traditional technologies, embodiments of this application provide an interference avoidance method, apparatus, electronic device, readable storage medium, and program product. The method receives base station interference information from a base station via a core network. This base station interference information includes the interference signal strength of the base station on the affected satellite. The interference signal strengths of all base stations interfering with the affected satellite are superimposed to obtain the total interference strength. An interference avoidance strategy is determined based on this total interference strength. This allows for dynamic adjustment of the interference avoidance strategy according to the real-time interference scenario, effectively improving interference suppression and minimizing the risk of base station interference to the satellite.

[0048] For example, a millimeter-wave base station is designed to scan and detect air-to-ground interference in real time to monitor satellite air-to-ground signals. Based on the direction of the detected interference signal, the base station queries the satellite information preset in the base station, records the direction and intensity of interference to the satellite, and reports it to the core network. The core network then calculates the visible range of the interference to the satellite and coordinates all base stations to implement air-to-ground interference avoidance measures such as adjusting beamforming direction and controlling power, so as to minimize the risk of interference to the satellite by the millimeter-wave base station.

[0049] This application proposes a more intelligent multi-station collaborative dynamic interference avoidance mechanism to ensure that satellite systems are protected from harmful interference while maximizing the coverage performance and service quality of millimeter-wave low-altitude networks. Optionally, this application is suitable for applications where operators' millimeter-wave mobile communication networks serve low-altitude users, and air-to-ground beams can cause harmful interference to other satellite services on the same frequency. By implementing multi-station collaborative air-to-ground interference control, interference risks can be avoided and order in the airwaves can be maintained.

[0050] It should be noted that the beneficial effects or technical problems solved by the embodiments of this application are not limited to this one, but may also be other implicit or related problems. For details, please refer to the description of the embodiments below.

[0051] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0052] In one exemplary embodiment, such as Figure 1 As shown, an interference avoidance method is provided. Taking the application of this method to the core network as an example, it can be understood that this method can be applied not only to the core network but also to other network devices. The method may include the following steps:

[0053] Step 202: Receive base station interference information from the base station; the base station interference information includes the strength of the interference signal from the base station to the disturbed satellite.

[0054] The base station interference information includes the interference signal strength of the current air-to-ground base station for all affected satellites. The interference signal strength refers to the interference intensity that the current air-to-ground base station can cause to a potential affected satellite.

[0055] Specifically, the core network simultaneously receives base station interference information from several air-to-ground base stations. This interference information includes the interference signal strength of the current base station on all satellites affected by the current base station. By statistically analyzing the interference signal strength of all base stations interfering with the affected satellites at the core network level, the core network can coordinate the base station interference information of each base station. This provides a foundation for the subsequent superposition of interference signal strengths and the overall determination of interference avoidance strategies for all base stations.

[0056] For example, a base station can refer to a millimeter-wave band air-to-ground base station, and a disturbed satellite can refer to a disturbed high-orbit satellite.

[0057] Step 204: Superimpose the interference signal strengths of all base stations that interfere with the disturbed satellite to obtain the total interference strength of the disturbed satellite.

[0058] Specifically, the core network superimposes the interference signal strengths received from all ground-based base stations to obtain the total interference strength of the corresponding base station to the affected satellite. By superimposing the interference signal strengths of all base stations causing interference to the affected satellite, the core network can accurately obtain the actual interference strength of all affected satellites, i.e., the total interference strength, when the interference to the satellite is caused by the superposition of interference from a large number of ground-based base stations. This provides a more accurate basis for determining subsequent interference avoidance strategies.

[0059] Step 206: Determine the interference avoidance strategy for the affected satellite based on the total interference intensity. Specifically, the core network further determines the interference avoidance strategy for the affected satellite based on the obtained total interference intensity, and coordinates the corresponding base stations to implement the interference avoidance strategy at the core network level. By coordinating the implementation of different levels of air-to-ground interference avoidance strategies by the core network, a dynamic balance between the coverage performance and interference risk of the low-altitude network is ensured. Optionally, the total interference intensity can refer to lumped interference.

