CN117279072B

CN117279072B - Terminal access method and device

Info

Publication number: CN117279072B
Application number: CN202311552256.9A
Authority: CN
Inventors: 童建飞; 严宏; 徐晓帆
Original assignee: Shanghai Satellite Internet Research Institute Co ltd
Current assignee: Shanghai Satellite Internet Research Institute Co ltd
Priority date: 2023-11-20
Filing date: 2023-11-20
Publication date: 2024-02-23
Anticipated expiration: 2043-11-20
Also published as: CN117279072A

Abstract

The disclosure provides a terminal access method and device, the method includes: acquiring distances among a plurality of terminals, and clustering the plurality of terminals according to the distances among the plurality of terminals to obtain a plurality of clusters; determining an access strategy corresponding to the type according to the type of at least one terminal in at least one of the plurality of clusters; and the access strategy is adopted to access the terminals in at least one cluster to the target low-orbit service satellite in at least one candidate low-orbit service satellite, so that the terminals possibly having the inter-beam interference are divided into the same cluster, the terminals in the cluster are pertinently accessed to the corresponding low-orbit service satellite by adopting the corresponding access strategy according to the types of the terminals, a large number of terminals are prevented from being accessed to the same low-orbit service satellite, and the inter-beam interference is effectively reduced.

Description

Terminal access method and device

Technical Field

The disclosure relates to the technical field of satellite communication, and in particular relates to a terminal access method and device.

Background

In a low-orbit satellite communication system, which mainly comprises a satellite constellation deployed at an orbit height of 500-2000 Km, gateway stations of ground sections and terminals, the terminals need to access low-orbit service satellites for communication.

In the related art, in order to obtain a higher link budget, an access mode of a nearest satellite is generally adopted to access a terminal on the ground to a low-orbit service satellite, but the access mode may cause a large number of terminals to access the same low-orbit service satellite, which may cause inter-beam interference.

Disclosure of Invention

The present disclosure aims to solve, at least to some extent, one of the technical problems in the related art.

The present disclosure provides a terminal access method and apparatus, by which a plurality of terminals are clustered by distances between the plurality of terminals, so that terminals that may have inter-beam interference are divided into the same cluster, and the terminals in the cluster are pertinently accessed to corresponding low-orbit service satellites by adopting corresponding access policies according to types of the terminals, thereby avoiding a large number of terminals from accessing to the same low-orbit service satellite, and effectively reducing inter-beam interference.

An embodiment of a first aspect of the present disclosure provides a terminal access method, including: acquiring distances among a plurality of terminals, and clustering the plurality of terminals according to the distances among the plurality of terminals to obtain a plurality of clusters; determining an access strategy corresponding to the type according to the type of at least one terminal in at least one of the plurality of clusters; and accessing the terminal in the at least one cluster to a target low-orbit service satellite in at least one candidate low-orbit service satellite by adopting the access strategy.

The terminal access method is applied to a gateway station, and a plurality of clusters are obtained by acquiring the distances among a plurality of terminals and clustering the plurality of terminals according to the distances among the plurality of terminals; determining an access strategy corresponding to the type according to the type of at least one terminal in at least one of the plurality of clusters; and the access strategy is adopted to access the terminals in the at least one cluster to the target low-orbit service satellite in the at least one candidate low-orbit service satellite, so that the terminals are clustered according to the distance among the terminals, the terminals possibly having the inter-beam interference are divided into the same cluster, and the terminals in the cluster are accessed to the corresponding low-orbit service satellite according to the type of the terminals by adopting the corresponding access strategy, thereby avoiding a large number of terminals from being accessed to the same low-orbit service satellite and effectively reducing the inter-beam interference.

An embodiment of a second aspect of the present disclosure proposes another terminal access method applied to a target low-orbit service satellite, including: receiving an access request of a target terminal sent by a gateway station; and responding to the access request, accessing the terminal in the at least one cluster to the target low-orbit service satellite, wherein the target low-orbit service satellite is obtained by determining an access strategy corresponding to the type according to the type of the at least one terminal in the cluster where the target terminal is located, determining according to the access strategy, acquiring the distance between a plurality of terminals, and clustering the plurality of terminals according to the distance between the plurality of terminals.

An embodiment of a third aspect of the present disclosure provides another terminal access method, applied to a target terminal, including: and sending an access request to a gateway station, wherein the access request is used for determining an access strategy corresponding to the type according to the type of at least one terminal in a cluster where the target terminal is located, accessing the terminal in the cluster to a target low-orbit service satellite in at least one candidate low-orbit service satellite by adopting the access strategy, and the cluster is obtained by acquiring the distance between a plurality of terminals and clustering the plurality of terminals according to the distance between the plurality of terminals.

An embodiment of a fourth aspect of the present disclosure provides a terminal access device, applied to a gateway station, including: the acquisition module is used for acquiring the distances among the plurality of terminals and clustering the plurality of terminals according to the distances among the plurality of terminals to obtain a plurality of clusters; a determining module, configured to determine an access policy corresponding to a type of at least one terminal in at least one of the multiple clusters according to the type of the at least one terminal; and the access module is used for accessing the terminal in the at least one cluster to a target low-orbit service satellite in at least one candidate low-orbit service satellite by adopting the access strategy.

Embodiments of a fifth aspect of the present disclosure provide another terminal access device, applied to a target low-orbit service satellite, comprising: the receiving module is used for receiving the access request of the target terminal sent by the gateway station; and the access module is used for responding to the access request and accessing the terminal in the at least one cluster to the target low-orbit service satellite, wherein the target low-orbit service satellite is obtained by determining an access strategy corresponding to the type according to the type of at least one terminal in the cluster where the target terminal is located, determining according to the access strategy, acquiring the distance between a plurality of terminals, and clustering the plurality of terminals according to the distance between the plurality of terminals.

An embodiment of a sixth aspect of the present disclosure proposes another terminal access device, applied to a target terminal, including: and the sending module is used for sending an access request to the gateway station, wherein the access request is used for determining an access strategy corresponding to the type according to the type of at least one terminal in a cluster where the target terminal is located, the terminal in the cluster is accessed to the target low-orbit service satellite in at least one candidate low-orbit service satellite by adopting the access strategy, and the cluster is obtained by acquiring the distance between a plurality of terminals and clustering the plurality of terminals according to the distance between the plurality of terminals.

An embodiment of a seventh aspect of the present disclosure proposes an electronic device, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor, where the processor executes the computer program to implement a terminal access method according to an embodiment of the first aspect of the present disclosure, or implement a terminal access method according to an embodiment of the second aspect of the present disclosure, or implement a terminal access method according to an embodiment of the third aspect of the present disclosure.

An eighth aspect of the present disclosure proposes a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements a terminal access method according to an embodiment of the first aspect of the present disclosure, or implements a terminal access method according to an embodiment of the second aspect of the present disclosure, or implements a terminal access method according to an embodiment of the third aspect of the present disclosure.

