CN114301519B

CN114301519B - Data transmission method, device, equipment and storage medium

Info

Publication number: CN114301519B
Application number: CN202111676023.0A
Authority: CN
Inventors: 田雨; 陈毅君; 丁晟
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Shikong Daoyu Technology Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Shikong Daoyu Technology Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-03-24
Anticipated expiration: 2041-12-31
Also published as: CN114301519A

Abstract

The application provides a data transmission method, a data transmission device, data transmission equipment and a storage medium. The method comprises the following steps: 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 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 zone 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, transmitting the target information to the destination terminal equipment.

Description

Data transmission method, device, equipment and storage medium

Technical Field

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

Background

With the rapid development of aerospace technology, satellites become one of effective schemes for realizing global communication coverage. Since the orbit height of the low-orbit satellite is relatively low, the satellite-ground link has low transmission delay, high speed and low transmission loss, and the low-orbit satellite is gradually used as a gateway for internet of things communication.

When the internet of things communication is carried out through the earth orbit satellite, the following modes can be adopted: the source end sends 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 the earth station corresponding to the destination end forwards the target information to the destination end through the user data center. This approach requires passing through the earth station, resulting in a longer communication time. Therefore, at present, a point-to-point communication is adopted, that is, a source end sends target information to be sent to a destination end to a satellite, and the target information is forwarded to the destination end by the satellite without passing through a ground station. Therefore, the communication time used by the point-to-point communication is short, and the use degree of the point-to-point communication in users is high.

However, 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 communication pressure of the satellite is large, and further frame loss of part of the target information is caused, resulting in data transmission failure.

Disclosure of Invention

The application provides a data transmission method, a data transmission device, data transmission equipment and a data transmission storage medium, which are used for solving the problems that when a large number of users send target information to a satellite through terminal equipment at the same time, the communication pressure of the satellite is higher, partial target information is lost, and data transmission fails.

In a first aspect, the present application provides a data transmission method applied to a satellite, the method including: 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.

In a second aspect, the present application provides a data transmission method for use in 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.

In a third aspect, the present application provides a data transmission method, which is applied to a satellite control center, where the method includes: 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; when a 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 satellite through the earth station.

In a fourth aspect, the present application provides a data transmission method, which is applied to a terminal device, and the method includes: 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; 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.

In a fifth aspect, the present application provides a data transmission device for use with a satellite, the device 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, if the flag bit of the destination address indicates that the target data includes the destination address, 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 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.

In a sixth aspect, the present application provides a data transmission apparatus for use at 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.

In a seventh aspect, the present application provides a data transmission apparatus, applied to a satellite control center, where the apparatus includes: 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.

In an eighth aspect, the present application provides a data transmission apparatus, which is applied to a terminal device, and the apparatus includes: 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 group corresponding to the terminal equipment is an unauthorized group; the sending module is used for 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.

In a ninth aspect, the present application provides 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 the first aspect.

In a tenth aspect, the present application provides a computer-readable storage medium having stored thereon computer-executable instructions for implementing the method of the first aspect when executed by a processor.

In an eleventh aspect, the present application provides a computer program product comprising a computer program which, when executed by a processor, implements the method of the first aspect.

According to the data transmission method, the data transmission device, the data transmission equipment and the data transmission storage medium, target information to be sent to target terminal equipment by source terminal equipment is received; 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 zone 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, transmitting the target information to the destination terminal equipment. Whether the destination terminal equipment is authorized terminal equipment is determined according to the prestored group identification of the authorization group and the group identification corresponding to the destination terminal equipment; if the destination terminal equipment is authorized terminal equipment and the satellite is located in the communicable range of the destination terminal equipment, the target information is sent to the destination terminal equipment, therefore, when a large number of users send the target information to the satellite through the terminal equipment in a point-to-point mode at the same time, the target information of authorized groups is forwarded, the ID target information of terminal equipment of unauthorized groups is limited, and therefore the number of point-to-point communication at the same time can be limited, the issue queue congestion of the satellite is avoided, the communication pressure of the satellite is reduced, and the frame loss phenomenon of the target information is reduced.

Drawings

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

Fig. 1 is an application scenario diagram provided in an embodiment of the present application;

fig. 2 is a flowchart of a data transmission method according to an embodiment of the present application

Fig. 3 is a second flowchart of a data transmission method according to an embodiment of the present application;

fig. 4 is a third flowchart of a data transmission method according to an embodiment of the present application;

fig. 5 is a fourth flowchart of a data transmission method according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

Interpretation of terms:

an inter-satellite link refers to a communication network constructed by a plurality of satellites in space, and can interconnect the plurality of satellites.

