Link self-organization method for base data transmission equipment of satellite-ground random access station

Abstract

The invention provides a satellite-ground random access station base data transmission device link self-organization method, and belongs to the technical field of space information transmission and spacecraft measurement and control. The method is applied to high-speed data transmission tasks of low-orbit constellations and star groups, new task requirements can be effectively met, and the use efficiency and the automation level of data transmission link resources can be greatly improved. Meanwhile, the equipment, layout and external information interface state of an existing ground measurement and control data transmission station are not changed, control channel infrastructures accessed in a spaceflight measurement and control random mode can be fully utilized, and the method has good engineering feasibility and economic benefits.

Description

Technical Field

[0001] The present invention belongs to the technical field of space information transmission and spacecraft TT&C technology, and particularly relates to a method for self-organizing the link of a base data transmission device of a space-earth opportunistic access station. Background Art

[0002] For the TT&C management requirements of large low-earth orbit constellations, the space TT&C ground station network adopts a method for establishing an opportunistic access TT&C link. That is, similar to a mobile communication base station, a dedicated ground access device is used to form a full-time and full-domain radio signal coverage. As long as a spacecraft enters the signal coverage range of the device, it can directly perform signaling interaction with the ground access device, complete access handshake and status coordination, and the access device allocates a directional TT&C service beam to guide the establishment of a tracking TT&C link.

[0003] In addition to implementing the TT&C management of large low-earth orbit constellations, the space TT&C ground station network also needs to provide support for high-speed space-earth data transmission. Currently, the reception of high-speed data transmission data is jointly completed by many independent data transmission receiving devices of the ground TT&C data transmission stations under the unified control of the center: the planning and allocation of high-speed data transmission link resources, the establishment of data transmission links, etc. The TT&C station network center needs to coordinate and configure the states according to the specific configuration of the data transmission devices of the ground TT&C data transmission stations, and then real-time control each data transmission device to establish a high-speed data transmission link when the satellite is visible. This centralized operation method has many coordination nodes, complex relationships, and a long process, and cannot meet the requirements of a large number of parallel high-speed data transmission tasks and fast task response requirements for low-earth orbit constellations and satellite swarms. There is an urgent need for a new method for overall utilization of data transmission link resources. Summary of the Invention

[0004] To solve the above technical problems, the present invention proposes a self-organizing scheme for the link of a base data transmission device of a space-earth opportunistic access station. This scheme realizes the autonomous scheduling of in-station link resources, the self-organizing establishment of the space-earth data transmission link, and the autonomous transmission of high-speed data transmission data through direct signaling interaction and the execution of preset and evolvable rules between the spacecraft and various ground-based devices of the ground TT&C data transmission station.

[0005] The first aspect of the present invention proposes a method for self-organizing the link of a base data transmission device of a space-earth opportunistic access station. The method is used to realize the autonomous scheduling of high-speed data transmission link resources in the ground TT&C data transmission station, the self-organizing establishment of the space-earth data transmission link, and the autonomous transmission of high-speed data transmission data. The method includes:

[0006] Step S1, configure a data transmission link autonomous management device in the ground TT&C data transmission station;

[0007] Among them, the data transmission link autonomous management device is used to achieve: aggregating the link resources of high-speed data transmission devices in the station and specifying lightweight tasks; aggregating the labels and orbital information of target satellites that require high-speed data transmission services; performing full-airspace signaling interaction with the target satellites; generating device task instructions according to the signaling; and determining the high-speed data transmission data user address according to the target satellite label information.

[0008] Among them, the full-airspace signaling interaction is implemented through a control channel with full-time and full-airspace coverage formed by the ground in the forward and reverse directions, and is the same as the random access of spaceflight measurement and control. The forward is a continuously broadcasted broadcast signal, and the reverse is an ALOHA channel for receiving burst short messages of different target satellites.

[0009] Among them, the data transmission link autonomous management device is connected to each high-speed data transmission device, the station network center, the mission center, and the user center of the data transmission device in the station through information interfaces.

[0010] Step S2: Configure a signaling interaction device and a data transmission service autonomous interaction software on the target satellite that requires high-speed data transmission services, and work together with the original on-board high-speed data transmission device on the target satellite.

[0011] Among them, the signaling interaction device is used to establish a control channel with ground devices, and the data transmission service autonomous interaction software is used to achieve: querying the current data transmission data storage area and data transmission task queue; receiving and responding to real-time data transmission task instructions; performing signaling interaction with the data transmission link autonomous management device in the ground measurement and control data transmission station; calculating the arc segment passing through the ground measurement and control data transmission station according to the ground measurement and control data transmission station address and the satellite orbit; and pushing the signaling interaction result to the on-board high-speed data transmission device.

[0012] In the method, the data transmission link autonomous management device and the on-board data transmission service autonomous interaction software are automatically executed under pre-set rules; the rules are jointly specified and managed by the station network center and the mission center, including resource application rules, resource allocation rules, and signaling interaction protocols, and the rules determine the application effect of high-speed data transmission; driven by the rules, the data transmission link autonomous management device and the on-board data transmission service autonomous interaction software are combined with the in-station data transmission receiving device, the on-board high-speed data transmission device, the station network center, and the mission center through the control channel of space-ground signaling interaction to achieve the self-organization and automation of data transmission tasks.