An embodiment of a ninth aspect of the present disclosure proposes a computer program product, which when executed by an instruction processor in the computer program product, implements a terminal access method according to an embodiment of the first aspect of the present disclosure, or implements a terminal access method according to an embodiment of the second aspect of the present disclosure, or implements a terminal access method according to an embodiment of the third aspect of the present disclosure.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

Drawings

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a flow chart of a terminal access method provided in an embodiment of the disclosure;

fig. 2 is a schematic diagram of multiple terminal clustering provided in an embodiment of the present disclosure;

fig. 3 is a flowchart of another terminal access method according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of NOMA groups within the same cluster provided by embodiments of the present disclosure;

fig. 5 is a flowchart of another terminal access method according to an embodiment of the present disclosure;

fig. 6 is a flowchart of another terminal access method according to an embodiment of the present disclosure;

fig. 7 is a flowchart of another terminal access method according to an embodiment of the present disclosure;

fig. 8 is a flowchart of another terminal access method according to an embodiment of the present disclosure;

fig. 9 is a flowchart of another terminal access method according to an embodiment of the present disclosure;

Fig. 10 is a flowchart of another terminal access method according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a terminal access device according to an embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of another terminal access device according to an embodiment of the present disclosure;

fig. 13 is a schematic structural diagram of another terminal access device according to an embodiment of the present disclosure;

fig. 14 is a block diagram illustrating an electronic device for terminal access, according to an example embodiment.

Detailed Description

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.

In the related art, a low-orbit satellite network, such as the Iridium, has low transmission rate and small number of satellites, and a terminal on the ground can only see a small number of satellites, and generally adopts an access mode of a nearest satellite, so that a higher link budget is expected to be obtained. In the aspect of user terminal access, the access strategies of the latest satellite, such as longest service time access, load balancing access and the like are included. The longest service time access strategy refers to selecting the satellite access with the longest service time in consideration of the limited overhead time of the low orbit satellite, and reducing the satellite switching frequency. The load balancing access strategy refers to that the terminal accesses to a satellite with the minimum service load in the visible satellite set, more transmission resources are expected to be obtained, and load balancing of a plurality of satellites is achieved. A new generation of large-scale low-orbit satellite networks, such as Starlink, oneWeb, feature a stereoscopic multi-layer large-scale deployment, with a significant increase in the number of satellites that are simultaneously visible to the terminal. In a large-scale low-orbit satellite network, the complex interference among multi-satellite multi-beams is a difficult problem to be solved in a urgent need caused by the access requirement of broadband users and the dense topological characteristics.

In the related art, the terminal access strategy only considers the problem of beam interference caused by that a large number of user terminals on the ground are accessed to a plurality of low-orbit satellite nodes from the aspect of self access performance improvement or satellite node load balancing, but not from the system level of the low-orbit satellite network. In addition, the existing terminal access policies do not take into account the heterogeneous nature of the low-orbit satellite network terminals.

Therefore, in view of the above problems, the present disclosure proposes a terminal access method and apparatus. It should be noted that, the terminal access method of the embodiment of the present disclosure may be applied to a gateway station, where the gateway station is a data center node of a satellite communication system, is responsible for distributing and collecting satellite communication service data, and may complete exchange of internal data of the satellite communication network and data routing of an external network, and simultaneously has network management and operation control functions, and is responsible for completing whole network resource scheduling, system device management and terminal service management.

The following describes a terminal access method and apparatus according to an embodiment of the present disclosure with reference to the accompanying drawings.

Fig. 1 is a flowchart of a terminal access method according to an embodiment of the present disclosure.

As shown in fig. 1, the terminal access method may include the steps of:

Step 101, obtaining distances among a plurality of terminals, and clustering the plurality of terminals according to the distances among the plurality of terminals to obtain a plurality of clusters.

In an embodiment of the present disclosure, the plurality of terminals may be terminals of a low-orbit satellite network service, and the plurality of terminals may include: a Hand-Held Terminal (HT) for omni-directional transceiving and a Phased array Terminal (PT) for directional transceiving.

In order to place terminals that may have inter-beam interference in the same cluster, as an example, position information of a plurality of terminals may be acquired through a low-orbit satellite network, the position information of the plurality of terminals may be calculated to obtain distances between the plurality of terminals, and the plurality of terminals may be clustered according to the distances between the plurality of terminals to obtain a plurality of clusters.

As shown in fig. 2, a plurality of terminals on the ground are clustered according to distances to obtain a plurality of clusters, where it is noted that HT and PT may exist simultaneously, multiple PT may exist simultaneously, or multiple HT may exist within the same cluster.

And 102, determining an access strategy corresponding to the type according to the type of at least one terminal in at least one of the plurality of clusters.

In order to reduce the inter-beam interference, as a possible implementation manner, for at least one terminal within any one of the plurality of clusters, an access policy corresponding to the type is determined according to the type of the at least one terminal. It should be noted that different types correspond to different access policies.

As another possible implementation manner, for terminals in at least two and not all of the plurality of clusters, an access policy corresponding to the type is determined according to the type of the terminals in the at least two and not all of the clusters.

And 103, accessing the terminal in at least one cluster to a target low-orbit service satellite in at least one candidate low-orbit service satellite by adopting an access strategy.

Further, an access policy corresponding to the type of terminal may be employed to access the corresponding terminal to the corresponding target low-orbit service satellite.

In summary, a plurality of clusters are obtained by acquiring distances between a plurality of terminals and clustering the plurality of terminals according to the distances between the plurality of terminals; determining an access strategy corresponding to the type according to the type of at least one terminal in at least one of the plurality of clusters; and the terminals in the clusters are accessed to the target low-orbit service satellite in at least one candidate low-orbit service satellite by adopting an access strategy, so that the terminals are clustered by the distance among the terminals, the terminals possibly having the inter-beam interference are divided into the same cluster, the terminals in the clusters are accessed to the corresponding low-orbit service satellite by adopting the corresponding access strategy according to the types of the terminals, a large number of terminals are prevented from being accessed to the same low-orbit service satellite, and the inter-beam interference is effectively reduced.

As an example, the type of at least one terminal in the at least one cluster is a first terminal type, and the access policy corresponding to the first terminal type includes: when the number of terminals in the cluster is less than or equal to the number of at least one candidate low-orbit service satellite, the target low-orbit service satellite is a low-orbit service satellite of which the traffic load is less than the set threshold and which is not accessed by the terminals of the first terminal type in the at least one candidate low-orbit service satellite, the access policy may be used to access the terminals in the at least one cluster to the target low-orbit service satellite of the at least one candidate low-orbit service satellite, as will be described in detail below in connection with fig. 3.

Fig. 3 is a flowchart of another terminal access method according to an embodiment of the present disclosure.

As shown in fig. 3, the terminal access method may include the steps of:

step 301, obtaining distances between a plurality of terminals, and clustering the plurality of terminals according to the distances between the plurality of terminals to obtain a plurality of clusters.

In step 302, in response to the type of at least one terminal in the at least one cluster being a first terminal type, an access policy corresponding to the first terminal type is determined.

The access policy corresponding to the first terminal type includes: when the number of terminals in the cluster is less than or equal to the number of at least one candidate low-orbit service satellite, the target low-orbit service satellite is a low-orbit service satellite of which the traffic load in the at least one candidate low-orbit service satellite is less than a set threshold and which is not accessed by the terminals of the first terminal type.

As an example, when the number of terminals in the cluster is less than or equal to the number of at least one candidate low-orbit service satellite, the target low-orbit service satellite may be a low-orbit service satellite of the at least one candidate low-orbit service satellite that has the least traffic load and is not accessed by terminals of the first terminal type.

