Satellite uplink and downlink data transmission method and system

Abstract

The present invention discloses a satellite uplink and downlink data transmission method and system, the method comprising the steps of: S1, collecting uplink data and mobile data of a mobile device; S2, transmitting the collected uplink data and mobile data to a ground sending station; S3, completing the first verification of the uplink data and mobile data; S4, uploading the uplink data and mobile data to a relay satellite; S5, completing the second verification of the uplink data and mobile data; S6, the relay satellite converts the uplink data into downlink data; S7, transmitting the downlink data and mobile data to a ground receiving station near a mobile terminal device; S8, and completing the verification of the downlink data and mobile data. In the satellite communication system of the present invention, by monitoring and verifying each device port of the mobile device uploading / downloading in real time, it is ensured that the uploaded or downloaded data is updated in real time, and the accuracy of the data and the accuracy of the transmission address position are guaranteed when the data reaches the mobile terminal device.

Description

Technical Field

[0001] The present invention belongs to the technical field of satellite communications, and in particular, relates to a satellite uplink and downlink data transmission method and system. Background Art

[0002] In the research of wireless communication technology, satellite communication is considered to be an important aspect of the future development of wireless communication technology. In cellular communication systems, in order to ensure the reliability of data transmission, the HARQ (Hybrid Automatic Repeat reQuest) feedback mechanism is introduced. That is to say, after the sender sends data to the receiver, the receiver needs to perform HARQ feedback at the predefined or indicated resource location to inform the sender whether the data transmission is received correctly.

[0003] In the Chinese invention patent with patent number CN202080001459.7, a data transmission method based on satellite communication is disclosed. The method is used for a terminal, including: determining a demodulation performance parameter for demodulating data received via a satellite; reporting target indication information determined according to the demodulation performance parameter to the satellite; wherein the target indication information is used to allow the satellite to update the transmission parameters when transmitting data to the terminal; and performing data transmission with the satellite according to the updated target transmission parameters sent by the satellite. The reporting of the target indication information determined according to the demodulation performance parameter to the satellite includes: reporting the target indication information to the satellite in response to satisfying a preset reporting condition. The method also includes: receiving a notification message sent by the satellite; wherein the notification message includes at least a target period for the terminal to periodically report the target indication information; and determining that the preset reporting condition is satisfied in response to reaching the target period.

[0004] The defect of the existing patent is that although the problem of missing feedback mechanism and data transmission delay in the transmission process is solved, when uploading or downloading data to a mobile device, data errors or wrong transmission addresses may still occur due to the real-time changes in the device's location. Summary of the invention

[0005] In view of the problem that when uploading or downloading data to a mobile device in an existing satellite communication system, data errors or wrong transmission addresses may still occur due to the real-time change of the device position when uploading or downloading data, the present invention provides a satellite uplink and downlink data transmission method and system.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0007] A satellite uplink and downlink data transmission method, comprising the steps of:

[0008] S1, collect uplink data and mobile data of the moving device;

[0009] S2, transmitting the collected uplink data and mobile data to the ground sending station;

[0010] S3, the received information is fed back to the mobile device through the ground sending station, completing the first verification of the uplink data and mobile data;

[0011] S4. After completing data verification in step S3, the uplink data and mobile data are uploaded to the relay satellite;

[0012] S5. Complete the second verification of the uplink data and mobile data;

[0013] S6, the relay satellite converts the uplink data into downlink data;

[0014] S7, downlink data and mobile data are transmitted to the ground receiving station nearest to the mobile terminal device;

[0015] S8. The ground receiving station transmits the downlink data and mobile data to the mobile terminal device and completes the verification of the downlink data and mobile data.

[0016] Furthermore, the movement data includes the movement speed of the moving device and the position coordinate data when the uplink data is currently sent, and the uplink data is converted into downlink data through the movement speed and the position coordinate data.

[0017] Furthermore, the detailed steps of the first verification of the uplink data and mobile data in step S3 include:

[0018] S301, the ground sending station feeds back the received uplink data to the moving device;

[0019] S302, determine whether the uplink data to be sent and the data fed back are consistent, if they are consistent, proceed to step S303, if they are inconsistent, terminate the uplink data upload;

[0020] S303, determining whether the mobile data sent and the data fed back are consistent;

[0021] S304: When both steps S302 and S303 are established, proceed to complete the subsequent step S4.