[0013] According to the method of the first aspect of the present invention, the data transmission link autonomous management device and the on-board data transmission service autonomous interaction software are combined with the in-station data transmission receiving device, the on-board high-speed data transmission device, the station network center, and the mission center through the control channel of space-ground signaling interaction to achieve the self-organization and automation of data transmission tasks; specifically including:

[0014] The network center and the mission center specify rules through mutual agreement. The network center configures the rules in the data transmission link autonomous management device, and the mission center uploads them to the on-board data transmission service autonomous interaction software through the space-ground link;

[0015] The data transmission link autonomous management device collects the link resource information of the in-station data transmission receiving devices and manages the data transmission link resources by dividing them into an online queue, a standby queue, a reserved queue, and an offline queue;

[0016] The network center and the mission center push the label number, user center address, orbital information, and data transmission rate of the target satellite that requires high-speed data transmission services to the data transmission link autonomous management device, and the data transmission link autonomous management device performs storage management and updates;

[0017] The data transmission link autonomous management device normally enables a control channel with full-time and full-airspace coverage;

[0018] The data transmission link autonomous management device calculates the next arc segment of the target satellite that requires high-speed data transmission services according to the satellite orbital information, arranges the target satellites in the order of inbound time to form a time queue Time_Q. At the same time, it extracts link resources from the standby queue, sends lightweight task instructions to the relevant in-station data transmission receiving devices, configures the status, and sequentially points the data transmission receiving beam to the inbound position of the target satellite according to the order of the Time_Q queue;

[0019] After the signaling interaction device of the target satellite enters the visible range of the ground TT&C data transmission station, it authenticates the forward signal of the received control channel. After the authentication is passed, it sends an access request signaling to the ground TT&C data transmission station. After the data transmission link autonomous management device receives the request signaling and the authentication is passed, it sends a data transmission inquiry signaling to inquire whether the target satellite needs data transmission services;

[0020] After receiving the signaling, the on-board data transmission service autonomous interaction software queries the status of the on-board high-speed data transmission storage area and the data transmission task queue, and sends a reply signaling; the reply signaling includes two states: yes and no. Among them, if the reply is yes, the data transmission start time of the data transmission service is attached;

[0021] The data transmission link autonomous management device receives the reply signaling. If the reply signaling is yes, it queries the data transmission start time, and through task instructions, makes the data transmission link resources that have been pointed to the target satellite receive the data transmission data transmitted by the high-speed data transmission device of the target satellite from the data transmission start time, and at the same time adjusts the resources to the online queue; if the reply signaling is no, it puts the data transmission resources that have been pointed to the target satellite and are waiting back to the end of the standby queue to wait for re-allocation of the pointing;

[0022] During the period when the on - satellite data transmission service autonomous interaction software passes by the ground TT&C data transmission station, it continuously waits to receive the real - time data transmission task instruction of the target satellite platform. After receiving the instruction and still within the coverage range of the control channel, it sends a data transmission application signaling; the data transmission link autonomous management device receives the application signaling, queries the available resource situation in the reserved queue, and sends a response signaling; the response signaling includes two states: yes and no. If the response is yes, the data transmission start time of the data transmission service is appended.

[0023] The on - satellite data transmission service autonomous interaction software of the target satellite receives the response signaling. If the response signaling is yes, it queries the data transmission start time and drives the high - speed data transmission device of the target satellite to transmit data from the data transmission start time; if the response signaling is no, it abandons the data transmission task application for this arc segment and simultaneously reports the coordination result of the real - time data transmission task to the satellite platform.

[0024] The data transmission link autonomous management device sends the matching situation of the received data transmission data and the user center address to the data reception device according to the matching situation between the data transmission link resources and the services of the target satellite, and the data reception device transmits the data transmission data to the user center in real - time.

[0025] The data transmission link autonomous management device performs real - time and dynamic management based on rules on the four queues of the data transmission link resources; among them, the standby queue has the highest priority; the reserved queue and the offline queue are combined; when the real - time data transmission tasks are intensive, the resources of the reserved queue are preferentially arranged.

[0026] According to the method of the first aspect of the present invention, the data transmission link autonomous management device is connected to all data reception devices in the ground TT&C data transmission station, and is simultaneously connected to the station network center and the mission center, for realizing the management of the resources of this station, link control, and information interaction; the data transmission service autonomous interaction software of the target satellite is connected to the original on - satellite high - speed data transmission device and the signaling interaction device, and autonomously manages the data transmission link through signaling.

[0027] According to the method of the first aspect of the present invention, it is based on the space - to - ground signaling and the fast interaction protocol interacted through the space - to - ground control channel to realize the matching of the ground data transmission link resources and the data transmission requirements between the target satellites and the establishment of the link; the signaling is divided into broadcast signaling, network access application signaling, data transmission inquiry signaling, data transmission application signaling, and response signaling; among them, the broadcast signaling and the network access application signaling are the same as the signaling used in the space TT&C random access; the data transmission inquiry signaling and the data transmission application signaling are respectively paired with the response signaling for different usage scenarios.

[0028] According to the method of the first aspect of the present invention, the usage scenarios include: when each target satellite initially enters the visible range of the ground TT&C data transmission station, the data transmission inquiry signaling and the response signaling are both used, and the interaction is completed by the method of one - time ground inquiry and one - time satellite response; among them:

[0029] Monitor the network access status of the ground surveillance target satellite. When a new target satellite accesses the network, set the label of the newly accessed satellite through broadcast signaling to query it. After receiving the query, the target satellite first checks whether there is data to be transmitted in the high-speed data transmission storage area. When there is data, calculate the data transmission start time by subtracting the preparation delay and waiting delay from the current time. At the same time, query the data transmission task queue, calculate the transit arc segment and compare it with the time in the task queue to determine whether the task is within the transit arc segment. If it is within the arc segment, calculate the data transmission start time by subtracting the preparation delay and waiting delay from the task time. If one of the two conditions is met, send a reply signaling "yes"; if neither is met, send a reply signaling "no".

[0030] According to the method of the first aspect of the present invention, the usage scenarios include: when the target satellite has a burst real-time data transmission task, use the data transmission application signaling and reply signaling, and complete the interaction in the way of one application by the satellite and one reply by the ground; among them:

[0031] During the period when the on-board data transmission service autonomous interaction software passes through the ground TT&C data transmission station, continuously wait to receive the real-time data transmission task instruction of the target satellite platform. When receiving the instruction, calculate the coverage area of the current ground TT&C data transmission station using the pre-injected ground station address and the satellite orbit obtained by query. If it is still within the control channel coverage range, send the data transmission application signaling. After the ground receives the application, query the reserved queue or standby queue resources according to the rules. If there are no resources, reply with signaling "no"; if there are resources, reply with signaling "yes".

