Satellite communication interference avoidance method, device, electronic device and storage medium

Abstract

This application provides a satellite communication interference avoidance method, apparatus, electronic device, and storage medium, applied to a satellite in a satellite communication system. The satellite communication system also includes a ground terminal. The method includes: for a ground terminal that has completed random access, scheduling a service beam pointing to the ground terminal based on a pre-configured beam angle constraint rule; wherein the beam angle constraint rule is: during the scheduling of a first service beam, the angle between the first service beam and other scheduled beams is not less than a pre-defined constraint angle. This achieves interference avoidance between beams in the satellite system and improves the communication quality of the satellite communication system.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a satellite communication interference avoidance method, device, electronic device and storage medium. Background Technology

[0002] In satellite systems, satellites typically communicate with terminals using multiple beams. If a satellite is communicating with a terminal using one beam while simultaneously communicating with other terminals using another beam, and these two beams use the same frequency domain resources during the communication process, interference may occur between the two beams, affecting the communication quality. Summary of the Invention

[0003] The purpose of this application is to provide a satellite communication interference avoidance method, apparatus, electronic device, and storage medium to avoid inter-beam interference in satellite systems and improve the communication quality of satellite communication systems. The specific technical solution is as follows:

[0004] In a first aspect, embodiments of this application provide a satellite communication interference avoidance method, the method comprising:

[0005] For ground terminals that have completed random access, the service beams pointing to the ground terminals are scheduled based on pre-configured beam angle constraint rules;

[0006] The beam angle constraint rule is as follows: during the scheduling of the first service beam, the angle between the first service beam and other scheduled beams is not less than the pre-defined constraint angle.

[0007] Optionally, when the satellite operates in time-division duplex (TDD) mode, the constraint angle is a first angle;

[0008] The first included angle satisfies the following condition:

[0009] When the angle between the service beam pointing to the first terminal and the service beam pointing to the second terminal is not less than the first angle, the distance between the first terminal and the second terminal is not less than the first distance, wherein the first distance is the minimum distance that satisfies the path loss being greater than the preset loss.

[0010] Optionally, when the satellite is operating in Frequency Division Duplex (FDD) mode,

[0011] The satellite schedules a signaling beam pointing towards the wave position center based on a polling scanning method; the constraint angle includes a second angle and a third angle.

[0012] The beam angle constraint rule is as follows: during the period when the first service beam is scheduled, the angle between the first service beam and other scheduled service beams is not less than the second angle, and the angle between the first service beam and other scheduled signaling beams is not less than the third angle.

[0013] Optionally, when the satellite supports multi-antenna polling scanning, the constraint angle includes a fourth angle, wherein during the scheduling of the first signaling beam, the angle between the first signaling beam and other scheduled signaling beams is not less than the fourth angle.

[0014] Secondly, embodiments of this application provide a satellite communication interference avoidance device, including:

[0015] The scheduling module is used to schedule service beams pointing to a ground terminal that has completed random access, based on a pre-configured beam angle constraint rule; wherein the beam angle constraint rule is: during the scheduling of a first service beam, the angle between the first service beam and other scheduled beams is not less than a pre-defined constraint angle.

[0016] Optionally, when the satellite operates in time-division duplex (TDD) mode, the constraint angle is a first angle;

[0017] The first included angle satisfies the following condition:

[0018] When the angle between the service beam pointing to the first terminal and the service beam pointing to the second terminal is not less than the first angle, the distance between the first terminal and the second terminal is not less than the first distance, wherein the first distance is the minimum distance that satisfies the path loss being greater than the preset loss.

[0019] Optionally, when the satellite operates in frequency division duplex (FDD) mode, the satellite schedules the signaling beam pointing to the beam center based on a polling scanning method; the constraint angle includes a second angle and a third angle;

[0020] The beam angle constraint rule is as follows: during the period when the first service beam is scheduled, the angle between the first service beam and other scheduled service beams is not less than the second angle, and the angle between the first service beam and other scheduled signaling beams is not less than the third angle.