[0060] For example, based on the interference avoidance strategy, multi-station joint adjustments are performed until the total interference is lower than the satellite protection requirements. Real-time air beam scanning and interference intensity monitoring are also conducted to ensure that the interference to the satellite from the millimeter-wave base station is controllable under normal operating conditions. This step can be used as an evaluation method for calculating air interference from a single ground base station and / or multiple ground base stations.

[0061] In the aforementioned interference avoidance method, the core network coordinates interfering base stations, superimposes the total interference intensity of ground base stations on the satellite, and adjusts the interference avoidance strategy based on this total interference intensity. This dynamically ensures a balance between the coverage performance and interference risk of the low-altitude network, minimizing the interference risk of base stations on the satellite and significantly improving the interference suppression effect. This method of determining the interference avoidance strategy based on the total interference intensity of the disturbed satellite can ensure that the satellite is protected from harmful interference while maximizing the coverage performance and service quality of the low-altitude network. It effectively prevents the impact on network service quality caused by implementing the interference avoidance strategy. In an exemplary embodiment, the base station interference information also includes the direction of interference from the base station to the disturbed satellite; the method further includes:

[0062] Based on the strength and direction of the interference signal, the number of base stations transmitting signals into the air within the line of sight of the interfered satellite and the beam pattern of the satellite are counted and determined to generate an interference base station pool; the interference base station pool includes all base stations that interfere with the interfered satellite.

[0063] Optionally, the interference direction can refer to the base station beam angle where the disturbed satellite is located, or it can refer to the air beam pointing information, or it can refer to the base station beam direction; for example, the interference visibility range can refer to the satellite coverage radius, or it can refer to the satellite interference range, or it can refer to the high-orbit satellite beam visibility range.

[0064] Specifically, at the core network level, the number of base stations transmitting signals into the air within the visible range of the satellite interference, along with their beam patterns, are statistically determined and placed into an interference base station pool (or simply a base station pool). The beam pattern information includes the interference signal strength and direction. By obtaining the interference direction of the base stations on the affected satellite, the beam direction causing interference from the base station can be accurately determined, providing a basis for subsequent interference avoidance strategies, such as avoiding transmission directions in that beam direction. By generating an interference base station pool at the core network level, the core network's overall coordination capability over interference base stations is improved.

[0065] For example, since there are large areas of ground base stations within the line of sight of high-orbit satellites, the interference to the satellite may be caused by the superposition of interference from a large number of ground base stations. Therefore, the core network layer needs to statistically determine the number of base stations transmitting signals to the air within the interference range of the satellite, the satellite beam configuration, and add them to the interfering base station pool. Optionally, the satellite beam configuration may include air beam pointing information. The interference line of sight can be selected as a circular area with a radius of 30 km centered on the nadir point of the disturbed satellite; the satellite beam configuration includes the base station beam direction and the total radiated power in that beam direction.

[0066] In one exemplary embodiment, determining an interference avoidance strategy for the affected satellite based on the total interference intensity includes:

[0067] Based on the severity of the total interference intensity exceeding the threshold corresponding to the satellite protection requirements, determine whether to implement interference avoidance strategies for base stations in the interference base station pool; interference avoidance strategies include adjusting the base station's air-to-ground transmission power and / or beam direction.

[0068] Specifically, satellite protection requirements can refer to interference protection requirements. In this embodiment, the core network determines whether to implement and what interference avoidance strategy to implement for all base stations in the interference base station pool that are interfering with the affected satellite, based on the severity of the total interference intensity exceeding the threshold corresponding to the satellite protection requirement of the affected satellite. This ensures that the total interference intensity does not exceed the satellite protection requirement of the affected satellite. The interference avoidance strategy includes adjusting the base station's air-to-ground transmission power and / or beam direction.

[0069] It can be understood that the severity of the total interference intensity of the disturbed satellite exceeding the threshold corresponding to the satellite protection requirements of the disturbed satellite can be used to indicate the severity of the total interference intensity of the disturbed satellite exceeding the satellite protection requirements. For example, the total base station interference intensity seriously exceeds the satellite protection requirements, the total base station interference slightly exceeds the satellite protection requirements, or the total base station interference is lower than the satellite protection requirements.

