A networking method, system and device of a space network system of a low earth orbit constellation

Abstract

The application provides a networking method, system and device of a low-orbit constellation space network system, and relates to the technical field of satellite communication. The networking method of the low-orbit constellation space network system comprises the following steps: replacing, by a first satellite of a first satellite group, a second satellite of a second satellite group which corresponds to a second satellite serving as a first node satellite in a first type network; and taking, as a second node satellite, the second satellite of the second satellite group which no longer serves as the first node satellite in the first type network. The device is used for executing the above method. The networking method, system and device of the low-orbit constellation space network system provided by the embodiment of the application improve the stability of the first type network.

Description

Technical Field

[0001] This invention relates to the field of satellite communication technology, and specifically to a networking method, system, and apparatus for a low-Earth orbit constellation space network system. Background Technology

[0002] Currently, satellite internet has become a focus of development in the global information and communication field, with multiple constellations being deployed on a large scale, especially low-Earth orbit satellite constellations, which are developing rapidly.

[0003] In existing technologies, satellite internet constellation deployments typically employ single-layer or multi-layer constellations. In multi-layer constellation deployments, each layer of satellite constellations operates within a certain orbital altitude range, maintaining a safe distance at that altitude. In current inter-satellite interconnection schemes, each layer of satellite constellations generally maintains intra-layer inter-satellite networking links, and the functions of each node satellite in the space network are consistent. As the number of satellites increases, the merging of new and old satellites through proximity interconnection leads to a rapid expansion of the number of routing nodes, resulting in decreased stability of the satellite internet. Summary of the Invention

[0004] To address the problems in the prior art, embodiments of the present invention provide a networking method, system, and apparatus for a low-Earth orbit constellation space network system, which can at least partially solve the problems existing in the prior art.

[0005] In a first aspect, embodiments of the present invention provide a method for networking a low-Earth orbit constellation space network system, comprising: replacing the second satellite of a second satellite group, which is a first node satellite in a first type of network, with the first satellite of a first satellite group;

[0006] The second satellite in the second satellite group, which is no longer the first node satellite of the first type network, will be designated as the second node satellite.

[0007] Furthermore, the networking method for the low-Earth orbit constellation space network system provided in this embodiment of the invention also includes:

[0008] At least some of the satellites in the first satellite group will be added as the first node satellites in the first type of network.

[0009] Furthermore, replacing the second satellite of the corresponding second satellite group, which is the first node satellite in the first type of network, with the first satellite of the first satellite group includes:

[0010] By replacing one of the first satellites in the first satellite group with one of the second satellites in the first type of network, multiple second satellites in the second satellite group can be replaced.

[0011] Furthermore, at least one of the first type of satellites, the second type of satellites, and terminal-type aircraft is connected to the first node satellite of the corresponding first type of network.

[0012] Secondly, this invention proposes a low-Earth orbit constellation space network system, including multiple first-node satellites and multiple second-node satellites of a first-class network. Adjacent first-node satellites are interconnected through inter-satellite links, and each second-node satellite is connected to its adjacent first-node satellite.

[0013] Furthermore, the first node satellite is the first satellite of the first satellite group.

[0014] Furthermore, the plurality of first node satellites include satellites deployed in phase N and satellites not replaced in phase N-1, where N is greater than or equal to 2; wherein, the satellites in phase N have not been fully deployed.

[0015] Furthermore, the second node satellite includes satellites deployed in phases 1 to N-1.

[0016] Furthermore, the second node satellite includes at least one of the following: a first-class satellite, a second-class satellite, and a terminal-class spacecraft.

[0017] Furthermore, the physical topology of the first type of network is a grid-type topology.

[0018] Thirdly, this invention proposes a networking device for a low-Earth orbit constellation space network system, comprising:

[0019] The replacement module is used to replace the second satellite in the second satellite group, which is the first node satellite in the first type of network, with the first satellite in the first satellite group.

[0020] As a module, it is used to designate a second satellite in the second satellite group that is no longer a first node satellite in the first type of network as a second node satellite.

[0021] Fourthly, the present invention provides a computer device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the program to implement the networking method of the low-Earth orbit constellation space network system described in any of the above embodiments.

[0022] Fifthly, the present invention provides a computer-readable storage medium storing a computer program / instructions that, when executed by a processor, implement the networking method of the low-Earth orbit constellation space network system described in any of the above embodiments.