[0021] Optionally, when the satellite supports multi-antenna polling scanning, the constraint angle includes a fourth angle, wherein during the scheduling of the first signaling beam, the angle between the first signaling beam and other scheduled signaling beams is not less than the fourth angle.

[0022] Thirdly, embodiments of this application provide an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0023] Memory, used to store computer programs;

[0024] The processor, when executing a program stored in memory, implements any of the satellite communication interference avoidance methods described in the first aspect.

[0025] This application also provides a computer program product containing instructions that, when run on a computer, cause the computer to execute any of the satellite communication interference avoidance methods described above.

[0026] Beneficial effects of the embodiments in this application:

[0027] The beam scheduling method, apparatus, electronic device, and storage medium provided in this application can schedule satellite beams based on beam angle constraint rules during communication between a satellite and a ground terminal. This ensures that during the scheduling of a first service beam, the angle between the first service beam and other scheduled beams is not less than a pre-defined constraint angle. In other words, the angle between a scheduled service beam and other beams at the same time is not less than a pre-defined constraint angle. Therefore, there is angular separation between the scheduled beams at the same time, avoiding interference between any two beams during satellite-ground terminal communication and improving the communication quality of the satellite communication system.

[0028] Of course, implementing any product or method of this application does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained based on these drawings.

[0030] Figure 1 This is an example diagram of the TDD frame structure in related technologies;

[0031] Figure 2 This is an example diagram of an interference scenario in TDD mode provided in the embodiments of this application;

[0032] Figure 3 This is a flowchart illustrating the satellite interference avoidance method provided in the embodiments of this application;

[0033] Figure 4This is a scenario example diagram of interference avoidance in TDD mode provided in the embodiments of this application;

[0034] Figure 5 This is an example diagram of the satellite beam provided in the embodiments of this application;

[0035] Figure 6a This is a first example diagram of beam scheduling provided in the embodiments of this application;

[0036] Figure 6b This is a second example diagram of beam scheduling provided in the embodiments of this application;

[0037] Figure 6c This is a third example diagram of beam scheduling provided in the embodiments of this application;

[0038] Figure 7 This is a schematic diagram of the satellite communication interference avoidance device provided in the embodiments of this application;

[0039] Figure 8 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art based on this application are within the scope of protection of this application.

[0041] The possible application scenarios of the embodiments of this application will be described below.

[0042] The satellite communication interference avoidance method provided in this application is applicable to application scenarios where multi-beam satellite systems communicate with ground terminals. As an example, the satellite mentioned above can be a low-Earth orbit satellite.

[0043] Specifically, in a multi-beam satellite communication system, the satellite system provides communication services to ground terminals through multiple beams. The ground terminal can be a UE (User Equipment), such as a mobile phone, tablet computer, or streaming media device; however, this application does not limit this specific type of ground terminal.

[0044] The communication scenarios between satellites and various ground terminals can be divided into two categories: random access communication scenarios and service transmission communication scenarios.

[0045] In random access communication scenarios, the satellite system scans the satellite service range by sending signaling beams, and the ground terminals that need the service randomly access the satellite through the signaling beams and report their own information.

[0046] Ground terminals that have completed random access can transmit services with satellites. Specifically, in service transmission communication scenarios, ground terminals transmit services with satellites via service beams.

[0047] Furthermore, multi-beam satellite communication systems support the simultaneous scheduling of multiple beams. Therefore, during communication between the multi-beam satellite system and the ground terminal, there may be co-channel interference between beams.

[0048] It should be understood that there are usually multiple ground terminals within the service range of a multi-beam satellite communication system, and the two types of communication scenarios mentioned above usually coexist.

[0049] This application provides a satellite communication interference avoidance method applicable to multiple scenarios. As an example, the satellite communication interference avoidance method provided in this application is applicable to communication scenarios with random access, communication scenarios with service transmission, or application scenarios where multiple communication scenarios coexist, and is used to avoid interference between beams.