For example, the type of at least one terminal in any cluster is PT type, i.e. at least one terminal in any cluster is PT, and the access policy corresponding to the PT type includes: when the number of terminals in the cluster is less than or equal to the number of at least one candidate low-orbit service satellite, the target low-orbit service satellite is a low-orbit service satellite which has a traffic load less than a set threshold value in the at least one candidate low-orbit service satellite and is not accessed by other PT type terminals.

For another example, the types of the terminals in the multiple clusters and not all clusters are PT types, that is, the terminals in the multiple clusters are PT, and the access policy corresponding to the PT types includes: the number of terminals in the plurality of clusters is less than or equal to the number of at least one candidate low-orbit service satellite, and the target low-orbit service satellite is a low-orbit service satellite which has the smallest traffic load among the at least one candidate low-orbit service satellite and is not accessed by other PT-type terminals.

Step 303, obtaining a first number of terminals in at least one cluster and a second number of at least one candidate low-orbit service satellite.

As a first possible implementation, the number of terminals in any cluster and the at least one candidate low-orbit service satellite may be counted to obtain a first number of terminals in any cluster and a second number of at least one candidate low-orbit service satellite.

As a second possible implementation, the number of terminals and the at least one candidate low-orbit service satellite in the plurality of clusters and not all clusters may be counted to obtain a first number of terminals and a second number of at least one candidate low-orbit service satellite in the plurality of clusters.

Step 304, determining a target low-orbit service satellite for any terminal in at least one cluster, if the first number is less than or equal to the second number.

The target low-orbit service satellite is a low-orbit service satellite which has a service load smaller than a set threshold value in at least one candidate low-orbit service satellite and is not accessed by the terminal of the first terminal type.

Further, the first number and the second number are compared, and in the case that the first number is less than or equal to the second number, as a first possible implementation manner, in the case that the first possible implementation manner of step 303 is adopted for determination, any terminal in any cluster in step 303 may be used as a target low-orbit service satellite to be accessed by any terminal, where a traffic load in at least one candidate low-orbit service satellite is less than a set threshold and is not accessed by a terminal of the first terminal type.

As a second possible implementation manner, for a plurality of terminals in a plurality of clusters and not all clusters, a low-orbit service satellite, of which the traffic load is smaller than a set threshold and which is not accessed by a terminal of the first terminal type, in at least one candidate low-orbit service satellite is used as a target low-orbit service satellite to be accessed by the plurality of terminals.

And step 305, accessing the terminal in at least one cluster to the target low-orbit service satellite.

Further, as a first possible implementation manner, in the case of determining the first possible implementation manner of step 303 and the first possible implementation manner of step 304, any terminal in any cluster in step 304 is accessed to a corresponding target low-orbit service satellite. In addition, it should be noted that after any terminal is connected to a corresponding target low-orbit service satellite, the service load of the target low-orbit service satellite can be updated, and the target low-orbit service satellite is deleted from at least one candidate low-orbit service satellite, so as to avoid that a plurality of terminals in the same cluster are connected to the same low-orbit service satellite, and effectively reduce the interference between beams.

That is, if a plurality of PTs are contained in the same cluster, if the number of PTs is And if the number of the service satellites is not greater than the number of the service satellites, sequentially performing satellite access on each PT in the cluster, wherein the current load of each PT is smaller than a set threshold value and is not accessed by other PT, updating the service load of the satellite after the PT is accessed, and deleting the satellite from the satellite set.

Since PTs have directional reception capability, the main lobe direction of the reception beam of each PT is directed to a different satellite. For the PT in each cluster, the downlink interference from other satellites to other PTs in the cluster is located on the side lobes of the receive beam, effectively reducing the inter-beam interference, as shown in fig. 4.

As a second possible implementation, a plurality of terminals in a plurality of, but not all, clusters are accessed to corresponding target low-orbit service satellites.

It should be noted that, the execution of step 301 may be implemented in any manner in each embodiment of the disclosure, which is not limited to this embodiment, and is not repeated herein.

Summarizing, by obtaining a first number of terminals in at least one cluster and a second number of at least one candidate low-orbit service satellite; determining a target low-orbit service satellite for the terminals in at least one cluster under the condition that the first number is smaller than or equal to the second number, wherein the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than a set threshold value in at least one candidate low-orbit service satellite and is not accessed by the terminals of the first terminal type; and accessing the terminals in at least one cluster to the target low-orbit service satellite, wherein when the type of the at least one terminal in the at least one cluster is the first terminal type, each terminal in the at least one cluster is accessed to the target low-orbit service satellite by adopting an access strategy corresponding to the first terminal type, so that each terminal is accessed to the corresponding low-orbit service satellite in a targeted manner, a large number of terminals are prevented from being accessed to the same low-orbit service satellite, and the interference among beams is effectively reduced.

As another example, the type of at least one terminal in the at least one cluster is a first terminal type, and the access policy corresponding to the first terminal type further includes: when the number of terminals in the cluster is greater than the number of at least one candidate low-orbit service satellite, the target low-orbit service satellite is a low-orbit service satellite of which the traffic load is less than the set threshold value and which is not accessed by the terminal group of the first terminal type in the at least one candidate low-orbit service satellite, the access strategy can be adopted to access the terminals in the at least one cluster to the target low-orbit service satellite of the at least one candidate low-orbit service satellite, which is described in detail below in connection with fig. 5.

Fig. 5 is a flowchart of another terminal access method according to an embodiment of the present disclosure.

As shown in fig. 5, the terminal access method may include the steps of:

step 501, obtaining distances between a plurality of terminals, and clustering the plurality of terminals according to the distances between the plurality of terminals to obtain a plurality of clusters.

Step 502, determining an access policy corresponding to a first terminal type in response to the type of at least one terminal in at least one cluster being the first terminal type.

The access policy corresponding to the first terminal type includes: and in response to the number of terminals in the cluster being greater than the number of low-orbit service satellites, accessing a low-orbit service satellite in which the traffic load in the at least one candidate low-orbit service satellite is less than the set threshold and which is not accessed by the terminal group of the first terminal type.

Step 503 obtains a first number of terminals in at least one cluster and a second number of at least one candidate low-orbit service satellite.

In step 504, in case the first number is larger than the second number, terminals in the at least one cluster are divided into a second number of terminal groups.

As a first possible implementation manner, in the case that the first number is greater than the second number, the terminals in any cluster are divided into a second number of terminal groups, where it is noted that the service request of each terminal group is equal to the sum of service requests of terminals in the group.

As a second possible implementation manner, in the case that the first number is greater than the second number, the terminals in the plurality of clusters are divided into a second number of terminal groups, where it is noted that the service request of each terminal group is equal to the sum of the service requests of the terminals in the group.

Step 505 determines a target low-orbit service satellite for at least one of the second number of terminal groups.

The target low-orbit service satellite is a low-orbit service satellite which has a service load smaller than a set threshold value in at least one candidate low-orbit service satellite and is not accessed by the terminal group of the first terminal type.

Further, as a first possible implementation manner, in the case of the determination using the first possible implementation manner of step 504, for any terminal group of the second number of terminal groups in any cluster in step 504, a low-orbit service satellite having a traffic load smaller than the set threshold and not accessed by the terminal group of the first terminal type among the at least one candidate low-orbit service satellite may be accessed.

As a second possible implementation, the low-orbit service satellite, of which the traffic load is less than the set threshold and which is not accessed by the terminal group of the first terminal type, among the at least one candidate low-orbit service satellite is accessible for a plurality of terminal groups of the second number of terminal groups in the plurality of clusters, if determined using the second possible implementation of step 504.