[0023] Sixthly, the present invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the networking method of the low-Earth orbit constellation space network system described in any of the above embodiments.

[0024] The low-Earth orbit constellation space network system networking method, system, and apparatus provided in this invention replace the second satellite of the second satellite group, which is the first node satellite in the first type of network, with the first satellite of the first satellite group; and make the second satellite of the second satellite group, which is no longer the first node satellite in the first type of network, the second node satellite, the second satellite of the second satellite group, the second node satellite, the second node satellite, the first type of network. This realizes the iterative evolution of the first type of network, avoids the expansion of the number of routing nodes, enhances the communication capability of the first type of network, and improves the stability of the first type of network. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0026] Figure 1 This is a flowchart illustrating the networking method of the low-Earth orbit constellation space network system provided in the first embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the low-Earth orbit constellation space network system provided in the second embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the planar structure of the first-phase low-Earth orbit constellation provided in the third embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the planar structure after the second phase of the low-Earth orbit constellation networking provided in the fourth embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the networking device of the low-Earth orbit constellation space network system provided in the fifth embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram of the physical structure of the computer device provided in the sixth embodiment of the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0033] To facilitate understanding of the technical solution provided in this application, the relevant content of the technical solution in this application will be explained below.

[0034] A low Earth orbit (LEO) constellation is a satellite system consisting of several low Earth orbit (LEO) satellites.

[0035] Satellite internet technology is rapidly evolving. As constellation development enters a stable iteration phase, inter-satellite communication technology will evolve according to service requirements. During this evolution, if new and old satellites are integrated and networked by adding orbital planes or satellites within a single plane and interconnecting them locally, the number of routing nodes will increase dramatically. Simultaneously, there are cases where inter-satellite communication terminals for newly launched satellites have already undergone technological evolution—for example, with higher transmission rates and longer distances. This leads to differences in communication systems between old and new links, requiring alternating interconnections. This results in alternating changes in inter-satellite link capacity, increased routing convergence difficulty, increased latency, and reduced topology stability—practical engineering problems. Therefore, from a space network perspective, neither connecting older satellite constellations to new constellations with the same functionality as their satellite nodes, nor allowing older and new constellations to operate independently without interconnection in space, represents a sustainable evolutionary approach for inter-satellite interconnection in satellite internet constellations.

[0036] Therefore, this application proposes a multi-layered structure of "backbone network + local area network" for space-based satellite internet. Specifically, a portion of the evolved satellite nodes are planned to form the backbone network within the low-Earth orbit constellation design. Each new evolutionary constellation node can connect to nearby nodes of the older constellation, as well as various local area network nodes. This approach facilitates the upgrading and replacement of the old and new constellations while simultaneously enhancing the overall constellation's multiple service capabilities. The proposed multi-layered structure of "backbone network + local area network" has a minimal impact on the overall satellite internet due to the increased functionality and capacity resulting from routing expansion. Furthermore, the addition or expansion of end nodes during the iterative evolution of inter-satellite links has minimal impact on the high-speed interconnection of the backbone network.

[0037] Figure 1 This is a flowchart illustrating the networking method of a low-Earth orbit constellation space network system provided in the fourth embodiment of the present invention, as shown below. Figure 1 As shown, the networking method for a low-Earth orbit constellation space network system provided in this embodiment of the invention includes:

[0038] S101, Replace the second satellite of the second satellite group, which is the first node satellite in the first type of network, with the first satellite of the first satellite group;

[0039] Specifically, after the launch of the first satellite in the first satellite group, the first satellite in the first satellite group can replace the second satellite in the second satellite group, which serves as the first node satellite in the first type of network, thus becoming the first node satellite in the first type of network. The second satellite in the second satellite group, which serves as the first node satellite in the first type of network, can be gradually replaced by the first satellite in the first satellite group. The replacement relationship between the first satellite in the first satellite group and the second satellite in the second satellite group within the first type of network is pre-set. The first satellite in the first satellite group, as the first node satellite, will establish communication connections with adjacent first node satellites. For first node satellites, network layer connections can be established through satellite numbers and network addresses to achieve communication connections within the first type of network.

[0040] For example, the first type of network can be a backbone network, and the second type of network can be a local area network (LAN). Nodes in the backbone network are interconnected via laser or microwave links to achieve inter-satellite routing. Backbone network nodes are connected to the replaced satellites or other functional satellites to form an inter-satellite LAN, thereby enabling functional expansion or service enhancement.