[0070] For example, if the total base station interference intensity is determined to be significantly higher than the satellite protection requirements, the core network will coordinate all base stations in the pool to reduce their air-to-ground transmission power and disable beam directions toward high-orbit satellites according to the service requirements; if the total base station interference slightly exceeds the satellite protection requirements, the core network will coordinate all base stations in the pool to adjust their beam directions to avoid satellite directions according to the service requirements; if the total base station interference is lower than the satellite protection requirements, all base stations in the interfering base station pool do not need to implement air-to-ground interference avoidance strategies.

[0071] In an exemplary embodiment, based on the severity of the total interference intensity exceeding the threshold corresponding to the satellite protection requirements, it is determined whether to implement an interference avoidance strategy for base stations within the interference base station pool, including:

[0072] Obtain the difference between the total interference intensity and the threshold;

[0073] If the difference is less than the first preset value, the interference avoidance strategy will not be implemented for the base stations in the interference base station pool.

[0074] When the difference is greater than or equal to the second preset value, the air-to-ground transmission power of the base stations in the interference base station pool is reduced, and the beam pointing towards the satellite is disabled.

[0075] If the difference is less than the second preset value, the beams of base stations in the interference base station pool pointing towards the satellite are disabled; wherein the second preset value is greater than the first preset value.

[0076] Specifically, the total interference intensity obtained by superposition is subtracted from the threshold corresponding to the satellite protection requirements of the affected satellite to obtain the difference value. The difference value is compared with a first preset value and a second preset value. When the difference value is less than the first preset value, the interference avoidance strategy is not implemented for all base stations in the interference base station pool that cause interference to the affected satellite. When the difference value is greater than or equal to the second preset value, the air-to-ground transmission power of the base stations in the interference base station pool is reduced and the beam pointing towards the satellite is disabled. When the difference value is less than the second preset value, the beam pointing towards the satellite of the base stations in the interference base station pool is disabled. The second preset value is greater than the first preset value.

[0077] For example, taking the disturbed satellite as Sat1, the total interference intensity as Imax, the threshold corresponding to the satellite protection requirement as I1, and the interference signal intensity as I_BS, each base station in the interference base station pool BS1…BSn calculates the interference signal intensity I_BS1, I_BS2,… I_BSn for the disturbed satellite Sa1. The interference intensities of all base stations in the base station pool are then superimposed to obtain the total interference intensity Imax of all base stations in the base station pool for the disturbed satellite Sat1.

[0078] For example, let the total interference intensity Imax be subtracted from the threshold I1 to obtain the difference Imax - I1. For instance, if Imax - I1 >= 7dB, where 7dB is a second preset value, then it is determined that the total interference intensity Imax significantly exceeds the satellite protection requirements. The core network will coordinate all base stations serving low-altitude users to implement a strict air-to-air interference avoidance strategy, reducing the air-to-air transmission power of base stations in the pool while ensuring low-altitude service requirements, and simultaneously disabling the beams of all base stations pointing towards the satellite. If the total interference intensity Imax slightly exceeds the threshold I1 corresponding to the satellite protection requirements, that is, let the total interference intensity Imax be subtracted from the threshold I1 to obtain the difference Imax - I1. For instance, if Imax - If I1 < 7dB, where 7dB is the second preset value, and a general air-to-ground interference avoidance strategy is applied to all base stations in the base station pool, then the core network will coordinate all base stations serving low-altitude users to adjust their beam direction according to the service and disable the beam pointing towards the satellite. If the total base station interference Imax is lower than the threshold I1 corresponding to the satellite protection requirement, i.e., the difference Imax - I1 < 0, where 0 is the first preset value, then all base stations in the base station pool do not need to implement an air-to-ground interference avoidance strategy.

[0079] The aforementioned multi-base station joint adjustments were performed until the aggregate interference of all base stations in the base station pool was lower than the satellite protection requirements of the disturbed satellite. Real-time aerial beam scanning and interference intensity monitoring were also conducted to ensure that interference to the satellite from the millimeter-wave base station was controllable while it was operating normally.

