CN114301519A - Data transmission method, device, equipment and storage medium - Google Patents

Abstract

The present application provides a data transmission method, apparatus, device and storage medium. The method includes: receiving target information to be sent by a source terminal device to a destination terminal device; the target information includes a group identifier corresponding to the destination terminal device and a flag bit of the destination end address; the flag bit of the destination end address is used to indicate the target data Whether the address of the destination terminal equipment is included; the grouping corresponding to the destination terminal equipment is obtained by grouping the terminal equipment according to the service type or user group; The group identifier of the authorized group and the group identifier corresponding to the destination terminal equipment, determine whether the destination terminal equipment is an authorized terminal equipment; if the destination terminal equipment is an authorized terminal equipment, and the satellite is located within the communicable range of the destination terminal equipment Inside, the target information is sent to the destination terminal device.

Description

Data transmission method, device, equipment and storage medium

technical field

The present application relates to satellite communication technology, and in particular, to a data transmission method, apparatus, device and storage medium.

Background technique

With the rapid development of aerospace technology, satellite has become one of the effective solutions to achieve global communication coverage. Due to the relatively low orbital altitude of low-orbit satellites, the satellite-ground link has low transmission delay, high speed and low transmission loss. Using low-orbit satellites as gateways for IoT communication is gradually becoming a trend.

When the Internet of Things communication is carried out through the earth-orbiting satellite, the following methods can be used: the source end sends the target information to be sent to the destination end to the satellite, the satellite sends the target information to the earth station corresponding to the destination end, and then the earth station corresponding to the destination end sends the target information to the satellite. The station is forwarded to the destination through the user data center. This method needs to pass through the earth station, resulting in a longer communication time. Therefore, point-to-point communication is currently used, that is, the source terminal sends the target information to be sent to the destination terminal to the satellite, and then the satellite forwards it to the destination terminal without passing through the ground station. In this way, the communication duration used in the point-to-point communication is short, and the degree of usage among users is high.

However, when a large number of users send target information to the satellite through the terminal equipment in a point-to-point manner at the same time, the communication pressure of the satellite will be greater, which will cause frame loss of some target information, resulting in data transmission failure.

SUMMARY OF THE INVENTION

The present application provides a data transmission method, device, device and storage medium, which are used to solve the problem that when a large number of users send target information to a satellite through terminal equipment at the same time, the communication pressure on the satellite is relatively large, resulting in frame loss of some target information, and data loss. Transmission failure problem.

In a first aspect, the present application provides a data transmission method, which is applied to satellites. The method includes: receiving target information to be sent by a source terminal device to a destination terminal device; the target information includes packets corresponding to the destination terminal device. identifier and the flag bit of the destination address; the flag bit of the destination address is used to indicate whether the target data includes the address of the destination terminal device; the group identifier is used to identify the corresponding destination terminal device. grouping; the grouping corresponding to the destination terminal equipment is obtained by grouping the terminal equipment according to the service type or user group; if the flag bit of the destination address indicates that the target data includes the destination address, according to the preset The stored group identifier of the authorized group and the group identifier corresponding to the destination terminal device determine whether the destination terminal device is an authorized terminal device; if the destination terminal device is an authorized terminal device, and the satellite If it is within the communicable range of the destination terminal device, the target information is sent to the destination terminal device.

In a second aspect, the present application provides a data transmission method, which is applied to an earth station. The method includes: receiving a group identifier of each authorization group in X authorization groups; the X is an integer greater than or equal to 1; When entering the communicable range of the earth station, the group identifier of each authorization group in the X authorization groups is sent to the satellite.

In a third aspect, the present application provides a data transmission method, which is applied to a satellite control center. The method includes: grouping M terminal devices according to service types or user groups to obtain Z groups; the M is greater than or equal to an integer of 1; the Z is an integer greater than or equal to 1 and less than or equal to M; determine the X authorized packets in the Z packets; the X is an integer greater than or equal to 1 and less than or equal to Z ; When the satellite enters the communicable range of the earth station corresponding to the satellite control center, the group identification of each authorized group in the X authorized groups is sent to the satellite through the earth station.

In a fourth aspect, the present application provides a data transmission method, which is applied to a terminal device. The method includes: acquiring indication information of emergency communication input by a user through the terminal device; the indication information includes an identifier of the terminal device, The identifier is used to represent the identity information of the terminal device; the indication information is sent to the ground station; wherein the ground station is used to determine the target group corresponding to the terminal device according to the identifier of the terminal device, And according to the target grouping corresponding to the terminal equipment, a control instruction is generated and sent to the satellite located within the communicable range of the ground station, the control instruction is used to instruct the terminal equipment of the non-target grouping to disconnect and send to the satellite link to information.

In a fifth aspect, the present application provides a data transmission device applied to a satellite, the device comprising: a receiving module for receiving target information to be sent by a source terminal device to a destination terminal device; the target information includes the destination terminal The group identifier corresponding to the terminal device and the flag bit of the destination address; the flag bit of the destination address is used to indicate whether the target data includes the address of the destination terminal device; the group identifier is used to identify the destination The grouping corresponding to the terminal equipment; the grouping corresponding to the terminal equipment of the destination is obtained by grouping the terminal equipment according to the service type or user group; the determining module is used for if the flag bit of the address of the destination indicates the target data Including the destination address, then according to the pre-stored group identifier of the authorized group and the group identifier corresponding to the destination terminal device, determine whether the destination terminal device is an authorized terminal device; the sending module is used for if the If the destination terminal device is an authorized terminal device, and the satellite is located within the communicable range of the destination terminal device, the target information is sent to the destination terminal device.

In a sixth aspect, the present application provides a data transmission device, which is applied to an earth station, the device comprising: a receiving module for receiving a group identifier of each authorization group in X authorization groups; the X is greater than or equal to 1 The sending module is configured to send the group identification of each authorized group in the X authorized groups to the satellite when the satellite enters the communicable range of the earth station.

In a seventh aspect, the present application provides a data transmission device applied to a satellite control center, the device comprising: a grouping module for grouping M terminal devices according to service types or user groups to obtain Z groups; the M is an integer greater than or equal to 1; the Z is an integer greater than or equal to 1 and less than or equal to M; a determination module, configured to determine X authorized groups in the Z groups; the X is greater than or Equal to 1, and an integer less than or equal to Z; the sending module is used to identify the group identification of each authorized group in the X authorized groups when the satellite enters the communicable range of the earth station corresponding to the satellite control center sent to the satellite via the earth station.

In an eighth aspect, the present application provides a data transmission device applied to a terminal device, the device comprising: an acquisition module configured to acquire indication information of emergency communication input by a user through the terminal device; the indication information includes the The identifier of the terminal device, the identifier is used to represent the identity information of the terminal device; the group corresponding to the terminal device is an unauthorized group; the sending module is used to send the indication information to the ground station; wherein, the The ground station is configured to determine the third target group corresponding to the terminal equipment according to the identification of the terminal equipment, and generate a control instruction according to the third target group corresponding to the terminal equipment and send it to the controllable device located at the ground station. A satellite within a communication range, the control instruction is used to instruct a terminal device other than the third target group to disconnect the link for sending information to the satellite.

In a ninth aspect, the present application provides an electronic device, comprising: a memory, a processor; a memory; a memory for storing executable instructions of the processor; wherein the processor is configured to implement the first aspect method.

In a tenth aspect, the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are used to implement the method of the first aspect when executed by a processor.

In an eleventh aspect, the present application provides a computer program product, including a computer program, which implements the method described in the first aspect when the computer program is executed by a processor.

