Low earth orbit satellite communication resource scheduling system and method based on phased array antenna
The low-Earth orbit satellite communication resource scheduling system based on phased array antennas solves the problems of real-time and flexible resource scheduling in low-Earth orbit satellite communication systems, achieving efficient resource allocation and all-time, all-area coverage, and improving service quality and security.
Patent Information
- Application Number
- CN202211325350.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-10-27
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2042-10-27
AI Technical Summary
Existing low-Earth orbit satellite communication systems suffer from poor real-time performance and flexibility in resource scheduling, making it difficult to achieve dynamic and intelligent allocation, which affects service quality and efficiency.
A low-Earth orbit (LEO) satellite communication resource scheduling system based on phased array antennas is adopted. The communication resources of LEO satellites are scheduled through high-Earth orbit (HEO) satellite phased array antennas. The communication quality is judged and resources are adjusted by using data earth stations, phased array antenna control systems and resource scheduling processing systems, and LEO satellites that meet the quality requirements are selected to take over the service.
It achieves full-time and full-domain coverage of low-Earth orbit satellites and efficient resource utilization, improves bandwidth resource utilization and service quality, can adjust resource allocation in real time according to the situation, avoids collision threats between low-Earth orbit constellations, and ensures spacecraft safety.
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Figure CN115694612B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of satellite communication technology, in particular to a low-orbit satellite communication resource scheduling system and method based on phased array antenna. BACKGROUND
[0002] After 2010, driven by broadband Internet application and commercial aerospace technology mature development, low-orbit satellite communication systems based on Ku and Ka frequency bands have developed rapidly. Foreign countries have successively launched OneWeb, Starlink, Telesat and other systems, positioning to provide global broadband Internet access services, which are referred to as satellite Internet in the industry, and the essence is the product of the combination of low-orbit satellite communication technology and Internet application. Taking Starlink as an example, it is a low-orbit satellite Internet system proposed by SpaceX in 2015, aiming to complete the deployment of more than ten thousand low-orbit satellites and provide global Internet access services.
[0003] However, how to complete large-scale satellite measurement and control and resource scheduling of low-orbit constellation is a core problem in the development of current low-orbit Internet, in addition to the low-orbit Internet relying on intelligent on-board computers to complete resource integration and coordination, resource proxy processing can also be completed through ground gateway stations, and the maturity of the following two methods is weak:
[0004] (1) The resource scheduling method based on low-orbit constellation interconnection is to construct a resource scheduling system based on low-orbit Internet, to collect data of resource service conditions of each communication satellite through interconnection, to analogize low-orbit communication satellites to ground base stations, and to complete user access and exit network services through network access protocol. In this case, resource allocation, bandwidth spectrum setting need to be completed in advance before the user terminal accesses the network, and then fixed use is unified.
[0005] (2) The resource scheduling method based on low-orbit satellite gateway station is that low-orbit communication satellites serve as communication satellites, and the gateway station bears the corresponding low-orbit communication satellite measurement and control functions. Therefore, the on-board resource allocation of communication satellites is usually completed by manual operation, and due to the visibility problem of ground gateway stations to communication satellites, resource scheduling modification usually needs to be completed within a specific time range, and real-time performance and flexibility are poor. SUMMARY
[0006] The purpose of the present application is to realize dynamic intelligent allocation of low-orbit satellite communication services, improve the service quality and resource allocation efficiency of low-orbit Internet, and provide a low-orbit satellite communication resource scheduling system and method based on phased array antenna.
[0007] In order to achieve the above-mentioned application purpose, the embodiments of the present application provide the following technical solutions:
[0008] The low-orbit satellite communication resource scheduling system based on phased array antenna is used for scheduling the communication resources of low-orbit satellites through the phased array antenna of high-orbit satellites, and comprises:
[0009] The data earth station is used for transmitting the communication data between the phased array antenna of high-orbit satellites and the high-orbit phased array antenna control system, and the communication data is the communication data of low-orbit satellites.