[0080] In one exemplary embodiment, such as Figure 2 As shown, an interference avoidance method is provided. Taking the application of this method to a base station as an example, it can be understood that this method can be applied not only to base station equipment, but also to other network equipment. The method includes the following steps.

[0081] Step 302: Send base station interference information to the core network; the base station interference information includes the interference signal strength of the base station to the disturbed satellite; wherein, the base station interference information is used to instruct the core network to superimpose the interference signal strength of all base stations that interfere with the disturbed satellite to obtain the total interference strength of the disturbed satellite; and determine the interference avoidance strategy for the disturbed satellite based on the total interference strength.

[0082] Specifically, each base station sends base station interference information to the core network. This interference information includes at least the interference signal strength of the current base station on all affected satellites. This information instructs the core network to perform the step of superimposing the interference signal strengths of all base stations interfering with the affected satellites to obtain the total interference strength. Based on the total interference strength, an interference avoidance strategy for the affected satellites is determined. By having each base station send its current interference signal strength to the core network, the core network can better coordinate the interference situation of each base station on the affected satellites.

[0083] It should be noted that the specific implementation of the interference avoidance method from the perspective of the base station in this application embodiment can be found in the description of the interference avoidance method from the perspective of the core network above, and will not be repeated here.

[0084] like Figure 3 As shown, in one embodiment, the base station interference information further includes the direction of interference from the base station to the disturbed satellite; the method further includes:

[0085] Step 402: If the base station has an air service target, then perform an air beam scan.

[0086] Specifically, when a base station has an air-to-ground service target, it performs an air-to-ground beam scan to scan for satellite air-to-ground signals in each beam direction.

[0087] Step 404: When a satellite air-to-ground signal is received, the relevant information of the disturbed satellite is determined based on the preset high-orbit geostationary satellite information.

[0088] Specifically, when a base station receives a satellite air-to-ground signal, it indicates that the base station is being disturbed by a satellite. The base station then determines the relevant information of the disturbed satellite based on the geostationary satellite information pre-set in the base station.

[0089] Step 406: Based on the relevant information of the disturbed satellite, the strength and direction of the interference signal are obtained. Specifically, by only performing air-to-air beam scanning when the base station has an air-to-ground service target, and by determining the relevant information of the disturbed satellite based on preset high-orbit geostationary satellite information when a satellite air-to-ground signal is received, the base station can realize the function of real-time monitoring and analysis of interfering satellite information, fully realize interference detection, and dynamically reduce the risk of base station interference to satellites.

[0090] It should be noted that if the base station does not have an air service target, it means that it will not transmit service beams into the air, and therefore will not interfere with satellites in the air.

[0091] Furthermore, the system uses pre-set geostationary satellite information in high orbit only when receiving satellite air-to-ground signals, thereby improving resource utilization efficiency and further enhancing the coverage performance and service quality of millimeter-wave low-altitude networks while ensuring that the satellite system is protected from harmful interference.

[0092] For example, each sector of the millimeter-wave band air-to-ground base station uses a flexible beamforming antenna. If the base station has an air-to-ground service target, it activates a certain range of antennas on the top of the antenna panel for air-to-ground beam scanning and monitors whether satellite air-to-ground signals can be received in each beam direction. At the same time, it estimates and records the total radiated power in each beam scanning direction. If the base station detects satellite interference signals of a certain frequency band in a certain direction, it uses the angle of the base station beam and the pre-set high-orbit geostationary satellite information within the base station to find and determine the relevant information of the potentially interfered satellite.

[0093] In an exemplary embodiment, the interference signal strength and interference direction are obtained based on relevant information of the disturbed satellite, including:

[0094] Based on the relevant information of the disturbed satellite, the spatial distance between the base station and the disturbed satellite is obtained, and the base station beam direction and total radiation power towards the disturbed satellite are determined.

[0095] The direction of the base station beam is determined as the direction of interference, and the strength of the interference signal is obtained based on the spatial spacing distance and the total radiated power.