[0032] According to the method of the first aspect of the present invention, the self-organization of the in-station data transmission equipment link adopts a rule-based resource management mode; the data transmission link autonomous management device divides all the data transmission link resources in the station into an online queue, a standby queue, a reserved queue, and an offline queue, and adopts different configuration principles and adjustment principles for the resources in different queues under different states; among them:

[0033] Give priority to ensuring the standby queue;

[0034] Adjust the occupied resources into the standby queue;

[0035] Emergency and burst data transmission tasks preferentially use the reserved queue;

[0036] Unless the ground data transmission equipment fails, do not set up an offline queue.

[0037] According to the method of the first aspect of the present invention, the specific configuration of the link state and the routing matching of the ground transmission are both based on the unified management of the required state by the data transmission link autonomous management device; the station network center and the TT&C center synchronize the necessary state information to the data transmission link autonomous management device, so that the process of data transmission resource scheduling, link establishment, and data transmission in the whole station is completely decentralized; the state library includes the following state information:

[0038] Target satellite status data: target label, flight orbit, data transmission link system, data transmission information rate;

[0039] In-station data transmission receiving equipment status data: equipment station address, link support capacity;

[0040] Real-time health status data: health status of the target satellite and ground equipment;

[0041] Execution status data: self-organizing and automated operation log data, execution result data such as the number of data transmissions, time period, data volume, and data quality for each target satellite.

[0042] The second aspect of the present invention proposes a space-ground opportunistic access station-based data transmission equipment link self-organizing system, which is used to realize the autonomous scheduling of high-speed data transmission link resources in the ground TT&C data transmission station, the self-organizing establishment of space-ground data transmission links, and the autonomous transmission of high-speed data transmission data; the system includes:

[0043] A data transmission link autonomous management device configured in the ground TT&C data transmission station;

[0044] Among them, the data transmission link autonomous management device is used to: collect high-speed data transmission equipment link resources in the station and specify lightweight tasks; collect the labels and orbit information of target satellites that require high-speed data transmission services; perform full-airspace signaling interaction with target satellites; generate device task instructions according to the signaling; determine the high-speed data transmission user address according to the target satellite label information;

[0045] Among them, the full-airspace signaling interaction is implemented through a control channel with full-time full-airspace coverage formed on the ground in the forward and reverse directions, and is the same as the opportunistic access of space TT&C. The forward is a continuously broadcasted broadcast signal, and the reverse is an ALOHA channel for receiving burst short messages from different target satellites;

[0046] Among them, the data transmission link autonomous management device is connected to each high-speed data transmission device, the station network center, the mission center, and the user center of the data transmission device in the station through information interfaces;

[0047] A signaling interaction device and a data transmission service autonomous interaction software configured on the target satellite that requires high-speed data transmission services, and the signaling interaction device and the data transmission service autonomous interaction software work together with the original on-board high-speed data transmission device on the target satellite;

[0048] Among them, the signaling interaction device is used to establish a control channel with ground devices. The data transmission service autonomous interaction software is used to implement: querying the current data transmission data storage area and the data transmission task queue; receiving and responding to real-time data transmission task instructions; performing signaling interaction with the data transmission link autonomous management device in the ground TT&C data transmission station; calculating the arc segment of the ground TT&C data transmission station passing through according to the ground TT&C data transmission station address and the satellite orbit; pushing the signaling interaction result to the on-board high-speed data transmission device.

[0049] In the system, the data transmission link autonomous management device and the on-board data transmission service autonomous interaction software are automatically executed under preset rules. The rules are jointly specified and managed by the station network center and the task center, including resource application rules, resource allocation rules, and signaling interaction protocols. The rules determine the application effect of high-speed data transmission. Driven by the rules, the data transmission link autonomous management device and the on-board data transmission service autonomous interaction software, through the control channel of satellite-ground signaling interaction, are combined with the in-station data transmission receiving device, the on-board high-speed data transmission device, the station network center, and the task center to realize the self-organization and automation of data transmission tasks.

[0050] The third aspect of the present invention discloses an electronic device. The electronic device includes a memory and a processor. When the processor executes the computer program stored in the memory, it implements a method for self-organization of the satellite-ground opportunistic access station-based data transmission device link according to the first aspect of the present disclosure.

[0051] The fourth aspect of the present invention discloses a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, it implements a method for self-organization of the satellite-ground opportunistic access station-based data transmission device link according to the first aspect of the present disclosure.

[0052] In summary, the present invention aims at the requirements of low-earth orbit constellations and satellite clusters with a large number of parallel high-speed data transmission tasks and fast task response requirements. It designs a method based on the existing ground TT&C data transmission stations and satellite deployments to achieve autonomous interaction between satellites and stations, autonomous scheduling of in-station data transmission link resources, self-organization of satellite-ground data transmission links to establish links, and autonomous transmission of high-speed data transmission data. It gives the specific composition structures and functions of in-station devices and on-board devices, as well as the method of collaborative self-organization between heaven and earth. The present invention is applied to low-earth orbit constellations and satellite cluster high-speed data transmission tasks, can effectively meet new task requirements, and can greatly improve the utilization efficiency and automation level of data transmission link resources. At the same time, the present invention does not change the equipment, layout, and external information interface status of the existing ground TT&C data transmission stations, and can make full use of the control channel infrastructure of space TT&C opportunistic access, and has good engineering feasibility and economic benefits. Description of the Drawings

[0053] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0054] Figure 1 It is a schematic diagram of the self-organization of the baseband data transmission equipment link of the satellite-ground opportunistic access station according to an embodiment of the present invention. Specific embodiments

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0056] To achieve the autonomous scheduling of high-speed data transmission link resources in the ground TT&C data transmission station, the self-organization establishment of the satellite-ground data transmission link, and the autonomous transmission of high-speed data transmission, the present invention newly sets up a data transmission link autonomous management device in the ground TT&C data transmission station, and this device has the following functions:

[0057] 1. Have the function of aggregating the link resources of high-speed data transmission equipment in the station and specifying lightweight tasks;

[0058] 2. Have the function of aggregating information such as the label and orbit of the target satellite that requires high-speed data transmission services;

[0059] 3. Have the function of full-airspace signaling interaction with the target satellite;

[0060] 4. Have the function of generating device task instructions according to the signaling;

[0061] 5. Have the function of determining the user address of high-speed data transmission according to information such as the label of the target satellite.