[0010] The high-orbit phased array antenna control system is used for judging the communication quality of the low-orbit satellite according to the communication data of the low-orbit satellite transmitted by the phased array antenna of high-orbit satellites.
[0011] The resource scheduling processing system is used for selecting the low-orbit satellite satisfying the communication quality requirement to replace the low-orbit satellite not satisfying the communication quality requirement for communication service according to the communication quality of the low-orbit satellite obtained by the high-orbit phased array antenna control system.
[0012] Further, the high-orbit phased array antenna control system comprises a data return control unit, and the data return control unit comprises a return data parser and a return data target protocol converter.
[0013] The return data parser is used for parsing the communication data of the low-orbit satellite transmitted by the data earth station, and the parsed communication data comprises the low-orbit satellite identifier, the current spatial coordinates, the service target, the number of service targets, the service time length, the service quality, and the time code. The communication data is analyzed, and whether the related parameters of the service quality and the related parameters of the service quality when the communication task of the low-orbit satellite is constructed are within the threshold range is compared. If they are within the threshold range, it is judged that the communication quality of the low-orbit satellite satisfies the requirement, otherwise, it is judged that the communication quality does not satisfy the requirement.
[0014] The return data target protocol converter is used for sending the parsed communication data and the communication quality judgment result to the resource scheduling processing system.
[0015] Further, the resource scheduling processing system comprises a resource planning unit, an instruction generation unit, a link planning unit, and a protocol conversion unit.
[0016] The resource planning unit is used for performing resource adjustment calculation according to the communication task, selecting the low-orbit satellite satisfying the communication quality requirement to replace the low-orbit satellite not satisfying the communication quality requirement for communication service, and performing service sorting on the low-orbit satellite satisfying the communication quality requirement.
[0017] The instruction generation unit is used for generating instructions according to the service sorting of the low-orbit satellite, and the instructions comprise the low-orbit satellite identifier, the low-orbit satellite spatial coordinates, the service target identifier, the service target spatial coordinates, and the service requirement.
[0018] The link planning unit is configured to form a phased array antenna data transmission link pointing according to the low-orbit satellite identifier and the low-orbit satellite spatial coordinates, and generate an instruction beam adjustment code, which is carried in the instruction generated by the instruction generation unit.
[0019] The protocol conversion unit is configured to convert the instruction into a communication protocol of the low-orbit satellite and then send the instruction to the high-orbit phased array antenna control system.
[0020] Further, the high-orbit phased array antenna control system further comprises a data forward control unit, and the data forward control unit comprises a forward data adaptive encoder, a forward data queue manager, and a forward data resource controller.
[0021] The forward data adaptive encoder is configured to encode the plurality of instructions generated by the resource scheduling processing system.
[0022] The forward data queue manager is configured to queue sort the plurality of instructions according to the encoding.
[0023] The forward data resource controller is configured to send the instructions to the data earth station in sequence according to the queue sorting of the plurality of instructions.
[0024] Further, the high-orbit satellite phased array antenna is configured to receive the instructions sent by the data earth station, analyze the instruction beam adjustment code in the instructions, and transmit the instructions to the low-orbit satellite that does not meet the quality requirement and the low-orbit satellite that meets the quality requirement respectively, so that the low-orbit satellite that meets the quality requirement takes over the low-orbit satellite that does not meet the quality requirement to provide communication services.
[0025] The low-orbit satellite communication resource scheduling method based on the phased array antenna comprises the following steps.
[0026] Step 1: The high-orbit satellite phased array antenna acquires communication data of the low-orbit satellite, and sends the communication data to the data earth station, and the data earth station sends the communication data to the high-orbit phased array antenna control system.
[0027] Step 2: The high-orbit phased array antenna control system analyzes and analyzes the communication data of the low-orbit satellite, and judges whether the communication quality of the low-orbit satellite meets the communication quality requirement.