[0022] Furthermore, the detailed steps of the second verification of the uplink data and mobile data in step S5 include:

[0023] S501, the relay satellite feeds back the received uplink data to the mobile device or the ground sending station;

[0024] S502, judging whether the data to be sent as uplink and the data to be fed back are consistent, if they are consistent, proceeding to step S503, if they are inconsistent, terminating the conversion of the data to be sent as uplink;

[0025] S503, determining whether the mobile data sent and the data fed back are consistent;

[0026] S504: When steps S502 and S503 are consistent, proceed to complete the subsequent step S6.

[0027] Furthermore, the detailed steps of step S6 include:

[0028] S601, the moving speed of the moving device is updated to the latest moving speed;

[0029] S602, the position coordinate data is updated to the latest position coordinate data;

[0030] S603: Further determine whether the result of subtracting the initial position coordinate data from the latest position coordinate data and dividing it by the system uplink data time is consistent with the latest moving speed.

[0031] Furthermore, the downlink data and mobile data verification step completed in step S8 is consistent with the first uplink data and mobile data verification step, the difference being that the feedback targets (mobile devices, ground transmitting stations and relay satellites) are different, their feedback times are different, and the verification moving speeds, coordinate positions and system uplink or downlink times are different.

[0032] A satellite uplink and downlink data transmission system, comprising a mobile device, a ground transmitting station, a relay satellite, a ground receiving station, a mobile terminal device, a first uplink data verification module, a second uplink data verification module, a downlink data verification module and an uplink and downlink data conversion module;

[0033] The mobile device is connected to the ground transmission station for collecting data to be uplinked and mobile data;

[0034] The ground sending station is connected to the relay satellite for communication and is used to upload the data to be uplinked and the mobile data to the relay satellite;

[0035] Relay satellite, used for receiving uplink data and mobile data and sending downlink data and mobile data;

[0036] The ground receiving station is connected to the relay satellite for receiving downlink data and mobile data and transmitting them to the mobile terminal device;

[0037] The mobile terminal device is connected to the ground receiving station for communication and is used to receive downlink data and mobile data sent by the ground receiving station;

[0038] The first uplink data verification module is in communication connection with the ground sending station and is used for first verification of the uplink data and mobile data;

[0039] The second uplink data verification module is connected to the relay satellite for second verification of the uplink data and mobile data;

[0040] The downlink data verification module is connected to the mobile terminal device for verifying the downlink data and mobile data for the last time;

[0041] The uplink and downlink data conversion module is connected to the relay satellite communication and is used for converting the uplink data into downlink data.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] In the satellite communication system, real-time verification is performed by monitoring each device port for upload / download of the mobile device to ensure that the uploaded or downloaded data is updated in real time, and the accuracy of the data and the accuracy of the transmission address location are guaranteed when it reaches the mobile terminal device.

[0044] At the same time, when an error occurs in a certain part of the upload or download process, the erroneous data can be discovered and updated in time, the traceability of the channel that generated the erroneous data is improved, and the channel between the two devices where the error occurred can be quickly located. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A flowchart of a satellite uplink and downlink data transmission method according to an embodiment of the present invention;

[0046] Figure 2 is a detailed flow chart of step S3 of an embodiment of the present invention;

[0047] Figure 3 The present invention is a framework diagram of a satellite uplink and downlink data transmission system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0049] like Figure 1 As shown, this embodiment provides a satellite uplink and downlink data transmission method, including the steps of:

[0050] S1, collect uplink data and mobile data of the moving device;

[0051] S2, transmitting the collected uplink data and mobile data to the ground sending station;

[0052] S3, the received information is fed back to the mobile device through the ground sending station, completing the first verification of the uplink data and mobile data;

[0053] S4. After completing data verification in step S3, the uplink data and mobile data are uploaded to the relay satellite;

[0054] S5. Complete the second verification of the uplink data and mobile data;

[0055] S6, the relay satellite converts the uplink data into downlink data;

[0056] S7, downlink data and mobile data are transmitted to the ground receiving station nearest to the mobile terminal device;

[0057] S8. The ground receiving station transmits the downlink data and mobile data to the mobile terminal device and completes the verification of the downlink data and mobile data.

[0058] The movement data includes the movement speed of the moving device and the position coordinate data when the uplink data is currently sent. The uplink data is converted into downlink data through the movement speed and the position coordinate data.