The data transmission method, device, device and storage medium provided by this application receive target information to be sent by the source terminal device to the destination terminal device; the target information includes the group identifier corresponding to the destination terminal device and the flag bit of the destination address ; The flag bit of the destination address is used to indicate whether the target data includes the address of the destination terminal device; the group identifier is used to identify the corresponding grouping of the destination terminal device; the corresponding grouping of the destination terminal device is based on the service type or user group. Obtained by grouping the device; if the flag bit of the destination address indicates that the target data includes the destination address, then according to the pre-stored group identifier of the authorized group and the group identifier corresponding to the destination terminal device, determine whether the destination terminal device is authorized. Terminal equipment; if the destination terminal equipment is an authorized terminal equipment and the satellite is within the communicable range of the destination terminal equipment, the target information is sent to the destination terminal equipment. Whether the destination terminal device is an authorized terminal device is determined according to the pre-stored group identifier of the authorized group and the group identifier corresponding to the destination terminal device; if the destination terminal device is an authorized terminal device, and the satellite is located at the destination terminal device Within the communicable range, the target information is sent to the destination terminal device. Therefore, when a large number of users send target information to the satellite through the terminal device in a point-to-point manner at the same time, the target information of the authorized group is forwarded, and the unauthorized group is restricted. The grouped terminal equipment ID target information can limit the number of point-to-point communications at the same time, thereby avoiding the congestion of the satellite's delivery queue, reducing the communication pressure on the satellite, and reducing the frame loss phenomenon of the target information.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application.

FIG. 1 is an application scenario diagram provided by an embodiment of the present application;

FIG. 2 is a flowchart 1 of a data transmission method provided by an embodiment of the present application

3 is a second flowchart of a data transmission method provided by an embodiment of the present application;

FIG. 4 is a third flowchart of a data transmission method provided by an embodiment of the present application;

FIG. 5 is a fourth flowchart of a data transmission method provided by an embodiment of the present application;

6 is a schematic structural diagram of a data transmission apparatus provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a data transmission apparatus provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a data transmission apparatus provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a data transmission apparatus provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Specific embodiments of the present application have been shown by the above-mentioned drawings, and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the concepts of the present application in any way, but to illustrate the concepts of the present application to those skilled in the art by referring to specific embodiments.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.

Terminology Explanation:

Inter-satellite link refers to a communication network constructed by multiple satellites in space, which can interconnect multiple satellites.

The satellite control center is the hub for commanding the work of the satellite, as well as the ground command of the satellite. The satellite control center uses multiple computers to command and monitor the operation of the satellite, issue various instructions to the satellite, arrange the satellite work program, control the satellite operation attitude, direct the sensor work and information transmission, and control the on-board instruments and the ground receiving station. Work cooperation, etc.

The earth station is a part of the satellite communication system, including antenna, uplink equipment, downlink equipment, etc. Among them, the azimuth and pitch angle of the antenna are controlled by the manual or automatically controlled tracking system, so that the antenna can be aimed at the communication satellite at any time. Uplink equipment is the system that the earth station sends information; downlink equipment is the system that the earth station receives information.

With the rapid development of aerospace technology, satellite has become one of the effective solutions to achieve global communication coverage. Because it has the characteristics of global coverage, it can coordinate the terrestrial network to work together in the area where the terrestrial network is constructed, and for the area where the terrestrial network is not constructed, or the highly dynamic terminal (mobile terminal with higher transmission frequency), the satellite network is also the same. It can also be serviced. At the same time, the orbit height of low-orbit satellites is relatively low, so the satellite-ground link has low transmission delay, high speed and low transmission loss. It is gradually becoming a trend to use low-orbit satellites as gateways for IoT communication. The following is a detailed introduction to satellite communication through specific examples:

FIG. 1 is an application scenario diagram provided by an embodiment of the present application. As shown in FIG. 1 , the application scenario includes: multiple inter-satellite links 11 , earth stations 12 , satellite control center 13 , terminal equipment 14 , and user data center 15 ;

Wherein, each of the multiple inter-satellite links 11 includes n satellites, the n satellites are all located in the same orbit, and n is an integer greater than or equal to 2.

The earth station 12 can be communicatively connected with the satellite; when the satellite enters the communicable range of the earth station 12, it sends remote control information to the satellite, and the remote control information includes the group identification of the illegal group and the group identification of the authorized group. Optionally, the remote control information may further include the group identifier of the unauthorized group.

The satellite control center 13 is connected in communication with the earth station 12, and the user can group a plurality of terminal equipments according to service types or user groups through the satellite control center 13 to obtain Z groupings; and determine X authorized groups in the Z groups; Wherein, Z is an integer greater than or equal to 1, X is an integer greater than or equal to 1, and less than or equal to Z; and when the satellite enters the communicable range of the earth station 12, the first generation of the X number of authorized groups is generated according to the group identifiers of the X authorized groups. A remote control message is sent to the satellite.

Optionally, after the user groups multiple terminal devices according to service types or user groups through the satellite control center 13, and obtains Z groups, he can also determine Y illegal groups in the Z groups; wherein, Z is greater than or an integer equal to 1, Y is an integer greater than or equal to 1, and less than or equal to Z; and when the satellite enters the communicable range of the earth station 12, the second remote control information is generated according to the group identification of the Y illegal groups, and sent to the satellite.

The terminal device 14 can be used as a sending end, that is, a source end, and can also be a destination end, that is, a receiving end. When the terminal device acts as the source (hereinafter referred to as the source terminal), when the satellite enters the communicable range of the source terminal, the source terminal can send information to the satellite.

When the terminal device acts as the destination (hereinafter referred to as the destination terminal device), the satellite periodically sends out broadcast information, and the broadcast information includes the operation parameters of the satellite. When the satellite enters the communicable range of the destination terminal device, and the destination terminal device receives the broadcast information of the satellite, it can calculate the communicable duration between the satellite and the destination terminal device according to the operating parameters of the satellite, and calculate the communicable duration sent to the satellite. The satellite can determine whether the destination terminal device is within the communication coverage of the satellite according to the communicable duration. In this way, the satellite can determine whether the information to be sent to the destination terminal device can be forwarded to the destination terminal device.

In the related art, when a large number of users send information to the satellite through the terminal equipment in a point-to-point manner at the same time, the communication pressure of the satellite will be high, resulting in frame loss of some information, thereby causing data transmission failure. For example, the data to be transmitted sent by the source terminal device to the destination mainly includes collection service data and communication service data. Collection service data has lower requirements on timeliness, while communication service data requires more timeliness. high. The collection service data is generally transmitted periodically. When there are many collection services in a certain area, a large amount of collection service data will be sent to the satellite at the same time, resulting in saturation of satellite reception. When there are other communication requirements, such as communication However, satellites cannot guarantee the reception of communication service data, resulting in frame loss of communication service data.

In addition, the earth station sends the identifier of each illegal terminal device to the satellite, and the satellite stores the identifier of each illegal terminal device, and determines whether the source terminal device is an illegal terminal device according to the stored identifier of each illegal terminal device, This will lead to greater storage pressure on the satellite.

In view of the above-mentioned technical problems, the inventor of the present application proposes the following technical idea: by grouping the terminal equipment that communicates with the satellite, and authorizing each group, so that the satellite can provide point-to-point communication to the authorized grouped terminal equipment, and then Arriving at the terminal equipment that restricts point-to-point communication at the same time, solving the problem that when a large number of users send target information to the satellite through the terminal equipment in a point-to-point manner at the same time, the communication pressure of the satellite will be higher, resulting in frame loss of some target information and data transmission failure. .

Specifically, by pre-storing the group identifier of the authorization group on the satellite, and according to the group identifier of the authorization group pre-stored on the satellite and the group identifier to be sent to the destination terminal device, it is determined whether the destination terminal device is authorized and when it is determined that the destination terminal device is an authorized terminal device and the satellite is within the communicable range of the destination terminal device, the target information is sent to the destination terminal device.

The technical solutions of the present application and how the technical solutions of the present application solve the above-mentioned technical problems will be described in detail below with specific examples. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

FIG. 2 is a flowchart 1 of a data transmission method provided by an embodiment of the present application. As shown in Figure 2, the data transmission method includes:

S201. The satellite receives target information to be sent by the source terminal device to the destination terminal device.