And step 506, at least one terminal group is accessed to the target low-orbit service satellite.

Further, as one possible implementation manner, in the case of determining by using the first possible implementation manner in step 504 and the first possible implementation manner in step 505, any terminal group in any cluster in step 504 and in step 505 is accessed to a corresponding target low-orbit service satellite.

As an example, after any terminal group accesses a corresponding target low-orbit service satellite, the service load of the target low-orbit service satellite is updated, and the target low-orbit service satellite is deleted from at least one candidate low-orbit service satellite, so that a plurality of terminal groups in the same cluster are avoided, and the same low-orbit service satellite is accessed, so that the interference among beams is effectively reduced.

That is, if a plurality of PTs are contained in the same cluster, if the number of PTs isClustering PT into +.>And PT groups, wherein the service request of each PT group is equal to the sum of the PT service requests in the group. Satellite access is sequentially carried out on each PT group in the cluster, and each PT group is connectedAnd entering a satellite with the current load smaller than the set threshold and which is not accessed by other PT groups, updating the service load of the satellite after the access, and deleting the satellite from the satellite set. Therefore, the terminal groups in the same cluster are pertinently connected with the corresponding low-orbit service satellites, so that the terminal groups in the same cluster are prevented from being connected with the same low-orbit service satellites, and the interference among beams is effectively reduced.

As another possible implementation manner, the second possible implementation manner in step 504 and the second possible implementation manner in step 505 are adopted to determine, where a plurality of terminal groups in a plurality of clusters may be accessed to corresponding target low-orbit service satellites.

It should be noted that, the execution of steps 501 to 503 may be implemented in any manner in each embodiment of the disclosure, which is not limited to this embodiment, and is not repeated herein.

In summary, determining an access policy corresponding to a first terminal type by regarding a type of at least one terminal in at least one of the plurality of clusters as the first terminal type; acquiring a first number of terminals in at least one cluster and a second number of at least one candidate low-orbit service satellite; dividing terminals in at least one cluster into a second number of terminal groups in case the first number is greater than the second number; determining a target low-orbit service satellite for at least one terminal group of the second number of terminal groups; at least one terminal group is accessed to the target low-orbit service satellite, so that each terminal group in the cluster is accessed to the corresponding low-orbit service satellite in a targeted manner, a large number of terminals are prevented from accessing to the same low-orbit service satellite, and the interference among beams is effectively reduced.

As an example, the types of at least one terminal in at least one cluster include a first terminal type and a second terminal type, and the terminals in any cluster are accessed to the target low-orbit service satellite by using an access policy corresponding to the first terminal type and the second terminal type, which is described in detail below in connection with fig. 6.

Fig. 6 is a flowchart of another terminal access method according to an embodiment of the present disclosure.

As shown in fig. 6, the terminal access method may include the steps of:

step 601, obtaining distances between a plurality of terminals, and clustering the plurality of terminals according to the distances between the plurality of terminals to obtain a plurality of clusters.

Step 602, for at least one cluster in the plurality of clusters, determining an access policy corresponding to the first terminal type and the second terminal type in response to the type of at least one terminal in the at least one cluster including the first terminal type and the second terminal type.

The access policy corresponding to the first terminal type and the second terminal type comprises: the target low-orbit service satellite is a low-orbit service satellite which is accessed by the terminal in the first group, has a traffic load smaller than a set threshold value and is not accessed by the second group.

In the embodiment of the present disclosure, the first terminal type may be a PT type, and the second terminal type may be an HT type, that is, at least one PT and at least one HT are included in any one of the clusters, or at least one PT and at least one HT are included in a plurality of clusters, for example, at least one HT is included in some of the clusters, at least one PT is included in some of the clusters, and at least one HT and at least PT are included in some of the clusters.

Step 603, dividing at least one terminal in at least one cluster according to the first terminal type and the second terminal type to obtain at least one first target packet.

The first target packet includes a terminal of a first terminal type and a terminal of a second terminal type.

As an example, the first target packet is a Non-orthogonal multiple access (Non-orthogonal Multiple Access, NOMA) group, where HT and PT exist simultaneously in the same cluster, and one HT and one PT may be combined into one NOMA group, and if multiple HT and multiple PT exist simultaneously in one cluster, the NOMA groups may be paired randomly until they cannot be paired.

As another example, where HT and PT are present within multiple clusters, one HT and one PT may be combined into one NOMA group, if multiple HT and multiple PT are present within multiple clusters, the NOMA groups may be paired randomly until they cannot be paired.

A target low-orbit service satellite is determined for at least one first target packet, step 604.

Wherein the target low-orbit service satellite is a low-orbit service satellite of which the traffic load is less than a set threshold value in at least one candidate low-orbit service satellite and which is not accessed by a second target packet, which may be other target packets than the first target packet.

Further, as a first possible implementation manner, for any one of the at least one first target packet in any one cluster, a low-orbit service satellite, of which the traffic load is smaller than a set threshold and which is not accessed by the second target packet, is accessed.

As a second possible implementation manner, for a plurality of first target packets, a low-orbit service satellite, of which the traffic load is smaller than a set threshold, among at least one candidate low-orbit service satellite and which is not accessed by a second target packet, the second target packet may be a target packet other than the plurality of first target packets.

Step 605, at least one first target packet is accessed to a target low-orbit service satellite.

Further, as an example, where the determination in step 604 is made using the first possible implementation, any of the targets in step 604 may be grouped and the corresponding target low-orbit service satellite is accessed.

As an example, after any first target group is accessed to the corresponding target low-orbit service satellite, the traffic load of the target low-orbit service satellite is updated; and deleting the target low-orbit service satellite from at least one candidate low-orbit service satellite to avoid that a plurality of first target packets in the same cluster access the same low-orbit service satellite, thereby effectively reducing the interference among beams.

After the at least one first target packet is accessed to the corresponding target low-orbit service satellite, the target low-orbit service satellite adopts a first transmission power to transmit first downlink data to a terminal of a first terminal type in the at least one first target packet on a transmission resource, and adopts a second transmission power to transmit second downlink data to a terminal of a second terminal type in the at least one first target packet on the transmission resource; wherein the first transmit power is greater than the second transmit power; terminals of a first terminal type in at least one first target packet receive first downlink data with a first antenna gain, and terminals of a second terminal type in at least one first target packet receive second downlink data with a second antenna gain; wherein the first antenna gain is greater than the second antenna gain.

For example, downlink data of two terminals in the same NOMA group will be sent by using the NOMA mechanism of the power domain, i.e. overlapping with different power levels on the same time-frequency resource. Since PT receives data using a phased array antenna, it has a higher receiving antenna gain, i.e., has a higher channel gain, than HT in the same cluster. In the power domain NOMA, HT with poor channel gain is regarded as a weak terminal (allocated higher power), and PT with strong channel gain is regarded as a strong terminal (allocated lower power). Meanwhile, the HT directly demodulates the superimposed data in consideration of the difference in channel gain and the difference in signal processing capability between heterogeneous terminals. The PT deploys a signal processing module for serial interference cancellation (Successive Interference Cancellation, SIC for short), firstly demodulates and eliminates HT signals in the NOMA group, and then demodulates PT data. The technical effect of combining the terminals in the same cluster into the NOMA group is that the characteristic that the channel gain and the processing capacity between heterogeneous terminals in the same cluster are different is fully utilized, the data of the two terminals are transmitted on the same time-frequency resource, and the access capacity of the low-orbit satellite network is improved. Therefore, the first target groups in the same cluster are pertinently accessed to the corresponding low-orbit service satellite, so that the condition that a plurality of first target groups in the same cluster are simultaneously accessed to the same low-orbit service satellite is avoided, and the interference among beams is effectively reduced.