The satellite control center is a hub for directing the satellite to work and is also a ground command part of the satellite. The satellite control center uses a plurality of computers to command and monitor the operation of the satellite, sends various instructions to the satellite, arranges a satellite working program, controls the operation attitude of the satellite, commands the work of the sensor and the transmission of information, controls the work coordination of the satellite-borne instrument and the ground receiving station, and the like.

An earth station, which is part of a satellite communication system and comprises an antenna, uplink equipment, downlink equipment and the like; the azimuth and the pitch angle of the antenna are controlled through a tracking system which is manually or automatically controlled, so that the antenna is aligned with the communication satellite at any time. The uplink equipment is a system for transmitting information by the earth station; the downlink equipment is the system by which the earth station receives information.

With the rapid development of aerospace technology, satellites become one of effective schemes for realizing global communication coverage. Because of its global coverage, it can coordinate the ground networks to work together in the areas where the ground networks are constructed, and the satellite network can also provide services for the areas where the ground networks are not constructed or for the high dynamic terminals (mobile terminals with higher transmission frequency). Meanwhile, the orbit height of the low-orbit satellite is relatively low, so that the satellite-ground link transmission delay is low, the speed is high, and the transmission loss is small, and the low-orbit satellite is gradually used as a gateway of internet of things communication. The satellite communication is described in detail below by way of specific examples:

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

each of the 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.

An earth station 12, which may be communicatively coupled to a satellite; for transmitting remote control information to the satellite when the satellite comes within communicable range of the earth station 12, the remote control information including a packet identification of an illegal packet and a packet identification of an authorized packet. Optionally, the remote control information may further include a packet identifier of the unauthorized packet.

The satellite control center 13 is in communication connection with the earth station 12, and a user can group a plurality of terminal devices according to service types or user groups through the satellite control center 13 to obtain Z groups; and determining X authorized packets of the Z packets; 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, generating first remote control information according to the group identification of the X authorization groups, and transmitting the first remote control information to the satellite.

Optionally, after the user groups a plurality of terminal devices according to the service type or the user group through the satellite control center 13 to obtain Z groups, Y illegal groups in the Z groups may also be determined; wherein Z 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 Z; and when the satellite enters a communicable range of the earth station 12, generating second remote control information based on the group identification of the Y illegal groups, and transmitting the second remote control information to the satellite.

The terminal device 14 may be a sending end, i.e., a source end, or a destination end, i.e., a receiving end. When a terminal device serves as a source terminal (hereinafter referred to as a source terminal device), the source terminal device can transmit information to a satellite when the satellite comes within a communicable range of the source terminal device.

When the terminal device is a destination (hereinafter referred to as a destination terminal device), the satellite periodically transmits broadcast information including operating parameters of the satellite to the outside. When the satellite enters the communicable range of the destination terminal equipment and the destination terminal equipment receives the broadcast information of the satellite, the communicable time length between the satellite and the destination terminal equipment can be calculated according to the operation parameters of the satellite, and the communicable time length is sent to the satellite. The satellite can determine whether the destination terminal equipment is in the communication coverage of the satellite according to the communication-capable time length. In this way, the satellite can determine whether 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 a satellite through terminal equipment in a point-to-point manner at the same time, the communication pressure of the satellite is high, frame loss of part of information is caused, and data transmission failure is further caused. For example, the data to be transmitted, which is sent by the source terminal device to the destination, mainly includes collected service data and communication service data, the collected service data has a lower requirement on timeliness, and the communication service data has a higher requirement on timeliness. The collected service data is generally transmitted periodically, when there are more collected services in a certain area, a large amount of collected service data will be sent to the satellite at the same time, resulting in satellite receiving saturation, and when there are other communication requirements, such as communication service requirements, the satellite 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, 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, which causes the storage pressure of the satellite to be larger.

In view of the above technical problems, the inventors of the present application propose the following technical idea: the satellite groups the terminal equipment which communicates with the satellite and authorizes each group, so that the satellite provides point-to-point communication for the authorized group terminal equipment, and the terminal equipment which limits point-to-point communication at the same moment is reached.

Specifically, the group identifier of the authorization group is stored in advance in the satellite, and according to the group identifier of the authorization group stored in advance in the satellite and the group identifier to be sent to the destination terminal device, whether the destination terminal device is the authorized terminal device is determined, and when the destination terminal device is determined to be the authorized terminal device and the satellite is located in a communicable range of the destination terminal device, the target information is sent to the destination terminal device.

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

Fig. 2 is a first flowchart of a data transmission method according to an embodiment of the present application. As shown in fig. 2, the data transmission method includes:

s201, receiving target information to be sent to a target terminal device by a source terminal device through a satellite.