The target information includes the group identifier corresponding to the destination terminal device and the flag bit of the destination address; the flag bit of the destination address is used to indicate whether the target data includes the address of the destination terminal device; the group identifier is used to identify the destination terminal device. The grouping corresponding to the destination terminal equipment is obtained by grouping the terminal equipment according to the service type or user group.

In this embodiment, the source terminal device refers to the terminal device corresponding to the source, that is, the sender. The destination terminal device refers to the terminal device corresponding to the destination end, that is, the receiving end. For example, when terminal device A sends information to terminal device B, then terminal device A is the source end, and terminal device B is the destination end, and when terminal device B sends information to terminal device A, then terminal device B is the source end, Terminal device A is the destination.

The satellite in this embodiment may be any satellite in the inter-satellite link as shown in FIG. 1 .

S202. If the flag bit of the destination address indicates that the target data includes the destination address, the satellite determines whether the destination terminal device is an authorized terminal device according to the pre-stored group identifier of the authorized group and the group identifier corresponding to the destination terminal device.

Optionally, determine whether the destination terminal device is an authorized terminal device according to the pre-stored group identifier of the authorization grouping and the group identifier corresponding to the destination terminal device, including: if the pre-stored group identifier of the authorization group includes the destination terminal The group identifier corresponding to the terminal device, then the destination terminal device is determined to be an authorized terminal device; if the pre-stored group identifier of the authorized group does not include the group identifier corresponding to the destination terminal device, it is determined that the destination terminal device is unauthorized Terminal Equipment.

In this embodiment, the flag bit of the destination address indicates that the target data includes the destination address, indicating that the target data is information sent to the destination terminal device.

Before this step S202, the following steps are also included:

Step a1, the satellite receives the group identifier of each authorization group in the X authorization groups.

Among them, the user can group M terminal devices according to the service type or user group through the satellite control center to obtain multiple groups; each group in the multiple groups corresponds to a group identifier; and the satellite enters the communicable range of the earth station. At the time, the first remote control information is sent to the satellite through the earth station. The first remote control information includes a group identifier of each authorization group in the X authorization groups; wherein, the group identifier of each authorization group in the X authorization groups may be the serial number of each authorization group in the X authorization groups.

Accordingly, satellite control centers and earth stations need to perform the following steps:

a11. The satellite control center groups M terminal devices according to service types or user groups to obtain Z groups; M is an integer greater than or equal to 1; Z is an integer greater than or equal to 1 and less than or equal to M;

a12. The satellite control center determines X authorized groups in the Z groups; X is an integer greater than or equal to 1 and less than or equal to Z;

a13. When the satellite enters the communicable range of the earth station corresponding to the satellite control center, the satellite control center sends the group identifier of each authorized group in the X authorized groups to the earth station.

a14. The earth station receives the group identifier of each authorization group in the X authorization groups.

a15. When the earth station enters the communicable range of the earth station, send the group identifier of each authorization group in the X authorization groups to the satellite.

Taking one of the multiple groups as an example, if the group is an authorized group, then each terminal device in the group is an authorized terminal device; if the group is an unauthorized group, then each terminal device in the group is an unauthorized group. Authorized terminal device.

Step a2: Store the group identifier of each authorization group in the X authorization groups.

When the satellite receives the first remote control information sent by the earth station, it parses the first remote control information, obtains the group identification of each authorized group in the X authorized groups, and uses the group identification of each authorized group in the X authorized groups Stored in the satellite's storage unit.

Afterwards, when the satellite receives the target information to be sent by the source terminal equipment to the destination terminal equipment, it can determine the destination according to the group identifier of each authorized group in the stored X authorized groups and the group identifier of the destination terminal equipment. Whether the terminal device is authorized.

S203. If the destination terminal device is an authorized terminal device, determine whether the satellite is located within the communicable range of the destination terminal device.

Specifically, whether the satellite is within the communicable range of the destination terminal device includes: determining whether registration information sent by the destination terminal device is received, where the registration information is used to indicate the communicable duration between the destination terminal device and the satellite.

Optionally, the satellite periodically sends out broadcast information, and the broadcast information includes the operation parameters of the satellite, such as altitude, eccentric elevation angle, etc. After receiving the broadcast information, the destination terminal equipment determines the relationship between the destination terminal equipment and the satellite according to the operation parameters of the satellite. Communication time. And send the determined communication time with the satellite to the satellite. After that, the satellite can determine whether the current terminal device is located within the communication coverage of the satellite according to the received communicable duration sent by the terminal device.

Optionally, the satellite periodically sends out broadcast information, and the broadcast information includes whether the inter-satellite link is available at the current moment and whether the satellite can communicate with the earth station. The terminal device judges the operation status of the satellite according to the received broadcast information, including whether the inter-satellite link is available at the current moment, whether the satellite can communicate with the earth station, and selects the sending method of the target information according to the operation status of the satellite. For example, if the target satellite cannot communicate with the earth station at the current moment, the user can select through the terminal device whether to send the target information through the target satellite.

In an optional implementation manner, if the destination terminal device is an unauthorized terminal device, the target information is not forwarded, for example, the target information is discarded.

S204: If the satellite is located within the communicable range of the destination terminal device, send the target information to the destination terminal device.

In an optional implementation manner, if the destination terminal device is an authorized terminal device and the satellite is within the communicable range of the destination terminal device, the target information is sent to the destination terminal device through point-to-point communication.

In another optional implementation, if the destination terminal device is an authorized terminal device and the satellite is within the communicable range of the destination terminal device, the target information is sent to the destination terminal device through the earth station. When the target information is sent to the destination terminal equipment through the earth station, the target information is first sent to the earth station, and then forwarded to the user data center through the earth station, and then the user data center forwards the target information to the destination terminal equipment.

In this embodiment, the target information to be sent by the source terminal device to the destination terminal device is received; the target information includes the group identifier corresponding to the destination terminal device and the flag bit of the destination end address; the flag bit of the destination end address is used to indicate the target data Whether the address of the destination terminal equipment is included; the grouping identifier is used to identify the group corresponding to the destination terminal equipment; the group corresponding to the destination terminal equipment is obtained by grouping the terminal equipment according to the service type or user group; The bit indicates that the target data includes the destination address, then according to the pre-stored group identifier of the authorized grouping and the corresponding group identifier of the destination terminal device, determine whether the destination terminal device is an authorized terminal device; if the destination terminal device is an authorized terminal device, and the satellite is within the communicable range of the destination terminal device, the target information is sent to the destination terminal device. Whether the destination terminal device is an authorized terminal device is determined according to the pre-stored group identifier of the authorized group and the group identifier corresponding to the destination terminal device; if the destination terminal device is an authorized terminal device, and the satellite is located at the destination terminal device Within the communicable range, the target information is sent to the destination terminal device. Therefore, when a large number of users send target information to the satellite in a point-to-point manner through terminal devices at the same time, the target information of authorized groups is forwarded, and the target information of terminal equipment of unauthorized groups is restricted. In this way, the number of point-to-point communications at the same time can be limited, thereby avoiding the congestion of the satellite's delivery queue, reducing the communication pressure on the satellite, and reducing the frame loss phenomenon of the target information.

FIG. 3 is a second flowchart of a data transmission method provided by an embodiment of the present application. As shown in Figure 3, for the data to be transmitted that is also included in the target information, the data transmission method includes the following steps:

S301. If the satellite is not located within the communicable range of the destination terminal device, determine whether the data to be transmitted is target type data.

In this embodiment, the target type data refers to data that requires high timeliness, or data that needs to be processed in real time (real-time data). Optionally, the target type data includes communication service data, such as short message, voice message, video service data, and the like.

In order to ensure the real-time performance of the target type data, S302 may be used to process the target type data.

S302. If the data to be transmitted is target type data, forward the target information through N satellites located on the same orbit as the satellite; N is an integer greater than or equal to 2.

It should be understood that, in S302, if the target information to be sent to the destination terminal device does not include the identifier of the target satellite, the target information is forwarded by N satellites located on the same orbit as the satellite; When the target information of the destination terminal device includes the identifier of the destination satellite, it is necessary to wait for the destination satellite to enter the communicable range of the earth station, and then send the target information to the destination terminal device through the destination satellite.