As another example, a plurality of first target packets are accessed to a corresponding target low-orbit service satellite.

It should be noted that, the execution of step 601 may be implemented in any manner of each embodiment of the disclosure, which is not limited to this embodiment, and is not repeated herein.

In summary, determining, by for at least one of the plurality of clusters, an access policy corresponding to the first terminal type and the second terminal type in response to the type of at least one terminal in the at least one cluster including the first terminal type and the second terminal type; dividing at least one terminal in at least one cluster according to the first terminal type and the second terminal type to obtain at least one first target packet; determining a target low-orbit service satellite for at least one first target packet; and (3) grouping at least one first target into a target low-orbit service satellite, wherein when the type of at least one terminal in at least one cluster comprises a first terminal type and a second terminal type, the at least one first target group in the at least one cluster is accessed into the target low-orbit service satellite by adopting an access strategy corresponding to the first terminal type and the second terminal type, thereby realizing targeted access of the target group in the cluster into the corresponding low-orbit service satellite, avoiding that a large number of terminals are simultaneously accessed into the same low-orbit service satellite, and effectively reducing the interference among beams.

As an example, the type of at least one terminal in the at least one cluster is a second terminal type, and the terminal in the at least one cluster is accessed to a target low-orbit service satellite in the at least one candidate low-orbit service satellite by using an access policy corresponding to the second terminal type, which is described in detail below in connection with fig. 7.

Fig. 7 is a flowchart of another terminal access method according to an embodiment of the present disclosure.

As shown in fig. 7, the terminal access method may include the steps of:

in step 701, distances between a plurality of terminals are obtained, and the plurality of terminals are clustered according to the distances between the plurality of terminals, so as to obtain a plurality of clusters.

Step 702, for at least one cluster in the plurality of clusters, determining an access policy corresponding to the second terminal type in response to the type of at least one terminal in the at least one cluster being the second terminal type.

The access policy corresponding to the second terminal type includes: the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than a set threshold value in at least one candidate low-orbit service satellite and is not accessed by the terminal of the second terminal type.

As an example, the second terminal type is an HT type, that is, at least one terminal in any cluster is an HT, and the access policy corresponding to the HT type includes: for each HT in the cluster, the target low-orbit service satellite is the low-orbit service satellite of the at least one candidate low-orbit service satellite that has the least traffic load and is not accessed by other HT.

As another example, the second terminal type is an HT type, the terminals in the plurality of clusters are all HT, and the access policy corresponding to the HT type includes: for each HT in the cluster, the target low-orbit service satellite is the low-orbit service satellite of the at least one candidate low-orbit service satellite that has the least traffic load and is not accessed by other HT.

In step 703, a target low-orbit service satellite is determined for terminals of a second terminal type in the at least one cluster.

The target low-orbit service satellite is a low-orbit service satellite which has a service load smaller than a set threshold value in at least one candidate low-orbit service satellite and is not accessed by the terminal of the second terminal type.

As a possible implementation manner, for each terminal of the second terminal type in any cluster, the target low-orbit service satellite is a low-orbit service satellite with the smallest traffic load among at least one candidate low-orbit service satellite and which is not accessed by the terminal of the second terminal type.

As another possible implementation, for each terminal of the second terminal type in the plurality of clusters, the target low-orbit service satellite is a low-orbit service satellite of the at least one candidate low-orbit service satellite that has the least traffic load and is not accessed by the terminal of the second terminal type.

And step 704, accessing terminals of the second terminal type in at least one cluster to the target low-orbit service satellite.

As one possible implementation manner, in the case that the determination in step 703 is made by using the first possible implementation manner, the terminal of each second terminal type in any cluster in step 703 may be accessed to the corresponding target low-orbit service satellite.

As an example, after the terminals of the second terminal type in any cluster are accessed to the corresponding target low-orbit service satellites, the service load of the target low-orbit service satellites is updated, and the target low-orbit service satellites are deleted from at least one candidate low-orbit service satellite, so that a plurality of terminals in the same cluster are prevented from accessing the same low-orbit service satellite, and the interference among beams is effectively reduced.

As another possible implementation, the terminal of each second terminal type in the plurality of clusters is accessed to the target low-orbit service satellite.

It should be noted that, the execution process of step 701 may be implemented in any manner of each embodiment of the disclosure, which is not limited to this embodiment, and is not repeated herein.

In summary, determining, by for at least one of the plurality of clusters, an access policy corresponding to a second terminal type in response to the type of at least one terminal in the at least one cluster being the second terminal type; determining a target low-orbit service satellite for terminals of each second terminal type in at least one cluster; and accessing the terminals of the second terminal type in at least one cluster to the target low-orbit service satellite, thereby realizing targeted access of the terminals of the second terminal type in the cluster to the corresponding low-orbit service satellite, avoiding that a large number of terminals are simultaneously accessed to the same low-orbit service satellite, and effectively reducing the interference among beams.

On the basis of any embodiment of the present disclosure, an exemplary description is given of any one of a plurality of clusters, and an implementation flow of the embodiment of the present disclosure may be as shown in fig. 8, and mainly includes the following steps:

1. collecting quantity information of heterogeneous user terminals in current coverage area through low-orbit satellite networkPosition information->Type information and request traffic information +.>Determining the number of serviceable satellites +.>；

2. Based on terminal location informationClustering heterogeneous terminals, and dividing the heterogeneous terminals into C clusters;

3. for clusters containing both HT and PT, combining HT and PT into NOMA groups, each NOMA group containing one HT and one PT, and marking HT in each NOMA group as i and PT as j, regarding one NOMA group as an equivalent PT in the subsequent access flow, wherein the equivalent PT service request amount is the sum of the service request amounts of the NOMA groups,；

4. traversing the C clusters, and executing a terminal access flow for each cluster C;

(1) Step 4.1: for satellitesInitializing the traffic load of the satellite to +.>Initializing a cluster index c=0;

（2）c++；

(3) Step 4.2: if the number of PTs in cluster cIs greater than the number of service satellites>PT in cluster c was clustered as +.>And (5) PT groups, or else, not performing clustering processing. Each PT (PT group) in the cluster c is accessed to the satellite which is not currently accessed and has the smallest load, and the access flow is executed as follows:

i. For the current satellite load setSequencing;

ii. Selecting PT or PT group from PT (or PT group) set in cluster cAccessing to the satellite s with the minimum current load, and updating the load of the satellite s>And deleting the satellite s in the satellite set;

iii) repeating steps i) and ii) until the PT (PT group) set is empty;

(4) Step 4.3: each HT in the cluster c is accessed to the satellite with the minimum current load, and the access flow is executed as follows:

i. for the current satellite load setSequencing;

ii. Selecting HT i from HT set in cluster c, accessing to satellite s with minimum current load, and updating load of satellite sAnd deleting the satellite s in the satellite set;

iii) repeating steps i) and ii) until the HT set is empty.