[0062] Among them, the full-airspace signaling interaction function is implemented through the control channel that forms full-time full-airspace coverage in the forward and reverse directions on the ground. The specific implementation method is the same as that of space TT&C opportunistic access. The forward is a continuously broadcasted broadcast signal, and the reverse is an ALOHA channel for receiving burst short messages of different target satellites.

[0063] This data transmission link autonomous management device is connected to each high-speed data transmission device, the station network center, the mission center, and the user center of the data transmission device through information interfaces.

[0064] Meanwhile, a new signaling interaction device and an autonomous interaction software for data transmission services are newly installed on the target satellite that requires high-speed data transmission services, and work together with the original on-board high-speed data transmission device. Among them, the newly installed signaling interaction device realizes the establishment of a control channel with ground equipment, and the autonomous interaction software for data transmission services has the following functions:

[0065] 1. It has the function of querying the current data transmission data storage area and the data transmission task queue;

[0066] 2. It has the function of receiving and responding to real-time data transmission task instructions;

[0067] 3. It has the function of signaling interaction with the data transmission link autonomous management device in the ground TT&C data transmission station;

[0068] 4. It has the function of calculating the arc segment of the ground TT&C data transmission station passing by according to the ground TT&C data transmission station address and the satellite orbit;

[0069] 5. It has the function of pushing the signaling interaction result to the on-board high-speed data transmission device.

[0070] The data transmission link autonomous management device and the on-board data transmission service autonomous interaction software are automatically executed under pre-set rules. The rules are jointly specified and managed by the station network center and the mission center, including resource application rules, resource allocation rules, and signaling interaction protocols. The rules determine the application effect of high-speed data transmission. Driven by the rules, the data transmission link autonomous management device and the on-board data transmission service autonomous interaction software are combined with the in-station data transmission receiving device, the on-board high-speed data transmission device, the station network center, the mission center, etc. through the control channel of satellite-ground signaling interaction to realize the self-organization and automation of data transmission tasks. The specific process is as follows:

[0071] 1. The station network center and the mission center negotiate and unanimously specify the rules. The station network center configures the rules in the data transmission link autonomous management device 1, and the mission center uploads and configures them in the on-board data transmission service autonomous interaction software 2 through the satellite-ground link.

[0072] 2. The data transmission link autonomous management device 1 collects the link resource information of the in-station data transmission receiving device, and manages the data transmission link resources by dividing them into four parts: online queue (Online), standby queue (Standby), reserve queue (Reserve), and offline queue (offline).

[0073] 3. The station network center and the mission center push the label of the target satellite that requires high-speed data transmission services, the user center address, orbit information, and link status information such as data transmission rate to the data transmission link autonomous management device, and the data transmission link autonomous management device performs storage management and update.

[0074] 4. The data transmission link autonomous management device regularly enables the control channel with full-time and full-airspace coverage.

[0075] 5. The data transmission link autonomous management device calculates the next arc segment of the target satellite that requires high-speed data transmission services based on information such as the satellite orbit, arranges the target satellites in the order of inbound time to form a time queue Time_Q. At the same time, it extracts link resources from the Standby queue, sends lightweight task instructions to relevant in-station data transmission receiving devices, configures the status, and sequentially points the data transmission receiving beam to the inbound positions of the target satellites according to the order of the Time_Q queue.

[0076] 6. After the signaling interaction device of the target satellite enters the visible range of the ground TT&C data transmission station, it will first receive the forward signal of the control channel. After passing the authentication, it sends an access application signaling to the ground TT&C data transmission station. After receiving and passing the authentication of the access application signaling, the data transmission link autonomous management device will send a data transmission inquiry signaling to inquire whether the target satellite needs data transmission services.

[0077] 7. After receiving the signaling, the on-board data transmission service autonomous interaction software queries the status of the on-board high-speed data transmission storage area and the data transmission task queue, and sends a reply signaling. The reply signaling includes two states: "Yes" and "No". Among them, when answering "Yes", the "data transmission start time" of the data transmission service should be attached.

[0078] 8. The data transmission link autonomous management device receives the reply signaling. When the reply signaling is "Yes", it queries the "data transmission start time", and through task instructions, enables the data transmission link resources that have been pointed to the target satellite (if the "data transmission start time" is quite different from the current time, other resources in the Standby queue can be adjusted according to the data transmission resource configuration time) to receive the data transmission data transmitted by the high-speed data transmission device of the target satellite from the "data transmission start time", and at the same time adjusts this resource to the Online queue; when the reply signaling is "No", it puts the data transmission resources that have been pointed to the waiting target satellite back to the end of the Standby queue and waits for re-allocation of the pointing.

[0079] 9. During the transit of the ground TT&C data transmission station, the on-board data transmission service autonomous interaction software continuously waits to receive real-time data transmission task instructions from the target satellite platform. When receiving the instructions, if it is still within the coverage of the control channel, it will send a data transmission application signaling; the data transmission link autonomous management device receives the application signaling, queries the available resources in the Reserve queue, and sends a reply signaling. The reply signaling includes two states: "Yes" and "No". Among them, when answering "Yes", the "data transmission start time" of the data transmission service should be attached.

[0080] 10. The on-board data transmission service autonomous interaction software of the target satellite receives the reply signaling. When the reply signaling is "Yes", it queries the "data transmission start time", and starting from the "data transmission start time", drives the high-speed data transmission device of the target satellite to transmit data transmission data; when the reply signaling is "No", it abandons the data transmission task application for this arc segment, and at the same time sends the real-time data transmission task coordination result to the satellite platform.