[0041] In one embodiment, the first satellite group may be a newly deployed batch or multiple batches of satellites, and the second satellite group may be an already deployed and networked constellation. The performance evolution of the backbone network nodes of the second satellite group is achieved by replacing at least some of the satellites in the first satellite group with some of the backbone node satellites in the second satellite group.

[0042] It is understandable that the satellites in the first satellite group have better onboard payload performance than those in the second satellite group, such as higher single-satellite data transmission capacity or faster inter-satellite communication rates. This embodiment does not make specific limitations here. Replacing backbone network nodes with satellite nodes that have higher performance payloads, without increasing the number of backbone nodes, can prevent the problem of slow routing convergence speed caused by the expansion of the number of routing nodes.

[0043] S102. The second satellite in the second satellite group, which is no longer the first node satellite of the first type network, is designated as the second node satellite.

[0044] Specifically, when the first satellite of the first satellite group replaces the second satellite of the second satellite group as the first node satellite in the first type of network, the replaced second satellite of the second satellite group no longer serves as the first node satellite in the first type of network, but instead becomes the second node satellite. This second satellite of the second satellite group can serve as the second node satellite of the first satellite in an adjacent first satellite group. The first node satellite and the second node satellite of the first type of network can establish a data link layer communication connection via local area network addresses.

[0045] For example, after the first satellite A of the first satellite group is successfully launched, a preset instruction can be sent through the ground network management system to the second satellite a of the second satellite group in the first type of network that the first satellite A replaces, so that the second satellite a no longer serves as the first node satellite in the first type of network. The transmission power of the second satellite a can be reduced, and the second satellite a can establish a communication connection with the first satellite A, which serves as the first node satellite, as the second node satellite.

[0046] Understandably, the terrestrial network management system can establish communication connections with the first node satellite in the first type of network, as well as with each second node satellite, to perform network topology management and build network connections.

[0047] The networking method for a low-Earth orbit constellation space network system provided in this embodiment of the invention replaces the second satellite of the second satellite group, which is the first node satellite in the first type of network, with the first satellite of the first satellite group; and uses the second satellite of the second satellite group, which is no longer the first node satellite in the first type of network, as the second node satellite, thereby realizing the iterative evolution of the first type of network, avoiding the expansion of the number of routing nodes, enhancing the communication capability of the first type of network, and improving the stability of the first type of network.

[0048] Based on the above embodiments, the networking method for a low-Earth orbit constellation space network system provided by the embodiments of the present invention further includes:

[0049] At least some of the satellites in the first satellite group will be added as the first node satellites in the first type of network.

[0050] Specifically, in order to expand the coverage of the first type of network, satellites in the first satellite group that at least partially cover the area not covered by the original first type of network are designated as new first node satellites in the first type of network. These new first node satellites will establish communication connections with their neighboring first node satellites.

[0051] Based on the above embodiments, further, replacing the second satellite of the second satellite group, which is the first node satellite in the first type of network, with the first satellite of the first satellite group includes:

[0052] By replacing one of the first satellites in the first satellite group with one of the second satellites in the first type of network, multiple second satellites in the second satellite group can be replaced.

[0053] Specifically, the first satellite in the first satellite group can have undergone iterative evolution in technology, enabling it to have faster transmission rates and longer transmission distances. When practical applications are met, one first satellite in the first satellite group can replace multiple second satellites in the second satellite group within the first type of network, thereby reducing the number of first-node satellites in the first type of network and helping to lower the cost of deploying satellites in the next phase.

[0054] Based on the above embodiments, at least one of the first type of satellite, the second type of satellite, and the terminal type of spacecraft is further connected to the corresponding first node satellite.

[0055] Specifically, first-type satellites can be launched to expand the constellation network. These first-type satellites will establish communication connections with their corresponding first-node satellites. The correspondence between the first-type satellites and the first-node satellites is predetermined.

[0056] A second type of satellite can be launched to expand the satellite's functionality. Examples of second-type satellites include radar satellites, SAR satellites, and optical remote sensing satellites. These second-type satellites will communicate with their corresponding first-node satellites. The correspondence between the second-type satellites and the first-node satellites is predetermined.

[0057] Terminal-type aircraft can be launched to connect to the corresponding first-node satellite to obtain network information services.