[0050] Furthermore, the application scenarios of the satellite communication interference avoidance method provided in this application embodiment are not limited to the specific communication mode adopted by the multi-beam satellite system. As an example, the satellite communication interference avoidance method provided in this application embodiment can be applied to multi-beam satellite communication systems using TDD (Time Division Duplexing) mode or FDD (Frequency Division Duplexing) mode.

[0051] The specific causes of inter-beam interference may differ depending on the specific communication mode adopted by a multi-beam satellite communication system.

[0052] In multi-beam satellite communication systems, the currently used duplex communication modes include TDD and FDD. Satellite systems using these two duplex modes each have their advantages, but in actual use, they both face the problem of inter-beam interference. The two communication modes are explained below.

[0053] In satellite systems using TDD mode, the uplink and downlink share the same frequency channel but transmit data in different time slots, achieving temporal separation between information reception and transmission. However, during information transmission, the uplink signal sent by the terminal to the satellite has a certain signal strength. Since terminals typically lack beamforming capabilities, the uplink signal may, after a certain period, reach a nearby terminal, thus interfering with the downlink signal received by that nearby terminal.

[0054] Figure 1This is an example diagram of the TDD frame structure in related technologies, specifically a TDD frame structure without a GP (Guard Period) structure. Figure 1 The diagram shows the frame structure when the satellite communicates with Terminal 1 and Terminal 2. In the diagram, U represents the uplink time slot, and D represents the downlink time slot. It can be seen that... Figure 1 The frame structure shown forms an interference time window. Within this interference time window, the uplink signal sent by terminal 1 will interfere with the downlink signal received by terminal 2.

[0055] To facilitate understanding signal interference in TDD mode, the following will combine... Figure 2 To provide further explanation, Figure 2 This is a schematic diagram of an interference scenario when a satellite communication system is operating in TDD mode. Figure 2 The image shows a scenario where the satellite communicates with Terminal 1 and Terminal 2, such as... Figure 2 As shown, the uplink signal sent by terminal 1 to the satellite is not directional, and the distance between terminal 2 and terminal 1 is relatively short. Therefore, the uplink signal sent by terminal 1 still has a certain signal strength when it reaches the location of terminal 2. If the uplink signal sent by terminal 1 reaches the location of terminal 2 while terminal 2 is receiving a downlink signal, the uplink signal sent by terminal 1 will interfere with the downlink signal received by terminal 2.

[0056] Therefore, for TDD mode satellite systems, it is necessary to solve the problem of interference caused by the uplink beam of one ground terminal to the downlink beam of other ground terminals.

[0057] In satellite systems using FDD mode, the uplink and downlink use different frequency bands. However, the downlink signal transmitted by the satellite has a high signal strength. Therefore, the sidelobes of the downlink signal transmitted in one beam direction may interfere with another nearby downlink beam, resulting in a decrease in the SINR (Signal to Interference plus Noise Ratio) value and insufficient communication quality.

[0058] To address the issue of co-channel interference between downlink beams, the current solution is to use frequency division multiplexing (FDM), which divides the total bandwidth used for signal transmission into several sub-bands. These sub-bands are then used as multiple sub-channels, each of which transmits one signal, and isolation bands are established between the sub-channels.

[0059] However, existing frequency division multiplexing technologies have narrow sub-bandwidths and low transmission rates, which cannot meet the requirements of satellites for transmission rate and capacity.

[0060] To address the aforementioned problems, this application provides a satellite communication interference avoidance method, applied to a satellite in a satellite communication system. The satellite communication system also includes a ground terminal. Figure 3 This is a flowchart illustrating the satellite interference avoidance method provided in an embodiment of this application. (Refer to...) Figure 3 The method includes:

[0061] Step S301: For a ground terminal that has completed random access, schedule the service beam pointing to the ground terminal based on the pre-configured beam angle constraint rule; wherein, the beam angle constraint rule is: during the scheduling of the first service beam, the angle between the first service beam and other scheduled beams is not less than the pre-defined constraint angle.

[0062] In this embodiment of the application, service beam scheduling is performed only for ground terminals that have completed random access.