[0096] Specifically, based on the relevant information of the disturbed satellite determined from the geostationary satellite information pre-set in the base station, the spatial distance between the current base station and the disturbed satellite is obtained, and the base station beam direction and total radiated power toward the disturbed satellite are determined according to the current state of the base station; the base station beam direction is determined as the interference direction, and the interference signal strength of the current base station toward the disturbed satellite is obtained according to the spatial distance between the base station and the disturbed satellite and the total radiated power of the base station toward the interference direction.

[0097] For example, based on the base station's positioning coordinates and the latitude, longitude, altitude, and orbital position of the potentially disturbed satellite, the spatial distance between the base station and the satellite is determined, and the direction of the base station beam toward a certain satellite and the total radiated power of that beam are determined and recorded. Based on the interference direction, distance, and interference signal strength of the base station toward a potentially disturbed satellite, the interference signal strength of the base station to the satellite is assessed through link budget according to the relevant propagation model recommendations of the International Telecommunication Union.

[0098] In one exemplary embodiment, the relevant information of the disturbed satellite includes one or more of the following: nadir latitude and longitude, altitude, frequency band, satellite coverage radius, and satellite protection requirements.

[0099] Specifically, the geostationary satellite information pre-configured in the base station includes at least one or more of the following: nadir latitude and longitude, altitude, frequency band, satellite coverage radius, and satellite protection requirements. This allows the base station to obtain this information when acquiring relevant information about the disturbed satellite. By pre-configuring geostationary satellite information in the base station, including one or more of these parameters, the satellite information acquisition path can be shortened, enabling real-time access to satellite information and improving the efficiency of implementing interference avoidance methods.

[0100] To further illustrate the solution of this application, a specific example is provided below. Using BS1 as the base station, beam as beam, scanning direction as theta, base station beam angle (i.e., the direction of interference from the base station to the satellite) as theta_2, the altitude of the disturbed satellite as h1, frequency band as f1, satellite coverage radius as r, the threshold corresponding to interference protection requirements (i.e., satellite protection requirements) as I1, spatial spacing distance as d, interference signal strength as I_BS1, and total interference strength as Imax, the interference avoidance method of this application embodiment may include the following steps:

[0101] Each sector of the millimeter-wave band air-to-ground base station employs a flexible beamforming antenna. If base station BS1 has an air-to-ground service target, the antennas within a certain range at the top of the antenna panel are activated for air-to-ground beam scanning. The system monitors whether satellite air-to-ground signals (i.e., satellite interference signals) can be received in each beam scanning direction. Simultaneously, it estimates and records each beam, scanning direction, and total radiated power, recorded as [BS1 beam1 theta1 EIRP1] [BS1 beam_2 theta_2 EIRP_2][BS1 beam3 theta3 EIRP3]... For example, the antennas within a certain range at the top of the antenna panel can refer to the top 1 / 5 of the antenna panel.

[0102] When a base station detects satellite interference signals in a certain direction and frequency band, such as [BS1 beam_2theta_2 EIRP_2], it uses the base station beam angle theta_2 and pre-set geostationary satellite information within the base station to locate and determine the relevant information of the potentially interfered geostationary satellite Sat1, including its nadir latitude and longitude, altitude h1, frequency band f1, satellite coverage radius r, and interference protection requirements. Specifically, because satellite frequencies and operator frequencies are distinct, when a base station detects satellite interference signals, it can determine whether the received signal frequency band belongs to satellite interference signals by checking the received signal frequency band.

[0103] Based on the positioning coordinates of base station BS1 and the latitude, longitude, altitude, and orbital position of the potentially disturbed satellite Sat1, the spatial distance d between base station BS1 and satellite Sat1 is determined, and the direction of the base station beam toward satellite Sat1 and the total radiated power [BS1 beam_2 theta_2 EIRP_2] in that direction are determined and recorded.

[0104] Based on the spacing distance d between base station BS1 and the potentially interfered satellite Sat1, and the interference signal strength EIRP_2 of the base station, the path loss PL_BS1 is calculated according to the ITU-recommended ground-to-air propagation model recommendation such as ITU-R P.619. The interference signal strength I_BS1 of the base station to the satellite is evaluated through link budget, which is I_BS1 = EIRP_2 - PL_BS1. The interference direction theta_2 and the interference signal strength I_BS1 of the base station BS1 to the aforementioned satellite Sat1 are recorded and reported to the core network as [BS1 beam_2 theta_2 EIRP_2 I_BS1].