[0028] Step 3: The resource scheduling processing system selects the low-orbit satellite that meets the communication quality requirement to take over the low-orbit satellite that does not meet the communication quality requirement to provide communication services according to the communication quality of the low-orbit satellite obtained by the high-orbit phased array antenna control system.
[0029] Further, the step 2 specifically comprises the following steps.
[0030] Step 2-1, the data return control unit analyzes the communication data of the low-orbit satellite transmitted by the data earth station, and the analyzed communication data includes the low-orbit communication satellite identifier, the current spatial coordinates, the service target, the number of service targets, the service time length, the service quality, and the time code;
[0031] Step 2-2, the data return control unit analyzes the communication data, compares whether the related parameters of the service quality and the related parameters of the service quality when constructing the communication task of the low-orbit satellite are within the threshold range, if within the threshold range, it is judged that the communication quality of the low-orbit satellite meets the requirements, otherwise it is judged that the communication quality does not meet the requirements;
[0032] Step 2-3, the data return control unit sends the analyzed communication data and the judgment result of whether the communication quality is met to the resource scheduling processing system.
[0033] Further, the step 3 specifically includes the following steps:
[0034] Step 3-1, the hierarchical dynamic secondary index constructed in the resource planning unit includes a low-orbit satellite evaluation M, a data information transmission effect evaluation T, and a user service unit evaluation C; wherein the three-level indexes of the low-orbit satellite evaluation M include a low-orbit satellite level l and a low-orbit satellite service type s; the three-level indexes of the data information transmission effect evaluation T include a data transmission rate v and a data volume size c; and the three-level indexes of the user service unit evaluation C include an influence degree f and a user center priority p;
[0035] The resource planning unit calculates the weight values of the six three-level indexes after normalization according to the communication task:
[0036]
[0037] Wherein, n represents the number of three-level indexes, n=6; j represents the jth three-level index; i represents the ith low-orbit satellite; a ij represents the attribute value of the jth three-level index in the communication quality weight of the ith low-orbit satellite; represents the weight value of the jth three-level index of the ith low-orbit satellite;
[0038] The expression of the sorting vector of the low-orbit satellite i is calculated as:
[0039]
[0040]
[0041]
[0042] Wherein, represents the weight value of the data information transmission effect evaluation of the ith low-orbit satellite; a user service unit evaluation weight value of the i-th low earth orbit satellite is represented;
[0043] In step 3-2, the resource planning unit selects a low earth orbit satellite that meets the communication quality requirement to replace a low earth orbit satellite that does not meet the communication quality requirement to provide communication services, and ranks the low earth orbit satellites that meet the communication quality requirement;
[0044] In step 3-3, the instruction generating unit generates an instruction according to the service ranking of the low earth orbit satellites, and the instruction includes a low earth orbit satellite identifier, a low earth orbit satellite spatial coordinate, a service target identifier, a service target spatial coordinate, and a service requirement.
[0045] In step 3-4, the link planning unit forms a phased array antenna data transmission link pointing according to the low earth orbit satellite identifier and the low earth orbit satellite spatial coordinate, generates an instruction beam adjustment code, and carries the instruction beam adjustment code in the instruction generated by the instruction generating unit.
[0046] In step 3-5, the protocol conversion unit converts the instruction according to the communication protocol of the low earth orbit satellite and sends it to the high orbit phased array antenna control system.
[0047] Further, step 4 is further included, in which the high orbit phased array antenna control system sends the instruction to a data earth station, the data earth station sends the instruction to a high orbit satellite phased array antenna, the high orbit satellite phased array antenna analyzes the instruction beam adjustment code, and the instruction is transmitted to the low earth orbit satellite that does not meet the quality requirement and the low earth orbit satellite that meets the quality requirement, respectively, so that the low earth orbit satellite that meets the quality requirement replaces the low earth orbit satellite that does not meet the quality requirement to provide communication services.