S303. If the target information is not successfully forwarded by N satellites located on the same orbit as the satellites, send the target information to a target earth station located within the communication coverage of the satellites.

Among them, the target earth station is used to determine the target satellite according to the target information, and when the target earth station is located within the communication coverage of the target satellite, the target information is forwarded to the destination terminal equipment through the target satellite; the target satellite is connected to the destination terminal equipment. the nearest satellite.

For example, the value of N is 3, that is, there are 3 satellites on the same orbit, which are respectively recorded as satellite 1, satellite 2 and satellite 3. The three satellites form a triangle shape. If the source terminal equipment is located in the communication coverage of satellite 1 and send the target type data to be sent to the destination terminal device to satellite 1, and the destination terminal device is not located within the communication coverage of satellite 1, then satellite 1 can forward the target type data to satellite 2, if satellite 2 It is determined that the destination terminal device is located within the communication coverage of the satellite 2, and the target type data is forwarded to the destination terminal device. If satellite 2 determines that the destination terminal equipment is not within the communication coverage of satellite 2, satellite 2 continues to forward the target information to satellite 3, and satellite 3 determines whether the destination terminal equipment is within the communication coverage of satellite 3. The satellite 3 determines that the destination terminal device is located within the communication coverage of the satellite 3, and then forwards the target type data to the destination terminal device. If the satellite 3 determines that the destination terminal device is not located within the communication coverage of the satellite 3, the satellite 3 forwards the target type data to the satellite 1, and the satellite 1 forwards the target type data to the earth station located within the communication coverage of the satellite 1. , and the earth station located in the communication coverage of satellite 1 calculates the target satellite according to the target type data, that is, calculates the satellite that is closest to the destination terminal device, and when the earth station is within the communication coverage of the target satellite, The target type data is sent to the target satellite, and the target satellite sends the target type data to the destination terminal device.

It should be understood that the target satellite here may be any one of the N satellites, or may be other satellites located in different orbits from the N satellites.

In the above example, satellite 1, satellite 2 and satellite 3 forward the target type data to the destination terminal equipment, including: forwarding the target type data to the earth station corresponding to the destination terminal equipment, and through the earth station corresponding to the destination terminal equipment The station sends the target type data to the user data center, and then the user data center sends the target type data to the destination terminal device. Or the satellite directly forwards the target type data to the destination terminal device.

In this embodiment, when N satellites located on the same orbit as the satellites fail to forward the target information successfully, the target information is sent to the target earth station located within the communication coverage of the satellites. And the target earth station is used to determine the target satellite according to the target information, and when the target earth station is within the communication coverage of the target satellite, the target information is forwarded to the destination terminal equipment through the target satellite; the target satellite is the distance from the destination terminal equipment. nearest satellite. So that the satellite does not need to perform complex path calculations, only the target information needs to be forwarded between satellites in the same orbit, and when the number of forwarding times exceeds the maximum number of satellites in the same orbit, it is sent to the earth station, and the earth station calculates the best path. Computational pressure on the star. In addition, the quantity of target information communicated using the inter-satellite link at the same time can be limited, thereby avoiding the congestion of the inter-satellite link and reducing the frame loss phenomenon of the target information.

Please continue to refer to FIG. 3. On the basis of the above method embodiment, the data transmission method further includes the following steps:

S304. If the data to be transmitted is non-target type data, store the target information in the satellite, and send the target information to the destination terminal device when the satellite is within the communicable range of the destination terminal device.

In this embodiment, the non-target type data refers to data that has lower requirements for timeliness, or data that does not require real-time processing (real-time data).

Optionally, the non-target type data includes collected business data, such as sensor data collected by a sensor, such as temperature data, humidity data, and the like.

For example, if the value of N is 3, that is, there are 3 satellites in the same orbit, which are respectively recorded as satellite 1, satellite 2 and satellite 3. The three satellites form a triangle shape. If the source terminal equipment is located in the communication coverage of satellite 1 If the destination terminal equipment is not within the communication coverage of satellite 1, the non-target type data can be stored in the storage unit of satellite 1 , when the satellite 1 enters, that is, is within the communicable range of the destination terminal device, the target information 1 is sent to the destination terminal device through the destination terminal device.

S305. If the flag bit of the destination address indicates that the target data does not include the destination address, send the target information to the earth station corresponding to the source terminal device according to the group identifier of the group corresponding to the source terminal device.

Wherein, if the flag bit of the destination end address indicates that the target data does not include the destination end address, it means that the target data is information sent to the earth station corresponding to the destination end terminal device.

In this embodiment, it can be understood that each earth station has a corresponding relationship with the group identifier of the authorization group uploaded to the satellite, and the earth station corresponding to the destination terminal device can be determined according to the identifier of the authorization group.

When encountering emergencies and it is necessary to ensure that one of the groups maximizes communication, the terminals of other groups can be silently sent through satellite broadcast control instructions, even if the terminal equipment of other groups disconnects the link for sending information to the satellite. The specific implementation is as follows:

FIG. 4 is a third flowchart of a data transmission method provided by an embodiment of the present application. As shown in Figure 4, the data transmission method includes the following steps:

S401. The satellite receives a control instruction sent by the ground station to control the terminal equipment of the first target group.

Wherein, the control instruction includes the group identifier of the first target group, and the control instruction is used to instruct the terminal equipment of the first target group to disconnect the link for sending information to the satellite; the bandwidth required by the first target group is greater than or equal to the remaining bandwidth of the satellite , the remaining bandwidth of the satellite is equal to the total bandwidth of the satellite minus the bandwidth used by the packets corresponding to the source terminal device.

S402. The satellite broadcasts a control instruction, so that the terminal device corresponding to the first target group disconnects the link for sending information to the satellite.

For example, there is currently a terminal device of group A, group A communicates with the satellite, and group B, that is, the first target group, also communicates with the satellite, and the remaining bandwidth after the satellite provides bandwidth to group A is not enough to provide B. grouping, and group B communicates with the satellite, affecting the communication between group A and the satellite, the communication of group A can be guaranteed by disconnecting the link for sending information to the satellite by group B.

Among them, the satellite broadcasts control commands periodically. Correspondingly, the terminal equipment of the first target grouping receives the control instruction sent by the satellite; the control instruction includes the grouping identifier of the first target grouping, and the control instruction is used to instruct the terminal equipment of the first target grouping to disconnect the link for sending information to the satellite; The bandwidth required by the first target grouping is greater than or equal to the remaining bandwidth of the satellite, and the remaining bandwidth of the satellite is equal to the total bandwidth of the satellite minus the bandwidth used by the grouping corresponding to the source terminal device; according to the control instruction, disconnect the transmission to the satellite link to information.

On the basis of the above embodiment, the following steps may be further included: if a control instruction is received during the communication time period of the second target group and the remaining bandwidth of the satellite is less than or equal to the preset bandwidth, broadcasting the control instruction to The terminal equipment corresponding to the second target group is disconnected from the link for sending information to the satellite; the control instruction is generated according to the instruction information of the emergency communication sent by the third target group, and is used to indicate the source terminal of the non-third target group. The device disconnects the link for sending information to the satellite; the second target group is an authorized group, and the third target group is an unauthorized group.

For example, each authorized group has a corresponding communication time end, and the current time period is the communication time period between authorized group A and the satellite, and at this time, the terminal equipment of the unauthorized group monitors the occurrence of emergencies such as earthquakes or fires. Unauthorized grouping needs to transmit a large amount of earthquake or fire information, and the remaining bandwidth of authorized grouping and satellite communication cannot meet the bandwidth required by unauthorized grouping. Emergency communications for unauthorized packets.

FIG. 5 is a fourth flowchart of a data transmission method provided by an embodiment of the present application. As shown in Figure 5, the data transmission method includes the following steps:

Step S501: Determine whether the source terminal device is a legal terminal device according to the pre-stored illegal group identifier and the group identifier corresponding to the source terminal device.