[0063] Scheduling the service beam pointing from a satellite to a ground terminal within a certain time period specifically refers to the satellite using that service beam to communicate with the ground terminal during that time period. Scheduling the service beam pointing to a specific ground terminal can also be understood as allocating communication time slot resources to that ground terminal.

[0064] In this embodiment of the application, a beam angle constraint rule is pre-configured so that during the scheduling of the first service beam, the angle between the first service beam and other scheduled beams is not less than the pre-defined constraint angle.

[0065] Specifically, the first service beam in this application embodiment may refer to all currently scheduled service beams, or a portion of the currently scheduled service beams. This application embodiment does not limit this.

[0066] As an example, during communication between satellite and terminal 1 in the direction of beam 1, beam 2 needs to be scheduled. If the angle between beam 1 and beam 2 is not less than the constraint angle, beam 2 can be scheduled; otherwise, beam 2 is not allowed to be scheduled.

[0067] The satellite communication interference avoidance method provided in this application, for ground terminals that have completed random access, can schedule service beams based on beam angle constraint rules during communication between the satellite and the ground terminal. This ensures that during the scheduling of a first service beam, the angle between the first service beam and other scheduled beams is not less than a pre-defined constraint angle. In other words, the angle between a scheduled service beam and other beams at the same time is not less than a pre-defined constraint angle. Therefore, there is angular separation between the scheduled beams at the same time, avoiding interference between any two beams during satellite-ground terminal communication and improving the communication quality of the satellite communication system.

[0068] As an example, the step of scheduling the service beam pointing to the ground terminal based on pre-configured beam angle constraint rules may specifically include:

[0069] Determine the target beam to be scheduled and the beam set of the currently scheduled beam;

[0070] Determine whether the angle between the target beam and the beams in the beam set is not less than the constraint angle. If so, schedule the target beam and return to the step of determining the target beam to be scheduled.

[0071] If not, return to the step of determining the target beam to be scheduled.

[0072] Specifically, the set of beams currently being scheduled refers to the beams that are communicating with the ground terminal.

[0073] The target beam to be scheduled currently refers to the beam that needs to be scheduled based on service requirements. If the angle between the target beam and the beams in the beam set is not less than the constraint angle, the target beam will be scheduled, and the target beam to be scheduled will be re-determined, that is, it will be determined whether other beams in the satellite system can be scheduled.

[0074] If the angle between the target beam and the beams in the beam set is less than the constraint angle, the target beam is not allowed to be scheduled at the moment, and the target beam to be scheduled is re-determined, that is, it is determined whether other beams in the satellite system can be scheduled.

[0075] As can be seen, the satellite communication interference avoidance method provided in this application determines the target beam to be scheduled and the set of beams currently being scheduled, then determines whether the angle between the target beam and the beams in the beam set is not less than the constraint angle, and then determines whether the target beam is allowed to be scheduled, thus achieving that the angle between any two beams scheduled at the same time is not less than the constraint angle.

[0076] In one embodiment of this application, the included angle between the two beams is the included angle between the main lobes of the two beams.

[0077] The signal transmitted on the beam usually has the highest signal strength in the direction of the main lobe. In this embodiment, the angle between the main lobes is used as the angle between the beams to ensure the effect of avoiding inter-beam interference.

[0078] In one embodiment of this application, when the satellite operates in TDD mode, the constraint angle is a first angle, and the satellite beam is a service beam, the first angle can satisfy the following conditions:

[0079] When the angle between the service beam pointing to the first terminal and the service beam pointing to the second terminal is not less than the first angle, the distance between the first terminal and the second terminal is not less than the first distance, where the first distance is the minimum distance that satisfies the path loss being greater than the preset loss.

[0080] As mentioned earlier, in TDD satellite systems, the uplink signal transmitted by a terminal still retains a certain signal strength when it propagates to the location of a nearby terminal. Therefore, in this embodiment, the distance between the terminals corresponding to the two beams is constrained by limiting the angle between the two beams, ensuring that this distance is greater than a first distance. The first distance is set as the minimum distance that satisfies the path loss being greater than a preset loss. This can be understood as the uplink signal transmitted by the terminal having undergone a longer transmission distance, resulting in greater path loss and no longer interfering with the other terminal.