[0048] Compared with the prior art, the present application has the following advantages:
[0049] The present application considers the application advantages of geostationary orbit satellites (high orbit satellites), and uses a phased array antenna to build a multiple access service that can provide services to medium and low speed users, thereby achieving full-time and full-area coverage of medium and low orbit spacecraft. Based on the multiple access service of high orbit satellites, communication service data received by low orbit satellites is uploaded and processed, and an instruction is formed and directly sent to the low orbit satellites, thereby solving the communication resource scheduling problem of the low orbit satellites and completing a reliable low orbit internet system.
[0050] Compared with the preset service resources of the traditional low orbit internet, the present application improves the bandwidth resource utilization rate and can more efficiently optimize and adjust the service system.
[0051] Compared with the traditional low orbit satellite ground station, the present application can obtain satellite communication service quality at all times and in all areas, and timely adjust the resource scheduling and distribution according to the situation, thereby improving the ability to dynamically optimize satellite service resources.
[0052] To avoid the threat of collisions between low-Earth orbit (LEO) constellations, this invention also performs dynamic trajectory prediction of LEO satellites based on their current spatial coordinates, enabling real-time monitoring and, when necessary, issuing emergency commands to ensure the safety of other spacecraft. Attached Figure Description
[0053] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0054] Figure 1 This is a schematic diagram of the low-orbit satellite communication resource scheduling system of the present invention. Detailed Implementation
[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0056] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance, or suggesting any such actual relationship or order between these entities or operations.
[0057] Example 1:
[0058] This invention is achieved through the following technical solutions, such as... Figure 1 As shown, a low-orbit satellite communication resource scheduling system based on a phased array antenna is used to schedule the communication resources of low-orbit satellites through a high-orbit satellite phased array antenna. The system includes a data earth station, a high-orbit phased array antenna control system, and a resource scheduling processing system.
[0059] The phased array antenna of the high-orbit satellite receives communication data from various low-orbit satellites and transmits the communication data to the data earth station.
[0060] The data earth station receives the communication data transmitted by the high-orbit satellite phased array antenna, and sends the communication data to the high-orbit satellite phased array antenna control system, wherein the communication data is the communication data of the low-orbit satellite.
[0061] The high-orbit satellite phased array antenna control system determines the communication quality of the low-orbit satellite according to the communication data of the low-orbit satellite transmitted by the high-orbit satellite phased array antenna.
[0062] The resource scheduling processing system selects the low-orbit satellite satisfying the communication quality requirement to replace the low-orbit satellite not satisfying the communication quality requirement for communication service according to the communication quality of the low-orbit satellite obtained by the high-orbit satellite phased array antenna control system, and sends the instruction of the newly generated communication service to the data earth station through the high-orbit satellite phased array antenna control system, so that the data earth station transmits the instruction to the high-orbit satellite phased array antenna.
[0063] The high-orbit satellite phased array antenna analyzes the received instruction, and transmits the instruction to the low-orbit satellite not satisfying the quality requirement and the low-orbit satellite satisfying the quality requirement according to the requirement in the instruction, so that the low-orbit satellite satisfying the quality requirement replaces the low-orbit satellite not satisfying the quality requirement for communication service, and the closed-loop resource scheduling of the low-orbit satellite communication is completed.
[0064] In detail, please continue to refer to Figure 1 The high-orbit satellite phased array antenna control system comprises a data return control unit, and the data return control unit comprises a return data parser and a return data target protocol converter.
[0065] The return data parser is configured to parse the communication data of the low-orbit satellite transmitted by the data earth station, and the parsed communication data comprises a low-orbit communication satellite identifier, a current spatial coordinate, a service target, a service target quantity, a service time length, a service quality, and a time code. The communication data is analyzed, and whether the related parameters of the service quality and the related parameters of the service quality when the communication task of the low-orbit satellite is constructed are within a threshold range is compared. If the related parameters are within the threshold range, it is determined that the communication quality of the low-orbit satellite satisfies the requirement, otherwise, it is determined that the communication quality does not satisfy the requirement.
[0066] The return data target protocol converter is configured to send the parsed communication data and the communication quality determination result to the resource scheduling processing system.