The target information comprises a grouping identifier 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 grouping identification is used for identifying the identity of 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.

In this embodiment, a source terminal device refers to a terminal device corresponding to a source, that is, a sending end. The destination terminal device is a terminal device corresponding to the destination, i.e. a receiving end. For example, when the terminal device a sends information to the terminal device B, the terminal device a is a source end, and the terminal device B is a destination end, and when the terminal device B sends information to the terminal device a, the terminal device B is a source end, and the terminal device a is a destination end.

The satellite in this embodiment may be any one of the satellites in the inter-satellite link shown in fig. 1.

S202, if the zone bit of the destination terminal address indicates that the target data comprises the destination terminal address, the satellite determines whether the destination terminal device is an authorized terminal device according to the prestored group identification of the authorized group and the group identification corresponding to the destination terminal device.

Optionally, determining whether the destination terminal device is an authorized terminal device according to a pre-stored group identifier of the authorized group and a group identifier corresponding to the destination terminal device, includes: if the pre-stored group identification of the authorization group comprises a group identification corresponding to the destination terminal equipment, determining that the destination terminal equipment is authorized terminal equipment; and if the pre-stored group identification of the authorization group does not comprise the group identification corresponding to the destination terminal equipment, determining that the destination terminal equipment is unauthorized terminal equipment.

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

Before the step S202, the following steps are further included:

step a1, the satellite receives the group identification of each authorization group in X authorization groups.

The user can group the M terminal devices according to the service type or the user group through the satellite control center to obtain a plurality of groups; each group in the plurality of groups corresponds to a group identifier; and transmitting the first remote control information to the satellite through the earth station when the satellite enters a communicable range of the earth station. The first remote control information comprises a group identification of each authorization group in X authorization groups; wherein the packet identification of each of the X authorization packets may be a number of each of the X authorization packets.

Accordingly, the satellite control center and the earth station 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 authorization group in the X authorization groups to the earth station.

a14, the earth station receives the group identification of each authorization group in X authorization groups.

a15, when the satellite enters the communicable range of the earth station, the earth station transmits the group identification of each authorization group in the X authorization groups to the satellite.

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

And a2, storing the group identification of each authorization group in the X authorization groups.

When the satellite receives the first remote control information sent by the earth station, the first remote control information is analyzed to obtain the group identifier of each authorization group in the X authorization groups, and the group identifier of each authorization group in the X authorization groups is stored in the storage unit of the satellite.

Then, when the satellite receives target information to be sent to the destination terminal device by the source terminal device, whether the destination terminal device is authorized can be determined according to the stored packet identifier of each authorization packet in the X authorization packets and the packet identifier of the destination terminal device.

S203, if the destination terminal equipment is authorized terminal equipment, determining whether the satellite is located in the communicable range of the destination terminal equipment.

Specifically, whether the satellite is located within a communicable range of the destination terminal device includes: and determining whether registration information sent by the destination terminal equipment is received, wherein the registration information is used for indicating the communicable time length between the destination terminal equipment and the satellite.

Optionally, the satellite periodically sends broadcast information to the outside, where the broadcast information includes operation parameters of the satellite, such as altitude, eccentric elevation angle, and the like, and after receiving the broadcast information, the destination terminal device determines a communicable time duration between the destination terminal device and the satellite according to the operation parameters of the satellite. And transmits the determined communicable time period with the satellite to the satellite. Then, the satellite can determine whether the current terminal device is located in the communication coverage of the satellite according to the received communicable time length sent by the terminal device.

Optionally, the satellite periodically sends out broadcast information, where the broadcast information includes whether the inter-satellite link is available at the current time, and whether the satellite can communicate with the earth station. The terminal equipment judges the running state of the satellite according to the received broadcast information, wherein the running state comprises whether the link between the satellites is available at the current moment and whether the satellite can communicate with the earth station, and the sending mode of the target information is selected according to the running state of the satellite. For example, the target satellite cannot communicate with the earth station at the present time, and the user can select whether the target information needs to be transmitted through the target satellite through the terminal device.

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

And S204, if the satellite is positioned in the communicable range of the destination terminal equipment, transmitting the target information to the destination terminal equipment.

In an alternative embodiment, if the destination terminal device is an authorized terminal device and the satellite is located within a communicable range of the destination terminal device, the destination information is sent to the destination terminal device in a peer-to-peer communication manner.

In another alternative embodiment, if the destination terminal device is an authorized terminal device and the satellite is located within a communicable range of the destination terminal device, the target information is transmitted 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 firstly sent to the earth station, then is forwarded to the user data center through the earth station, and then is forwarded to the destination terminal equipment by the user data center.

