A station network resource allocation method based on large-scale constellation

Abstract

The application discloses a station network resource allocation method based on a large-scale constellation and belongs to the field of satellite communication. The application analyzes various tasks, pre-allocates station network resources according to the current state of each satellite, and allocates the number of arc segments and the preferred station network resources of each satellite that can meet the task requirements of the satellite when considering the influence period of the atmospheric transmission effect of each station-satellite link, so as to realize the resource allocation of multiple types of tasks, multiple satellites and multiple stations. The application realizes large-scale and efficient satellite-ground resource scheduling, improves the resource utilization rate, avoids resource waste, and has the characteristics of high resource utilization rate, intelligent scheme, easy expansion, wide adaptation range and the like.

Description

Technical Field

[0001] This invention relates to a method for allocating station network resources based on a large-scale constellation, belonging to the field of satellite communication technology, and is particularly applicable to the problem of allocating satellite-ground resources for large-scale constellations. Background Technology

[0002] Low-Earth orbit (LEO) internet constellations are massive in scale, with numerous satellites, a wide range of application scenarios, diverse service types, and varied resource types. Due to the massive amount of complex and differentiated services involved, various dynamic constraints, and the high time-varying nature of network link resources, the allocation of space and ground resources faces significant challenges and tests.

[0003] Traditional station network resource allocation strategies only consider satellite visibility forecasts and the status information of each station network device. They mainly allocate arc windows to each mission based on the periodic resource requests of each satellite, the normal or faulty status of station network devices, and satellite visibility forecast results, which lacks dynamic adaptability.

[0004] Traditional website resource allocation, because it does not grasp the specific tasks when processing resource requests, may result in the allocated resources not being well matched with the tasks, and many tasks may not be able to meet the resource needs, leading to resource waste due to unreasonable allocation of website resources. Summary of the Invention

[0005] The technical problem this invention aims to solve is to avoid the problems of insufficient utilization of station network resources and insufficient dynamic adaptability of resource allocation caused by unreasonable resource allocation in the aforementioned background technology, and to provide a station network resource allocation method based on a large-scale constellation. This invention features high resource utilization, good practicality, intelligent solution, easy expansion, and wide applicability.

[0006] The technical problem to be solved by this invention is achieved by the following technical solution:

[0007] A method for allocating station network resources based on a large-scale constellation includes the following steps:

[0008] (1) Based on the real-time location of large-scale constellation satellites and the site information of station network equipment, calculate the geometric visible arc window information of the star station to obtain the reference station network resource pool;

[0009] (2) Obtain the network status of all available satellites in the constellation and divide the available satellites into off-network satellites and network satellites;

[0010] (3) Configure the usage strategy of the network satellite and the off-network satellite for the station network equipment, allocate the ground station network equipment to available satellites, and obtain the pre-processed station network resource pool;

[0011] (4) Obtain the network shutdown status information of station network equipment and parse the unavailable time period information of each station network equipment;

[0012] (5) Based on the real-time location of large-scale constellation satellites, the site of station network equipment, and real-time meteorological data, calculate the time period affected by the atmospheric transmission effect of the satellite-to-ground link and obtain the set of time periods when the meteorological link between the satellite and the station is interrupted.

[0013] (6) Remove the equipment unavailability period and the satellite meteorological link interruption period from the preprocessed station network resource pool to obtain the station network resource allocation result.

[0014] Furthermore, the specific method of step (3) is as follows:

[0015] (301) Select the off-network satellite to be configured and set the time interval of the selected off-network satellite;

[0016] (302) Configure the usage policy of the selected off-network star for the station network equipment in its time interval. For an off-network star that is not assigned to use a certain station network equipment, it cannot use any arc of the station network equipment. The network star can use all station network equipment by default. However, when a certain station network equipment is used by an off-network star, the network star cannot use the station network equipment in the time interval of that off-network star.

[0017] (303) Based on the reference station network resource pool, obtain the set of station forecast arc segments for each station network device;

[0018] (304) The set of forecast arc segments for each station network device is processed as follows:

[0019] If the start or end time of the off-network satellite time interval allocated to use the station network equipment is located within a certain arc segment of the station network equipment, then the arc segment is discarded from the station prediction arc segment set of the station network equipment.

[0020] If the start or end time of the time interval of the satellite using the network equipment is located within a certain arc segment of the network equipment, then the arc segment is discarded from the set of station prediction arc segments of the network equipment.

[0021] (305) After all the station forecast arc sets of all station network equipment are processed, the preprocessed station network resource pool is obtained.