(5) Judging whether C is equal to C, if not, returning to (2). If so, the process ends.

In order to implement the above embodiments, the present disclosure proposes another terminal access method.

Fig. 9 is a flowchart of another terminal access method according to an embodiment of the present disclosure. Embodiments of the present disclosure may be applied to target low-orbit service satellites.

As shown in fig. 9, the terminal access method may include:

step 901, receiving an access request of a target terminal sent by a gateway station.

As one example, the gateway station may transmit an access request for a target terminal to a target low-orbit service satellite that receives the access request for the target terminal transmitted by the gateway station.

In response to the access request, the terminal in at least one cluster is accessed to the target low-orbit service satellite, step 902.

The target low-orbit service satellite is obtained by determining an access strategy corresponding to a type according to the type of at least one terminal in a cluster where the target terminal is located, determining according to the access strategy, acquiring the distance between a plurality of terminals, and clustering the plurality of terminals according to the distance between the plurality of terminals.

As one example, in response to the access request, a terminal in at least one cluster may be accessed to a target low-orbit service satellite. The target low-orbit service satellite is obtained by determining an access strategy corresponding to a type according to the type of at least one terminal in a cluster where the target terminal is located, determining according to the access strategy, acquiring the distance between a plurality of terminals, and clustering the plurality of terminals according to the distance between the plurality of terminals.

According to the terminal access method, the access request of the target terminal sent by the gateway station is received, and the terminal in at least one cluster is accessed to the target low-orbit service satellite in response to the access request, so that the plurality of terminals are clustered through the distance among the plurality of terminals, the terminals possibly having the inter-beam interference are divided into the same cluster, the terminals in the cluster are pertinently accessed to the corresponding low-orbit service satellite by adopting the corresponding access strategy according to the type of the terminal, a large number of terminals are prevented from being accessed to the same low-orbit service satellite, and the inter-beam interference is effectively reduced.

Fig. 10 is a flowchart of another terminal access method according to an embodiment of the present disclosure. The embodiment of the disclosure can be applied to the target terminal.

As shown in fig. 10, the terminal access method may include:

step 1001, an access request is sent to a gateway station.

The access request is used for determining an access strategy corresponding to the type according to the type of at least one terminal in the cluster where the target terminal is located, the terminal in the cluster is accessed to the target low-orbit service satellite in at least one candidate low-orbit service satellite by adopting the access strategy, the cluster is obtained by acquiring the distance between a plurality of terminals and clustering the plurality of terminals according to the distance between the plurality of terminals.

According to the terminal access method, the access request is sent to the gateway station, the access request is used for determining the access strategy corresponding to the type according to the type of at least one terminal in the cluster where the target terminal is located, the terminal in the cluster is accessed to the target low-orbit service satellite in the at least one candidate low-orbit service satellite by adopting the access strategy, the cluster is obtained by acquiring the distance between a plurality of terminals and clustering the plurality of terminals according to the distance between the plurality of terminals, and therefore the plurality of terminals are clustered through the distance between the plurality of terminals, the terminals possibly existing inter-beam interference are divided into the same cluster, and the terminals in the cluster are pertinently accessed to the corresponding low-orbit service satellite by adopting the corresponding access strategy according to the type of the terminal, so that a large number of terminals are prevented from accessing to the same low-orbit service satellite, and the inter-beam interference is effectively reduced.

It should be noted that the explanation of the embodiments of the terminal access method in fig. 1 to 8 is also applicable to the terminal access method in the embodiments of fig. 9 and 10, and will not be repeated here.

In order to implement the embodiments described in fig. 1 to 8, the embodiments of the present disclosure propose a terminal access device.

Fig. 11 is a schematic structural diagram of a terminal access device according to an embodiment of the present disclosure. The terminal access device of the embodiment of the disclosure can be applied to a gateway station.

As shown in fig. 11, the terminal access device 1100 includes: an acquisition module 1110, a determination module 1120, and an access module 1130.

The acquiring module 1110 is configured to acquire distances between a plurality of terminals, and cluster the plurality of terminals according to the distances between the plurality of terminals to obtain a plurality of clusters; a determining module 1120, configured to determine an access policy corresponding to a type according to a type of at least one terminal in at least one of the multiple clusters; an access module 1130 for accessing the terminal in the at least one cluster to a target low-orbit service satellite of the at least one candidate low-orbit service satellite using an access policy.

As a possible implementation manner of the embodiments of the present disclosure, a type of at least one terminal in at least one cluster is a first terminal type, and an access policy corresponding to the first terminal type includes: when the number of terminals in the cluster is less than or equal to the number of at least one candidate low-orbit service satellite, the target low-orbit service satellite is a low-orbit service satellite of which the traffic load in the at least one candidate low-orbit service satellite is less than a set threshold and which is not accessed by the terminals of the first terminal type.

As one possible implementation of an embodiment of the present disclosure, an access module 1130 is configured to obtain a first number of terminals in at least one cluster and a second number of at least one candidate low-orbit service satellite; determining a target low-orbit service satellite for the terminals in at least one cluster under the condition that the first number is smaller than or equal to the second number, wherein the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than a set threshold value in at least one candidate low-orbit service satellite and is not accessed by the terminals of the first terminal type; and accessing at least one terminal into the target low-orbit service satellite.

As a possible implementation manner of the embodiments of the present disclosure, the access policy corresponding to the first terminal type further includes: when the number of terminals in the cluster is greater than the number of at least one candidate low-orbit service satellite, the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than a set threshold value in the at least one candidate low-orbit service satellite and is not accessed by the terminal group of the first terminal type.

As one possible implementation of an embodiment of the present disclosure, the access module 1130 is configured to divide the terminals in the at least one cluster into a second number of terminal groups if the first number is greater than the second number; determining a target low-orbit service satellite for at least one terminal group in the second number of terminal groups, wherein the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than a set threshold value in at least one candidate low-orbit service satellite and is not accessed by the terminal group of the first terminal type; and accessing at least one terminal group into the target low-orbit service satellite.

As a possible implementation manner of the embodiments of the present disclosure, the type of at least one terminal in at least one cluster includes a first terminal type and a second terminal type, and the access policy corresponding to the first terminal type and the second terminal type includes: the target low-orbit service satellite is a low-orbit service satellite which is accessed by the terminal in the first group, has a traffic load smaller than a set threshold value and is not accessed by the second group.

As a possible implementation manner of the embodiment of the present disclosure, the access module 1130 is configured to divide at least one terminal in at least one cluster according to a first terminal type and a second terminal type to obtain at least one first target packet, where the first target packet includes a terminal of the first terminal type and a terminal of the second terminal type; determining a target low-orbit service satellite for at least one first target packet, wherein the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than a set threshold value and is not accessed by a second target packet in at least one candidate low-orbit service satellite; and at least one first target group is accessed to the target low-orbit service satellite.

As a possible implementation manner of the embodiments of the present disclosure, a target low-orbit service satellite uses a first transmission power to transmit first downlink data to a terminal of a first terminal type in at least one first target packet on a transmission resource, and uses a second transmission power to transmit second downlink data to a terminal of a second terminal type in at least one first target packet on the transmission resource; wherein the first transmit power is greater than the second transmit power; terminals of a first terminal type in at least one first target packet receive first downlink data with a first antenna gain, and terminals of a second terminal type in at least one first target packet receive second downlink data with a second antenna gain; wherein the first antenna gain is greater than the second antenna gain.