[0058] Figure 2 This is a schematic diagram of the structure of the low-Earth orbit constellation space network system provided in the second embodiment of the present invention, as shown below. Figure 2 As shown, the low-Earth orbit constellation space network system provided in this embodiment of the invention includes multiple first node satellites 1 and multiple second node satellites 2 of a first type of network. Adjacent first node satellites 1 are interconnected through inter-satellite links, and each second node satellite 2 is connected to an adjacent first node satellite 1.

[0059] Specifically, each first node satellite 1 is a LEO (Low Earth Orbit) satellite, and its position is pre-planned. Adjacent first node satellites 1 can be interconnected via inter-satellite links. All first node satellites 1 can communicate with each other. Each first node satellite 1 may have a corresponding second node satellite 2, which is connected to its adjacent first node satellite 1. The number and position of the first node satellites 1 are set according to actual needs, and this embodiment of the invention does not impose any limitations. The position and number of the second node satellites 2 are also set according to actual needs, and this embodiment of the invention does not impose any limitations.

[0060] During the iterative evolution of the low-Earth orbit constellation, the first node satellite 1 will be gradually replaced by the first satellite of the first satellite group. Instead of becoming the second satellite in the second satellite group that is no longer the first node satellite, it will become the second node satellite of the first satellite in an adjacent first satellite group. Furthermore, additional satellites such as expansion satellites, radar satellites, and optical remote sensing satellites can be launched as second node satellites as needed.

[0061] In this embodiment of the invention, the aforementioned first type of network refers to a communication network used for interconnection and data transmission between different space regions. This first type of network is constructed by networking multiple low Earth orbit (LEO) satellites.

[0062] For example, such as Figure 2 As shown, the low-Earth orbit constellations evolve along the route from the first phase to the second phase. Figure 2 In the first phase of the low-Earth orbit (LEO) constellation, satellites are represented by triangles, while in the second phase, constellations are represented by dots. The first phase of the LEO constellation uses x Gbps inter-satellite laser interconnection technology, while the second phase uses y Gbps inter-satellite laser interconnection technology, where y is greater than x. The specific values ​​of x and y are set according to actual needs, and this embodiment of the invention does not impose limitations. During the specific constellation construction process, the inter-satellite interconnection iterative evolution can be carried out according to the following steps:

[0063] (1) The low-Earth orbit constellation deployed in the first phase constitutes a basic service satellite interconnection network, namely, a first-class network, such as... Figure 3 As shown in the figure, the triangles represent satellites in the first phase of the low-Earth orbit constellation deployment;

[0064] (2) With the launch and deployment of satellites in the second phase of the low-Earth orbit (LEO) constellation, the second phase LEO constellation forms a Class I network, creating a satellite interconnection network that enhances services; each LEO satellite in the second phase LEO constellation serves as a first node satellite 1, such as... Figure 4 As shown in the figure, the dots represent satellites in the second phase of the low-Earth orbit constellation deployment;

[0065] (3) After the second phase of the low-Earth orbit (LEO) constellation completes its inter-satellite networking, the inter-satellite links of the first phase of the LEO constellation will no longer be interconnected. LEO satellites in the first phase of the LEO constellation will connect to adjacent LEO satellites in the second phase of the LEO constellation via inter-satellite links, becoming second node satellites (2) attached to the adjacent second-phase satellites. Figure 4 As shown. In addition, a functional extension satellite 3 can be launched, which can connect with an adjacent first-node satellite. For example... Figure 4 As shown in the figure, the round pentagram represents the functional expansion satellite 3.

[0066] During the evolution from the first-phase LEO constellation to the second-phase LEO constellation, the first-phase satellites only serve as base stations to access service traffic and do not act as routing nodes. The second-phase LEO constellation forms a Class I network with minimal changes in network topology and relative stability. The Class I network formed by the second-phase LEO constellation primarily uses yGbps transmission links, and other satellites can access the network through the first-phase satellites with other lower communication rates without reducing the transmission efficiency of the Class I network.

[0067] The low-Earth orbit constellation space network system provided in this embodiment of the invention includes multiple first node satellites and multiple second node satellites of a first type of network. Adjacent first node satellites are interconnected through inter-satellite links, and each second node satellite is connected to an adjacent first node satellite. This can avoid the expansion of the number of routing nodes, enhance the communication capability of the first type of network, and improve the stability of the first type of network.

[0068] Based on the above embodiments, the first node satellite 1 further adopts the first satellite of the first satellite group.