[0022] Furthermore, the specific method of step (5) is as follows:

[0023] (501) Obtain real-time location information of large-scale constellation satellites and site information of station network equipment;

[0024] (502) Obtain real-time meteorological data and analyze and process the meteorological data;

[0025] (503) Based on the analyzed meteorological data, make radio meteorological data forecasts, including forecasts of rainfall, rainfall rate, rain top height, atmospheric temperature, atmospheric humidity, pressure, wind speed and wind direction;

[0026] (504) Calculate the attenuation value of the satellite-to-ground link based on the radio meteorological data predicted in step (503);

[0027] (505) Based on the attenuation value of the satellite-to-ground link calculated in step (504) and the real-time satellite position and station network equipment site information obtained in step (501), satellite performance is evaluated, and the set of satellite-to-station meteorological link interruption periods is calculated for different thresholds of satellite performance parameters.

[0028] Furthermore, the specific method of step (6) is as follows:

[0029] (601) Based on the unavailable time period information of the device parsed in step (4), match the arc information of the preprocessed station network resource pool; for a station network device, if the available arc is located between the start time and end time of the unavailable arc, discard the available arc.

[0030] (602) Based on the set of interrupted meteorological links of the satellite station obtained in step (5), match the arc information of the preprocessed station network resource pool; for a station network device, if the available arc is located between the start and end time of an interrupted period in the set of interrupted meteorological links of the satellite station, discard the available arc.

[0031] (603) After all the station network equipment has been processed, the station network resource allocation result is obtained.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] 1. This invention analyzes and sorts out various tasks, and pre-allocates station network resources in advance according to the current status of each satellite (networked or offline). It also considers the atmospheric transmission effect of each station's satellite-to-ground link during the period of time, and allocates the number of arc segments and the station network resources that can meet the needs of each satellite's mission and the preferred use of the satellite network resources. This enables resource allocation for multiple types of tasks, multiple satellites, and multiple stations, achieves large-scale and efficient satellite-to-ground resource scheduling, improves resource utilization, and avoids resource waste.

[0034] 2. This invention takes into account the influence of atmospheric transmission effects of satellite-to-ground links. By calculating the set of time periods when the meteorological links of satellite stations are interrupted, the calculated resources have high accuracy and good engineering applicability.

[0035] 3. Based on the satellite's on-network status, this invention dynamically and flexibly configures the usage strategies of networked satellites, off-network satellites, and station network equipment, resulting in high resource utilization and good practicality.

[0036] 4. This invention is characterized by its ease of expansion and wide applicability. Attached Figure Description

[0037] Figure 1 This is a flowchart of a site network resource allocation method based on a large-scale constellation.

[0038] Figure 2 This is a schematic diagram of the generation of the preprocessed station network resource pool.

[0039] Figure 3 Flowchart for calculating the period of interruption of meteorological link between satellite stations.

[0040] Figure 4 A schematic diagram illustrating the calculation of the station network resource allocation results. Detailed Implementation

[0041] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0042] like Figure 1 As shown, a method for allocating station network resources based on a large-scale constellation includes the following steps:

[0043] (1) Based on the real-time location of large-scale constellation satellites and the site information of station network equipment, calculate the geometric visible arc window information of the satellite station, construct the station forecast set, and obtain the reference station network resource pool.

[0044] (2) Obtain the on-network status of available satellites in the constellation, and divide the satellites into an off-network set and an on-network set according to their on-network status (off-network, networked).

[0045] (3) Based on the satellite's on-network status, dynamically and flexibly configure the satellites in the network satellite and off-network satellite sets, and the usage strategies of each station network equipment. Allocate the ground station network equipment in each region to the available satellites in the constellation according to the network satellites and off-network satellites, generate a station network resource pre-allocation strategy, and obtain a pre-processed station network resource pool.

[0046] (4) Obtain the network shutdown status information of the station network equipment and parse the unavailable time period information of each equipment.

[0047] (5) Based on the real-time location of large-scale constellation satellites, the site of station network equipment, and real-time meteorological data, calculate the time period affected by the atmospheric transmission effect of the satellite-to-ground link and obtain the set of time periods when the meteorological link between the satellite and the station is interrupted.

[0048] (6) Remove the equipment unavailable period in step (4) and the satellite meteorological link interruption period in step (5) from the preprocessed station network resource pool in step (3) to obtain the station network resource allocation result, which supports the planning and design of large-scale constellation missions.

[0049] In step (3), based on the satellite's on-network status, the satellites in the network and off-network sets are dynamically and flexibly configured, along with the usage strategies of each station network device. The ground station network devices are allocated to available satellites in the constellation according to the network and off-network status, generating a station network resource pre-allocation strategy and obtaining a pre-processed station network resource pool. Specifically, such as... Figure 2 As shown, the preprocessed network resource pool generation diagram includes the following steps:

[0050] (301) Assume that all available satellites in the constellation are satellites 001, 002, 003, 004, and 005. Set the usage strategy for the satellites in the off-network constellation and the station network equipment, that is, use the mapping relationship, and the satellites in the constellation are available to all station network equipment by default.