The embodiment receives target information to be sent to a destination terminal device by a source terminal device; 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 or not; 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 zone 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, transmitting the target information to the destination terminal equipment. Whether the destination terminal equipment is authorized terminal equipment is determined according to the prestored group identification of the authorization group and the group identification corresponding to the destination terminal equipment; and if the destination terminal equipment is authorized terminal equipment and the satellite is positioned in the communicable range of the destination terminal equipment, transmitting the target information to the destination terminal equipment. Therefore, when a large number of users send target information to the satellite through the terminal equipment in a point-to-point mode at the same time, the target information of authorized groups is forwarded, and the target information of unauthorized groups is limited. Therefore, the number of point-to-point communication at the same time can be limited, so that congestion of a distribution queue of the satellite is avoided, communication pressure of the satellite is reduced, and frame loss of target information is reduced.

Fig. 3 is a second flowchart of a data transmission method according to an embodiment of the present application. As shown in fig. 3, when data to be transmitted is included in the target information, the data transmission method includes the following steps:

s301, if the satellite is not located in the communicable range of the destination terminal equipment, determining whether the data to be transmitted is target type data.

In this embodiment, the target type data is data that has a high requirement for 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 real-time performance of the target type data, S302 may be adopted to process the target type data.

S302, if the data to be transmitted is target type data, forwarding target information through N satellites located on the same orbit with the satellites; 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 destination satellite, the target information is forwarded through N satellites located on the same orbit as the satellite; and if the target information to be sent to the target terminal equipment comprises the identification of the target satellite, the target information is sent to the target terminal equipment through the target satellite when the target satellite needs to enter a communicable range of the earth station.

And S303, if the target information is not successfully forwarded through the N satellites on the same orbit as the satellite, transmitting the target information to a target earth station positioned in the communication coverage area of the satellite.

The target earth station is used for determining a target satellite according to the target information and forwarding the target information to the target 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 closest satellite to the destination terminal equipment.

For example, N is 3, that is, the same orbit includes 3 satellites, which are respectively marked as a triangle formed by the satellite 1, the satellite 2, and the satellites 3, and if the source terminal device is located in the communication coverage of the satellite 1 and transmits the target type data to be transmitted to the destination terminal device to the satellite 1, and the destination terminal device is not located in the communication coverage of the satellite 1, the satellite 1 may forward the target type data to the satellite 2, and if the satellite 2 determines that the destination terminal device is located in the communication coverage of the satellite 2, the target type data is forwarded to the destination terminal device. If the satellite 2 judges that the destination terminal device is not located in the communication coverage range of the satellite 2, the satellite 2 continuously forwards the target information to the satellite 3, the satellite 3 judges whether the destination terminal device is located in the communication coverage range of the satellite 3, and if the satellite 3 judges that the destination terminal device is located in the communication coverage range of the satellite 3, the target type data is forwarded to the destination terminal device. If the satellite 3 judges that the destination terminal equipment is not located in the communication coverage range of the satellite 3, the satellite 3 forwards the target type data to the satellite 1, the satellite 1 forwards the target type data to an earth station located in the communication coverage range of the satellite 1, the earth station located in the communication coverage range of the satellite 1 calculates a target satellite according to the target type data, namely calculates the satellite closest to the destination terminal equipment, sends the target type data to the target satellite when the earth station is located in the communication coverage range of the target satellite, and sends the target type data to the destination terminal equipment through the target satellite.

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

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

The present embodiment transmits target information to a target earth station located within a communication coverage of a satellite when the target information is not successfully forwarded by N satellites located on the same orbit as the satellite. The target earth station is used for determining a target satellite according to the target information and forwarding the target information to the target terminal equipment through the target satellite when the target earth station is positioned in the communication coverage range of the target satellite; the target satellite is the closest satellite to the destination terminal equipment. The satellite does not need to perform complex path operation, only needs to transmit target information among satellites in the same orbit, and sends the target information to the earth station when the number of times of transmission exceeds the maximum number of satellites in the same orbit, and the earth station calculates the optimal path, so that the satellite calculation pressure is reduced. In addition, the quantity of the target information of communication using the inter-satellite link at the same time can be limited, so that the congestion of the inter-satellite link is avoided, and the frame loss phenomenon of the target information is reduced.

Referring to fig. 3, on the basis of the above embodiment of the method, the data transmission method further includes the following steps:

s304, 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 located in a communicable range of the destination terminal equipment.

In this embodiment, the non-target type data is data that requires less timeliness or data that does not require real-time processing (real-time data).