[0069] Specifically, the first satellite in the first satellite group has better performance than the second satellite in the second satellite group, such as higher transmission rate and longer transmission distance. Therefore, by designating the first satellite in the first satellite group as the first node satellite 1, after the low-Earth orbit constellation iterative evolution is completed, all first node satellites 1 will be the first satellites of the first satellite group, which can improve the transmission efficiency of the first type of network.

[0070] Based on the above embodiments, the plurality of first node satellites 1 further include satellites deployed in phase N and satellites not replaced in phase N-1, where N is greater than or equal to 2; wherein, the satellites in phase N have not been fully deployed.

[0071] Specifically, during the deployment of the Nth phase of the low-Earth orbit constellation, since it is impossible to replace the satellites deployed in the N-1th phase within the first node satellite 1 of the first-type network all at once, before the deployment of the Nth phase satellites is completed, the first node satellite 1 in the first-type network includes the satellites already deployed in the Nth phase and the satellites not replaced in the N-1th phase. The satellites not replaced in the N-1th phase refer to the N-1th phase satellites among the multiple first node satellites 1 that have not been replaced with satellites from the Nth phase. N is a positive integer, and N is greater than or equal to 2.

[0072] Based on the above embodiments, the second node satellite 2 further includes satellites deployed in phases 1 to N-1.

[0073] Specifically, as the low-Earth orbit constellation iterates and evolves, since the satellites deployed in phase N will be designated as the first node satellite 1, the satellites deployed in phases 1 to N-1 that are not designated as the first node satellite 1 will become the second node satellites of the adjacent satellites deployed in phase N. The second node satellite 2 can include the satellites deployed in phases 1 to N-1.

[0074] It should be noted that due to the time lag in the iterative evolution of low-Earth orbit satellites, when deploying the Nth phase of satellites, there are relatively few, or even none, satellites deployed in the N-2th phase that can be retained and used.

[0075] Based on the above embodiments, the second node satellite 2 further includes at least one of the first type of satellite, the second type of satellite, and the terminal type of spacecraft.

[0076] Specifically, Category I satellites, Category II satellites, and terminal-type spacecraft serve as functional extension satellites, accessing the network via inter-satellite links in the low-Earth orbit constellation that are not part of the Category I network. Category I satellites, Category II satellites, and terminal-type spacecraft also act as second-node satellites (2) connected to adjacent Category I network node satellites.

[0077] The first type of satellite is an expansion satellite, used to expand the constellation network. First-type satellites can join the first-type network through adjacent first-node satellites. Because they need to remain within the network for as long as possible, first-type satellites should be at the same orbital altitude as the first-node satellites of the first-type network to maintain relative motion stability and reduce the frequency of satellite handover. The ground network management system manages and controls first-type satellites as part of the network infrastructure.

[0078] The second category of satellites are special-function satellites, used to expand the functionality of existing satellites, such as radar satellites, SAR satellites, and optical remote sensing satellites. These second-category satellites can choose their orbits according to their mission requirements, serving as information sources for space information services and can be connected to the first-category network. The ground network management system manages and controls these second-category satellites as information service resources.

[0079] Terminal-type aircraft, such as manned aircraft, rockets, and on-orbit maintenance vehicles, can access the first type of network to obtain network information services. The ground network management system manages and controls these terminal-type aircraft according to their status as end users.

[0080] Building upon the above embodiments, the inter-satellite link further includes a laser link and a microwave link. Communication between satellites via the laser link enables high-speed data transmission, offers high security, and strong anti-interference capabilities. Microwave link technology is mature and has low equipment costs.

[0081] like Figure 3 As shown, based on the above embodiments, the physical topology of the first type of network is further described as a mesh topology.

[0082] In a grid-like topology, a first-node satellite 1 can communicate with multiple adjacent first-node satellites 1. Because multiple communication links exist, if one link fails, data can be transmitted via other paths, improving the reliability of the Class I network. When a new first-node satellite joins, it only needs to establish a connection with its adjacent first-node satellites in the Class I network to integrate into it, facilitating the expansion of the Class I network.

[0083] The low-Earth orbit constellation space network system provided in this invention only needs to consider the first node satellite of the first type of network for path planning of the space network layer. Compared with the existing technology of integrating new and old satellites into a network, the routing calculation pressure is lower and the convergence speed is faster because there are fewer first node satellites. In addition, the frequency of flooding is reduced due to the reduction in the number of sudden failures, and the number of solar interference cases that need to be considered in the routing calculation process is reduced.