[0105] Because there are a large area of ​​ground base stations within the visible range of the satellite Sa1 beam (a circular area with a radius of 30km centered on the satellite's nadir), the interference that may be caused by the superposition of interference from a large number of ground base stations. Therefore, it is necessary to statistically determine, at the core network level, the base stations transmitting signals to the air within the satellite's interference range and their beam information to the satellite, and place them into an interference base station pool (e.g., [BS1 beam_2 theta_2 EIRP_2], [BS2 beam_a theta_a EIRP_a], [BS3 beam_b theta_b EIRP_b], ..., [BSn beam_x theta_x EIRP_x]).

[0106] Each base station in the interference base station pool BS1…BSn calculates the interference signal strength I_BS1, I_BS2, … I_BSn for the potentially disturbed satellite Sa1 according to the steps described above. The interference strengths of all base stations in the pool are then superimposed to obtain the total interference strength Imax of all base stations in the ground base station pool for the potentially disturbed high-orbit satellite Sa1.

[0107] If it is determined that the total base station interference Imax seriously exceeds the above satellite protection requirements (e.g., Imax - I1 >= 7dB), then the core network will coordinate all base stations BS1, BS2, BS3...BSn serving low-altitude users to implement a strict air-to-air interference avoidance strategy. Under the premise of ensuring low-altitude service requirements, the air-to-air transmission power of the base stations in the pool will be reduced, and the beams of all base stations pointing towards the satellite will be disabled.

[0108] If the total base station interference Imax slightly exceeds the satellite protection requirements (e.g., Imax-I1<7dB), a general air interference avoidance strategy will be implemented for all base stations in the base station pool. In this case, the core network will coordinate all base stations serving low-altitude users to adjust their beam direction according to the service and disable the beam pointing towards the satellite.

[0109] If the total base station interference Imax is lower than the satellite protection requirement (e.g., Imax-I1<0), then all base stations in the interference base station pool do not need to implement air interference avoidance strategies.

[0110] The aforementioned multi-station joint adjustments were performed until the total interference was below the satellite protection requirements. Real-time aerial beam scanning and interference intensity monitoring were also conducted to ensure that interference to the satellite from the millimeter-wave base station was controllable while it was operating normally.

[0111] By setting up an interference scanning beam on the air-to-ground radiation panel of a millimeter-wave base station to scan for satellite signals in the air, and determining the relative position of the satellite by the beam direction of the scanned signal, and obtaining the corresponding satellite information by looking up the table in the base station's preset information, the interference direction and intensity of the base station to the satellite are recorded and reported to the core network. The core network uniformly identifies a pool of air-to-ground base stations that may interfere with the satellite, and statistically analyzes the interference beam information and interference signal intensity of the base stations in the pool. By superimposing the total air-to-ground radiation energy of the base stations in the pool, the interference risk of all base stations in the pool to high-orbit satellites is determined. The core network then coordinates the implementation of air-to-ground interference avoidance strategies of different degrees for the base station pool, including adjusting the beam direction and reducing the air-to-ground radiation power, to minimize the interference risk of millimeter-wave base stations to satellites and dynamically ensure a balance between the coverage performance and interference risk of the millimeter-wave low-altitude network.

[0112] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0113] Based on the same inventive concept, this application also provides an interference avoidance device for implementing the interference avoidance method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more interference avoidance device embodiments provided below can be found in the limitations of the interference avoidance method described above, and will not be repeated here.

[0114] In one exemplary embodiment, refer to Figure 4 An interference avoidance device 900 is provided for use in a core network, comprising: a receiving module 901, an overlay module 902, and an avoidance module 903, wherein:

[0115] The receiving module 901 is used to receive base station interference information from the base station; the base station interference information includes the strength of the interference signal from the base station to the disturbed satellite;

[0116] The superposition module 902 is used to superimpose the interference signal strengths of all base stations that interfere with the disturbed satellite to obtain the total interference strength of the disturbed satellite.