As a possible implementation manner of the embodiments of the present disclosure, the type of at least one terminal in at least one cluster is a second terminal type, and the access policy corresponding to the second terminal type includes: the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than a set threshold value in at least one candidate low-orbit service satellite and is not accessed by the terminal of the second terminal type.

As a possible implementation manner of the embodiment of the present disclosure, the access module 1130 is configured to determine, for a terminal of a second terminal type in at least one cluster, a target low-orbit service satellite, where the target low-orbit service satellite is a low-orbit service satellite in at least one candidate low-orbit service satellite having a traffic load less than a set threshold and not accessed by a terminal of the second terminal type; and accessing the terminal of the second terminal type in at least one cluster to the target low-orbit service satellite.

As one possible implementation of an embodiment of the present disclosure, the terminal access device 1100 further includes: an update module and a delete module.

The updating module is used for updating the service load of the target low-orbit service satellite; and the deleting module is used for deleting the target low-orbit service satellite from the at least one candidate low-orbit service satellite.

According to the terminal access device, the plurality of terminals are clustered according to the distances among the plurality of terminals to obtain a plurality of clusters; determining an access strategy corresponding to the type according to the type of at least one terminal in at least one of the multiple clusters; and the terminals in the clusters are accessed to the target low-orbit service satellite in at least one candidate low-orbit service satellite by adopting an access strategy, so that the terminals are clustered by the distance among the terminals, the terminals possibly having the inter-beam interference are divided into the same cluster, the terminals in the clusters are accessed to the corresponding low-orbit service satellite by adopting the corresponding access strategy according to the types of the terminals, a large number of terminals are prevented from being accessed to the same low-orbit service satellite, and the inter-beam interference is effectively reduced.

In order to implement the embodiment described in fig. 9, an embodiment of the disclosure proposes a terminal access device.

Fig. 12 is a schematic structural diagram of another terminal access device according to an embodiment of the present disclosure. The terminal access device of the embodiment of the disclosure can be applied to a target low-orbit service satellite.

As shown in fig. 12, the terminal access device 1200 includes: a receiving module 1210 and an access module 1220.

Wherein, the receiving module 1210 is configured to receive an access request of a target terminal sent by an gateway station; the access module 1220 is configured to access, in response to an access request, a terminal in at least one cluster to a target low-orbit service satellite, where the target low-orbit service satellite is obtained by determining an access policy corresponding to a type of at least one terminal in a cluster where the target terminal is located, determining according to the access policy, where the at least one cluster is obtained by obtaining distances between a plurality of terminals, and clustering the plurality of terminals according to the distances between the plurality of terminals.

According to the terminal access device, the access request of the target terminal sent by the gateway station is received, and the terminal in at least one cluster is accessed to the target low-orbit service satellite in response to the access request, so that the plurality of terminals are clustered through the distance among the plurality of terminals, the terminals possibly having the inter-beam interference are divided into the same cluster, the terminals in the cluster are pertinently accessed to the corresponding low-orbit service satellite by adopting the corresponding access strategy according to the type of the terminal, a large number of terminals are prevented from being accessed to the same low-orbit service satellite, and the inter-beam interference is effectively reduced.

In order to implement the embodiment described in fig. 10, an embodiment of the disclosure proposes a terminal access device.

Fig. 13 is a schematic structural diagram of another terminal access device according to an embodiment of the present disclosure. The terminal access device of the embodiment of the disclosure can be applied to a target terminal.

As shown in fig. 13, the terminal access device 1300 includes: and a transmitting module 1310.

The sending module 1310 is configured to send an access request to the gateway station, where the access request is configured to determine an access policy corresponding to a type according to the type of at least one terminal in a cluster where the target terminal is located, and access the terminal in the cluster to the target low-orbit service satellite in the at least one candidate low-orbit service satellite by using the access policy, where the cluster is obtained by obtaining distances between a plurality of terminals and clustering the plurality of terminals according to the distances between the plurality of terminals.

According to the terminal access device, the access request is sent to the gateway station, wherein the access request is used for determining an access strategy corresponding to the type according to the type of at least one terminal in the cluster where the target terminal is located, the terminal in the cluster is accessed to the target low-orbit service satellite in the at least one candidate low-orbit service satellite by adopting the access strategy, the cluster is obtained by acquiring the distance between a plurality of terminals and clustering the plurality of terminals according to the distance between the plurality of terminals, and therefore the plurality of terminals are clustered through the distance between the plurality of terminals, the terminals possibly existing inter-beam interference are divided into the same cluster, and the terminals in the cluster are pertinently accessed to the corresponding low-orbit service satellite by adopting the corresponding access strategy according to the type of the terminal, so that a large number of terminals are prevented from accessing to the same low-orbit service satellite, and the inter-beam interference is effectively reduced. It should be noted that the foregoing explanation of the embodiment of the terminal access method is also applicable to the terminal access device of this embodiment, and will not be repeated herein.

In order to implement the above embodiment, the present application further proposes an electronic device, as shown in fig. 14, and fig. 14 is a block diagram of an electronic device for terminal access according to an exemplary embodiment.

As shown in fig. 14, the electronic device 1400 includes:

a memory 1410 and a processor 1420, a bus 1430 connecting the different components (including the memory 1410 and the processor 1420), the memory 1410 storing a computer program which when executed by the processor 1420 implements the terminal access method according to the embodiments of the disclosure.

Bus 1430 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. By way of example, and not limitation, such architectures include Industry Standard Architecture (ISA) bus, micro channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

Electronic device 1400 typically includes a variety of electronic device-readable media. Such media can be any available media that is accessible by the electronic device 1400 and includes both volatile and nonvolatile media, removable and non-removable media.

Memory 1410 may also include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 1440 and/or cache memory 1450. Electronic device 1400 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 1460 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 14, commonly referred to as a "hard disk drive"). Although not shown in fig. 14, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In such cases, each drive may be coupled to bus 1430 via one or more data medium interfaces. Memory 1410 may include at least one program product having a set (e.g., at least one) of program modules configured to carry out the functions of the various embodiments of the disclosure.

A program/utility 1480 having a set (at least one) of program modules 1470 may be stored in, for example, memory 1410, such program modules 1470 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment. Program modules 1470 generally perform the functions and/or methodologies in the embodiments described in this disclosure.

The electronic device 1400 may also communicate with one or more external devices 1490 (e.g., keyboard, pointing device, display, etc.), one or more devices that enable a user to interact with the electronic device 1400, and/or any devices (e.g., network card, modem, etc.) that enable the electronic device 1400 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 1492. Also, electronic device 1400 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 1493. As shown in fig. 14, the network adapter 1493 communicates with other modules of the electronic device 1400 via the bus 1430. It should be appreciated that although not shown in fig. 14, other hardware and/or software modules may be used in connection with electronic device 1400, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.

The processor 1420 executes various functional applications and data processing by executing programs stored in the memory 1410.

It should be noted that, the implementation process and the technical principle of the electronic device in this embodiment refer to the foregoing explanation of the terminal access in this embodiment of the disclosure, and are not repeated herein.

In order to implement the above embodiment, the present application further proposes a computer readable storage medium having a computer program stored thereon, which when executed by a processor implements the terminal access method described in the above embodiment.