[0081] 11. The data transmission link autonomous management device sends the matching situation of the received data transmission data and the user center address to the data transmission receiving device according to the matching situation of the data transmission link resources and the services of the target satellite. The data transmission receiving device transmits the data transmission data to the user center in real time.

[0082] 12. The data transmission link autonomous management device performs real-time and dynamic management based on rules on the four-part queues of the data transmission link resources. Among them, the Standby queue is given priority; the Reserve queue and the Offline queue are usually combined; when there are more emergency and temporary real-time data transmission tasks, more Reserve queue resources can be appropriately arranged.

[0083] By adopting the above method, the scheduling and use of the ground station data transmission equipment resources, the establishment of the space-ground data transmission link, and the data transmission data transmission will be completely completed through the coordination and self-organization among the in-station equipment and between the space and the ground. The station network center, the mission center, and the user center do not need to participate in the process at all. Only need to coordinate, evaluate, and formulate rules in advance, which significantly improves the utilization efficiency of the data transmission link resources and is especially suitable for the scenario of providing data transmission services for the remote sensing constellation satellite group with most data transmission link resources.

[0084] Specific Example

[0085] In this example, the self-organization function is mainly realized by relying on three newly added functional modules, including the data transmission link autonomous management device located in the ground TT&C data transmission station, and the signaling interaction device and the data transmission service autonomous interaction software located on the target satellite, as Figure 1 shown. Among them, the data transmission link autonomous management device is connected to all the data transmission receiving devices in the ground TT&C data transmission station, and is also connected to the station network center and the mission center, playing the role of resource management, link control, and information interaction of this station; the data transmission service autonomous interaction software of the target satellite is connected to the original on-board high-speed data transmission device and the signaling interaction device, playing the role of autonomously managing the data transmission link through signaling.

[0086] This example mainly includes five aspects, which are specifically described as follows.

[0087] 1. Space-ground Signaling and Fast Interaction Protocol

[0088] The matching of the ground data transmission link resources and the data transmission requirements between the target satellites and the establishment of the link rely on the space-ground signaling and the fast interaction protocol that are interacted through the space-ground control channel. In this example, a total of five types of signaling are used, namely the broadcast signaling, the network access application signaling, the data transmission inquiry signaling, the data transmission application signaling, and the response signaling. Among them, the broadcast signaling and the network access application signaling are the same as those used in the spaceflight TT&C opportunistic access and are compatible; the data transmission inquiry signaling and the data transmission application signaling are paired with the response signaling respectively and are used for two different usage scenarios:

[0089] a) When each target satellite initially enters the visible range of the ground TT&C data transmission station, the data transmission inquiry signaling and the response signaling are both used, and the interaction is completed by means of one-time inquiry on the ground and one-time response by the satellite.

[0090] The ground monitors the network access status of the target satellites. Once a new target satellite accesses the network, the new access satellite label is set through the broadcast signaling to inquire about it. After receiving the inquiry, the target satellite should first query whether there is data to be transmitted in the high-speed data transmission storage area. When there is data, the "data transmission start time" is calculated by deducting the preparation delay and the equalization delay from the current time; at the same time, the data transmission task queue is queried, and the transit arc segment is calculated and compared with the time in the task queue to determine whether the task is within the transit arc segment. If it is within the arc segment, the "data transmission start time" is calculated by deducting the preparation delay and the equalization delay from the task time. If one of the above two items is satisfied, the response signaling "yes" is sent; if neither is satisfied, the response signaling "no" is sent.

[0091] b) When the target satellite has a burst real-time data transmission task, the data transmission application signaling and the response signaling can be used, and the interaction is completed by means of one-time application by the satellite and one-time response by the ground. During the period when the on-board data transmission service autonomous interaction software passes by the ground TT&C data transmission station, it continuously waits to receive the real-time data transmission task instruction of the target satellite platform. When the instruction is received, the ground station address injected in advance and the satellite orbit obtained by query are used to calculate the coverage area of the current ground TT&C data transmission station. If it is still within the coverage range of the control channel, the data transmission application signaling will be sent. After receiving the application, the ground queries the resources of the Reserve queue or the Standby queue according to the rules. If there are no resources in both queues, the response signaling "no" is sent; if there are resources available to meet the requirements, the response signaling "yes" is sent.

[0092] This one-time interaction protocol is fast, efficient, and can take into account the different scenario requirements of normal data transmission and emergency data transmission.

[0093] 2. Rule-based resource management

[0094] This example proposes the self-organization of the in-station data transmission device link and adopts a rule-based resource management mode. The data transmission link autonomous management device divides all in-station data transmission link resources into four queues: Online queue, Standby queue, Reserve queue, and Offline queue for management. The rules stipulate the resource configuration principles and adjustment principles in different queues under different states.

[0095] The rules are formulated according to different task requirements and scenario states. All rules jointly abide by general principles, including:

[0096] a) Give priority to ensuring the Standby queue;

[0097] b) The resources being occupied should be adjusted into the Online queue;

[0098] c) Emergency and sudden data transmission tasks give priority to using the Reserve queue;

[0099] d) Unless due to reasons such as ground data transmission equipment failure, the Offline queue is generally not set.

[0100] According to the above principles, combined with task and scenario requirements, typical rules such as daily guarantee, emergency guarantee, and resource conservation are set. According to the rules, the queue resource quantities and dynamic adjustment methods under different in-station link resource quantities can be specified in advance.

[0101] Taking the example of having three link resources in the station, the rules and resource management methods are specifically described.