Specifically, if the pre-stored illegal group identifier includes the group identifier corresponding to the source terminal device, the source terminal device is determined to be an illegal terminal device, and if the pre-stored illegal group identifier does not include the group identifier corresponding to the source terminal device , the source terminal device is determined to be a legitimate terminal device.

Step S502, if the source terminal device is an illegal terminal device, discard the target information.

Step S503: If the source terminal device is a legitimate terminal device, determine whether the target data includes the address of the destination terminal.

Before step b1, the following steps are also included:

Step c1, the satellite receives the group identifier of each illegal group in the Y illegal groups.

Specifically, the user can group M terminal devices according to the service type or user group through the satellite control center to obtain multiple groups, and each group in the multiple groups corresponds to a group identifier. When the satellite enters the communicable range of the earth station During the time, the second remote control information is sent to the satellite by the earth station, and the second remote control information includes the grouping identification of each illegal grouping in the Y illegal groupings; Wherein, the grouping identification of each illegal grouping in the Y illegal groupings can be Y The number of each illegal packet in the illegal packets. M is an integer greater than or equal to 1; Y is an integer greater than or equal to 1 and less than or equal to M;

Taking one of the multiple groups as an example, if the group is a legal group, then each terminal device in the group is a legal terminal device; if the group is an illegal group, then each terminal device in the group is an illegal terminal device. .

Accordingly, the satellite control center and the earth station need to perform the following steps:

Step c11, the satellite control center groups M terminal devices according to service types or user groups to obtain Z groups; M is an integer greater than or equal to 1; Z is an integer greater than or equal to 1 and less than or equal to M.

Step c12, the satellite control center determines Y illegal groups in the Z groups; Y is an integer greater than or equal to 1 and less than or equal to Z.

Step c13: When the satellite enters the communicable range of the earth station corresponding to the satellite control center, the satellite control center sends the group identifier of each illegal group in the Y illegal groups to the earth station.

Step c15, the earth station receives the group identifier of each illegal group in the Y illegal groups; Y is an integer greater than or equal to 1.

Step c16: When the earth station enters the communicable range of the earth station, the earth station sends the group identifier of each illegal group in the Y illegal groups to the satellite.

Step c2, the satellite stores the group identifier of each illegal group in the Y illegal groups.

When the satellite receives the second remote control information sent by the earth station, it parses the second remote control information to obtain the group identifier of each illegal group in the Y illegal groups, and divides the grouping of each illegal group in the Y illegal groups. The identification is stored in the storage unit of the satellite.

Afterwards, when the satellite receives the target information to be sent by the source terminal equipment to the destination terminal equipment, it can determine the source according to the group identifier of each illegal group in the stored Y illegal groups and the group identifier of the source terminal equipment. Check whether the terminal device is legal.

As an optional implementation manner, when the satellite is located within the communicable range of the earth station, the earth station may, according to the group identification of each authorized group in the X authorized groups, and the grouping of each illegal group in the Y illegal groups The identification generates remote control information, the remote control information includes the group identification of each authorized group in the X authorized groups, and the group identification of each illegal group in the Y illegal groups, and sends the remote control information to the satellite.

In this embodiment, whether the source terminal device is an illegal terminal device is determined by the grouping identifier of the source terminal device. Compared with the satellite, the identifier of each illegal terminal device is stored, and the source terminal device is determined according to the stored identifier of each illegal terminal device. The solution of whether the terminal device is an illegal terminal device can reduce the storage pressure of the satellite.

On the basis of the above embodiment, the user can also set a communication time period for each authorized group in the X authorized groups through the satellite control center, and when the satellite enters the communicable range of the earth station corresponding to the satellite control center, the X The communication time period for each of the authorization packets is sent to the satellite. Correspondingly, when the satellite enters the communicable range of the earth station corresponding to the satellite control center, the communication time period of each authorized group in the X authorization groups is sent to the satellite through the earth station corresponding to the satellite control center.

Correspondingly, the earth station receives the communication time period of each authorized group in the X authorization groups, and the communication time period is used to represent the communicable time between the terminal equipment in each group and the satellite; and when the satellite enters the communicable range of the earth station The communication time period of each of the X authorization packets is sent to the satellite within the time limit.

Accordingly, the satellite receives and stores the communication time period of each of the X authorized packets.

In this embodiment, by setting a communication time period for each authorization group, the terminal devices in each authorization group communicate in their respective communication time periods, which can limit the point-to-point communication and the terminal equipment of the inter-satellite link communication at the same time. At the same time, increase the number of terminal equipment connected to the satellite and improve the utilization rate of satellite communication.

On the basis of the above embodiment, the terminal device can also obtain the indication information of emergency communication input by the user through the terminal device; the indication information includes the identifier of the terminal device, and the identifier of the terminal device is used to represent the identity information of the terminal device; The grouping is an unauthorized grouping; the terminal equipment sends the indication information to the ground station; wherein, the ground station is used to determine the third target grouping corresponding to the terminal equipment according to the identification of the terminal equipment, and generate a third target grouping corresponding to the terminal equipment according to the third target grouping. The control command is sent to the satellite located within the communicable range of the ground station, and the control command is used to instruct the terminal equipment not in the third target group to disconnect the link for sending information to the satellite.

Correspondingly, the satellite control center performs the following steps: receiving the indication information of the emergency communication; the indication information includes the identification of the terminal equipment of the emergency communication; according to the identification of the terminal equipment of the emergency communication, determine the third target group corresponding to the terminal equipment of the emergency communication; According to the group identification of the third target group, a control instruction is generated; the control instruction is used to instruct the terminal equipment that is not the third target group to disconnect the link for sending information to the satellite; when the satellite enters the communicable range of the earth station corresponding to the satellite control center When inside, the control command is sent to the satellite through the earth station. Accordingly, the earth station sends control commands to satellites located within the communicable range of the earth station.

In this embodiment, the terminal device for emergency communication may be an authorized terminal device or an unauthorized terminal device. When the terminal equipment of emergency communication is an authorized terminal equipment, if the current time period is not the communication period of the terminal equipment of emergency communication, the terminal equipment of emergency communication can send control instructions to the satellite through the earth station, and the satellite will then broadcast the control instructions. out, so that the terminal equipment of other packets occupying the satellite communication bandwidth closes the sending function.

On the basis of the above embodiment, in order to deal with the situation that unauthorized terminal equipment needs to communicate through satellite in the face of emergencies, the application can also propose the following implementations:

In an optional implementation manner, if the destination terminal device is an unauthorized terminal device and the target information is emergency information, when the satellite is within the communicable range of the destination terminal device, the target information is sent to Destination terminal equipment.

In another optional implementation, if the destination terminal device is an unauthorized terminal device and the target information is emergency information, when the satellite is not within the communicable range of the destination terminal device, the target information Relay through N satellites in the same orbit as the satellite; N is an integer greater than or equal to 2.

Further, if the emergency information is not successfully forwarded by N satellites located in the same orbit as the satellite, the emergency information is sent to the target earth station located within the communication coverage of the satellite; Determine the target satellite, and when the target earth station is within the communication coverage of the target satellite, forward the target information to the target terminal device through the target satellite; the target satellite is the satellite that is closest to the target terminal device.

On the basis of the foregoing method embodiments, FIG. 6 is a schematic structural diagram of a data transmission apparatus provided by an embodiment of the present application. As shown in FIG. 6 , the data transmission device includes: a receiving module 601, a determining module 602 and a sending module 603;

The receiving module 601 is configured to receive target information to be sent by the source terminal device to the destination terminal device; the target information includes the group identifier corresponding to the destination terminal device and the flag bit of the destination address; the destination address The flag bit is used to indicate whether the target data includes the address of the destination terminal device; the group identifier is used to identify the group corresponding to the destination terminal device; the group corresponding to the destination terminal device is based on the service Obtained by grouping terminal equipment by type or user group;

The determining module 602 is configured to, if the flag bit of the destination address indicates that the target data includes the destination address, then according to the pre-stored group identifier of the authorization grouping and the group identifier corresponding to the destination terminal device, determine Whether the destination terminal device is an authorized terminal device;

The sending module 603 is configured to send the target information to the destination terminal device if the destination terminal device is an authorized terminal device and the satellite is located within the communicable range of the destination terminal device .