In order to implement the above embodiments, the present disclosure also provides a computer program product, which when executed by an instruction processor in the computer program product, performs the terminal access method described in the above embodiments.

In the description of this specification, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims

1. A terminal access method, applied to a gateway station, comprising:

acquiring distances among a plurality of terminals, and clustering the plurality of terminals according to the distances among the plurality of terminals to obtain a plurality of clusters;

determining an access strategy corresponding to the type according to the type of at least one terminal in at least one of the plurality of clusters;

adopting the access strategy to access the terminal in the at least one cluster to a target low-orbit service satellite in at least one candidate low-orbit service satellite;

the accessing the terminal in the at least one cluster to the target low-orbit service satellite in the at least one candidate low-orbit service satellite by adopting the access strategy comprises the following steps:

when the type of at least one terminal in at least one cluster is a first terminal type, acquiring a first number of terminals in the at least one cluster and a second number of the at least one candidate low-orbit service satellites;

Determining the target low-orbit service satellite for the terminals in the at least one cluster, wherein the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than a set threshold and is not accessed by the terminals of the first terminal type in the at least one candidate low-orbit service satellite;

dividing terminals in the at least one cluster into the second number of terminal groups if the first number is greater than the second number;

determining the target low-orbit service satellite for at least one terminal group in the second number of terminal groups, wherein the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than the set threshold and is not accessed by the terminal group of the first terminal type in the at least one candidate low-orbit service satellite

Accessing a terminal in the at least one cluster to the target low-orbit service satellite;

determining the target low-orbit service satellite aiming at a terminal of a second terminal type in the at least one cluster, wherein the target low-orbit service satellite is a low-orbit service satellite which has a service load smaller than the set threshold value in the at least one candidate low-orbit service satellite and is not accessed by the terminal of the second terminal type;

And accessing the terminal of the second terminal type in the at least one cluster to the target low-orbit service satellite.

2. The method of claim 1, wherein the access policy corresponding to the first terminal type comprises:

and when the number of the terminals in the cluster is smaller than or equal to the number of the at least one candidate low-orbit service satellite, the target low-orbit service satellite is a low-orbit service satellite which has a service load smaller than a set threshold value in the at least one candidate low-orbit service satellite and is not accessed by the terminal of the first terminal type.

3. The method of claim 2, wherein the access policy corresponding to the first terminal type further comprises:

and when the number of the terminals in the cluster is greater than the number of the at least one candidate low-orbit service satellite, the target low-orbit service satellite is a low-orbit service satellite which has a service load smaller than the set threshold value in the at least one candidate low-orbit service satellite and is not accessed by the terminal group of the first terminal type.

4. The method of claim 1, wherein the type of at least one terminal in the at least one cluster comprises a first terminal type and a second terminal type,

The access policy corresponding to the first terminal type and the second terminal type includes:

the target low-orbit service satellite is a low-orbit service satellite which is accessed by the terminal in the first group, has a service load smaller than a set threshold value and is not accessed by the second group.

5. The method of claim 4, wherein said employing said access policy to access a terminal in said at least one cluster to a target low-orbit service satellite of at least one candidate low-orbit service satellite comprises:

dividing terminals in the at least one cluster according to the first terminal type and the second terminal type to obtain at least one first target packet, wherein the first target packet comprises a terminal of the first terminal type and a terminal of the second terminal type;

determining the target low-orbit service satellite aiming at the at least one first target packet, wherein the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than the set threshold value and is not accessed by a second target packet in the at least one candidate low-orbit service satellite;

And grouping the at least one first target, and accessing the target low-orbit service satellite.

6. The method of claim 4, wherein the step of determining the position of the first electrode is performed,

the target low-orbit service satellite adopts first sending power to send first downlink data to a terminal of a first terminal type in the at least one first target packet on a transmission resource, and adopts second sending power to send second downlink data to a terminal of a second terminal type in the at least one first target packet on the transmission resource; wherein the first transmit power is greater than the second transmit power;

a terminal of a first terminal type in the at least one first target packet receives the first downlink data by adopting a first antenna gain, and a terminal of a second terminal type in the at least one first target packet receives the second downlink data by adopting a second antenna gain; wherein the first antenna gain is greater than the second antenna gain.

7. The method of claim 1, wherein the type of at least one terminal in the at least one cluster is a second terminal type,

the access policy corresponding to the second terminal type includes:

The target low-orbit service satellite is a low-orbit service satellite which has a service load smaller than a set threshold value in the at least one candidate low-orbit service satellite and is not accessed by the terminal of the second terminal type.

8. The method according to any one of claims 1, 5, further comprising:

updating the service load of the target low-orbit service satellite;

deleting the target low-orbit service satellite from the at least one candidate low-orbit service satellite.

9. A terminal access method for a target low-orbit service satellite, comprising:

receiving an access request of a target terminal sent by a gateway station;

responding to the access request, accessing a terminal in at least one cluster to the target low-orbit service satellite, wherein the target low-orbit service satellite is obtained by determining an access strategy corresponding to the type according to the type of at least one terminal in the cluster where the target terminal is located, determining according to the access strategy, acquiring the distance between a plurality of terminals, and clustering the plurality of terminals according to the distance between the plurality of terminals;

Wherein accessing the terminal in the at least one cluster to the target low-orbit service satellite by adopting the access policy comprises:

when the type of at least one terminal in at least one cluster is a first terminal type, acquiring a first number of terminals in the at least one cluster and a second number of at least one candidate low-orbit service satellite;

dividing terminals in the at least one cluster into a second number of terminal groups if the first number is greater than the second number;

determining the target low-orbit service satellite for at least one terminal group in the second number of terminal groups, wherein the target low-orbit service satellite is a low-orbit service satellite which has a traffic load smaller than the set threshold and is not accessed by the terminal group of the first terminal type in the at least one candidate low-orbit service satellite;

10. A terminal access method, applied to a target terminal, comprising:

sending an access request to a gateway station, wherein the access request is used for determining an access strategy corresponding to a type of at least one terminal in a cluster where the target terminal is located, accessing the terminal in the cluster to a target low-orbit service satellite in at least one candidate low-orbit service satellite by adopting the access strategy, and the cluster is obtained by acquiring distances among a plurality of terminals and clustering the plurality of terminals according to the distances among the plurality of terminals;

wherein accessing the terminal in the cluster to a target low-orbit service satellite in the at least one candidate low-orbit service satellite by adopting the access strategy comprises:

11. A terminal access device for use in a gateway station, comprising:

the acquisition module is used for acquiring the distances among the plurality of terminals and clustering the plurality of terminals according to the distances among the plurality of terminals to obtain a plurality of clusters;

a determining module, configured to determine an access policy corresponding to a type of at least one terminal in at least one of the multiple clusters according to the type of the at least one terminal;

an access module, configured to access a terminal in the at least one cluster to a target low-orbit service satellite in at least one candidate low-orbit service satellite by adopting the access policy;

the access module is further configured to obtain a first number of terminals in at least one cluster and a second number of the at least one candidate low-orbit service satellite when the type of the at least one terminal in the at least one cluster is a first terminal type;

12. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the terminal access method according to any of claims 1-8, or the terminal access method according to claim 9, or the terminal access method according to claim 10, when the computer program is executed.

13. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the terminal access method according to any of claims 1-8, or the terminal access method according to claim 9, or the terminal access method according to claim 10.