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

For example, if the value of N is 3, that is, the same orbit includes 3 satellites, which are respectively marked as satellite 1, satellite 2 and satellite 3,3 satellites to form a triangular shape, if the source terminal device is located within the communication coverage of satellite 1 and transmits non-target type data to be transmitted to the destination terminal device to satellite 1, and the destination terminal device is not located within the communication coverage of satellite 1, the non-target type data may be stored in the storage unit of satellite 1, and when the satellite 1 enters the orbit, that is, is located within the communicable range of the destination terminal device, the target information 1 is transmitted to the destination terminal device through the destination terminal device.

S305, if the zone bit of the destination terminal address indicates that the target data does not include the destination terminal address, sending the target information to the earth station corresponding to the source terminal equipment according to the grouping identification of the grouping corresponding to the source terminal equipment.

If the flag bit of the destination address indicates that the target data does not include the destination address, the target data is information sent to the earth station corresponding to the destination terminal equipment.

In this embodiment, it may 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 may be determined according to the identifier of the authorization group.

When meeting emergency and needing to ensure that one group maximizes communication, the terminal devices of other groups can be enabled to silence transmission through the satellite broadcast control command, even if the terminal devices of other groups break a link for transmitting information to the satellite. The specific implementation manner is as the following examples:

fig. 4 is a third flowchart of a data transmission method according to an embodiment of the present application. As shown in fig. 4, the data transmission method includes the following steps:

s401, the satellite receives a control instruction which is sent by the ground station and used for controlling the terminal equipment of the first target group.

The control instruction comprises a group identifier of the first target group, and the control instruction is used for instructing terminal equipment of the first target group to disconnect a link for transmitting 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.

S402, broadcasting a control command by the satellite so that the terminal equipment corresponding to the first target group breaks a link for sending information to the satellite.

For example, when a terminal device currently has an a packet which communicates with a satellite and a B packet, i.e., a first target packet, communicates with the satellite, the remaining bandwidth of the satellite after providing the a packet with bandwidth is not enough to provide the B packet, and the B packet communicates with the satellite to affect the communication between the a packet and the satellite, the communication of the a packet can be secured by disconnecting the B packet from a link for transmitting information to the satellite.

Wherein, the satellite broadcasts the control command periodically. Correspondingly, the terminal equipment of the first target group receives the control instruction sent by the satellite; 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 disconnect a link for transmitting information to the satellite; the bandwidth required by the first target grouping is larger 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 grouping corresponding to the source terminal equipment; and according to the control instruction, disconnecting the link for transmitting the information to the satellite.

On the basis of the above embodiment, the method may further include the following steps: if the control instruction is received in the communication time period of the 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 the 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 the indication information of the emergency communication sent by the third target group and is used for indicating the source terminal equipment which is not the third target group to disconnect the link for sending the information to the satellite; the second targeted packet is an authorized packet and the third targeted packet is an unauthorized packet.

For example, each authorized packet has a corresponding communication time end, the current time period is a communication time period between the authorized packet a and the satellite, and at this time, the terminal device of the unauthorized packet monitors that an emergency such as an earthquake or a fire occurs, the unauthorized packet needs to transmit a large amount of earthquake or fire information, and the remaining bandwidth of the communication between the authorized packet and the satellite cannot meet the bandwidth required by the unauthorized packet, so that the sending function of the terminal device of the authorized packet can be turned off at this time to ensure the emergency communication of the unauthorized packet.

Fig. 5 is a fourth flowchart of a data transmission method according to an embodiment of the present application. As shown in fig. 5, the data transmission method includes the following steps:

step S501, determining whether the source terminal device is a legal terminal device according to the pre-stored illegal packet identifier and the packet identifier corresponding to the source terminal device.

Specifically, if the pre-stored illegal packet identifier includes a packet 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 packet identifier does not include the packet identifier corresponding to the source terminal device, the source terminal device is determined to be a legal terminal device.

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

Step S503, if the source terminal device is a legal terminal device, determining whether the target data includes an address of the destination.

Before step b1, the following steps are also included:

and c1, the satellite receives the group identification of each illegal group in the Y illegal groups.

Specifically, a user can group M terminal devices according to service types or user groups through a satellite control center to obtain a plurality of groups, each group in the plurality of groups corresponds to a group identifier, when the satellite enters a communicable range of an earth station, second remote control information is sent to the satellite through the earth station, and the second remote control information comprises the group identifier of each illegal group in Y illegal groups; wherein the packet identification of each of the Y illegal packets may be a number of each of the Y 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 plurality of groups as an example, if the group is a legal group, each terminal device in the group is a legal terminal device; and if the grouping is an illegal grouping, each terminal device in the grouping is an illegal terminal device.

step c11, the satellite control center groups 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 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.

And 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 identification of each illegal group in the Y illegal groups to the earth station.