In some embodiments, the determining module 602 is further configured to determine the destination terminal device if the destination terminal device is an authorized terminal device and the satellite is not within the communicable range of the destination terminal device Whether the data to be transmitted is target type data; the sending module 603 is further configured to forward the target information through N satellites located on the same orbit as the satellite if the data to be transmitted is target type data ; The N is an integer greater than or equal to 2.

In some embodiments, the sending module 603 is further configured to send the target information to a communication located on the satellite if the target information is not successfully forwarded by N satellites located on the same orbit as the satellite A target earth station within the coverage; wherein, the target earth station is used to determine a target satellite according to the target information, and when the target earth station is located within the communication coverage of the target satellite, the target information The target satellite is forwarded to the destination terminal device through the target satellite; the target satellite is the closest satellite to the destination terminal device.

In some embodiments, the sending module 603 is further configured to store the target information in the satellite if the data to be transmitted is non-target type data, and the satellite is located at the destination terminal device When it is within the communicable range, the target information is sent to the destination terminal device.

In some embodiments, the apparatus further includes: a receiving module 601, further configured to receive a control instruction sent by the ground station to control the terminal equipment of the first target group; the control instruction includes the grouping of the first target group identifier, the control instruction is used to instruct the terminal equipment of the first target group to disconnect the link for sending information to the satellite; the bandwidth required by the first target group is greater than or equal to the remaining bandwidth of the satellite, The remaining bandwidth of the satellite is equal to the total bandwidth of the satellite minus the bandwidth used by the grouping corresponding to the source terminal device; the sending module 603 is further configured to broadcast the control instruction, so that the first target grouping The corresponding terminal device disconnects the link for sending the information to the satellite.

In some embodiments, the sending module 603 is further configured to, if the flag bit of the destination address indicates that the target data does not include the destination address, according to the group identifier of the group corresponding to the source terminal device, Send the target information to the earth station corresponding to the source terminal device.

In some embodiments, the apparatus further includes: a storage module 604; a receiving module 601, further configured to receive a group identifier of each authorization group in the X authorization groups; the X authorization groups are for the M terminal devices according to the service An authorized group in multiple groups obtained by grouping by type or user group; the M is an integer greater than or equal to 1; the X is an integer greater than or equal to 1 and less than or equal to M; the storage module 604 is used for The group identifier of each authorization group in the X authorization groups is stored.

In some embodiments, the determining module 602 is further configured to determine whether the source terminal device is a legal terminal device according to the pre-stored illegal group identifier and the group identifier corresponding to the source terminal device; If the terminal device is an illegal terminal device, the target information is discarded; if the source terminal device is a legal terminal device, it is determined whether the target data includes the address of the destination terminal.

In some embodiments, the receiving module 601 is further configured to receive a group identifier of each illegal group in the Y illegal groups; the Y illegal groups are obtained by grouping M terminal devices according to service types or user groups. The M is an integer greater than or equal to 1; the X is an integer greater than or equal to 1 and less than or equal to M; the storage module 604 is further configured to store the Y illegal packets in the The group ID of each illegal group is stored.

In some embodiments, the sending module 603 is further configured to broadcast the control instruction if the control instruction is received during the communication time period of the second target group and the remaining bandwidth of the satellite is less than or equal to the preset bandwidth, so that the terminal equipment corresponding to the second target group disconnects the link for sending information to the satellite; the control instruction is generated according to the indication information of the emergency communication sent by the third target group, and is used to instruct the The source terminal equipment that is not the third target group disconnects the link for sending information to the satellite; the second target group is an authorized group, and the third target group is an unauthorized group.

On the basis of the foregoing method embodiments, FIG. 7 is a schematic structural diagram of a data transmission apparatus provided by an embodiment of the present application. As shown in FIG. 7 , the data transmission device includes: a receiving module 701, a sending module 702; a receiving module 701, configured to receive the group identifier of each authorization group in X authorization groups; the X is greater than or equal to 1 Integer; the sending module 702 is configured to send the group identifier of each authorized group in the X authorized groups to the satellite when the satellite enters the communicable range of the earth station.

In some embodiments, the receiving module 701 is further configured to receive a group identifier of each illegal group in the Y illegal groups; the Y is an integer greater than or equal to 1; the sending module 702 is further configured to enter the When the earth station is within the communicable range, the group identifier of each illegal group in the Y illegal groups is sent to the satellite.

In some embodiments, the apparatus further includes: a determining module 703; a receiving module 701, further configured to receive a forwarding request of target information sent by a satellite; a determining module 703, configured to determine a target satellite according to the target information; the target The satellite is the closest satellite to the destination terminal device of the target information; the sending module 702 is further configured to send the target information to the earth station when the target satellite enters the communicable range of the earth station target satellite.

In some embodiments, the apparatus further includes: a generating module 704; a receiving module 701, which is further configured to receive indication information of emergency communication; the indication information includes a group identifier of a target group of emergency communication; The grouping identifier of the target grouping generates a control instruction; the control instruction is used to instruct the source terminal equipment of the non-target grouping to disconnect the link for sending information to the satellite; the sending module 702 is also used to enter the satellite into the satellite. When it is within the communicable range of the earth station, the control command is sent to the satellite.

In some embodiments, the receiving module 701 is further configured to receive a communication time period of each authorization group in the X authorization groups, where the communication period is used to indicate the communication between the terminal device and the satellite in each of the groups. Communicable time; the sending module 702 is further configured to send the communication time period of each authorized group in the X authorized groups to the satellite when the satellite enters the communicable range of the earth station.

On the basis of the foregoing method embodiments, FIG. 8 is a schematic structural diagram of a data transmission apparatus provided by an embodiment of the present application. As shown in FIG. 8 , the data transmission apparatus includes: a grouping module 801, configured to group M terminal devices according to service types or user groups to obtain Z groups; the M is an integer greater than or equal to 1; The Z is an integer greater than or equal to 1 and less than or equal to M; the determining module 802 is used to determine X authorized groups in the Z groups; the X is greater than or equal to 1 and less than or equal to Z Integer; sending module 803, for when the satellite enters the communicable range of the earth station corresponding to the satellite control center, the group identification of each authorization group in the X authorization groups is sent to the earth station through the earth station. the satellite.

In some embodiments, the determining module 802 is further configured to determine Y illegal packets in the Z packets; the Y is an integer greater than or equal to 1 and less than or equal to Z; the sending module 803 is further configured to When the satellite enters the communicable range of the earth station corresponding to the satellite control center, the group identifier of each illegal group in the Y illegal groups is sent to the satellite through the earth station.

In some embodiments, the apparatus further includes: a setting module 804, configured to set a communication time period of each authorized group in the X authorization groups, where the communication time period is used to represent a terminal in each of the groups The communicable time between the device and the satellite; the sending module 803 is further configured to, when the satellite enters the communicable range of the earth station corresponding to the satellite control center, send the communication time period of each authorized group in the X authorized groups sent to the satellite via the earth station.

In some embodiments, the apparatus further includes: a receiving module 805, configured to receive indication information of emergency communication; the indication information includes an identifier of a terminal device of emergency communication; and a determining module 802, further configured to, according to the emergency communication the identifier of the terminal device, to determine the third target group corresponding to the terminal device of the emergency communication; the generating module 806 is configured to generate a control instruction according to the group identifier of the third target group; the control instruction is used to instruct the The terminal equipment that is not the third target group disconnects the link for sending information to the satellite; the sending module 803 is further configured to send the control to the satellite when the satellite enters the communicable range of the earth station corresponding to the satellite control center Commands are sent to the satellite via the earth station.