[0102] a) Under the daily guarantee rule, the resources are all listed in the Standby queue. The three link resources point to the inbound azimuths of three target satellites in the order of inbound time. If the first inbound target satellite has no high-speed data transmission requirement, it directly points to the inbound azimuth of the fourth inbound target satellite. If there is a high-speed data transmission requirement, it is adjusted into the Online queue. After the task is completed according to the time, it is adjusted back into the Standby queue for waiting to be used. Under this condition, the data transmission link tasks initiated by the target satellite are not responded to and are not allowed. This rule is suitable for scenarios with a large number of satellites, heavy data transmission tasks, and relatively certain tasks.

[0103] b) Under the emergency guarantee rule, two resources are listed in the Standby queue and one resource is listed in the Reserve queue. The resources in the Standby queue operate in a normal cycle. The resources in the Reserve queue are always waiting for satellite data transmission applications. Once an application appears, it points to the link establishment service and is adjusted into the Online queue. After the task is completed, it is adjusted back into the Reserve queue. The parallel data transmission ability of this rule is weaker than that of the daily guarantee rule, but it can continuously provide emergency data transmission services.

[0104] c) Under the resource conservation rule, resources are still included in the Standby queue. The difference from the daily guarantee rule is that this rule allows data transmission link tasks initiated by the target satellite's application, and the resources of the link are called from the Standby queue. The specific method is as follows: for the resources in the Standby queue, after receiving the high-speed data transmission requirements of the inbound target satellite, they do not directly adjust and enter the Online queue. Instead, they are sorted according to the "data transmission start time", and considering the preparation time such as configuration, they are adjusted and enter the Online queue before the data transmission start time; when receiving the data transmission link task application of the target satellite, query the "data transmission start time" sequence, temporarily assign the data transmission resources corresponding to the latest time to execute the emergency data transmission task, and according to the principle of "first application, first occupancy", before the original data transmission start time arrives, timely adjust and assign to execute the original data transmission task. This rule can appropriately take into account emergency data transmission tasks under the condition of ensuring daily task requirements, with high resource utilization rate, but the process is relatively complex and the emergency guarantee ability is not strong.

[0105] The rules can be evolved and adjusted according to the actual task scenarios and execution situations. Adopting this rule-based resource management mode forms an executable language that can be understood by machines and realizes the automation of link resource allocation and use.

[0106] 3. Status library management

[0107] The specific configuration of the link status, the routing matching of ground transmission, etc. are based on the unified management of the required status by the data transmission link autonomous management device. The station network center and the measurement and control center synchronize some necessary status information to the data transmission link autonomous management device to facilitate the complete decentralization of the task processes such as data transmission resource scheduling, link establishment, and data transmission within the entire station. The status library mainly includes the following status information:

[0108] a) Target satellite status data: including target label (used for target, link, and data matching), flight orbit (used for calculating the tracking trajectory and transit arc), data transmission link system, data transmission information rate (used for link status configuration);

[0109] b) In-station data transmission receiving device status data: including device station address (used for calculating the tracking trajectory and transit arc), link support ability (used for resource management);

[0110] c) Real-time health status data: the health status of the target satellite and ground devices (used to determine whether services can be provided normally);

[0111] d) Execution status data: including log data of self-organization and automated operation, and execution result data such as the number of data transmissions, time periods, data volumes, and data quality of each target satellite (used for performance evaluation).

[0112] The status library has three main usage modes: pre-configuration, regular update, and real-time update. Pre-configuration is to complete the synchronization and storage of the required status data (mainly the status data of target satellites and the status data of in-station data transmission receiving devices) at one time by the station network center and the mission center according to the requirements of the target satellite cluster; regular update is to synchronize and update the changed status data every mission cycle by the station network center and the mission center according to the changes of the target satellite cluster; real-time update mainly refers to the update of real-time health status data and execution status data, which is completed by the station network center, the mission center or the data transmission link autonomous management device. Generally, the status data of target satellites and the status data of in-station data transmission receiving devices are not updated in real time.

[0113] By setting up centralized and library-based management of necessary status data in the station, it is convenient for the data transmission link autonomous management device 1 to call and use locally on demand, without having to negotiate and obtain from the center again, which can efficiently support the completion of self-organizing link tasks.

[0114] 4. Point-to-Point Information Interface

[0115] The newly added device in this example is directly connected to the original in-station devices and satellite platform devices through a point-to-point information connection method, without changing the internal components and the interface connection method of the original system.

[0116] On the one hand, the data transmission link autonomous management device is directly connected to each in-station data transmission receiving device, sending lightweight task instructions and receiving status information; on the other hand, it is directly connected to the station network center and the mission center, receiving rule configuration information and status synchronization information of the target and the link, and sending working status information.

[0117] The on-board signaling interaction device is only directly connected to the on-board data transmission service autonomous interaction software to interact signaling information; on the one hand, the on-board data transmission service autonomous interaction software is directly connected to the signaling interaction device, on the other hand, it is directly connected to the on-board high-speed data transmission device to drive the transmission of data transmission data. At the same time, it is also directly connected to the satellite platform to receive real-time data transmission task requirements, query the status of the storage area, the data transmission task queue, and the satellite orbit status.

[0118] The received high-speed data transmission data still uses the original transmission channel. It only requires the data transmission link autonomous management device to send the target satellite identification information, the user center and address of the data transmission, and the matching relationship with the service data transmission link to the data transmission receiving device through lightweight instructions, and the device can directly configure the correct destination address.

[0119] 5. Full-Time and Full-Airspace Control Channel

[0120] This example uses a full-time and full-airspace control channel that is consistent with the opportunistic access of space TT&C. On the one hand, TT&C and data transmission tasks are generally parallel tasks and can be coordinated; on the other hand, the hardware infrastructure can be shared, and only adaptive adjustments to the signaling protocol are required to meet the implementation requirements of engineering tasks, with good feasibility and high efficiency.

[0121] In summary, the technical effects brought by the present invention include: (1) proposing a solution method and system structure for constellation and satellite group data transmission tasks in which high-speed in-station data transmission resources interact with target satellite clusters independently and self-organize to complete data transmission tasks; (2) proposing an implementation method for a self-organizing and fast-interacting signaling protocol for high-speed data transmission tasks based on the opportunistic access control channel of space TT&C; (3) proposing a management method for in-station data transmission link resources based on preset rules, as well as a method for generating and improving rules; (4) proposing a method for generating and managing a station-based lightweight status database, as well as an interface scheme that does not change the original system connection structure and mission function.