Step c15, the earth station receives the grouping identification of each illegal grouping in the Y illegal groupings; y is an integer greater than or equal to 1.

And c16, when the earth station enters the communicable range of the earth station, the earth station transmits the group identifier of each illegal group in the Y illegal groups to the satellite.

And step c2, the satellite stores the grouping identification of each illegal grouping in the Y illegal groupings.

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

Then, when the satellite receives target information to be sent to the destination terminal device by the source terminal device, whether the source terminal device is legal or not can be determined according to the stored packet identifier of each illegal packet in the Y illegal packets and the packet identifier of the source terminal device.

As an alternative embodiment, when the satellite is located within a communicable range of the earth station, the earth station may generate the remote control information including the packet identifier of each of the X authorized packets and the packet identifier of each of the Y illegal packets based on the packet identifier of each of the X authorized packets and the packet identifier of each of the Y illegal packets, and transmit the remote control information to the satellite.

In this embodiment, whether the source terminal device is an illegal terminal device is determined by the packet identifier of the source terminal device, and compared with a scheme in which the identifier of each illegal terminal device is stored by the satellite, and whether the source terminal device is an illegal terminal device is determined according to the stored identifier of each illegal terminal device, the storage pressure of the satellite can be reduced.

On the basis of the above embodiment, the user may further set a communication time period for each of the X authorization packets through the satellite control center, and transmit the communication time period for each of the X authorization packets to the satellite when the satellite enters a communicable range of an earth station corresponding to the satellite control center. Accordingly, when the satellite enters a communicable range of an earth station corresponding to the satellite control center, the communication time period of each of the X authorization packets is transmitted to the satellite through the earth station corresponding to the satellite control center.

Accordingly, the earth station receives a communication time period of each of the X authorization packets, the communication time period being used to indicate a communicable time of the terminal device with the satellite in each packet; and transmits 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.

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

In the embodiment, the communication time periods are set for each authorization group, so that the terminal devices in each authorization group communicate in respective communication time periods, and the number of the terminal devices accessing the satellite can be increased while the number of the terminal devices for point-to-point communication and communication of the inter-satellite link at the same moment is limited, and the utilization rate of satellite communication is increased.

On the basis of the embodiment, the terminal equipment can also acquire 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 of the terminal equipment is used for representing identity information of the terminal equipment; the grouping corresponding to the terminal equipment is an unauthorized grouping; the terminal equipment sends the indication information to the ground station; the ground station is used for determining a third target group corresponding to the terminal equipment according to the identification of the terminal equipment, generating a control instruction according to the third target group corresponding to the terminal equipment 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 equipment which is not in the third target group to disconnect a link for sending information to the satellite.

Accordingly, the satellite control center performs the following steps: receiving indication information of emergency communication; the indication information comprises an identification of the terminal equipment of the emergency communication; determining a third target group corresponding to the terminal equipment of emergency communication according to the identifier of the terminal equipment of emergency communication; generating a control instruction according to the grouping identification of the third target grouping; the control instruction is used for instructing the terminal equipment which is not the third target group to disconnect the link for sending the information to the satellite; and when the satellite enters the communicable range of the earth station corresponding to the satellite control center, the control command is sent to the satellite through the earth station. Accordingly, the earth station transmits the control command to a satellite located within a 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 for emergency communication is authorized terminal equipment, if the current time period is not the communication time period of the terminal equipment for emergency communication, the terminal equipment for emergency communication can send a control instruction to the satellite through the earth station, and the satellite broadcasts the control instruction, so that the terminal equipment of other groups occupying the satellite communication bandwidth can close the sending function.

On the basis of the above embodiment, in order to deal with the situation that an unauthorized terminal device needs to communicate through a satellite in case of emergency, the following embodiments may also be proposed in the present application:

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

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

Further, if the emergency information is not successfully forwarded through the N satellites located on the same orbit as the satellites, the emergency information is sent to a target earth station located within the communication coverage range of the satellites; determining a target satellite by the target earth station according to the emergency information, and forwarding the target information to the target terminal equipment through the target satellite when the target earth station is positioned in the communication coverage range of the target satellite; the target satellite is the closest satellite to the destination terminal equipment.

Based on the above method embodiment, fig. 6 is a schematic structural diagram of a data transmission device provided in the embodiment of the present application. As shown in fig. 6, the data transmission apparatus 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 to a destination terminal device by a source terminal device; 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 or not; 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 602, configured to determine, if the flag bit of the destination address indicates that the target data includes the destination address, 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;

a sending module 603, 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 a communicable range of the destination terminal device.