[0081] In other words, when the distance between the first terminal and the second terminal is not less than the first distance, it can be considered that no problem will occur. Figure 2 The interference shown.

[0082] It should be understood that the preset loss can be reasonably set based on parameters such as the terminal's transmit power and the signal receiving capability of the terminal antenna. The first distance is determined based on the preset loss, as long as the uplink signal transmitted by the terminal does not interfere with the downlink reception of the other terminal after passing through the first distance. Correspondingly, based on the first distance, a corresponding first angle can be set such that when the angle between the first beam pointing to the first terminal and the second beam pointing to the second terminal is not less than the first angle, the distance between the first terminal and the second terminal is not less than the first distance.

[0083] As an example, see Figure 4 , Figure 4 This is a schematic diagram illustrating interference avoidance scenarios when a satellite operates in TDD mode, as provided in an embodiment of this application. The first angle is represented by D°. It can be seen that when terminal 1 sends an uplink signal to the satellite in the direction of beam 1, the angle between beam 2 (the satellite pointing to terminal 2) and beam 1 is less than D°. Therefore, it cannot be guaranteed that the distance between terminal 1 and terminal 2 is less than the first distance. Consequently, the uplink signal sent by terminal 1 still has a strong signal strength when it reaches terminal 2. If terminal 2 receives a downlink signal from the satellite in the direction of beam 2 at this time, the uplink signal sent by terminal 1 will interfere with terminal 2. Therefore, beam 2 cannot be scheduled during communication between the satellite and terminal 1.

[0084] The angle between beam 3 and beam 1, which are directed by the satellite to terminal 3, is greater than D°. This means the distance between terminal 1 and terminal 3 is less than the first distance. Therefore, the uplink signal transmitted by terminal 1 is significantly attenuated by the time it reaches terminal 3. Even if the satellite transmits downlink signals to terminal 3 in the direction of beam 3, the uplink signal transmitted by terminal 1 will not interfere with terminal 3. This allows for the scheduling of beam 3, meaning the satellite can provide communication services to terminal 3 in the direction of beam 3.

[0085] The satellite communication interference avoidance method provided in this application, when applied to a TDD-mode satellite communication system, constrains the distance between terminals communicating with the satellite simultaneously by limiting the constraint angle between beams. This ensures that by the time the uplink signal transmitted by a terminal in each scheduled beam reaches the location of other terminals receiving downlink signals, the signal strength has been significantly attenuated. This prevents the uplink signal transmitted by a terminal from interfering with the downlink reception of nearby terminals, effectively avoiding interference in TDD-mode satellite communication.

[0086] In one embodiment of this application, when the satellite is operating in FDD mode, the satellite schedules the signaling beam pointing to the beam center based on a polling scanning method; the constraint angle includes a second angle and a third angle.

[0087] Since the downlink signaling beam and downlink service beam of a satellite are on the same frequency in FDD mode, the signaling beam also needs to be considered when scheduling the service beam in order to better avoid interference.

[0088] Among them, the signaling beam is the beam that carries signaling messages, such as the beam scheduled by the satellite during random access, pointing to the ground position center. The satellite schedules the signaling beam pointing to the position center based on a polling scanning method. For example, if there are 10 position centers within the ground coverage area of ​​the satellite, the satellite will sequentially schedule the signaling beam pointing to the position centers numbered 1-10 based on a polling scanning method.

[0089] Correspondingly, the service beam is the beam that carries service data and is usually directed to a specific user terminal.

[0090] In this scenario, the beam angle constraint rule is: during the scheduling of the first service beam, the angle between the first service beam and other scheduled service beams is not less than the second angle, and the angle between the first service beam and other scheduled signaling beams is not less than the third angle.

[0091] Specifically, the first service beam here may refer to all service beams currently scheduled when the satellite is operating in FDD mode, or a portion of all service beams currently scheduled. This application embodiment does not limit this.