On the basis of the foregoing method embodiments, FIG. 9 is a schematic structural diagram of a data transmission apparatus provided by an embodiment of the present application. As shown in FIG. 9 , the data transmission device includes: an acquisition module 901 for acquiring indication information of emergency communication input by a user through the terminal device; the indication information includes an identifier of the terminal device, and the identifier is used for to characterize the identity information of the terminal device; the group corresponding to the terminal device is an unauthorized group; the sending module 902 is configured to send the indication information to the ground station; wherein, the ground station is used to device identification, determine the third target group corresponding to the terminal device, and generate a control instruction according to the third target group corresponding to the terminal device and send it to the satellite located within the communicable range of the ground station, the The control instruction is used to instruct a terminal device that is not a third target group to disconnect the link for sending information to the satellite.

In some embodiments, the apparatus further includes: the obtaining module 901, further configured to receive a control instruction sent by a satellite; the control instruction includes a group identifier of the first target group, and the control instruction is used to indicate the The terminal equipment of the first target group disconnects the link for sending information to the satellite; the bandwidth required by the first target group is greater than or equal to the remaining bandwidth of the satellite, and the remaining bandwidth of the satellite is equal to the satellite The total bandwidth minus the bandwidth used by the grouping corresponding to the source terminal device; the disconnection module 903 is configured to disconnect the link for sending information to the satellite according to the control instruction.

The data transmission apparatus provided in the embodiments of the present application can be used to implement the technical solutions of the data transmission methods in the foregoing embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

It should be noted that it should be understood that the division of each module of the above apparatus is only a division of logical functions, and may be fully or partially integrated into a physical entity in actual implementation, or may be physically separated. And these modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in hardware. For example, the determination module 602 may be a separately established processing element, or may be integrated into a certain chip of the above-mentioned apparatus to realize, in addition, it may also be stored in the memory of the above-mentioned apparatus in the form of program code, and processed by one of the above-mentioned apparatuses The element invokes and executes the functions of the determination module 602 above. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently. The processing element here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.

FIG. 10 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 10 , the electronic device may include: a transceiver 101 , a processor 102 , and a memory 103 .

The processor 102 executes the computer-executable instructions stored in the memory, so that the processor 102 executes the solutions in the above-described embodiments. The processor 102 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic. devices, discrete gate or transistor logic devices, discrete hardware components.

The memory 103 is connected to the processor 102 through a system bus and performs mutual communication, and the memory 103 is used for storing computer program instructions.

The transceiver 101 can be used to obtain the task to be executed and the configuration information of the task to be executed.

The system bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus or the like. The system bus can be divided into address bus, data bus, control bus and so on. For ease of presentation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. Transceivers are used to enable communication between the database access device and other computers (eg, clients, read-write libraries, and read-only libraries). The memory may include random access memory (RAM), and may also include non-volatile memory (non-volatile memory).

The embodiment of the present application further provides a chip for running instructions, and the chip is used to execute the technical solution of the data transmission method in the above-mentioned embodiment.

Embodiments of the present application further provide a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium, and when the computer instructions are executed on a computer, the computer can execute the technical solutions of the data transmission methods of the above embodiments.

Embodiments of the present application further provide a computer program product, where the computer program product includes a computer program, which is stored in a computer-readable storage medium, at least one processor can read the computer program from the computer-readable storage medium, and at least one processor The technical solutions of the data transmission methods in the above-mentioned embodiments can be implemented when the computer program is executed.

Other embodiments of the present application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of this application that follow the general principles of this application and include common knowledge or conventional techniques in the technical field not disclosed in this application . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

It is to be understood that the present application is not limited to the precise structures described above and illustrated in the accompanying drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (28)

1. A data transmission method, applied to a satellite, the method comprising:

receiving target information to be sent to target terminal equipment by source terminal equipment; the target information comprises a grouping identification corresponding to the destination terminal equipment and a zone bit of a destination address; the flag bit of the destination terminal address is used for indicating whether the target data comprises the address of the destination terminal equipment; the group identifier is used for identifying a group corresponding to the destination terminal equipment; the grouping corresponding to the destination terminal equipment is obtained by grouping the terminal equipment according to the service type or the user group;

if the flag bit of the destination terminal address indicates that the target data comprises the destination terminal address, determining whether the destination terminal device is an authorized terminal device according to a pre-stored group identifier of an authorized group and a group identifier corresponding to the destination terminal device;

and if the destination terminal equipment is authorized terminal equipment and the satellite is positioned in the communicable range of the destination terminal equipment, sending the target information to the destination terminal equipment.

2. The method of claim 1, wherein the target information further comprises data to be transmitted, the method further comprising:

if the destination terminal equipment is authorized terminal equipment and the satellite is not located in a communicable range of the destination terminal equipment, determining whether the data to be transmitted is target type data;

if the data to be transmitted is target type data, forwarding the target information through N satellites which are positioned on the same orbit with the satellite; and N is an integer greater than or equal to 2.

3. The method of claim 2, further comprising:

if the target information is not successfully forwarded through N satellites located on the same orbit as the satellites, the target information is sent to a target earth station located within the communication coverage range of the satellites;

the target earth station is used for determining a target satellite according to the target information and forwarding the target information to the destination terminal equipment through the target satellite when the target earth station is located in the communication coverage range of the target satellite; the target satellite is the satellite closest to the destination terminal equipment.

4. The method of claim 2, further comprising:

and if the data to be transmitted is non-target type data, storing the target information in the satellite, and sending the target information to the destination terminal equipment when the satellite is positioned in a communicable range of the destination terminal equipment.

5. The method according to any of claims 1-4, wherein after receiving the target information that is to be sent by the source end terminal device to the destination end terminal device, the method further comprises:

receiving a control instruction which is sent by a ground station and used for controlling the terminal equipment of the first target group; the control instruction comprises a group identification of the first target group, and the control instruction is used for instructing terminal equipment of the first target group to break a link for sending information to the satellite; the bandwidth required by the first target packet is greater than or equal to the residual bandwidth of the satellite, and the residual bandwidth of the satellite is equal to the total bandwidth of the satellite minus the bandwidth used by the packet corresponding to the source terminal device;

and broadcasting the control instruction to enable the terminal equipment corresponding to the first target group to break a link for transmitting information to the satellite.

6. The method according to any one of claims 1-4, further comprising:

and if the flag bit of the destination terminal address indicates that the target data does not include the destination terminal address, sending the target information to an earth station corresponding to the source terminal equipment according to the grouping identifier of the grouping corresponding to the source terminal equipment.

7. The method according to any one of claims 1 to 4, wherein if the flag bit of the destination address indicates that the target data includes the destination address, determining whether the destination terminal device is an authorized terminal device according to a pre-stored packet identifier of an authorized packet and a packet identifier corresponding to the destination terminal device, further includes:

receiving a packet identification for each of the X authorization packets; the X authorization groups are authorized groups in a plurality of groups obtained by grouping the M terminal devices according to service types or user groups; m is an integer greater than or equal to 1; x is an integer greater than or equal to 1 and less than or equal to M;

and storing the group identification of each authorization group in the X authorization groups.

8. The method according to any of claims 1-4, wherein after receiving the target information that is to be sent by the source end terminal device to the destination end terminal device, the method further comprises:

determining whether the source terminal equipment is legal or not according to a prestored illegal packet identifier and a packet identifier corresponding to the source terminal equipment;

if the source terminal equipment is illegal terminal equipment, discarding the target information;

and if the source terminal equipment is legal terminal equipment, determining whether the target data comprises the address of the destination terminal.

9. The method of claim 8, wherein before determining whether the source end device is a valid end device according to a pre-stored illegal packet identifier and a packet identifier corresponding to the source end device, the method further comprises:

receiving a packet identification for each of the Y illegal packets; the Y illegal groups are illegal groups in a plurality of groups obtained by grouping the M terminal devices according to service types or user groups; m is an integer greater than or equal to 1; y is an integer greater than or equal to 1 and less than or equal to M;

and storing the group identification of each illegal group in the Y illegal groups.