[0067] Then, the resource scheduling processing system comprises a resource planning unit, an instruction generation unit, a link planning unit, and a protocol conversion unit.
[0068] The resource planning unit is configured to perform resource adjustment calculation according to the communication task, select the low-orbit satellite satisfying the communication quality requirement to replace the low-orbit satellite not satisfying the communication quality requirement for communication service, and perform service sorting on the low-orbit satellite satisfying the communication quality requirement.
[0069] The instruction generating unit is configured to generate instructions according to the service order of the low-orbit satellite, the instructions including a low-orbit satellite identifier, a low-orbit satellite spatial coordinate, a service target identifier, a service target spatial coordinate, and service requirements.
[0070] The link planning unit is configured to form a phased array antenna data transmission link pointing according to the low-orbit satellite identifier and the low-orbit satellite spatial coordinate, and generate an instruction beam adjustment code, which is carried in the instructions generated by the instruction generating unit.
[0071] The protocol conversion unit is configured to convert the instructions into a communication protocol of the low-orbit satellite and then send the instructions to the high-orbit phased array antenna control system.
[0072] Further, the high-orbit phased array antenna control system further includes a data forward control unit, and the data forward control unit includes a forward data adaptive encoder, a forward data queue manager, and a forward data resource controller.
[0073] The forward data adaptive encoder is configured to encode a plurality of instructions generated by the resource scheduling processing system.
[0074] The forward data queue manager is configured to queue sort the plurality of instructions according to the encoding.
[0075] The forward data resource controller is configured to send the instructions to the data earth station in sequence according to the queue sort of the plurality of instructions.
[0076] Based on the above system, the application further provides a low-orbit satellite communication resource scheduling method based on a phased array antenna, please refer to Figure 1 , which includes the following steps:
[0077] Step 1: The high-orbit satellite phased array antenna acquires communication data of the low-orbit satellite and sends the communication data to the data earth station, and the data earth station sends the communication data to the high-orbit phased array antenna control system.
[0078] Suppose that the low-orbit satellite A and the low-orbit satellite B send their communication data to the high-orbit satellite phased array antenna through the interstellar antenna, and the sent communication data includes information such as the number of service targets, the service duration, and the service quality. Then, the high-orbit satellite phased array antenna sends the communication data of the low-orbit satellite to the data earth station regularly or irregularly. The data earth station forwards the data frame packet formed after encoding the communication data to the high-orbit phased array antenna control system.
[0079] Step 2: The high-orbit phased array antenna control system analyzes and analyzes the communication data of the low-orbit satellite, and judges whether the communication quality of the low-orbit satellite meets the communication quality requirements.
[0080] In the interior of the high orbit phased array antenna control system, the return data parser parses the data frame packet, and the parsed content is: low orbit communication satellite identification, current spatial coordinates, service target, service target quantity, service time length, service quality, time code.
[0081] Then the return data parser analyzes the communication data, and compares whether the related parameters of the service quality are within the threshold range when the communication task of the low orbit satellite is constructed. If it is within the threshold range, it is judged that the communication quality of the low orbit satellite meets the requirements, the satellite running state is saved, and no processing is done, and the original low orbit satellite continues to perform communication service. Otherwise, it is determined that the communication quality does not meet the requirements, and a low orbit satellite that meets the communication quality requirements is selected to replace it, that is, the communication quality of other low orbit satellites within the radius near the low orbit satellite is predicted, and the optimal low orbit satellite is selected to replace the low orbit satellite whose communication quality does not meet the requirements.
[0082] Suppose that this time the low orbit satellite A does not meet the communication quality requirements, and the low orbit satellite B meets the communication quality requirements. It should be noted that when judging whether the low orbit satellite meets the communication quality requirements, the satellite control personnel or user can set the related parameters according to the actual situation, and the embodiment does not limit it.
[0083] The return data target protocol converter is used to send the parsed communication data and the communication quality judgment result to the resource scheduling processing system.