[0092] That is, the service beams pointing to the ground terminal are scheduled so that the angle between any two service beams scheduled at the same time is not less than the second angle, and the angle between the service beam and the signaling beam scheduled at the same time is not less than the third angle.

[0093] Specifically, in satellite communication systems using FDD mode, satellites transmit downlink beam signals in multiple beam directions within the frequency band used to transmit downlink signals. Furthermore, the sidelobes of the downlink beam signals also have high signal strength. Therefore, the downlink beam signal in one beam direction may cause sidelobe interference to a terminal in another adjacent beam direction.

[0094] Figure 5 This is an example diagram of the satellite beam provided in the embodiments of this application. Figure 5 The diagram shows three service beams and three signaling beams, specifically three downlink service beams and three downlink signaling beams. Figure 5 The circular shading represents the wavefront center, and the triangular shading represents the ground terminal. It can be seen that the signaling beam points towards the ground wavefront center, while the service beam serves the ground terminal.

[0095] Figure 5 In the example shown, service beam 1 points to terminal 1, service beam 2 points to terminal 2, and the angle between service beam 1 and service beam 2 is small. Therefore, terminal 1 may be interfered with by the sidelobes of service beam 2, and terminal 2 may be interfered with by the sidelobes of service beam 1.

[0096] To facilitate understanding, the following section, with reference to the accompanying diagram, explains how to avoid satellite communication interference in FDD mode.

[0097] Figure 6a This is a first example diagram of satellite communication interference avoidance in FDD mode provided in the embodiments of this application, with A° representing the second included angle. Figure 6a The three service beams shown in the figure have main lobe angles of a1, a2, and a3 between each pair of beams. When these three service beams are simultaneously scheduled, the angles between the main lobes must satisfy a1, a2, and a3. n ≥A° (n=1, 2, 3).

[0098] Figure 6b This is a second example diagram of satellite communication interference avoidance in FDD mode provided in the embodiments of this application, where the third included angle is represented by B°. Figure 6b The diagram shows the angles between one service beam and three signaling beams, b1, b2, and b3, respectively. When these three signaling beams are being scheduled, to schedule the service beam, the angle between the main lobes of this service beam and the three signaling beams must satisfy b1, b2, and b3. n ≥B° (n=1, 2, 3).

[0099] To improve the effectiveness of avoiding inter-beam interference, the second and third included angles can be set appropriately.

[0100] As can be seen, the satellite communication interference avoidance method provided in this application constrains the angle between signaling beams scheduled at the same time and the angle between signaling beams and service beams by using the second angle and the third angle, respectively, so that the angle between any two downlink beams is greater than the constrained angle. Thus, between any two downlink beams scheduled at the same time, the sidelobe of one beam will not affect the other beam, thereby reducing the interference of the sidelobes of other beams received by the terminal.

[0101] In one embodiment of this application, when the satellite supports multi-antenna polling scanning, the constraint angle includes a fourth angle, and during the scheduling of the first signaling beam, the angle between the first signaling beam and other scheduled signaling beams is not less than the fourth angle.

[0102] Specifically, the first signaling beam here can refer to all signaling beams currently being scheduled when the satellite is operating in FDD mode, or a portion of the signaling beams currently being scheduled. This application does not limit this to specific beams.

[0103] Specifically, when a satellite supports multi-antenna polling scanning, it can simultaneously schedule different signaling beams. To better avoid interference, a fourth angle can be set. When a satellite schedules signaling beams simultaneously based on multiple antennas, the angle between the signaling beams can be limited.

[0104] As an example, Figure 6c This is a third example diagram of satellite communication interference avoidance in FDD mode provided in the embodiments of this application, where C° represents the fourth included angle. Figure 6c The three signaling beams shown in the figure have main lobe angles of c1, c2, and c3 between each pair of beams. When these three signaling beams are simultaneously scheduled, the angles between the main lobes must satisfy c1, c2, and c3. n ≥C° (n=1, 2, 3).