In some embodiments, the determining module 602 is further configured to determine whether the data to be transmitted is target type data if the destination terminal device is an authorized terminal device and the satellite is not located within a communicable range of the destination terminal device; 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; and 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 target earth station located within a communication coverage area of the satellite if the target information is not successfully forwarded by N satellites located on the same orbit as the satellite; 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.

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 send the target information to the destination terminal device when the satellite is located within a communicable range of the destination terminal device.

In some embodiments, the apparatus further comprises: the receiving module 601 is further configured to receive a control instruction for controlling the terminal device of the first target group, where the control instruction is sent by the ground station; 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; the sending module 603 is further configured to broadcast the control instruction, so that the terminal device corresponding to the first target group disconnects a link for sending information to the satellite.

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

In some embodiments, the apparatus further comprises: a storage module 604; a receiving module 601, further configured to receive a packet identifier of each authorization packet in 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; a storage module 604, configured to store a packet identifier of each authorization packet in the X authorization packets.

In some embodiments, the determining module 602 is further configured to determine whether a source end device is a legal end device according to a pre-stored illegal packet identifier and a packet identifier corresponding to the source end device; 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.

In some embodiments, the receiving module 601 is further configured to receive a packet identifier of each illegal packet in 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; 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 a packet identifier of each illegal packet in the Y illegal packets.

In some embodiments, the sending module 603 is further configured to, if a control instruction is received in a communication time period of a second target group and a remaining bandwidth of the satellite is less than or equal to a preset bandwidth, broadcast the control instruction so that a terminal device corresponding to the second target group disconnects 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 of the non-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.

On the basis of the above method embodiment, fig. 7 is a schematic structural diagram of a data transmission device provided in the embodiment of the present application. As shown in fig. 7, the data transmission apparatus includes: a receiving module 701 and a sending module 702; a receiving module 701, configured to receive a packet identifier of each grant packet in the X grant packets; x is an integer greater than or equal to 1; a transmitting module 702 configured to transmit a packet identifier of each of the X authorization packets to a satellite when the satellite enters a communicable range of the earth station.

In some embodiments, the receiving module 701 is further configured to receive a packet identifier of each illegal packet in the Y illegal packets; y is an integer greater than or equal to 1; the sending module 702 is further configured to send the packet identifier of each illegal packet of the Y illegal packets to the satellite when the satellite enters a communicable range of the earth station.

In some embodiments, the apparatus further comprises: a determination module 703; the receiving module 701 is 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 satellite is the satellite closest to the target terminal equipment of the target information; a sending module 702, configured to send the target information to the target satellite when the target satellite enters a communicable range of the earth station.

In some embodiments, the apparatus further comprises: a generation module 704; the receiving module 701 is further configured to receive indication information of emergency communication; the indication information comprises a group identification of a target group of emergency communication; a generating module 704, configured to generate a control instruction according to the group identifier of the target group; the control instruction is used for instructing source terminal equipment of non-target packets to break a link for sending information to the satellite; a sending module 702, configured to send the control instruction to the satellite when the satellite enters a communicable range of the earth station.

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

On the basis of the above method embodiment, fig. 8 is a schematic structural diagram of a data transmission device according to 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; 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 determining module 802 for determining X grant packets out of the Z packets; x is an integer greater than or equal to 1 and less than or equal to Z; a sending module 803, configured to send, when a satellite enters a communicable range of an earth station corresponding to the satellite control center, a packet identifier of each of the X authorization packets to the satellite through the earth station.

In some embodiments, the determining module 802 is further configured to determine Y illegal packets of the Z packets; 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 send, when a satellite enters a communicable range of an earth station corresponding to the satellite control center, a packet identifier of each illegal packet in the Y illegal packets to the satellite through the earth station.

In some embodiments, the apparatus further comprises: a setting module 804, configured to set a communication time period of each of the X authorization packets, the communication time period being used for representing a communicable time between a terminal device and a satellite in each of the X authorization packets; the sending module 803 is further configured to send, when a satellite enters a communicable range of an earth station corresponding to the satellite control center, the communication time period of each of the X authorization packets to the satellite through the earth station.

In some embodiments, the apparatus further comprises: a receiving module 805, configured to receive indication information of emergency communication; the indication information comprises an identification of the terminal equipment for emergency communication; the determining module 802 is further configured to determine, according to the identifier of the terminal device for emergency communication, a third target group corresponding to the terminal device for emergency communication; a generating module 806, configured to generate a control instruction according to the group identifier of the third target group; the control instruction is used for instructing the terminal equipment of the non-third target group to break a link for transmitting information to the satellite; the sending module 803 is further configured to send the control command to the satellite through the earth station when the satellite enters a communicable range of the earth station corresponding to the satellite control center.