[0084] Step 3, the resource scheduling processing system selects a low orbit satellite that meets the communication quality requirements to replace a low orbit satellite that does not meet the communication quality requirements to perform communication service according to the communication quality of the low orbit satellite obtained by the high orbit phased array antenna control system.
[0085] Please refer to Table 1, the hierarchical dynamic two-level indicators constructed in the resource planning unit include low orbit satellite evaluation M, data information transmission effect evaluation T, and user service unit evaluation C; wherein the three-level indicators of the low orbit satellite evaluation M include low orbit satellite grade l and low orbit satellite service type s; the three-level indicators of the data information transmission effect evaluation T include data transmission rate v and data volume size c; the three-level indicators of the user service unit evaluation C include influence degree f and user center priority p, and corresponding weights are assigned.
[0086] Table 1 Hierarchical dynamic index weight matrix structure
[0087]
[0088] Considering the traffic and effectiveness of data communication, the weight order is firstly determined, that is, the priority of each low-orbit satellite communication service resource usage in the communication task is determined. The resource planning unit takes six third-level indicators (n=6 in this embodiment) as the evaluation of a communication task, and then calculates the normalized weight value of each satellite communication service:
[0089]
[0090] wherein n represents the number of third-level indicators, n=6; j represents the jth third-level indicator; i represents the ith low-orbit satellite; a ij represents the attribute value of the jth third-level indicator in the communication quality weight of the ith low-orbit satellite; represents the weight value of the jth third-level indicator of the ith low-orbit satellite.
[0091] The second-level indicators of the communication service can be weighted and summed to calculate the weight value of the data information transmission effect evaluation:
[0092]
[0093] The weight value of the user service unit evaluation is calculated:
[0094]
[0095] In this embodiment, the second-level indicator low-orbit satellite evaluation M has no practical significance, because the corresponding third-level indicators low-orbit satellite level l and low-orbit satellite service type s are usually set in advance or have been artificially evaluated parameters, so the normalization processing can be omitted.
[0096] The synthetic weight of each layer indicator for the battlefield environment guarantee effect is calculated, that is, the comprehensive priority order of the low-orbit satellite i in the communication task is obtained, and the final evaluation indicator priority is obtained, that is, the expression of the sorting vector of the low-orbit satellite i is calculated:
[0097]
[0098] wherein, represents the weight value of the data information transmission effect evaluation of the ith low-orbit satellite; represents the user service unit evaluation weight value of the ith low-orbit satellite; represents the influence degree of the ith low-orbit satellite, represents the user center priority of the ith low-orbit satellite, represents the service type of the ith low-orbit satellite, represents the low-orbit satellite level, represents the data size of the ith low-orbit satellite, Data transmission rate of the i-th low-orbit satellite.
[0099] The resource planning unit selects a low-orbit satellite satisfying the communication quality requirement to replace a low-orbit satellite not satisfying the communication quality requirement to provide communication service, and ranks the low-orbit satellites satisfying the communication quality requirement according to the comprehensive priority.
[0100] The instruction generating unit generates instructions according to the service ranking of the low-orbit satellites, the instructions including low-orbit satellite identification, low-orbit satellite spatial coordinates, service target identification, service target spatial coordinates, and service requirements.
[0101] The link planning unit forms a phased array antenna data transmission link pointing according to the low-orbit satellite identification and the low-orbit satellite spatial coordinates, generates an instruction beam adjustment code, and carries the instruction beam adjustment code in the instructions generated by the instruction generating unit.
[0102] The protocol conversion unit converts the instructions according to the communication protocol of the low-orbit satellites and sends them to the high-orbit phased array antenna control system.
[0103] Step 4: The high-orbit phased array antenna control system sends the instructions to the data earth station, which in turn sends the instructions to the high-orbit satellite phased array antenna; the high-orbit satellite phased array antenna analyzes the instruction beam adjustment code and transmits the instructions to the low-orbit satellites not satisfying the quality requirement and the low-orbit satellites satisfying the quality requirement respectively, so that the low-orbit satellites satisfying the quality requirement replace the low-orbit satellites not satisfying the quality requirement to provide communication service.