[0105] The satellite communication interference avoidance method provided in this application, based on pre-configured beam angle constraint rules, schedules satellite beams so that the angle between any two scheduled beams at the same time is not less than the pre-defined constraint angle. This interference avoidance method can effectively avoid interference caused by the uplink signal of one terminal to the downlink reception of another terminal when the satellite is operating in TDD mode, and it can also effectively avoid interference from beam sidelobes received by the terminal when the satellite is operating in FDD mode, demonstrating strong applicability to various scenarios.

[0106] This application also provides a satellite communication interference avoidance device. Figure 7 This is a schematic diagram of the satellite communication interference avoidance device provided in the embodiments of this application, as shown below. Figure 7 As shown, the device includes:

[0107] The scheduling module 701 is used to schedule service beams pointing to a ground terminal that has completed random access, based on a pre-configured beam angle constraint rule; wherein the beam angle constraint rule is: during the scheduling of a first service beam, the angle between the first service beam and other scheduled beams is not less than a pre-defined constraint angle.

[0108] In one embodiment of this application, when the satellite operates in Time Division Duplex (TDD) mode, the constraint angle is a first angle;

[0109] The first included angle satisfies the following condition:

[0110] When the angle between the service beam pointing to the first terminal and the service beam pointing to the second terminal is not less than the first angle, the distance between the first terminal and the second terminal is not less than the first distance, wherein the first distance is the minimum distance that satisfies the path loss being greater than the preset loss.

[0111] In one embodiment of this application, when the satellite operates in frequency division duplex (FDD) mode, the satellite schedules the signaling beam pointing to the beam center based on a polling scanning method; the constraint angle includes a second angle and a third angle;

[0112] The beam angle constraint rule is as follows: during the scheduling of the first service beam, the angle between the first service beam and other scheduled service beams is not less than the second angle, and the angle between the first service beam and other scheduled signaling beams is not less than the third angle.

[0113] In one embodiment of this application, when the satellite supports multi-antenna polling scanning, the constraint angle includes a fourth angle, and during the scheduling of the first signaling beam, the angle between the first signaling beam and other scheduled signaling beams is not less than the fourth angle.

[0114] The satellite communication interference avoidance device provided in this application embodiment, for a ground terminal that has completed random access, can schedule service beams based on beam angle constraint rules during communication between the satellite and the ground terminal. This ensures that during the scheduling of a first service beam, the angle between the first service beam and other scheduled beams is not less than a pre-defined constraint angle. In other words, the angle between a scheduled service beam and other beams at the same time is not less than a pre-defined constraint angle. Therefore, there is angular separation between the scheduled beams at the same time, avoiding interference between any two beams during satellite-ground terminal communication, and improving the communication quality of the satellite communication system.

[0115] This application also provides an electronic device, such as... Figure 8 As shown, it includes a processor 801, a communication interface 802, a memory 803, and a communication bus 804, wherein the processor 801, the communication interface 802, and the memory 803 communicate with each other through the communication bus 804.

[0116] Memory 803 is used to store computer programs;

[0117] When processor 801 executes a program stored in memory 803, it performs the following steps:

[0118] For ground terminals that have completed random access, the service beams pointing to the ground terminals are scheduled based on pre-configured beam angle constraint rules;

[0119] The beam angle constraint rule is as follows: during the scheduling of the first service beam, the angle between the first service beam and other scheduled beams is not less than the pre-defined constraint angle.

[0120] The communication bus mentioned in the above electronic devices can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not mean that there is only one bus or one type of bus.

[0121] The communication interface is used for communication between the aforementioned electronic devices and other devices.

[0122] The memory may include random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0123] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0124] Using the electronic equipment provided in this application embodiment, for a ground terminal that has completed random access, during communication between the satellite and the ground terminal, service beams can be scheduled based on beam angle constraint rules. This ensures that during the scheduling of a first service beam, the angle between the first service beam and other scheduled beams is not less than a pre-defined constraint angle. In other words, the angle between a scheduled service beam and other beams at the same time is not less than a pre-defined constraint angle. Therefore, there is angular separation between the scheduled beams at the same time, avoiding interference between any two beams during satellite-ground terminal communication, and improving the communication quality of the satellite communication system.