[0117] The avoidance module 903 is used to determine the interference avoidance strategy for the disturbed satellite based on the total interference intensity.

[0118] In one embodiment, the base station interference information further includes the direction of interference from the base station to the disturbed satellite; the apparatus further includes:

[0119] The statistics generation module is used to count and determine the number of base stations transmitting signals to the air within the line of sight of the interfered satellite and the beam pattern of the satellite based on the interference signal strength and interference direction, and generate an interference base station pool; the interference base station pool includes all base stations that interfere with the interfered satellite.

[0120] In one embodiment, the evasion module 903 includes:

[0121] The strategy execution module is used to determine whether to implement an interference avoidance strategy for base stations in the interference base station pool based on the severity of the total interference intensity exceeding the threshold corresponding to the satellite protection requirements. The interference avoidance strategy includes adjusting the base station's air-to-ground transmission power and / or beam direction.

[0122] In one embodiment, the policy enforcement module includes:

[0123] The difference acquisition module is used to obtain the difference between the total interference intensity and the threshold.

[0124] The first execution module is used to not execute the interference avoidance strategy for base stations in the interference base station pool when the difference is less than the first preset value.

[0125] The second execution module is used to reduce the air-to-ground transmission power of the base stations in the interference base station pool and disable the beam pointing towards the satellite when the difference is greater than or equal to the second preset value.

[0126] The third execution module is used to disable the beams of base stations in the interference base station pool pointing towards the satellite when the difference is less than the second preset value; wherein the second preset value is greater than the first preset value.

[0127] In one exemplary embodiment, an interference avoidance device is provided, applied to a base station, comprising: a transmitting module, wherein:

[0128] The transmitting module is used to send base station interference information to the core network. The base station interference information includes the interference signal strength of the base station to the disturbed satellite. The base station interference information is used to instruct the core network to superimpose the interference signal strength of all base stations that interfere with the disturbed satellite to obtain the total interference strength of the disturbed satellite. The interference avoidance strategy for the disturbed satellite is determined based on the total interference strength.

[0129] In one embodiment, the base station interference information further includes the direction of interference from the base station to the disturbed satellite; the apparatus further includes:

[0130] The scanning module is used to perform air beam scanning if the base station has an air service target.

[0131] The relevant information determination module is used to determine the relevant information of the disturbed satellite based on the preset high-orbit geostationary satellite information when a satellite air-to-ground signal is received.

[0132] The interference information determination module is used to obtain the interference signal strength and interference direction based on the relevant information of the disturbed satellite.

[0133] In one embodiment, the interference information determination module is used to obtain the spatial distance between the base station and the interfered satellite based on the relevant information of the interfered satellite, and determine the base station beam direction and total radiated power of the base station toward the interfered satellite; and to determine the base station beam direction as the interference direction, and obtain the interference signal strength based on the spatial distance and total radiated power.

[0134] In one embodiment, the relevant information of the disturbed satellite includes one or more of the following: nadir latitude and longitude, altitude, frequency band, satellite coverage radius, and satellite protection requirements.

[0135] Each module in the aforementioned interference avoidance device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of the electronic device in hardware form or independently of it, or stored in the memory of the electronic device in software form, so that the processor can call and execute the corresponding operations of each module.

[0136] In one exemplary embodiment, an electronic device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 5 As shown, this electronic device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores relevant information. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network connection. When the computer program is executed by the processor, it implements an interference avoidance method.

[0137] Those skilled in the art will understand that Figure 5 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the electronic device to which the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0138] In one exemplary embodiment, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the above-described method embodiments.

[0139] In one exemplary embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-described method embodiments.

[0140] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the above-described method embodiments.

[0141] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this 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. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0142] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0143] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An interference avoidance method, characterized in that, Applied to the core network, the method includes: Receive base station interference information from the base station; the base station interference information includes the strength of the interference signal from the base station to the disturbed satellite; The total interference intensity of the affected satellite is obtained by superimposing the interference signal strengths of all base stations that interfere with the affected satellite. An interference avoidance strategy for the affected satellite is determined based on the total interference intensity.