[0104] Suppose that the low-orbit satellite A needs to recover service resources after receiving the instructions, and the low-orbit satellite B provides communication service according to the instructions after receiving the instructions. Accordingly, the complete data communication service resource scheduling is completed, and the low-orbit satellites A and B are not aware of the scheme, and all data processing and resource scheduling are completed in the high-orbit phased array antenna control system and the resource scheduling processing system on the ground.
[0105] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A low-orbit satellite communication resource scheduling system based on phased array antenna, used for scheduling communication resources of low-orbit satellites through high-orbit satellite phased array antennas, characterized in that: include: The data earth station is used to transmit communication data between the high-orbit satellite phased array antenna and the high-orbit phased array antenna control system, wherein the communication data is the communication data of the low-orbit satellite. The high-orbit phased array antenna control system is used to determine the communication quality of the low-orbit satellite based on the communication data transmitted by the high-orbit satellite phased array antenna. The resource scheduling and processing system is used to select low-orbit satellites that meet the communication quality requirements to replace low-orbit satellites that do not meet the communication quality requirements for communication services, based on the communication quality of low-orbit satellites obtained from the high-orbit phased array antenna control system. The resource scheduling and processing system includes a resource planning unit, which is used to perform resource adjustment calculations based on communication tasks, select low-orbit satellites that meet communication quality requirements to replace low-orbit satellites that do not meet communication quality requirements for communication services, and sort the low-orbit satellites that meet communication quality requirements for service. The resource scheduling and processing system also includes an instruction generation unit, a link planning unit, and a protocol conversion unit; The instruction generation unit is used to generate instructions based on the service order of low-Earth orbit satellites. The instructions include low-Earth orbit satellite identifier, low-Earth orbit satellite spatial coordinates, service target identifier, service target spatial coordinates, and service requirements. The link planning unit is used to form the data transmission link direction of the phased array antenna based on the low-orbit satellite identifier and the low-orbit satellite spatial coordinates, generate the command beam adjustment code, and carry the command beam adjustment code in the command generated by the command generation unit. The protocol conversion unit is used to convert the instructions according to the communication protocol of the low-orbit satellite and then send them to the high-orbit phased array antenna control system. The hierarchical dynamic secondary indicators constructed in the resource planning unit include low-Earth orbit satellite evaluation (M), data information transmission effect evaluation (T), and user service unit evaluation (C). Among them, the tertiary indicators of low-Earth orbit satellite evaluation (M) include low-Earth orbit satellite level (l) and low-Earth orbit satellite service type (s); the tertiary indicators of data information transmission effect evaluation (T) include data transmission rate (v) and data volume (c); and the tertiary indicators of user service unit evaluation (C) include impact degree (f) and user center priority (p). The resource planning unit performs resource adjustment calculations based on the communication task, and calculates the normalized weight values of six tertiary indicators: wherein n represents the number of the third-level indexes, n=6; j represents the jth third-level index; i represents the ith low earth orbit satellite; a ij represents the attribute value of the jth third-level index in the communication quality weight of the ith low earth orbit satellite; represents the weight value of the jth third-level index of the ith low earth orbit satellite; Calculate the sorting vector expression for low-Earth orbit satellite i: wherein, represents a weight value of data information transmission effect evaluation of the i-th low earth orbit satellite; represents a user service unit evaluation weight value of the i-th low earth orbit satellite; i represents an influence degree of the i-th low earth orbit satellite, i represents a user center priority of the i-th low earth orbit satellite, i represents a service type of the i-th low earth orbit satellite, l represents a low earth orbit satellite level, i represents a data volume size of the i-th low earth orbit satellite, i represents a data transmission rate of the i-th low earth orbit satellite.