[0059] like Figure 2 As shown, the detailed steps of the first verification of uplink data and mobile data in step S3 include:

[0060] S301, the ground sending station feeds back the received uplink data to the moving device;

[0061] S302, determine whether the uplink data to be sent and the data fed back are consistent, if they are consistent, proceed to step S303, if they are inconsistent, terminate the uplink data upload;

[0062] S303, determine whether the mobile data sent and the data fed back are consistent; the consistency includes whether the mobile speed changes, whether the position coordinate data when the uplink data is currently sent changes, and whether the change pattern is consistent with the mobile speed change pattern. That is, whether the distance generated during the time difference between the uplink data and the feedback data is proportional to the uploaded mobile speed.

[0063] S304: When both steps S302 and S303 are established, proceed to complete the subsequent step S4.

[0064] Step S5: The detailed steps of the second verification of uplink data and mobile data include:

[0065] S501, the relay satellite feeds back the received uplink data to the mobile device or the ground sending station;

[0066] S502, judging whether the data to be sent as uplink and the data to be fed back are consistent, if they are consistent, proceeding to step S503, if they are inconsistent, terminating the conversion of the data to be sent as uplink;

[0067] S503, determine whether the mobile data sent and the feedback data are consistent; this step needs to distinguish the different reference time and reference calculation standards for feedback to the mobile device or the ground sending station, such as the different distances during the time difference between the uplink data and the feedback data, and the transmission channel speed from the mobile device to the ground sending station and the transmission channel speed from the ground sending station to the relay satellite, resulting in different feedback verification time and distance. The verification rules also change accordingly.

[0068] S504: When steps S502 and S503 are consistent, proceed to complete the subsequent step S6.

[0069] The detailed steps of step S6 include:

[0070] S601, the moving speed of the moving device is updated to the latest moving speed;

[0071] S602, the position coordinate data is updated to the latest position coordinate data;

[0072] S603: Further determine whether the result of subtracting the initial position coordinate data from the latest position coordinate data and dividing it by the system uplink data time is consistent with the latest moving speed.

[0073] The downlink data and mobile data verification step completed in step S8 is consistent with the first uplink data and mobile data verification step, wherein the difference is that the feedback targets (mobile equipment, ground transmission station and relay satellite) are different, the feedback time is different, and the verification moving speed, coordinate position and system uplink or downlink time are different. Multiple feedback target data can verify their correctness with each other and determine the target channel where the uplink or downlink data is wrong. The feedback target is optimally selected as the relay satellite, because the front-end channel of the relay satellite is all verified data, which reduces the difficulty and complexity of verification.

[0074] like Figure 3 As shown, a satellite uplink and downlink data transmission system includes a mobile device, a ground sending station, a relay satellite, a ground receiving station, a mobile terminal device, a first uplink data verification module, a second uplink data verification module, a downlink data verification module and an uplink and downlink data conversion module;

[0075] The mobile device is connected to the ground transmission station for collecting data to be uplinked and mobile data;

[0076] The ground sending station is connected to the relay satellite for communication and is used to upload the data to be uplinked and the mobile data to the relay satellite;

[0077] Relay satellite, used for receiving uplink data and mobile data and sending downlink data and mobile data;

[0078] The ground receiving station is connected to the relay satellite for receiving downlink data and mobile data and transmitting them to the mobile terminal device;

[0079] The mobile terminal device is connected to the ground receiving station for communication and is used to receive downlink data and mobile data sent by the ground receiving station;

[0080] The first uplink data verification module is in communication connection with the ground sending station and is used for first verification of the uplink data and mobile data;

[0081] The second uplink data verification module is connected to the relay satellite for second verification of the uplink data and mobile data;

[0082] The downlink data verification module is connected to the mobile terminal device for verifying the downlink data and mobile data for the last time;

[0083] The uplink and downlink data conversion module is connected to the relay satellite communication and is used to convert the uplink data to be converted into downlink data. The process includes the replacement of erroneous data of the uplink data and the replacement of mobile data.

[0084] Compared with the prior art, the present invention has the following beneficial effects:

[0085] In the satellite communication system, real-time verification is performed by monitoring each device port for upload / download of the mobile device to ensure that the uploaded or downloaded data is updated in real time, and the accuracy of the data and the accuracy of the transmission address location are guaranteed when it reaches the mobile terminal device.