[0122] Through the present invention, it is possible to effectively solve the problem that the centralized overall scheduling and configuration of the data transmission link mode in the center has many coordination nodes, complex relationships, and a long process, which do not match the requirements such as many parallel constellation and satellite group tasks and fast task response requirements. The coordination is compressed to two points, namely the satellite and the station, and the link resources are directly coordinated and configured in the station without the need for personnel operation participation, which can greatly improve the utilization efficiency and automation level of the data transmission link resources.

[0123] Please note that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should be considered as falling within the scope described in this specification. The above embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A satellite-to-ground random access station-based data transmission equipment link self-organization method, characterized in that: The method is used to realize autonomous scheduling of high-speed data transmission link resources in a ground measurement and control data transmission station, self-organization establishment of satellite-to-ground data transmission links, and autonomous transmission of high-speed data transmission data; the method comprises: Step S1, configuring a data transmission link autonomous management device in a ground measurement and control data transmission station; The data transmission link autonomous management device is used to achieve: gathering the high-speed data transmission equipment link resources in the station and specifying lightweight tasks; gathering the number and orbit information of the target satellite that needs high-speed data transmission services; full-airspace signaling interaction with the target satellite; generating equipment task instructions according to the signaling; determining the high-speed data transmission data user address according to the target satellite number information; Among them, the full-airspace signaling interaction is implemented through the forward and return control channels formed on the ground with full-time and full-airspace coverage. It is the same as the random access of aerospace measurement and control. The forward direction is a continuously broadcast signal, and the return direction is an ALOHA channel for receiving burst short messages from different target satellites. The data transmission link autonomous management device is connected to each high-speed data transmission device in the station, the station network center, the task center and the user center of the data transmission device through an information interface; Step S2: configuring signaling interaction equipment and data transmission service autonomous interaction software on the target satellite that needs high-speed data transmission service, and making them work together with the original onboard high-speed data transmission equipment on the target satellite; Among them, the signaling interaction equipment is used to establish a control channel with the ground equipment, and the data transmission service autonomous interaction software is used to realize: query the current data transmission data storage area and data transmission task queue; receive and respond to real-time data transmission task instructions; conduct signaling interaction with the data transmission link autonomous management equipment in the ground measurement and control data transmission station; calculate the arc section of the transit ground measurement and control data transmission station according to the ground measurement and control data transmission station address and satellite orbit; push the signaling interaction results to the satellite-borne high-speed data transmission equipment; In the method, the autonomous management equipment of the data transmission link and the autonomous interactive software of the satellite data transmission service are automatically executed under the pre-set rules; the rules are jointly specified and managed by the station network center and the task center, including resource application rules, resource allocation rules, and signaling interaction protocols, and the rules determine the application effect of high-speed data transmission; driven by the rules, the autonomous management equipment of the data transmission link and the autonomous interactive software of the satellite data transmission service are combined with the data transmission receiving equipment in the station, the satellite high-speed data transmission equipment, the station network center, and the task center through the control channel of the satellite-ground signaling interaction to realize the self-organization and automation of the data transmission task.

2. A satellite-to-ground random access station-based data transmission equipment link self-organization method according to claim 1, characterized in that: The data transmission link autonomous management equipment and satellite-borne data transmission service autonomous interaction software work together with the data transmission receiving equipment in the station, the satellite-borne high-speed data transmission equipment, the station network center, and the mission center through the control channel of satellite-ground signaling interaction to achieve self-organization and automation of data transmission tasks; Specifically include: The station network center and the mission center specify the rules through consensus. The station network center configures the rules in the autonomous management equipment of the data transmission link, and the mission center uploads the rules to the autonomous interactive software of the satellite-borne data transmission service through the satellite-to-ground link. The data transmission link autonomous management device collects the link resource information of the data transmission receiving devices in the station, and divides the data transmission link resources into online queues, standby queues, reserved queues, and offline queues for management; The station network center and the mission center push the target satellite number, user center address, orbit information, and data transmission rate that require high-speed data transmission services to the data transmission link autonomous management device, which then performs storage management and updates. The autonomous management equipment of the data transmission link will enable the control channel with full-time and full-airspace coverage on a regular basis; The data transmission link autonomous management device calculates the next arc segment of the target satellite that needs high-speed data transmission service according to the satellite orbit information, and arranges the target satellites in the order of entry time to form a time queue Time_Q. At the same time, it extracts link resources from the standby queue, sends lightweight task instructions to the data transmission receiving equipment in the relevant station, configures the status, and points the data transmission receiving beam to the target satellite entry position in the order of the Time_Q queue; After entering the visual range of the ground measurement and control data transmission station, the signaling interaction equipment of the target satellite authenticates the forward signal of the received control channel, and after the authentication is passed, it sends the network access application signaling to the ground measurement and control data transmission station. After the data transmission link autonomous management equipment receives the application signaling and passes the authentication, it sends the data transmission inquiry signaling to inquire whether the target satellite needs data transmission service; After receiving the signal, the satellite data transmission service autonomous interactive software queries the status of the main body high-speed data transmission storage area and the data transmission task queue, and sends a reply signal; the reply signal includes two states: yes and no. If the answer is yes, the data transmission start time of the additional data transmission service is set; The data transmission link autonomous management device receives the reply signaling. If the reply signaling is yes, the data transmission start time is queried, and through the task instruction, the data transmission link resource that has been pointed to the target satellite receives the data transmission data transmitted by the high-speed data transmission device of the target satellite from the data transmission start time, and adjusts the resource to the online queue at the same time; if the reply signaling is no, the data transmission resource that has been pointed to the target satellite and is waiting is put back to the end of the standby queue to wait for reallocation of the direction; The autonomous interactive software of the satellite-borne data transmission service continuously waits to receive the real-time data transmission task instruction of the target satellite platform while passing through the ground measurement and control data transmission station. After receiving the instruction and being within the coverage of the control channel, it sends the data transmission application signaling; the autonomous management equipment of the data transmission link receives the application signaling, queries the available resources in the reserved queue, and sends the reply signaling; the reply signaling includes two states, yes and no. If the reply is yes, the data transmission start time of the additional data transmission service is added; The autonomous interactive software of the onboard data transmission service of the target satellite receives the reply signaling. If the reply signaling is yes, the start time of data transmission is queried, and the high-speed data transmission equipment of the target satellite is driven to transmit data transmission data from the start time of data transmission. If the reply signaling is no, the data transmission task application of this arc is abandoned, and the real-time data transmission task coordination result is reported to the satellite platform at the same time. The data transmission link autonomous management device sends the received data transmission data and the user center address matching situation to the data transmission receiving device according to the data transmission link resource and the service matching situation of the target satellite, and the data transmission receiving device transmits the data transmission data to the user center in real time; The data transmission link autonomous management device adopts rule-based real-time and dynamic management of the four queues of data transmission link resources; among them, the standby queue has the highest priority; the reserved queue and the offline queue are combined into one; and the reserved queue resources are given priority when real-time data transmission tasks are intensive.