2. The method according to claim 1, characterized in that, The base station interference information also includes the direction of interference from the base station to the disturbed satellite; the method further includes: Based on the interference signal strength and the interference direction, the number of base stations transmitting signals to the air within the interference range of the disturbed satellite and the beam pattern of the satellite are counted and determined, and an interference base station pool is generated; the interference base station pool includes all base stations that interfere with the disturbed satellite.

3. The method according to claim 2, characterized in that, Based on the total interference intensity, an interference avoidance strategy is determined for the affected satellite, including: Based on the severity of the total interference intensity exceeding the threshold corresponding to the satellite protection requirements, it is determined whether the interference avoidance strategy should be implemented for the base stations in the interference base station pool; the interference avoidance strategy includes adjusting the air-to-ground transmission power and / or beam direction of the base station.

4. The method according to claim 3, characterized in that, Based on the severity of the total interference intensity exceeding the threshold corresponding to the satellite protection requirements, determine whether to implement the interference avoidance strategy for the base stations in the interference base station pool, including: Obtain the difference between the total interference intensity and the threshold. If the difference is less than the first preset value, the interference avoidance strategy will not be executed for the base stations in the interference base station pool. When the difference is greater than or equal to the second preset value, the air-to-ground transmission power of the base stations in the interference base station pool is reduced, and the beam pointing towards the satellite is disabled. When the difference is less than the second preset value, the beams of the base stations in the interference base station pool pointing towards the satellite are disabled; wherein the second preset value is greater than the first preset value.

5. An interference avoidance method, characterized in that, Applied to a base station, the method includes: The system sends base station interference information to the core network; the base station interference information includes the interference signal strength of the base station to the disturbed satellite; wherein, the base station interference information is used to instruct the core network to superimpose the interference signal strength of all base stations that interfere with the disturbed satellite to obtain the total interference strength of the disturbed satellite; and to determine an interference avoidance strategy for the disturbed satellite based on the total interference strength.

6. The method according to claim 5, characterized in that, The base station interference information also includes the direction of interference from the base station to the disturbed satellite; the method further includes: If the base station has an air service target, then an air beam scan is performed; When a satellite air-to-ground signal is received, the relevant information of the disturbed satellite is determined based on the preset high-orbit geostationary satellite information. Based on the relevant information of the disturbed satellite, the strength of the interference signal and the direction of interference are obtained.

7. The method according to claim 6, characterized in that, Based on the relevant information of the disturbed satellite, the strength of the interference signal and the direction of interference are obtained, including: Based on the relevant information of the disturbed satellite, the spatial distance between the base station and the disturbed satellite is obtained, and the base station beam direction and total radiation power of the base station toward the disturbed satellite are determined. The direction of the base station beam is determined as the direction of interference, and the strength of the interference signal is obtained based on the spatial spacing distance and the total radiated power.

8. The method according to claim 6 or 7, characterized in that, The relevant information of the disturbed satellite includes one or more of the following: the latitude and longitude of the nadir point, altitude, frequency band, satellite coverage radius, and satellite protection requirements.

9. An interference avoidance device, characterized in that, The device, applied to the core network, includes: A receiving module is used to receive base station interference information from a base station; the base station interference information includes the interference signal strength of the base station on the disturbed satellite; The superposition module is used to superimpose the interference signal strengths of all base stations that interfere with the disturbed satellite to obtain the total interference strength of the disturbed satellite. An interference avoidance module is used to determine an interference avoidance strategy for the disturbed satellite based on the total interference intensity.

10. An interference avoidance device, characterized in that, Applied to a base station, the device includes: A transmitting module is used to transmit base station interference information to the core network; the base station interference information includes the interference signal strength of the base station to the disturbed satellite; wherein, the base station interference information is used to instruct the core network to superimpose the interference signal strength of all base stations that interfere with the disturbed satellite to obtain the total interference strength of the disturbed satellite; and to determine an interference avoidance strategy for the disturbed satellite based on the total interference strength.

11. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 8.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

13. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

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