[0086] At the same time, when an error occurs in a certain part of the upload or download process, the erroneous data can be discovered and updated in time, the traceability of the channel that generated the erroneous data is improved, and the channel between the two devices where the error occurred can be quickly located.

[0087] The above is a detailed introduction to a satellite uplink and downlink data transmission method and system provided by the present application. The description of the specific embodiment is only used to help understand the method and its core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A satellite uplink and downlink data transmission method, characterized in that: Includes steps: S1, collect uplink data and mobile data of the moving device; S2, transmitting the collected uplink data and mobile data to the ground sending station; S3, the received information is fed back to the mobile device through the ground sending station, completing the first verification of the uplink data and mobile data; S4. After completing data verification in step S3, the uplink data and mobile data are uploaded to the relay satellite; S5. Complete the second verification of the uplink data and mobile data; S6, the relay satellite converts the uplink data into downlink data; S7, downlink data and mobile data are transmitted to the ground receiving station nearest to the mobile terminal device; S8. The ground receiving station transmits the downlink data and mobile data to the mobile terminal device and completes the verification of the downlink data and mobile data.

2. A satellite uplink and downlink data transmission method according to claim 1, characterized in that: The movement data includes the movement speed of the moving device and the position coordinate data when the uplink data is currently sent. The uplink data is converted into downlink data through the movement speed and the position coordinate data.

3. A satellite uplink and downlink data transmission method according to claim 2, characterized in that: The detailed steps of the first verification of uplink data and mobile data in step S3 include: S301, the ground sending station feeds back the received uplink data to the mobile device; S302, determine whether the uplink data to be sent and the data fed back are consistent, if they are consistent, proceed to step S303, if they are inconsistent, terminate the uplink data upload; S303, determining whether the mobile data sent and the data fed back are consistent; S304: When both steps S302 and S303 are established, proceed to complete the subsequent step S4.

4. A satellite uplink and downlink data transmission method according to claim 3, characterized in that: Step S5: The detailed steps of the second verification of uplink data and mobile data include: S501, the relay satellite feeds back the received uplink data to the mobile device or the ground sending station; S502, judging whether the data to be sent as uplink and the data to be fed back are consistent, if they are consistent, proceeding to step S503, if they are inconsistent, terminating the conversion of the data to be sent as uplink; S503, determining whether the mobile data sent and the data fed back are consistent; S504: When steps S502 and S503 are consistent, proceed to complete the subsequent step S6.

5. A satellite uplink and downlink data transmission method according to claim 4, characterized in that: The detailed steps of step S6 include: S601, the moving speed of the moving device is updated to the latest moving speed; S602, the position coordinate data is updated to the latest position coordinate data; S603: Further determine whether the result of subtracting the initial position coordinate data from the latest position coordinate data and dividing it by the system uplink data time is consistent with the latest moving speed.

6. A satellite uplink and downlink data transmission method according to claim 5, characterized in that: The downlink data and mobile data verification step completed in step S8 is consistent with the first uplink data and mobile data verification step, the difference being that the feedback targets are different. The feedback targets include moving devices, ground sending stations and relay satellites, and their feedback times are different, verifying different moving speeds, different coordinate positions and different system uplink or downlink times.

7. A satellite uplink and downlink data transmission system, characterized in that: It includes a mobile device, a ground sending station, a relay satellite, a ground receiving station, a mobile terminal device, a first uplink data verification module, a second uplink data verification module, a downlink data verification module and an uplink and downlink data conversion module; The mobile device is connected to the ground transmission station for collecting data to be uplinked and mobile data; The ground sending station is connected to the relay satellite for communication and is used to upload the data to be uplinked and the mobile data to the relay satellite; Relay satellite, used for receiving uplink data and mobile data and sending downlink data and mobile data; The ground receiving station is connected to the relay satellite for receiving downlink data and mobile data and transmitting them to the mobile terminal device; The mobile terminal device is connected to the ground receiving station for communication and is used to receive downlink data and mobile data sent by the ground receiving station; The first uplink data verification module is in communication connection with the ground sending station and is used for first verification of the uplink data and mobile data; The second uplink data verification module is connected to the relay satellite for second verification of the uplink data and mobile data; The downlink data verification module is connected to the mobile terminal device for verifying the downlink data and mobile data for the last time; The uplink and downlink data conversion module is connected to the relay satellite communication and is used for converting the uplink data into downlink data.

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