2. The phased array antenna based low earth orbit satellite communication resource scheduling system of claim 1, wherein: The high-orbit phased array antenna control system includes a data return control unit, which includes a return data parser and a return data target protocol converter. The return data parser is used to parse the communication data of the low-Earth orbit satellite transmitted by the data earth station. After parsing, the communication data includes the low-Earth orbit communication satellite identifier, current spatial coordinates, service target, number of service targets, service duration, service quality, and time code. The parser analyzes the communication data and compares the relevant parameters of service quality with the service quality parameters when constructing the communication task of the low-Earth orbit satellite to see if they are within the threshold range. If they are within the threshold range, the communication quality of the low-Earth orbit satellite is determined to meet the requirements; otherwise, the communication quality is determined to not meet the requirements. The return data target protocol converter is used to send the parsed communication data and communication quality judgment results to the resource scheduling processing system. 3.The low earth orbit satellite communication resource scheduling system based on phased array antenna of claim 2, wherein: The high-orbit phased array antenna control system further comprises a data forward control unit, the data forward control unit comprising a forward data adaptive encoder, a forward data queue manager, and a forward data resource controller; The forward data adaptive encoder is configured to encode a plurality of instructions generated by the resource scheduling processing system; The forward data queue manager is configured to queue sort the plurality of instructions according to the encoding; The forward data resource controller is configured to sequentially send the instructions to the data earth station according to the queue sort of the plurality of instructions.
4. The phased array antenna based LEO satellite communication resource scheduling system of claim 3, wherein: After receiving the instructions sent by the data earth station, the high-orbit satellite phased array antenna analyzes the instruction beam adjustment code therein and transmits the instructions to the low-orbit satellites that do not meet the quality requirements and the low-orbit satellites that meet the quality requirements, respectively, so that the low-orbit satellites that meet the quality requirements take over the low-orbit satellites that do not meet the quality requirements to provide communication services.
5. The method of resource scheduling for LEO satellite communication based on phased array antenna, applied to the system of any one of claims 1-4, characterized in that: The method comprises the following steps: Step 1: The high-orbit satellite phased array antenna acquires communication data of the low-orbit satellites and sends the communication data to the data earth station, and the data earth station sends the communication data to the high-orbit phased array antenna control system; Step 2: The high-orbit phased array antenna control system analyzes and analyzes the communication data of the low-orbit satellites to determine whether the communication quality of the low-orbit satellites meets the communication quality requirements; Step 3: The resource scheduling processing system selects the low-orbit satellites that meet the communication quality requirements to take over the low-orbit satellites that do not meet the communication quality requirements to provide communication services according to the communication quality of the low-orbit satellites obtained by the high-orbit phased array antenna control system. 6.The method of claim 5, wherein: Step 2 specifically comprises the following steps: Step 2-1: The data return control unit analyzes the communication data of the low-orbit satellites transmitted by the data earth station, and the analyzed communication data comprises a low-orbit communication satellite identifier, a current spatial coordinate, a service target, a service target quantity, a service time length, a service quality, and a time code; Step 2-2: The data return control unit analyzes the communication data and compares whether the related parameters of the service quality and the related parameters of the service quality when the communication task of the low-orbit satellite is constructed are within a threshold range, if yes, it is determined that the communication quality of the low-orbit satellite meets the requirements, otherwise, it is determined that the communication quality does not meet the requirements; Step 2-3: The data return control unit sends the analyzed communication data and the determination result of whether the communication quality meets the requirements to the resource scheduling processing system.
7. The method of claim 6, wherein the method further comprises: Step 4: The high-orbit phased array antenna control system sends instructions to the data earth station, and the data earth station sends the instructions to the high-orbit satellite phased array antenna; the high-orbit satellite phased array antenna analyzes the instruction beam adjustment code therein and transmits the instructions to the low-orbit satellites that do not meet the quality requirements and the low-orbit satellites that meet the quality requirements, respectively, so that the low-orbit satellites that meet the quality requirements take over the low-orbit satellites that do not meet the quality requirements to provide communication services.
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