[0125] In another embodiment provided in this application, a computer-readable storage medium is also provided, which stores a computer program that, when executed by a processor, implements the steps of any of the above-described satellite communication interference avoidance methods.

[0126] In another embodiment provided in this application, a computer program product containing instructions is also provided, which, when run on a computer, causes the computer to execute any of the satellite communication interference avoidance methods described in the above embodiments.

[0127] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (SSD)).

[0128] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0129] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the embodiments of satellite communication interference avoidance devices, electronic devices, and storage media are basically similar to the embodiments of satellite communication interference avoidance methods, so the descriptions are relatively simple. Relevant parts can be referred to in the descriptions of the satellite communication interference avoidance method embodiments.

[0130] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A satellite communication interference avoidance method, characterized in that, The satellite is used in a satellite communication system, which also includes a ground terminal, and the method includes: For ground terminals that have completed random access, the service beams pointing to the ground terminals are scheduled based on pre-configured beam angle constraint rules; The beam angle constraint rule is as follows: during the scheduling of the first service beam, the angle between the first service beam and other scheduled beams is not less than the pre-defined constraint angle. When the satellite is operating in Time Division Duplex (TDD) mode, the constraint angle is the first angle. The first included angle satisfies the following condition: when the included angle between the service beam of the satellite pointing to the first terminal and the service beam of the satellite pointing to the second terminal is not less than the first included angle, the distance between the first terminal and the second terminal is not less than the first distance, wherein the first distance is the minimum distance that satisfies the path loss being greater than the preset loss; or, When the satellite operates in frequency division duplex (FDD) mode, the satellite schedules the signaling beam pointing to the beam center based on a polling scanning method; the constraint angle includes a second angle and a third angle. The beam angle constraint rule is as follows: during the period when the first service beam is scheduled, the angle between the first service beam and other scheduled service beams is not less than the second angle, and the angle between the first service beam and other scheduled signaling beams is not less than the third angle.

2. The method according to claim 1, characterized in that, When the satellite supports multi-antenna polling scanning, the constraint angle includes a fourth angle, and during the scheduling of the first signaling beam, the angle between the first signaling beam and other scheduled signaling beams is not less than the fourth angle.

3. A satellite communication interference avoidance device, characterized in that, A satellite used in a satellite communication system, the satellite communication system further including a ground terminal, the device comprising: The scheduling module is used to schedule the service beams pointing to the ground terminal based on the pre-configured beam angle constraint rules for the ground terminal that has completed random access. The beam angle constraint rule is as follows: during the scheduling of the first service beam, the angle between the first service beam and other scheduled beams is not less than the pre-defined constraint angle. When the satellite is operating in Time Division Duplex (TDD) mode, the constraint angle is the first angle. The first included angle satisfies the following condition: when the included angle between the service beam of the satellite pointing to the first terminal and the service beam of the satellite pointing to the second terminal is not less than the first included angle, the distance between the first terminal and the second terminal is not less than the first distance, wherein the first distance is the minimum distance that satisfies the path loss being greater than the preset loss; or, When the satellite operates in frequency division duplex (FDD) mode, the satellite schedules the signaling beam pointing to the beam center based on a polling scanning method; the constraint angle includes a second angle and a third angle. The beam angle constraint rule is as follows: during the period when the first service beam is scheduled, the angle between the first service beam and other scheduled service beams is not less than the second angle, and the angle between the first service beam and other scheduled signaling beams is not less than the third angle.

4. The apparatus according to claim 3, characterized in that, When the satellite supports multi-antenna polling scanning, the constraint angle includes a fourth angle, and during the scheduling of the first signaling beam, the angle between the first signaling beam and other scheduled signaling beams is not less than the fourth angle.

5. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the steps of the method described in any one of claims 1-2.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method described in any one of claims 1-2.

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