[0051] (302) Set the start time of the time interval configured for satellite 001 to t. s1 The end time is t e1 The time interval configured for satellite 002 starts at time t. s2 The end time is t e2 Then the complete set of configured time intervals is the union of the time intervals configured by Star 001 and Star 002, which is the start time t of the configured pre-allocation strategy. s End time t e .

[0052] (303) Taking the baseline station network resource pool, i.e., the station forecast set, as the baseline, and taking the device with the device identifier XX-XA-LEOG-ACS-01 in the station network as an example, let the set of station forecast arc segments for this device be T, and each arc segment be T. i , where i = 1, 2, 3...

[0053] (304) For off-network satellites that have been assigned a usage strategy, such as satellites 001 and 002, match the corresponding arc segments according to the time interval configured in (302). If the configured time interval starts at time t... s1 Or end time t e1 It happens to be within a certain arc segment, such as t z To ensure the availability of arc segments, the arc segments are discarded. Therefore, for device XX-XA-LEOG-ACS-01, the available arc segments for off-net stars 001 and 002 are t1, t2, and t3.

[0054] (305) For off-net stars that have not been assigned a usage policy, such as off-net star 004, the arc window of device XX-XA-LEOG-ACS-01 cannot be used.

[0055] (306) For network satellites, such as satellites 003 and 005, then within the time interval of the satellites leaving the network under the assigned strategy, i.e., t s To te Device XX-XA-LEOG-ACS-01 cannot be used during the specified time interval; it can be used at other times. Similarly, to ensure the availability of arc segments, such as t... z arc segment, t s and t e Since the segment falls within this arc, it is discarded. Therefore, for device XX-XA-LEOG-ACS-01, the available arcs for network stars 003 and 005 are t4, t5, t6, t7, and t8.

[0056] (307) Therefore, for device XX-XA-LEOG-ACS-01 and all available satellites in the constellation, all available arc segments are t1, t2, t3, t4, t5, t6, t7, t8.

[0057] (308) For other devices in the station network equipment, the steps for generating the preprocessed station network resource pool are the same as steps (303) to (307). Once all devices in the station network equipment are configured, the preprocessed station network resource pool can be obtained.

[0058] Step (5) Based on the real-time positions of large-scale constellation satellites, the locations of station network equipment, and real-time meteorological data, calculate the time periods affected by the atmospheric transmission effect of the satellite-to-ground link, and obtain the set of time periods when the meteorological link between the satellite and the station is interrupted. Specifically, such as... Figure 3 The flowchart shown below illustrates the calculation process for the period of interruption in the meteorological link between satellite stations, including the following steps:

[0059] (501) Obtain real-time location information of large-scale constellation satellites and site information of station network equipment.

[0060] (502) Obtain real-time meteorological data and analyze and process the meteorological data.

[0061] (503) Based on the analyzed meteorological data, radio meteorological data forecasts are made, such as forecasts of parameters such as rainfall, rainfall rate, rain top height, atmospheric temperature, atmospheric humidity, pressure, wind speed, and wind direction.

[0062] (504) Calculate the attenuation value of the satellite-to-ground link based on the radio meteorological data predicted in step (503).

[0063] (505) Based on the attenuation value of the satellite-to-ground link calculated in step (504) and the real-time satellite position and station network equipment site information obtained in step (501), satellite performance is evaluated, and the set of satellite-to-station meteorological link interruption periods is calculated for different thresholds of satellite performance parameters.

[0064] Step (6) removes the equipment unavailability period from step (4) and the satellite meteorological link interruption period from step (5) from the preprocessed station network resource pool of step (3) to obtain the station network resource allocation result. Specifically, as follows: Figure 4 The diagram shown illustrates the calculation of network resource allocation results, including the following steps:

[0065] (601) Based on the unavailability time period information of the device parsed in step (4), match the arc segment information of the preprocessed station network resource pool. For device XX-XA-LEOG-ACS-01, assume the start time of the unavailability arc is t. us The end time is t ue The usable arc segments t2 and t3 are exactly within the unusable arc segment t. us and t ue Therefore, the usable arc segments t2 and t3 are discarded.

[0066] (602) Based on the set of interruption periods of the meteorological link at the satellite station calculated in step (5), match the arc information of the preprocessed station network resource pool. For device XX-XA-LEOG-ACS-01, assume that the set of interruption periods contains one interruption period, and the start time of this interruption period is t. qs The end time is t qe The available arc segment t1 happens to be during the interruption period t. qs and t qe Therefore, the usable arc segment t1 is discarded.