[0084] The low-Earth orbit constellation space network system provided in this embodiment of the invention has fewer first-node satellites compared to the existing technology's integration of new and old satellites in the first-type network. This results in less customized planning path (TE) status data acquisition, reduced computational pressure, and lower requirements for equipment capabilities. In the case of customized planning path, the ordered list of packet header segments, i.e., SIDlist, becomes shorter, and the effective payload ratio increases.

[0085] The low-Earth orbit constellation space network system provided in this application is suitable for the iterative evolution from xGbps inter-satellite lasers to yGbps inter-satellite lasers, as well as the iterative evolution from inter-satellite microwaves to inter-satellite lasers and from yGbps inter-satellite lasers to higher-rate inter-satellite lasers.

[0086] This application adopts a multi-layered space-based architecture of "Category 1 network + Category 2 network". That is, in the constellation design, a portion of the evolved satellite nodes are planned to form a Category 1 network. Each Category 1 node satellite of the new evolution constellation can connect to the nearest node of the old constellation, and can also connect to a variety of Category 2 node satellites.

[0087] This application proposes a functional expansion satellite, which utilizes a new functional satellite with access to non-Class 1 network inter-satellite links in the constellation to achieve tasks such as expanding the constellation network, extending its functions, or providing services to spacecraft.

[0088] Figure 5 This is a schematic diagram of the networking device of the low-Earth orbit constellation space network system provided in the fifth embodiment of the present invention, as shown below. Figure 5 As shown, the networking device for the low-Earth orbit constellation space network system provided in this embodiment of the invention includes a replacement module 501 and a substitute module 502, wherein:

[0089] Replacement module 501 is used to replace the second satellite of the second satellite group, which is the first node satellite in the first type of network, with the first satellite of the first satellite group; and module 502 is used to replace the second satellite of the second satellite group, which is no longer the first node satellite in the first type of network, with the second node satellite.

[0090] Specifically, after launching the first satellite of the first satellite group, the replacement module 501 replaces the second satellite of the second satellite group, which serves as the first node satellite in the first type of network, with the first satellite of the first satellite group, thus making it the first node satellite in the first type of network. The second satellite of the second satellite group, serving as the first node satellite in the first type of network, can be gradually replaced by the first satellite of the first satellite group. The replacement relationship between the first satellite of the first satellite group and the second satellite of the second satellite group in the first type of network is pre-set. The first satellite of the first satellite group, as the first node satellite, establishes communication connections with adjacent first node satellites. For the first node satellite, a network layer connection can be established through the satellite number and network address to achieve communication connections within the first type of network.

[0091] When the first satellite of the first satellite group replaces the second satellite of the second satellite group as the first node satellite in the first type of network, the replaced second satellite of the second satellite group no longer serves as the first node satellite in the first type of network, but instead becomes the second node satellite. Module 502 designates this second satellite of the second satellite group as the second node satellite of the adjacent first satellite group. The first node satellite and the second node satellite of the first type of network can establish a data link layer communication connection through local area network addresses.

[0092] The networking device for the low-Earth orbit constellation space network system provided in this embodiment of the invention replaces the second satellite of the second satellite group, which is the first node satellite in the first type of network, with the first satellite of the first satellite group; and uses the second satellite of the second satellite group, which is no longer the first node satellite in the first type of network, as the second node satellite, thereby realizing the iterative evolution of the first type of network, avoiding the expansion of the number of routing nodes, enhancing the communication capability of the first type of network, and improving the stability of the first type of network.

[0093] Based on the above embodiments, module 502 is further configured to:

[0094] At least some of the satellites in the first satellite group will be added as the first node satellites in the first type of network.

[0095] Based on the above embodiments, the replacement module 501 is further configured to:

[0096] By replacing one of the first satellites in the first satellite group with one of the second satellites in the first type of network, multiple second satellites in the second satellite group can be replaced.

[0097] Based on the above embodiments, at least one of the first type of satellite, the second type of satellite, and the terminal type of aircraft is further connected to the first node satellite of the corresponding first type of network.

[0098] The embodiments of the device provided in this invention can be used to execute the processing flow of the above-described method embodiments. Its functions will not be repeated here, but can be referred to the detailed description of the above-described method embodiments.