On the basis of the above method embodiment, fig. 9 is a schematic structural diagram of a data transmission device according to an embodiment of the present application. As shown in fig. 9, the data transmission apparatus includes: an obtaining module 901, configured to obtain indication information of emergency communication input by a user through the terminal device; 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; a sending module 902, configured to send 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.

In some embodiments, the apparatus further comprises: the obtaining module 901 is further configured to receive a control instruction sent by a satellite; 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; a disconnection module 903, configured to disconnect a link that sends information to the satellite according to the control instruction.

The data transmission device provided in the embodiment of the present application may be used to implement the technical solution of the data transmission method in the above embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the determining module 602 may be a separately established processing element, or may be integrated into a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and a processing element of the apparatus calls and executes the function of the determining module 602. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 10, the electronic device may include: transceiver 101, processor 102, memory 103.

The processor 102 executes computer-executable instructions stored in the memory, causing the processor 102 to perform the aspects of the embodiments described above. The processor 102 may be a general-purpose processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also a digital signal processor DSP, an application specific integrated circuit ASIC, a field programmable gate array FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components.

Memory 103 is coupled to processor 102 via a system bus and communicates with each other, and memory 103 is used for storing computer program instructions.

The transceiver 101 may be used to obtain the task to be run and the configuration information of the task to be run.

The system bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The transceiver is used to enable communication between the database access device and other computers (e.g., 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 application further provides a chip for executing the instruction, and the chip is used for executing the technical scheme of the data transmission method in the embodiment.

The embodiment of the present application further provides a computer-readable storage medium, where a computer instruction is stored in the computer-readable storage medium, and when the computer instruction runs on a computer, the computer is enabled to execute the technical solution of the data transmission method in the foregoing embodiment.

The embodiment of the present application further provides a computer program product, where the computer program product includes a computer program, which is stored in a computer-readable storage medium, and at least one processor can read the computer program from the computer-readable storage medium, and when the at least one processor executes the computer program, the at least one processor can implement the technical solution of the data transmission method in the foregoing embodiments.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the 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

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;

if the destination terminal equipment is authorized terminal equipment and the satellite is located in a communicable range of the destination terminal equipment, sending the target information to the destination terminal equipment;

after receiving the target information to be sent to the destination terminal device by the source terminal device, the method further includes:

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.

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 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.

6. 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 comprising:

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.

7. 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.

8. The method of claim 7, 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.

9. 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.

10. 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;

the method further comprises the following steps:

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;

the control instructions are sent to the satellite when the satellite comes within communicable range of the earth station.

11. The method of claim 10, 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.

12. The method according to claim 10 or 11, further comprising:

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 within communicable range of the earth station.

13. The method of claim 10 or 11, 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.

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

grouping the 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 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;

when a satellite enters a communicable range of an earth station corresponding to the satellite control center, transmitting a packet identifier of each authorization packet in the X authorization packets to the earth station;

the method further comprises the following steps:

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.

15. The method of claim 14, 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 a 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.

16. The method according to claim 14 or 15, characterized in that the method further comprises:

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.

17. 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.

18. The method of claim 17, 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.

19. 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, if the flag bit of the destination address indicates that the target data includes the destination address, 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;

a sending module, 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 a communicable range of the destination terminal device;

the receiving module is also used for receiving a control instruction which is sent by the 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 the sending module is further configured to broadcast the control instruction so that the terminal device corresponding to the first target group disconnects a link for sending information to the satellite.

20. 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 for transmitting a packet identifier of each of the X authorization packets to a satellite when the satellite enters a communicable range of the earth station;

the device further comprises: a generation module;

the receiving module is further used for receiving indication information of emergency communication; the indication information comprises a group identification of a target group of emergency communication;

the generating module is used for generating a control instruction according to the grouping identifier 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 the sending module is also used for sending the control instruction to the satellite when the satellite enters the communicable range of the earth station.

21. 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;

a sending module, configured to send, when a satellite enters a communicable range of an earth station corresponding to the satellite control center, a packet identifier of each of the X authorization packets to the satellite through the earth station;

the device further comprises: the receiving module is used for receiving indication information of emergency communication; the indication information comprises an identification of the terminal equipment for emergency communication;

the determining module is further used for 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;

the generating module is used for generating a control instruction according to the grouping identifier of the third target grouping; 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 the sending module is also used for sending the control command to the satellite through the earth station when the satellite enters a communicable range of the earth station corresponding to the satellite control center.

22. 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 equipment according to the identification of the terminal equipment, generating a control instruction according to the target group corresponding to the terminal equipment 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 non-target group terminal equipment to disconnect a link for sending information to the satellite.

23. 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 1-18.

24. 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 1-18.