[0067] (603) Therefore, for device XX-XA-LEOG-ACS-01 and all available satellites in the constellation, all available arc segments are t4, t5, t6, t7, and t8.

[0068] (604) For other devices in the station network equipment, the station network resource processing process is the same as steps (601) to (603). Once all devices in the station network equipment have been processed, the station network resource allocation result can be obtained.

[0069] In summary, to address the problem of resource waste caused by unreasonable allocation of network resources in traditional satellite network resource allocation methods that only consider satellite network visibility forecasts and the status information of each network device, thus allocating arc windows to each task, a new method for large-scale constellation network resource allocation is designed. This method analyzes various tasks and pre-allocates network resources based on the current status of each satellite (networked or offline). It also considers the atmospheric transmission effects of the satellite-to-ground links during certain periods, allocating the required number of arc windows and network resources according to the satellite's mission requirements and usage preferences to each satellite, achieving resource allocation for multiple types of tasks, multiple satellites, and multiple stations. This invention achieves large-scale, efficient satellite-to-ground resource scheduling, improves resource utilization, avoids resource waste, and features high resource utilization, intelligent solutions, easy expansion, and wide adaptability.

Claims

1. A method for allocating station network resources based on a large-scale constellation, characterized in that, Includes the following steps: (1) Based on the real-time location of large-scale constellation satellites and the site information of station network equipment, calculate the geometric visible arc window information of the satellite station to obtain the reference station network resource pool; (2) Obtain the network status of all available satellites in the constellation and divide the available satellites into off-network satellites and network satellites; (3) Configure the usage strategy of the network satellites and off-network satellites for the ground station network equipment, allocate the ground station network equipment to available satellites, and obtain the pre-processed station network resource pool; the specific method is as follows: (301) Select the off-network satellite to be configured and set the time interval of the selected off-network satellite; (302) Configure the usage strategy of the selected off-network satellite for the station network equipment in its time interval. For an off-network satellite that is not assigned to use a certain station network equipment, it cannot use any arc segment of the station network equipment. By default, the network star can use all station network devices. However, when a station network device is used by an off-network star, the network star cannot use that station network device during the off-network star's time interval. (303) Based on the reference station network resource pool, obtain the set of station forecast arc segments for each station network device; (304) The forecast arc set of each station network device is processed as follows: If the start or end time of the off-network satellite time interval allocated to use the station network equipment is located within a certain arc segment of the station network equipment, then the arc segment is discarded from the station prediction arc segment set of the station network equipment. If the start or end time of the time interval of the satellite using the network equipment is located within a certain arc segment of the network equipment, then the arc segment is discarded from the set of station prediction arc segments of the network equipment. (305) After all the station forecast arc sets of all station network equipment have been processed, the preprocessed station network resource pool is obtained; (4) Obtain the network shutdown status information of the station network equipment and parse the unavailable time period information of each station network equipment; (5) Based on the real-time location of large-scale constellation satellites, the site of station network equipment, and real-time meteorological data, calculate the time period affected by the atmospheric transmission effect of the satellite-to-ground link, and obtain the set of time periods when the meteorological link between the satellite and the station is interrupted; The specific method is as follows: (501) Obtain real-time location information of large-scale constellation satellites and site information of station network equipment; (502) Obtain real-time meteorological data and analyze and process the meteorological data; (503) Based on the analyzed meteorological data, make radio meteorological data forecasts, including forecasts of rainfall, rainfall rate, rain top height, atmospheric temperature, atmospheric humidity, pressure, wind speed and wind direction; (504) Calculate the attenuation value of the satellite-to-ground link based on the radio meteorological data predicted in step (503); (505) Based on the attenuation value of the satellite-to-ground link calculated in step (504) and the real-time satellite position and station network equipment site information obtained in step (501), satellite performance is evaluated, and the set of satellite-to-station meteorological link interruption periods is calculated for different thresholds of satellite performance parameters. (6) Remove the equipment unavailability period and the satellite meteorological link interruption period from the preprocessed station network resource pool to obtain the station network resource allocation result.

2. The method for allocating station network resources based on a large-scale constellation according to claim 1, characterized in that, The specific method for step (6) is as follows: (601) Based on the unavailable time period information of the device parsed in step (4), match the arc information of the preprocessed station network resource pool; for a station network device, if the available arc is located between the start time and end time of the unavailable arc, discard the available arc. (602) Based on the set of meteorological link interruption periods of the star station obtained in step (5), match the arc information of the preprocessed station network resource pool; For a station network device, if the available arc segment is located between the start and end times of an interruption period in the set of interruption periods of the satellite meteorological link, then the available arc segment is discarded. (603) After all the station network equipment has been processed, the station network resource allocation result is obtained.

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