10. The method according to any one of claims 1-4, further comprising:

if a control instruction is received in the communication time period of a second target group and the residual bandwidth of the satellite is less than or equal to the preset bandwidth, broadcasting the control instruction so as to enable terminal equipment corresponding to the second target group to break a link for sending information to the satellite; the control instruction is generated according to indication information of emergency communication sent by a third target group and is used for indicating source terminal equipment which is not the third target group to break a link for sending information to the satellite; the second targeted packet is an authorized packet and the third targeted packet is an unauthorized packet.

11. A data transmission method, applied to an earth station, the method comprising:

receiving a packet identification for each of the X authorization packets; x is an integer greater than or equal to 1;

transmitting a packet identification for each of the X authorization packets to a satellite when the satellite comes within communicable range of the earth station.

12. The method of claim 11, further comprising:

receiving a packet identification for each of the Y illegal packets; y is an integer greater than or equal to 1;

transmitting a packet identification for each of the Y illegal packets to the satellite when the satellite comes within communicable range of the earth station.

13. The method according to claim 11 or 12, characterized in that the method further comprises:

receiving a forwarding request of target information sent by a satellite;

determining a target satellite according to the target information; the target satellite is the satellite closest to the target terminal equipment of the target information;

transmitting the target information to the target satellite when the target satellite enters a communicable range of the earth station.

14. The method according to claim 11 or 12, characterized in that the method further comprises:

receiving indication information of emergency communication; the indication information comprises a group identification of a target group of emergency communication;

generating a control instruction according to the grouping identification of the target grouping; the control instruction is used for instructing source terminal equipment of non-target packets to disconnect a link for sending information to the satellite;

and when the satellite enters the communicable range of the earth station, sending the control command to the satellite.

15. The method of claim 11 or 12, wherein after receiving the packet identification of each of the X authorization packets, the method further comprises:

receiving a communication time period for each of the X authorization packets, the communication time period being indicative of a communicable time of a terminal device with a satellite in each of the packets;

transmitting the communication time period for each of the X authorization packets to the satellite when the satellite comes within communicable range of the earth station.

16. A data transmission method, applied to a satellite control center, the method comprising:

grouping the M terminal devices according to the service types or user groups to obtain Z groups; m is an integer greater than or equal to 1; z is an integer which is greater than or equal to 1 and less than or equal to M;

determining X authorized packets of the Z packets; x is an integer greater than or equal to 1 and less than or equal to Z;

and when the satellite enters the communicable range of the earth station corresponding to the satellite control center, transmitting the group identification of each authorization group in the X authorization groups to the earth station.

17. The method of claim 16, wherein after the M terminal devices are grouped according to service types or user groups to obtain Z groups, the method further comprises:

determining Y illegal packets of the Z packets; y is an integer greater than or equal to 1 and less than or equal to Z;

sending the grouping identifications of the Y illegal groups to a satellite;

and when the satellite enters a communicable range of an earth station corresponding to the satellite control center, transmitting the group identification of each illegal group in the Y illegal groups to the satellite through the earth station.

18. The method according to claim 16 or 17, further comprising:

setting a communication time period of each of the X authorization packets, the communication time period being used for representing a communicable time of a terminal device and a satellite in each of the X authorization packets;

and when the satellite enters the communicable range of the earth station corresponding to the satellite control center, transmitting the communication time period of each authorization packet in the X authorization packets to the satellite through the earth station.

19. The method according to claim 16 or 17, further comprising:

receiving indication information of emergency communication; the indication information comprises an identification of the terminal equipment for emergency communication;

determining a third target group corresponding to the terminal equipment of the emergency communication according to the identifier of the terminal equipment of the emergency communication;

generating a control instruction according to the group identification of the third target group; the control instruction is used for instructing terminal equipment which is not the third target group to disconnect a link for transmitting information to the satellite;

and when the satellite enters a communicable range of an earth station corresponding to the satellite control center, the control command is sent to the satellite through the earth station.

20. A data transmission method is applied to a terminal device, and the method comprises the following steps:

acquiring indication information of emergency communication input by a user through the terminal equipment; the indication information comprises an identifier of the terminal equipment, and the identifier is used for representing identity information of the terminal equipment; the group corresponding to the terminal equipment is an unauthorized group;

sending the indication information to a ground station; the ground station is used for determining a third target group corresponding to the terminal device according to the identifier of the terminal device, generating a control instruction according to the third target group corresponding to the terminal device and sending the control instruction to a satellite located in a communicable range of the ground station, wherein the control instruction is used for instructing terminal devices which are not in the third target group to disconnect a link for sending information to the satellite.

21. The method of claim 20, further comprising:

receiving a control instruction sent by a satellite; the control instruction comprises a group identification of a first target group, and the control instruction is used for instructing terminal equipment of the first target group to break a link for sending information to the satellite; the bandwidth required by the first target packet is greater than or equal to the residual bandwidth of the satellite, and the residual bandwidth of the satellite is equal to the total bandwidth of the satellite minus the bandwidth used by the packet corresponding to the source terminal device;

and disconnecting the link for sending information to the satellite according to the control instruction.

22. A data transmission apparatus, for use with a satellite, the apparatus comprising:

the receiving module is used for receiving target information to be sent to the destination terminal equipment by the source terminal equipment; the target information comprises a grouping identification corresponding to the destination terminal equipment and a zone bit of a destination address; the flag bit of the destination terminal address is used for indicating whether the target data comprises the address of the destination terminal equipment; the group identifier is used for identifying a group corresponding to the destination terminal equipment; the grouping corresponding to the destination terminal equipment is obtained by grouping the terminal equipment according to the service type or the user group;

a determining module, configured to determine whether the destination terminal device is an authorized terminal device according to a pre-stored group identifier of an authorized group and a group identifier corresponding to the destination terminal device if the flag bit of the destination address indicates that the target data includes the destination address;

and the sending module is used for sending the target information to the destination terminal equipment if the destination terminal equipment is authorized terminal equipment and the satellite is positioned in a communicable range of the destination terminal equipment.

23. A data transmission apparatus, for use in an earth station, the apparatus comprising:

a receiving module for receiving a packet identifier for each of the X authorization packets; x is an integer greater than or equal to 1;

a transmitting module, configured to transmit a packet identifier of each of the X authorization packets to the satellite when the satellite enters a communicable range of the earth station.

24. A data transmission apparatus, applied to a satellite control center, the apparatus comprising:

the grouping module is used for grouping the M terminal devices according to the service types or the user groups to obtain Z groups; m is an integer greater than or equal to 1; z is an integer which is greater than or equal to 1 and less than or equal to M;

a determination module for determining X authorized packets of the Z packets; x is an integer greater than or equal to 1 and less than or equal to Z;

and the transmitting module is used for transmitting the group identifier of each authorization group in the X authorization groups to the satellite through the earth station when the satellite enters the communicable range of the earth station corresponding to the satellite control center.

25. A data transmission apparatus, applied to a terminal device, the apparatus comprising:

the acquisition module is used for acquiring the indication information of the emergency communication input by the user through the terminal equipment; the indication information comprises an identifier of the terminal equipment, and the identifier is used for representing identity information of the terminal equipment;

the sending module is used for sending the indication information to a ground station; the ground station is used for determining a target group corresponding to the terminal device according to the identifier of the terminal device, generating a control instruction according to the target group corresponding to the terminal device and sending the control instruction to a satellite located in a communicable range of the ground station, wherein the control instruction is used for instructing a terminal device which is not in the target group to disconnect a link for sending information to the satellite.

26. An electronic device, comprising: a memory, a processor;

a memory; a memory for storing the processor-executable instructions;

wherein the processor is configured to implement the method of any one of claims 1-21.

27. A computer-readable storage medium having computer-executable instructions stored therein, which when executed by a processor, are configured to implement the method of any one of claims 1-21.

28. A computer program product, characterized in that it comprises a computer program which, when being executed by a processor, carries out the method of any one of claims 1-21.

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