3. The method for self-organizing a satellite-to-ground random access station-based data transmission equipment link according to claim 1, characterized in that: In the method, the data transmission link autonomous management equipment is connected to all data transmission receiving equipment in the ground measurement and control data transmission station, and is also connected to the station network center and the mission center to realize the station resource management, link control and information interaction; the data transmission service autonomous interaction software of the target satellite is connected to the original onboard high-speed data transmission equipment and signaling interaction equipment, and autonomously manages the data transmission link through signaling.

4. A satellite-to-ground random access station-based data transmission equipment link self-organization method according to claim 3, characterized in that: In the method, the matching of ground data transmission link resources and data transmission requirements between target satellites and link establishment are achieved based on satellite-ground signaling and a fast interaction protocol interacting through a satellite-ground control channel; the signaling is divided into broadcast signaling, network access application signaling, data transmission inquiry signaling, data transmission application signaling, and reply signaling; among them, the broadcast signaling and the network access application signaling are the same as the signaling used for random access of aerospace measurement and control; the data transmission inquiry signaling and the data transmission application signaling are paired with the reply signaling for use in different usage scenarios.

5. A satellite-to-ground random access station-based data transmission equipment link self-organization method according to claim 4, characterized in that: The usage scenario includes: each target satellite initially enters the visual range of the ground measurement and control data transmission station, and uses data transmission inquiry signaling and response signaling to complete the interaction in a way of one inquiry from the ground and one response from the satellite; wherein: The ground monitors the network access status of the target satellite. When a new target satellite enters the network, the new satellite number is set through broadcast signaling to query it; after receiving the query, the target satellite first queries the high-speed data transmission storage area for data to be transmitted. When there is data, the preparation delay and waiting delay are deducted from the current time to calculate the data transmission start time; at the same time, the data transmission task queue is queried, the time in the transit arc is calculated and compared with the time in the task queue to determine whether the task is within the transit arc. If it is within the arc, the preparation delay and waiting delay are deducted from the task time to calculate the data transmission start time; if one of the two conditions is met, a reply signal is sent, and if both are not met, a reply signal is sent.

6. A satellite-to-ground random access station-based data transmission equipment link self-organization method according to claim 4, characterized in that: The usage scenario includes: when the target satellite has a sudden real-time data transmission task, the data transmission application signaling and the response signaling are used to complete the interaction in a manner of one application by the satellite and one response by the ground; wherein: During the transit of the ground measurement and control data transmission station, the autonomous interactive software of the satellite-borne data transmission service continuously waits to receive real-time data transmission task instructions from the target satellite platform; when receiving the instructions, it uses the ground station address injected in advance and the satellite orbit obtained by query to calculate the current coverage area of ​​the ground measurement and control data transmission station; if it is still within the coverage of the control channel, it sends a data transmission application signal; after receiving the application, the ground queries the reserved queue or standby queue resources according to the rules, and if there are no resources, it replies to the signal with no, and if there are resources, it replies to the signal with yes.

7. A satellite-to-ground random access station-based data transmission equipment link self-organization method according to claim 3, characterized in that: In the method, the self-organization of the data transmission equipment link in the station adopts a rule-based resource management mode; the data transmission link autonomous management device divides all data transmission link resources in the station into online queues, standby queues, reserved queues, and offline queues, and adopts different configuration principles and adjustment principles for resources in different queues in different states; wherein: Prioritize the standby queue; The occupied resources are adjusted into the standby queue; Emergency and sudden data transmission tasks use the reserved queue first; Unless the ground data transmission equipment fails, no offline queue will be set.

8. The satellite-to-ground random access station-based data transmission equipment link self-organization method according to claim 3, characterized in that: In the method, the specific configuration of the link status and the route matching of ground transmission are based on the unified management of the required status by the data transmission link autonomous management device; the station network center and the measurement and control center synchronize the necessary status information to the data transmission link autonomous management device, so as to facilitate the complete decentralization of the data transmission resource scheduling, link establishment, and data transmission process in the entire station; the status library includes the following status information: Target satellite status data: target number, flight orbit, data transmission link system, data transmission information rate; In-station data transmission receiving device status data: device site, link support capability; Real-time health status data: health status of target satellites and ground equipment; Execution status data: self-organized, automated operation log data, execution result data such as the number of data transmissions, time period, data volume, and data quality of each target satellite.

9. An electronic device, characterized in that: The electronic device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the method for self-organizing a satellite-to-ground random access station-based data transmission device link as described in any one of claims 1-8 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the method for self-organizing a link of a satellite-to-ground random access station-based data transmission device as described in any one of claims 1-8 is implemented.

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