[0099] Figure 6 This is a schematic diagram of the physical structure of the computer device provided in the sixth embodiment of the present invention, as shown below. Figure 6As shown, the computer device may include a processor 601, a communications interface 602, a memory 603, and a communication bus 604. The processor 601, communications interface 602, and memory 603 communicate with each other via the communication bus 604. The processor 601 can call logical instructions in the memory 603 to execute the methods provided in the above embodiments, such as: replacing a second satellite in a second satellite group that is a first node satellite in a first type of network with a first satellite in a first satellite group; and making a second satellite in the second satellite group that is no longer a first node satellite in the first type of network a second node satellite.

[0100] Furthermore, the logical instructions in the aforementioned memory 603 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0101] This embodiment discloses a computer program product, which includes a computer program / instructions stored on a computer-readable storage medium. When the computer program / instructions are executed by a computer, the computer can execute the methods provided in the above-described method embodiments, such as: replacing the second satellite of the second satellite group, which is a first node satellite in the first type of network, with the first satellite of the first satellite group; and using the second satellite of the second satellite group that is no longer a first node satellite in the first type of network as a second node satellite.

[0102] This embodiment provides a computer-readable storage medium storing a computer program / instruction that causes the computer to execute the methods provided in the above-described method embodiments, such as: replacing a second satellite in a second satellite group that is a first node satellite in a first type of network with a first satellite in a first satellite group; and using a second satellite in a second satellite group that is no longer a first node satellite in a first type of network as a second node satellite.

[0103] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0104] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0105] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0106] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0107] In the description of this specification, the references to terms such as "an embodiment," "a specific embodiment," "some embodiments," "for example," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0108] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0109] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0110] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0111] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0112] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0113] In the description of this specification, the references to terms such as "an embodiment," "a specific embodiment," "some embodiments," "for example," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0114] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A networking method for a low-Earth orbit constellation space network system, characterized in that, include: The first satellite of the first satellite group replaces the second satellite of the second satellite group, which is the first node satellite in the first type of network. The second satellite in the second satellite group, which is no longer the first node satellite of the first type network, will be designated as the second node satellite.

2. The method according to claim 1, characterized in that, Also includes: At least some of the satellites in the first satellite group will be added as the first node satellites in the first type of network.

3. The method according to claim 1, characterized in that, The step of replacing the second satellite in the second satellite group, which is the first node satellite in the first type of network, with the first satellite in the first satellite group includes: By replacing one of the first satellites in the first satellite group with one of the second satellites in the first type of network, multiple second satellites in the second satellite group can be replaced.

4. The method according to any one of claims 1 to 3, characterized in that, At least one of the following types of satellites—Class I, Class II, and terminal-type aircraft—is connected to the first node satellite of the corresponding Class I network.

5. A low-Earth orbit constellation space network system, characterized in that, It includes multiple first-node satellites and multiple second-node satellites in the first-class network. Adjacent first-node satellites are interconnected through inter-satellite links, and each second-node satellite is connected to its adjacent first-node satellite.

6. The low-Earth orbit constellation space network system according to claim 5, characterized in that, The first node satellite is the first satellite of the first satellite group.

7. The low-Earth orbit constellation space network system according to claim 5, characterized in that, The plurality of first node satellites include satellites deployed in phase N and satellites not replaced in phase N-1, where N is greater than or equal to 2; among them, the satellites in phase N have not been fully deployed.

8. The low-Earth orbit constellation space network system according to claim 6 or 7, characterized in that, The second node satellites include those deployed in phases 1 to N-1.

9. The low-Earth orbit constellation space network system according to claim 5, characterized in that, The second node satellite includes at least one of the following: a first-class satellite, a second-class satellite, and a terminal-class spacecraft.

10. The low-Earth orbit constellation space network system according to claim 5, characterized in that, The physical topology of the first type of network is a grid topology.

11. A networking device for a low-Earth orbit constellation space network system, characterized in that, include: The replacement module is used to replace the second satellite in the second satellite group, which is the first node satellite in the first type of network, with the first satellite in the first satellite group. As a module, it is used to designate a second satellite in the second satellite group that is no longer a first node satellite in the first type of network as a second node satellite.

12. A computer device, comprising a memory, a processor, and a computer program stored in the memory, characterized in that, The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 4.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program / instructions that, when executed by a processor, implement the steps of the method according to any one of claims 1 to 4.

14. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the method according to any one of claims 1 to 4.

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